U.S. patent application number 11/405413 was filed with the patent office on 2006-09-14 for dual-head grinding drill machine and grinding method.
Invention is credited to Ming-Ko Liao.
Application Number | 20060205328 11/405413 |
Document ID | / |
Family ID | 36971651 |
Filed Date | 2006-09-14 |
United States Patent
Application |
20060205328 |
Kind Code |
A1 |
Liao; Ming-Ko |
September 14, 2006 |
Dual-head grinding drill machine and grinding method
Abstract
A dual-head grinding drill machine and a grinding method that
include two grinding bases on both ends of a motive power source
and each having a grinding wheel. A fixing device separately aligns
a left or a right drill or a mill, such that the knives into blade
directions can perform a grinding operation on the same grinding
machine. A pneumatic motor is installed to match with a sucking
passage for discharging drill bits from the positions of two
grinding wheels, so as to achieve an extensive applicability and an
environmental protection effect. The multi-axis deflective and bias
design of the grinding base provides a diversified grinding design
for grinding a blade stationary point for different requirements
and a blade belly with a different curvature.
Inventors: |
Liao; Ming-Ko; (Ta-Li City,
TW) |
Correspondence
Address: |
ROSENBERG, KLEIN & LEE
3458 ELLICOTT CENTER DRIVE-SUITE 101
ELLICOTT CITY
MD
21043
US
|
Family ID: |
36971651 |
Appl. No.: |
11/405413 |
Filed: |
April 18, 2006 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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11078346 |
Mar 14, 2005 |
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11405413 |
Apr 18, 2006 |
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Current U.S.
Class: |
451/48 |
Current CPC
Class: |
B24B 3/24 20130101; B24B
27/0076 20130101; B24B 3/02 20130101; B24B 3/54 20130101 |
Class at
Publication: |
451/048 |
International
Class: |
B24B 1/00 20060101
B24B001/00 |
Claims
1. A dual-head grinding drill machine and a grinding method,
comprising: a motive power source, installed on a base; two
grinding wheels, installed at both ends of a motive power axle that
are extended from both ends of said motive power source; a hood,
pivotally coupled to both sides of said base; at least one group of
a first grinding base and a second grinding base disposed on both
ends of said grinding base and corresponding to said grinding
wheel; a clamping tool, for clamping a ground object and
corresponding to the operations of said first grinding base and
said second grinding base; and at least one fixing device installed
at a front distal surface of said base.
2. The dual-head grinding drill machine and grinding method of
claim 1, wherein said first grinding base includes a base member, a
sliding groove disposed at the bottom of said base member, a pivot
portion formed on another end of the bottom of said base member for
passing and fixing a pivot onto said base, such that said base
member uses said pivot as the center of a deflection, and a
perpendicular wall of said base member is pivotally coupled to a
bias rotary base, and a perpendicular surface of said rotary base
includes a fixing pillar latched with said clamping tool, and said
rotary base includes a limit portion disposed on a perpendicular
wall of said base member, and said base member includes a
corresponding limit pillar.
3. The dual-head grinding drill machine and grinding method of
claim 1, wherein said rotary base of said base member of said first
grinding base has a bias center and a bias axle in the form of a
multi-axial mode with said bias rotary base pivotally coupled to a
perpendicular wall of said base member, such that the perpendicular
wall of said base member includes a rotary base installing portion,
and said rotary base includes a tool installing portion disposed at
a position of said clamping tool, and a point of said ground object
axle center at the center of said clamping tool in contact with the
surface of said grinding wheel is a cutting center C, and said
cutting center C is projected onto a projected point of a
horizontal axial point C' on a perpendicular surface of said base
member, and the center of said tool installing portion shifts from
said horizontal axial point C' downward to said bias axial point A,
such that when said base member rotates on said rotary base to
drive said clamping tool and said ground object, the tip of said
ground object axle center is fixed motionless at said cutting
center C, and the tip and peripheral surface of said ground object
go around said horizontal axial point C' along said bias axial
point A for approximately 90 degrees to a grinding shift position
for producing a cutting and a grinding effects, and said rotary
base installing portion of said base member includes a horizontal
offset axial point A' in the form of a slanting hole, such that
said first shifting axle CA' of said base member of said rotary
base aligns at a shifting angle from -10 to 10 degrees with respect
to a reference axis CC', and said second shifting axle CA of said
tool installing portion of said rotary base aligns at a shifting
angle from 0 to -5 degrees with respect to said reference axis CC',
such that when said rotary base rotates on said base member in a
grinding process, said clamping tool and said ground object shift
by using said reference axis CC' as a center according to a
predetermined offset of said first shifting axle CA' and said
second shifting axle CA predetermined offset, so that the periphery
at the tip of said ground object form different curvature and
cambered surface by two different shifting axles moving at the same
time.
4. The dual-head grinding drill machine and grinding method of
claims 1 or 3, wherein said ground object includes a stationary
point at the tip of the center of said ground object, and said
stationary point forms two straight blade edges according to the
required quantity of said blade edges, and a curved blade belly
extended from said blade edge towards a left or a right rotary
knife forms a bevel with a slanting angle disposed at an end of
said blade belly, and a bits removing tank is disposed behind said
bevel, and said bevel forms a slanting stationary point slot
disposed at a position of said bevel being extended to said
stationary point, and said first grinding base grinds said blade
edge and said blade belly, and said second grinding base grinds
said bevel and said stationary point slot, such that when two
shifting axles are used for grinding, a curve BA of said first bell
cut by said second shifting axle CA is compared with a curve A'B'
of said second belly ground by said two shifting axles, and thus
the process of rotating said ground object becomes fasters in a
non-proportional way and maintains motionless at said ground object
stationary point and said cutting center C, and only the portion of
said blade belly is cut, and if said first shifting axle CA' shifts
within an angle from 0 to 10 degrees with respect to said reference
axis CC', then said blade belly is driven to move quickly towards
the surface of said grinding wheel for a deeper grinding to form a
larger slanting curvature of said blade belly, such that when said
ground object mills the surface of said work piece, the hardness of
said blade will be lower to cope with the process of grinding a
softer work piece.
5. The dual-head grinding drill machine and grinding method of
claim 4, wherein if said first shifting axle CA' is aligned at a
negative angle with said reference axis CC', the grinding of said
blade belly is reduced and the slope and curvature of said blade
belly becomes flat, and the strength of said blade becomes stronger
when said ground object and said work piece is drilled to fit the
process of grinding the surface of a harder work piece.
6. The dual-head grinding drill machine and grinding method of
claim 1, wherein said pivot portion at the bottom of said base
member is provided for passing said pivot through and fixed to a
pivoting point according to a deviated angle at a deviating axial
point A' for a deviated displacement and deviating said pivot to
said pivoting point, and said rotary base installing portion of
said base member is maintained perpendicular to a vertical portion
of said base member.
7. The dual-head grinding drill machine and grinding method of
claim 1, further comprising a deviating member disposed between
said base member and said rotary base or between said rotary base
and said clamping tool.
8. The dual-head grinding drill machine and grinding method of
claim 7, wherein said deviating member is installed between said
clamping tool and said rotary base, and said deviating member
includes a receiving portion for placing said clamping tool, and a
sheathing portion having a flange of a larger diameter at one end
and another end with a smaller diameter, and the hole position of
said sheathing portion and the center of said rotary base are
concentric, and said receiving portion is installed as a slanting
hole according to the slope difference at a shifting axle point A'
to change the position of a center for passing another ground
object.
9. The dual-head grinding drill machine and grinding method of
claim 8, wherein said receiving portion of said deviating member
can be installed at the bias position of said sheathing portion
according to the lengths of said blades for performing a grinding
process for the blades with different lengths on both sides.
10. The dual-head grinding drill machine and grinding method of
claim 1, wherein said second grinding base is fixed onto said base
member of said base, and an end of said base member is pivotally
coupled to said base by a pivot, and another end of said base
member includes a corresponding fixing bolt and a central axle of a
cam control button passes through said base, and said fixing bolt
is secured onto said base member, and a central axle of said
control button controls a propping member.
11. The dual-head grinding drill machine and grinding method of
claim 10, wherein said central axle of said control button is a cam
structure to cope with the control of a propping member.
12. The dual-head grinding drill machine and grinding method of
claim 10, wherein said base corresponding to said second grinding
base includes a support member disposed perpendicular to the bottom
of said base.
13. The dual-head grinding drill machine and grinding method of
claim 1, wherein said clamping tool includes a clamping member and
a compressing member screwed onto said clamping member, and said
clamping member includes an elastic cylindrical structure therein,
and the exterior of said clamping member is screwed with said
compressing member, and a plug-unplug structure is provided such
that when said compressing member is screwed onto said clamping
member, a clamping action is produced for clamping said ground
member in said ground object.
14. The dual-head grinding drill machine and grinding method of
claim 13, wherein said clamping member includes a sheathing portion
with a small diameter formed at an end and corresponding to said
first and second grinding bases, and an end of said sheathing
portion with a large diameter forms a limit portion.
15. The dual-head grinding drill machine and grinding method of
claim 14, wherein said limit portion comes with a quantity
according to the quantity of blades of said ground object such as a
drill.
16. The dual-head grinding drill machine and grinding method of
claim 1, wherein said fixing device comprises a flat base member, a
receiving portion disposed at an end of said base member, and a
limit pillar disposed at an external edge of said receiving
portion, and said base member comprises a cylindrical seat disposed
at another end of said base member for receiving a resilient
member, a fixing base disposed proximate to the top of said seat,
and a limit portion disposed at the bottom of said fixing base and
corresponding to said seat, and a fixing member being passed
through the center of an axle and secured into the bottom of a
hollow interior of said seat, and a fixing portion formed at a cut
position corresponding to the periphery of said fixing base and the
tip of said ground object.
17. The dual-head grinding drill machine and grinding method of
claim 16, wherein said fixing portion of said fixing base forms a
plurality of surfaces with different slopes to cope with the
structure.
18. The dual-head grinding drill machine and grinding method of
claim 1, wherein said space at the bottom of said base has a larger
area for installing an object containing rack in the form of an
object containing member having a large drawer.
19. The dual-head grinding drill machine and grinding method of
claim 1, wherein said motive power source is a motor, and said
motor is a wind power motor having an end as an air incoming end
and the other end as an air outgoing end.
20. The dual-head grinding drill machine and grinding method of
claim 19, wherein said base includes a sucking passage extended
from said wind power motor and an opening of said sucking passage
is disposed separately at said two grinding wheels.
21. The dual-head grinding drill machine and grinding method of
claim 1, wherein said rear grinding surface of said grinding wheel
constitutes an inwardly tilted acute angle and substantially
maintain an angle from 0 degree to 5 degrees with a horizontal
line.
Description
CROSS-REFERENCES TO RELATED APPLICATIONS
[0001] The present invention is a continuation-in-part application
of the co-pending U.S. application Ser. No. 11/078,346, filed on
Mar. 14, 2005.
FIELD OF THE INVENTION
[0002] The present invention relates to a dual-head grinding drill
machine and a grinding method, and more particularly to a grinding
machine having two heads for simultaneously grinding a left blade
and a right blade of a drill or other knife, and a grinding base
having a multi-axis deflection to meet different requirements.
BACKGROUND OF THE INVENTION
[0003] U.S. Pat. No. 6,517,411 discloses a design of a grinding
machine having two grinding wheels, but such machine is a large
machine which is not portable, and the two grinding wheels are
driven by different motive power sources, and thus causing
inconvenience for their use and wasting energy. Further, a small
change of the grinding angle is allowed by adjusting the length of
the grinding wheel, but the grinding cannot carry out the grinding
process by the left and right rotating blades, and the grind
process relies on an operator's personal skill, or else an error
will result easily. Thus, the grinding machines of this sort
require further improvements.
[0004] U.S. patent Ser. No. 10/883,856 filed by the inventor of the
present invention discloses a structure of a portable grinding
drill machine having a grinding wheel driven by a motive power
source, but such grinding drill machine still has limited functions
for the grinding by a single blade only and cannot meet the
requirements of the full utility of the grinding machine.
SUMMARY OF THE INVENTION
[0005] In view of the shortcomings of the prior art, the inventor
of the invention developed a dual-head grinding drill machine and a
grinding method in accordance with the invention, wherein the
grinding machine is a portable structure that comes with a design
applicable for the blades of left and right knives and provides a
more effective way to collect and recycle drill bits and a higher
power efficiency, so that the grinding process can meet the
practical requirements.
[0006] The primary objective of the present invention is to provide
a dual-head grinding drill machine and a grinding method that
comprise two grinding wheels disposed on both sides of a motive
power source, and each grinding wheel includes a first grinding
base with a multiple-axis deflection grounding edge and a grinding
acute-angled stationary point, and a seconding grinding base with a
stationary point of variable depths, so that the whole grinding
machine can perform a manufacturing process by a left rotary or
right rotary bladed drill or knife and the motive power source
could be a pneumatic power having a design of a sucking passage to
facilitate a compulsory elimination of drill bits for the grinding
wheel, so as to achieve the environmental protection requirements.
With the design of the first grinding base with a multiple-axis
deflection and the second grinding base with an adjustable
position, the invention can be used to fit different requirements
and extensively used in different areas.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] The present invention will now be described in more detail
hereinafter with reference to the accompanying drawings that show
various embodiments of the invention, in which:
[0008] FIG. 1 is a perspective view of the present invention;
[0009] FIG. 2 is a schematic view of opening a hood according to
the present invention;
[0010] FIG. 3 is an exploded view of a whole system of the present
invention;
[0011] FIG. 4 is an enlarged view of a second grinding base of the
present invention;
[0012] FIG. 5 is an enlarged view of a fixing device of the present
invention;
[0013] FIG. 6 is a schematic view of the design of a single-head
grinding base of the present invention;
[0014] FIG. 7-1 shows a front plane view of the ground object which
is located corresponding to the axial points of the shifting
axle;
[0015] FIG. 7-2 shows a top plane view of the ground object which
is located corresponding to the axial points of the shifting
axle;
[0016] FIG. 7-3 shows a side plane view of the ground object which
is located corresponding to the axial points of the shifting
axle;
[0017] FIG. 8-1 shows the front view of the ground object;
[0018] FIG. 8-2 shows the top view of the ground object;
[0019] FIG. 9 shows the ground object of FIG. 8-1;
[0020] FIG. 10 is a top view to show that the pivoting point of the
base member shifts;
[0021] FIG. 11 shows the deviating member and the bias rotary
member, and
[0022] FIG. 12 shows a top view of the combination of the the
deviating member and the bias rotary member.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0023] To make it easier for our examiner to understand the
structure, innovative features and other objectives of the present
invention, the invention will now be described in more detail
hereinafter with reference to the accompanying drawings that show
various embodiments of the invention. However, the drawings are
provided for illustrating the preferred embodiments and not
intended for limiting the scope of the invention.
[0024] Referring to FIGS. 1 to 3, the invention comprises a base
100, a motive power source 10 disposed on the base 100, and both
ends of the motive power source 10 are extended to both ends of the
motive power axle 11 and passed and fixed to a support member 12 on
the base 100, two grinding wheels 13, a heat dissipating vane 14
disposed at an external side of the grinding wheel 13 for providing
a heat dissipation while performing the grinding operation, and a
hood 15 pivotally coupled to both sides of the base 100 for
covering the grinding wheels 13.
[0025] The hood 15 includes a first grinding base 20 and a second
grinding base 30 disposed at the front side and the top side of the
hood 15, and a clamping tool 40 for clamping a ground object 99 to
cope with the operations of the first grinding base 20 and the
second grinding base 30. The front distal surface of the base 100
includes a plurality of fixing devices 50 for fixing the ground
object 99 clamped by the clamping tool 40 and maintaining the best
position to be fixed with the clamping tool 40, so that the overall
operation can meet the grinding drill or other knife requirements
for the blade edges of the ground object 99.
[0026] The first grinding base 20 includes a base member 21, a
curved sliding groove 210 disposed at the bottom of the base member
21 for securing a fixing bolt onto the base 100, a pivot portion
211 formed at the bottom of the base member 21 for passing and
fixing a pivot onto the base 100 and allowing the base member 21 to
use the pivot as a deflection center.
[0027] The base member 21 includes a bias rotary base 22 pivotally
coupled to a perpendicular wall of the base member 21 and two
fixing pillars 220 disposed on a perpendicular surface of the
rotary base 22 for latching the clamping tool 40, such that the
clamping tool 40 and the rotary base 22 can be rotated as a whole,
and the rotary base 22 includes a flat and straight limit portion
221 corresponding to the perpendicular wall of the base member 21,
and two limit pillars 212 disposed on the base member 21, so as to
limit the rotary base 22 and the clamping tool 40 as well as the
angle of deflection when the ground object 99 is ground at the
first grinding base 20.
[0028] The second grinding base 30 includes a base member 31 fixed
onto the support member 12 as shown in FIG. 4, and an end of the
base member 31 is pivotally coupled to the support member 12 by a
pivot 32, and another end of the base member 31 includes a fixing
bolt 33 and a central axle of a cam control button 34 that passes
through the support member 12, wherein the fixing bolt 33 is
screwed onto the base member 31, and the central axle of the
control button 34 controls a cam type propping member 35 for
propping the bottom of the base member 31, such that the base
member 31 can change its inclination to achieve the different
cutting requirements.
[0029] The clamping tool 40 includes a clamping member 41 and a
compressing member 42 screwed onto the clamping member 41, and the
clamping member 41 includes an elastic cylindrical clamp structure
therein, and the exterior of the clamping member 41 is screwed with
the compressing member 42 and includes a plug-unplug structure such
that when the compressing member 42 is secured onto the clamping
member 41, a clamping action is produced onto the ground object 99
in the clamping member 41, and an end of the clamping member 41
forms a sheathing portion 410 with a smaller diameter to collocate
with the first and second grinding bases 20, 30, and an end of the
sheathing portion 410 with a larger diameter forms a flat and
straight limit portion 411 for limiting the position of each
grinding base 20, 30 and the limit pillar on the fixing device. The
quantity of the limit portions 411 is set according to the quantity
of blades of the ground object 99 such as a drill.
[0030] Referring to FIG. 5, the fixing device 50 includes a
transversally laid L-shape base member 51, a receiving portion 510
in the form of a through hole disposed at the front end of the base
member 51, and a limit pillar 511 disposed at an external edge of
the receiving portion 510 for latching and fixing the limit portion
411 on the clamping member 41, and a horizontal position at another
end of the base member 51 includes a cylindrical seat 52, and the
seat 52 includes a hollow for installing a resilient member 53 in
the form of a loop spring and a fixing base 54 disposed at the top
of the seat 52, and the bottom of the fixing base 54 includes a
sunken limit portion 540 corresponding to the seat 52, and the
middle of the fixing base 54 includes a screw-type fixing member 55
with its central axle portion passing and fixing into the bottom of
the hollow of the seat 52 by a thread end of the central axle of
the fixing member 55, such that the fixing member 55 can compress
and fix the fixing base 54 to the top of the seat 52, and the
periphery of the fixing base 54 and the blade at the tip of the
ground object 99 correspond to the fixing portion 541. In this
preferred embodiment, there are four surfaces with different
inclinations, and thus the invention has a total of two fixing
devices 50, each having a fixing base 54 with four fixing portions
541 of different inclination, so that the structure of the
invention fits the blades of more than eight different kinds of
ground objects 99.
[0031] Further, the space at the bottom of the base 100 includes a
large drawer-type object containing member 60, and the object
containing member 60 includes a rack 61 therein for placing the
clamping tools that clamp different ground objects 99.
[0032] The motive power source 10 of the invention could be a
general electric motor, or a wind power motor as shown in FIG. 3,
and an end of the wind power motor is an air incoming end 101 and
the other end is an air outgoing end 102, and a sucking passage 103
is extended from the wind power motor on the base 100, and an
opening of the sucking passage 103 is disposed at two grinding
wheels 13, such that when the motive power source 10 is turned on,
the sucking passage 103 forms a negative pressure to suck the drill
bits remained after a grinding process by the grinding wheel 13
through the sucking passage 103, and the air outgoing end 102 of
the motive power source 10 discharges the drill bits into a
collector, so that the waste bits will not leak into the air.
Therefore, the invention can meet the environmental protection
requirements.
[0033] The rotary base 22 installed at the base member 21 of the
first grinding base 20 corresponds to the structure as shown in
FIG. 7, and the bias center and deflection of the bias rotary base
22 pivotally coupled to a perpendicular wall of the base member 21
form a multi-axial deflection mode. The perpendicular wall of the
base member 21 includes a rotary base installing portion 213 in the
form of a hole, and the rotary base 22 includes a tool installing
portion 222 in the form of a hole disposed at the position of the
clamping tool 40, and the axle center of the ground object at the
center of the clamping tool 40 in contact with the surface of the
grinding wheel 13 is a cutting center C, and the projected point of
the cutting center C projected onto a perpendicular surface of the
base member 21 is a horizontal axial point C', and the center of
the tool installing portion 222 is shifted by the horizontal axial
point C' downward to form a bias axial point A. If the base member
21 is rotated on the rotary base 22 to drive the clamping tool 40
and the ground object 99, the tip of the axle center of the ground
object 99 will be fixed motionlessly at the cutting center C, and
the tip and peripheral surface of the ground object 99 will go
around the horizontal axial point C' along the bias axial point A
for approximately 90 degrees to a grinding deviation B to produce
cutting and grinding effects. In the present invention, the rotary
base installing portion 213 of the base member 21 further includes
a horizontal offset axial point A' which is in the form of a
slanting hole for aligning the first shifting axle CA' of the base
member 21 of the rotary base 22 at a shifting angle from -10 to 10
degrees with respect to the reference axis CC', and aligning the
second shifting axle CA of tool installing portion 222 of the
rotary base 22 at 0 to -5 degrees with respect to the reference
axis, such that the rotary base 22 rotates on the base member 21 in
a grinding process, the clamping tool 40 and the ground object 99
shift the first shifting axle CA' and the second shifting axle CA
by using the reference axis CC' as the center, and thus the
periphery and the tip of the ground object 99 form different
curvatures and cambered surfaces by two different shifting axles
moving at the same time.
[0034] Referring to FIG. 8, a stationary point 990 is disposed at
the center of the tip of the ground object 99 that forms two
straight blade edge 991 depending on the required quantity of blade
edges, and the blade edge 991 is extended towards a curved blade
belly 992 along the direction of the left or right rotary knife,
and the end of the blade belly 992 forms a steep-angled bevel 993,
and a bits removing tank 994 is disposed behind a bevel 993, and a
slanting stationary point slot 995 is formed at the bevel 993
extended to the stationary point 990, wherein the first grinding
base 20 is provided for grinding the blade edge 991 and the blade
belly 992, and the second grinding base 30 is provided for grinding
the bevel 993 and the stationary point slot 995. If two shifting
axles are used for grinding according to the invention, the two
shifting axles are compared with curve BA of the first belly of the
second shifting axle CA only. The second belly curve A'B' ground by
the two shifting axles will be quicker and maintain motionless at
the stationary point 990 of the ground object 99 and the cutting
center C in a non-proportional manner, and only the blade belly 992
portion is cut. In the preferred embodiment as shown in the
figures, the first shifting axle CA' and the shift of the reference
axis CC' shift about 0 to 10 degrees. In other words, when the
first shifting axle CA' shifts, the blade belly 992 leans towards
the surface of the grinding wheel 13 quickly to form a larger
slanting curvature of the blade belly 992, and the support of the
blade edge 991 is decreased, and the strength of the blade edge 991
is decreased. If the surface of a softer work piece is milled and
the angle of the first shifting axle CA' with respect to the
reference axis CC' is negative, then the grinding quantity of the
blade belly 992 will be decreased and the slanting curvature
becomes flat, and the support of the blade edge 991 becomes larger,
and thus the ground object 99 and the work piece can stand larger
milling force, which is suitable for grinding the surface of a
harder work piece.
[0035] In the invention, the rotary base installing portion 213 on
the base member 21 further comprises a horizontal offset axial
point A' which is in the form of a slanting hole, so that the first
shifting axle CA' of the rotary base 22 on the base member 21 is
the same as the first preferred embodiment of the present
invention. In FIG. 10, the pivot portion 211 at the bottom of the
base member 21 is provided for passing and fixing a pivot into the
pivoting point 211A of the base 100 according to the foregoing
shifting angle at the shifting axle point A' for a compensatory
displacement that is shifted to the pivoting point 211B, 211C, and
the rotary base installing portion 213 on the base member 21
maintains perpendicular to the perpendicular portion of the base
member 21 and not in the form of a slanting hole, so as to achieve
the aforementioned effect of enhancing the cutting function. With
the same design, another deviating member 23 is installed between
the base member 21 and the rotary base 22 or between the rotary
base 22 and the clamping tool 40 to achieve the same effect. Taking
the clamping tool 40 installed at the deviating member 23 and the
rotary base 22 for example, the clamping tool 40 is installed into
the deviating member 23 and placed into the receiving portion 230,
and the exterior forms a sheathing portion 231 having a flange with
a large diameter at an end and a small diameter at the other end,
wherein the hole position of the sheathing portion 231 is
concentric with the center of the rotary base 22, and the receiving
portion 230 can be designed as a slanting hole according to the
differences of a slope and a position at the shifting axle point
A', so as to change the position of the center for passing through
the ground object 99 and achieve the multi-axis grinding effect.
The receiving portion 230 can be installed at the bias center
position of the sheathing portion 231 according to the length of
the blade belly 992 as shown in FIG. 12 for grinding the ground
object 99 that has blade edges 991 with different lengths on both
sides.
[0036] Another characteristic of the present invention resides on
that a back grinding side 130 of the grinding wheel 13 is in the
form of an inwardly slanting acute angle substantially maintaining
an angle from 0 degree to 5 degrees with a parallel line on the
backside of the grinding wheel 13, so that when the ground object
99 carries out a cutting process on the second grinding base 30, a
stationary point slot 995 formed on a slide of the blade edge 991
proximate to the stationary point 990 is not perpendicular to the
blade edge 991 and has an inwardly slanting angle from 0 degree to
5 degrees from the vertical direction, so as to reduce or eliminate
any obstruction to the drill bits eliminating function.
[0037] In the present invention, both ends of the motive power
source 10 correspond to the first and second grinding bases 20, 30,
and also correspond to another group of first and second grinding
bases 20, 30 as shown in FIG. 6, so that both heads of the grinding
machine have four grounds of different grinding bases 20, 30 each
to cope with different grinding requirements.
[0038] In summation of the above description, the present invention
herein enhances the performance than the conventional structure and
further complies with the patent application requirements
* * * * *