KR101119920B1 - A drill holder for grinding the drill - Google Patents

A drill holder for grinding the drill Download PDF

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Publication number
KR101119920B1
KR101119920B1 KR1020100075843A KR20100075843A KR101119920B1 KR 101119920 B1 KR101119920 B1 KR 101119920B1 KR 1020100075843 A KR1020100075843 A KR 1020100075843A KR 20100075843 A KR20100075843 A KR 20100075843A KR 101119920 B1 KR101119920 B1 KR 101119920B1
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KR
South Korea
Prior art keywords
drill
angle
tip
chuck
coupled
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KR1020100075843A
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Korean (ko)
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KR20120013696A (en
Inventor
이규상
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이규상
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Priority to KR1020100075843A priority Critical patent/KR101119920B1/en
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Publication of KR101119920B1 publication Critical patent/KR101119920B1/en

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The present invention relates to a drill fixture capable of adjusting the drill length and tip angle applied to the drill blade grinder.
The present invention provides a drill fixture for drilling the drill tip to the drill chuck fixing part of the drill blade grinding device when grinding the tip end of the drill 12 fixed to the drill chuck 10, so that the outer diameter of the drill chuck 10 slides A through hole 121 is formed, and a coupling portion 122 having a small outer diameter is formed at one side of the axial direction, and a position fixing member 100 to which the tightening bolt 123 is coupled to be fixed to the drill chuck 10 when tightened to the outside. ); The through hole 141 is formed to be coupled to the coupling portion 122, the position fixing pin 20 is protruded along the axial direction on one side of one side, is fixed to the coupling portion 122 when tightened to the outside An angle adjuster 140 to which the tightening bolt 143 is coupled; A through hole 161 is formed to allow the drill chuck 10 to pass therethrough, and a fixing groove 162 is formed to fit the position fixing pin 20 of the angle adjuster 140 on one surface thereof. It characterized in that it comprises a tip angle correction body 160 is coupled to the angle display panel 180 is formed with a cross line 181 matching the tip angle of the drill 12.

Description

Drill fixture with adjustable drill length and tip angle for drill grinders {A DRILL HOLDER FOR GRINDING THE DRILL}

The present invention relates to a drill blade grinder, and more particularly, the drill length and the tip angle position adjustment applied to the drill blade grinder to enable easy and stable positioning of the drill when grinding the drill tip through the drill blade grinder. This relates to a possible drill fixture.

In general, the drill (drill) is used to be fixed to the hand drill or drill machine to drill a hole in the workpiece, such as metal and concrete, such a drill is a tip portion of the drill tip by the high temperature friction heat or chips when used for a long time There is a problem that the wear phenomenon that is broken or crushed is difficult to reuse.

In order to solve this problem, the conventional worker is used to replace or grind the edge of the drill by using a grinder or a grinding machine depending on the wear part of the drill. The tip of the drill tip is a pair of spirals around the center line. Difficult to match the taper angle as the tapered surface is formed and gripped by hand and then rotated to grind the drill. In addition, there is a problem that the risk of injury caused by direct contact with the drill in a high-speed rotating grinder after gripping by hand Will be.

For this purpose, the drill chuck is fixed to a separate jig body, and then the jig body is gripped by hand, and then the machining surface of the drill blade is polished. Therefore, not only can not exclude the risk factor is difficult to adjust the angle.

Many drill blade grinding machines have been proposed by the present applicant to solve this problem.

As an example, Utility Model Registration No. 236962, "Drilling Grinding Machine," filed June 25, 2001, has been presented.

This can be processed by the grinding wheel that is rotated during the switching operation in a state in which the blade tip of the worn drill is fixed to the drill chuck which is automatically fed, thereby preventing injuries during manual grinding and obtaining sophisticated processing effects. In addition, the drill chuck fixing the drill allows the rotation angle and interval of the grinding wheel to be automatically adjusted so that the machining surface of the drill can be polished more simply and precisely.

That is, the base member is fixed to the ground and provided with a motor driving unit for rotating the grinding wheel in accordance with the switching operation, the rotating plate is hinged fixed to the front of the base member on the same horizontal axis line as the rotary shaft of the grinding wheel, and bent, Both ends are hinged at both ends of the rotating plate to rotate back and forth, the angle calibration piece having a fixed tube formed in the upper and lower communication holes in the middle, and the lower end is selectively fixed to surround the fixed tube and has a pinion gear on the outer peripheral surface And a drill chuck inserted into the drill chuck so as to slide up and down by a transfer means, the drill chuck selectively fixing the drill therein and provided on an upper surface of the base member and inclined at a predetermined angle with the pinion gear so that the pinion gear is tilted. It includes a rack gear that guides it as it rotates. Is configured.

However, as the drill is fixed through the drill chuck when the drill is fixed to the above-described drill blade grinder, there is a problem in that it is necessary to rely on the operator's sense when polishing the drill blade.

In addition, the drill forms a tip angle of about 120 ° at the tip for smooth machining in the machining process, while the drill having the tip angle, as described above, is due to friction with the workpiece during its use. The tip angle is worn and the blade formed by the tip angle becomes dull. When the drill tip is worn out and the edge of the tip becomes dull as described above, the tip angle was polished by a grinding machine by manual labor.

However, as described above, the grinding of the drill tip by manual work requires a lot of skill, and the worker is limited, and there is a problem that a lot of time is required for the work and safety accidents occur frequently in the working process.

In addition, Utility Model Registration No. 20-394026, "Drill Grinding Machine for Drill Tip Angle Polishing," has been registered by the present applicant.

It is equipped with a grinder that can be constrained to be always at the same angle with the grinding wheel, regardless of the weight of the drill, and then polish the tip angle of the drill through the rotating grinding wheel. And drills are drilled to make grinding easier and easier, and also equipped with a grinder that allows the drill tip angle to constrain the polished drill horizontally and then to grind the center cutting edge of the drill through the rotating grinding wheel. It is to prevent interference and forced pressing of both ends of the cutting edge of the center, and to provide the convenience of work by providing a grinder to polish the tip angle of the drill and the vertical angle of the drill tip.

That is, a plate having a lower end hinged to one side of a grinder body having a grinding wheel rotated by a motor driving unit, and inclinedly fixed so that the tip of the drill is in contact with the grinding wheel at a tip angle at an upper side of the plate, the predetermined side A rotating member which is hinged to be rotated up and down in position, a rotating member coupled to rotate left and right on the upper surface of the rotating member, and a coupling piece provided opposite to both sides of the drill by a control handle to pressurize and fix the drill. A drill tip angle primary polishing machine comprising a jig and a restraining member provided on the rotating member and moved by an adjustment handle to press and restrain the drill jig; A plate fixed to the other side of the grinder body, a fixing member horizontally fixed to the upper side of the plate, a rotating member coupled to rotate left and right on one side of the upper surface of the fixing member, and provided opposite to both sides of the drill A drill tip angle secondary grinder consisting of a drill jig for coupling the piece to be moved by the adjustment handle to pressurize and fix the drill, and a restraining member 250 provided to the rotating member and moved by the adjustment handle to press and restrain the drill jig. It is composed.

However, there is a problem that it is difficult to fix the drill in place when drilling the drill through the above-described drill blade grinding machine.

As such, when grinding the tip end portion of a general drill, the blade has a spiral direction on both sides based on a center line formed horizontally at a predetermined distance from both the center of the drill tip portion. That is, the drill is polished while the drill is fixed to the drill chuck fixing part of the drill blade grinding device while rotating the grinding wheel of the drill blade grinding device or rotating the drill chuck fixing part. And, as the drill chuck is accurately set to the drill chuck fixing portion of the drill blade polishing apparatus, the drill chuck and the drill chuck fixing portion are usually set by positioning pins and the like.

At this time, there is a problem that the operator has to match the distance between the tip angle of the drill to be processed and the grinding wheel manually, and it is difficult to accurately set the position of the tip angle formed at the tip of the drill.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

SUMMARY OF THE INVENTION

first; When the drill blade is polished, the length of the drill coupled to the drill chuck fixing part of the drill blade polishing apparatus in the state where the drill is fixed to the drill chuck is set so that the length can be easily set through the drill blade fixture.

second; The center line of the tip angle formed on the tip of the drill, that is, the center line formed horizontally for a predetermined distance so as to induce both inclination angles in an oblique direction from the center of the tip of the drill can be easily fixed.

In order to achieve the above object, the present invention, in the drill fixture to ensure that the drill is positioned in the drill chuck fixing part of the drill blade grinding device when grinding the tip end of the drill fixed to the drill chuck,

A through hole is formed so that the outer diameter of the drill chuck is slide-in, a coupling portion having a small outer diameter is formed at one side of the axial direction, and a position fixing member to which the tightening bolt is coupled to the drill chuck when tightened outside; A through hole is formed to slide to the coupling part, and a position fixing pin protrudes along an axial direction on one side of the coupling part, and a tightening bolt fixed to the coupling part when tightened to the outside; A through hole is formed to allow the drill chuck to pass therethrough, and a fixing groove is formed to fit the position fixing pin of the angle adjuster on one surface thereof, and an angle display plate having a cross line corresponding to the tip angle of the drill is coupled to the other surface thereof. Characterized in that it comprises a tip angle corrector.

The angle display panel is fixed to the front of the distal angle corrector with a fastening bolt to be adjustable in length, and four calibration holes are formed in a “+” shape on the circumference of the center of the through hole. Can be applied.

The drill fixture which can adjust the drill length and the tip angle position applied to the drill blade grinding machine according to the present invention,

first; When the drill blade is ground, the length of the drill coupled to the drill chuck fixing part of the drill blade polishing apparatus in the state in which the drill is fixed to the drill chuck can be easily set through the drill blade fixture.

second; The tip angle center line formed at the tip of the drill, that is, the center line formed in a predetermined distance horizontally so that both inclination angles are induced in an oblique direction from the center of the tip of the drill can be easily fixed.

1 is a cross-sectional view of a drill fixture according to the present invention,
Figure 2 is a cross-sectional view of the separated state of FIG.
3 is a left side view of FIG. 1;
Figure 4 is a flow chart of the setting process of the drill fixture according to the present invention,
Figure 4a is a state in which the drill is coupled to the drill chuck,
4b is a state in which the position fixture is coupled to the drill chuck,
4C is a state in which the angle adjuster is coupled to the position fixing body,
4d is a state in which the leading angle correction body is coupled to the angle adjuster,
4E is a state diagram in which the length of the drill is determined by coupling the position fixing body to the drill chuck with a tightening bolt after placing FIG. 4D on the smooth surface.
Figure 4f is a state diagram showing the process of rotating the angle adjuster to match the center line of the tip of the drill and the cross line of the tip angle correction body,
Figure 4g is a state diagram for setting the drill tip angle center line by coupling the angle adjuster to the position fixing body with the tightening bolt after the angle adjustment,
Figure 4h is a state of separating the tip angle corrector from the drill fixture so that it can be set to the drill chuck fixture of the drill polishing apparatus through the position fixing pin.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present invention. do.

The present invention is a drill fixture to ensure that the drill 12 is positioned in the drill chuck fixing part of the drill blade grinding device when grinding the tip end of the drill 12 fixed to the drill chuck 10 as shown in FIGS. 100), the drill fixture 100 is fixed to the drill 12, and is fixed in position through the position pin 20 to the drill chuck fixing part of the drill blade grinding device.

That is, when the position fixing pin 20 provided to the drill fixture 100 is fixed to the drill chuck fixing portion of the drill blade grinding machine, the tip processing of the drill 12 is determined.

The drill blade grinding apparatus, as in the known art, may be composed of a body having a grinding wheel and a jig body coupled to the drill chuck 10 through a positioning pin 20 and rotatably coupled to the body. .

This is to grind the tip angle of the drill 12 while rotating the jig body in the state in which the grinding wheel is rotated, and the drill fixture 100 moves the position fixing pin 20 to the jig body. It will be fixed in place.

The drill fixture 100, the drill chuck 10 for fixing the drill 12 in the core technology of the present invention, the position fixing body 120 coupled to the drill chuck 10, and the position fixing body 120 It is configured to include a tip angle correction body 160 for setting the center line 16 to form a tip angle of the drill 12 of the drill chuck 10, coupled to the rotary selectively rotated.

The position fixing body 120, the through-hole 121 is formed so that the outer diameter of the drill chuck 10 is slide-in, a coupling portion 122 having a small outer diameter is formed on one side in the axial direction, when the outer tightening Tightening bolt 123 is coupled to be fixed to the drill chuck (10).

In the drawings, reference numerals 124 and 125 are grooves formed to support the tip of the tightening bolt when the tightening bolt 123 and the tightening bolt 143 to be described later are combined.

The angle adjuster 140, the through-hole 141 is formed so as to slide coupled to the coupling portion 122, the position fixing pin 20 is provided on one side protrudes along the axial direction, tightened to the outside When the tightening bolt 143 is fixed to the coupling portion 122 is coupled.

The tip angle corrector 160 has a passage hole 161 formed to allow the drill chuck 10 to pass therethrough, and a fixing groove for fitting the position fixing pin 20 of the angle adjuster 140 to one surface thereof. An 162 is formed, and the angle display panel 180 on which the cross line 181 corresponding to the tip angle of the drill 12 is formed is coupled to the other surface.

The angle display panel 180 is fixedly coupled to the fastening bolt 182 so that the length can be adjusted in front of the tip angle corrector 160, and is formed on the circumferential surface of the circumferential center of the through hole 161. Four calibration holes form a “+” shape and are formed through to form a cross line 181.

The cross line 181 is intended to coincide with the center line 16 located at the center of the tip of the drill 12.

Here, the fixing groove and the position fixing pin 20 formed in the drill chuck fixing portion is to be fitted to each other to prevent rotation can also be applied as a coupling structure of the polygonal portion and the polygonal groove.

The assembly and setting process of the drill fixture capable of adjusting the drill length and tip angle applied to the drill blade grinder according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

At the time of assembling,

As shown in FIG. 1 or FIG. 4A, the drill 12 is inserted into the drill chuck 10 and then fixed. At this time, the drill 12 is fixed in a state protruding to some extent from the drill chuck 10. Subsequently, as shown in FIG. 4B, the position fixing member 120 is inserted into the drill chuck 10 by slide insertion, and the angle adjuster 140 is continuously connected to the drill chuck 10 as shown in FIG. 4C. Combine. Then, the angle adjuster 140 is positioned at the coupling part 122 of the position fixing body 120, and continuously combines the tip angle corrector 160 as shown in FIG. 4D. Then, the fixing groove 162 of the tip angle corrector 160 is inserted into the position fixing pin 20 formed in the angle adjuster 140.

In this case, as shown in FIG. 4E, the center of the drill 12 of the drill chuck 10 in the state where the drill chuck 10 coupled to the drill chuck 10 and the drill chuck 10 is gripped on the upper surface of the smooth surface. Make sure the line is tight.

In this state, the tightening bolt 123 located in the position fixing body 120 is rotated so that the tightening bolt 123 is fixed to the drill chuck 10. Thereafter, as shown in FIG. 4F, the angle adjuster 140 is rotated while the drill chuck 10 and the position fixing body 120 are gripped. At this time, the cross line 181 formed on the angle display panel 180 of the tip angle corrector 160 and the center line formed on the tip of the drill 12 are matched, and then the angle adjuster ( Tightening the tightening bolt 143 provided to the 140 so that the angle adjuster 140 is integrally fixed to the position fixing body 120. Then, as shown in FIG. 4h, the tip angle corrector 160 is separated from the drill chuck 10 and the angle adjuster 140. Thereafter, when the position fixing pin 20 protruding from the angle adjuster 140 of the drill fixture 100 is fitted to the fixing groove formed in the drill chuck fixing portion of the drill blade polishing machine, the drill fixture 100 is The setting is completed on the drill grinding machine. Thereafter, the drill 12 may be polished while rotating the drill chuck fixing part forming the drill blade polishing device.

10: drill chuck
12: drill
20: Position pin
100: drill fixture
120: position fixing
121: through hole 122: coupling portion
123: tightening bolt
140: angle adjuster
141: through hole 143: tightening bolt
160: tip angle corrector
161: through hole 162: fixing groove
180: angle display plate
181: Cross line 182: Tightening bolt

Claims (2)

In the drill fixture to ensure that the drill is positioned in the drill chuck fixing part of the drill blade grinding device when grinding the tip end of the drill 12 fixed to the drill chuck 10,
A through hole 121 is formed to slide the outer diameter of the drill chuck 10, and a coupling portion 122 having a small outer diameter is formed at one side in an axial direction, and the tightening bolt is fixed to the drill chuck 10 when tightened to the outside. Position fixing body 100 is coupled to 123;
The through hole 141 is formed to be coupled to the coupling portion 122, the position fixing pin 20 is protruded along the axial direction on one side of one side, is fixed to the coupling portion 122 when tightened to the outside An angle adjuster 140 to which the tightening bolt 143 is coupled;
A through hole 161 is formed to allow the drill chuck 10 to pass therethrough, and a fixing groove 162 is formed to fit the position fixing pin 20 of the angle adjuster 140 on one surface thereof. Drill length and tip angle applied to a drill blade grinder, characterized in that it comprises a tip angle corrector 160 to which the angle display panel 180 on which the cross line 181 is formed to match the tip angle of the drill 12. Adjustable drill fixture. The method according to claim 1,
The angle display panel 180,
Four calibration holes on the circumferential surface centering on the center of the through hole 161 coaxial with the through hole 161 is fixed and coupled to the front of the tip angle corrector 160 to adjust the length A drill fixture capable of adjusting a drill length and a tip angle position, which is applied to a drill blade grinder, characterized in that the "+" shape is formed through.
KR1020100075843A 2010-08-06 2010-08-06 A drill holder for grinding the drill KR101119920B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100075843A KR101119920B1 (en) 2010-08-06 2010-08-06 A drill holder for grinding the drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100075843A KR101119920B1 (en) 2010-08-06 2010-08-06 A drill holder for grinding the drill

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KR20120013696A KR20120013696A (en) 2012-02-15
KR101119920B1 true KR101119920B1 (en) 2012-03-06

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103537917A (en) * 2013-10-22 2014-01-29 昆山邦琪盛电子材料有限公司 Chuck with clamp ring
CN103551869A (en) * 2013-10-22 2014-02-05 昆山邦琪盛电子材料有限公司 Anti-abrasion chuck
CN103537919A (en) * 2013-10-24 2014-01-29 昆山邦琪盛电子材料有限公司 Novel chuck
CN112091681A (en) * 2020-11-19 2020-12-18 山东工商学院 Multifunctional clamp for numerical control machine tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4468891A (en) 1981-07-29 1984-09-04 Itm International Tool Machines Inc. Machine for point grinding drills
JPS63114856A (en) 1986-10-31 1988-05-19 Yasuyoshi Tsuchiya Grinding guide mechanism for drill grinding device
JP2010012590A (en) 2008-07-01 2010-01-21 Nishigaki Kogyo Kk Drill chuck and drill polishing machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4468891A (en) 1981-07-29 1984-09-04 Itm International Tool Machines Inc. Machine for point grinding drills
JPS63114856A (en) 1986-10-31 1988-05-19 Yasuyoshi Tsuchiya Grinding guide mechanism for drill grinding device
JP2010012590A (en) 2008-07-01 2010-01-21 Nishigaki Kogyo Kk Drill chuck and drill polishing machine

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