JPH01109061A - Drill polishing device - Google Patents

Abstract

PURPOSE:To set cutter face of a drill accurately on a drillbearing table by arranging a drill bearing mechanism on a polish regulating means such that it will make a predetermined angle with respect to a grinding wheel, then arranging a regulatable angular positioning member and a drill rear section positioning member on the drill bearing mechanism. CONSTITUTION:A polish regulating means B is planted from the end face of a sliding table A arranged slidably back and forth on a grinding wheel table 1. The polish regulating mechanism B is arranged rollably in advancing and retreating direction of the sliding table A. A drill bearing mechanism C is fixed rollably in horizontal direction such that it will make a predetermined inclination angle with respect to the grinding wheel 1 on the polish regulating mechanism B at a higher position than the axis of the grinding wheel 2. A drill bearing table 24, a chuck member 27, an angular positioning member 31 for setting the rotary angle of a drill D at a predetermined position and a drill rear section positioning member 25 for setting the rear position of the drill D are provided to the drill bearing mechanism C. Edge of the drill D born in predetermined posture by the bearing mechanism C is polished symmetrically by means of the grinding wheel 2.

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention is applicable to a drill polishing device, which is particularly capable of being miniaturized, extremely easy to operate, and capable of accurately polishing the cutting edge of a drill with a symmetrical alignment. The present invention relates to drill polishing equipment that can be used and has fewer failures.

``Prior Art'' Conventional drill grinding devices of this type range from manual types to automated types, and each type is used. As is well known, manual methods have the drawbacks of requiring time and skill, while automated methods have drawbacks such as complicated machine operation and the inability to perform grinding work with the required precision. .

Therefore, the following technical documents can be found here and there regarding these improvements.

For example, the drill cutting edge grinding of Special Publication No. 5B-52784
There is an I device, the gist of which is that a guide body with an inclined guide surface such as a square bevel on the outer and inner surfaces is erected at a suitable location on the upper surface of a head that can be directly attached to a machine tool, and the motor is moved up and down on the guide body. It is movable and has a centripetal tool and a cutting edge stopper placed on the upper surface of the head, allowing the drill to be attached to the spindle of a machine tool. A unique feature is that you can polish the cutting edge while looking at it.

There is also a drill grinding M device of Special Publication No. 59-26426.
The gist is that the grinding wheel is installed in parallel with the rotating shaft of the grinding wheel,
And +11! A swinging arm is fixed to one end of a swing shaft having a 7X hand wheel at the end, and a drill holder and a swing shaft are attached to the swing shaft in the longitudinal direction. This patented device consists of a vertical feed knob that moves the drill bit, and the tip and flank of the drill can be polished by operating the hand holder and the vertical feed knob.

Furthermore, there is a method and a grinding device for grinding the tip rake face of a ball end mill, disclosed in Japanese Patent Publication No. 61-47656, which includes a table that can reciprocate in a linear direction, and a table that is attached to the table so that the grinding direction of the tip rake face is centered on the axis. A tip grinding device having a rotatable output shaft that supports a ball end mill having a constant inclination angle with respect to The output shaft of the grinding device is supported such that the axis of the ball end mill has a predetermined angle of inclination with respect to the movement direction of the table, and the helical grinding device is configured to rotate the output shaft in accordance with the movement of the table. The rake face of the ball end mill is ground by mechanical means.

There is another method and device for polishing the cutting tool edge disclosed in Japanese Patent Publication No. 61-13943, the gist of which is that the sharpening wheel is rotated in a fixed position. With the flank of the curved cutting edge formed in contact with each other, the cutting tool is rotated around its own axis and rotated around the center of curvature of the curved cutting edge. It is configured to polish while polishing. Or special public service Sho 61-545
There is a No. 42 drill polishing holder V device, and its gist is that a horizontal table and a vertical table that can be moved left and right or back and forth are provided on a fixed table, and a movable table that can freely swing in the horizontal direction is provided on this vertical table. A housing for holding a drill is vertically swingable on this movable table via a support.

"Problems to be Solved by the Invention" Each of the above technical documents attempts to simplify the conventional automated drill grinding device and make it easier to handle, and the results are fully visible to IM. However, there is still plenty of room for improvement in each invention.

In other words, in Special Publication No. 5B-52784, a drill was manufactured*
Although it has the advantage of being able to polish while attached to I4,
If the cutting edge stopper simply comes into contact with the side of the drill blade, fine adjustment of the drill cutting edge position, or if the setting of the cutting edge position at the end of one grinding process is canceled, the If
Since it is not possible to confirm B, when polishing a hydraulic cutting edge, it is difficult to check the polished dimensions and angle formed in the so-called previous polishing, in which one of the cutting edges of the drill was polished. It was impossible to do so, and it was almost impossible to form a symmetrical cutting edge.

In addition, in Special Publication No. 59-2G426, the swing operation is performed by a handwheel via a swing arm equipped with a drill holder and a swing shaft, and the forward and backward operations are performed via this vertical feed noah. Since the drill is not operated directly by hand, it is not possible to accurately feed the drill in units of accuracy or swing the drill accurately, and it is impossible to expect an improvement in the degree of grinding Nm. When polishing the other cutting edge, the positioning of the drill and the tip of the cutting edge cannot be done accurately.

Furthermore, in Japanese Patent Publication No. 61-47656, the ball end mill is moved by a predetermined distance for each rotation of the ball end mill (so-called every time the tip rake face is polished), so it is certainly theoretically possible to It is possible to mechanically polish the rake face. However, the operation of this apparatus requires skill and sufficient attention, and there is ample room for improvement in terms of simplifying and facilitating the polishing operation.

In view of the above, the present invention has a configuration in which the polishing position of one cutting edge of the drill can be set via mechanical means, and it is possible to form a symmetrical F$l+ relationship of the cutting edge of the drill. In addition, the present invention provides a drill polishing device that can be operated with extremely simple movements. H
! jI A sliding table fixedly provided on the grinding wheel head via a freely provided set screw, and a sliding table erected from the end face of this sliding table, so that the bracket sliding table can swing in the forward and backward directions. This sliding table can fix the cutting edge of the drill at a predetermined position, and the grinding mechanism consists of a fixed standing arm and a movable standing arm that move forward and backward at the same time, and this grinding adjustment mechanism a drill holding mechanism which is pivotally mounted to be able to swing freely, overlaps the sliding table, and is arranged at a predetermined inclination angle with respect to the grindstone; A drill carrying stand provided on a drill time plate located below, a chucking member located perpendicular to the drill time plate, and a cutting surface of the drill tip swing against the drill time plate in contact with the drill support base. An angle positioning member that can freely set the rotation angle of the cutting edge of the drill to a predetermined position, and a rear part of the drill that is fixed with a set screw provided via an auxiliary member to the drill time plate that sets the rear position of the drill. and a positioning member, and when the drill set in the drill support mechanism is in a horizontal state, the pivot position of the drill support mechanism is located above the horizontal line of the axis of the grindstone, and the drill This configuration is characterized in that the flank surface of the cutting edge is ground at the outer periphery above the horizontal line of the axis of the grindstone.

"Function" Next, to explain the present invention in detail, first, the slide table A is moved backward, and the polishing adjustment machine IB and the drill support mechanism C, which move forward and backward together with the slide table A, are positioned at the backward limit. The drill DjtR is mounted on the base, and the cutting edge of the drill D is made to protrude several degrees from the drill support base 24, and in this state, one cutting edge surface E of the cutting edge of the drill D (the cutting edge surface E on the opposite side to the cutting edge to be polished) is The angle positioning member 31 is brought into contact with the angular positioning member 31, and the set screw 32 is screwed in here.
When set, the cutting edge of drill D is set at a predetermined position. Therefore, this time, when the rear end side of the drill D is set via the drill 1 & part positioning member 25, the drill support stand 24
Drill D is set at a predetermined position above. Therefore, in order to fix this set II, the chucking member 27
When the set screw 28 is screwed in, this child jacking member 27
Since the tip claw part of the drill presses the drill DttFF, the drill D is securely fixed between the drill support stand 24 and the chucking member 27, and at the same time, one of the symmetrical cutting edges of the drill D presses the angle Ifa determining member. 31 is set on the opposite side of the claw piece 30. Further, the cutting edge thereof is configured to be located on the horizontal line of the axis of the grindstone 2 when the drill holding mechanism C is held in a horizontal state.

Once the drill D is set on the drill support stand 24 as described above, the movable arm 12 is held in the retracted state, for example, by holding the drill rear positioning member 25 that constitutes the drill support mechanism C; Drill carrying mechanism C1t
Move the sliding table A forward toward the grinding wheel head 1,
The slide table Alt is made to hit the stopper 11 provided on the grindstone l, and the set screw 7 is screwed in here to fix the slide table A and this drill carrier tIC in a predetermined position. In this state, when the drill D fixed to the drill support stand 24 is positioned at a predetermined inclination angle with respect to the grindstone 2, the adjustment set screw 15 is screwed in as described above, and the movable arm 12 is retracted. Therefore, one cutting edge of the drill D is in contact with the grindstone 2. Therefore, when the drill rear positioning member 26 constituting the F-rill holding mechanism C is lightly grasped by hand and one of the cutting edges of the drill D is brought into contact with the grindstone 2 while swinging in the vertical direction, one of the cutting edges of the drill D is First, as shown in Fig. 6 (a), the axis is in contact with the outer peripheral part on the horizontal line of the grinding wheel 2, and as mentioned above, the pivot part of the drill support mechanism C is located above the drill D, so it is the same. Figure, (b)
The cutting edge of the drill D comes into contact with the upper outer periphery of the grindstone 2 as shown in FIG. This allows you to sharpen one of the cutting edges. This forms what is called a relief surface for one cutting edge, and one cutting edge is brought into contact with the outer periphery of the grinding wheel 2 with an arcuate trajectory centered on the pivot of the drill carrier + IC, and the grinding is required. The flank surface of one cutting edge is formed.

In this way, while sequentially polishing, the adjustment set screw 1
5 in sequence with, for example, your left hand, move the movable standing upper arm 12 forward toward the grinding stone 2, and adjust so that one cutting edge of the drill D always lightly contacts the grinding stone 2. At the same time, for example, with your right hand, unscrew the drill D. Repeat this operation to sharpen the stone by swinging it up and down, until a certain dimension of one cutting edge of drill D has been polished, and then repeat the same operation as described above several times in principle. By doing this, one of the cutting edges of drill D is polished one after another.In this way, when the polishing is finished, the screwed-in edge of the drill D is polished one by one. 11! Make sure that the I-type regular screw 15 still has a predetermined screw-in dimension (hereinafter, this state will be referred to as a polished dimension), so that the so-called movable upper arm 12 is in a retracted position.

In order to ensure this polishing dimension, the polishing l? adjustment t
Screw in the other adjusting set screw 16 constituting LLB, and screw it in more than the polished dimension of the adjusting set screw 15 to further move the movable arm 12, which has receded slightly, further backward. The polishing dimension of the adjusting set screw 16 is maintained by this.

In this way, Ken 1? ll! ! Movable upper arm 12 of mechanism B
is in the retreat position, screw back the positive screw 7 of the slide table A, and remove the slide table A, the polishing adjustment mechanism B, and the drill holding mechanism C.
and move it backwards to position it at the rearward limit. Here, when the chucking member 27 constituting the drill holding mechanism C is opened,
Drill D can rotate freely, so Drill D is approximately 1
80" rotation, and then the claw piece 30 of the angular positioning member 31 is brought into contact with the polished cutting surface E' of one of the cutting edges, and the other cutting edge of the drill D is rotated through the claw piece 30 of the angle positioning member 31. Set the cutting edge E' of
Make sure to set it to 4 in the same way as above.

The process is the same as the polishing order of the drill D on one side described above. First, the slide table A, the polishing adjustment mechanism B, and the drill support mechanism C are brought to their forward limits, and then the set screw 7
The sliding table A1, the drill holding mechanism C, etc. are fixed at the forward limit via the slider. Then, sharpen the other cutting edge of drill D.
To fF, as mentioned above, swing the drill D in the vertical direction with the drill rear positioning part 25,
Moreover, the other cutting edge of the drill D is brought into contact with the grindstone 2 with a predetermined arcuate trajectory. In this case, the dimension to be polished of the other cutting edge of the drill D is defined by the polishing dimension of the adjustment set screw 15, so unscrew the adjustment set screw 16 with your left hand and move the movable upper arm 12 as described above. Then move the drill D forward toward the grindstone 2, adjusting the other cutting edge of the drill D so that it always lightly contacts the grindstone 2, and at the same time, for example, swing the drill D vertically with your right hand to sharpen it. By repeating these operations, a certain dimension of the other cutting edge of the drill D is polished, and by repeating the same operation as described above several times in principle, the other cutting edge of the drill D is sequentially polished. In this way, as the polishing progresses, the other Xa upper set screw 16 is screwed back, and when the polishing dimension matches the one adjustment set screw 15, the one blade edge and the Since the polished dimensions of the other cutting edge are the same, if you finish the grinding at this point, the other cutting edge and cutting surface E will be in symmetrical relationship with the already sharpened one cutting edge and cutting surface E. ° will be formed.

Through the above-described operations, polishing of all the cutting edges of the drill D is completed, and a symmetrical cutting edge is formed here.

In addition, set screw 1 for adjusting the above chucking, polishing operations, etc.
It goes without saying that the operating methods 5 and 16 are just examples and are not limited to these examples.

``Example'' An example of the present invention will be specifically described below based on the drawings.

Reference numeral 1 denotes a grinding wheel stand on which an electric grinding wheel 2 is provided, and a guide rod 4 is supported via a bearing 3 on the upper surface of this grinding wheel stand l, for example. In addition, a pair of bearings 5 are provided on the upper surface of the grindstone head 1 in parallel with the guide rod 4, and a guide rod 6 is supported on the pair of bearings 5.

Reference numeral A denotes a sliding table that is guided by the guide rod 4.6 and moves forward and backward toward the grinding wheel head 1 (up and down in FIG. 1), and this sliding table A is supported by the guide rod 4. The sliding table main body 1O has one end connected to the bearing member 8 and the other end supported by the guide rod 6. The slide table A configured in this manner is guided by the guide rod 4.6, and is moved forward and backward along the guide rod 4.6 while being horizontal to the grindstone head 1. The retraction limit is determined by one bearing 3 (the bearing on the left in the direction of 's1) provided at the tip of the guide rod 4, and the surface advancement limit is determined by the stopper l provided on the grindstone head 1. It is regulated by stopping. Therefore, the cutting edge of the drill D is polished at the forward limit, and there is no need to replace the drill D, position the drill D, or position the cutting edge of the drill D at the backward limit.

The purpose is to make these operations safe and reliable.

B is a sharpening iF adjustment mechanism that stands up from the end face of the slide table A (the end face on the opposite side to the drive side of the grinding wheel 2 provided on the grindstone l), and the movable upright upper arm 12 that constitutes this grinding M adjustment mechanism B is By swinging, a drill holding mechanism C, which will be described later, moves forward and backward toward the grinding wheel head l, and the drill holding mechanism C, which will be described later, advances and retreats toward the grinding wheel head l.
Drill D on 4 moves forward and backward toward the grindstone 2. This adjusts the polishing dimensions of the cutting edge and flank of the drill D. In addition, the polishing dimensions of one cutting edge and relief surface are mechanically ensured (note), and this polishing dimension is used when polishing the other cutting edge to ensure a perfectly symmetrical cutting edge. The configuration includes a fixed standing arm 13 fixed to the sliding table main body lO of the sliding table A, and a fixed standing arm 13 that is pivotally attached to the base end of the fixed standing arm 13 via a pivot 14. a movable standing arm 12 that faces the fixed standing arm 13 that swings around the movable standing arm vi12 as a fulcrum, and two setscrews 15 for w4!1 that are screwed onto the movable standing arm vi12 and whose free ends reach the fixed standing arm 13. , 16, and a pull-back member 18 equipped with a spring that reacts with the front drive adjusting set screws 15 and 16 at the proximal end of the fixed standing arm 13 and the movable standing arm [12] which governs the return of the movable standing arm 12. It is made up of.Therefore,
When this drill carrying mechanism C is basically at the backward limit, by screwing in either one of the adjustment setscrews 16 or 16, the movable standing arm 12 is moved from the fixed standing arm 13 to 11.
The movable upper arm 12 (which is integrated with the drill support 24 via the connecting arm 22) can be set to a retreating amount. Therefore,
When the front 2D drill carrying mechanism C is located at the forward limit,
1] tip of the drill D mounted on the drill support stand 24 is formed in a state in which it slightly contacts the grindstone 2, and one t
Through the forward movement of the movable arm 12 by screwing back the A adjustment set screw 15 and the vertical swinging movement of the drill D, one cutting edge of the drill D is set to R? 1. The polishing continues, and when the polishing is completed, a predetermined polishing dimension is formed on the one adjusting set screw 15. In addition, the other adjustment set screw 16 ensures the polished dimension of the one adjustment set screw 15;
During sharpening 2 of the other cutting edge, the movable arm 12, which has already retreated due to the screwing of the other adjusting set screw 16, is sequentially moved forward through the unscrewing of the other adjusting set screw 16. ,
It always makes light contact with the grindstone 2. Then, by unscrewing the adjustment set screw 16, when the screwed-in dimension matches the polished dimension of the one adjustment set screw 15, fIIJj! of the other adjustment set screw 16! and finishes polishing Drill D.

By polishing while maintaining the screw-in dimension in this way, the polishing dimension of the other cutting edge can be made to match the polishing dimension of one of the cutting edges that has already been polished, and the objective of the present invention is to achieve the polishing dimension. A symmetrical cutting edge is formed. Note that the method of operating the adjustment set screws 15 and 16 is merely an example, and it goes without saying that the method is not limited to this example.

C is a drill holding mechanism, and this drill holding mechanism tiC is installed obliquely so as to maintain a predetermined inclination angle with respect to the polishing ia+a mechanism B. Specifically, in order to secure the inclination angle of the cutting edge, a grindstone is The drill D is configured to move toward and away from the grindstone 2 on the stand 1 at a predetermined angle of inclination, and the drill holding mechanism C is connected to the movable upright M12 of the polishing adjustment mechanism B.
The grinding mti
It is swingably attached to the a* mechanism B. The structure of this drill carrying mechanism C has a support arm 21 fixed to the pivot shaft 20, and a long groove 22a attached to a protrusion 211 of the support arm 21 so as to be movable up and down. A drill support 24 having a V-shaped cut groove 24a on which the drill D fixed at the predetermined angle of inclination is placed on the connection arm 22, and the back of the drill support 24. Drill rear positioning member 25 provided at the end
and a chucking member 2 having a regular screw 28 for chucking the drill D mounted on the drill carrier 24.
7, and an angular positioning member 3 which is installed obliquely to the drill support base 24 and has a claw piece 30 at its tip that comes into contact with the cutting surfaces E and E' of the cutting edge of the drill D. The angle positioning member 31 is attached to the drill support 24 with a pivot 32a.
14 with this pivot 32a as a fulcrum.
The drill D swings vertically as shown by the arrow in the figure, and as described above, the drill D
The purpose is to contact the cutting surfaces E and E9 of the cutting edge of the drill D, secure the rotation angle of the drill D, and polish the two-edged light to a symmetrical relationship.

The angle positioning member 31 is swung as described above by screwing in and unscrewing the set screw 32 and compressing and releasing the spring 33, and when setting one of the cutting edges, the cutting edge surface E
The rotation angle of the drill D is fixed by contact with the drill D. In addition, when polishing the other cutting edge with this angle positioning member 31 fixed, the rotation angle of the drill D is set in the same manner as the grinding time of one of the cutting edges described above by touching the cutting edge i[E'. It is possible. Also, since the drill support base 24 is formed with a cut groove 24a, the ILI of this cut 124a is
I Due to the three-point support between the slope and the chucking member 27,
The drill D can be reliably chucked, and in principle, the drill D can be set reliably regardless of its diameter. Furthermore, the drill rear positioning member 25 can effectively deal with the lengthwise length of the drill D. The drill support stand 24 is vertically movable via the connection H22. Ml! Fixation is achieved by a set screw 221) screwed into the connecting arm 22.

In the figure, 35 is a set screw that fixes the drill rear positioning member 25, and 37 is a stopper that locks the drill holding mechanism C.

Although the structure of one example of the present invention has been described in detail above, the structure is not limited to this mechanism, and any structure that has the same effect as this mechanism is included in the embodiments of the present invention.

Effects of the Invention Since the present invention has the configuration described in detail above, it is possible to accurately polish the cutting edge and flank surface of the drill, and at that time, the shape and angle of the cutting edge can be polished to a symmetrical relationship. IUI can greatly improve drilling speed and drilling accuracy.

Furthermore, the grinding dimension of the drill cutting edge can be accurately determined through the grinding adjustment mechanism, and both cutting edges can be reliably ground with equal dimensions and angles.

Furthermore, since the drill holding mechanism is provided with an adjustable angle positioning member, it is possible to accurately set the cutting edge of the drill on the drill holder, that is, to accurately set the position of the drill in the circumferential direction on the drill holder. This can be expected to improve the polishing accuracy of the cutting edge surface.

Furthermore, the present invention has a simplified overall structure and is easy to handle, so it can be easily used by any person, and it has practical advantages such as sharpening and polishing work quickly and at low cost. It also has an effect.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a partially cutaway plan view, and FIG. 2 is a front perspective view showing the relationship among the sliding table, polishing adjustment mechanism, and drill holding mechanism. , Fig. 3 is a partially cut-out copper surface view, Fig. 4 is an enlarged side view showing the relationship between the drill carrier, the child king member, and the angle positioning member, and Fig. 5 is a front view of Fig. 14. 6A and 6B are explanatory diagrams showing the grinding states of the drills (A) to (C). l: Grindstone head 3: Bearings 4, 6: Guide rods 7, 28, 32, 35: Set screw 8: Bearing member 10: Jlt moving table main body part 11.37: Stopper 12: Movable standing arm 13: Fixed standing arm 14 ．．
20, 32a: Pivot shafts 15, 16: Adjustment set screw 18: Pull-back member 21: Support arm 21a: Projection rod 22: Connecting arm 22a: Long groove 24: Drill support stand 24a: Cut groove 25: Drill rear positioning portion : Claw piece 31: Angle positioning member A: Sliding table B: Polishing adjustment mechanism C: Drill holding mechanism D= Drill Patent applicant Takeshi Kondo Agent Patent attorney Takenaka -Yi 2' Shin (In Y Procedural amendment ( Shoplifting 1. Indication of the incident 1988 Patent Application No. 265762 2 Name of the invention Drill polishing device 3 Relationship to the person making the amendment Patent applicant address 1-28 Hiromi, Chiryu City, Aichi Prefecture. Name
Takeshi Kondo 4,
Agent Address: 185-3 Ubakoyama, Narumi-cho, Midori-ku, Nakota City
Bahilion Higashigaoka A-401-26, Subject of amendment (1) Drawings (Figures 18!1 to 6) 7. Contents of amendment (1) Drawings originally attached to Book II (Figures 1 to 6) figure)
As shown in the engraving and attached sheet (no changes to the content).

Claims (5)

[Claims] (1) A grinding wheel head equipped with a whetstone, a sliding stand provided on the whetstone head so as to be slidable in the front-rear direction, and a sliding stand erected from the end face of this sliding stand, and This slide table, which is swingable in the forward and backward directions, can fix the cutting edge of the drill in a predetermined position.A polishing adjustment mechanism that moves forward and backward at the same time, and is pivoted to the polishing adjustment mechanism so that it can swing freely in the horizontal direction. a drill holding mechanism arranged to overlap with the sliding table and at a predetermined inclination angle with respect to the grindstone; a drill holding stand provided on the drill holding mechanism, a chucking member, and a drill. and a drill rear positioning member that sets the rear position of the drill. A drill polishing device characterized in that the drill polishing device is configured to be located above a horizontal line of the axis of the grindstone. (2) The polishing adjustment mechanism is configured to be able to swing through two adjustment set screws, and the degree of contact of the drill with the grindstone can be adjusted by screwing in and unscrewing one of the adjustment set screws. Adjust and set the amount to be polished, maintain the threading dimension of one adjustment set screw with the other adjustment set screw, and then screw in and unscrew the other adjustment set screw. to adjust the contact of the drill to the grindstone to set the amount to be polished, and unscrew the other adjusting set screw until the threading dimension matches the screwing dimension of the one adjusting set screw. A drill polishing device according to claim 1. (3) The drill polishing device according to claim 1 or 2, wherein the drill holding mechanism is provided in the polishing adjustment mechanism so as to be movable up and down. (4) The sliding table is slidably provided via a guide rod provided on the grinding wheel head, and the forward and backward limits are regulated via a bearing provided on the guide rod and a stopper on the grinding wheel head. A drill polishing device according to claim 1, 2 or 3. (5) The drill polishing device according to claim 1, 2, 3, or 4, wherein a V-shaped cut groove is provided on the drill support base constituting the drill support mechanism. .