KR100956279B1 - A device for grinding the drill - Google Patents

Abstract

The present invention relates to a drill grinding apparatus for reusing a drill blade tip worn by use, comprising: first and second holders (3) (4) to which the front and rear ends of the drill (2) are fitted; A shaft tube 5 to which the first holder 3 is fastened, a tube body 6 installed inside the shaft tube 5, and a second holder 4 fastened therein, and a second holder installed inside the tube body 6. 4) a gripping means (7) for gripping, a fixing means (8) for fixing the tubular body (6) coupled to the shaft tube (5), and a shaft tube (5) rotated 360 degrees on both sides of the shaft tube (5) A shaft bearing (9) (10) for supporting the shaft so as to be able to be axially supported, a rotation inhibiting means (11) for suppressing rotation of the shaft pipe (5), and a pedestal (12) to which the shaft bearings (9) and (10) are fixed. And an angle adjusting means 13 for adjusting the pedestal 12 to be inclined at a predetermined angle, and a conveying means for transferring the pedestal 12 to the front, rear and left and right.

According to the present invention, since the worn drill is ground with a grinding wheel in the state of being fixed to the grinding apparatus, injury and grinding defects due to manual grinding are prevented, and even an unskilled person or a beginner can more easily and accurately grind under the same conditions.

Drill, Grinding, Holder, Shaft, Tube, Wear, Blade, Tung Ji, Shaft Bearing, Pedestal, Angle

Description

Drill Grinding Device {A DEVICE FOR GRINDING THE DRILL}

The present invention relates to a drill grinding device for reusing a drill blade worn by use reusable, and in particular, to correct the blade tip angle and blade clearance angle and the chisel edge angle of the drill, the blade length is the same It is possible to achieve accurate web thinning, which eliminates the need for centering during drilling, prolonging service life and doubling cutting forces over new drills.

In general, a drill is used for a certain time, so that the cutting edge of the tip is worn out and the cutting efficiency is greatly reduced. Therefore, the drill is polished and reused. The cutting edge has a predetermined point of the blade angle (Point Angle), the blade clearance (Lip Clearance) and the groove angle (Helix Angle), the blade angle is in the range of 80 ° ~ 130 ° depending on the nature of the material to be processed The blade opening angle is in the range of 8 ° to 12 °, and the groove spiral angle is in the range of 20 ° to 32 °.

Conventionally, since the operator grabs the drill by hand and rubs against the rotating grinding wheel to grind the cutting edge, it is impossible to perform accurate work without being skilled, and even a skilled worker can not only take a long time but can also grind precisely. There was a falling issue.

In other words, depending on the wear part of the drill by grinding or grinding the end of the drill using a grinder or grinding machine, the tip of the drill tip is formed by a pair of tapered surface in the spiral direction around the center line by hand It is difficult to match the taper angle as the drill must be rotated and ground after gripping, and there is a problem that the risk of safety accident is caused by cutting the drill by directly contacting the drill to the surface of the rapidly rotating grindstone after gripping by hand. .

To solve this problem, the drill is fixed to a separate jig body, and then the gripping jig body is gripped by hand, and then the machined surface of the drill blade is polished. As a result, not only can not rule out the risk, but also difficult to adjust the angle.

In the above method, as the grinding operation is performed by the direct friction action of the operator's eye, not only the non-skilled person can accurately process the blade tip angle and the blade clearance angle at the original necessary angle, There is a problem that the cutting efficiency of the drill is lowered, and the grinding operation is inefficient due to excessive wear time and work time of the drill due to repeated grinding of the wrongly ground portion several times.

For example, in the grinding operation of various drills, it is necessary to maintain rotational symmetry of which the center of the grinding edge is accurate and the inclination angle (eg, cutting angle, escape angle, thinning angle, etc.) and length of each portion are accurate. This was mainly done by the operator's sense of hand.

In addition, the tensile strength and hardness are different according to the material of the workpiece, and accordingly, the drill angle (blade tip angle), blade length blade length, chief edge angle, web thinning, etc. must be ground differently. It is manufactured (produced) and sold without angles, cutting edges, and without chirped edges and web thinning. It also mimics the original manufacturing angle during drill grinding, and also vibrates, shakes, and shakes in the grinding machine. There is a mechanical rejection due to this, the users are then used according to the material and hardness, tensile strength at that time, but there was a problem that the work is difficult, difficult and productive.

In addition, conventional grinders grind the blade tip angle, blade clearance, and groove helix angle of the drill, so if the length of the drill is short, such as all drills, power transmission, torsion and shaking are much less advantageous, but the web becomes wider (longer) As it is not helpful as a drill grinding machine, and as the blade tip angle, blade clearance angle, and groove helix angle become larger, the drill edge becomes sharper, which reduces the life and rotation speed (RPM). There is a disadvantage that the blade of the drill outer diameter is long worn without being treated cleanly.

Conventional drill grinders generally correct the blade tip angle and sharply grind the blade length equally and carefully check the grooved spiral angle (lead angle) to maintain the same blade tip angle as the saddle, and as the length of the drill becomes shorter, There is a problem in that the drill efficiency is lowered because the web widening is not considered at all.

In other words, due to the lack of chip edge angle and web thinning, there is no useful value and uneven balance of grinding wheel components such as grindstones, binders, and pores' physical properties and grinding wheel weight. The same grinding effect could not be achieved, and therefore, the use of diamond wheels, internal grinding wheels, or low-weight grinding wheels had to be used.

It is an object of the present invention to provide a drill grinding device for grinding the blade edge of a drill worn by use so as to be ground in the same shape as the first drill.

It is another object of the present invention to provide a drill grinding device which can grind under the same conditions even if a non-skilled person does not pretend to grind and grind with a new drill like conventional drill grinders. It is characterized by.

Another object of the present invention is to provide a drill grinding device that can greatly reduce mechanical rejection and further refine the grinding by absorbing vibrations and vibrations during drilling by using a brace spring by a buffer spring.

Still another object of the present invention is characterized in that the pedestal further comprises an angle adjusting means for adjusting the pedestal to be inclined at a predetermined angle.

Another object of the present invention is characterized in that the additional means for transporting the pedestal forward, rearward and left and right.

The present invention provides a drill grinding apparatus comprising: first and second holders (3) and (4) to which the front and rear ends of a drill (2) are fitted, and a shaft pipe (5) to which the first holder (3) is fastened, A tubular body 6 which is installed to be detachably coupled to the hollow part of the shaft tube 5, a second holder 4 which is fastened to the tubular body 6, and is installed inside the tubular body 6 and is provided with a second holder. (4) holding means (7) for holding the support, fixing means (8) for fixing the pipe body (6) coupled to the hollow portion of the shaft pipe (5), and the shaft pipe (5) 5) a drill grinding device comprising a shaft bearing (9) and a shaft bearing support (12) for supporting the rotation of 360 ° and a rotation suppressing means (11) for suppressing rotation of the shaft pipe (5). In;
An angle adjusting means 13 for adjusting the shaft bearing pedestal 12 to be inclined at a predetermined angle, a conveying means for transferring the shaft bearing pedestal 12 to the front, rear, left and right, and the first holder; Drill (2) through hole (3a) formed in (3), the drill (2) coupling groove (4a) formed in the second holder (4), and the first and second holder (3) (4) Curved surfaces 3b and 4b respectively formed at the inlet portion of the head), the protruding frame 3c for locking the shaft tube 5 formed on the outer circumference of the first holder 3, and the length of the tube 6 Hollow portion 22 having a predetermined inner diameter formed inside the direction, second holder 4 coupling hole 23 formed in the tubular body 6, and screw portion 24 formed on the outer circumference of the coupling hole 23. And a nut 25 fastened to the threaded portion 24 and a drill 2 through-hole 27 formed in the nut 25.
In addition, the holding means 7 may include a rubber support 28 having a rear surface contact with the second holder 4, a spring 29 holding the rubber support 28, and the spring 29. It further comprises a support 30 for supporting the, and an adjustment mechanism 31 for adjusting the elastic force of the spring 29.

In the present invention, the drill grinding device is in contact with the grinding wheel in the state in which the worn drill is fixed to the grinding device to grind, thereby preventing injuries and manual grinding effects by manual grinding. And grinding can be done accurately.

The present invention has the effect that can be precisely ground with a grinding wheel in a state in which the drill is restrained at a predetermined angle by using a grinding device provided with a holding means.

In addition, the present invention can maintain the drill at the grinding angle by the angle adjustment means, there is an effect that can be efficiently ground by moving the drill freely before and after and left and right by the pedestal conveying means.

In addition, the present invention is capable of grinding not only the drill grinding but also the end angles of end mills, taps, center drills, NC drills, etc., and by attaching a reading device, the outer diameters of drills and end mills can be automatically or manually ground with a grinder. There is.

In addition, in the case of all drills in which the length of the drill 2 is shortened due to frequent grinding or breakage, even a highly skilled person is difficult or impossible to hold and grind by hand, but in the present invention, the position of the pipe supporting the rear end of the drill) Because it is a configuration that can move all the unskilled and even beginners, it is effective to grind all the drills easily and simply.

In addition, the present invention can be corrected by the feed means and the angle adjusting means to not only correct the blade tip angle and blade clearance angle and the chip edge angle, but also to make the blade length the same and to achieve accurate web thinning. Since there is no slip by the accurate web thinning when drilling the hole, there is no need for the centering work, and it has the effect of extending the life by 2 times and cutting power by 2 times more than the new drill.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the exemplary embodiments of the present invention, the same elements in the drawings are denoted by the same reference numerals as much as possible, and detailed descriptions of related well-known structures and functions will be omitted so as not to obscure the subject matter of the present invention.

1 is a perspective view of a drill grinding device 1 of the present invention shown as an example, FIG. 2 is a sectional view thereof, and FIG. 3 is a perspective view of an exploded state.

The drill grinding device 1 of the present invention includes a first and second holders 3 and 4 to which the front and rear ends of the drill 2 are fitted, and a shaft tube 5 to which the first holder 3 is fastened. , The tubular body 6 installed to be detachably coupled to the hollow tube 5, the second holder 4 fastened to the tubular body 6, and the second holder 4 installed inside the tubular body 6. And a fixing means 8 for fixing the pipe body 6 coupled to the hollow part of the shaft pipe 5, a shaft pipe 5 being rotated 360 °. It consists of a shaft bearing (9) (10) which can be supported so that it can be supported, a rotation inhibiting means (11) which suppresses rotation of the shaft pipe (5), and a pedestal (12) to which the shaft bearings (9) and (10) are fixed. .

The pedestal 12 is provided with an angle adjusting means 13 for adjusting the pedestal 12 to be inclined at a predetermined angle.

Under the pedestal 12, a conveying means for transferring the pedestal 12 to the front and rear and to the left and right is further configured.

In the present invention, the tip of the drill 2 is supported by the first holder 3 fastened to the shaft tube 5, and the rear end of the drill 2 is supported by the second holder 4 fastened to the tube 6. The fixed position is supported according to the length of the drill (2) is supported, coupled to the hollow portion of the shaft tube (5), the second holder (4) is an impact generated when grinding by the gripping means (7) This is buffered.

The first and second holders 3 and 4 are made of a synthetic resin material so that rotation of the drill 2 coupled thereto can be suppressed, and the first holder 3 is a through hole 3a through which the drill 2 penetrates. ) Is formed, and the second holder 4 is formed with a coupling groove 4a to which the rear end of the drill 2 is coupled. The inner diameter of the through hole (3a) and the engaging groove (4a) is the same or almost the same size as the outer diameter of the drill (2).

The first and second holders (3) and (4) are not only lightweight but also excellent in elasticity and resilience, such as acetal or urethane containing a large amount of PP series or urethane, and the like. Not only this is easy, but also the surface (outer peripheral surface) of the combined drill 2 and the inner peripheral surfaces of the first and second holders 3 and 4 are in surface contact and in close contact with each other, so that the rotation of the drill 2 (surface phenomenon) is suppressed. It works.

Inclined or curved surfaces 3b and 4b are formed at the inlet portions of the first and second holders 3 and 4, respectively, to facilitate engagement of the drill 2, and a shaft tube is formed on the outer circumference of the first holder 3, respectively. A protruding frame 3c on which the front part of 5 is locked is formed so that a firm fastening of the first holder 3 is achieved and its flow is prevented.

The inner diameters of the through holes 3a and the coupling grooves 4a of the first and second holders 3 and 4 vary depending on the size (outer diameter) of the drill 2. Therefore, when the size of the drill 2 is changed to replace the first and second holder (3) (4) having a through hole (3a) and the coupling groove (4a) of the inner diameter corresponding thereto, and the shaft tube having a fastening structure ( 5) and the tubular body (6) is installed so as to be separable.

The shaft tube 5 supporting the tip of the drill 2 has a length in which the drill 2 and the tube body 6 can be accommodated, and a hollow portion 14 having a predetermined inner diameter is formed in the longitudinal direction, and the front portion of the shaft tube 5 is formed. 1 The stepped portion 15 is formed in which the inner diameter is reduced so that the holder (3) can be caught, the threaded portion 16 is formed on the outer periphery of the stepped portion 15, the screwed portion of the nut 17 Is fastened, and the nut 17 is formed with a through hole 19 having a smaller outer diameter such that the drill 2 can pass therethrough and the protruding frame 3c of the first holder 3 can be pressed.

The tubular body 6 supporting the rear end of the drill 2 has an outer diameter smaller than the inner diameter of the shaft tube 5 so that it can be easily coupled to the hollow portion 14 of the shaft tube 5, and the hollow portion 14 of the shaft tube 5. ) And then fixed by the fixing means (8).

The fixing means (8) consists of a screw hole (20) formed in the shaft tube (6) and a piece (21) fastened to the screw hole (20) and then pressurized to fix the surface of the tube (6). The shape of (6) is preferably a polygon such as a hexagon or an octagon so that the end portion of the piece 21 can be pressed in surface contact.

The tubular body (6) is long enough to accommodate the rear end of the drill (2) and the gripping means (7), a hollow portion (22) of a predetermined inner diameter is formed in the longitudinal direction, and the second holder (4) at the front portion. ) Is coupled to the coupling hole 23 is formed, a threaded portion 24 is formed on the outer circumference, the threaded portion of the nut 25 is fastened to the threaded portion 24, the drill 2 is attached to the nut 25 The through hole 27 is formed to pass through.

The through hole 27 maintains an inner diameter through which the drill 2 can penetrate, but is configured such that a part of the second holder 4 is engaged to prevent the second holder 4 from moving forward.

The tungsten means 7 installed in the hollow part 22 of the tubular body 6 has a round rubber support 28 in which the rear surface of the second holder 4 is in surface contact with each other, as shown in FIGS. 2 and 3. , A spring 29 for supporting the rubber support 28, a support 30 for supporting the spring 29, and an adjusting device 31 fastened to the tubular body 6 to adjust the elastic force of the spring 29. ) And the rubber support 28 which is in surface contact with the second holder 4 absorbs various impacts together with the spring 29.

The gripping means 7 absorbs the vibration and vibration generated when grinding the drill 2, thereby greatly relieving mechanical rejection, and enabling sophisticated grinding.

In the present invention, when the size of the drill 2 is large or long, the fixing position of the pipe 6 installed on the shaft tube 5 is moved backward, and then fixed by using the fixing means 8, on the contrary, If the size of the (2) is small or the length is short, the fixed position of the tube 6 installed in the shaft tube 5 is moved to the front and then fixed using the fixing means (8), of course, the drill (2) It is used to replace the first and second holders 3 and 4 of size corresponding to the size.

On the other hand, in the case of all drills in which the length of the drill 2 is shortened due to frequent grinding or breakage, even a highly skilled person is difficult or impossible to hold and grind by hand, but in the present invention, the rear end of the drill 2 is supported. Since the position of the tube 6 can be moved, the position of the tube 6 coupled to the hollow part of the shaft tube 5 is appropriately moved along the length of the drill, and then the tube 6 is fixed by the fixing means 8. It is possible to grind easily and easily even for inexperienced and beginners because the grinding work.

Since the second holder 4 is structured so that the drill 2 can be pushed forward, the rigid holder as shown in the first holder 3 is not maintained, and thus the second holder 4 can rotate. A plurality of protrusions 32 are formed on the longitudinal outer circumferential surface at predetermined intervals, and a plurality of concave recesses 33 to which the protrusions 32 are coupled to the longitudinal inner circumferential surface of the coupling groove 23 are formed at predetermined intervals so as to form a second interval. Unnecessary rotation of the holder 4 is prevented.

In addition, since the shaft tube 5 installed on the shaft bearings 9 and 10 can rotate 360 °, rotation inhibiting means 11 that can be fixed at 0 ° and 180 ° when grinding the drill 2 is installed. .

As shown in FIG. 4, the rotation inhibiting means 11 includes coupling grooves 34 and 35 formed above and below the shaft tube 5, a vertical groove 36 formed in the pedestal 12, and the vertical groove 36. It consists of the rod 37 inserted in the.

" 형상이다.The rod 37 has a vertical portion 37a that moves up and down along the vertical groove 36, a locking portion 37b coupled to one coupling groove among the coupling grooves 34 and 35, and a vertical portion 37a. And the connecting portion 37c for connecting the locking portion 37b to suppress the rotation of the shaft tube 6 "

Shape.

In the above, the engaging portion 37b is coupled to one side coupling groove 34, and the grinding wheel is contacted with one side blade of the drill 2 in a state in which the rotation of the shaft pipe 5 is suppressed, thereby grinding the drill 2 After grinding one side of the blade, the operator lifts the catching portion 37b to separate it from the coupling groove 34, and then rotates the shaft pipe 5 by 180 ° to engage the locking portion 37b with the other coupling groove 34. The rotating shaft tube 5 is fixed, and in this state, the other edge of the drill 2 may be ground on the rotating grinding wheel, and the drill 2 may be ground by repeating this process in an appropriate number of times.

When the stopper 39, 40 is formed on the lower portion of the rod 37 and the rod 37 protruding upward from the pedestal 12, the rod 37 is separated from the pedestal 12 and excessively lowered. Can be prevented. The distance between the stoppers 39 and 40 is a distance that can be easily coupled to and separated from the engaging grooves 34 and 35 by lifting the engaging portion 37b.

In the present invention, the reinforcement portion 12a may be configured on the bottom surface of the pedestal 12 to reinforce the strength.

On the other hand, if you want to replace the drill (2) having the same size and outer diameter or different size and outer diameter, the drill (2) is removed by removing the tubular body (6) installed in the shaft pipe (5) while the fixing means (8) is relaxed. ) Is separated from the second holder 4, the nut 25 fastened to the tubular body 6 is separated to separate the second holder 4 to which the coupling groove 23 is coupled, and then the shaft pipe ( 5) the nut 17 is fastened to the first holder 3, and then the first holder 3 is detached, and then the drill 2 fitted to the first holder 3 is removed. (4) are each separated.

In the above, even when the second holder 4 is separated, the separation of the rubber support 28 supported by the spring 29 is prevented by the locking projection 38 in which the inner diameter is reduced in the tube 6.

First through holes 3a and coupling grooves 4a having inner diameters corresponding to drill sizes (or outer diameter sizes) to be replaced in a state in which the first and second holders 3 and 4 are separated. , The second holder (3) (4) is coupled to the coupling groove of the shaft tube (5) and the tube (6), respectively, and then fitted by inserting the drill (2) and tightening the nuts (17) (25) of the drill (2) Installation and fixing are completed, and grinding work in this state.

In the present invention, since the drill 2 is touched and buffered to the tip by the fingering means 7, a better grinding operation is achieved.

In the present invention, it is possible to configure a rotation means that can be rotated by 0 ° and 180 ° instead of the rotation inhibition means. For example, as shown in FIG. 7, a timing pulley 42 having a timing belt 41 wound around the shaft tube 5 is fitted and fixed, and one side of the timing belt 41 is disposed at an end portion of the spring 43 fixed to the pedestal 12. And the end of the air cylinder 44, which is installed on the pedestal 12, is connected to the end of the rod 45. When the air cylinder rod 45 protrudes, the timing belt 41 is moved in the spring direction by the restoring force of the spring 43. As the shaft tube 5 rotates while moving, the angles of the shaft tube 5 and the drill 2 stop at the 0 ° position (or 180 ° position), and when the air cylinder rod 45 is immersed, the timing belt 41 airs. While moving in the direction of the cylinder 44, the spring 43 is tensioned and the angles of the shaft tube 5 and the drill 2 stop at the 180 ° position (or 0 ° position).

In the present invention, since the front and rear ends of the drill 2 are fixed by the first and second holders 3 and 4, in the case of a skilled person, the grinding wheel is brought into contact with the rotating grinding wheel while the shaft 5 is held. It can be processed. In this case, the configuration of the pedestal 12 and the shaft bearings 9 and 10 can be omitted.

On the other hand, when grinding the drill 2 is to be ground at an angle that is suitable for the material and the use, it can be provided with a device that can be easily ground even non-skilled person (or beginners).

For example, as shown in FIGS. 1 to 3 and 9, the angle adjusting means 13 is installed on the vertical member 47 and the pedestal 12 installed on the base 46, and the shaft tube 5 and the drill ( 2) can be configured to tilt.

The angle adjusting means 13 may be a torque wrench (color), for example, a hinge structure of the pedestal 12 and the vertical member 47 to enable the rotation, the torque wrench used in the known torque wrench By installing a mechanism on the hinge 48 is configured to be able to adjust the pedestal 12 to a predetermined angle of inclination.

For example, the angle of rotation of the shaft tube 5 is adjusted by using a pedestal 12 corresponding to the handle of the torque wrench, and the pedestal (using a direction control switch 49 of the torque wrench mechanism installed on the hinge 48 side). The direction can be set when adjusting the rotation angle of 12).

In addition, when grinding the drill (2) by using a transfer means can move the drill (2) little by little depending on the degree of grinding, using the angle adjusting means (13) blade tip angle and blade margin of the drill (2) The angle and the chief edge angle can be corrected, the blade length can be the same, and accurate web thinning can be achieved.

When grinding the drill (2) using this grinding process, there is no slipping due to accurate web thinning, which eliminates the need for centering, and extends life by two times and improves cutting power by more than two times. It works.

FIG. 7 shows a conveying means capable of moving the drill 2 forward, backward, left, and right. As the drill 2 is ground, it is cut little by little so that the drill 2 is approached by the grinding wheel 18. Or shift the grinding position, and also need to rotate the drill 2 180 °, replace it with a new drill 2, or reverse the drill 2 if necessary, and grind by grinding. It is necessary to change the grinding position because part (18) is worn out and grinding efficiency is reduced.

That is, when the drill (2) is cut to advance to the grinding wheel 18 by using a transfer means to maintain the grinding degree is the same or adjust the grinding degree appropriately. By appropriately moving the drill 2 to the left and right, the drill 2 is brought into contact with the grinding figure 18, which is not worn or greatly worn, so that grinding can be prevented.

The transfer means is provided on the base 46, the LM guide 51 to move forward and backward by the air cylinder 50, and the LM guide 52 which is configured on the LM guide 51 to move left and right It consists of. The LM guides 51 and 52 are composed of lower LM rails 51a and 52a and LM blocks 51b and 52b coupled thereto, and the LM block 51b of the LM guide 51 is an air cylinder. It is connected to the end of the rod 50a of 50, and it is comprised so that it may move forward and backward.

In the present invention, when the drill 2 is rotated 180 ° for the opposite grinding, or replaced with a new drill 2, or if the drill 2 is reversed as necessary, the air is controlled using an unillustrated controller. When the rod 50a of the cylinder 50 is retracted, the LM block 51b of the LM guide 51 and the mechanism or parts installed on the upper portion of the cylinder 50 are retracted. When the rod 50a of the air cylinder 50 is advanced by using, the LM block 51b of the LM guide 51 and the mechanisms or parts installed thereon are advanced, and the movement stroke is in and out of the rod 50a. It becomes a distance.

By displaying a scale 53 on one surface of the LM rail 52a of the LM guide 52, the movement distance can be accurately adjusted. The LM guide 52 is a structure that moves by intentional force of the operator without moving in the grinding operation or usual.

In the present invention, accurate web thinning may be achieved by finely moving the LM block 52b of the LM guide 52. Accurate web thinning of the drill 2 does not slip when a hole is drilled into the workpiece, thus eliminating the need for centering.

As shown in FIG. 8, the forward and backward distances of the drill 2 may be finely adjusted using the rack 54 and the pinion 55 instead of the air cylinder 50.

That is, the rack 54 is fixed on the base 46, the pinion provided with the handle 56 and the shaft 57 is shaft-installed inside the block 58, and then engaged with the rack 54 to handle the handle ( The degree of forward and reverse movement of the drill 2 is determined by the degree of forward and reverse rotation of 56).

The block 58 is linearly moved under the guidance of the guide installed in the moving direction, the handle 57 protrudes and is exposed to the outside of the block 58, and the LM guide 52 is formed on the block 58. .

In the present invention, the proximity switch 59 is installed on the base 46 to detect the LM block 51b approach of the LM guide 51 and excessively approach the air cylinder 50 to stop the drill 2. It can also be comprised so that grinding by contacting with the grinding grinding wheel 18 excessively may be prevented.

The drill grinding device 1 of the present invention can grind not only the drill grinding but also the end angles of end mills, taps, center drills, NC drills, and the like. It can be ground.

The present invention as described above is not limited to the present embodiment and the accompanying drawings, various substitutions, modifications and changes are possible within the scope without departing from the technical spirit of the present invention, which is usually in the art It is self-evident for those who have knowledge.

1 is a perspective view showing an example of the present invention.

2 is a cross-sectional view showing an example of the present invention.

3 is an exploded perspective view showing an example of the present invention.

4 and 5: partial cross-sectional view of the rotation control means of the present invention.

6 is a partial cross-sectional view of the second holder of the present invention.

7 is a perspective view of a moving means shown as an example of the present invention.

8 is a perspective view of another embodiment of the present invention rotation suppression means.

9 is an exemplary view of the present invention use state.

<Explanation of symbols for the main parts of the drawings>

(1)-Drill Grinding Device (2)-Drill

(3) (4)-holder (3a)-through-through

(4a)-engagement groove (3c)-protrusion

(5)-shaft tube (6)-tube

(7)-meaning means (8)-fixing means

(9) (10)-Axle bearings (11)-Rotational suppression means

(12)-base (13)-angle adjustment

(14) (22)-Hollow Part (15)-Joint

(16) (24)-Thread (17) (25)-Nut

(18)-grinding wheel (19) (27)-penetration

(20)-Screwdriver (21)-Piece

(23) (34) (35)-Joining Groove (28)-Rubber Support

(29) (43)-Spring (30)-Support

(31)-Regulator (32)-Protrusion

(33)-Indentation Groove (36)-Vertical Groove

(37)-sealing (37a)-vertical

(37b)-Hang Part (37c)-Connection

(38)-Jang Jaw (39) (40)-Stopper

(41)-Timing Belt (42)-Timing Pulley

(44) (50)-Air Cylinder (45) (50a)-Air Cylinder Rod

(46)-Expectation (47)-Vertical Members

(48)-Hinge (49)-Directional switch

(51) (52)-LM Guide (51a) (52a)-LM Rail

(51b) (52b)-LM Block (53)-scale

(54)-Rack (55)-Pinion

(56)-Handle (57)-Axle

(58)-Block (59)-Proximity Switch

Claims (5)

delete First and second holders 3 and 4 into which the front and rear ends of the drill 2 are fitted, the shaft tube 5 to which the first holder 3 is fastened, and the hollow portion of the shaft tube 5. And a gripping means installed on the tubular body 6 to be detachably coupled to the tubular body, the second holder 4 fastened to the tubular body 6, and mounted inside the tubular body 6 and holding the second holder 4. (7), a fixing means (8) for fixing the tubular body (6) coupled to the hollow portion of the shaft tube (5), and the shaft tube (5) is installed on both outer peripheral sides of the shaft tube (5) can rotate 360 ° A drill grinding device comprising: a shaft bearing (9) (10) and a shaft bearing pedestal (12) for supporting the bearing, and a rotation inhibiting means (11) for suppressing rotation of the shaft pipe (5); Angle adjusting means (13) for adjusting the shaft bearing pedestal (12) to be inclined at a predetermined angle; Conveying means for conveying the shaft bearing pedestal 12 before and after and left and right; A drill (2) through hole (3a) formed in the first holder (3); A drill (2) coupling groove (4a) formed in the second holder (4); Curved surfaces 3b and 4b respectively formed at the inlet portions of the first and second holders 3 and 4; A protruding frame (3c) for locking the shaft tube (5) formed on an outer circumference of the first holder (3); A hollow part 22 having a predetermined inner diameter formed inside the longitudinal direction of the tubular body 6; A second holder 4 coupling hole 23 formed in the tubular body 6; A screw part 24 formed on an outer circumference of the coupling hole 23; A nut 25 fastened to the screw part 24; A drill (2) through-hole (27) formed in the nut (25); Drill grinding device comprising a. delete delete The method according to claim 2; The fingering means 7 A rubber support 28 whose rear surface of the second holder 4 is in surface contact; A spring 29 holding the rubber support 28; A support 30 for supporting the spring 29; Adjusting device 31 for adjusting the elastic force of the spring 29; Drill grinding device comprising a more.

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