JP5581865B2 - Honing machine - Google Patents

Description

  The present invention relates to a honing apparatus for performing honing on a drill used for drilling.

  Conventionally, in drill honing, a worker holds a file (such as a diamond file) in his / her hand, applies the file to the upper side of the drill's cutting edge, and reciprocates the file back and forth to form a honing surface. .

  What is particularly important in this honing process is to make the file pressing pressure to the drill constant and to make the file posture constant during machining. By the way, that the posture of the file during machining is constant, that is, the inclination angle of the file corresponding to the honing angle does not change, and the traveling direction of the file does not change from side to side when the machining part is viewed from above. .

  However, in the conventional method, the file pressing pressure on the drill and the posture of the file during machining are not stable, resulting in large variations in honing width, honing angle, honing surface roughness, etc., leading to frequent machining defects. .

  In view of the above points, an object of the present invention is to stabilize a file pressing pressure on a drill and a posture of a file during processing.

In order to achieve the above-mentioned object, in the invention according to claim 1, a honing apparatus that reciprocates the file (21) to form a honing surface on the cutting edge of the drill (6) fixed to the fixing jig (7). A linear guide (11) in which the block (112) is linearly reciprocated while being guided by the rail (111), a slide member (13, 14) fixed to the block (112) and reciprocating, and a fulcrum A swing arm (15) mounted on the slide member (13, 14) so as to be swingable around the center, and a balance weight (18) mounted on one end side of the fulcrum of the swing arm (15). A file (21) is mounted on the other end side of the fulcrum in the swing arm (15).

  According to this, since the file (21) is pressed against the drill (6) by the moment of the swing arm (15), the file pressing pressure against the drill (6) can be stabilized. Further, the reciprocating direction of the slide members (13, 14) to which the swing arm (15) is attached is regulated by the rail (111), and the swing arm (15) hardly swings. 21) can be stabilized.

  In addition, there is little variation in honing width, honing angle, honing surface roughness, etc. due to the stability of the file pressing pressure to the drill (6) and the stability of the file (21) during processing. Thus, honing with stable machining accuracy can be easily realized.

  According to a second aspect of the present invention, in the honing apparatus according to the first aspect, the balance weight (18) is attached to the swing arm (15) so that the distance to the fulcrum is adjustable. And

  According to this, the moment of a swing arm (15) can be adjusted and by extension, the file pressing pressure to a drill (6) can be adjusted.

  According to a third aspect of the present invention, in the honing apparatus according to the first or second aspect, the file (21) is mounted on the swing arm (15) in a state in which the circumferential position of the file (21) is adjustable. It is characterized by.

  By the way, the file (21) for the honing process of the drill (6) has a half-moon cross-sectional shape, and the use surface of the file (21) depends on the processing position (distance from the drill center to the current processing site). Although it is necessary to select, according to the invention described in claim 3, it is possible to select a use surface of the file (21).

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

It is a top view of the processing system containing the honing processing apparatus which concerns on one Embodiment of this invention. FIG. 2 is a front view of the processing system of FIG. 1 with a camera unit and a monitor omitted. FIG. 3 is a plan view of FIG. 2. It is sectional drawing which follows the AA line of FIG. It is a top view of the camera unit of FIG. FIG. 6 is a right side view of FIG. 5.

  An embodiment of the present invention will be described. 1 is a plan view of a machining system including a honing apparatus according to an embodiment, FIG. 2 is a front view of the machining system in FIG. 1 with a camera unit and a monitor omitted, and FIG. 3 is a plan view of FIG. 4 is a cross-sectional view taken along line AA of FIG. 2, FIG. 5 is a plan view of the camera unit of FIG. 1, and FIG. 6 is a right side view of FIG.

  As shown in FIG. 1, the machining system includes a honing machine 1, a camera unit 3, a monitor 5, a drill fixing jig 7 that fixes a drill 6, and a base plate 8. The honing apparatus 1 and the drill fixing jig 7 are simply mounted and used without being fixed to the base plate 8. The camera unit 3 is used by being fixed to the base plate 8. M is an operator.

  As shown in FIGS. 2 to 4, the honing apparatus 1 includes a linear guide 11 that is guided by a rail 111 and in which two blocks 112 reciprocate linearly. The block 112 is configured to reciprocate linearly in parallel with the upper surface of the base plate 8 (that is, in the horizontal direction). A block stopper 12 that defines the reciprocating range of the block 112 is fixed to both ends of the rail 111.

  A plate-like slide plate 13 is fixed to the two blocks 112, and a slide holder 14 having a U-shaped cross section is fixed to the slide plate 13. Note that the slide plate 13 and the slide holder 14 constitute a slide member of the present invention.

  A swing arm 15 is attached to the slide holder 14 so as to be swingable with respect to the slide holder 14. More specifically, a part of the swing arm 15 is located inside the slide holder 14 and the remaining part is located outside the slide holder 14. A pin 16 as a fulcrum integrated with the swing arm 15 is rotatably supported by a bearing 17 fixed to the slide holder 14.

  A balance weight 18 is attached to one end side of the swing arm 15 from the pin 16. More specifically, a shaft 19 on which a male screw is formed is screwed to one end side of the swing arm 15, and a balance weight 18 is screwed to the shaft 19. Then, by adjusting the position of the balance weight 18 with respect to the shaft 19, the distance between the pin 16 and the balance weight 18 is adjusted, and as a result, the moment of the swing arm 15 is adjusted. After adjusting the position of the balance weight 18, the balance weight 18 is positioned and fixed to the shaft 19 by the lock nut 20.

  A cylindrical portion 151 having a through hole (not shown) having a circular cross section is formed on the other end side of the pin 16 in the swing arm 15. A file for holding the file 21 in the through hole of the cylindrical portion 151. A holder 22 is rotatably inserted. A hole (not shown) into which the file 21 is inserted is formed at the end of the file holder 22 opposite to the pin 16. After the file 21 is inserted into this hole, the file is inserted with a screw (not shown). 21 is fixed to the file holder 22.

  Both ends of the file holder 22 protrude from the through hole of the cylindrical portion 151, and a rotation knob 23 for rotating the file holder 22 is fixed to the protruding portion on the pin 16 side of the file holder 22. The operating surface of the file 21 is selected by operating the rotary knob 23 to rotate the holder 22.

  Further, a spring 24 that urges the file holder 22 toward the side opposite to the pin 16 is disposed on the protruding portion on the side opposite to the pin 16 in the file holder 22. The rotating knob 23 is pressed against the cylindrical portion 151 by the spring force of the spring 24. The pressing force is such that when the operator M operates the rotary knob 23, the file holder 22 and the rotary knob 23 can be easily rotated, and when the honing surface of the drill 6 is processed with the file 21, the file is pressed. The holder 22 and the rotary knob 23 are set so as not to rotate.

  A stopper bolt 25 that defines the swing range of the swing arm 15 is screwed onto the slide plate 13. More specifically, by adjusting the position of the balance weight 18, a counterclockwise moment is generated in the swing arm 15 on the paper surface of FIG. 2, and accordingly, the cylindrical portion 151 abuts against the stopper bolt 25. 2, the swing range of the swing arm 15 in the counterclockwise direction is defined.

  When the cylindrical portion 151 is in contact with the stopper bolt 25, the line connecting the pin 16, the balance weight 18, and the file 21 is substantially parallel to the upper surface of the base plate 8 (ie, substantially horizontal) The axis of the file 21 is also substantially parallel to the upper surface of the base plate 8.

  The honing apparatus 1 is configured such that other structural members integrally reciprocate linearly in a substantially horizontal direction with respect to the rail 111 and the block stopper 12.

  As shown in FIGS. 1, 5, and 6, the camera unit 3 includes a camera (for example, a CCD camera) 31 for photographing a honing portion of the drill 6, and an image photographed by the camera 31 is displayed on the monitor 5. It has become so.

  The camera 31 is fixed to the horizontal slide unit 32, and the horizontal position of the camera 31 (the horizontal position in FIG. 1) is adjusted by operating the dial 321 of the horizontal slide unit 32.

  The horizontal slide unit 32 is fixed to the vertical slide unit 33, and the vertical position of the camera 31 and the horizontal slide unit 32 is adjusted by operating the dial 331 of the vertical slide unit 33, so that the camera 31 is focused. It has become.

  A support pole 34 is fixed to the base plate 8, and the vertical slide unit 33 is fixed to the support pole 34 at an appropriate height position by a unit holder 35.

  On the screen of the monitor 5, stickers indicating the necessary honing machining allowances of various drills 6 are affixed so that the honing machining allowance can be easily checked during machining.

  Next, the honing process of the drill 6 by the above processing system will be described. First, the moment of the swing arm 15 is adjusted by adjusting the position of the balance weight 18, and consequently, the pressing pressure of the file 21 against the drill 6 is adjusted. Although the pressing pressure of the file 21 varies depending on the type of the drill 6, it can be adjusted to the pressing pressure corresponding to the type of the drill 6 by adjusting the position of the balance weight 18.

  Further, the positions of the drill 6 and the drill fixing jig 7 are adjusted so that the honing surface of the drill 6 enters the moving range of the file 21. Subsequently, by operating the dial 321 of the horizontal slide unit 32, the horizontal position of the camera 31 is adjusted so that the honing surface of the drill 6 falls within the visual field range of the camera 31. The dial 331 is operated to focus the camera 31.

  Next, the worker M puts a palm on the upper surface of the slide holder 14 and sets a thumb and an index finger on the rotary knob 23. Then, the rotary knob 23 is operated to select the use surface of the file 21, the slide holder 14 and the like are reciprocated, and the drill 6 is viewed with the other hand while the honing surface of the drill 6 is viewed on the monitor 5. The honing process is performed by moving or rotating to the appropriate position.

  According to the present embodiment, since the file 21 is pressed against the drill 6 by the moment of the swing arm 15, the file pressing pressure to the drill 6 can be stabilized.

  Further, since the reciprocating direction of the slide holder 14 and the like is regulated by the rail 111 of the linear guide 11, the reciprocating direction of the slide holder 14 and the like when viewed from above is stabilized, and the slide holder 14 and the like are reciprocated. Even so, since the swing arm 15 hardly swings, the posture of the file 21 during processing can be stabilized.

  As described above, the file pressing pressure to the drill 6 is stabilized and the posture of the file 21 during machining is stable, so that there is little variation in honing width, honing angle, honing surface roughness, and the like. Honing with high processing accuracy can be easily realized.

  In addition, the file 21 always needs to be able to rotate forward / reverse / fully with respect to the drill 6. However, the file 21 can be easily rotated forward / reverse / fully by operating the rotary knob 23 with the thumb and index finger. Can do. Furthermore, the operation of the rotary knob 23 and the reciprocating operation of the slide holder 14 and the like can be performed with one hand.

  Furthermore, conventionally, it was not a work while looking at the machining state, but a microscope check after machining to some extent, so it was quite difficult to fit within the honing width standard (0.025 mm to 0.15 mm depending on the drill type). In this embodiment, the work can be performed while checking the honing width with the monitor 5, so that the work efficiency is improved.

6 Drill 11 Linear motion guide 13 Slide plate (slide member)
14 Slide holder (slide member)
15 Swing arm 18 Balance weight 21 File 111 Rail 112 Block

Claims (3)

A honing apparatus for forming a honing surface on a cutting edge of a drill (6) fixed to a fixing jig (7 ) by reciprocating a file (21),
A linear motion guide (11) guided by a rail (111) and causing the block (112) to reciprocate linearly;
A slide member (13, 14) fixed to the block (112) and reciprocating;
A swing arm (15) mounted on the slide member (13, 14) in a swingable manner around a fulcrum;
A balance weight (18) attached to one end side of the fulcrum in the swing arm (15),
The honing apparatus, wherein the file (21) is mounted on the other end side of the swing arm (15) with respect to the fulcrum.   The honing apparatus according to claim 1, wherein the balance weight (18) is attached to the swing arm (15) in a state in which a distance to the fulcrum is adjustable.   The honing apparatus according to claim 1 or 2, wherein the file (21) is attached to the swing arm (15) in a state in which a circumferential position of the file (21) is adjustable.

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