JP6378800B2 - Workpiece processing equipment - Google Patents

Description

The present invention relates to the processing device of a work for processing a workpiece to be rotating.

  In a metal processing apparatus such as a milling machine or a machining center, a tool is supported by a tool holder when the processing tool is attached to the main shaft, and the tool holder is attached to or detached from the main shaft. Such a tool holder is known and disclosed, for example, in Patent Document 1. The tool holder is connected to the sleeve on the main shaft side by being fitted via a shank.

Japanese Patent Laid-Open No. 7-100720

By the way, since the tool holder is made of an alloy, rust may be generated on the shank surface when used in an environment with particularly high humidity, or when used for aged even if the humidity is not high. Since rust is generated so as to rise from the surface of the smooth shank (that is, the state that "rust floats"), if the rust increases, the adhesion between the shank and the sleeve is impaired, and as a result, when the tool holder is set on the spindle The axial accuracy of the tool holder will deteriorate. Therefore, it is necessary to polish and remove the rust on the shank surface by some means .

In order to achieve the above object, in the first means, the shank of an alloy tool holder for a metal processing apparatus having a shank formed in a convexly curved outer peripheral shape in a truncated cone shape or a cylindrical shape. A grinding device for grinding the tool holder, a support means for rotatably supporting the tool holder about an axis, a drive applying means for rotating the tool holder supported by the support means, and an outer periphery of the shank. A state in which the grinding member holding means for holding the grinding member in a contact state and an operating means for reciprocating the grinding member in a direction intersecting with the circumferential direction of the shank are in contact with the shank. The gist of the invention is that the distance between the grinding member and the shank is always kept constant when reciprocating at a constant angle.
In such a configuration, when grinding the shank of the tool holder, the grinding member is brought into contact with the outer periphery of the shank while rotating the tool holder supported by the support means. Since the distance between the grinding member and the shank is always kept constant when the grinding member is reciprocated without contacting the shank, if the grinding member is brought into contact with the outer periphery of the shank, The applied pressing force is always equal. And since a tool holder rotates, the outer periphery of a shank will be ground in the circumferential direction in the position which the grinding member contacted. Furthermore, by reciprocating the grinding member by the operating means, the entire outer periphery of the shank can be ground with a substantially uniform pressure, and rust can be removed almost uniformly.

  As the “grinding member”, any material or shape can be used as long as it can scrape off rust. As an example, a rubber grindstone in which abrasive grains are dispersed in rubber is preferable in terms of handling and less damage to the metal surface of the shank. The “supporting means” may be any means as long as the tool holder can be rotatably supported around the axis, and the axial direction may be any orientation. As the “drive applying means”, a motor device using electricity as a drive source is generally used. It also includes the case where the support means is rotated manually like a potter's wheel. When the grinding member is reciprocated by the actuating means, it is generally preferable to move linearly parallel to the axial direction. If the reciprocating direction is inclined, the contact amount between the outer surface of the shank and the grinding member is reduced or the contact is not made well. However, the reciprocation may not be absolutely linear and parallel to the axial direction, and the reciprocating path may be different. The “grinding member holding means” preferably supports the grinding member so as to be able to come into contact with and separate from the shank so that the grinding member does not come into contact with the shank when the tool holder is set.

Further, in the second means, in addition to the first means, the grinding member holding means holds the grinding member so as to be able to come into contact with and separate from the outer periphery of the shank, and the grinding member is not in contact with the shank. The gist of the present invention is that the distance between the grinding member and the shank is always kept constant when reciprocating with the above.
Further, the third means is characterized in that, in addition to the first or second means, the grinding member is brought into contact with the outer periphery of the shank with a predetermined urging force by the urging means.
In other words, the grinding member is held in contact with the outer periphery of the shank by the grinding member holding means, but when the grinding member comes into contact with the outer periphery of the shank, it is attached so as to contact with a predetermined (constant) pressure. A predetermined biasing force is applied by the biasing means. The distance between the grinding member and the shank is always kept constant when the grinding member is reciprocated without being in contact with the shank, and the pressing force applied to the shank is always equal when in contact. The power is always given to the shank almost equally. For example, a coil spring or a leaf spring can be used as the urging means. It is also possible to use a cylinder device.
Further, the gist of the fourth means is that the predetermined urging force applied by the urging means can be changed in addition to the third means.
As a result, the biasing force can be changed as appropriate, for example, by changing to a spring having a different strength, depending on the rust condition and the type of grinding member.

The fifth means is characterized in that, in addition to any one of the first to fourth means, the grinding member is configured to be elongated in the reciprocating direction.
If comprised in this way, the reciprocating distance can be shortened and it contributes to the compact design.
The sixth means is characterized in that, in addition to the fifth means, the grinding member is supported so as to be swingable at the center in the longitudinal direction. If comprised in this way, since a grinding member will rock | fluctuate according to the contact surface shape of a shank, it will not be necessary to set a grinding member exactly according to the angle of a shank.

In addition, the seventh means is that, in addition to any one of the first to sixth means, the operating means is driven manually.
In the first place, the reciprocating motion of the grinding member is not so necessary as long as the tool holder rotates at a sufficient speed. For this reason, manually driving the operating means contributes to the weight reduction, cost reduction, and compactness of the apparatus.
The eighth means is characterized in that, in addition to any of the first to seventh means, the angle of the reciprocating direction of the grinding member with respect to the horizontal direction can be changed.
With this configuration, in addition to the above-described operation, the angle of the reciprocating direction of the grinding member can be changed according to the angle of the shank. Therefore, the grinding member is reciprocated without contacting the shank. In this case, the distance between the grinding member and the shank can be kept constant at all times. By changing the angle of the shank, it is possible to grind various tool holders having different shank angles.

In the ninth means, in addition to any one of the first to eighth means, the operating means is a slider crank mechanism, and the grinding member is disposed on a slider that reciprocates in conjunction with rotation of the crank. This is the gist.
This shows a specific example of the operating means. The slider crank mechanism is a typical mechanism that converts the rotational movement of the crank into the piston movement of the slider (or vice versa). Thus, the grinding member can be reciprocated together with the slider by rotating the link.

Further, in the tenth means, in addition to any one of the first to ninth means, the tool holder is supported by the support means so that the shank is disposed below the support position. To do.
That is, the tool holder is supported in a suspended form from above. With such a configuration, it becomes easy to support the tool holder, and the grinding work can be performed by bringing the grinding member into and out of contact with the shank exposed downward.
Further, the eleventh means is characterized in that, in addition to the tenth means, the tool holder is suspended and supported by the support means disposed on the ceiling of the housing.
As a result, the shank to be processed is arranged in the casing, which is advantageous in terms of setting the members in relation to the drive applying means, the grinding member holding means, and the operating means that are also arranged in the casing.
Further, in the twelfth means, in addition to the tenth or eleventh means, the supporting means can be displaced in the direction of the surrounding portion disposed around the outer periphery of the tool holder and the surrounding portion disposed outside the surrounding portion. The tool holder in the loosely fitted state is moved to a predetermined position by displacing the pressure member in the direction of the enclosed part with the tool holder loosely fitted in the enclosed part. The gist is that it is fixed.
With this configuration, the tool holder can be installed relatively easily when it is set in a position where it can be supported, so that the tool holder can be installed relatively easily, and then processed accurately when rotated. Since it can be fixed at a predetermined position where the center of rotation and the axis coincide with each other, work efficiency is improved.

According to the present invention, it is possible to operate the pressing member to move the loosely fitted workpiece and fix it to the support means .

The perspective view of the shank grinding apparatus of the tool holder of embodiment concerning this invention. The front sectional view of the shank grinding device of the same tool holder. The principal part expanded sectional view of the state which the mechanism part main body reverse | retreated and is not contact | abutting to the shank in the shank grinding apparatus of the same tool holder. The exploded front view of the grinding mechanism in the shank grinding device of the same tool holder. The front view of the mechanism part main body in the shank grinding apparatus of the same tool holder. The rear view of the mechanism part main body and rotational force provision part in the shank grinding apparatus of the same tool holder. Explanatory drawing explaining the slider crank mechanism in the shank grinding apparatus of the same tool holder. Explanatory drawing explaining the procedure which mounts | wears a slider with a rubber grindstone unit. Explanatory drawing explaining the procedure which mounts the press top unit in the stopper accommodating part of a rotary body. (A) is a plan view of the push rod unit in a state in which the lever and the push rod are disposed in a rectilinear position, and (b) the lever is displaced from the state of (a) to advance the push rod. FIG. (A) is a top view of a rotary body, (b) is explanatory drawing of the rotary body for demonstrating the broken line p, (c) is explanatory drawing of the state which set the tool holder to the rotary body. The fragmentary fragmentary principal part perspective view explaining the support plate arrange | positioned between side plates in the mechanism part main body back, and the contact block on a support plate. (A) And (b) is explanatory drawing explaining the mount frame of other embodiment. FIG. 14 is an exploded perspective view of the screw rod, link, and pin of FIG. 13.

Hereinafter, specific embodiments of the tool holder shank grinding apparatus of the present invention will be described with reference to the drawings.
First, an outline of the overall configuration will be described with reference to FIGS. 1 and 2. In this general description, FIG. 2 is a diagram seen from the front side of the apparatus, and the left and right sides in FIG.
A shank grinding device (hereinafter referred to as a shank grinding device) 1 of a tool holder W as a work includes a rectangular parallelepiped housing 2. The casing 2 is formed of a thick shaved top plate 3, a bottom plate 4, and a column 5 that is erected at the four corners of the bottom plate 4 and supports the top plate 3. 5 is enclosed from the outside.
A rectangular window 7 is formed on the front surface of the side plate 6 of the housing 2 to visually check the internal grinding state. The window 7 is covered with a transparent acrylic plate 8. A main switch 9 is disposed below the window 7. The interior of the housing 2 is partitioned into first and second storage areas 11 and 12 by a partition wall 10. In the first storage area 11 on the right side, a grinding mechanism 13 serving as a grinding member holding means and an actuating means for grinding the tool holder W is disposed. In the second storage area 12 on the left side, a motor 14 and a capacitor 15 are disposed as drive applying means. A support mechanism 16 for rotatably supporting a tool holder W serving as a work is disposed on the top plate 3 of the housing 2. A pair of transport handles 17 are disposed on the left and right sides of the top plate 3. A transparent acrylic case 18 surrounding the tool holder W set on the support mechanism 16 is disposed on the top plate 3. The case 18 is rotatably connected via an arm 20 to a rotation bearing 19 a of a pair of front and rear leg members 19 erected on the top plate 3. The arm 20 on the front side (near side in FIG. 1) has a protruding portion 20a protruding to the side of the leg member 19, and the case 18 rotates from the use state of FIG. 1 with the protruding portion 20a as a lever. The bearing 19a can be rotated upward with the fulcrum as a fulcrum (the case 18 is in contact with the left carrying handle 17 in the most rotated state). An energization switch 24 is disposed at a position adjacent to the left leg member 19.

Next, a specific structure will be described in more detail. In the following description, the left and right sides in FIG. 2 are assumed to be front and rear, respectively, and the left and right sides in FIG.
As shown in FIG. 2 to FIG. 7, the grinding mechanism 13 disposed in the first storage region 11 of the housing 2 is made of an alloy base 21 and a mechanism unit main body slidably disposed on the base 21. 22 and a rotational force applying unit 23 that gives drive to the mechanism unit main body 22.
As shown in FIG. 4, the gantry 21 includes a base surface 21 a composed of an inclined surface (and a plane) that climbs forward. The angle of the base surface 21a with respect to the horizontal direction matches the taper angle of the shank S with respect to the axial direction of the tool holder W. A pair of front and rear bearing blocks 25 are fixed on the base surface 21a. As shown in FIGS. 5 and 6, a pair of front and rear bearing blocks 25 are disposed at positions that are mirror images on the left and right sides of the gantry 21 (four bearing blocks 25 in total). A push rod support frame 26 is fixed to the rightmost side of the base surface 21a. As shown in FIG. 6, the push rod support frame 26 is composed of a pair of left and right leg frames 27 and a connecting frame 28 that is installed at the upper and lower positions of the both leg frames 27. A projecting portion 28a is formed from the center of the connecting frame 28 toward the rear, and a push rod unit 29 is fixed on the projecting portion 28a. As shown in FIGS. 2, 3, and 10, the push rod unit 29 includes a push rod 31 that is inserted into a guide tube 30 a formed in the case 30, and a lever 32 that is pivotally attached to the case 30. And a link member 33 connected to the side of the rotation center in the vicinity of the rotation center of the push rod 31 and the lever 32. The push rod 31 has a retracted position where the lever 32 and the push rod 31 shown in FIG. 10A are arranged in a substantially straight line, and the lever 32 shown in FIG. It is possible to take two positions of the advanced position with the displacement. As shown in FIGS. 1 and 2, since the overhanging portion 28 a is exposed outward from the opening 34 formed in the side plate 6, the push rod unit 29 is also disposed at an outer position adjacent to the opening 34. Only the push rod 31 moves back and forth in the housing 2.

As shown in FIGS. 3 to 6, the mechanism body 22 has a slider crank mechanism disposed at an upper position with respect to a base plate 35 disposed in the vicinity of the center in the vertical direction, and a mechanism for mounting the frame 21 at a lower position. It is installed. First, the configuration of the slider crank mechanism will be described. On the base plate 35, a pair of front and rear side plates 36 are disposed at positions that are mirror images before and after the base plate 35 (a total of four side plates 36). The side plate 36 stands vertically with respect to the upper surface 35 a formed on the plane of the base plate 35. A first slide shaft 37 is installed between the front and rear side plates 36 in an inserted state. The first slide shafts 37 arranged one by one on the left and right are arranged so as to be equidistant from the upper surface 35a of the base plate 35 and parallel to each other in the installed state. An interval holding shaft 38 is disposed between the front and rear side plates 36 at a position below each slide shaft 37 (near the base plate 35). A slider frame 39 is suspended and supported by two (a pair of front and rear) slide shafts 33 via a first slide block 44. The slider frame 39 is formed in a square ring shape by a side frame 40 fixed to the first slide block 44 and a shaft support frame 41 arranged in the vertical direction. A pair of slider guide shafts 42 are arranged in parallel between the shaft support frames 41 arranged in parallel in the vertical direction. As shown in FIGS. 2 to 4, a coil spring 43 as a biasing means is biased between the first slide block 44 and the side plate 36 disposed rearward on the first slide shaft 37. The slider frame 39 is always pressed forward by the coil spring 43 through the first slide block 44.
As shown in FIG. 5, a slider 45 is disposed in the slider frame 39 so as to be slidable in the vertical direction while being inserted through the slider guide shaft 42. A rubber grindstone unit 46 is attached to the slider 45 so as to be swingable in the vertical direction. The configuration of the slider 45 and the rubber grindstone unit 46 will be described. As shown in FIG. 8, the slider 45 has a rectangular parallelepiped outer shape, and a notch 45a is formed in a part near the front. A through hole 45b is formed in the left-right direction intersecting the notch 45a of the slider 45. A screw hole 45c opening upward is formed in the direction intersecting with the through hole 45b.
As shown in FIG. 8, the rubber grindstone unit 46 as a grinding member includes an attachment base 47 and a rubber grindstone 48. The rubber grindstone 48 is formed in a rectangular parallelepiped shape. A through hole 47 a is formed in the attachment base 47. The mounting base 47 of the rubber grindstone unit 46 is fitted into the notch 45a of the slider 45, the pin 49 is inserted from the front with the through holes 45b and 47a collated, and the pin 49 is inserted at a predetermined advance position by the screw 50. The rubber grindstone unit 46 swings in the vertical direction with the pin 49 as the swing axis (however, it does not swing so much due to the interference of members).

Next, a mechanism for attaching the mechanism unit body 22 to the gantry 21 will be described. A second slide block 51 is fixed to the lower surface of the base plate 35. As shown in FIG. 4, a pair of front and rear bushes 52 are inserted into the second slide block 51, and a second slide shaft 53 is inserted through the bush 52. The second slide shaft 53 is installed between the front and rear bearing blocks 25 formed on the mount 21 so as to be inserted therethrough. The second slide shafts 53 arranged one by one on the left and right are arranged so as to be equidistant from the base surface 21a and parallel to each other in the installed state. On the second slide shaft 53, a coil spring 54 is disposed in a biased state between the bush 52 and the bearing block 25 disposed on the front side, and the mechanism body 22 has a bush 52 (second slide). It is always pressed backward by the coil spring 54 via the block 51).
As can be seen from FIG. 2 to FIG. 4 and the like, the mechanism unit main body 22 (and the rotational force applying unit 23) slides in the front-rear direction in parallel with the base surface 21a of the gantry 21 as a reference.

Next, the rotational force application part 23 of the mechanism part main body 22 is demonstrated. A crank plate 60 is disposed behind the base plate 35 and below the slider frame 39. As shown in FIGS. 6 and 7, a rod 55 is disposed behind the crank plate 60, and a lower end thereof is rotatably connected to the outer periphery of the crank plate 60. The upper end of the rod 55 is rotatably connected to the rear (back) of the slider 45. A shaft 61 extending rearward is connected to the center of the back surface of the crank plate 60. The shaft 61 is inserted through the bearing block 62, extends outward from below the push rod support frame 26, and is connected to the handle 63. In such a configuration, when the handle 63 is rotated, the crank plate 60 rotates together, and the rod 55 pushes and pulls the slider 45 up and down as the crank plate 60 is displaced.
As shown in FIGS. 3, 4, and 12, the bearing block 62 is suspended and supported by a support plate 64 disposed between the left and right side plates 36. An abutment block 65 with which the tip of the push rod 31 abuts is fixed to the upper portion of the support plate 64. That is, as the push rod 31 advances, the abutment block 65 is pushed and the entire mechanism unit body 22 moves forward. On the other hand, when the push rod 31 moves backward, the entire mechanism unit main body 22 moves rearward due to the pressing force when the biased coil spring 54 returns. Since the mechanism body 22 is attached to the gantry 21 so as to be inclined backward, if the push rod 31 is retracted, the entire mechanism body 22 is naturally retracted without the coil spring 54. Depending on the configuration, it can be retracted more reliably.

Next, the support mechanism 16 will be described.
As shown in FIGS. 1 and 2, a circular through hole 70 is formed in the top plate 3 on the first storage area 11 side, and a rotary block unit 71 is formed in the through hole 70. It is mated. The rotating block unit 71 includes a flange portion 72 that surrounds the periphery of the through hole 70, and a ring-shaped rotating body 74 that is rotatable with respect to the flange portion 72 by a rolling bearing 73. The inner periphery of the rotating body 74 is a circular opening 77 that communicates with the first storage area 11. A small flange 75 projecting inward is formed on the inner peripheral lower edge of the rotating body 74. A pair of stopper accommodating portions 74 a are formed at positions facing the inner circumference and facing the opening 77 of the rotating body 74 at 180 degrees. Further, a press frame accommodating portion 74b is formed at a position orthogonal to the stopper accommodating portion 74a.
A press piece unit 76 is disposed in the press piece accommodating portion 74b. As shown in FIG. 9, the press piece unit 76 is composed of an outer piece 78 arranged on the outer side and an inner piece 79 arranged on the inner side. Both contact surfaces are tapered surfaces and are pushed by the outer piece 78 as the outer piece 78 is lowered, so that the inner piece 79 moves in the direction of the opening 77. A coil spring 80 is disposed on the lower surface of the outer piece 78, and the outer piece 78 is disposed in a state where the coil spring 80 is urged from above by a screw 81. Since the vertical position of the outer piece 78 can be adjusted by adjusting the advancement amount of the screw 81, the inner piece 79 can be moved inward by a predetermined amount of movement by rotating the screw 81. .
The motor 14 is suspended and fixed to the top plate 3 on the second storage area 12 side. A rotation shaft 14 a of the motor 14 is projected from a through hole 70 formed in the top plate 3 to an upper position of the top plate 3. A synthetic rubber V-belt 83 is wound between the outer periphery of the pulley 82 attached to the rotating shaft 14 a of the motor 14 and the outer periphery of the rotating body 74. The support mechanism 16 having such a configuration is covered with a protective cover 85 so that only the rotating body 74 of the rotating block unit 71 is exposed.
In the support mechanism 16 having such a configuration, the driving of the motor 14 from the rotating shaft 14 a is transmitted to the rotating body 74 by the V belt 83, and only the rotating body 74 rotates in the rotating block unit 71.

Here, the relationship between the rotating body 74 and the tool holder W fitted here will be described. The tool holder W includes a tapered shank S that is fitted into a sleeve on the main shaft side, and a holder body B that holds the tool. In the present embodiment, the holder main body B having a large diameter with respect to the shank S is received by the small flange 75 formed on the inner periphery of the rotating body 74, and the shank S is exposed in the first storage area 11. In this configuration, the outer periphery of the shank S that rotates together with the rotating body 74 is ground by contacting the rubber grindstone 48 from the side. In order to uniformly grind the outer periphery of the shank S, the center axis of the tool holder W needs to coincide with the rotation center of the rotating body 74. However, in that case, if the inner diameter of the rotating body 74 and the outer diameter of the holder main body B completely coincide with each other, the holder main body B interferes with the periphery of the opening 77 of the rotating body 74 and the tool holder W is used as the rotating body in the first place. 74 cannot be set. Therefore, the inner diameter of the opening 77 of the rotator 74 must be larger than the outer diameter of the holder body B. In this case, if the tool holder W is set in the rotator 74, a gap is generated between them. The center axis of W does not coincide with the rotation center of the rotating body 74.
Therefore, the following configuration is adopted in the present embodiment.
As shown in FIG. 11 (a), a region 77A (160 ° / 360 ° in the present embodiment) in which the inner peripheral diameter of the opening 77 of the rotating body 74 is the same as that of the holder main body B is slightly larger than the holder main body B. The enlarged region (200 ° / 360 ° in the present embodiment) is 77B. That is, two circular arcs having different diameters are joined to form the inner periphery of the opening 77 of the rotating body 74. Then, the press top accommodating portion 74b is formed at the center position in the circumferential direction on the region 77B side, and the press top unit 76 is disposed.
An inner broken line p shown in FIG. 11 (b) is a line obtained by extending the inner peripheral diameter of the region 77A, and the center axis of the tool holder W is the rotation center of the rotating body 74 by arranging the holder main body B at this position. Will match. That is, the holder body B of the tool holder W loosely fitted in the opening 77 of the rotating body 74 in the state shown in FIG. It is arranged at the position of. FIG. 11C shows a state in which the tool holder W is moved by operating the press piece unit 76 and adjusted so that the center axis of the tool holder W coincides with the rotation center of the rotating body 74. Since the tool holder W used in the present embodiment has a concave portion C formed at a position opposed to 180 °, the tool holder W is accommodated in the stopper accommodating portion 74a to accommodate the stopper 86 with respect to the rotating body 74. Relative rotation can be prevented.

Next, the grinding method of the tool holder W by the shank grinding apparatus 1 comprised in this way is demonstrated.
In the initial state, the push rod 31 is in the retracted position shown in FIG. 10A, and the mechanism main body 22 and the rotational force applying part 23 of the grinding mechanism 13 are in the most retracted position on the gantry 21 (state in FIG. 3). is there. In this state, the operator opens the case 18 on the top plate 3 and inserts the tool holder W into the rotating body 74 of the rotating block unit 71 with the shank S facing downward. The tool holder W is supported by the small flange 75 of the rotating body 74 and the shank S is exposed in the first storage area 11. Then, the press piece unit 76 is operated as described above so that the center axis of the tool holder W coincides with the rotation center of the rotating body 74. Then, the case 18 is closed again.
As shown in FIG. 3, in the present embodiment, the angle of the taper of the shank S with respect to the axial direction (vertical direction) and the angle of the base surface 21a of the gantry 21 with respect to the horizontal direction are set to coincide. Therefore, the angle with respect to the vertical direction of the longitudinal direction of the rubber grindstone 48 and the angle with respect to the axial direction of the taper of the shank S coincide. In this state, the push rod 31 is set to the advanced position shown in FIG. Then, the mechanism unit main body 22 and the rotational force applying unit 23 move forward, and the rubber grindstone 48 contacts the shank S as shown in FIG. Note that the pressing force of the rubber grindstone 48 that contacts the shank S at this time can be adjusted by replacing the coil spring 43 disposed on the slider frame 39. Next, the operator turns the main switch 9 to a power-on state (this power-on operation may be prior to this). The operator presses the energization switch 24 to drive the motor 14, thereby rotating the rotating body 74 of the rotating block unit 71 and rotating (spinning) the tool holder W together with the rotating body 74. In the present embodiment, the motor 14 is driven by energization only while the energization switch 24 is pressed. When the operator rotates the handle 63 in synchronization with the pushing of the energizing switch 24, the rubber grindstone 48 repeats the up and down movement while being in close contact with the outer periphery of the shank S of the tool holder W, and the shank S moves in its circumferential direction. The entire circumference of the shank S is uniformly ground by this rotation and the vertical movement of the rubber grindstone 48. The operator can always check the situation where the shank S is ground from the window 7.

The shank grinding apparatus 1 configured as described above has the following effects.
(1) The conventional manual rust removal had a problem that the surface of the shank S, which should have been smooth due to excessive grinding, was slightly uneven. Grinding by rotating the tool holder W like this If this method is used, grinding is performed uniformly, so there is no such problem. Further, since the grinding efficiency can be changed by changing the type and shape of the rubber grindstone 48 and the shape and strength of the coil spring 43, an optimum grinding system can be constructed.
(2) Since grinding only removes rust on the surface, it does not take much time. However, since the appearance of rust is not always uniform, it is inconvenient to keep the grinding time constant. In this respect, if the tool holder W can be rotated only while the energization switch 24 is being pressed, the operator can stop the rotation once and check the grinding condition, thereby realizing the optimum rust removal without excessive grinding. it can.
(3) Since the angle at which the rubber grindstone 48 contacts and separates from the shank S is set to correspond to the taper angle of the shank S, the pressure of the rubber grindstone 48 that contacts the shank S does not vary greatly depending on the grinding position. Contributes to uniform grinding.
(4) Since the rubber body 48 is brought into contact with the shank S of the tool holder W set by moving the entire mechanism unit body 22 back to the retracted position and then moving forward, the setting of the tool holder W is set. The pressing force from the lateral direction does not act in the work. Therefore, the setting work of the tool holder W can be performed quickly and without any trouble.
(5) By simply rotating the handle 63, the rubber grindstone 48 repeats up and down movement accurately in close contact with the outer periphery of the shank S of the tool holder W, so that the surface of the shank S can be stably ground over a wide range. It is possible.

The present invention may be embodied in the following manner.
-The shank grinding apparatus 1 of the said embodiment is an example, Comprising: It is also possible to implement with another form. For example, in the above description, the rubber grindstone 48 is approached from the side to the tool holder W suspended from above. However, the tool holder W only needs to be supported rotatably other than from above. The contact / separation direction of the rubber grindstone 48 may also be a direction other than the above. For example, although the center axis of the tool holder W is arranged in the vertical direction in the above embodiment, it may be arranged in the horizontal direction.
In the above embodiment, the inclination of the gantry 21 is constant in order to correspond to the angle of the shank S that is known in advance. However, the inclination of the gantry 21 is changed so that it can correspond to various angles of the shank S. You may be able to do it. For example, as shown in FIG. 13, the table 91 is provided with a hinge portion 90a on the gantry 90, and the side that supports the rubber grindstone unit 92 can be rotated around the hinge portion 90a to be inclined. You may comprise so that an angle may be changed. In FIG. 13A, the table 91 is arranged horizontally by disposing the first spacer 93 below the table 91. However, as shown in FIG. By arranging a certain spacer (second spacer 94), it is possible to set the table 91 at an angle corresponding to the second spacer 94. A screw rod 96 having a dial 95 is disposed on the gantry 90, and a link (rod) 98 is disposed between the screw rod 96 and the table 91. As shown in FIG. 14, the link 98 is a member constituted by two pins 97a and 97b, and a table 91 and a large pin 97b on the small pin 97a side.
It is connected to the gantry 90 on the side. A screw rod 96 is engaged with the large pin 97b, and a screw pair is formed between them.
In such a configuration, when the dial 95 is rotated to rotate the screw rod 96, the pin 97 moves in the axial direction of the screw rod 96 along with the operation, so that the table pushed by the link 98 is moved. 91 can be erected. For example, when the second spacer 94 is disposed below the table 91 as shown in FIG. 13B, the screw rod 96 is rotated until the distance between the second spacers 94 is reached. The table 91 is erected and a second spacer 94 is provided. As a result, the table 91 is held at a predetermined angle by the functions of both the second spacer 94 and the screw rod 96.
-There may be a plurality of grinding members (rubber grindstones 48). That is, you may make it grind the shank S simultaneously from a different direction.
In the above description, the manual handle 63 is used as the actuating means. However, this may be automated such that the motor is turned on and off with a switch.
When the cylindrical shank S is ground, the gantry 21 does not need to be tilted.
The driving means for the rotating body 74 may be other than the motor 14. Further, means other than the V belt 83 may be used as means for transmitting the drive to the rotating body 74. For example, a timing belt may be used, or the drive may be transmitted by a gear mechanism instead of a belt.
In the above description, the coil spring 43 is used as the urging means, but a leaf spring, an air cylinder, or a hydraulic cylinder can also be used.
In addition, the present invention can be freely implemented in a modified form without departing from the spirit of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Shank grinding apparatus, 14 ... Motor as drive provision means, 31 ... Push rod as actuating means, 39 ... Slider frame as grinding member holding means, 42 ... Slider guide shaft as grinding member holding means, 45 ... Slider as grinding member holding means, 48 ... Rubber wheel as grinding member, 60 ... Crank plate as operating means, 63 ... Handle as operating means, 66 ... Rotary block unit as supporting means, W ... Tool holder, S ... Shank.

Claims (7)

A support means for supporting a rotating workpiece rotatably around an axis;
Drive applying means for rotating the work supported by the support means;
Processing means for processing the workpiece,
The supporting means includes a rotating body that surrounds the outer periphery of the work and rotates together with the work, and a pressing member disposed on the rotating body, and the rotating body is an inner peripheral portion of a plurality of arcs having different diameters. When the workpiece is loosely fitted in the rotating body and the pressing member is displaced in the direction of the rotating body, the workpiece in the loosely fitting state is applied to the inner peripheral portions on the small diameter side of the plurality of arcs. is contact, the processing device of a work, characterized in that the so that to match the rotation center of the central shaft and the rotating body of the workpiece. Processing device of a work according to claim 1 diameter of the contact surface of the workpiece is characterized that you have been configured to the small diameter side and the same diameter of the plurality of arcs. The work processing apparatus according to claim 1 , wherein means for preventing relative rotation of the two is provided between the rotating body and the work . Grinding member holding means for holding the grinding member in contact with the outer periphery of the workpiece ;
Processing device of a work according to any one of claims 1 to 3, wherein Rukoto a actuating means for reciprocating the grinding member in a direction crossing the circumferential direction of the workpiece. The grinding member machining device of a work according to claim 4, characterized in Rukoto that Sessu with a predetermined urging force by the urging means against the outer periphery of the workpiece. Processing device of a work according to claim 5 predetermined urging force applied by said biasing means, characterized in changeable der Rukoto. The workpiece machining device of a work according to any one of claims 1 to 6 are supported suspended by the support means disposed on the ceiling portion of the housing, characterized in Rukoto.

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