Processing tool

Abstract

To provide a processing tool simply configured so that a pusher can be detachably attached thereto and an advancing / retreating spring can be replaced from a direction of a tip thereof.SOLUTION: A processing tool 10 comprises: a body 13 having a cylinder chamber 13f having an opening in a direction of a tip and a slide groove 13j extending along the cylinder chamber 13f; a tool 25 attachably and detachably inserted into the cylinder chamber 13f and having a baffle groove 25b at an outer periphery thereof; a baffle 15, arranged in the body 13, which advances and retreats into and from the cylinder chamber 13f; a pusher 30, arranged to be able to advance into and retreat from the cylinder chamber 13f, which energizes the tool 25 toward a direction of the tip and has a pusher body 32, a retaining body 39 that is inserted into a slide groove 13j and an opening / closing elastic body 37 that energizes the retaining body 39 to outside in a radial direction; and an advancing / retreating elastic body 17 arranged at a base end side of the pusher 30, in the cylinder chamber 13f.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a processing tool. [Background technology]

[0002] Conventionally, a deburring tool capable of adjusting the pressing force of a cutting tool against a workpiece has been proposed (for example, Patent No. 7260612). The conventional deburring tool includes a shank, a cylinder chamber, a body having a rotation prevention body holding hole and a tool holder holding hole, a pusher, an elastic body for biasing the pusher in the tip direction, a tool holder having a rotation prevention groove and a tool holding hole, a cover arranged on the outside of the body and capable of reciprocating between an attachment / detachment position and a processing position along the shank axis, the cover having a pressing surface covering the rotation prevention body holding hole at the processing position and a relief portion, and a rotation prevention body accommodated in the relief portion when the cover is located at the attachment / detachment position and the tool holder is pulled out of the tool holder holding hole. Summary of the Invention [Problem to be solved by the invention]

[0003] In general, it is preferable to change the elastic body that biases the pusher toward the tip depending on the material of the workpiece and the chamfer width. Also, there are cases where the elastic body needs to be replaced depending on the end of its life. Here, if the elastic body cannot be replaced from the tip direction of the deburring tool, the deburring tool needs to be disassembled, which is time-consuming for the user.

[0004] An object of the present invention is to provide a processing tool having a simple structure, in which a pusher can be detached and an advance / retract spring can be replaced from the tip direction. [Means for solving the problem]

[0005] The first aspect of the present invention is A body, a cylinder chamber having an opening in a tip direction and extending along the body; a slide groove extending along the cylinder chamber; a body having a tool that is detachably inserted into the cylinder chamber and has an anti-rotation groove on an outer periphery; A rotation stopper is disposed in the body and moves forward and backward into the cylinder chamber; A pusher is disposed inside the cylinder chamber so as to be movable forward and backward, and biases the tool toward a tip end thereof, A pusher body; a retaining body that protrudes radially from the pusher body and is inserted into the slide groove; An opening / closing elastic body that biases the retaining body radially outward; a pusher having a reciprocating elastic body disposed on a base end side of the pusher in the cylinder chamber; It is a processing tool having the following features.

[0006] The processing tool is, for example, a deburring tool, a drilling tool, a threading tool, or a brush tool. The deburring tool is attached to a processing machine and removes burrs attached to the workpiece. The processing machine is, for example, a lathe, a turning center, or a robot. For convenience of explanation, the side to which the tool bit is attached is called the tip side, and the opposite side is called the base side.

[0007] The tool may include a floater and a tool tip. The anti-rotation groove is disposed in the floater. The tool tip may be, for example, a rotary bar or a brush.

[0008] The receiving portion is a receiving groove or a receiving hole. The receiving portion extends in a radial direction. The receiving groove is disposed on a tip surface of the slider. The lever is disposed on the retaining body or the opening / closing elastic body. The lever is exposed on the tip side of the pusher. The lever being operated includes being moved radially inward. Effect of the Invention

[0009] According to the processing tool of the present invention, the pusher can be detached and the advance / retract spring can be replaced from the tip end direction with a simple structure. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a vertical cross-sectional view of a processing tool according to a first embodiment; [Diagram 2] Enlarged cross section of line II-II in Figure 1 [Diagram 3] Enlarged view of part III in Fig. 1 [Figure 4] FIG. 1 is a perspective view of a pusher according to a first embodiment; [Diagram 5] FIG. 1 is a vertical cross-sectional view of a pusher when a lever is operated according to the first embodiment; [Figure 6] Vertical cross-sectional view of embodiment 2 [Figure 7] Cross-sectional view of line VII-VII in Figure 6 [Figure 8] Enlarged view of part VIII in Figure 6 [Figure 9] FIG. 11 is a perspective view of a pusher according to a second embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] (Embodiment 1) As shown in Fig. 1, the processing tool 10 of this embodiment has a body 13, a ball (rotation prevention body) 15, a trigger 21, a trigger spring 23, a tool 25, an advance / retract spring 17, and a pusher 30. The processing tool 10 is attached to, for example, a spindle of a machining center, and rotates around a central axis 1. Fig. 1 is a cross-sectional view taken along line II in Fig. 2.

[0012] The body 13 has a shank 13a, a body block 13b, a ball hole (anti-rotation retaining hole) 13g, a cylinder body 13c, a cylinder chamber 13f, a pair of slide grooves 13j, a stopper 13d, an advance / retreat spring chamber 13k, and a first trigger spring chamber 13h. The shank 13a is connected to a base end of the body block 13b. The body block 13b is hollow cylindrical. The cylinder body 13c is hollow cylindrical and disposed inside the body block 13b. The ball hole 13g is disposed in the center of the cylinder body 13c. As shown in FIG. 2, the ball hole 13g is inclined from the radial direction in the cross section and penetrates the cylinder body 13c. The radially inner tip of the ball hole 13g has a spherical portion 13n.

[0013] Cylinder chamber 13f opens at the tip of cylinder body 13c and extends along central axis 1. Slide groove 13j extends along central axis 1 on the cylindrical side surface of cylinder chamber 13f. The pair of slide grooves 13j are arranged symmetrically about central axis 1. Stopper 13d is arranged at the tip of cylinder body 13c. The forward / backward spring chamber 13k is disposed on the base end side of the cylinder chamber 13f and is connected to the cylinder chamber 13f. The first trigger spring chamber 13h is disposed inside the body block 13b and outside the cylinder body 13c. The first trigger spring chamber 13h opens to the tip end of the body block 13b. The slide groove 13j may penetrate the cylinder body 13c in the radial direction.

[0014] The ball 15 is disposed inside the ball hole 13g. The ball 15 contacts the spherical portion 13n. The ball 15 can protrude into the cylinder chamber 13f.

[0015] The trigger 21 is hollow cylindrical and disposed radially outward of the cylinder body 13c. The trigger 21 reciprocates along the central axis 1. The trigger 21 has a recess 21a, a pressing surface 21b, and a second trigger spring chamber 21c. The pressing surface 21b is an inner cylindrical surface of the trigger 21 and slides on the outer surface of the cylinder body 13c. The pressing surface 21b pushes the ball 15 radially inward when the trigger 21 is located at the distal end. The recess 21a is an annular groove disposed at the distal end of the pressing surface 21b. The trigger 21 can move in the proximal direction. The second trigger spring chamber 21c is disposed at the proximal end of the trigger 21. The second trigger spring chamber 21c is connected to the first trigger spring chamber 13h.

[0016] When the trigger 21 moves toward the base end, the recess 21a overlaps with the ball hole 13g. At this time, the ball 15 moves radially outward and is housed in the recess 21a. Then, when the ball 15 is completely removed from the cylinder chamber 13f, the tool 25 can be attached to and detached from the cylinder chamber 13f. The trigger spring 23 is, for example, a compression coil spring. The trigger spring 23 is disposed between the second trigger spring chamber 21c and the first trigger spring chamber 13h. The trigger spring 23 biases the trigger 21 in the distal direction.

[0017] The pusher 30 is disposed in the cylinder chamber 13f. The advance / retract spring 17 is, for example, a compression coil spring. The advance / retract spring 17 is disposed between the advance / retract spring chamber 13k and the pusher 30, and biases the pusher 30 in the distal end direction.

[0018] The tool 25 has a floater 25a, a tool tip 25c, and a lever storage hole 25d. The floater 25a has a pair of anti-rotation grooves 25b. The floater 25a is cylindrical and moves forward and backward along the central axis 1 inside the cylinder chamber 13f. The pair of anti-rotation grooves 25b are arranged symmetrically with respect to the central axis 1 and extend in the direction of the central axis 1. The tool tip 25c is attached to the floater 25a by, for example, a collet. The lever storage hole 25d is arranged at the base end of the floater 25a. The lever storage hole 25d stores a lever 37b (described later). The tool tip 25c and the floater 25a may be formed integrally. The tool 25 is inserted into the cylinder chamber 13f. The ball 15 is inserted into the anti-rotation groove 25b. The pusher 30 biases the tool 25.

[0019] 3 and 4, the pusher 30 has a pusher body 32, a leaf spring (opening / closing elastic body) 37, and a pair of stoppers (retaining bodies) 39. The pusher body 32 has a slider 31, a pair of forward / backward spring guides 33, and a support pin (elastic body support body) 35.

[0020] The slider 31 is disk-shaped and moves back and forth in the cylinder chamber 13f. The slider 31 has a spring chamber 31a and a receiving groove (receiving portion) 31b. The spring chamber 31a is disposed in the center of the slider 31 and is a through hole extending in the axial direction. The spring chamber 31a has an elliptical or rectangular cross section (see FIG. 4). The receiving groove 31b is disposed on the tip surface of the slider 31 and is a groove extending in the radial direction. The receiving groove 31b has a U-shaped cross section. The receiving groove 31b penetrates from the outer periphery of the slider 31 to the spring chamber 31a.

[0021] The advance / retract spring guide 33 extends in the base end direction of the slider 31. The advance / retract spring guide 33 is disposed at both ends of the spring chamber 31a and extends along the central axis 1. The advance / retract spring guide 33 has a through hole 33a. The advance / retract spring guide 33 has a cylindrical surface and a side surface constituted by a flat surface, and has a crescent-shaped cross section. The cylindrical surfaces of each of the pair of advance / retract spring guides 33 are the same cylindrical surface. The through hole 33a is disposed at the tip end of each of the advance / retract spring guides 33. The advance / retract spring guide 33 guides the advance / retract spring 17. The support pin 35 passes through the pair of through holes 33a.

[0022] The stopper 39 has a protrusion 39a and a retaining groove 39b. Each stopper 39 extends radially and is disposed in each receiving groove 31b. The stopper 39 has a right cylindrical shape. The protrusion 39a protrudes from the side surface of the slider 31. The protrusion 39a is inserted into the slide groove 13j. The inner end of the stopper 39 protrudes into the spring chamber 31a. The retaining groove 39b is a circumferential groove and is disposed at the inner end of the stopper 39. When the pusher 30 advances or retreats within the cylinder chamber 13f, the stoppers 39 come into contact with both ends of the slide groove 13j, thereby determining the stroke of the pusher 30.

[0023] The leaf spring 37 has a hook portion 37a and a lever 37b. The leaf spring 37 is bent in a U-shape. The center of the leaf spring 37 is supported by the support pin 35. Both ends of the leaf spring 37 penetrate the spring chamber 31a and protrude from the tip surface of the slider 31. The hook portion 37a is disposed at both ends (tip portions) of the leaf spring. The hook portion 37a is a notch formed in the leaf spring 37. The hook portion 37a engages with a stop groove 39b. The lever 37b is at both ends of the leaf spring 37 and protrudes from the slider 31. The lever 37b may be inclined radially outward as it moves away from the slider 31. The leaf spring 37 biases the stopper 39 radially outward. The lever 37b may be disposed on a stopper 39 instead of the leaf spring 37.

[0024] As shown in Fig. 5, when an operator moves the pair of levers 37b radially inward, the leaf spring 37 closes and the stopper 39 moves radially inward. At this time, the leaf spring 37 deforms, causing the stopper 39 to tilt and the protruding portion 39a to rise toward the tip. Then, the protruding portion 39a comes out of the slide groove 13j. This allows the operator to remove the pusher 30 from the cylinder chamber 13f toward the tip and replace the forward / backward spring 17.

[0025] (Embodiment 2) As shown in Fig. 6, the processing tool 100 of this embodiment has a cover 111, a motor 129, a bearing 112, a body 113, a reciprocating spring 17, a pusher 130, a ball 15, a trigger 121, a trigger spring 23, and a tool 25. Fig. 6 is a cross-sectional view taken along line VI-VI in Fig. 7.

[0026] The cover 111 is hollow cylindrical and extends along the central axis 1. The cover 111 has an air inlet 111a and an air outlet 111b. The air inlet 111a is disposed at the base end of the cover 111. The air inlet 111a is connected to an air source 141a. The air outlet 111b is disposed at the tip of the cover 111. The air outlet 111b is connected to the air inlet 111a.

[0027] The motor 129 is disposed at the base end of the cover 111. The motor 129 is, for example, an electric motor or an air motor. If the motor 129 is an air motor, the motor 129 may be connected to the air inlet 111a or the air outlet 111b.

[0028] The body 113 is supported inside the cover 111 via the bearing 112. The body 113 has a serrated hole 113m. The serrated hole 113m is disposed at the base end of the body 113. The serrated hole 113m is connected to the motor 129. Other configurations of the body 113 are substantially the same as those of the body 13 of the first embodiment. The trigger 121 is substantially the same as the trigger 21 of the first embodiment, except for the shape.

[0029] As shown in FIGS. 8 and 9, the pusher 130 has a pusher body 132, a torsion coil spring (opening / closing elastic body) 137, and a pair of plungers (stopping bodies) 139.

[0030] The pusher body 132 has a slider 131, an advance / retract spring guide 133, and a support pin 35. The slider 131 has a spring chamber 131a and a pair of receiving holes (receiving portions) 131b. The spring chamber 131a is substantially the same as the spring chamber 31a in the first embodiment. The receiving holes 131b extend radially and penetrate from the side surface of the slider 131 to the spring chamber 131a. The receiving holes 131b are cylindrical holes. The advance / retract spring guide 133 is substantially the same as the advance / retract spring guide 33 in the first embodiment. The pusher body 132 may have the receiving groove 31b of the first embodiment instead of the receiving hole 131b.

[0031] The plunger 139 is cylindrical. The plunger 139 has a protrusion 139a and a stop hole 139b. The pair of plungers 139 are inserted into the receiving holes 131b, respectively, and guided into the receiving holes 131b. The protrusion 139a protrudes from the cylindrical side surface of the slider 31. The protrusion 139a is inserted into the slide groove 13j. The radially inner end of the plunger 139 protrudes into the spring chamber 131a. The stop hole 139b is disposed at the base end of the plunger 139 and passes through the plunger 139.

[0032] The torsion coil spring 137 has a coil portion 137a, a terminal portion 137d, and a lever 137b. The coil portion 137a is supported by the support pin 35. The terminal portion 137d extends toward the tip, passes through the spring chamber 131a, and protrudes from the tip of the slider 131. The terminal portion 137d passes through a stop hole 139b. The tip portions (both ends) of the terminal portion 137d become the lever 137b. The lever 137b may be bent toward the outside in the radial direction. The torsion coil spring 137 biases the plunger 139 toward the outside in the radial direction.

[0033] When the operator pinches the lever 137b, the torsion coil spring 137 contracts, and the plunger 139 is housed in the receiving hole 131b. Then, the plunger 139 is released from the slide groove 13j, and the operator can remove the pusher 130 from the cylinder chamber 13f in the forward direction. Then, the operator can replace the forward / backward spring 17.

[0034] The pusher 30 of the first embodiment and the pusher 130 of the second embodiment may be interchanged.

[0035] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the present invention, and all technical matters included in the technical ideas described in the claims are the subject of the present invention. The above-described embodiment shows a preferred example, but a person skilled in the art can realize various alternatives, modifications, variations, or improvements from the contents disclosed in this specification, and these are included in the technical scope described in the attached claims. [Explanation of symbols]

[0036] 10, 100 Processing tools 13, 113 Cover 13f Slide groove 13f Cylinder chamber 25 Tools 25b Anti-rotation groove 30, 130 Pusher 32, 132 Pusher body 39 Stopper (anti-slip body) 139 Plunger (stopper)

Claims

1. A body, a cylinder chamber having an opening in a tip direction and extending along the body; a slide groove extending along the cylinder chamber; a body having a tool that is detachably inserted into the cylinder chamber and has an anti-rotation groove on an outer periphery; A rotation stopper is disposed in the body and moves forward and backward into the cylinder chamber; A pusher is disposed inside the cylinder chamber so as to be movable forward and backward, and biases the tool toward a tip end thereof, A pusher body; a retaining body that protrudes radially from the pusher body and is inserted into the slide groove; An opening / closing elastic body that biases the retaining body radially outward; a pusher having a reciprocating elastic body disposed on a base end side of the pusher in the cylinder chamber; A processing tool having

2. The pusher has a lever disposed at a tip of the pusher, When the lever is operated, the retaining body moves radially inward, and the pusher and the retractable elastic body can be removed toward the tip end of the cylinder chamber. The processing tool of claim 1 .

3. The pusher body includes: a radially extending receiver; a spring chamber disposed in a central portion of the pusher body, connected to the receiving portion, and extending in a radial direction; An elastic support; having The opening / closing elastic body is supported by the elastic body support, disposed in the spring chamber, and connected to the retaining body.

3. The processing tool according to claim 1 or 2.

4. The tool is disposed at a base end of the tool and has a lever receiving hole for receiving the lever. The processing tool according to any one of claims 1 to 3.

5. The receiving portion is a receiving groove disposed on a tip surface of the pusher body. The processing tool according to any one of claims 1 to 4.

6. The opening and closing elastic body is The levers are disposed at both ends, A hook portion and A U-shaped leaf spring having The retaining body is disposed radially inward and has a retaining groove that engages with the hook portion. The processing tool according to any one of claims 1 to 5.

7. The receiving portion is a receiving hole disposed in the pusher body, The opening and closing elastic body is A coil portion supported by the elastic support body; A terminal portion having the lever; The processing tool of claim 3 , comprising:

8. The vehicle further includes a cover that rotatably supports the body. The processing tool according to any one of claims 1 to 7.

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