JP2016034648A - Swing cut type chamfering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chamfering device capable of further efficiently, inexpensively, and precisely carrying out chamfering.SOLUTION: A swing cut type chamfering device includes: an elevating device which supports a chamfering punch unit 5 having a punch member 9 equipped with a blade portion at a tip end; and a fixed base on which material A to be chamfered is fixed. A tip edge portion of the punch member 9 is formed in a tapered shape. The tip edge portion of the punch member 9 and an edge corner portion of the material A to be chamfered are disposed to be offset so as to be partially superimposed in an upper surface view. During the lowering of the elevating device, the chamfering punch unit 5 is guided by the tip edge portion formed in the tapered shape of the punch member 9 while scraping off the edge corner portion of the material to be chamfered with the blade portion formed at the tip end portion of the punch member 9, and rotated to the outside of the material A to be chamfered.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a swing cut type chamfering apparatus for chamfering a ridge corner of an arbitrary material using a punch member.

Conventionally, chamfering is performed on the ridge corners of machine parts in order to avoid interference caused by hitting with other parts, to remove burrs generated during pressing, or to increase the strength of corners. Things have been done.
There are various chamfering methods, for example, a method of polishing the ridge corner with a polishing apparatus and a method of cutting the ridge corner with a laser.

  An object of the present invention is to provide a chamfering apparatus that can perform chamfering more efficiently, inexpensively and accurately by a method different from the conventional chamfering method described above.

  In order to achieve the above-described object, a swing-cut type chamfering apparatus according to the present invention includes an elevating device that supports a chamfering punch unit having a punch member having a blade portion at a tip, and a lower portion of the elevating device. And the fixing device for fixing the material to be chamfered, the chamfering punch unit being rotatable in a direction perpendicular to the ridgeline of the ridge corner of the material to be chamfered The tip edge of the punch member in the chamfering punch unit is tapered so as to become thinner toward the tip, and the edge of the material to be chamfered with the tip edge of the punch member And the chamfering punch unit is arranged offset with respect to the material to be chamfered so as to be partially chamfered and viewed from the upper surface when the lifting device is lowered. Take The nipping unit is guided by the tip edge of the punch member in a tapered shape while scraping off the ridge corner of the material to be chamfered by the blade formed at the tip of the punch member. It is configured to rotate outside the material to be processed.

  A swing-cut type chamfering apparatus according to the present invention should be chamfered by a lifting device that supports a chamfering punch unit having a punch member having a blade portion at a tip, and a lower device disposed on the lifting device. A chamfering punch unit supported by the elevating device so as to be rotatable in a direction orthogonal to a ridgeline of a ridge corner of the material to be chamfered. The front end edge of the punch member in the unit is tapered so as to become thinner toward the front end, and the front end edge of the punch member and the ridge corner of the material to be chamfered partially overlap each other when viewed from above. Further, the chamfering punch unit is arranged to be offset to the outside in a top view with respect to the material to be chamfered, and the chamfering punch unit is disposed on the punch member while the elevating device is lowered. While cutting off the ridge corner of the material to be chamfered with the blade formed at the end, it is guided to the tip edge formed in the taper shape of the punch member, and outside the material to be chamfered. Since it is configured to rotate, it becomes possible to chamfer the ridge corners of the material to be chamfered easily and accurately. Further, the swing cut type chamfering apparatus according to the present invention cuts off the ridge corner of the material to be chamfered by the vertical movement of the chamfering punch unit, so that the ridge corner to be chamfered is, for example, the inside Even if it is a narrow corner like a curved shape that is recessed, it is possible to perform chamfering only by adapting the size of the punch member.

1 is a schematic top view of a chamfering apparatus according to the present invention. It is a schematic front view of the chamfering apparatus shown in FIG. It is a schematic right view of the chamfering processing apparatus shown in FIG. It is an expanded sectional view of punch unit 5 for chamfering. It is an assembly drawing of the punch unit 5 for chamfering. (A) And (b) is a top view of the through-hole 8a of the lower body 8, and the flange 9a of the punch member 9. FIG. It is an enlarged view of the front-end | tip part of a punch member. It is a top view of the material A which should be processed by the chamfering apparatus. It is a figure which shows the effect | action of a punch member.

Hereinafter, an embodiment of a swing cut type chamfering apparatus (hereinafter referred to as a chamfering apparatus) according to the present invention will be described with reference to an embodiment shown in the accompanying drawings.
1 is a schematic top view of a chamfering apparatus according to the present invention, FIG. 2 is a schematic front view of the chamfering apparatus shown in FIG. 1, and FIG. 3 is a schematic right side of the chamfering apparatus shown in FIG. Each figure is shown.
As shown in the drawing, this chamfering apparatus has a fixing base 1 for fixing a material A to be processed, and an elevating device 2 arranged above the fixing base 1.
The lifting / lowering device 2 has a main body portion 3 having a convex downward cross section. The main body 3 includes a plate-like base 3a and a rectangular parallelepiped protrusion 3b that protrudes downward from the base 3a. A swing cut unit 4 is provided on each of the left and right sides of the protrusion 3b.
The swing cut unit 4 includes a chamfering punch unit 5 and a support member 6 that rotatably supports the chamfering punch unit 5, and the support member 6 is fixed to the base 3 a of the main body portion 3. The
FIG. 4 is a developed cross-sectional view of the chamfering punch unit 5, and FIG. 5 is an assembly view of the chamfering punch unit 5. As shown in the drawing, the chamfering punch unit 5 includes an upper body 7 and a lower body 8.
The lower body 8 is formed with a stepped through hole 8a into which the punch member 9 can be inserted. The punch member 9 is provided with a flange 9a projecting radially outward at the upper end of the cylindrical main body. When the punch member 9 is inserted into the through hole 8a, the flange 9a is locked to the step portion of the through hole 8a (see FIG. See 5a).
6A and 6B show top views of the through hole 8a of the lower body 8 and the flange 9a of the punch member 9, respectively. As shown in the drawing, a pair of key grooves 8b are formed in the through hole 8a of the lower body 8, and a linear portion 9b is formed on the outer periphery of the flange 9a of the punch member 9 every 90 degrees. As a result, the punch member 9 is inserted into the lower body 8, and the pin member 10 is disposed in the key groove 8b with the straight portion 9b aligned with the key groove 8b, whereby the punch member 9 is prevented from rotating (FIG. 5b). Thus, since the linear part 9b is formed in every 90 degree | times on the outer periphery of the flange 9a of the punch member 9, the punch 9 can be rotated 90 degree | times and can be set again as needed.
As shown in FIG. 7, the outer periphery of the tip end of the punch member 9 is formed in a tapered shape so that the diameter is reduced at an angle of about 45 degrees, and a dent rising at an angle of about 35 degrees is formed on the inner side. Yes. As a result, a blade having an angle of about 80 degrees is formed at the tip of the punch member 9.
The upper body 7 is formed with a through hole 7a into which the adjustment screw 11 can be inserted, and a support hole 7b into which a rotary shaft 12 for rotatably supporting the chamfering punch unit 5 on the support member 6 can be inserted. (FIGS. 4 and 5).
The lower body 8 and the upper body 7 configured as described above are integrally fixed to form a chamfering punch unit 5 (FIG. 5c). The chamfering punch unit 5 is inserted between a pair of downward brackets 6 a provided on the support member 6, and is rotatably supported on the support member 6 by the rotation shaft 12.
Locking portions 14 for locking the springs 13 are provided on the front and rear surfaces of the lower body 8 in the chamfering punch unit 5, and the locking portions 15 are also provided on the side surfaces of the protruding portions 3 b of the main body portion 3. Is provided. By spanning the spring 13 over the locking portions 14 and 15, the chamfering punch unit 5 is always urged toward the protruding portion 3 b by the force of the spring 13.
Further, the angle of the chamfering punch unit 5 configured as described above can be finely adjusted by the adjusting screw 11. Specifically, by rotating the adjustment screw 11 in the tightening direction, the tip of the adjustment screw 11 protrudes from the chamfering punch unit 5 and comes into contact with the protruding portion 3b, whereby the chamfering punch unit 5 rotates. It is rotated outward (right side in FIG. 2) about the shaft 12.
By configuring as described above, the chamfering punch unit 5 can be rotated around the rotation shaft 12 in a direction orthogonal to the ridge corner portion of the material A to be chamfered.

Next, the operation of the chamfering apparatus configured as described above will be described.
FIG. 8 is a top view of the material A to be processed by the chamfering apparatus. The shape of the material A is merely an example, and the shape of the material A to be processed may be an arbitrary shape.
This material A has two concave portions recessed inwardly on the outer peripheral portion thereof, and the chamfering apparatus of the present application is used for chamfering the ridge corners at the back of these concave portions.
The chamfering apparatus of the present invention is designed so that when the material A is fixed to the fixing base 1, the chamfering punch unit 4 comes to a position offset to the outside with respect to the material A. The leading edge portion of the punch member 9 of the taking punch unit 4 is configured to partially overlap the ridge corner portion at the back of the concave portion of the material A.
Further, the chamfering punch unit 5 is configured so that the chamfering punch unit 5 can be adjusted to be inclined outward in the initial state by the adjusting screw 11 according to the plate thickness of the material A. .
When the lifting device 2 is lowered downward from this initial state, the tip edge of the punch member 9 hits the ridge corner of the material A to be chamfered. When the lifting device 2 is further lowered from this state, the punch member 9, that is, the punch unit 5, is tapered so that the tip of the punch member 9 is reduced in diameter by about 45 degrees. 9 is guided by the inclined tip 9 and starts to rotate outward about the rotary shaft 12 against the force of the spring 13. As a result, while the punch unit 5 rotates from the inside to the outside of the ridge corner of the material A, the blade at the tip of the punch member 9 scrapes off the ridge corner of the material A to be chamfered (see FIG. 9).
Thereafter, when the lifting device 2 is raised upward, the chamfering punch unit 5 returns to the original position by the force of the spring 13.
By configuring in this way, just by raising and lowering the lifting device 2, the chamfering punch unit 5 can perform chamfering by scraping off the ridge corner to be chamfered of the material A while swinging. The chamfering operation can be performed easily, reliably and efficiently. Further, the chamfering punch unit 5 swings the ridge corner portion of the material A to be chamfered only by raising and lowering the lifting device 2, so that the ridge corner portion to be chamfered is inward as in the illustrated embodiment. Even if the curved shape is concave, the chamfering of the ridge corner can be performed only by matching the size and shape of the punch member 9.

In the above-described embodiment, the punch member includes a cylindrical main body, but the shape of the punch member is not limited to the present embodiment, and any shape can be selected depending on the shape of the ridge corner of the material A to be chamfered. For example, a prismatic shape may be used.
In the above-described embodiment, the straight portion 9b is formed on the outer periphery of the flange 9a of the punch member 9 every 90 degrees so that the punch member 9 can be rotated 90 degrees to be set on the lower body 8 again. However, this configuration is not limited to the present embodiment, and the angle between the straight portions provided in the flange 9a can be arbitrarily determined. Further, instead of providing the straight portion on the circular flange, the flange may be formed in a polygonal shape such as a pentagon or a hexagon.

A Material to be processed 1 Fixing base 2 Lifting device 3 Main body part (cross-section downward convex type)
3a Base 3b Protruding part 4 Swing cut unit 5 Chamfering punch unit 6 Support member 6a Bracket 7 Upper body 7a Through hole 7b Support hole 8 Lower body 8a Stepped through hole 8b Key groove 9 Punch member 9a Flange 9b Linear part 10 Pin 11 Adjustment screw 12 Rotating shaft 13 Spring 14 Locking portion 15 Locking portion

Claims (5)

An elevating device for supporting a chamfering punch unit having a punch member provided with a blade portion at the tip;
A fixing table disposed below the lifting device and fixing a material to be chamfered;
The chamfering punch unit is supported by the lifting device so as to be rotatable in a direction perpendicular to the ridgeline of the ridge corner of the material to be chamfered,
The tip edge portion of the punch member in the chamfering punch unit is formed in a tapered shape so as to become thinner toward the tip,
The chamfering punch unit is offset to the outer side in the top view relative to the material to be chamfered so that the edge of the punch member and the ridge corner of the material to be chamfered partially overlap each other in the top view. Arranged,
While the elevating device is lowered, the chamfering punch unit scrapes off the ridge corner of the material to be chamfered with a blade formed at the tip of the punch member, while tapering the punch member. A swing-cut type chamfering apparatus, characterized in that the swingcut type chamfering apparatus is configured to be guided by a tip edge portion formed in a shape and to turn to the outside of a material to be chamfered. The swing cut type chamfering device according to claim 1, wherein the punch member in the chamfering punch unit has a cylindrical shape. The chamfering punch unit includes a through hole that supports insertion of the punch member in the axial direction thereof,
The swing cut type chamfering process according to claim 2, wherein the punch member is configured to be rotated and fixed with respect to the insertion hole by a predetermined angle about the axis thereof. apparatus. The punch member has a flange projecting radially outward at an upper portion thereof, and the flange has at least two linear portions;
The swing cut type chamfering apparatus according to claim 2 or 3, wherein the chamfering punch unit includes a rotation stopping mechanism that locks the linear portion of the flange. The swing-cut type chamfering process according to any one of claims 1 to 4, wherein the chamfering punch unit includes an adjusting unit capable of adjusting an angle of an initial position with respect to the lifting device. apparatus.

Images