JPH09277111A - Chamfering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chamfering device shortening the time for chamfering a work and capable of improving the productivity of part machining. SOLUTION: A chamfering process is conducted with chamfering cutters 32a, 32b fitted with two cutter sections 33a, 33b arranged with cutting edges 35 into conical surfaces. Four ridges of a work 5 can be concurrently chamfered in one process, chamfering can be conducted with good accuracy in a short time, the chamfering process can be automated, and its productivity can be sharply improved.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a chamfering device for chamfering a ridge of a work.

[0002]

2. Description of the Related Art Several devices have been put into practical use for chamfering by milling the edges of a work while moving it along the guide surface of a cube or a rectangular parallelepiped, and an example thereof is shown in FIG. The current chamfering device includes two guide surfaces 1 and 2 arranged so as to be orthogonal to each other, and a gap 3 is provided between the guide surfaces 1 and 2. And
A chamfering cutter 4 is installed in the gap 3 so that the angle of the cutting edge with respect to the guide surfaces 1 and 2 is approximately 45 degrees. Therefore, when the work 5 is moved in accordance with the guide surfaces 1 and 2, the corner (ridge) 6 of the work 5 is moved to the cutter 4
Is chamfered by milling.

[0003]

By using such a chamfering device, linear chamfering can be easily and quickly performed by simply moving the work according to the guide, and compared with the case of machining using a milling machine. The workability can be greatly improved. Moreover, since it is easy to adjust the width of the chamfered surface, it is possible to provide a good quality product. However, in recent years, there has been a demand to further reduce the unit processing cost due to the influence of the yen's appreciation, etc. Therefore, it is important to further reduce the time required for chamfering and reduce the processing cost.

Therefore, an object of the present invention is to provide a chamfering device capable of chamfering a work such as a cube or a rectangular parallelepiped in a shorter time with high accuracy and also easily automating.

[0005]

Therefore, in the present invention, the cutting edge for chamfering is arranged in a conical surface shape with respect to the rotating shaft. Furthermore, two conical surfaces of this cutting edge are provided, and a chamfering cutter attached to the rotary shaft so that their vertexes face each other is adopted, so that at least two edges of the work can be chamfered at the same time. That is, the chamfering device of the present invention is characterized by having a chamfering cutter in which a plurality of cutting edges are arranged so as to form two conical surfaces whose apexes face each other with respect to the rotation axis. By adopting the chamfering cutter of the present invention, it is possible to chamfer a plurality of ridges of a workpiece at the same time. Therefore, it is possible to save not only the time for milling but also the trouble of setting different ridges for the chamfering cutter. Therefore, the workability of chamfering can be significantly improved, and the time required for the work can be shortened.

Furthermore, by providing a flat guide surface and setting the rotation axis of the chamfering cutter perpendicular to this guide surface, it is possible to simultaneously chamfer at least two edges by simply moving the work along the guide surface. It can be done accurately. Also, by providing a pair of chamfering cutters, chamfering of four edges can be performed simultaneously. Further, if at least one of the chamfering cutters is movable, the interval between the chamfering cutters can be adjusted, so that it is possible to easily perform chamfering of works having different widths or works in different directions.

Further, by providing a means for moving the work between the pair of chamfering cutters along the guide surface,
The chamfering work can be automated. Furthermore, by providing a mechanism that automatically changes the direction of the work and automatically controls the interval between chamfering cutters, it is also possible to automatically chamfer 8 or 12 edges of a cube or rectangular parallelepiped work, for example. Becomes

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show the outline of a chamfering device 10 according to the present invention. Chamfering device 1 of this example
No. 0 is assembled on a pedestal 11 installed on the floor so that stable chamfering work can be performed, and a horizontal and flat guide surface 12 is provided substantially at the center thereof. Guide surface 1
A holding mechanism 20 capable of moving the work 5 in the front-rear direction of the base 11 at a predetermined speed by sandwiching the work 5 from the vertical direction of the base 11 is installed on the upper part 2. The holding mechanism 20 of this example is a rectangular work 5 such as a cube or a rectangular parallelepiped.
It is provided with a plunger mechanism 21 for pressing and holding the work piece 5 from the top to the bottom and a spacer 22 for adjusting the height of the work piece 5, so that the work piece 5 can be held at an appropriate height. Further, the holding mechanism 20 of this example includes a moving mechanism 23 that moves in the front-back direction along the guide surface 12 while holding the work 5 by the plunger 21, and the moving mechanism 23 is the table shown in FIG. On the front side of the board 11, the work 5 can be rotated at least 90 degrees in the horizontal direction.

Two chamfering units 30a and 30b are installed on both sides of the guide surface 12 of the base 11,
These units 30a and 30b are movable horizontally in the left and right directions with respect to the guide surface 12. Inside the chamfering units 30a and 30b, that is, on the side of the guide surface 12, chamfering cutters 32a and 32b having a rotation shaft 31 perpendicular to the guide surface 12 are installed, respectively.
The chamfering of the ridge 6 of the work 5 is performed by rotating b. Each chamfer unit 3
Chamfering cutters 32a and 32 for 0a and 30b
A motor (not shown) for rotating b and a moving mechanism (not shown) for moving the chamfering units 30a and 30b to the left and right are provided, and the chamfering units 30a and 30b can be moved to a pre-programmed position for chamfering. It is like this.

FIG. 3 is an enlarged view of the chamfering cutters 32a and 32b mounted on the chamfering unit. Since the chamfering cutters 32a and 32b of this example have the same configuration, the description will be given based on one chamfering cutter 32a. In the chamfering cutter 32a of this example, two cutter portions 33a and 33b are attached in the vertical direction to a rotating shaft 31 extending vertically. Each of the cutter portions 33a and 33b has a truncated cone shape as a whole, and a cutting blade 35 is provided on the surface thereof so as to form a conical surface. The cutter portions 33a and 33b are mounted on the rotary shaft 31 so that their respective vertex directions face each other, that is, the cutting blade 35 faces the inside of the work 5. Further, the cutting blades 35 of the cutter portions 33a and 33b are formed so as to form a surface of 45 degrees with respect to the rotating shaft 31. Therefore,
By rotating the chamfer cutters 32a and 32b, the four edges 6a, 6b, 6c and 6 on both sides of the work 5 are rotated.
d is chamfered simultaneously.

Further, in the chamfering device of this embodiment, by rotating the respective chamfering cutters 32a and 32b in the opposite directions, it is possible to prevent the moment from being generated in the work 5 and prevent the displacement of the work. There is. Further, the chamfering cutters 32a and 32b are moved left and right with respect to the guide surface 12 so that the interval between the chamfering cutters 32a and 32b can be controlled. Therefore, the chamfering process can be easily performed on the works 5 having different widths and on the sides having different widths. Of course, either one of the chamfering cutters may be moved left and right to control the interval between the chamfering cutters.

Furthermore, in the chamfering cutters 32a and 32b of this example, the cutter portions 33 arranged vertically are provided.
a and 33b are supported by a sleeve-shaped vertical movement mechanism 34. Therefore, the cutter parts 33a and 33b are moved up and down to move the cutter parts 33a and 33b.
The interval of b can also be adjusted. Therefore, it is possible to easily chamfer the works 5 having different thicknesses or the sides of the works 5 having different thicknesses. Of course, similarly to the above, one side of the cutter parts 33a and 33b may be moved up and down to control the interval between the cutter parts.

In this embodiment, the truncated cone-shaped cutter portions 33a and 33b are used, but the cutting edge 35 may be arranged so as to form a conical surface. When the conical surface formed by the cutting edge 35 is large, chamfering can be performed by applying the ridge 6 of the work to any position thereof. Therefore, within the range where the cutting edge 35 hits, it is possible to deal with works having different thicknesses without moving the cutter portions 33a and 33b in the vertical direction. Further, in this example, the cutter portions 33a and 33b which are installed in the direction of 45 degrees with respect to the rotating shaft 31 and which perform linear milling processing are adopted, but it is also possible to adopt cutter portions having different angles. is there. When R chamfering is performed instead of C chamfering, a cutter portion in which a cutting edge is arranged so as to obtain a curved cutting surface along a conical surface may be adopted.

FIG. 4 shows an example of automatically performing a chamfering process of a work by using the chamfering device 10 of this example. First, in step 51, the work 5 is chamfered by the chamfering device 10.
To supply. Next, in step 52, the holding mechanism 2
The work 5 is held by 0, and the work 5 can be moved along the guide surface 12. Based on the position where the workpiece 5 is held, the chamfering units 30a and 30b move in step 53 to move the chamfering cutters 32a and 32b.
Perform positioning. If necessary, the intervals between the cutter portions 33a and 33b of the individual chamfering cutters 32a and 32b are further adjusted. When the positions of the chamfering cutters 32a and 32b are determined, in step 54, the chamfering cutters 32a and 32b are rotated while the workpiece 5 is moved by the holding mechanism 20 to start chamfering. When the work 5 is moved from the front to the rear of the chamfering device 10 by the holding mechanism 20, the chamfering of the four edges of the work 5 is completed, so the work 5 is returned to the front in step 55.

When the thickness of chamfering is large, chamfering can be performed in two steps of from front to back and from back to front. In this case, the positions of the chamfering cutters 32a and 32b may be controlled according to the moving direction of the work. Further, in this example, chamfering cutters 32a and 32b of the same type are provided on both sides of the guide surface 12 in one.
Although they are provided one by one, it is of course possible to provide a plurality of types of chamfering cutters such as a chamfering cutter for roughing and a chamfering cutter for finishing. In this case, these chamfering cutters of a plurality of types may simultaneously perform processing, or may perform different processing depending on the moving direction. Furthermore, the movement of the work is not limited to one time, and may be performed a plurality of times as necessary.

When the work 5 returns to the front in step 55, it is determined in step 56 whether the chamfering of the eight edges of the work 5 has been completed. At the stage where the four edges are chamfered, in step 57, the work 5 is rotated 90 degrees using the holding mechanism 20, and then the process returns to step 53 to chamfer the remaining four edges. After chamfering the eight edges, the process proceeds to step 58, and in step 58, the holding mechanism 20
The work 5 is released from and the work is taken out in step 59. This completes the chamfering process for the eight edges of the work 5. The chamfering device 10 of this example is provided with the function of rotating the work 5 in the horizontal direction with respect to the guide surface 12, but by adding the function of rotating the work 5 in the vertical direction with respect to the guide surface 12, It is possible to perform the chamfering process automatically on all 12 edges of the work 5 by repeating the above. Also in the apparatus 10 of this example, if the work is taken out and then rotated and reset, the remaining 4
Chamfering of ridges is easy. Note that these steps are examples of steps that can be programmed in the chamfering apparatus 10 of this example, and other programming such as chamfering of four edges without rotating the work is also possible. Further, it is possible to perform the chamfering work manually by using the chamfering device 10 of this example.

As described above, by using the chamfering device 10 of this example, the chamfering of the work can be automatically performed, and further, the four edges of the work can be simultaneously processed in a batch. Chamfering work can be done in a short time. Further, the time required for positioning and the like is short, and since the four edges can be processed collectively, the precision of the chamfered surface is very high. Further, since the four edges of the work can be processed at the same time, the chance of re-holding the work is reduced, and it is possible to prevent the surface of the work from being scratched and the quality of the product from being deteriorated. Furthermore, by adopting the apparatus of this example, it is possible to automatically perform a chamfering process of not only 4 edges but also 8 edges or 12 edges, so that the productivity can be greatly improved and a high quality product can be obtained. Can be supplied inexpensively and in a short time. Of course, it is also possible to automatically or semi-automatically perform a process of chamfering two edges at the same time or chamfering only one edge by using the chamfering device of this example.

For example, as shown in FIG. 5, a chamfering cutter 32a is set below the inclined guide surface 12, and the workpiece 5 set facing the chamfering cutter 32a is chamfered on the surface 5a. It is possible to chamfer two edges at the same time by manually or automatically moving while receiving with the stopper 13.

As described above, by using the chamfering cutter of the present invention, various kinds of chamfering treatments for various works can be performed.

[0020]

As described above, the chamfering device according to the present invention chamfers by using a chamfering cutter in which cutting edges are arranged so as to form two conical surfaces whose apex directions face each other. It is possible to chamfer multiple edges of the work at the same time. Therefore, it is possible to accurately chamfer a work such as a cube or a rectangular parallelepiped in a short time, and
It is also possible to automate the chamfering process and significantly improve productivity. Therefore, by using the chamfering device of the present invention, it becomes possible to improve the productivity of component processing and further reduce the unit price of component processing, so that it is possible to provide a high quality product at low cost.

[Brief description of drawings]

FIG. 1 is a front view showing an outline of a chamfering device according to the present invention.

FIG. 2 is a side view of the chamfering device shown in FIG.

FIG. 3 is an enlarged view showing a portion of a chamfering cutter of the chamfering device shown in FIG.

FIG. 4 is a flowchart showing an example of a process of performing chamfering using the chamfering device shown in FIG.

FIG. 5 is a diagram showing an outline of an apparatus for simultaneously chamfering two edges using the chamfering cutter of the present invention.

FIG. 6 is a diagram showing an example of a conventional chamfering device.

[Explanation of symbols]

 10-Chamfering device 11-Base 12-Guide surface 20-Holding mechanism 21 Plunger 22-Spacer 23-Moving mechanism 30-Chamfering unit 31-Rotating shaft 32-Chamfering cutter 33 ..Cutter part 34..Sleeve for moving 35 ..

Claims (5)

[Claims] 1. The apex direction facing the axis of rotation 2
A chamfering device having a chamfering cutter in which a plurality of cutting edges are arranged so as to form one conical surface. 2. The chamfering device according to claim 1, wherein the chamfering cutter has a flat guide surface, and a rotation axis of the chamfering cutter is set to be perpendicular to the guide surface. 3. The chamfering device according to claim 1, comprising a pair of the chamfering cutters. 4. The chamfering device according to claim 3, wherein the distance between the pair of chamfering cutters can be adjusted by moving at least one of the pair of chamfering cutters. 5. The flat guide surface according to claim 3,
And a means for moving the work along the guide surface between the pair of chamfering cutters.