JPH0970748A - Workpiece chamfering method and device thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform chamfering at required sections simultaneously while deburring the whole of a workpiece by gripping and inserting the workpiece into a vibration tank of a vibration barrel device and rotating the workpiece in the opposite direction to the direction of circulation of an abrasive so as to chamfer an end face to be machined mechanically. SOLUTION: A ceramic abrasive 8 is put into a vibration tank 7 of a vibration barrel device 10 and is rotated and vibrated by an electric motor in which a vibrator 5 provided in a lower section of the vibration tank 7 is built to circulate it in the circumferential direction. In the abrasive 8, a workpiece 9 is attached to a workpiece mounting device 24 of a workpiece gripping device 20 and a workpiece rotation device 21 is driven to rotate the workpiece mounting device 24 in the opposite direction to the direction of circulation of the abrasive 8. Thus, the abrasive 8 and the workpiece 9 are rotated in the opposite directions mutually to rub them forcedly so that chamfering of an end face to be machined mechanically of the workpiece 9 is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chamfering method for a work and its apparatus.

[0002]

2. Description of the Prior Art Generally, the machined end surface of a work piece, such as a compressor disk, is
A rounded R surface is chamfered to prevent cracking due to stress concentration. This chamfering of the end surface is performed using a cutting tool with a special machine,
The worker used a rasp or the like to do it manually. Further, a vibrating barrel device is used for polishing the work.

In this vibrating barrel device, for example, a large number of ceramic-based abrasives are inserted into a vibrating tank, and a work is introduced into the abrasives while being rotationally vibrated by an electric motor or the like. By rubbing with the work and polishing the machined surface of the work, rust, small burrs, and cut marks generated during machining are removed. Further, the work is rotated and polished in this abrasive for several tens of minutes.

The burr is, for example, a machined end surface of a work or a protruding portion of a corner.

[0005]

However, in the conventional dedicated machine for chamfering, when the cutting tool is pushed into the machined end surface of the workpiece to be chamfered, a bulge is further generated at its corner, which again causes a problem. It is necessary to perform a hand-finishing work on the protruding portion. In manual work such as file, the work to be processed, for example,
The compressor disk is provided with a large number of slots for mounting the compressor blades on the outer periphery thereof, and in such a complicated work, the machining thereof requires a great deal of labor and time. Further, the vibrating barrel device originally removes rust, burrs, and cutting marks generated during machining of the work, and the work only rotates together along the circulation direction of the abrasive material. Since the abrasive is a small ceramic type granular material, the force when rubbing against the work is weak, while the abrasive is made larger to increase the force when rubbing, the abrasive machined the work. The chamfering to the required accuracy could not be achieved because the depth of the part was not reached. Moreover, it is not possible to simultaneously deburr the entire machined surface and chamfer the necessary parts.

The present invention was created in view of the above problems. That is, the present invention originally uses a vibrating barrel device that is used to remove rust, burrs, and cuts generated during machining to deburr the entire work while chamfering the necessary parts at the same time. It is an object of the present invention to provide a chamfering method for a work and an apparatus for the same, which are intended to reduce the labor and time required for chamfering.

[0007]

In order to achieve the above object, in the first invention of the present invention, a substantially cylindrical vibrating tank having an open upper portion and having side walls at both ends is rotationally vibrated so that the vibrating tank is provided inside the vibrating tank. Machining is performed by gripping and inserting a work into a vibrating tank of a vibrating barrel device that circulates a ceramic-based abrasive contained therein and rotating the work in a direction opposite to the circulating direction of the abrasive. Chamfered the end faces.

In the second invention, the abrasive is a cylindrical member of two kinds, large and small.

In the third aspect of the present invention, the abrasive is made by mixing two kinds of abrasives, large and small, in equal amounts.

According to a fourth aspect of the present invention, there is provided a work chamfering device comprising a vibrating barrel device and a work gripping device for gripping and inserting a work into the vibrating barrel device. It consists of a substantially cylindrical vibrating tank with side walls at both ends, a vibrator attached to this vibrating tank for rotating and vibrating the vibrating tank, and a support for elastically supporting the vibrating tank. It consists of a device and a work rotating device for rotating the work.

According to the chamfering method for a work and the apparatus therefor of the present invention, two kinds of ceramic-based abrasives, large and small, contained in the vibrating tank are circulated in the circumferential direction of the vibrating tank while the abrasive material is being polished. Since the work is inserted inside and rotated so that it is in the direction opposite to the circulation direction of the abrasive, the force when the work and the abrasive rub against each other becomes strong,
Chamfering can be performed on the machined end surface of the work according to the required accuracy, and a great deal of labor and time can be reduced during chamfering.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings. 1 is a front view of a work chamfering device of the present invention, FIG. 2 is a side view of a work chamfering device of the present invention, FIG. 3 is a view showing a state in which a work is attached to a work attaching device, and FIG. A front view, FIG. 5 is a partially enlarged view of FIG. 4, and FIG. 6 is an enlarged view of part a of FIG.

As shown in FIG. 1 and FIG. 2, the chamfering device for a workpiece has a substantially cylindrical vibration tank 7 having an open upper portion and side walls 39 at both ends, and a vibration tank attached to the lower portion of the vibration tank 7. A vibrator 5 for rotating and vibrating the tank 7,
The vibrating barrel device 10 includes a support base 40 that elastically supports the vibrating tank 7, an elevating device 26 that elevates and lowers the work 9, and a work holding device 20 that includes a work rotating device 21 that rotates the work 9. There is.

The vibrating barrel device 10 has a base 1 provided with a cushioning material 41 at a lower portion thereof, and a column 2 standing on the base 1.
A support base 40 including a horizontal girder 3 provided on the upper part of the support column 2 and a plurality of springs 4 arranged on the upper part of the horizontal girder 3 so as to face each other in the front-rear direction, and the support base 40. It is composed of a substantially cylindrical vibrating tank 7 having an open upper portion placed on the upper side and having side walls 39 attached to both ends thereof, and a vibrator 5 provided below the vibrating tank 7. Reference numeral 6 denotes a horizontal member provided so as to project in the front-back direction of the vibration tank 7, and the vibration tank 7 is placed on the spring 4 via the horizontal member 6. Reference numeral 8 denotes ceramic-based abrasives of two types, large and small, which are inserted into the vibration tank 7. Reference numeral 9 is a work (a compressor disk in this embodiment).
The work 9 has the shape shown in FIG. 4, and 9a is the slot portion of the compressor disk.

The work gripping device 20 includes a base 1
1, a support column 12 having a guide rail 13 standing upright on the base 11, a lift truck 14 provided so as to be able to move up and down along the guide rail 13 of the support column 12, and a lifting device for lifting the lift truck 14. 26, a horizontal frame 15 provided so as to project from the lifting carriage 14, and a work holding arm 1 provided so as to extend downward on the horizontal frame 15.
6, a work attachment device 24 provided below the work gripping arm 16, and a work rotation device 2 for rotating the work attachment device 24 provided above the horizontal frame 15.
And 1. In addition, an upper guide roller 17 is provided on the lift truck 14 via a guide roller support bracket 18 and a guide roller support member 19 so as to have a shaft 37.
Similarly, a lower guide roller 17a is also attached to the lower side of the shaft 37a via a guide roller support bracket 18a and a guide roller support member (not shown). Furthermore, lift truck 1
4 can be moved up and down along the guide rails 13 of the column 12 by the lifting device 26. The lifting device 26 has a wire drum 28 whose one end is attached to a bearing 27 provided on the column 12 by a shaft 29. To the elevating table 14 and the middle part is a bearing 31 provided on the base 11.
A lower sheave 30 attached by a shaft 32 and a wire 36 wound around an upper sheave 33 attached by a shaft 35 to a bearing 34 provided on the upper portion of the column 12. In this embodiment, the lifting device 26 rotates the handle 42 to rotate the wire drum 28,
I try to wind up and down the wire,
For example, the wire drum 28 may be rotated by an electric motor or a hydraulic motor.

As shown in FIGS. 2 and 3, a work attaching device 24 is rotatably provided at the lower part of the work gripping arm 16 by a rotary shaft 38, and when chamfering the processed end surface of the work, the work is attached. 9 is attached to the work attaching device 24 with bolts 25. Further, the work rotating device 21 is driven to the rotating shaft 38, and the rotating force thereof is transmitted via the gears 22 and 22a, the rotating shaft 23 and a bevel gear (not shown) to rotate. .

As shown in FIG. 4, a large number of slots 9a for mounting compressor blades are provided on the outer periphery of the compressor disk (workpiece 9). The chamfering of the processed end surface of the compressor disk is performed, for example, on the processed end surface such as the bottom surface f, right side r and left side s of the slot portion 9a as shown in FIGS.

The operation according to the embodiment will be described below. Two kinds of ceramic-based abrasives 8 of a certain size are put in the vibrating tank 7 of the vibrating barrel device 10,
An electric motor having a vibrator 5 provided in the lower part of the is rotationally oscillated and circulates in the circumferential direction. Then, in the abrasive material 8, the work 9 is attached to the work attaching device 24 of the work holding device 20 with the bolt 25, and is inserted so that the axis of the workpiece 9 and the axis of the vibrating tank 7 are oriented in the same direction, The work rotating device 21 is driven to rotate the work attaching device 24 in the direction opposite to the circulation direction of the abrasive material 8. In this way, the abrasive 8 and the work 9 are rotated in opposite directions, and are forcibly rubbed to chamfer the machined end surface of the work 9. Further, the circulation of the polishing material 8 and the rotation of the work 9 are alternately performed for several tens of minutes.

The inventor of the present invention conducted a test to confirm the effect of the present invention. That is, in the vibrating tank 7 of the vibrating barrel device 10, 4.5 m of ceramic-based material is used.
The same amount of two types of abrasives, that is, a cylindrical abrasive having a diameter of m and a length of 9 mm and a cylindrical abrasive having a diameter of 8 mm and a length of 12 mm, which are the same as the ceramic type, are inserted in equal amounts. 8 is rotatively oscillated by the vibrator 5 to circulate in one direction, and the compressor disk 9 is provided in the abrasive 8 and the shaft core of the compressor disk 9 and the vibration tank 7 are provided.
Was inserted so that the axis of the abrasive material was oriented in the same direction, and the abrasive material 8 was rotated in the direction opposite to the circulation direction. This circulation and rotation were carried out by reversing forward and backward for about 60 minutes. As a result, it was confirmed that the following chamfering was performed in the slot portion 9a of the compressor disk 9 shown in FIG.

FIG. 6 is an enlarged view of the portion shown in FIG.
Is the end of the slot 9a of the compressor disk 9, and B is the end of the side of the compressor disk 9. At the bottom end face f of the slot portion 9a, in the unprocessed state, the A surface was R0.12 and the B surface was R0.03, whereas after processing, the A surface was R0.18 and the B surface was R0. ．
I turned 18. At the left end surface s of the slot portion 9a,
In the unprocessed state, the A surface had R0.1 and the B surface had R0.2, whereas after processing, the A surface had R0.18 and the B surface had R0.4. At the right end surface r of the slot portion 9a, in the unprocessed state, the surface A is R0.2, the surface B is R0.
4, the surface A was R0.2 and the surface B was R0.42 after processing.

As can be seen from these facts, it was confirmed that the machined end surface of the compressor disk 9 was chamfered to almost the required accuracy.

The present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the technical idea described in the claims.

[0023]

According to the above-described method and apparatus for chamfering a workpiece of the present invention, two kinds of ceramic-based abrasives, large and small, are circulated in a certain direction while being mixed in a vibrating tank of a vibrating barrel device. Put the work in the abrasive,
Since the abrasive material is forcibly rotated in the opposite direction to the circulation direction, chamfering can be performed on the machined end surface of the work according to the required accuracy, and a great deal of labor and time is required for chamfering. It has excellent effects such as

[Brief description of drawings]

FIG. 1 is a front view of a vibrating barrel device of the present invention.

FIG. 2 is a side view of the vibrating barrel device of the present invention.

FIG. 3 is a diagram showing a state in which a work is attached to a work attachment device.

FIG. 4 is a front view of a work.

5 is a partially enlarged view of FIG.

FIG. 6 is an enlarged view of part a of FIG.

[Explanation of symbols]

 1 Base 2 Support 3 Cross Girder 4 Spring 5 Vibrator 6 Horizontal Member 7 Vibration Tank 8 Abrasive 9 Machined Product (Work) 9a Compressor Disk Slot 10 Vibration Barrel Device 11 Base 12 Support 13 Guide Rail 14 Lifting Cart 15 Horizontal frame 16 Work gripping arm 17 Upper guide roller 18 Guide roller supporting bracket 19 Guide roller supporting member 20 Work gripping device 21 Work rotating device 22, 22 Gear 23 Rotating shaft 24 Work attaching device 25 Bolt 26 Work lifting device 27 Bracket 28 Wire drum 29 Shaft 30 Lower sheave 31 Bracket 32 Shaft 34 Bracket 35 Shaft 36 Wire 37, 37a Shaft 38 Rotating shaft 39 Side wall 40 Support base 41 Buffer material 42 Handle

Claims (4)

[Claims] 1. A vibrating barrel device for circulating a ceramic abrasive material contained in a vibrating tank in a circumferential direction by rotationally vibrating a substantially vibrating vibrating tank having an open upper portion and having side walls at both ends. A chamfering method for a work, characterized in that a work is grasped and inserted into a vibrating tank, and the machined end surface is chamfered by rotating the work in a direction opposite to a circulation direction of the abrasive. 2. The chamfering method for a work according to claim 1, wherein the abrasive is a large and small cylindrical member. 3. The method for chamfering a work according to claim 1, wherein the abrasive is a mixture of two kinds of abrasives, large and small. 4. A chamfering device for a work, which comprises a vibrating barrel device and a work gripping device for gripping and inserting the work into the vibrating barrel device, wherein the vibrating barrel device has an open top and side walls at both ends. A substantially cylindrical vibrating tank having, a vibrator attached to the vibrating tank for vibrating the vibrating tank rotationally, and a support for elastically supporting the vibrating tank, the work gripping device is an elevating device for elevating and lowering the work,
A chamfering device for a work, comprising: a work rotating device for rotating the work.