JPS6024756B2 - How to operate a friction welding machine - Google Patents

Description

[Detailed Description of the Invention] This invention allows a pair of relatively rotating workpieces to be supported on a single line, and to generate frictional heat between the supported parts to soften and then stop and hold the workpieces. This invention relates to a method of operating a friction press machine that presses both workpieces together and cuts off flash (burrs) on a press bag after completion of press forming.

The conventional method of operating such a friction press machine is as follows.

That is, after setting both workpieces on the chuck, connect the clutch between one of the chucks and the motor, rotate the motor to rotate the clutch at high speed, and bring both workpieces into contact under thrust. Frictional heat generation is generated between the opposing bales of both processed materials. When the supporting part becomes soft due to the friction generated, the clutch is disengaged, the rotation of the motor is stopped, and the brake is applied to stop the rotation of the chuck, thereby bringing the two workpieces into contact with each other. In this way, once both workpieces are pressed together, the gripping force of the stationary chuck is released, the brake is released, the clutch is reconnected, and the motor is rotated to rotate the workpiece. While doing so, cut out and remove the flash formed on the compression twill part.

Once the flash has been removed, the clutch is disengaged, the motor is stopped, and the brake is applied to stop the cutting rotation, completing one process. In this way, the start and end of friction rotation and flush removal rotation are all performed by ON/OFF control of the clutch and motor (
(See Table 1), the clutch and motor may be overworked and both may turn off.
, This not only has a major negative effect of shortening the life of the control circuit that performs OFF control, but also requires time for the motor to start up at the start of both frictional pressure heating and flash cutting, and the pressure is immediately turned off. There was a defect in which the bale and cutting processes could not be transferred and had a negative impact on work efficiency.

Table I Table U The object of the present invention is to eliminate the defects in the conventional operating methods, to extend the life of the clutch and motor, and to also provide a method of operating a friction hair presser that can improve work efficiency. It's about doing.

The purpose of this invention is to combine a pair of workpieces into bales while applying a thrust on one axis, rotate one workpiece by a motor through a clutch, and generate frictional heat between the saddle parts to soften the workpiece. , by rapidly stopping the frictional rotation and maintaining the stopped state, the two processed materials are pressed together,
In the method of operating a friction pressure bushing machine in which the flash of the pressure welded part is cut and removed while the workpiece is rotated by a motor, the friction rotation is stopped by either controlling the control means by cutting off the input to the motor or disengaging the clutch. The cutting rotation can be stopped by using the brake means in combination with the other control means of the control means for cutting off the input to the motor or disengaging the clutch. Next, an embodiment embodying the present invention will be described based on the drawings.

In this embodiment, the frictional rotation is stopped by using a clutch disengagement control means and a brake means together, without searching for a control means for cutting off the input to the motor, and a means for stopping the cutting rotation and disengaging the clutch is investigated. The control means for cutting off the input to the motor and the braking means are used in combination without any problem.
First, to explain the configuration of the friction pressure bushing machine in which this invention is implemented, 1 is a motor, 2 is a spindle to which the rotation of the motor 1 is transmitted via a belt 3, and 4 and 5 are provided on the spindle 2. A clutch and a brake, 6, are provided at the tip of the spindle 2, and a rotating chuck for gripping and fixing one of the workpieces 7a; 8 is a rotating chuck for gripping and fixing the other workpiece 7b on the same axis as the gripping and fixed workpiece 7a; The stationary chuck 9, which grips and fixes the workpiece and is capable of reciprocating movement along its marking line, is a cutting tool for cutting and removing the flash 10 formed in the pressure saddles of both the workpieces 7a and 7b. Next, a method of operating the friction reinforcement machine configured as described above will also be explained.

First, the workpieces 7a and 7b are gripped and fixed to the rotating and stationary chucks 6 and 8, respectively, which are located apart from each other. At this time, clutch 4 is already connected. Next, the motor 1 is driven to rotate the rotating chuck 6 and the workpiece 7a, and the stationary chuck 8 is moved toward the rotating chuck 6 so that the end surfaces of the workpieces 7a and 7b are brought into contact with each other. In this way, when the rotating side workpiece 7a reaches a predetermined rotational speed, a thrust is applied in the opposing direction, and both workpieces 7a, 7b are
This causes frictional rotation between the opposing parts.

The frictional heat caused by this frictional rotation causes both workpieces 7a and 7b to
When the support part of the motor 1 is sufficiently softened, only the clutch 4 is disengaged without turning off the motor 1 to sever the connection between the chuck 6 and the motor 1, and the brake 5 is applied to rapidly stop the chuck 6. This state is maintained for a certain period of time, and both processed materials 7a and 7b are brought together under pressure. Therefore, as shown in FIG. 2a, both workpieces 7a and 7b have a flash 1
This results in one workpiece 7 on which 0 is formed. Note that there is also a pressing method in which a larger thrust is applied in the supporting direction to both the workpieces 7a and 7b after the rotation is stopped. When the pressing is completed, the gripping force of the stationary chuck 8 is released, the clutch 4 is connected, and the workpiece 7 is rotated again, and the flash 10 is cut with the cutting tool 9 as shown in FIGS. 2b and 2c. Remove it so that the outer peripheral surface of the pressure bale part is the same as the other parts. Thereafter, the cutting tool 9 is separated from the workpiece 7, the clutch 4 is not disengaged, only the motor is stopped, and the brake 5 is applied, and the workpiece 7 is stopped and removed from the chuck 6. This completes one cycle of the process. Then repeat this operation. In this way, as is clear from Table 0, this operating method disengages only the clutch and applies the brakes to stop the rotation of the workpiece for friction pressure, and also disengages the clutch to stop the rotation after cutting. The brake is applied by stopping only the motor without turning the motor off, and compared to the conventional driving method shown in Table 1, the number of times the clutch and motor are turned on and off is half. Therefore, the life of the clutch, motor, and the control circuit for controlling ON/OFF of the clutch and motor can be greatly extended.Moreover, the time required for the motor to start up is only during frictional rotation, and cutting It can be transferred immediately during processing, greatly improving work efficiency. Further, in the present invention, contrary to the above-described embodiments, the frictional rotation is stopped by using a control means for cutting off the input to the motor in combination with a brake means without employing a means for disengaging the clutch, thereby stopping the cutting rotation. This can be carried out by using a clutch disengagement control means and a brake means together without searching for a control means for cutting off the input to the motor, and even when carried out in this manner, the same operation and effect as in the above embodiment can be obtained. Demonstrated. As exemplified in the embodiments above, this invention stops frictional rotation by disengaging the clutch while maintaining the input to the motor, and stopping cutting rotation by cutting off the input to the motor while keeping the clutch engaged. By doing this, the life of the clutch, motor, etc. can be greatly extended, and the working efficiency can be improved. Therefore, this invention is excellent for industrial use as a method of operating a friction welding machine.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing a friction press machine, and FIGS. 2 a to 2 c are schematic front views showing a flash cutting process. Motor 1, clutch 4, processed materials 7, 7a, 7b, flash 10. Traditional 1 drawing 2 screen blinds

Claims (1)

[Claims] 1. A pair of workpieces are brought into contact with each other while applying a thrust on one axis, and one workpiece is rotated by a motor via a clutch to generate frictional heat between the opposing parts and soften the workpiece. After that, the friction welding machine rapidly stops the friction rotation and maintains the stopped state to roll the two workpieces together, and then cuts and removes the flash at the welded part while rotating the workpieces with a motor. In the operating method, the frictional rotation is stopped by using a control means for either cutting off the input to the motor or disengaging the clutch, in combination with a brake means. A method for operating a friction welding machine, characterized in that the cutting rotation is stopped by using the other of the control means for cutting off the input to the motor or for disengaging the clutch together with a brake means.