JPS641944Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an induction hardening device for workpieces such as cams.

Prior Art Workpieces such as cams have complex shapes, each with a different shape, and are heavy, so it is expensive to induction harden them all at once.

Problems to be Solved by the Invention The present invention was developed in view of the above circumstances, and its purpose is to harden a large workpiece with a complex shape like a cam by rotating it. The object of the present invention is to provide an induction hardening device that can reduce the cost required for hardening.

Means and Effects for Solving Problems The present invention includes a turntable 5 that is rotationally driven by a turntable rotation mechanism A and on which a workpiece 14 is placed, and a turntable 5 that is removably fixed to the turntable 5 and has the same shape as the workpiece 14. The gauge 12, a bogie structure B that is provided on a support so that it can reciprocate on the side of the gauge 12 and brings a tracing roller 24 into contact with the peripheral edge of the gauge 12; The workpiece 14 and the gauge 12 are rotated by the rotation of the turntable 5, and the bogie structure B is rotated by the operation of the roller 24.
The coil 38 is moved through the coil 38, and the work 14 is induction hardened by the coil 38 while maintaining a predetermined gap t between the coil 38 and the work 14.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a support frame, and a support shaft 4 is provided on a shaft support portion 2 of the support frame 1 via a bearing 3.
A turntable 5 is provided at the upper end of the support shaft 4. A is a turntable rotation mechanism, the turntable rotation mechanism A is equipped with a motor 6, the output shaft 7 of the motor 6 is connected to the input side of the transmission 8, and the output shaft 9 of the transmission 8 is connected to the The gear 10 is
It meshes with a gear 11 provided on the support shaft 4. A gauge 12 is removably attached to the turntable 5, and a workpiece 14, which is a cam, is attached onto the gauge 12 via a support member 13. The gauge 12 has the same shape as the work 14.

Reference numeral 15 denotes a machine body. The machine body 15 is provided with a guide rail 16 facing the work 14 side, and a bogie 17 of the bogie structure B is placed on the guide rail 16 via rollers 18. A bracket 19 is fixed to the rear of the body 15, and the base end of a moving cylinder 20 is fixed to the bracket 19, and the piston rod 21 of the pressing cylinder 20 is connected to a bracket 22 provided on the trolley 17. It has been done. A tracing roller 24 is provided at the tip of the truck 17 via a support member 23, and the tracing roller 24 is connected to the gauge 12.
It is in contact with the periphery of the

The upper surface of the carriage 17 is provided with supports 25, 2
6 is fixed to the supports 25 and 26.
The transformer 28 is fixed to the support shaft 27.
Bearings 29 are provided at the front and rear of the underside of the bearing 29 so as to be rotatable.

The cart 17 is provided with a tilting motor 30, and a disc 32 is fixedly attached to the output shaft 31 of the tilting motor 30. The lower end of a link 33 is attached to the disc 32 with a pin 34, and the link 33 is attached to the disc 32 with a pin 34. The upper end of 33 is attached to the side of transformer 28 by pin 35.

A support arm 36 is provided on the front side of the transformer 28, and a coil holder 37 is provided on the support arm 36.
A coil 38 is held in a coil holder 37. 39 is a handle for adjusting the angle of the coil 38.

Next, the operation will be explained.

(1) As described above, set the workpiece 14 and the gauge 12 on the turntable 5 so that they correspond to each other 1:1.

(2) Press the tracing roller 24 against the gauge 12 by operating the pressing cylinder 20. Since the profiling roller 24 and the coil 38 are integrated as described above, a constant gap t is always maintained between the workpiece 14 and the coil 38.

(3) Operate the handle 39 so that the opposing surfaces (contact surfaces) of the workpiece 14 and the coil 38 are as shown in FIG.

(4) Drive the motor 6 of the turntable rotation mechanism A to rotate the turntable 5 and rotate the gauge 12 and workpiece 14.

The trolley 17 is moved according to the shape of the gauge 12 by the tracing roller 24 in contact with the gauge 12,
Transformer 28, support arm 36, coil holder 3
The coil 38 moves through the workpiece 14 and maintains a predetermined gap t with the workpiece 14.
to face.

Since the joint between the starting point and the ending point of the coil 38 is not hardened due to the characteristics of hardening, diagonal hardening is performed near the starting point and the ending point.
This diagonal hardening is performed by driving the tilting motor 30 to rotate the disc 32 and passing it through the link 33 to the transformer 2.
8 as shown in the imaginary line in FIG.
Perform step 8 diagonally.

Workpiece 1 produced by induction hardening equipment according to the present invention
Fig. 4 shows a comparison between the quenching method No. 4 and the conventional one-shot quenching method. The workpiece is a cam with a maximum width of 2000mm and a 100mm plate width.
From FIG. 4, Costoi is 1 and Costuro is 88, which makes it possible to reduce costs.

Effects of the Invention Since the present invention is as described above, the workpiece 14 and the gauge 12 are not rotated by the rotation of the turntable 5, and the coil 38 is moved via the cart structure B by the operation of the roller 24. The workpiece 14 can be induction hardened by the coil 38 while maintaining a predetermined gap t between the coil 38 and the workpiece 14.

For this reason, it is possible to harden a large workpiece 14 with a complicated shape such as a cam by rotationally moving it, and the cost required for hardening can also be reduced.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of one embodiment of the present invention, Figure 2 is a view taken from the direction of Figure 1, Figure 3 is an explanatory diagram of the attitude of the coil relative to the workpiece, and Figure 4 is a cost comparison diagram. be. 5 is a turntable, 12 is a gauge, 14 is a workpiece, 24 is a tracing roller, and 38 is a coil.

Claims (1)

[Scope of utility model registration request] A turntable 5 is rotatably driven by a turntable rotation mechanism A and a workpiece 14 is placed thereon, and a workpiece 14 is attached to the turntable 5 in a detachable manner.
a gauge 12 having the same shape as the gauge 12, a bogie structure B that is provided on a support so as to be able to reciprocate on the side of the gauge 12 and brings a tracing roller 24 into contact with the peripheral edge of the gauge 12, and a bogie structure B that is provided on the bogie structure B that allows the tracing roller 24 to move reciprocally toward the gauge 12 side. An induction hardening device characterized by comprising a coil 38 facing the circumferential surface with a predetermined gap t.