JPS5822305B2 - Spring grinding/setting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a spring grinding machine that automatically supplies a coil spring to a spring holding hole of a work table and grinds both ends of the coil spring with a grindstone, which is equipped with a spring setting mechanism.・Regarding the setting machine.

In order to produce compression coil springs with good elasticity, a setting process is performed in which the coil spring is fully compressed several times to remove the temporary strain that remains in the strands and inside the coil at the time of coiling. It is necessary to perform a process to replace temporary distortion with permanent distortion.

Conventionally, a setting machine for performing this setting process has been an independent machine.

Therefore, the setting machine requires various accessory devices, such as a device for storing the spring, a feeding device for taking out the coil spring from the device and sending it to the setting location, and is quite expensive.

Therefore, in the present invention, an automatic spring feeding device is disposed above the work table of a spring grinding machine, and a spring feeding device, a spring storage device, etc. necessary for setting the coil springs sent to the work table are set. It is an object of the present invention to provide a spring setting mechanism that can be constructed at low cost by using the spring grinder also as a spring grinder.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described in detail below based on embodiments shown in the accompanying drawings.

Reference numeral 2 denotes a work table, and a worm wheel 4 is fixed to the upper middle corner of the work table, and the worm wheel 4 meshes with a worm 6.

A pulley 8 is fixed to a shaft interlocking with the worm 6, and a belt is passed between the pulley 8 and a pulley 12 fixed to an output shaft of an intermittent drive motor 10.

Reference numeral 14 denotes a pair of upper and lower rough grinding wheels (the upper one is omitted) which are rotatably disposed with the work table 2 in between, and are connected to a rotation drive device.

Reference numeral 16 designates a pair of upper and lower finishing grindstones that are rotatably disposed across the work table 2 and are connected to a rotation drive device.

18 is an automatic spring supply device that automatically supplies a coil spring to the spring holding hole 20 of the work table 2, and 22 is an automatic spring discharge device that automatically moves the coil spring downward from the spring holding hole 20 of the work table 2. be.

The spring single-movement supply device 18 and the discharge device 22 have well-known general configurations, so detailed explanations and drawings thereof will be omitted.

Reference numeral 24 denotes a hydraulic cylinder attached to a bracket fixed to the fuselage, and a suppressing plate 26 is fixed to the output shaft of the hydraulic cylinder. The projections 28, 30 are fixedly provided.

A pressure receiving table 32 is disposed below the projections 28 and 30 and located below the work table 2.

The cylinder 24, the pressing plate 26, the protrusions 28, 30, and the pressure receiving base 32 constitute a spring setting device 34.

Next, the operation of this embodiment will be explained.

The work table 2 is intermittently rotated in the direction of the arrow by the prime mover 10, and a coil spring is automatically inserted into the holding hole 20 of the work table 2 from the automatic spring supply device 18.

The coil spring is brought to the rough grinding wheel 14 by the rotation of the work table 2, where both ends of the coil spring in the holding hole 20 are ground.

First, the coil spring in the holding hole 20 is brought to the finishing grindstone 16, where both ends are polished again, and then brought to the setting device 34.

When the work table 2 is temporarily stopped during intermittent movement,
The amount of intermittent movement of the work table 2 is set appropriately so that the holding hole 20 and the protrusion 28. 24 is driven and its output shaft reciprocates one or more predetermined strokes, the protrusions 28 and 30 pressurize the coil spring in the holding hole 20, and the setting operation of the coil spring is performed.

Next, the coil spring in the holding hole 20 is inserted into the ejection device 22.
It is then brought to a location where it is dropped into a container below the work table 2.

These series of operations are automatically performed by a known sequence control means.

Furthermore, if the arm 40 that supports the hydraulic cylinder 24 is provided with a known synchronization mechanism that synchronizes the holding hole 20 of the work table 2 and the projections 28, 30, the work table 2 can be moved not only in intermittent motion but also in normal rotational motion. good.

As described above, in the present invention, the spring setting device is provided above the work table of the spring grinder, and the setting operation is performed on the coil spring held in the spring holding hole of the work table, so that the spring setting device can be set independently. This has the advantage that a spring setting machine can be provided at a much lower cost than manufacturing a spring setting machine.

[Brief explanation of the drawing]

The drawings show a preferred embodiment of the present invention, with FIG. 1 being an overall explanatory view and FIG. 2 being a sectional view of the main part. 2... Work table, 4... Worm wheel, 6... Worm, 8...
Pulley, 10...Motor, 12...Pulley, 14...Whetstone, 16...Finishing whetstone, 18...Spring automatic supply device , 20
... Spring holding hole, 22 ... Spring automatic discharge device, 24 ... Hydraulic cylinder, 26 ... Pressing plate, 28, 30 ...・Protrusion, 32... Pressure receiving stand, 34... Spring setting device.

Claims (1)

[Claims] 1. A work table 2 connected to a rotary drive device, a spring 1-movement supply device 18 that automatically supplies a coil spring to a spring holding hole 20 of the workpiece full 2, and grinding both ends of the coil spring inside the spring holding hole 20. In this apparatus, a spring setting device 34 is provided opposite to the moving path of the spring holding hole 20 of the work table 2, and the spring setting device 34 allows the spring holding hole 20 of the work table 2 to be cut. A spring grinding/setting machine characterized by setting the coil spring inside.