JPH0191925A - thread rolling machine - Google Patents

Abstract

PURPOSE:To evade a phase aligning work generated on each rearrangement and the variance in quality accompanied thereby by providing the scale for setting a phase for alinging the phase of two rolling rollers to the roller fitting shaft for rolling. CONSTITUTION:The rolling roller 4 fitted to two parallel shafts 2, 3 with a key is rotated by a driving device 5 and the thread forming of a work 1 is executed by inserting the work 1 between the rolling rollers 4. The value of the scale of the optimum thread rolling position 11 is read in advance before and behind the clutch 7 of the shaft 2 for fixing the rolling roller with the clutch 7. In case of using again the roller 4 in pair, after fitting the roller 4 to the shafts 2, 3 the scale of the pulley 8 with a fixed scale is set to the value of the thread rolling position 11 read in advance. Due to the roller 4 position always being at the determined position with this set only, the quality of the rolled thread can be made constant and the time in positioning the roller 4 can be shortened as well.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the field of machining, and more particularly to improving the quality and setup of thread rolling.

[Conventional technology]

2. Description of the Related Art Conventionally, a thread rolling machine is known that manufactures screws by inserting a screw-shaped roller round rod and plastically deforming the round rod. This device is described, for example, in the catalog of a fully hydraulic rolling machine called FA-150 manufactured by Nitsuse Corporation.

[Problem that the invention seeks to solve]

The above-mentioned conventional technology does not take into consideration the thread quality and shortening of the setup time when changing the setup of the thread rolling machine, and the operator has to adjust the phase of the two thread rolling rollers every time the setup is changed. Each time the setup is changed, 1) the thread quality varies (especially when the operator changes); and 1) the same phasing work is required every time. was there.

An object of the present invention is to eliminate phase alignment work that occurs every time a setup is changed and to eliminate variations in quality caused by this work.

[Means for solving problems]

The purpose of the above is to clarify the phase position at which the paired thread rolling rollers perform normal thread rolling at each busy time, and adjust the phase of the thread rolling rollers to a predetermined value every time the setup is changed. This is achieved by:

[Effect]

The thread rolling rollers are mounted on two parallel keyed shafts. In order to match the phase of each rolling roller, 2
One of the shafts has a clutch in the middle, and by releasing this clutch, the position of the roller fixed with a key in the rotational direction can be shifted.

A pulley with a fixed scale and a pulley with a marking for reading the scale are installed before and after this clutch.A pair of rollers is installed, the optimum thread rolling position is determined, and the position is read from the scale on the pulley. When using this pair of rollers again, the optimal thread rolling position (phase) can be determined by simply setting the initially read value on the calibrated pulley.

As a result, the position of the rolling roller is always at a fixed position, so the quality of the four threads produced is constant. In addition, the working time for positioning the rolling roller can be shortened.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in Section 1. This will be explained with reference to FIG.

To thread-form the workpiece 1, a rolling roller 4 attached to two parallel keyed shafts 2 and 3 is rotated by a roller drive device 5, and the workpiece 1 is inserted between the rolling rollers 4. It is done by In order to properly form a thread, it is necessary to align the phases of each pair of rolling rollers 3. Therefore, after setting the rollers 4 on the shafts 2 and 3, trial machining is performed and the step 6 (deviation of the threads) formed on the threads shown in FIG. 3 is checked. The clutch 7 is loosened by this difference, the rolling roller 4 is rotated, and the phase is adjusted.

This operation is repeated to determine the optimum thread rolling position (roller phase).

In the present invention, a pulley 8 with a fixed scale and an interlocking pulley 9 are installed before and after the clutch 7 of the rolling roller IN regular shaft 2 with the clutch 7 so that this state of matching phases can always be reproduced. Fix each.

Read the value on the scale at the optimum thread rolling position 11 for each pair of rollers (If you want to use this pair of rollers again, after installing roller 4 on shafts 2 and 3, It is sufficient to simply adjust the scale of the pulley 8 to the value of the optimal thread rolling position 11 read in advance.

According to this embodiment, the quality of the rolled screw is always constant at +C, and at the same time, the working time for positioning the rolling roller can be shortened.

〔Effect of the invention〕

According to the present invention, by simply aligning the phases of the pair of rolling rollers once, even an unskilled person can change the setup with stable quality in a short time from the second time onward. Also, a test piece for phase alignment is not required.

[Brief explanation of the drawing]

Fig. 1 is a half-sectional view of a thread rolling roller and one-touch positioning mechanism according to an embodiment of the present invention, Fig. 2 is an overall configuration diagram of the equipment,
FIG. 3 is a schematic diagram of a processing state using rolling rollers that are out of phase. 8...Pulley with fixed scale, 9...Pulley with phase mark.

Claims (1)

[Claims] A thread rolling machine consisting of one or two rolling rollers and a roller drive motor is characterized by having a phase setting scale on the rolling roller attachment shaft in order to match the phase of the two rolling rollers. Thread rolling machine.