CN104923597A - Method for rolling workpieces in upward-pressing mode - Google Patents

Abstract

The invention discloses a method for rolling workpieces in an upward-pressing mode. The method includes the following three steps that 1, the perimeter is worked out according to the rolling circle center and the radius, and a workpiece to be rolled is processed to be at the length one eighth of the perimeter with the end face of the processed end of the workpiece as the starting point and is made to be an arc of 45 degrees; 2, with the processing terminal obtained in the step 1 as a starting point, the portion of the length one eighth of the perimeter is bent by 80 degrees; and 3, the rolling radian is worked out, the difference between the rolling radian and the radian of 45 degrees is the radian of the portion to be processed, the portion obtained by bending by 80 degrees in the step 2 is bent to be an arc, and the radian of the processed arc is the radian of the portion to be processed. The steps of the method for rolling workpieces in the upward-pressing mode are simple; by realizing rolling step by step, stress generated when materials deform can be dispersed effectively, form, state and precision obtained after processing can be better guaranteed, and the method is applicable to various upward-pressing rolling modes.

Description

A kind of for realizing the method that on workpiece, pressure type volume circle is shaping

Technical field

The present invention relates to a kind of method of processing and forming, a kind of for realizing the method that on workpiece, pressure type volume circle is shaping specifically.

Background technology

Upper pressure type volume circle is molded in machined comparatively common, and general processing method can only process approximate shape, and its size of specifically rolling up toroidal and volume circle is all difficult to accurately.In the upper pressure type volume circle processing and forming of reality, the volume circle that initial manufacture obtains needs to carry out shaping processing toward contact, make it meet the needs using and design, this is just adding operating procedure virtually, and the increase of operating procedure can cause the increase of mould use amount and hand labor intensity.

Summary of the invention

The object of the present invention is to provide the method that on workpiece that a kind of versatility is good, pressure type volume circle is shaping.

For achieving the above object, the technical solution adopted in the present invention is;

For realizing the method that on workpiece, pressure type volume circle is shaping, comprise following three steps:

Step one:

To roll up the round heart and radius calculation girth, to wait that the end face of the processing end rolling up round processing work is for starting point, processes 1/8th perimeter lengths, this part is processed, it is made to be 45 degree of arcs;

Specifically, first utilize upper de-plate and lower bolster to be fixed in mould by workpiece, the 45 degree of arc processing cavitys then utilizing upper punch to coordinate with low punch to realize, the processing of 45 degree of arcs is treated in realization;

Step 2:

With the processing terminal of step one for starting point, by girth 7/8ths length bending 80 degree;

Specifically, utilize upper punch and ejection block to be operated in mould and be fixed, utilize lower forming punch to carry out Bending Processing;

Step 3:

Calculate volume circular arc degree, deduct 45 degree with this radian and obtain radian to be processed, then carry out arc fold bending processing by processing the 80 degree of dogleg section obtained through step 2, make the radian after processing be radian to be processed.；

Specifically, in utilization, de-plate, lower bolster and upper holder block workpiece pressing in mould, utilizes upper punch to carry out arc fold bending processing to 80 degree of dogleg section.

Step of the present invention is simple, and substep processing is carried out in the processing of volume circle, can effectively dispersion distortion time stress, better ensure the shape state that processing obtains and precision, be applicable to all kinds of upper pressure type and roll up round.

Accompanying drawing explanation

Fig. 1 is the structural representation that step one of the present invention adds man-hour.

Fig. 2 is the structural representation that step 2 of the present invention adds man-hour.

Fig. 3 is the structural representation that step 3 of the present invention adds man-hour.

Detailed description of the invention

For convenience of doing further understanding to the present invention, existing by reference to the accompanying drawings for an embodiment, the present invention is further illustrated.

Embodiment:

The present invention includes following three steps:

Step one:

To roll up the round heart and radius calculation girth, to wait that the end face of the processing end rolling up round processing work is for starting point, processes 1/8th perimeter lengths, this part is processed, it is made to be 45 degree of arcs;

Specifically, first utilize upper de-plate and lower bolster to be fixed in mould by workpiece, the 45 degree of arc processing cavitys then utilizing upper punch to coordinate with low punch to realize, the processing of 45 degree of arcs is treated in realization;

Step 2:

With the processing terminal of step one for starting point, by girth 7/8ths length bending 80 degree;

Specifically, utilize upper punch and ejection block to be operated in mould and be fixed, utilize lower forming punch to carry out Bending Processing;

Step 3:

Calculate volume circular arc degree, deduct 45 degree with this radian and obtain radian to be processed, then carry out arc fold bending processing by processing the 80 degree of dogleg section obtained through step 2, make the radian after processing be radian to be processed.；

Specifically, in utilization, de-plate, lower bolster and upper holder block workpiece pressing in mould, utilizes upper punch to carry out arc fold bending processing to 80 degree of dogleg section.

Above embodiment is optimal enforcement of the present invention example, not any pro forma restriction is done to the present invention, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be revised as the Equivalent embodiments of equivalent variations, but any amendment allly do not depart from the technology of the present invention methodological principle and content, doing according to technical spirit of the present invention to above embodiment, equivalent variations and correction, all still belong in the scope of the technology of the present invention method.

Claims (1)

1., for realizing the method that on workpiece, pressure type volume circle is shaping, it is characterized in that: comprise following three steps:

Step one:

To roll up the round heart and radius calculation girth, to wait that the end face of the processing end rolling up round processing work is for starting point, processes 1/8th perimeter lengths, this part is processed, it is made to be 45 degree of arcs;

Step 2:

With the processing terminal of step one for starting point, by girth 7/8ths length bending 80 degree;

Step 3:

Calculate volume circular arc degree, deduct 45 degree with this radian and obtain radian to be processed, then carry out arc fold bending processing by processing the 80 degree of dogleg section obtained through step 2, make the radian after processing be radian to be processed.