JPH01218721A - Spinning method for spinning machine - Google Patents

Abstract

PURPOSE:To enable correct spinning at all times by forming a standard spinning shape by a computer, storing it in a memory medium and correcting it by an NC control mechanism according to the shape of a spinning roller with the standard spinning shape as a reference on the traveling locus of the spinning roller. CONSTITUTION:A standard spinning shape is drawn by a computer 30 and also the working conditions are added, input to a storing medium IC with digital convertion and stored. The record of the storing medium IC is impressed in an NC control mechanism 20. The correction arithmetic part 23 operating the traveling locus of a spinning roller 4 is equipped with on the NC control mechanism 20. The spinning roller 4 is traveled according to the shape of the spinning roller 4 by the output from the correction arithmetic part 23. Correct spinning can thus be executed always.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a spinning machine, particularly a drawing method for a spinning machine equipped with an NC control mechanism.

[Conventional technology]

One of the above-mentioned spinning machines includes a copy drawing method using a copy template and an NC control method using an NC control mechanism to shift the drawing roller based on supplied drawing data. In the former copying drawing method, a copying template must be manufactured for each product type, which requires hardening, requires time to adjust when installing the template, and has a complex copying mechanism that makes fine adjustment difficult. There's a problem.

For this reason, recently, NC control methods have been mainly used, and one example is a method in which drawing data is input into a storage medium, this storage medium is inserted into an NC control mechanism, and drawing processing is performed based on the stored data. be.

[Problem to be solved by the invention]

In this case, the squeezing roller requires a considerable thickness in terms of strength, and the abutting surface usually has an arcuate structure □. Therefore, it is difficult to obtain a predetermined aperture shape even if a predetermined aperture shape is used as aperture data and the aperture roller is moved according to this data. For this reason, a method of repeatedly making prototypes to obtain a product with a predetermined shape has been adopted, but this method has problems such as requiring a lot of effort.

For this reason, attempts have been made to use a computer to calculate the position of the drawing mailer along a predetermined drawing shape and use this as the drawing trajectory, and perform drawing using this method, but in actual processing, it is difficult to There are differences in the radius of curvature of the surface, the mounting position, etc., and there are problems such as the need for correction.

In view of this, it is an object of the present invention to input regular aperture shape data from a storage medium to the NC control mechanism, and to perform corrections based on the aperture roller shape in the NC control mechanism.

[Means to solve the problem]

To achieve the above object, the present invention is equipped with an NC control mechanism □, and in a spinning machine that performs drawing processing using this control mechanism, a drawing shape is drawn using a computer, and the drawing process is performed using an NC control mechanism.
The stored NC data is converted into data and stored in a storage medium, and the memory of this storage medium is transmitted to the NC control mechanism, and the stored NC data is applied to the NCM control mechanism. The present invention is characterized in that it includes a correction calculation section that performs calculations, and causes the aperture roller to travel based on an output signal from the correction calculation section.

[Effect]

The correction calculation unit calculates a correction value for the aperture shape inputted from the storage medium according to the radius of curvature of the abutment surface of the aperture roller, determines the travel locus of the aperture roller, and performs the aperture processing.

〔Example〕

The figure shows an embodiment of the present invention, and FIG. 1 is an overall schematic explanatory diagram. The spinning machine 1 includes a rotating main shaft 2, a mandrel 3 attached to the rotating main shaft 2, and a drawing roller 4 for drawing a workpiece W along the mandrel 3. A tool rest 5 to which the squeeze roller 4 is attached is mounted on a carriage 6 so as to be movable back and forth in a direction perpendicular to the rotation axis of the mandrel 3, that is, in the X-axis direction. The reciprocating table 6 is placed on the mounting table 7 so as to be movable parallel to the rotation axis, that is, in the Z-axis direction. 8.9 is a drive cylinder that moves the tool rest 5 and the carriage 6 back and forth, respectively, and 10.11 is an electro-hydraulic servo valve. Reference numeral 12 and 13 are position detectors for detecting the amount of movement of the tool rest 5 and the carriage 6, and a linear scale is used, for example.

Reference numeral 20 denotes an NC control mechanism, which includes a control section 21 and an input section 22. The input unit 22 is configured to accept an IC that is a storage medium (for example, a Florapy disk, an IC card, a tape, etc.) that stores NC data.

A computer 30 inputs NC data to the storage medium I'C, and includes a computer main body 31, a keyboard section 32, and a display section 33. This computer draws a product shape or drawing shape (hereinafter referred to as drawing shape), takes into account processing conditions (spindle rotation speed, drawing roller type, etc.), converts it digitally, and inputs it to the storage medium IC.

In the present invention, the control section 21 is equipped with a correction calculation section 23, which corrects the aperture shape applied from the computer 30, and moves the aperture roller 4 based on this. 24 is a temporary storage section.

Next, the procedure for forming the transition locus of the squeezing roller 4 according to the present invention will be explained based on FIGS. 2 and 3.

FIG. 2 is an aperture diagram 4 formed by the computer 30.
It indicates 0. However, CL is the center line, and the area from point P1 to point P2 is flat and does not require drawing, and the drawing process is from point P2 to point P3. The tip of the squeezing roller 4 is normally at the timing position Pw, and during drawing, it reaches the start point Ps, moves slowly and comes into contact with the workpiece at point P4, and then reaches point P3 along the squeezing locus. , it reaches the retreat position P5 at the end of the drawing process, returns to the timing position pw, and completes one cycle.

However, this drawing diagram 40 is a locus of the contact surface of the drawing roller 4 with respect to the workpiece W, and correction is required when the drawing roller 4 moves, and this correction is performed by the correction calculation section 23. The outline is shown in Figure 3.

The aperture diagram 40 is from the aperture starting point P2 to the point a1.
Up to B is a circular arc f with radius r1 centered at l, from point a1 to point a2 is an inclined plane g having an inclination angle e, and from point a2 to point a3 is formed by a circular arc centered at B2. shall be Note that the contact surface 4a of the polyester roller 4 used is an arcuate surface with a radius R.

At the position where the squeezing roller 4 first contacts point P2,
Center point A of the contact surface 4a of the squeeze roller 4.

is on the line 41 connecting the center point B1 and point P2, and is at a distance of radius R from point P2. Further, the center point A2 of the squeeze roller 4 with respect to the point a1 is on the line 42 connecting the center point B□ and the point a1.

That is, from point P2 to al, the input radius r1 may be corrected to radius (r, +R).

Next, for the signal on the slope g, a trajectory that similarly moves from the center point A2 at an inclination angle e may be used. Further, when the squeezing roller 4 is in a position facing the point a2, the center point A3 is on the line 43 connecting the center point BI2 and the point a2, and is on (ra-R) from the center point B2.

That is, the correction calculation unit 23 calculates a radius R perpendicular to the contact point of the aperture roller 4 to the aperture shape input via the storage medium IC.
Correct by taking into account. Note that the aperture roller running locus 50 drawn by the correction is stored in the temporary storage section 24, and the next processing is performed based on a signal from the temporary storage section 24.

In addition, when correction is required for the drawing process, -time memory section 2
The numerical value stored in 4 may be corrected.

〔Effect of the invention〕

According to the present invention, the computer forms a standard aperture shape and stores it in a storage medium, and the traveling locus of the aperture roller is corrected by the NC control mechanism according to the shape of the aperture roller based on the standard aperture shape. Because of this, the standard drawing shape stored in the storage medium is saved without being corrected, so even if it is applied to each spinning machine with different drawing processing conditions, drawing processing can always be performed accurately. has.

[Brief explanation of the drawing]

FIG. 1 is an overall schematic explanatory diagram for carrying out the drawing process of a spinning machine, FIG. 2 is a drawing line diagram, and FIG. 3 is an explanatory diagram of the procedure for creating a running trajectory of the squeezing roller. 1 is a spinning machine, 4 is an aperture roller, 4a is a contact surface, 20 is an NC control mechanism, 23 is a correction calculation section, and 40 is an aperture diagram. −8=

Claims (1)

[Claims] In a spinning machine that is equipped with an NC control mechanism and performs drawing processing using this control mechanism, a drawing shape is drawn using a computer, converted to NC data, and stored in a storage medium.
The memory of this storage medium is transmitted to the NC control mechanism, the stored NC data is applied to the NC control mechanism, and the NC
1. A drawing method for a spinning machine, characterized in that the control mechanism includes a correction calculating section that calculates a running locus of the drawing roller, and the drawing roller is caused to travel based on an output signal from the correction calculating section.