JPH1044142A - Multiple wire saw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the highly accurate cutting work of a workpiece at various pitches into a large number of pieces by a method wherein the depth of grooves arranged by longer pitch is made shallower than that of other grooves in working part rolls, each of which has grooves made by a certain pitch and grooves made by the pitch, which is longer than the above-mentioned certain pitch. SOLUTION: Each working part roll, about which wire is wound, is made of resin material having V-shaped grooves arranged at the predetermined pitches P1 and P2. The depth of the V-shaped grooves, the pitch of which is arranged broader P2, is made to be shallower than that of other grooves. By guiding wire through grooves, the pitches between which are different from one another, a plurality of wire trains, the pitches between which are different from one another, are formed so as to press the wire trains given by the predetermined tension against a member to be worked in order to work the member to be worked through the reciprocatingly running of the wire towards the direction from a feed reel to a housing reel under the condition being supplied with abrasive grain-containing working liquid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to silicon, quartz,
The present invention relates to a multi-wire saw for performing fine-pitch precision cutting of a brittle material such as a magnetic head or precision-pitch processing of a fine pitch.

[0002]

2. Description of the Related Art A multi-wire saw for processing a large number of grooving or cutting a large number of workpieces (see FIG. 2), a wire 1 serving as a cutting tool supplied from a supply reel 13 includes: The rolls are guided by the grooves of the processing rolls 3a and 3b, are arranged in multiple rows at a predetermined pitch (not shown), and are discharged to the storage reel 15. The multi-row wire 1 is reciprocated at high speed in parallel to the workpiece 5 to press the workpiece 5 against the wire 1, and the free abrasive grains are applied to the sliding portion where the wire comes into contact with the workpiece. And a large number of grooving processes are performed. As a material of the multi-groove pulleys 3a and 3b around which the wire is wound, a resin material (e.g., ultra-high molecular weight polyethylene) which is generally easy to manufacture is used.

[0003]

When a large number of grooving or cutting processes with different pitches are to be performed on a workpiece, it is necessary to form grooves with different pitches in a roll of a processing portion. However, between the processing rolls 3a and 3b in which grooves of different pitches are formed (see FIG. 2), there is a difference in the length of one round of the wire, so that the tension of the wire becomes uneven and precise processing is performed. Can not be done. SUMMARY OF THE INVENTION An object of the present invention is to provide a multi-wire saw for cutting a workpiece in a large number at a different pitch with high precision.

[0004]

In order to achieve the above-mentioned object, the present invention provides a cutting wire, a supply reel for supplying the wire, a plurality of pulleys for guiding the wire, and a wire. Comprising a storage reel and a plurality of processing portion rolls for winding the wire, winding the wire around the processing portion roll,
Forming a plurality of wire rows for cutting, pressing the wire row given a predetermined tension against the workpiece, moving the wire from the supply reel to the storage reel while reciprocating the wire, the abrasive grains In a multi-wire saw for cutting a member to be processed while supplying a processing liquid including, when the processing portion roll has a groove formed at a certain pitch and a groove formed at a pitch longer than the pitch, they are arranged at a long pitch. The depth of the groove was made shallower than the depth of the other grooves.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A multi-wire saw for forming a large number of grooves in a workpiece or cutting a large number of workpieces comprises a wire 1 serving as a cutting tool supplied from a supply reel 13 as shown in FIG. Are guided in the grooves of the multi-groove pulleys 3a and 3b, are arranged in multiple rows at predetermined different pitches (not shown), and are discharged to the storage reel 15. The multi-row wire 1 is reciprocated at high speed in parallel to the workpiece 5, the workpiece 5 is pressed against the wire 1, and free abrasive grains are applied to a sliding portion where the wire comes into contact with the workpiece. And a large number of grooving processes are performed.

Processing part rolls 3a and 3 for winding a wire used in the multi-wire saw according to the present invention.
The configuration of b will be described with reference to FIG. FIG. 1A is a schematic view of a processing section roll according to the present invention. FIG. 1B is a partially enlarged view of the working rolls 3a and 3b. Work rolls 3a and 3b around which wire 1 is wound
In the figure, a V-shaped groove is provided in a resin material at predetermined pitches P1 and P2. The V-shaped groove has a wide pitch width (P2)
The arranged grooves are shallower than the other grooves. The following problem can be solved by making the V-shaped groove arranged with a large pitch width (P2) shallower than the other grooves. That is, in order to perform a large number of grooving processes or cutting processes on the workpiece to be processed, grooves having different pitches are formed in the processing portion rolls 3a and 3b of the wire saw, and the pitches of the processing portion rolls 3a and 3b are formed. Guide the wires in different grooves, form a plurality of wire rows with different pitches, press the wire row with a predetermined tension against the workpiece, and move the wires back and forth from the supply reel to the storage reel. It is necessary to process the member to be processed while supplying the processing liquid containing the abrasive grains by moving the workpiece in the direction of. However, grooves having different pitches are formed in the processing part rolls 3a and 3b of the wire saw, and the processing part rolls 3a and 3b are formed.
When a plurality of wire rows with different pitches are formed by guiding the wires with grooves having different pitches b, the length of the wire row that goes around the processing part roll 3a and the processing part roll 3b varies, and the rotation of the processing part rolls Therefore, there is a problem to be solved in which the amount of movement of the wire becomes non-uniform, and the tension of each wire row becomes non-uniform. The above-mentioned problem, that is, when the tension of each of the wire arrays becomes uneven, as a result, it becomes impossible to perform cutting with different pitches with high precision. In the production of the processing part roll, the processing part is mounted on a rotating device such as a lathe, and the groove is formed in the resin material part by cutting with a cutting tool such as a cutting tool.

The wire 1 supplied from the supply reel 13
(See FIGS. 2 and 1) are installed in parallel, facing each other.
It is guided and wound around the processing part rolls 3a and 3b,
It is collected on the storage reel 15.

[0008]

As described above, according to the present invention, cutting with different pitches can be performed with high precision.

[Brief description of the drawings]

FIG. 1 is a front view showing a schematic configuration of a processing section roll used in the present invention.

FIG. 2 is a front view showing a schematic configuration of a multi-wire saw according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wire 3a, 3b Processing part roll 5 Workpiece 11 Vertical mechanism 13 Supply reel 15 Storage reel

Claims (1)

[Claims] 1. A cutting wire, a supply reel for supplying the wire, a plurality of pulleys for guiding the wire, a storage reel for winding the wire, and a plurality of processes for winding the wire. Comprising a part roll, winding the wire around the groove of the processing part roll, forming a plurality of wire rows for cutting, pressing the wire row given a predetermined tension against the workpiece,
In a multi-wire saw for moving a wire from a supply reel to a storage reel while reciprocatingly traveling and cutting a workpiece while supplying a processing liquid containing abrasive grains, the processing part roll was formed at a certain pitch. A multi-wire saw having a groove and a groove formed at a pitch longer than the pitch, wherein the depth of the grooves arranged at the long pitch is made shallower than the depths of the other grooves.