Cutting main roller structure of diamond wire slicing machine

Abstract

The utility model provides a cutting main roller structure of a diamond wire slicing machine, the surface of a cutting main roller is provided with an annular wire groove used for winding a diamond wire, the cross section of the wire groove comprises an arc-shaped part and a V-shaped part, and the angle of the circle center corresponding to the arc-shaped part is larger than 180 degrees. The lower ends of the two bevel edges of the V-shaped part are connected to the two ends of the notch in the upper portion of the arc-shaped part respectively. And the angle of the arc-shaped part corresponding to the circle center is 240-320 degrees. The distance of the notch in the upper end of the arc-shaped part is larger than the diameter of the diamond wire. The diamond wire is wound in the wire groove formed in the main roller, the groove bottom of the wire groove is the arc-shaped part with the central angle larger than 180 degrees, the diamond wire vibrates during cutting, friction of the diamond wire can be reduced due to the fact that the groove bottom is arc-shaped, and therefore the probability that the diamond wire is broken and jumped is reduced; economic losses caused by wire jumping and breaking are reduced, the probability of wire marks and the probability of poor TTV are reduced, the top of the wire groove is arranged to be the V-shaped part, and therefore the diamond wire can fall into the wire groove conveniently.

Description

Technical Field

[0001] This utility model relates to the technical field of silicon wafer cutting equipment, specifically to a cutting main roller structure for a diamond wire slicing machine. Background Technology

[0002] Diamond wire slicers are typically used to slice monocrystalline silicon. These slices are made by the reciprocating motion of diamond wires. Currently, diamond wire slicers are becoming increasingly efficient, and the diamond wires are becoming thinner, resulting in thinner slices. However, this has led to a continuous increase in wire breakage rates, with skipped wires accounting for over 70% of these breakages. This is mainly due to unstable winding of the diamond wire on the main roller, causing it to sway during cutting, leading to wire breakage and skipped wires. This has increased the probability of wire marks and TTV (Total Volume Transmission) abnormalities. The main roller structure designed in this invention aims to reduce wire breakage and skipped wires, while also minimizing wire sway within the main roller, thereby reducing wire mark and TTV abnormalities. Utility Model Content

[0003] In order to overcome the problems existing in the background art, this utility model provides a structure of the cutting main roller 1 of a diamond wire slicing machine, so as to solve the technical problem mentioned in the background art that the cutting process is prone to swinging, which leads to wire breakage and skipping, and increases the probability of wire marks and TTV abnormalities.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] The main cutting roller structure of the diamond wire slicing machine has an annular groove 2 for winding diamond wire on its surface. The cross-sectional shape of the groove 2 includes an arc-shaped part 21 and a V-shaped part 22. The central angle of the arc-shaped part 21 is greater than 180 degrees. The lower ends of the two inclined sides of the V-shaped part 22 are respectively connected to the two ends of the upper notch of the arc-shaped part 21.

[0006] Preferably, the arc-shaped portion 21 corresponds to a center angle of 240 degrees to 320 degrees.

[0007] Preferably, the distance of the notch at the upper end of the arc-shaped portion 21 is greater than the diameter of the diamond wire.

[0008] The beneficial effects of this utility model are as follows: The diamond wire is wound in the groove provided on the main roller. Because the bottom of the groove is an arc-shaped part with a central angle greater than 180 degrees, the vibration of the diamond wire during cutting can be reduced due to the arc-shaped bottom, thereby reducing the probability of wire breakage and skipping. This reduces economic losses caused by wire breakage and skipping, and lowers the probability of wire marks and TTV defects. The top of the groove is designed with a V-shape to facilitate the falling of the diamond wire into the groove. Attached Figure Description

[0009] Figure 1This is a three-dimensional structural diagram of the present invention.

[0010] Figure 2 This is a schematic diagram of the cross-section of the groove.

[0011] Figure 3 This is a detailed structural diagram of the groove. Detailed Implementation

[0012] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0013] like Figure 1-3 As shown, this utility model provides a cutting main roller 1 structure for a diamond wire slicing machine. The surface of the cutting main roller 1 is provided with an annular groove 2 for winding diamond wire. The cross-sectional shape of the groove 2 includes an arc-shaped portion 21 and a V-shaped portion 22. The central angle of the arc-shaped portion 21 is greater than 180 degrees. The lower ends of the two inclined sides of the V-shaped portion 22 are respectively connected to the two ends of the upper notch of the arc-shaped portion 21. When the diamond wire is installed in the groove 2, it falls from the V-shaped portion 22 at the top of the groove 2 into the bottom of the groove 2, making it easier to place the diamond wire into the groove 2. Because the bottom of the groove 2 is an arc-shaped portion 21 with a central angle greater than 180 degrees, the vibration of the diamond wire during cutting is reduced due to the arc shape of the groove bottom, thereby reducing the probability of wire breakage and skipping. This reduces economic losses caused by wire breakage and skipping, and lowers the probability of wire marks and TTV defects.

[0014] The arc-shaped portion 21 corresponds to a center angle of 240 degrees to 320 degrees.

[0015] The distance of the notch at the upper end of the arc-shaped portion 21 is larger than the diameter of the diamond wire. This facilitates the diamond wire falling entirely into the bottom of the main roller groove 2.

[0016] Work process:

[0017] When the diamond wire is installed in the wire inlet groove 2, it is dropped into the bottom of the wire groove 2 from the V-shaped part 22 at the top of the wire groove 2, which makes it easier to drop the diamond wire into the wire groove 2. Since the bottom of the wire groove 2 is an arc-shaped part 21 with a central angle greater than 180 degrees, the vibration of the diamond wire during cutting can be reduced due to the arc-shaped bottom of the groove, thereby reducing the probability of diamond wire breakage and skipping. This reduces the economic losses caused by skipping and breakage, and reduces the probability of wire marks and TTV defects.

[0018] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A structure of a main roller of a diamond wire slicer, characterized in that: The surface of a cutting main roller (1) is provided with an annular wire groove (2) for winding a diamond wire, the cross-sectional shape of the wire groove (2) comprises an arc-shaped part (21) and a V-shaped part (22), the corresponding central angle of the arc-shaped part (21) is greater than 180 degrees, and the lower ends of the two inclined sides of the V-shaped part (22) are respectively connected to the two ends of the upper notch of the arc-shaped part (21).

2. The diamond wire sawing machine cutting main roller structure according to claim 1, characterized in that: The corresponding central angle of the arc-shaped part (21) is 240-320 degrees.

3. The diamond wire sawing machine cutting main roller structure according to claim 1 or 2, characterized in that: The distance of the upper notch of the arc-shaped part (21) is greater than the diameter of the diamond wire.

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