CN102364295A - A method for measuring the thickness of crystal ingot edge skin - Google Patents

Abstract

The invention relates to a method for measuring the thickness of a side piece of a crystal ingot, which comprises the steps that: a tool is firstly produced, two adjacent edges of the tool are provided with hems which are vertical to each other and are attached to the side pice of the crystal ingot, the tool is provided with a measurement-position mark point, a distance from the measurement-position mark point to the inner side of the hem which is attached to a benchmark bottom surface of the side piece is 63mm, a distance from the measurement-position mark point to the inner side of the hem which is attached to the side surface of side piece is 78mm, the tool 1 is closely attached to a cutting surface of the side piece, the hems are closely attached to the benchmark bottom surface and the side surface of the side piece, the thickness of the side piece at the measurement-position mark point can be measured by utilizing a vernier caliper. Through the method, the measurement points can be simple and rapidly fixed, the error on fixing the measurement points caused by the conicity of the side piece can be avoided, and the accuracy of the measured value can be guaranteed so as to reduce the mistake judgment. The tool can be repeatedly used for a long time and is simple to operate, the measurement points can be fixed only by attaching the tool onto the surface of a work-piece.

Description

A method for measuring the thickness of crystal ingot edge skin

technical field

The invention relates to a method for measuring the thickness of a crystal ingot edge in a photovoltaic silicon ingot cutting process.

Background technique

At present, the detection of whether the square of the crystal ingot is offset is completed by measuring the thickness of the four side skins after the square is opened. The work instructions require that the side of the side skin corresponding to the bottom of the ingot be the measurement reference plane, and the X-axis 78mm and the Y-axis 63mm be the measurement points. The control range of square skin thickness is 17+/-3mm. The current measurement points are all visual, because there is a tapered surface on the edge, and the deviation of the solid measurement point seriously affects the measurement value, resulting in misjudgment of the square root offset.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method for measuring the thickness of the skin of the crystal ingot, so as to ensure that each measurement point is fixed at the position of 78 mm on the X axis and 63 mm on the Y axis as required by the work instruction.

The technical solution adopted by the present invention to solve the technical problem is: a method for measuring the thickness of the skin of an ingot. First, a tool is made, and the adjacent two sides of the tool have mutually perpendicular folds that fit the skin , set the measurement position mark point on the tooling, the distance from the measurement position mark point to the inner side of the fold that fits with the reference bottom surface of the edge is 63mm, and the distance to the inner side of the fold that fits with the side of the edge is 78mm, When using this tool to measure the edge skin thickness, you only need to put the tooling 1 close to the cut surface of the edge skin, and the folded edge is close to the reference bottom surface and side surface of the edge skin. The measurement position marks on the tool correspond to the requirements of the work instruction At the position of 78mm on the X axis and 63mm on the Y axis, use a vernier caliper to measure the thickness of the skin at the marked point of the measurement position.

The beneficial effects of the invention are: the method can simply and quickly fix the measurement point, avoid point selection errors due to the taper of the edge skin, ensure the accuracy of the measurement value, thereby reducing misjudgment. Moreover, this tool can be used repeatedly for a long time, and the operation is simple, and the point can be picked up by sticking to the surface of the workpiece.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further described;

Fig. 1 is a perspective view of the present invention;

Fig. 2 is a side view of the use state of the present invention;

Fig. 3 is a perspective view of the use state of the present invention;

In the figure, 1. tooling, 2. edges, 3. folded edges, 4. round holes, 5. sharp corners of tooling.

Detailed ways

A method for measuring the thickness of an ingot edge. Firstly, a tooling is made. The adjacent two sides of the tooling have mutually perpendicular folded edges that fit with the edge skin. Marking points for measuring positions are set on the tooling. The measuring position The distance from the marking point to the hem that is attached to the reference bottom surface of the edge is 63mm, and the distance to the edge that is attached to the side of the edge is 78mm. When using this tool to measure the thickness of the edge, you only need to use the tool 1 Close to the cutting surface of the edge skin, and the folded edge is close to the reference bottom and side of the edge skin. The measurement position marking points on the tooling correspond to the positions of 78mm on the X axis and 63mm on the Y axis as required by the work instructions. At this time, use a vernier caliper to measure The skin thickness at the marked point of the measurement position is enough.

Example:

As shown in Figures 1, 2, and 3, the tooling for positioning the measuring point of the thickness of the ingot is rectangular, with a length of 78mm and a width of 63mm. The length and width of the tooling are equal to the X-axis 78mm specified in the measurement requirements of the work instruction , Y-axis 63mm. On the adjacent two sides of the tooling 1, there is a folded edge 3 that fits with the edge skin 2. The width of the folded edge 3 is consistent with the width of the reference bottom surface of the edge skin 2, so as to avoid being lifted when it is fitted with the edge skin, so as to ensure that the tooling and the edge The leather fits perfectly. Two circular holes 4 are provided on the flange 3 on one side of the tooling 1, the purpose of which is to fix the reference plane of the tooling and avoid confusion of the X-axis and Y-axis of the design tooling. In the embodiment shown in Figures 1, 2 and 3, the circular hole is set on the folded edge 3 in the longitudinal direction, and the sharp corner 5 of the tooling opposite to the folded edge of the tooling is the measurement position marking point.

When in use, at first attach the frock 1 with the round hole 4 as the bottom surface vertically to the edge skin 2 to be measured, and the frock 1 is close to the cut surface of the edge skin, that is, the surface without taper. The effect after lamination is shown in Figures 2 and 3. It is required that the inner edge of the tooling 1 and the side skin 2 are tightly bonded. At this time, use a vernier caliper to measure the angle and align it with the sharp corner 5 of the tooling to take a reading. In order to make the measurement method more smooth, you can firstly fit the tooling 1 tightly on the edge skin 2 according to the above requirements, use a pen to trace points at the sharp corner 5 of the tooling, take off the tooling 1, and align the vernier caliper with the marked point to measure the reading.

Claims (1)

1. A method for measuring the thickness of the edge of an ingot, characterized in that: firstly a frock is made, the adjacent two sides of the frock have mutually perpendicular folded edges that fit the edge, and the measuring position is set on the frock Marking point, the distance from the measurement position marking point to the inner side of the fold that fits with the reference bottom surface of the edge is 63mm, and the distance to the inner side of the fold that fits with the side of the edge is 78mm, use this tool to measure the thickness of the edge When measuring, you only need to put the tooling 1 close to the cutting surface of the edge, and the folded edge is close to the reference bottom and side of the edge. The measurement position marks on the tooling correspond to the X-axis 78mm and Y-axis 63mm required by the work instruction. At this time, use a vernier caliper to measure the thickness of the skin at the marked point of the measurement position.

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