Reference repair method for large-size die

Abstract

The invention discloses a reference repair method for a large-size mold. The four reference blocks are externally attached to a first station machining area and a second station machining area of the die respectively; on the first machine tool, alignment is conducted based on the original datum plane and the original datum hole of the to-be-repaired mold; after alignment, the middle of the two original datum holes in the machining area of the first station serves as the original point of a machining coordinate system, conversion datum holes are machined in the two datum blocks in the machining area of the second station, the top faces of the four datum blocks are milled into conversion datum faces, and the coordinate positions of the conversion datum holes are recorded; the to-be-repaired mold is transferred to a second machine tool to level and convert the datum plane; the original datum hole of the first station machining area is aligned and centered to serve as the original point of a machining coordinate system for machining of the first station machining area; after machining is completed, the mold is rotated by 180 degrees; leveling a conversion reference surface; and after leveling, the coordinate position of the conversion datum hole is input into a second machine tool, and a machining coordinate system of a second machining area of the station is constructed. According to the invention, the reference alignment is more accurate, and the safety of mold repair is improved.

Description

Technical Field

[0001] The invention relates to the technical field of large-scale mold manufacturing and repair, and in particular to a reference repair method for a large-size mold. Background Art

[0002] In order to make a certain type of mold usable in a new etching machine, it needs to be repaired. The original method was to stick six reference blocks on the upper surface of the mold flange, use the original reference for alignment on machine tool No. 1, and then process the upper surface and side of the reference block as the repair reference for machine tool No. 2. However, when machine tool No. 1 was processing the reference, there was interference between the spindle and the mold surface. At this time, it could only be processed at an angle, but the surface quality of the reference processed in this way was poor, which affected the repair quality of machine tool No. 2. In the process of aligning the reference block on machine tool No. 2, the spindle and the mold surface were too close, and two people were required to cooperate for alignment. And because of the poor quality of the alignment reference processing, the new reference processed could not meet the outline requirements, the three-coordinate measurement was unqualified, and repeated processing was required, and the repair time was long. Summary of the invention

[0003] The purpose of the present invention is to provide a benchmark repair method for large-size molds. The benchmark alignment of the present invention is more accurate, which increases the safety and quality stability of mold repair and ensures the use of new etching machine tools.

[0004] Technical solution: A method for reworking a large-size mold, comprising the following steps:

[0005] S1. Four reference blocks are attached around the mold to be repaired; two of the reference blocks are located in the processing area of ​​the station 1 of the mold to be repaired, and two reference blocks are located in the processing area of ​​the station 2 of the mold to be repaired;

[0006] S2. On machine tool No. 1, perform alignment based on the original reference surface and original reference hole of the mold to be repaired; after alignment, take the middle of the two original reference holes in the processing area of ​​station 1 on the mold to be repaired as the origin of the processing coordinate system, and process a conversion reference hole on each of the two reference blocks in the processing area of ​​station 2, and at the same time, mill the top surfaces of the four reference blocks to the same plane to form a conversion reference surface, and record the coordinate positions of the two conversion reference holes;

[0007] S3. Transfer the mold to be repaired to the No. 2 machine tool; swing the A-axis of the No. 2 machine tool to a preset angle, and use the A-axis to level the conversion reference plane; after leveling, align and center the two original reference holes in the processing area of ​​the station one, and use the center position as the origin of the processing coordinate system to perform repair processing in the processing area of ​​the station one;

[0008] S4. After the processing of the processing area of ​​station one is completed, the mold is rotated 180 degrees; the A-axis of the second machine tool is swung to a preset angle, and the A-axis is used to level the conversion reference surface; after leveling, the coordinate positions of the two conversion reference holes recorded in step S2 are input into the second machine tool, and the processing coordinate system of the processing area of ​​station two is constructed based on the coordinate positions to complete the rework processing of the processing area of ​​station two.

[0009] In the aforementioned large-size mold benchmark repair method, in step S1, the benchmark block is an aluminum benchmark block.

[0010] In the aforementioned large-size mold benchmark repair method, in step S1, the benchmark block is a copper benchmark block.

[0011] In the aforementioned large-size mold benchmark repair method, in step S1, the benchmark block is a stainless steel benchmark block.

[0012] In the aforementioned large-size mold benchmark repair method, in step S1, the benchmark block and the mold to be repaired are bonded with glue.

[0013] In the aforementioned reference rework method for large-size molds, in step S1, the glue used is Brothers Glue.

[0014] In the aforementioned large-size mold benchmark repair method, in step S1, the benchmark block is formed into a long strip shape.

[0015] In the aforementioned reference repair method for large-size molds, in steps S2 and S3, the preset angle of the A-axis swing is 45°.

[0016] Beneficial effects: The present invention attaches four reference blocks on the outside of the mold circumference, rather than designing six reference blocks on the flange surface at the end of the mold. This method increases the safety distance between the No. 1 machine tool spindle and the mold surface (flange surface), and the processing of the reference does not require spindle deflection, and the reference processing quality is good; at the same time, by designing conversion reference holes on the two reference blocks as alignment references to replace the traditional method of using the side as the alignment reference, this method is more accurate. At the same time, this method can be used on the No. 2 machine tool to achieve one person's alignment, saving labor costs, avoiding repeated corrections to the reference, improving efficiency, and increasing the safety and quality stability of mold repair.

[0017] The present invention is mainly suitable for the repair of large-size molds when the mold has no fixed reference and the machine tool stroke is limited. The present invention can achieve precise repair, ensure the safety and quality of mold repair, save costs, and provide more thinking directions for the repair of similar molds.

[0018] The present invention can complete mold manufacturing and repair even when the machine tool stroke is insufficient, thereby reducing dependence on large machine tools, reducing repair time, and reducing costs.

[0019] The invention completes the conversion of the benchmark by using an external benchmark block, has low cost, is convenient for material acquisition, and is easy for processing.

[0020] The invention has been applied to the repair work of a certain type of mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the mold to be repaired according to the present invention. DETAILED DESCRIPTION

[0022] Example 1. A reference repair method for a large-size mold, see Figure 1 , comprising the following steps:

[0023] S1. Four reference blocks 1 are attached around the mold to be repaired; two reference blocks 1 are located in a processing area 4 of a station of the mold to be repaired, and two reference blocks 1 are located in a processing area 5 of a station of the mold to be repaired;

[0024] S2. On machine tool No. 1, alignment is performed based on the original reference surface 2 and the original reference hole 3 of the mold to be repaired; after alignment, the middle of the two original reference holes 3 in the processing area 4 of the station 1 on the mold to be repaired is used as the origin of the processing coordinate system, and a conversion reference hole 6 is processed on each of the two reference blocks 1 in the processing area 5 of the station 2, and at the same time, the top surfaces of the four reference blocks 1 are milled to the same plane to form a conversion reference surface 7, and the coordinate positions of the two conversion reference holes 6 are recorded;

[0025] S3. The mold to be repaired is transferred to the No. 2 machine tool; the A axis of the No. 2 machine tool is swung to a preset angle, and the A axis is used to level the conversion reference plane 7; after leveling, the two original reference holes 3 in the processing area of ​​the station are aligned and centered, and the center position is used as the origin of the processing coordinate system to perform repair processing in the processing area of ​​the station;

[0026] S4. After the processing of the processing area of ​​station one is completed, the mold is rotated 180 degrees; the A-axis of the second machine tool is swung to a preset angle, and the A-axis is used to level the conversion reference plane 7; after leveling, the coordinate positions of the two conversion reference holes 6 recorded in step S2 are input into the second machine tool, and the processing coordinate system of the processing area of ​​station two is constructed based on the coordinate positions to complete the rework processing of the processing area of ​​station two.

[0027] In the aforementioned step S1, the reference block 1 is an aluminum reference block, which has the rigidity of metal and is relatively soft and easy to cut.

[0028] Optionally, in step S1, the reference block 1 is a copper reference block.

[0029] Optionally, in step S1, the reference block 1 is a stainless steel reference block.

[0030] In the aforementioned step S1, the reference block 1 and the mold to be repaired are bonded together by glue.

[0031] In the aforementioned step S1, the glue used is Brothers Glue.

[0032] In the aforementioned step S1, the reference block 1 is in the shape of a long strip. The long strip structure can increase the safe distance between the spindle and the mold during reference processing to prevent tool collision.

[0033] In the aforementioned steps S2 and S3, the preset swing angle of the A-axis is 45°.

Claims

1. A reference repair method for a large-size mold, characterized in that: The steps include: S1. Four reference blocks (1) are attached around the mold to be repaired; two reference blocks (1) are located in a processing area (4) of a station of the mold to be repaired, and two reference blocks (1) are located in a processing area (5) of a station of the mold to be repaired; S2. On machine tool No. 1, alignment is performed based on the original reference surface (2) and the original reference hole (3) of the mold to be repaired; after alignment, the middle of the two original reference holes (3) in the processing area (4) of the station 1 on the mold to be repaired is used as the origin of the processing coordinate system, and a conversion reference hole (6) is processed on each of the two reference blocks (1) in the processing area (5) of the station 2, and at the same time, the top surfaces of the four reference blocks (1) are milled to the same plane to form a conversion reference surface (7), and the coordinate positions of the two conversion reference holes (6) are recorded; S3. The mold to be repaired is transferred to the second machine tool; the A axis of the second machine tool is swung to a preset angle, and the A axis is used to level the conversion reference plane (7); after leveling, the two original reference holes (3) of the processing area of ​​the station are aligned and centered, and the center position is used as the origin of the processing coordinate system to perform the repair processing of the processing area of ​​the station; S4. After the processing of the processing area of ​​station one is completed, the mold is rotated 180 degrees; the A axis of the second machine tool is swung to a preset angle, and the A axis is used to level the conversion reference surface (7); after leveling, the coordinate positions of the two conversion reference holes (6) recorded in step S2 are input into the second machine tool, and the processing coordinate system of the processing area of ​​station two is constructed based on the coordinate positions, and the rework processing of the processing area of ​​station two is completed.

2. The large-size mold benchmark repair method according to claim 1, characterized in that: In step S1, the reference block (1) is an aluminum reference block.

3. The large-size mold benchmark repair method according to claim 1, characterized in that: In step S1, the reference block (1) is a copper reference block.

4. The large-size mold benchmark repair method according to claim 1, characterized in that: In step S1, the reference block (1) is a stainless steel reference block.

5. The large-size mold benchmark repair method according to claim 1, characterized in that: In step S1, the reference block (1) and the mold to be repaired are bonded together by glue.

6. The large-size mold benchmark repair method according to claim 5, characterized in that: In step S1, the glue used is Brothers Glue.

7. The large-size mold benchmark repair method according to claim 1, characterized in that: In step S1, the reference block (1) is in the shape of a strip.

8. The large-size mold benchmark repair method according to claim 1, characterized in that: In steps S2 and S3, the preset swing angle of the A-axis is 45°.

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