A positioning method for a precise positioning device for a latent glue port in EDM spark machining

Abstract

The invention discloses a positioning method for a precise positioning device for processing a latent glue port by an EDM spark machine. The distance between the number of hits of a hole-making needle at A and the number of hits at B on a rectangular parallelepiped mold along the X-axis direction is divided by 2 to obtain data of a center line H of the rectangular parallelepiped mold along the X-axis direction; the distance between the number of hits of a hole-making needle at C and the number of hits at D on a cylindrical positioning part along the Y-axis direction is divided by 2 to obtain data of the center of the cylindrical positioning part in the Y-axis direction; after the data of the needle tip of the hole-making needle directly above the cylindrical positioning part along the X-axis, or the Y-axis, or the Z-axis direction simultaneously meet standards, the position data of the needle tip of the hole-making needle found at this time is set as a reference point; the needle tip reference point can be accurately and quickly positioned to avoid errors, and an oblique latent glue port that fully meets the set standards can be obtained in one processing, thereby avoiding later trimming and improving work efficiency.

Description

Technical Field

[0001] The invention relates to a mold manufacturing technology, in particular to a positioning method for a latent glue port precision positioning device processed by an EDM spark machine. Background Art

[0002] At present, when processing an oblique latent glue port on a mold, the mold is first tilted, and then the tip of the hole-making needle is moved to the center of the upper edge of the mold by visual observation, and then positioned as a reference point. There is usually an error when viewed with the naked eye, resulting in an error in the processed oblique latent glue port, which does not meet the requirements. The oblique latent glue port needs to be trimmed again to meet the set standards. The existing method has low work efficiency, small product output, and the processed oblique latent glue port is inaccurate. How to accurately process the oblique latent glue port, improve work efficiency, and increase product output has become a technical problem that has been difficult to solve for a long time.

[0003] In view of the above reasons, a positioning method for a precise positioning device of a latent glue port in EDM spark machining is developed. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a positioning method for an EDM spark machine processing latent glue port precise positioning device. Compared with the existing method of positioning the needle tip reference point by naked eyes, the present invention can accurately and quickly locate the needle tip reference point to avoid errors. The reference point has no errors and is very accurate, so the processed oblique latent glue port is also very accurate and has no errors. A very perfect oblique latent glue port that fully meets the set standards can be obtained in one processing, avoiding later trimming, improving low work efficiency, and also increasing product output, thereby improving the regular efficiency of the enterprise and increasing the labor income of the workers.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a positioning method for a precise positioning device for a latent glue port in an EDM spark machine,

[0006] The first step is to clamp the cylindrical positioning piece on the edge above the processing surface of the rectangular mold. When processing multiple oblique latent glue ports on the rectangular mold, fix the rectangular mold on the angle adjustment tool. The adjustment angle of the rectangular mold should make the central axis of the latent glue port perpendicular to the horizontal plane, the edge and the extension line of the edge are the X-axis, the horizontal direction is the Y-axis, and the longitudinal axis perpendicular to the Y-axis is the Z-axis;

[0007] In the second step, the hole-making needle of the EDM spark machine is first moved to the long side of one side of the rectangular parallelepiped mold, so that the position after the hole-making needle contacts the long side of one side of the rectangular parallelepiped mold is A, and the number of collisions at A is displayed on the data display screen of the EDM spark machine. Then the hole-making needle of the EDM spark machine is moved to the long side of the other side of the rectangular parallelepiped mold, so that the position after the hole-making needle contacts the long side of the other side of the rectangular parallelepiped mold is B, and the number of collisions at B is displayed on the data display screen of the EDM spark machine. The number of collisions at A and B are both the number of collisions along the X-axis direction. The distance between the number of collisions at A and the number of collisions at B along the X-axis direction is divided by 2 to obtain the data of the center line H of the rectangular parallelepiped mold along the X-axis direction, that is, the data at the intersection of the surface to be processed of the rectangular parallelepiped mold parallel to the X-axis direction and the H line are consistent in the X-axis direction;

[0008] The third step is to move the hole-making needle of the EDM spark machine to one side of the circumference of the cylindrical positioning part above the rectangular parallelepiped mold, so that the position after the hole-making needle contacts the one side of the circumference of the cylindrical positioning part is C, and the number of collisions at C is displayed on the data display screen of the EDM spark machine. Then, move the hole-making needle of the EDM spark machine to the other side of the circumference of the cylindrical positioning part, so that the position after the hole-making needle contacts the other side of the circumference of the cylindrical positioning part is D, and the number of collisions at D is displayed on the data display screen of the EDM spark machine. The number of collisions at C and the number of collisions at D are both the number of collisions along the Y-axis direction, and the distance between the number of collisions at C and the number of collisions at D along the Y-axis direction is divided by 2 to obtain the data of the center of the cylindrical positioning part in the Y-axis direction, and the radius of the cylindrical positioning part is displayed on the data display screen;

[0009] The fourth step is to move the hole-making needle of the EDM spark machine to the position E just above the cylindrical positioning piece at the center of the edge, and move the tip of the hole-making needle along the X-axis, or the Y-axis, or the Z-axis direction so that the tip of the hole-making needle is located at the highest point of the cylindrical positioning piece. At this time, the distance from the tip of the needle to the center of the cylindrical positioning piece along the Z-axis direction is equal to the radius of the cylindrical positioning piece.

[0010] The data obtained by subtracting the radius of the cylindrical positioning part from the data of the needle tip along the Z axis direction is equal to the data of the intersection of the X axis direction and the H line in the second step in the X axis direction, which means that the data obtained by subtracting the radius of the cylindrical positioning part from the data of the needle tip along the Z axis direction is located at the center of the edge;

[0011] The data obtained by subtracting the radius of the cylindrical positioning part from the data of the needle tip along the Z-axis direction is also required to be equal to the data of the center of the cylindrical positioning part in the third step in the Y-axis direction;

[0012] The above data are displayed on the data display screen of the EDM spark machine. When the needle tip moves, the data in the X-axis, Y-axis, or Z-axis direction of the needle tip changes synchronously;

[0013] When the data of the tip of the hole-making needle along the X-axis, Y-axis, or Z-axis direction simultaneously meet the above standards, the position data of the tip of the hole-making needle found at this time is set as the reference point;

[0014] The fifth step is to move the tip of the hole-making needle at the E position along the Y-axis direction and the X-axis direction, so that the tip of the hole-making needle moves from the reference point to the top of the oblique latent glue port, and the downward movement line of the tip of the hole-making needle along the Z-axis direction coincides with the center axis of the latent glue port. When the tip of the hole-making needle moves downward along the Z-axis direction to contact the center surface of the latent glue port to be processed in the rectangular mold, according to the processing depth of the latent glue port, the tip of the hole-making needle continues to discharge downward along the Z-axis direction to process the latent glue port;

[0015] When the next oblique latent glue opening is to be processed, the numerical control system of the EDM spark machine first controls the needle tip of the hole needle to automatically return to the reference point, and then processes the next oblique latent glue opening according to the above operation steps; the central axes of the above multiple oblique latent glue openings must be parallel to each other;

[0016] If the angles of multiple oblique latent glue openings on the rectangular mold are different, that is, the central axes of the multiple oblique latent glue openings are not parallel to each other, the reference point must be repositioned according to the above steps before processing each oblique latent glue opening.

[0017] The EDM spark machine processing latent glue port precise positioning device is composed of: a cylindrical positioning piece, a central cavity, a positioning surface, a blind hole, and a magnet; a notch is provided on one side of the cylindrical positioning piece, the cross section of the notch is one quarter of the cross section of the cylindrical positioning piece, two positioning surfaces in the notch are perpendicular to each other, at least two blind holes are evenly distributed on the positioning surface, the blind holes are fixedly filled with magnets, and a cylindrical central cavity is provided in the cylindrical positioning piece along the central axis;

[0018] The two mutually perpendicular positioning surfaces in the notch are in close contact with the two adjacent surfaces of the edge of the rectangular parallelepiped mold. At this time, the edge above the processing surface of the rectangular parallelepiped mold enters the central cavity, and the edge coincides with the center axis of the cylindrical positioning piece. The magnets in the two positioning surfaces are tightly attracted to the two adjacent surfaces of the edge to firmly fix the cylindrical positioning piece.

[0019] The cylindrical positioning piece is made of iron.

[0020] The diameter of the cylindrical positioning piece is 15-35 mm.

[0021] The diameter of the central cavity is 0.5-1.5 mm.

[0022] The beneficial effects of the present invention are: compared with the existing method of locating the needle tip reference point by naked eye, the main purpose of the present invention is to achieve accurate and rapid positioning of the needle tip reference point to avoid errors. The central cavity can make the edges of the mold accurately located on the center axis of the cylindrical locating part. If there is no central cavity but only two mutually perpendicular positioning surfaces in the notch, the intersection line of the two positioning surfaces will have errors, making it impossible for the edges of the mold to be accurately located on the center axis of the cylindrical locating part. When adjusting the mobile hole-making needle, you only need to watch the data changes of the needle tip on the data display screen of the EDM spark machine. When the needle tip is close to the reference point, you can fine-tune the data in the X-axis, Y-axis, or Z-axis direction of the needle tip to quickly and accurately find the reference point and position the needle tip. Since the reference point for needle tip positioning is not seen by the naked eye, but is measured through the data on the data display screen of the EDM spark machine, this reference point has no error and is very accurate. Therefore, the processed oblique latent glue port is also very accurate and has no error. A single processing can obtain a very perfect oblique latent glue port that fully meets the set standards, avoiding later trimming, improving work efficiency, and also increasing product output, thereby improving the company's regular efficiency and increasing workers' labor income. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings:

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure when the tip of the hole-making needle is located at various parts of the rectangular parallelepiped mold in the process of searching for the reference point;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure when the cylindrical positioning piece is stuck on the edge of the rectangular parallelepiped mold after the angle of the rectangular parallelepiped mold is adjusted;

[0026] Figure 3 It is a three-dimensional structural diagram of the precise positioning device for the latent glue port in EDM spark machine processing;

[0027] Figure 1 , 2 , 3: cylindrical positioning part 1, central cavity 2, positioning surface 3, blind hole 4, magnet 5, mold 6, latent glue port 7, edge 8. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with embodiments and specific implementation modes:

[0029] Example 1

[0030] The first step is to clamp the cylindrical positioning piece 1 on the edge 8 above the processing surface of the rectangular mold 6. When processing multiple oblique latent glue openings 7 on the rectangular mold 6, fix the rectangular mold 6 on the angle adjustment tool. The adjustment angle of the rectangular mold 6 is to make the central axis of the latent glue opening 7 perpendicular to the horizontal plane, the edge 8 and the extension line of the edge 8 are the X-axis, the horizontal direction is the Y-axis, and the longitudinal axis perpendicular to the Y-axis direction is the Z-axis;

[0031] In the second step, the hole-making needle of the EDM spark machine is first moved to the long side of one side of the rectangular parallelepiped mold 6, so that the position after the hole-making needle contacts the long side of one side of the rectangular parallelepiped mold 6 is A, and the number of collisions at A is displayed on the data display screen of the EDM spark machine at this time, and then the hole-making needle of the EDM spark machine is moved to the long side of the other side of the rectangular parallelepiped mold 6, so that the position after the hole-making needle contacts the long side of the other side of the rectangular parallelepiped mold 6 is B, and the number of collisions at B is displayed on the data display screen of the EDM spark machine at this time, the number of collisions at A and the number of collisions at B are both the number of collisions along the X-axis direction, and the distance between the number of collisions at A and the number of collisions at B along the X-axis direction is divided by 2 to obtain the data of the center line H of the rectangular parallelepiped mold 6 along the X-axis direction, that is, the data at the intersection of the surface to be processed of the rectangular parallelepiped mold 6 parallel to the X-axis direction and the H line are consistent in the X-axis direction;

[0032] The third step is to move the hole-making needle of the EDM spark machine to one side of the circumference of the cylindrical positioning member 1 above the rectangular parallelepiped mold 6, so that the position after the hole-making needle contacts the one side of the circumference of the cylindrical positioning member 1 is C, and the number of collisions at C is displayed on the data display screen of the EDM spark machine. Then, move the hole-making needle of the EDM spark machine to the other side of the circumference of the cylindrical positioning member 1, so that the position after the hole-making needle contacts the other side of the circumference of the cylindrical positioning member 1 is D, and the number of collisions at D is displayed on the data display screen of the EDM spark machine. The number of collisions at C and the number of collisions at D are both the number of collisions along the Y-axis direction, and the distance between the number of collisions at C and the number of collisions at D along the Y-axis direction is divided by 2 to obtain the data of the center of the cylindrical positioning member 1 in the Y-axis direction, and the radius of the cylindrical positioning member 1 is displayed on the data display screen;

[0033] The fourth step is to move the hole-making needle of the EDM spark machine to the position E just above the cylindrical positioning piece 1 at the center of the edge 8, and move the tip of the hole-making needle along the X-axis, or the Y-axis, or the Z-axis direction so that the tip of the hole-making needle is located at the highest point of the cylindrical positioning piece 1. At this time, the distance from the tip of the needle to the center of the cylindrical positioning piece 1 along the Z-axis direction is equal to the radius of the cylindrical positioning piece 1.

[0034] The data obtained by subtracting the radius of the cylindrical positioning member 1 from the data of the needle tip along the Z axis direction is equal to the data of the intersection of the X axis direction and the H line in the second step in the X axis direction, indicating that the data obtained by subtracting the radius of the cylindrical positioning member 1 from the data of the needle tip along the Z axis direction is located at the center of the edge 8;

[0035] The data obtained by subtracting the radius of the cylindrical positioning member 1 from the data of the needle tip along the Z-axis direction is also required to be equal to the data of the center of the cylindrical positioning member 1 in the third step in the Y-axis direction;

[0036] The above data are displayed on the data display screen of the EDM spark machine. When the needle tip moves, the data in the X-axis, Y-axis, or Z-axis direction of the needle tip changes synchronously;

[0037] When the data of the tip of the hole-making needle along the X-axis, Y-axis, or Z-axis direction simultaneously meet the above standards, the position data of the tip of the hole-making needle found at this time is set as the reference point;

[0038] The fifth step is to move the tip of the hole-making needle at the E position along the Y-axis direction and the X-axis direction, so that the tip of the hole-making needle moves from the reference point to the top of the oblique latent glue opening 7, and the line of the tip of the hole-making needle moving downward along the Z-axis direction coincides with the center axis of the latent glue opening 7. When the tip of the hole-making needle moves downward along the Z-axis direction to contact the center surface of the latent glue opening 7 to be processed by the rectangular mold 6, according to the processing depth of the latent glue opening 7, the tip of the hole-making needle continues to discharge downward along the Z-axis direction to form the latent glue opening 7;

[0039] When the next oblique latent glue opening 7 is to be processed, the numerical control system of the EDM spark machine first controls the needle tip of the hole making needle to automatically return to the reference point, and then processes the next oblique latent glue opening 7 according to the above operation steps; the central axes of the above multiple oblique latent glue openings 7 are parallel to each other;

[0040] If the angles of the multiple oblique latent glue openings 7 on the rectangular parallelepiped mold 6 are different, that is, the central axes of the multiple oblique latent glue openings 7 are not parallel to each other, the reference point must be repositioned according to the above steps before processing each oblique latent glue opening 7.

[0041] Example 2

[0042] A positioning method for an EDM spark machine processing latent glue port precise positioning device, the EDM spark machine processing latent glue port precise positioning device is composed of: a cylindrical positioning piece 1, a central cavity 2, a positioning surface 3, a blind hole 4, and a magnet 5; a notch is provided on one side of the cylindrical positioning piece 1, the cross section of the notch is one quarter of the cross section of the cylindrical positioning piece 1, two positioning surfaces 3 in the notch are perpendicular to each other, at least two blind holes 4 are evenly distributed on the positioning surface 3, the blind holes 4 are fixedly filled with magnets 5, and a cylindrical central cavity 2 is arranged in the cylindrical positioning piece 1 along the central axis;

[0043] The two mutually perpendicular positioning surfaces 3 in the notch are in close contact with the two adjacent surfaces of the edge 8 of the rectangular parallelepiped mold 6. At this time, the edge 8 above the processing surface of the rectangular parallelepiped mold 6 enters the central cavity 2, and the edge 8 coincides with the center axis of the cylindrical positioning piece 1. The magnets in the two positioning surfaces 3 are tightly attracted to the two adjacent surfaces of the edge 8 to firmly fix the cylindrical positioning piece 1.

[0044] Example 3

[0045] The cylindrical positioning member 1 is made of iron.

[0046] Example 4

[0047] The diameter of the cylindrical positioning member 1 is 15-35 mm.

[0048] Example 5

[0049] The diameter of the central cavity 2 is 0.5-1.5 mm.

Claims

1. A positioning method for a precise positioning device for a latent glue port in an EDM spark machine, characterized in that: The first step is to clamp the cylindrical positioning piece (1) on the edge (8) above the processing surface of the rectangular parallelepiped mold (6). When processing multiple oblique latent glue openings (7) on the rectangular parallelepiped mold (6), fix the rectangular parallelepiped mold (6) on the angle adjustment tool. The adjustment angle of the rectangular parallelepiped mold (6) is to make the central axis of the latent glue opening (7) perpendicular to the horizontal plane, the edge (8) and the extension line of the edge (8) are the X-axis, the horizontal direction is the Y-axis, and the longitudinal axis perpendicular to the Y-axis direction is the Z-axis; In the second step, the hole-making needle of the EDM spark machine is first moved to the long side of one side of the rectangular mold (6), so that the position after the hole-making needle contacts the long side of one side of the rectangular mold (6) is A, and the number of collisions at A is displayed on the data display screen of the EDM spark machine. Then, the hole-making needle of the EDM spark machine is moved to the long side of the other side of the rectangular mold (6), so that the position after the hole-making needle contacts the long side of the other side of the rectangular mold (6) is B, and the number of collisions at B is displayed on the data display screen of the EDM spark machine. The number of collisions at A and the number of collisions at B are both the number of collisions along the X-axis direction. The distance between the number of collisions at A and the number of collisions at B along the X-axis direction is divided by 2 to obtain the data of the center line H of the rectangular mold (6) along the X-axis direction, that is, the data at the intersection of the surface to be processed of the rectangular mold (6) parallel to the X-axis direction and the H line are consistent in the X-axis direction; In the third step, the hole-making needle of the EDM spark machine is moved to one side of the circumference of the cylindrical positioning member (1) above the rectangular parallelepiped mold (6), so that the position after the hole-making needle contacts the one side of the circumference of the cylindrical positioning member (1) is C, and the number of collisions at C is displayed on the data display screen of the EDM spark machine. Then, the hole-making needle of the EDM spark machine is moved to the other side of the circumference of the cylindrical positioning member (1), so that the position after the hole-making needle contacts the other side of the circumference of the cylindrical positioning member (1) is D, and the number of collisions at D is displayed on the data display screen of the EDM spark machine. The number of collisions at C and the number of collisions at D are both the number of collisions along the Y-axis direction. The distance between the number of collisions at C and the number of collisions at D along the Y-axis direction is divided by 2 to obtain the data of the center of the cylindrical positioning member (1) in the Y-axis direction, and the radius of the cylindrical positioning member (1) is displayed on the data display screen; The fourth step is to move the hole-making needle of the EDM spark machine to the position E just above the cylindrical positioning piece (1) at the center of the edge (8), and move the tip of the hole-making needle along the X-axis, or the Y-axis, or the Z-axis direction so that the tip of the hole-making needle is located at the highest point of the cylindrical positioning piece (1). At this time, the distance from the tip of the hole-making needle to the center of the cylindrical positioning piece (1) along the Z-axis direction is equal to the radius of the cylindrical positioning piece (1); The data obtained by subtracting the radius of the cylindrical positioning member (1) from the data of the needle tip along the Z axis direction is equal to the data of the intersection of the X axis direction and the H line in the second step in the X axis direction, indicating that the data obtained by subtracting the radius of the cylindrical positioning member (1) from the data of the needle tip along the Z axis direction is located at the center of the edge (8); The data obtained by subtracting the radius of the cylindrical positioning member (1) from the data of the needle tip along the Z-axis direction is also required to be equal to the data of the center of the cylindrical positioning member (1) in the third step in the Y-axis direction; The above data are displayed on the data display screen of the EDM spark machine. When the needle tip moves, the data in the X-axis, Y-axis, or Z-axis direction of the needle tip changes synchronously; When the data of the tip of the hole-making needle along the X-axis, Y-axis, or Z-axis direction simultaneously meet the above standards, the position data of the tip of the hole-making needle found at this time is set as the reference point; The fifth step is to move the tip of the hole-making needle at the E position along the Y-axis direction and the X-axis direction, so that the tip of the hole-making needle moves from the reference point to the top of the oblique latent glue opening (7), and the line of the tip of the hole-making needle moving downward along the Z-axis direction coincides with the center axis of the latent glue opening (7). When the tip of the hole-making needle moves downward along the Z-axis direction until it contacts the center surface of the latent glue opening (7) to be processed in the rectangular mold (6), according to the processing depth of the latent glue opening (7), the tip of the hole-making needle continues to discharge downward along the Z-axis direction to form the latent glue opening (7); When the next oblique latent glue opening (7) is to be processed, the numerical control system of the EDM spark machine first controls the needle tip of the hole making needle to automatically return to the reference point, and then processes the next oblique latent glue opening (7) according to the above operation steps; the central axes of the above multiple oblique latent glue openings (7) are parallel to each other; If the angles of the multiple oblique latent glue openings (7) on the rectangular parallelepiped mold (6) are different, that is, the central axes of the multiple oblique latent glue openings (7) are not parallel to each other, the reference point must be repositioned according to the above steps before processing each oblique latent glue opening (7).

2. The positioning method of the EDM spark machine processing latent glue port precise positioning device according to claim 1, wherein the EDM spark machine processing latent glue port precise positioning device is composed of: a cylindrical positioning member (1), a central cavity (2), a positioning surface (3), a blind hole (4), and a magnet (5); characterized in that: A notch is provided on one side of the cylindrical positioning member (1), the cross section of the notch being one quarter of the cross section of the cylindrical positioning member (1), two positioning surfaces (3) in the notch being perpendicular to each other, at least two blind holes (4) being evenly distributed on the positioning surface (3), the blind holes (4) being fixedly filled with magnets (5), and a cylindrical central cavity (2) being provided in the cylindrical positioning member (1) along the central axis thereof; Two mutually perpendicular positioning surfaces (3) in the notch are closely attached to two surfaces adjacent to the edge (8) of the rectangular parallelepiped mold (6). At this time, the edge (8) above the processing surface of the rectangular parallelepiped mold (6) enters the central cavity (2), and the edge (8) coincides with the center axis of the cylindrical positioning member (1). The magnets in the two positioning surfaces (3) are tightly attracted to the two surfaces adjacent to the edge (8) so that the cylindrical positioning member (1) is firmly fixed.

3. The positioning method of the EDM spark machine processing latent glue port precise positioning device according to claim 2 is characterized by: The cylindrical positioning member (1) is made of iron.

4. The positioning method of the EDM spark machine processing latent glue port precise positioning device according to claim 2 is characterized by: The diameter of the cylindrical positioning member (1) is 15-35 mm.

5. The positioning method of the EDM spark machine processing latent glue port precise positioning device according to claim 2 is characterized by: The diameter of the central cavity (2) is 0.5-1.5 mm.

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