Positioning device and PCB processing equipment

Abstract

The utility model belongs to the technical field of PCB positioning, and particularly relates to a positioning device and PCB processing equipment. The positioning device comprises a mounting plate, a first clamping assembly and a plurality of second clamping assemblies, and the first clamping assembly and the second clamping assemblies are mounted on the mounting plate; a first clamping groove is formed in the first clamping assembly, and the first clamping groove is used for clamping a first pin on a material plate; and each second clamping assembly is provided with a second clamping groove, the second clamping grooves extend in the first direction, the central axes of the second clamping grooves of the multiple second clamping assemblies are collinear, and the second clamping grooves are used for clamping second pins collinear with the first pins on the material plate. By arranging the second clamping grooves, the size of each second clamping groove in the first direction can be reduced, the straightness of the second clamping groove is guaranteed, the distance between the calibration piece in the first clamping groove and the calibration piece in the second clamping groove is small, the calibration difficulty can be lowered, and the problem that machining holes in a material plate are staggered is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of PCB positioning, especially relates to a positioning device and PCB processing equipment. BACKGROUND

[0002] In the manufacturing process of PCB (Printed Circuit Board), in order to improve the operation efficiency of mechanical drilling process, positioning device is often used to quickly position PCB in the industry, so as to process PCB.

[0003] The working area of the drilling machine has a mechanical zero point and an XY coordinate system. The PCB has a first pin and a second pin, the first pin is the drilling program zero point of the PCB, and the two-point line of the first pin and the second pin constitutes the Y axis, and the XY coordinate system based on the first pin and the second pin can be established. When working, the first pin is fixed at the mechanical zero point, at this time, the drilling program zero point of the PCB coincides with the mechanical zero point of the drilling machine, which makes the XY coordinate system of the PCB coincide with the XY coordinate system of the drilling machine working area, so as to realize drilling at the corresponding position.

[0004] After the drilling machine works for a long time, due to the influence of environmental temperature, vibration and other external factors, the mechanical zero point position precision and the straightness of the positioning device will change, the precision of the positioning device is difficult to guarantee, and thus the precision of the positioning device needs to be checked or re-taught regularly or when production is abnormal. However, the existing positioning device has a long structure size, so that the straightness of the positioning device cannot be guaranteed, and the current correction method is difficult, which leads to long correction time and affects production efficiency, and can cause misplacement of the processed hole and cause PCB scrap. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem that the existing positioning device is difficult to correct, and provides a positioning device and PCB processing equipment.

[0006] To solve the above technical problems, on the one hand, the utility model embodiment provides a positioning device for positioning of a material plate, the material plate includes a first pin and a second pin arranged at intervals along a first direction, and includes a mounting plate, a first clamping assembly and a plurality of second clamping assemblies, the first clamping assembly and the second clamping assembly are installed on the mounting plate.

[0007] A first clamping groove is arranged on the first clamping assembly, and the first clamping groove is used for limiting the first pin.

[0008] Each of the second clamping assemblies is provided with a second clamping groove extending along the first direction, and the first clamping groove and the second clamping grooves are located on the same straight line, and the second clamping groove is used for clamping the second pin.

[0009] Optionally, the first clamping assembly comprises a first clamping piece and a second clamping piece, and the first clamping piece is provided with a notch near one side of the second clamping piece, and the first clamping groove is formed between the notch and one end of the second clamping piece near the first clamping piece.

[0010] Optionally, the mounting plate is provided with a first accommodating groove and a second accommodating groove in communication with each other, the first clamping piece is arranged in the first accommodating groove, and the second clamping piece is movably connected in the second accommodating groove.

[0011] The first clamping groove is located at the intersection of the first accommodating groove and the second accommodating groove.

[0012] Optionally, the first clamping assembly further comprises a first driving piece, the first clamping piece is mounted on the mounting plate, an output end of the first driving piece is connected to the second clamping piece, and the first driving piece can drive the second clamping piece to move close to or away from the first clamping piece, so as to clamp or release the first pin.

[0013] Optionally, the second clamping groove is in a strip shape.

[0014] Optionally, the second clamping assembly comprises a third clamping piece and a fourth clamping piece, the third clamping piece and the fourth clamping piece are oppositely arranged along a second direction, and the second clamping groove is formed between the third clamping piece and the fourth clamping piece.

[0015] The first direction and the second direction are perpendicular to each other.

[0016] Optionally, the mounting plate is provided with a plurality of third accommodating grooves, and the plurality of second clamping assemblies and the plurality of third accommodating grooves are arranged one by one.

[0017] The third clamping piece and the fourth clamping piece are arranged in the third accommodating groove, and at least the fourth clamping piece can move along the third accommodating groove.

[0018] Optionally, the second clamping assembly further comprises a second driving piece, the third clamping piece is mounted on the mounting plate, an output end of the second driving piece is connected to the fourth clamping piece, and the second driving piece can drive the fourth clamping piece to move close to or away from the third clamping piece, so as to clamp or release the second pin.

[0019] Optionally, the second clamping assembly further comprises a plurality of adjusting members, and a plurality of adjusting holes are arranged on the fourth clamping member, each adjusting member passes through a corresponding adjusting hole and is connected to the mounting plate.

[0020] When the second driving member drives the fourth clamping member to move, the adjusting member can move relative to the adjusting hole.

[0021] Optionally, the adjusting hole extends along the second direction.

[0022] Optionally, in the first direction, the minimum distance between the central axis of the first clamping groove and the second clamping groove is 100-400 mm.

[0023] Optionally, in the first direction, the minimum distance between the central axis of the first clamping groove and the second clamping groove is 100-350 mm.

[0024] Optionally, the mounting plate comprises a first sub-plate and a second sub-plate arranged in two parts, the first clamping assembly is arranged on the first sub-plate, the second clamping assembly is arranged on the second sub-plate, and the relative position between the first sub-plate and the second sub-plate can be changed.

[0025] In another aspect, the utility model embodiment provides a PCB processing equipment, including processing machine table, crossbeam, main shaft and the positioning device as mentioned before, the crossbeam is set up on the processing machine table, the positioning device is installed on the processing machine table, the main shaft is connected in the crossbeam along second direction sliding, the main shaft is used to process the material board that places on the mounting plate.

[0026] The positioning device provided by the utility model embodiment adopts the first clamping assembly and the plurality of second clamping assemblies with relatively short length size to cooperate with the positioning material board, compared with the prior art of using the second clamping assembly with relatively long length size, the length size of the second clamping assembly in the embodiment is relatively short, so that the straightness of the second clamping assembly itself can be guaranteed, and better positioning accuracy can be provided. Moreover, when correcting, the calibration member is respectively placed in the first clamping groove and the second clamping groove, since the plurality of second clamping grooves extend along the first direction and are located on the same straight line, the spacing between the calibration member in the first clamping groove and the calibration member in the second clamping groove is small, so that the correction difficulty can be reduced, the positioning effect can be ensured, the problem of misplacement of the processing hole on the material board can be reduced, and the PCB scrap can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic view of the positioning device provided by an embodiment of the utility model;

[0028] Figure 2 It is Figure 1An enlarged schematic view at A;

[0029] Figure 3 Is Figure 1 An enlarged schematic view at B;

[0030] Figure 4 Is a schematic view of the positioning device and the PCB according to an embodiment of the present application.

[0031] The reference signs in the description are as follows:

[0032] 100, positioning device;

[0033] 1, mounting plate; 11, first accommodating groove; 12, second accommodating groove; 13, third accommodating groove;

[0034] 2, first clamping assembly; 21, first clamping piece; 211, notch; 22, second clamping piece; 23, first clamping groove;

[0035] 3, second clamping assembly; 31, third clamping piece; 32, fourth clamping piece; 321, adjusting hole; 33, second clamping groove; 34, adjusting piece;

[0036] 200, processing machine table;

[0037] 300, PCB; 301, first pin; 302, second pin;

[0038] a, first direction; b, second direction; c, third direction. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects solved by the present application more clear and understandable, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0040] As Figures 1 to 4 shown, a positioning device 100 according to an embodiment of the present application is provided for positioning a material plate, the material plate comprising a first pin 301 and a second pin 302 arranged at intervals along a first direction, the positioning device 100 comprising a mounting plate 1, a first clamping assembly 2 and a plurality of second clamping assemblies 3, the first clamping assembly 2 and the second clamping assemblies 3 being mounted on the mounting plate 1. When the positioning device 100 positions the material plate, the first clamping assembly 2 is provided with a first clamping groove 23, the first clamping groove 23 being used for limiting the first pin 301 on the material plate. Each second clamping assembly 3 is provided with a second clamping groove 33, the second clamping groove 33 extending along the first direction a, the first clamping groove 23 and the plurality of second clamping grooves 33 being located on the same straight line, the second clamping groove 33 being used for clamping the second pin 302 on the material plate.

[0041] The first clamping groove 23 is taken as a mechanical zero point, and the extension direction of the second clamping groove 33 is taken as a Y axis, that is, the first direction a is taken as the Y axis, to construct an XY coordinate system. The material plate is a PCB, and the PCB 300 has a first pin 301 and a second pin 302. The first pin 301 is taken as a drilling program zero point of the PCB, and the line connecting the first pin 301 and the second pin 302 constitutes a Y axis. An XY coordinate system based on the first pin 301 and the second pin 302 can be established.

[0042] When the PCB 300 is clamped and positioned, the first pin 301 is clamped in the first clamping groove 23, so that the drilling program zero point coincides with the mechanical zero point, and the XY coordinate system of the PCB 300 coincides with the XY coordinate system on the positioning device 100. The spindle of the PCB processing equipment can be conveniently machined at the corresponding position of the PCB according to the coordinates of the drilling hole.

[0043] The positioning device provided in the application uses the first clamping assembly 2 and the multiple second clamping assemblies 3 with relatively short length dimensions to position the material plate. Compared with the prior art using the second clamping assembly 3 with a relatively long length dimension, the length dimension of the second clamping assembly 3 in the embodiment is relatively short, so that the straightness of the second clamping assembly 3 itself can be guaranteed, thereby providing better positioning accuracy. When correcting, the calibration pieces are respectively placed in the first clamping groove 23 and the second clamping groove 33, and then the straightness between the calibration pieces is adjusted using a micrometer. In the embodiment, the size of the mounting plate 1 in the first direction is constant. Since the multiple second clamping grooves extend along the first direction and are located on the same straight line, the size of each second clamping groove 33 in the first direction a can be reduced, and the straightness of the second clamping groove 33 itself is easily guaranteed. The spacing between the calibration piece in the first clamping groove 23 and the calibration piece in the second clamping groove 33 is small, so that the correction difficulty can be reduced, the calibration accuracy can be improved, the positioning effect can be ensured, the hole deviation problem of the PCB can be reduced, and the PCB plate can be reduced.

[0044] In an embodiment, the number of the second clamping grooves 33 is determined according to the size of the PCB. The conventional PCB size is divided into 30 inches (length) and below, 30-43 inches, and 43-49 inches, and the maximum PCB length that can be processed by the PCB processing equipment is 30 inches, 43 inches, and 49 inches, respectively. For example, in actual production, when the maximum PCB length that can be processed by the PCB processing equipment is 30 inches and below, two second clamping grooves 33 are arranged on the positioning device 100; when the maximum PCB length that can be processed by the PCB processing equipment is 43 inches, three second clamping grooves 33 are arranged on the positioning device 100; and when the maximum PCB length that can be processed by the PCB processing equipment is 49 inches, four second clamping grooves 33 are arranged on the positioning device 100.

[0045] In an embodiment, as shown in FIG. 2, the first clamping groove 23 is V-shaped. When the first clamping groove 23 is taken as the zero point, the first pin 301 is clamped in the V-shaped groove, and the first pin 301 is clamped more stably, so that the zero point of the drill tape program and the mechanical zero point are not prone to misalignment. Figure 2

[0046] In an embodiment, as shown in FIG. 2, the first clamping groove 23 is V-shaped. When the first clamping groove 23 is taken as the zero point, the first pin 301 is clamped in the V-shaped groove, and the first pin 301 is clamped more stably, so that the zero point of the drill tape program and the mechanical zero point are not prone to misalignment. Figure 1 Figure 2 In an embodiment, as shown in FIG. 2, the first clamping groove 23 is V-shaped. When the first clamping groove 23 is taken as the zero point, the first pin 301 is clamped in the V-shaped groove, and the first pin 301 is clamped more stably, so that the zero point of the drill tape program and the mechanical zero point are not prone to misalignment.

[0047] In an embodiment, the shape of the notch 211 includes but is not limited to V-shaped, arc-shaped, and square-shaped.

[0048] In an embodiment, as shown in FIG. 2, the first clamping groove 23 is V-shaped. When the first clamping groove 23 is taken as the zero point, the first pin 301 is clamped in the V-shaped groove, and the first pin 301 is clamped more stably, so that the zero point of the drill tape program and the mechanical zero point are not prone to misalignment. Figure 2 ​​As shown, the mounting plate 1 is provided with a first accommodating groove 11 and a second accommodating groove 12 which are in communication with each other, the first accommodating groove 11 and the second accommodating groove 12 are recessed from a side surface of the mounting plate 1 close to the PCB to a side surface of the mounting plate 1 away from the PCB, the first clamping piece 21 is arranged in the first accommodating groove 11, and the second clamping piece 22 is movably arranged in the second accommodating groove 12; the first clamping groove 23 is located at the joint of the first accommodating groove 11 and the second accommodating groove 12. The first clamping piece 21 and the second clamping piece 22 are not protruded from the surface of the mounting plate 1 through the first accommodating groove 11 and the second accommodating groove 12, so as to facilitate the mounting plate 1 to carry the PCB, and with the movement of the mounting plate 1, the first clamping assembly 2, the second clamping assembly 3 and the PCB move along with the mounting plate 1, so that the PCB processing equipment can process different positions on the PCB.

[0049] In an embodiment, as shown in Figure 1 , Figure 2 The first clamping piece 21 is square, the first accommodating groove 11 is square, and the notch 211 is arranged at one corner of the first clamping piece 21. The second clamping piece 22 is square, the second accommodating groove 12 is square, and the side surface of the second clamping piece 22 close to the first clamping piece 21 abuts against the first pin 301. In the radial direction of the first pin 301, the width of the side surface of the second clamping piece 22 close to the first clamping piece 21 is slightly smaller than the diameter of the first pin 301. In other alternative embodiments, the width of the side surface of the second clamping piece 22 close to the first clamping piece 21 is consistent with or slightly larger than the diameter of the first pin 301.

[0050] In an embodiment, as shown in Figure 2 The second accommodating groove 12 extends along a third direction, and the third direction has an included angle α with the first direction, 0≤α≤90. Further, 0<α<90, and further, α is equal to 45.

[0051] In an embodiment, the first clamping assembly 2 further comprises a first driving piece (not shown in the figure), the first clamping piece 21 is fixedly installed on the mounting plate 1 through a screw, the output end of the first driving piece is connected to the second clamping piece 22, and the first driving piece can drive the second clamping piece 22 to move in the second accommodating groove 12 along the third direction, so that the second clamping piece 22 is close to or away from the first clamping piece 21 to clamp or release the first pin 301. Through the movement of the first driving piece to drive the second clamping piece 22, the clamping stability of the first pin 301 between the first clamping piece 21 and the second clamping piece 22 can be ensured.

[0052] When the first driving member drives the second clamping member 22 to move along the second accommodating groove 12 and approach the first clamping member 21, the distance between the gap 211 and the end of the second clamping member 22 close to the first clamping member 21 decreases, and the first pin 301 is clamped so that the PCB processing equipment can process the PCB. When the first driving member drives the second clamping member 22 to move along the second accommodating groove 12 and move away from the first clamping member 21, the distance between the gap 211 and the end of the second clamping member 22 close to the first clamping member 21 increases, thereby releasing the first pin 301, so that the PCB can be separated from the mounting plate 1 after the PCB processing is completed.

[0053] In an embodiment, the first driving member is a pneumatic cylinder, which is installed on the side surface of the mounting plate 1 away from the PCB.

[0054] In an embodiment, as shown in Figure 1 , Figure 3 , the second clamping groove 33 is in a strip shape, so that the second pin 302 of the PCB of various sizes can be clamped in the second clamping groove 33, improving the application range of the second clamping groove 33, so that the positioning device 100 can be applied to the PIN clamping operation or TWOPIN operation processing of PCBs of various sizes.

[0055] In an embodiment, as shown in Figure 1 , Figure 3 , the second clamping assembly 3 includes a third clamping member 31 and a fourth clamping member 32, the third clamping member 31 and the fourth clamping member 32 are oppositely arranged along a second direction b, and the second clamping groove 33 is formed between the third clamping member 31 and the fourth clamping member 32, so that the second clamping groove 33 is in a strip shape and extends along the Y axis, so that after the first pin 301 and the second pin 302 of the PCB of any size are clamped in the first clamping groove 23 and the second clamping groove 33 respectively, the XY coordinate system of the PCB can be guaranteed to coincide with the XY coordinate system on the positioning device 100, and the processing position on the PCB is guaranteed to be accurate.

[0056] In an embodiment, the first direction a and the second direction b intersect. Preferably, the second direction b is the X direction, and the first direction a and the second direction b are perpendicular to each other.

[0057] In an embodiment, the side surface of the third clamping member 31 close to the fourth clamping member 32 is a plane, and the side surface of the fourth clamping member 32 close to the third clamping member 31 is a plane, so that the clamping position of the second pin 302 is not limited, and the positioning of the PCB of various sizes is adapted.

[0058] In an embodiment, as shown in Figure 1As shown, the mounting plate 1 is provided with a plurality of third accommodating grooves 13 recessed from the side surface of the mounting plate 1 close to the PCB to the side surface of the mounting plate 1 away from the PCB, the plurality of second clamping assemblies 3 and the plurality of third accommodating grooves 13 are correspondingly arranged, the third clamping piece 31 and the fourth clamping piece 32 of each second clamping assembly 3 are arranged in the third accommodating groove 13, so that the third clamping piece 31 and the fourth clamping piece 32 do not protrude from the surface of the mounting plate 1, facilitating the mounting plate 1 to carry the PCB, with the movement of the mounting plate 1, the first clamping assembly 2, the second clamping assembly 3 and the PCB move with the mounting plate 1, so that the PCB processing equipment can process different positions on the PCB.

[0059] In an embodiment, the third accommodating groove 13 is square, and the third clamping piece 31 and the fourth clamping piece 32 are strip-shaped.

[0060] In an embodiment, at least the fourth clamping piece 32 can move in the third accommodating groove 13, so that the fourth clamping piece 32 and the third clamping piece 31 can approach or move away from each other, thereby realizing clamping or loosening of the second pin 302.

[0061] In an embodiment, the second clamping assembly 3 further comprises a second driving piece (not shown in the figure), the third clamping piece 31 is fixedly installed on the mounting plate 1 by a screw, the output end of the second driving piece is connected to the fourth clamping piece 32, and the second driving piece can drive the fourth clamping piece 32 to move in the third accommodating groove 13, so that the fourth clamping piece 32 can approach or move away from the third clamping piece 31 to clamp or loosen the second pin 302, and moving the fourth clamping piece 32 by the second driving piece can ensure the clamping stability of the second pin 302 between the third clamping piece 31 and the fourth clamping piece 32.

[0062] In an embodiment, when the second driving piece drives the fourth clamping piece 32 to move, the output end of the second driving piece is connected to the middle part of the fourth clamping piece 32, which can drive the whole fourth clamping piece 32 to approach or move away from the third clamping piece 31, and the width of the second clamping groove 33 in the second direction remains uniform before and after clamping. Alternatively, the output end of the second driving piece is connected to one end of the fourth clamping piece 32, the width of the second clamping groove 33 in the second direction is not uniform before clamping the second pin 302, and after the second pin 302 is placed in the second clamping groove 33, the second driving piece drives one end of the fourth clamping piece 32 to approach the third clamping piece 31 to clamp the second pin 302, and the width of the second clamping groove 33 in the second direction tends to be uniform.

[0063] In other alternative embodiments, the third clamping member 31 and the fourth clamping member 32 are both movable in the third accommodating groove 13, and the moving directions of the third clamping member 31 and the fourth clamping member 32 are opposite, and the fourth clamping member 32 and the third clamping member 31 can also clamp or release the second pin 302.

[0064] In an embodiment, as shown in Figure 1 、 Figure 3 , the second clamping assembly 3 further comprises a plurality of adjusting members 34, and the fourth clamping member 32 is provided with a plurality of adjusting holes 321, each adjusting member 34 passes through the adjusting hole 321 and is connected to the mounting plate 1, when the second driving member drives the fourth clamping member 32 to move, the adjusting member 34 moves in the adjusting hole 321, and the movable range of the fourth clamping member 32 is provided through the adjusting hole 321, so as to realize the adjustment of the position of the fourth clamping member 32, and realize the clamping or releasing of the second pin 302 by the third clamping member 31 and the fourth clamping member 32.

[0065] In an embodiment, as shown in Figure 3 , the adjusting hole 321 is oval and extends along the second direction b, and the assembly tolerance of the fourth clamping member 32 and the third clamping member 31 and the position adjustment of the fourth clamping member 32 can be realized.

[0066] In an embodiment, as shown in Figure 1 , in the first direction a, the minimum distance L between the center axis of the first clamping groove 23 and the second clamping groove 33 is 100-400mm, which can increase the processable size range of the PCB.

[0067] Among the plurality of second clamping grooves 33, the second clamping groove 33 closest to the first clamping groove 23 is sorted first, and the minimum distance is the distance between the end of the first second clamping groove 33 close to the first clamping groove 23 and the center axis of the first clamping groove 23.

[0068] When the minimum distance between the center axis of the existing first clamping groove 23 and the second clamping groove 33 is greater than 400mm, the PIN clamping operation or TWOPIN operation cannot be performed on the PCB with a length less than 410mm, which reduces the use range of the positioning device 100. Compared with the traditional first clamping groove and the second clamping groove with a distance of more than 400mm, the distance in the embodiment is greatly reduced, which not only can process smaller size PCBs, but also makes the distance between the calibration members in the first clamping groove and the calibration members in the second clamping groove smaller, the distance between the calibration members in each second clamping groove smaller, which can reduce the correction difficulty, improve the correction accuracy, and further improve the hole position accuracy of the processed PCB, and reduce the risk of PCB processing off-hole.

[0069] In a preferred embodiment, the minimum distance L between the center axis of the first clamping groove 23 and the second clamping groove 33 in the first direction a is 100-350 mm.

[0070] In an embodiment, the mounting plate 1 comprises a first sub-plate and a second sub-plate, the first clamping assembly 2 is arranged on the first sub-plate, the second clamping assembly 3 is arranged on the second sub-plate, and the relative position between the first sub-plate and the second sub-plate can be changed.

[0071] The first sub-plate and the second sub-plate are arranged separately so that the relative position between the first sub-plate and the second sub-plate can be changed, and thus the straightness between the first clamping groove 23 on the first clamping assembly 2 and the second clamping groove 33 on the second clamping assembly 3 can be adjusted by adjusting the relative position between the first sub-plate and the second sub-plate. It should be understood that the mounting plate 1 can also be a whole; an adjusting assembly can also be arranged on the whole mounting plate 1, the first sub-plate or the second sub-plate to respectively adjust the relative position between the first clamping assembly 2 and the second clamping assembly 3, and thus respectively adjust the straightness between the first clamping groove 23 and the second clamping groove 33.

[0072] On the other hand, as shown in Figure 4 The utility model discloses an embodiment provides a kind of PCB processing equipment, including processing machine table 200, crossbeam, main shaft and the positioning device 100 of above embodiment, crossbeam is erected on processing machine table 200, positioning device 100 is installed on processing machine table 200, PCB 300 is placed on the upper surface of mounting plate 1, main shaft is located above mounting plate 1, main shaft is slidably connected in crossbeam, and main shaft is used to process PCB 300 placed on mounting plate 1.

[0073] Processing machine table 200 can drive positioning device 100 to move in the first direction, and the main shaft can move along the second direction on the crossbeam, so as to change the processing position of the main shaft on the material plate.

[0074] In an embodiment, the PCB processing equipment is a multi-axis drilling machine, and the main shaft of the drilling machine can drill holes in the PCB.

[0075] In an embodiment, the correction process of the PCB processing equipment is as follows:

[0076] S1, a first calibration piece is placed in the first clamping groove 23, and the first drive piece drives the second clamping piece 22 to approach the first clamping piece 21, so as to clamp the first calibration piece. The first calibration piece is a standard PIN nail.

[0077] S2, the main shaft moves to the mechanical zero position, and whether the coaxiality of the first calibration piece and the main shaft is within the error range is detected. If not, the position of the first calibration piece is adjusted to be coaxial with the main shaft.

[0078] S3, placing a second alignment piece in each second clamping groove 33.

[0079] S4, moving the machining table 200 along the first direction, and detecting whether the straightness between the first alignment piece and the second alignment piece is within the error range, if not, adjusting the position of the second alignment piece to be on the same straight line with the first alignment piece; and / or detecting whether the straightness between adjacent second alignment pieces is within the error range, if not, adjusting the position of the second alignment piece to be on the same straight line with the adjacent second alignment pieces.

[0080] In this embodiment, the position of the first clamping groove 23 is corrected by the first alignment piece. After the position of the first clamping groove 23 is determined, when the machining table 200 is driven to move along the first direction, the dial gauge draws a line along the first direction, and the two-point correction method of forming a straight line by two points between the first alignment piece and the second alignment piece or between two adjacent second alignment pieces is adopted to correct the second clamping groove 33, so that the straightness meets the requirements.

[0081] The mounting plate 1 is provided with a plurality of second clamping grooves 33, and at least one second alignment piece is placed in each second clamping groove 33. The dial gauge draws a line between each second alignment piece and the first alignment piece or between two adjacent second alignment pieces, so that each second clamping groove 33 can be corrected. Since the size of each second clamping groove 33 in the first direction is small, the distance between the first alignment piece and the second alignment piece and the distance between two adjacent second alignment pieces are small, so that the correction difficulty is reduced and the correction accuracy is improved.

[0082] In an embodiment, in step S2, the step of driving the spindle to move to the mechanical zero position and detecting whether the coaxiality of the first alignment piece and the spindle is within the error range specifically includes:

[0083] The dial gauge is installed on the spindle, and the spindle is driven to move to the mechanical zero position. The target position of the first clamping groove 23 is set as the mechanical zero position, the first direction is set as the Y axis, and the XY coordinate system is set. The coordinates of the mechanical zero position in the XY coordinate system are (0, 0).

[0084] The dial gauge head is overlapped on the first alignment piece, and the dial gauge rotates one circle around the first alignment piece based on the position of the spindle, so as to obtain whether the needle jumping range of the dial gauge is within the first error range. Since the first alignment piece is a standard PIN nail and is in a cylindrical shape, when the dial gauge rotates around the first alignment piece, the measurement of the dial gauge can be avoided from being affected by the error of the first alignment piece itself.

[0085] The position of the first clamping groove 23 is adjusted according to the needle jumping range of the dial gauge, so that the position of the first alignment piece is coaxial with the spindle.

[0086] In this embodiment, after the main shaft is moved to the mechanical zero position, the main shaft rotation can drive the dial gauge to rotate one circle around the first calibration piece, so that the coaxiality of the main shaft and the first calibration piece can be detected, and then whether the first calibration piece and the first clamping groove 23 are located at the mechanical zero position can be determined. When the first clamping groove 23 is located at the mechanical zero position, the central axis of the first calibration piece almost coincides with the central axis of the main shaft, and in the process of the main shaft driving the dial gauge to rotate, it is equivalent to rotating around the central axis of the first calibration piece, and the needle jumping range is very small. When the first clamping groove 23 is not located at the mechanical zero position, the needle jumping range is slightly larger, so as to judge the position of the first clamping groove 23 and the subsequent adjustment, until the position of the first calibration piece is coaxial with the main shaft.

[0087] In an embodiment, in step S2, when detecting whether the coaxiality of the first calibration piece and the main shaft is within the error range, the first error range of the dial gauge is ≤±0.005mm, the dial gauge head has a reading when it is overlapped on the first calibration piece, and in the process of the dial gauge rotating around the first calibration piece, if the needle jumping range does not exceed the ±0.005mm range of the reading, it indicates that the needle jumping range of the dial gauge is within the first error range. If the needle jumping range exceeds the ±0.005mm range of the reading, it indicates that the position accuracy of the first calibration piece does not meet the requirements, i.e. the position accuracy of the first clamping groove 23 does not meet the requirements, and the position of the first clamping groove 23 needs to be adjusted.

[0088] It can be understood that after the adjustment is completed in step S2, the dial gauge head can be overlapped on the first calibration piece again, the dial gauge is rotated one circle around the first calibration piece, the needle of the dial gauge is read, and whether the first clamping groove 23 is adjusted to the target position is judged. According to the XY coordinate system of the PCB and the XY coordinate system on the positioning device 100, the target position of the first clamping groove 23 is the mechanical zero position.

[0089] In an embodiment, in step S4, driving the machining table 200 to move in the first direction and detecting whether the straightness between the first calibration piece and the second calibration piece is within the error range specifically includes:

[0090] The dial gauge is installed on the cross beam.

[0091] The dial gauge head is overlapped on the first calibration piece, and when the machining table 200 moves in the first direction, the dial gauge moves in the first direction relative to the positioning device 100, so that the dial gauge head can draw a straight line on the positioning device 100. With the movement of the machining table 200, the dial gauge can be overlapped with the second calibration piece, and in the process of the dial gauge drawing a straight line, whether the needle jumping range of the dial gauge is within the second error range is obtained.

[0092] The position of the second clamping groove 33 is adjusted according to the range of the dial indicator needle jump, so that the position of the second calibration piece is on the same straight line with the first calibration piece.

[0093] In the embodiment, the first direction is Y axis, the first calibration piece is a standard PIN nail, and the first calibration piece is in a cylindrical shape. The first calibration piece has a section plane extending along the Y axis. According to the section plane, the second calibration piece has a calibration surface. With the movement of the processing machine 200, the dial indicator head can be sequentially connected to the reference surface and the calibration surface.

[0094] After the correction of the first clamping groove 23 in steps S1 and S2, the reference surface is on the Y axis. According to the reading of the dial indicator head connected to the reference surface, the dial indicator head can move on the calibration surface through the processing machine 200 moving along the Y axis. According to the dial indicator needle jump range when the dial indicator head is connected to the calibration surface, it can be determined whether the calibration surface is on the Y axis. If the calibration surface is also on the Y axis, that is, the position of the second calibration piece is on the same straight line with the first calibration piece, when the dial indicator head moves from the reference surface to the calibration surface, the dial indicator needle jump range is very small. If the calibration surface is not on the Y axis, that is, the position of the second calibration piece is not on the same straight line with the first calibration piece, the dial indicator needle jump range is slightly larger. In this way, the position of the second clamping groove 33 is corrected and adjusted.

[0095] In an embodiment, in step S3, the position of the second calibration piece in the second clamping groove 33 is not specifically limited, and preferably, the second calibration piece is placed in the middle of the second clamping groove 33. Alternatively, one second calibration piece is placed at each end of the second clamping groove 33.

[0096] In an embodiment, in step S4, when detecting whether the straightness between the first calibration piece and the second calibration piece is within the error range, the second error range of the dial indicator is ≤±0.01 mm during the drawing of the straight line by the dial indicator. The dial indicator head has a reading when connected to the first calibration piece. When the dial indicator moves along the first direction, the dial indicator needle jump range is observed when the dial indicator moves to the second calibration piece. If the dial indicator needle jump range does not exceed the ±0.01 mm range of the reading, it indicates that the dial indicator needle jump range is within the second error range. If the dial indicator needle jump range exceeds the ±0.01 mm range of the reading, it indicates that the straightness of the second calibration piece does not meet the requirements, that is, the straightness of the second clamping groove 33 does not meet the requirements, and the position of the second clamping groove 33 needs to be adjusted.

[0097] After the adjustment is completed in step S4, the head of the micrometer can be overlapped on the second calibration member again, the micrometer is moved and the reading of the micrometer needle is observed to determine whether the second clamping groove 33 is adjusted to the target position. According to the XY coordinate system of the PCB and the XY coordinate system on the positioning device 100, the target position of the second clamping groove 33 is the Y axis.

[0098] In an embodiment, in step S4, the detection of whether the straightness between adjacent second calibration members is within the error range specifically includes:

[0099] The micrometer is installed on the cross beam.

[0100] When the processing machine table 200 moves in the first direction, the micrometer moves in the first direction relative to the positioning device 100, so that the head of the micrometer can draw a straight line on the positioning device 100. Among the adjacent second calibration members, the head of the micrometer is overlapped on one of the second calibration members, and as the processing machine table 200 moves, the micrometer is overlapped with another second calibration member. In the process of drawing a straight line by the micrometer, whether the micrometer needle jump range is within the third error range is obtained.

[0101] According to the micrometer needle jump range, the position of each second clamping groove 33 is adjusted to make the adjacent second calibration members located on the same straight line.

[0102] In this embodiment, when the straightness of the plurality of second clamping grooves 33 is corrected, the second calibration member is placed in each second clamping groove 33. One of the second calibration members can be calibrated by the first calibration member first to ensure that the second calibration member is located on the Y axis.

[0103] Then, the surface of the calibrated second calibration member is used as the reference surface, and the surfaces of the remaining second calibration members are used as the calibration surfaces. As the processing machine table 200 moves, the head of the micrometer can be overlapped on the reference surface and the calibration surface in turn.

[0104] Taking the reading when the head of the micrometer is overlapped with the reference surface as the reference, the head of the micrometer can move on the calibration surface through the processing machine table 200 moving along the Y axis. Through the micrometer needle jump range when the head of the micrometer is overlapped with the calibration surface, it can be judged whether the calibration surface is located on the Y axis. If the calibration surface is also on the Y axis, i.e. the position of the second calibration member is on the same straight line as the first calibration member, when the head of the micrometer moves from the reference surface to the calibration surface, the micrometer needle jump range is very small. If the calibration surface is not on the Y axis, i.e. the position of the second calibration member is not on the same straight line as the first calibration member, the micrometer needle jump range is slightly larger. In this way, the position of the second clamping groove 33 is corrected and adjusted.

[0105] In an embodiment, in step S4, when detecting whether the straightness between the adjacent second calibration members is within the error range, the third error range of the dial gauge is ≤±0.01 mm in the process of drawing a straight line by the dial gauge, the dial gauge has a reading when the dial head of the dial gauge is lapped on one of the second calibration members, and the dial gauge is moved in a straight line in the first direction, the jumping range of the dial needle of the dial gauge is observed when the dial gauge moves to the other second calibration member. If the jumping range of the dial needle is not beyond the ±0.01 mm range of the reading, it indicates that the jumping range of the dial needle of the dial gauge is within the third error range. If the jumping range of the dial needle is beyond the ±0.01 mm range of the reading, it indicates that the straightness of the adjacent two second calibration members does not meet the requirements, i.e., the straightness of the plurality of second clamping grooves 33 does not meet the requirements, and the position of the second clamping groove 33 needs to be adjusted.

[0106] After the adjustment of the first clamping groove 23 and the second clamping groove 33 is completed, after the first pin 301 is clamped in the first clamping groove 23 and the second pin 302 is clamped in the second clamping groove 33, it can be ensured that the XY coordinate system of the PCB coincides with the XY coordinate system on the positioning device 100, the dislocation problem of the processing holes on the PCB is greatly reduced, the scrap of the PCB is reduced, and the TWOPIN operation of the PCB mechanical drilling machine is realized.

[0107] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A positioning device for positioning a material sheet, the material sheet comprising a first pin and a second pin arranged at intervals in a first direction, characterized by, The mounting plate, a first clamping assembly and a plurality of second clamping assemblies are included, and the first clamping assembly and the second clamping assemblies are mounted on the mounting plate; A first clamping groove is arranged on the first clamping assembly, and the first clamping groove is used for limiting the first pin; A second clamping groove is arranged on each of the second clamping assemblies, the second clamping groove extends along the first direction, and the first clamping groove and the plurality of second clamping grooves are located on the same straight line, and the second clamping groove is used for clamping the second pin.

2. The positioning device of claim 1, wherein, The first clamping assembly includes a first clamping piece and a second clamping piece, a notch is arranged on the side of the first clamping piece close to the second clamping piece, and the first clamping groove is formed between the notch and the end of the second clamping piece close to the first clamping piece.

3. The positioning device of claim 2, wherein, A first accommodating groove and a second accommodating groove that are in communication with each other are arranged on the mounting plate, the first clamping piece is arranged in the first accommodating groove, and the second clamping piece is movably connected in the second accommodating groove; The first clamping groove is located at the joint of the first accommodating groove and the second accommodating groove.

4. The positioning device of claim 2, wherein, The first clamping assembly further includes a first driving piece, the first clamping piece is mounted on the mounting plate, the output end of the first driving piece is connected to the second clamping piece, and the first driving piece can drive the second clamping piece to be close to or away from the first clamping piece, so as to clamp or release the first pin.

5. The positioning device of claim 1, wherein, The second clamping groove is in the shape of a strip.

6. Positioning device according to any of claims 1-5, characterized in that The second clamping assembly includes a third clamping piece and a fourth clamping piece, the third clamping piece and the fourth clamping piece are oppositely arranged along a second direction, and the second clamping groove is formed between the third clamping piece and the fourth clamping piece; The first direction and the second direction are perpendicular to each other.

7. The positioning device of claim 6, wherein, A plurality of third accommodating grooves are arranged on the mounting plate, and the plurality of second clamping assemblies and the plurality of third accommodating grooves are arranged one by one in correspondence; The third clamping piece and the fourth clamping piece are arranged in the third accommodating groove, and at least the fourth clamping piece can move along the third accommodating groove.

8. The positioning device of claim 6, wherein, The second clamping assembly further includes a second driving piece, the third clamping piece is mounted on the mounting plate, the output end of the second driving piece is connected to the fourth clamping piece, and the second driving piece can drive the fourth clamping piece to be close to or away from the third clamping piece, so as to clamp or release the second pin.

9. The positioning device of claim 8, wherein, The second clamping assembly further includes a plurality of adjusting pieces, a plurality of adjusting holes are arranged on the fourth clamping piece, each of the adjusting pieces passes through a corresponding adjusting hole and is connected to the mounting plate; When the second driving piece drives the fourth clamping piece to move, the adjusting piece can move relative to the adjusting hole.

10. The positioning device of claim 1, wherein, In the first direction, the minimum distance between the center axis of the first clamping groove and the second clamping groove is 100-400 mm.

11. The positioning device of claim 1, wherein, In the first direction, the minimum distance between the center axis of the first clamping groove and the second clamping groove is 100-350 mm.

12. The positioning device of claim 1, wherein, The mounting plate comprises a first sub-plate and a second sub-plate arranged separately, the first clamping assembly is arranged on the first sub-plate, the second clamping assembly is arranged on the second sub-plate, and the relative position between the first sub-plate and the second sub-plate can be changed.

13. A PCB processing apparatus characterized by comprising: The positioning device comprises a processing machine table, a beam, a spindle and the positioning device of any one of claims 1-12, the beam is arranged on the processing machine table, the positioning device is arranged on the processing machine table, the spindle is slidably connected to the beam along a second direction, and the spindle is used for processing the material plate placed on the mounting plate.

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