Positioning device, PCB processing equipment and correction method thereof

Abstract

The invention belongs to the technical field of PCB positioning, and particularly relates to a positioning device, PCB processing equipment and a correction method of the 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 invention belongs to the technical field of PCB positioning, and in particular relates to a positioning device, PCB processing equipment and a correction method thereof. Background Art

[0002] In the PCB (Printed Circuit Board) manufacturing process, in order to improve the operating efficiency of the mechanical drilling process, the industry often uses a positioning device to quickly position the PCB to facilitate PCB processing.

[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 serves as the zero point of the drilling program of the PCB. The line connecting the two points of the first pin and the second pin constitutes the Y axis, and an XY coordinate system based on the first pin and the second pin can be established. During operation, the first pin is fixed at the mechanical zero point. At this time, the zero point of the drilling program 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 working area of ​​the drilling machine, thereby realizing drilling at the corresponding position.

[0004] After the drilling machine has been running for a long time, due to the influence of external factors such as ambient temperature and vibration, the mechanical zero position accuracy and the straightness of the air clamp will change, and the accuracy of the positioning device is difficult to guarantee. Therefore, it is necessary to check or re-adjust the accuracy of the positioning device regularly or when production is abnormal. However, the existing positioning device cannot guarantee its own straightness due to its long structural dimensions. At the same time, the current correction method is difficult, resulting in a long correction time, affecting production efficiency, causing misalignment of the processed holes, and causing PCB scrapping. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in view of the problem that the existing positioning device is difficult to calibrate, a positioning device, a PCB processing equipment and a correction method thereof are provided.

[0006] To solve the above technical problems, on the one hand, an embodiment of the present invention provides a positioning device for positioning a material plate, the material plate comprising a first pin and a second pin spaced apart along a first direction, comprising a mounting plate, a first clamping assembly and a plurality of second clamping assemblies, the first clamping assembly and the second clamping assembly being mounted on the mounting plate; The first clamping assembly is provided with a first clamping groove, and the first clamping groove is used to limit the first pin; Each of the second clamping components is provided with a second clamping groove, the second clamping groove extends along the first direction, and the first clamping groove and a plurality of the second clamping grooves are located on the same straight line, and the second clamping groove is used to clamp the second pin.

[0007] Optionally, the first clamping assembly includes a first clamping member and a second clamping member, a notch is provided on a side of the first clamping member close to the second clamping member, and the first clamping groove is formed between the notch and an end of the second clamping member close to the first clamping member.

[0008] Optionally, the mounting plate is provided with a first accommodating groove and a second accommodating groove that are interconnected, the first clamping member is arranged in the first accommodating groove, and the second clamping member is movably connected in the second accommodating groove; The first clamping groove is located at the junction of the first accommodating groove and the second accommodating groove.

[0009] Optionally, the first clamping assembly further includes a first driving member, the first clamping member is mounted on the mounting plate, the output end of the first driving member is connected to the second clamping member, and the first driving member can drive the second clamping member to approach or move away from the first clamping member to clamp or release the first pin.

[0010] Optionally, the second clamping groove is in a strip shape.

[0011] Optionally, the second clamping assembly includes a third clamping member and a fourth clamping member, the third clamping member and the fourth clamping member are arranged opposite to each other along the second direction, and the second clamping groove is formed between the third clamping member and the fourth clamping member; The first direction and the second direction intersect.

[0012] Optionally, a plurality of third accommodating grooves are provided on the mounting plate, and a plurality of the second clamping assemblies and a plurality of the third accommodating grooves are provided in one-to-one correspondence; The third clamping member and the fourth clamping member are disposed in the third accommodating groove, and at least the fourth clamping member can move along the third accommodating groove.

[0013] Optionally, the second clamping assembly also includes a second driving member, the third clamping member is installed on the mounting plate, the output end of the second driving member is connected to the fourth clamping member, and the second driving member can drive the fourth clamping member to approach or move away from the third clamping member to clamp or release the second pin.

[0014] Optionally, the second clamping assembly further includes a plurality of adjusting members, the fourth clamping member is provided with a plurality of adjusting holes, and each of the adjusting members passes through a corresponding adjusting hole and is connected to the mounting plate; When the second driving member drives the fourth clamping member to move, the adjusting member can move relative to the adjusting hole.

[0015] Optionally, the adjustment hole extends along the second direction.

[0016] Optionally, in the first direction, a minimum distance between a central axis of the first clamping groove and the second clamping groove is 100-400 mm.

[0017] 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.

[0018] Optionally, the mounting plate includes a first sub-plate and a second sub-plate which are separately arranged, 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.

[0019] On the other hand, an embodiment of the present invention provides a PCB processing equipment, including a processing machine, a beam, a spindle and the positioning device as described above, the beam is mounted on the processing machine, the positioning device is installed on the processing machine, the spindle is slidably connected to the beam along a second direction, and the spindle is used to process the material plate placed on the mounting plate.

[0020] On the other hand, an embodiment of the present invention provides a PCB processing equipment calibration method, which is applied to the PCB processing equipment as described above, comprising: placing a first calibration piece in the first clamping groove; The spindle moves to a mechanical zero position, and detects whether the coaxiality between the first calibration piece and the spindle is within an error range. If not, the position of the first calibration piece is adjusted to be coaxial with the spindle; placing a second calibration piece in each of the second clamping grooves; The processing machine moves along the first direction and detects whether the straightness between the first calibration piece and the second calibration piece is within an error range. If not, the position of the second calibration piece is adjusted to be in the same straight line as the first calibration piece; and / or detects whether the straightness between adjacent second calibration pieces is within an error range. If not, the position of the second calibration piece is adjusted to be in the same straight line with adjacent second calibration pieces.

[0021] Optionally, the PCB processing equipment includes a micrometer, the spindle moves to a mechanical zero position, and the step of detecting whether the coaxiality of the first calibration piece and the spindle is within an error range specifically includes: The micrometer is installed on the spindle, and the spindle is moved to the mechanical zero position; Overlapping the dial gauge head on the first calibration piece, and rotating the dial gauge around the first calibration piece for one circle to determine whether the needle jump range of the dial gauge is within a first error range; The position of the first clamping groove is adjusted according to the needle jump range of the micrometer so that the position of the first calibration part is coaxial with the main shaft.

[0022] Optionally, the PCB processing equipment includes a micrometer, the processing machine moves along the first direction, and detecting whether the straightness between the first calibration piece and the second calibration piece is within an error range specifically includes: Install the micrometer on the beam or the spindle; The dial gauge head is overlapped on the first calibration piece; The processing machine moves along the first direction so that the micrometer overlaps with the second calibration piece, and obtains whether the needle jump range of the micrometer is within a second error range; The position of the second clamping groove is adjusted according to the needle jump range of the micrometer so that the position of the second calibration part is in the same straight line as the first calibration part.

[0023] Optionally, the PCB processing equipment includes a micrometer, and the detecting whether the straightness between adjacent second calibration pieces is within an error range specifically includes: Install the micrometer on the beam or the spindle; Among the adjacent second calibration pieces, the dial gauge head is overlapped on one of the second calibration pieces; The processing machine moves along the first direction so that the micrometer overlaps with another second calibration piece, and obtains whether the needle jump range of the micrometer is within a third error range; The position of each of the second clamping grooves is adjusted according to the needle jump range of the micrometer so that adjacent second calibration parts are located in the same straight line.

[0024] The positioning device provided in the embodiment of the present invention adopts a first clamping component and a plurality of second clamping components with shorter lengths to cooperate in positioning the material plate. Compared with the existing second clamping components with longer lengths, the second clamping components in this embodiment have shorter lengths, so the straightness of the second clamping components themselves can be guaranteed, thereby providing better positioning accuracy. In addition, when performing calibration, calibration pieces are placed in the first clamping groove and the second clamping groove respectively. 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 piece in the first clamping groove and the calibration piece in the second clamping groove is small, thereby reducing the difficulty of calibration, thereby ensuring the positioning effect, reducing the problem of misalignment of the processing holes on the material plate, and reducing PCB scrapping. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1is a schematic diagram of a positioning device provided by an embodiment of the present invention; Figure 2 yes Figure 1 The enlarged schematic diagram of point A in the middle; Figure 3 yes Figure 1 The enlarged schematic diagram of point B in the middle; Figure 4 is a schematic diagram of a positioning device and a PCB provided by an embodiment of the present invention; Figure 5 It is a flowchart of a calibration method provided by an embodiment of the present invention.

[0026] The reference numerals in the specification are as follows: 100. Positioning device; 1. Mounting plate; 11. First receiving slot; 12. Second receiving slot; 13. Third receiving slot; 2. first clamping assembly; 21. first clamping member; 211. notch; 22. second clamping member; 23. first clamping groove; 3. Second clamping assembly; 31. Third clamping member; 32. Fourth clamping member; 321. Adjusting hole; 33. Second clamping groove; 34. Adjusting member; 200. Processing machines; 300, PCB; 301, first pin; 302, second pin; a, first direction; b, second direction; c, third direction. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] like Figures 1 to 4 As shown, a positioning device 100 provided in one embodiment of the present invention is used for positioning a material plate. The material plate includes a first pin 301 and a second pin 302 arranged at intervals along a first direction. The positioning device 100 includes 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 assembly 3 are mounted on the mounting plate 1. When the positioning device 100 positions the material plate, a first clamping groove 23 is provided on the first clamping assembly 2. The first clamping groove 23 is used to limit 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 extends along the first direction a. The first clamping groove 23 and the plurality of second clamping grooves 33 are located on the same straight line. The second clamping groove 33 is used to clamp the second pin 302 on the material plate.

[0029] On the positioning device 100, the position of the first clamping groove 23 is the mechanical zero point, and the extension direction of the second clamping groove 33 is the Y axis, that is, the first direction a is the Y axis, and an XY coordinate system is constructed. The material plate is a PCB, and the PCB300 has a first pin 301 and a second pin 302. The first pin 301 serves as the drill belt program zero point of the PCB, and the connecting line of the first pin 301 and the second pin 302 constitutes the Y axis, so that an XY coordinate system based on the first pin 301 and the second pin 302 can be established.

[0030] When clamping and positioning the PCB300, the first pin 301 is clamped in the first clamping groove 23, so that the drill belt program zero point coincides with the mechanical zero point, and the XY coordinate system of the PCB300 coincides with the XY coordinate system on the positioning device 100, which facilitates the spindle of the PCB processing equipment to process at the corresponding position of the PCB according to the coordinates of the drilling hole.

[0031] The positioning device provided by the present application adopts a first clamping component 2 and a plurality of second clamping components 3 with shorter length dimensions to cooperate with the positioning plate. Compared with the existing second clamping components 3 with longer length dimensions, the second clamping components 3 in this embodiment are shorter in length dimensions, so the straightness of the second clamping components 3 themselves can be guaranteed, thereby providing better positioning accuracy. In addition, when performing calibration, 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 this embodiment, the size of the mounting plate 1 in the first direction is certain. Since the plurality of 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 self can be easily guaranteed. Moreover, the spacing between the calibration piece in the first clamping groove 23 and the calibration piece in the second clamping groove 33 is small, thereby reducing the difficulty of calibration, improving the calibration accuracy, thereby ensuring the positioning effect, reducing the problem of PCB eccentric holes, and reducing the scrapping of PCB boards.

[0032] In one embodiment, the number of the second clamping grooves 33 is determined according to the size of the PCB. Conventional PCB sizes are divided into 30 inches (length) and below, 30-43 inches, and 43-49 inches. Correspondingly, the maximum processable PCB lengths of the PCB processing equipment are 30 inches, 43 inches, and 49 inches, respectively. For example, in actual production, when the maximum processable PCB length on the PCB processing equipment is 30 inches and below, two second clamping grooves 33 are provided on the positioning device 100; when the maximum processable PCB length on the PCB processing equipment is 43 inches, three second clamping grooves 33 are provided on the positioning device 100; when the maximum processable PCB length on the PCB processing equipment is 49 inches, four second clamping grooves 33 are provided on the positioning device 100.

[0033] In one embodiment, if Figure 2 As shown, the first clamping groove 23 is V-shaped. When the first clamping groove 23 is used as the zero point, the first pin 301 is clamped in the V-shaped groove. The first pin 301 is clamped more firmly, so that the drill belt program zero point and the mechanical zero point are not easily misaligned.

[0034] In one embodiment, if Figure 1 , Figure 2 As shown, the first clamping assembly 2 includes a first clamping member 21 and a second clamping member 22. A notch 211 is provided on one side of the first clamping member 21 close to the second clamping member 22. A first clamping groove 23 is formed between the notch 211 and one end of the second clamping member 22 close to the first clamping member 21. The first pin 301 is placed in the first clamping groove 23. The position of the first pin 301 can be limited by the notch 211. One end of the second clamping member 22 close to the first clamping member 21 abuts against the first pin 301, thereby achieving the clamping of the first pin 301.

[0035] In one embodiment, the shape of the notch 211 includes but is not limited to a V-shape, an arc shape, or a square shape.

[0036] In one embodiment, if Figure 2 As shown, the mounting plate 1 is provided with a first receiving groove 11 and a second receiving groove 12 which are interconnected. The first receiving groove 11 and the second receiving groove 12 are 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 first clamping member 21 is provided in the first receiving groove 11, and the second clamping member 22 is movably provided in the second receiving groove 12; the first clamping groove 23 is located at the intersection of the first receiving groove 11 and the second receiving groove 12. The first receiving groove 11 and the second receiving groove 12 make it possible for the first clamping member 21 and the second clamping member 22 not to protrude from the surface of the mounting plate 1, so that the mounting plate 1 can carry the PCB. As the mounting plate 1 moves, 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.

[0037] In one embodiment, if Figure 1 , Figure 2 As shown, the first clamping member 21 is square, the first receiving groove 11 is square, and the notch 211 is arranged at a corner of the first clamping member 21. The second clamping member 22 is square, the second receiving groove 12 is square, and a side surface of the second clamping member 22 close to the first clamping member 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 member 22 close to the first clamping member 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 member 22 close to the first clamping member 21 is the same as or slightly larger than the diameter of the first pin 301.

[0038] In one embodiment, if Figure 2 As shown, the second receiving groove 12 extends along the third direction, and the third direction and the first direction have an angle α, 0≤α≤90. Further, 0<α<90, and further, α is equal to 45.

[0039] In one embodiment, the first clamping assembly 2 also includes a first driving member (not shown in the figure), the first clamping member 21 is fixedly mounted on the mounting plate 1 by screws, and the output end of the first driving member is connected to the second clamping member 22. The first driving member can drive the second clamping member 22 to move in the second accommodating groove 12 along a third direction, so that the second clamping member 22 approaches or moves away from the first clamping member 21 to clamp or release the first pin 301. By driving the second clamping member 22 to move by the first driving member, the clamping stability of the first pin 301 between the first clamping member 21 and the second clamping member 22 can be ensured.

[0040] When the first driving member drives the second clamping member 22 to approach the first clamping member 21 along the second receiving groove 12, the distance between the notch 211 and the end of the second clamping member 22 close to the first clamping member 21 is reduced, 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 away from the first clamping member 21 along the second receiving groove 12, the distance between the notch 211 and the end of the second clamping member 22 close to the first clamping member 21 is increased, thereby releasing the first pin 301, so that the PCB can be separated from the mounting plate 1 after the PCB processing is completed.

[0041] In one embodiment, the first driving member is a cylinder, and the cylinder is installed on a side surface of the mounting plate 1 away from the PCB.

[0042] In one embodiment, if Figure 1 , Figure 3 As shown, the second clamping groove 33 is in a bar shape, so that the second pins 302 of PCBs of various sizes can be clamped in the second clamping groove 33, thereby improving the application range of the second clamping groove 33 and making the positioning device 100 applicable to PIN clamping operations or TWOPIN operations of PCBs of various sizes.

[0043] In one embodiment, if Figure 1 , Figure 3As shown, the second clamping assembly 3 includes a third clamping member 31 and a fourth clamping member 32, and the third clamping member 31 and the fourth clamping member 32 are arranged relatively to each other along the 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 strip-shaped, and the second clamping groove 33 extends along the Y-axis, so that after the first pin 301 and the second pin 302 of a 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 ensured to coincide with the XY coordinate system on the positioning device 100, thereby ensuring the accuracy of the processing position on the PCB.

[0044] 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.

[0045] In one embodiment, the side surface of the third clamping member 31 close to the fourth clamping member 32 is flat, and the side surface of the fourth clamping member 32 close to the third clamping member 31 is flat, so that the clamping position of the second pin 302 is not restricted and can adapt to the positioning of PCBs of various sizes.

[0046] In one embodiment, if Figure 1 As shown, a plurality of third accommodating grooves 13 are provided on the mounting plate 1, and the third accommodating grooves 13 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. A plurality of second clamping components 3 and a plurality of third accommodating grooves 13 are provided in a one-to-one correspondence, and a third clamping member 31 and a fourth clamping member 32 of each second clamping component 3 are both provided in the third accommodating groove 13, so that the third clamping member 31 and the fourth clamping member 32 do not protrude from the surface of the mounting plate 1, so that the mounting plate 1 is convenient for carrying the PCB. As the mounting plate 1 moves, the first clamping component 2, the second clamping component 3 and the PCB follow the movement of the mounting plate 1, so that the PCB processing equipment can process different positions on the PCB.

[0047] In one embodiment, the third receiving groove 13 is square, and the third clamping member 31 and the fourth clamping member 32 are strip-shaped.

[0048] In one embodiment, at least the fourth clamping member 32 can move in the third receiving groove 13 , so that the fourth clamping member 32 and the third clamping member 31 can move closer to or farther from each other, thereby clamping or releasing the second pin 302 .

[0049] In one embodiment, the second clamping assembly 3 also includes a second driving member (not shown in the figure), the third clamping member 31 is fixedly mounted on the mounting plate 1 by screws, and the output end of the second driving member is connected to the fourth clamping member 32. The second driving member can drive the fourth clamping member 32 to move in the third accommodating groove 13, so that the fourth clamping member 32 can approach or move away from the third clamping member 31 to clamp or release the second pin 302. By driving the fourth clamping member 32 to move by the second driving member, the clamping stability of the second pin 302 between the third clamping member 31 and the fourth clamping member 32 can be ensured.

[0050] When the second driving member drives the fourth clamping member 32 to move, the output end of the second driving member is connected to the middle of the fourth clamping member 32, and can drive the entire fourth clamping member 32 to approach or move away from the third clamping member 31, and the width of the second clamping groove 33 in the second direction before and after clamping is kept uniform. Alternatively, the output end of the second driving member is connected to one end of the fourth clamping member 32, and before the second clamping groove 33 clamps the second pin 302, the width of the second clamping groove 33 in the second direction is uneven. After the second pin 302 is placed in the second clamping groove 33, the second driving member drives one end of the fourth clamping member 32 to approach the third clamping member 31, clamp the second pin 302, and the width of the second clamping groove 33 in the second direction tends to be uniform.

[0051] In other alternative embodiments, the third clamping member 31 and the fourth clamping member 32 are both able to move in the third accommodating groove 13, and the movement directions of the third clamping member 31 and the fourth clamping member 32 are opposite, so that the fourth clamping member 32 and the third clamping member 31 can also clamp or release the second pin 302.

[0052] In one embodiment, if Figure 1 , Figure 3 As shown, the second clamping assembly 3 also includes a plurality of adjusting members 34, and a plurality of adjusting holes 321 are provided on the fourth clamping member 32. 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, thereby realizing the adjustment of the position of the fourth clamping member 32, and realizing the clamping or release of the second pin 302 by the third clamping member 31 and the fourth clamping member 32.

[0053] In one embodiment, if Figure 3 As shown, the adjustment hole 321 is elliptical and extends along the second direction b, which can achieve 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 .

[0054] In one embodiment, if Figure 1As shown, in the first direction a, the minimum distance L between the central axis of the first clamping groove 23 and the second clamping groove 33 is 100-400 mm, which can increase the processable size range of the PCB.

[0055] Among the multiple 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 one end of the first second clamping groove 33 close to the first clamping groove 23 and the central axis of the first clamping groove 23.

[0056] When the minimum distance between the central axis of the existing first clamping groove 23 and the second clamping groove 33 is greater than 400 mm, the PCB with a length less than 410 mm cannot be clamped by PIN operation or TWOPIN operation, which reduces the use range of the positioning device 100. Compared with the conventional spacing of more than 400 mm between the first clamping groove and the second clamping groove, this spacing is greatly reduced in this embodiment, which not only allows the processing of smaller PCB boards, but also makes the spacing between the calibration piece in the first clamping groove and the calibration piece in the second clamping groove smaller during calibration, and the spacing between the calibration pieces in each second clamping groove is smaller, which can reduce the difficulty of calibration, improve the calibration accuracy, and further improve the hole position accuracy of the processed PCB board, and reduce the risk of eccentric hole processing of the PCB board.

[0057] In a preferred embodiment, in the first direction a, a minimum distance L between the central axis of the first clamping groove 23 and the second clamping groove 33 is 100-350 mm.

[0058] In one embodiment, the mounting plate 1 includes a first sub-plate and a second sub-plate which are separately arranged, 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.

[0059] The first sub-plate and the second sub-plate are separately arranged so that the relative position between the first sub-plate and the second sub-plate can be changed, and then the relative position between the first sub-plate and the second sub-plate can be adjusted to adjust the straightness between the first clamping groove 23 on the first clamping component 2 and the second clamping groove 33 on the second clamping component 3. It should be understood that the mounting plate 1 can also be an integral body; on the integral mounting plate 1, the first sub-plate or the second sub-plate, an adjustment component can also be arranged to respectively adjust the relative position between the first clamping component 2 and the second clamping component 3, and then respectively adjust the straightness between the first clamping groove 23 and the second clamping groove 33.

[0060] On the other hand, Figure 4As shown, an embodiment of the present invention provides a PCB processing equipment, including a processing machine 200, a beam, a spindle and the positioning device 100 of the above embodiment, the beam is mounted on the processing machine 200, the positioning device 100 is installed on the processing machine 200, the PCB is placed on the upper surface of the mounting plate 1, the spindle is located above the mounting plate 1, the spindle is slidably connected to the beam, and the spindle is used to process the material plate placed on the mounting plate 1.

[0061] The processing machine 200 can drive the positioning device 100 to move in a first direction, and the spindle can move along a second direction on the beam, thereby changing the processing position of the spindle on the material plate.

[0062] In one embodiment, the PCB processing equipment is a multi-axis drilling machine, and the spindle on the drilling machine can perform drilling processing on the PCB.

[0063] On the other hand, Figure 5 As shown, an embodiment of the present invention provides a PCB processing equipment calibration method, which is applied to the PCB processing equipment in the above embodiment, and specifically includes: S1. Place a first calibration piece in the first clamping groove 23, and drive the second clamping piece 22 to approach the first clamping piece 21 by the first driving piece, so as to clamp the first calibration piece. The first calibration piece is a standard PIN.

[0064] S2. The spindle moves to the mechanical zero position, and detects whether the coaxiality between the first calibration piece and the spindle is within the error range. If not, adjust the position of the first calibration piece to be coaxial with the spindle.

[0065] S3. Place a second calibration piece in each second clamping groove 33.

[0066] S4. The processing machine 200 moves along the first direction and detects whether the straightness between the first calibration part and the second calibration part is within the error range. If not, the position of the second calibration part is adjusted to be in the same straight line as the first calibration part; and / or detects whether the straightness between adjacent second calibration parts is within the error range. If not, the position of the second calibration part is adjusted to be in the same straight line as the adjacent second calibration parts.

[0067] In this embodiment, the position of the first clamping groove 23 is calibrated by the first calibration piece. After the position of the first clamping groove 23 is determined, the first calibration piece in the first clamping groove 23 is used as a reference. When the processing machine 200 is driven to move along the first direction, the micrometer draws a line along the first direction, and a two-point calibration method is used in which a straight line is formed between the first calibration piece and the second calibration piece or between two adjacent second calibration pieces. The second clamping groove 33 is calibrated so that its straightness meets the requirements.

[0068] The mounting plate 1 is provided with a plurality of second clamping grooves 33, and at least one second calibration piece is placed in each second clamping groove 33. By using a micrometer to draw a line between each second calibration piece and the first calibration piece or between two adjacent second calibration pieces, each second clamping groove 33 can be calibrated. And because the size of each second clamping groove 33 in the first direction is small, the distance between the first calibration piece and the second calibration piece is reduced, and the distance between adjacent second calibration pieces is small, so that the difficulty of calibration can be reduced and the calibration accuracy can be improved.

[0069] In one embodiment, the PCB processing equipment includes a micrometer. In step S2, the step of driving the spindle to move to the mechanical zero position and detecting whether the coaxiality of the first calibration piece and the spindle is within the error range specifically includes: Install the micrometer on the spindle and drive the spindle to move to the mechanical zero position. The target position of the first clamping groove 23 is the mechanical zero position, and the first direction is the Y axis to set the XY coordinate system. The coordinates of the mechanical zero position in the XY coordinate system are (0, 0).

[0070] The dial gauge head is overlapped on the first calibration piece, and the dial gauge rotates around the first calibration piece with the position of the main shaft as the reference to obtain whether the needle jump range of the dial gauge is within the first error range. Since the first calibration piece is a standard PIN pin and is cylindrical, when the dial gauge rotates around the first calibration piece, it can avoid the error of the first calibration piece itself affecting the measurement of the dial gauge.

[0071] The position of the first clamping groove 23 is adjusted according to the needle jump range of the micrometer so that the position of the first calibration piece is coaxial with the main shaft.

[0072] In this embodiment, after the spindle moves to the mechanical zero position, the spindle rotation can drive the micrometer to rotate around the first calibration piece, so that the coaxiality of the spindle and the first calibration piece can be detected, and then it can be determined whether the first calibration piece and the first clamping groove 23 are located at the mechanical zero position. When the first clamping groove 23 is located at the mechanical zero position, the center axis of the first calibration piece almost coincides with the center axis of the spindle. In the process of the spindle driving the micrometer to rotate, it is equivalent to rotating around the center axis of the first calibration piece. The range of needle jump is very small. When the first clamping groove 23 is not at the mechanical zero position, the range of needle jump is slightly larger, so as to judge the position of the first clamping groove 23 and make subsequent adjustments until the position of the first calibration piece is coaxial with the spindle.

[0073] In one embodiment, in step S2, when detecting whether the coaxiality between the first calibration piece and the spindle is within the error range, the first error range of the micrometer is ≤±0.005mm, and the dial gauge head has a reading when it overlaps the first calibration piece. During the rotation of the micrometer around the first calibration piece, if the range of the needle's jump does not exceed the range of ±0.005mm of the reading, it indicates that the needle's jump range of the micrometer is within the first error range. If the needle's jump range exceeds the range of ±0.005mm of the reading, it indicates that the position accuracy of the first calibration piece does not meet the requirements, that is, 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.

[0074] It is understandable 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 around the first calibration piece for one circle, and the dial gauge needle is read to determine whether the first clamping groove 23 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, it can be known that the target position of the first clamping groove 23 is the mechanical zero position.

[0075] In one embodiment, the PCB processing equipment includes a micrometer. In step S4, driving the processing machine 200 to move along 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: Install the dial indicator on the crossbar.

[0076] The dial gauge head is overlapped on the first calibration piece, and when the processing machine 200 moves along 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. As the processing machine 200 moves, the dial gauge can overlap with the second calibration piece, and in the process of the dial gauge drawing a straight line, it is obtained whether the needle jump range of the dial gauge is within the second error range.

[0077] The position of the second clamping groove 33 is adjusted according to the needle jump range of the micrometer so that the position of the second calibration piece is in the same straight line as the first calibration piece.

[0078] In this embodiment, the first direction is the Y-axis, the first calibration piece is a standard PIN pin, and is cylindrical. The first calibration piece has a section extending along the Y-axis, and the section is used as a reference plane. The second calibration piece has a calibration surface. As the processing machine 200 moves, the head of the micrometer can overlap the reference plane and the calibration surface in turn.

[0079] After the first clamping groove 23 is calibrated in step S1 and step S2, it can be ensured that the reference surface is located on the Y axis. The reading when the dial gauge head overlaps the reference surface is used as a reference. Through the processing machine 200 moving along the Y axis, the dial gauge head can move on the calibration surface. Through the range of needle jump when the dial gauge head overlaps 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, that is, when the position of the second calibration part is in the same straight line as the first calibration part, when the dial gauge head moves from the reference surface to the calibration surface, the range of needle jump of the dial gauge is very small. If the calibration surface is not on the Y axis, that is, when the position of the second calibration part is not in the same straight line as the first calibration part, the range of needle jump of the dial gauge is slightly larger, so as to calibrate and adjust the position of the second clamping groove 33.

[0080] In one 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, a second calibration piece is placed at each end of the second clamping groove 33.

[0081] In one embodiment, in step S4, when detecting whether the straightness between the first calibration piece and the second calibration piece is within the error range, in the process of the micrometer drawing a straight line, the second error range of the micrometer is ≤±0.01mm, and the head of the micrometer has a reading when it overlaps the first calibration piece. When the micrometer moves linearly along the first direction, when the micrometer moves to the second calibration piece, the needle jump range of the micrometer is observed. If the needle jump range does not exceed the range of ±0.01mm of the reading, it indicates that the needle jump range of the micrometer is within the second error range. If the needle jump range exceeds the range of ±0.01mm 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.

[0082] After the adjustment is completed in step S4, the dial gauge head can be overlapped on the second calibration piece again, the dial gauge is moved and the dial gauge needle is observed to read 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, it can be known that the target position of the second clamping groove 33 is the Y axis.

[0083] In one embodiment, the PCB processing equipment includes a micrometer, and in step S4, detecting whether the straightness between adjacent second calibration pieces is within an error range specifically includes: Install the dial indicator on the crossbar.

[0084] When the processing machine 200 moves along the first direction, the micrometer moves relative to the positioning device 100 in the first direction, so that the dial gauge head can draw a straight line on the positioning device 100. Among the adjacent second calibration pieces, the dial gauge head is overlapped on one of the second calibration pieces, and as the processing machine 200 moves, the micrometer is overlapped with the other second calibration piece. In the process of the micrometer drawing a straight line, it is obtained whether the needle jump range of the micrometer is within the third error range.

[0085] The position of each second clamping groove 33 is adjusted according to the needle jump range of the micrometer so that adjacent second calibration pieces are located in the same straight line.

[0086] In this embodiment, when the straightness of the plurality of second clamping grooves 33 is corrected, a second calibration piece is placed in each second clamping groove 33, and one of the second calibration pieces can be first calibrated by the first calibration piece to ensure that the second calibration piece is located on the Y-axis.

[0087] Next, the surface of the calibrated second calibration piece is used as the reference surface, and the surfaces of the remaining second calibration pieces are used as calibration surfaces. As the processing machine 200 moves, the dial indicator head can overlap the reference surface and the calibration surface in sequence.

[0088] Taking the reading when the dial gauge head overlaps with the reference surface as a reference, the dial gauge head can be moved on the calibration surface through the processing machine 200 that moves along the Y-axis. Through the range of needle jump when the dial gauge head overlaps 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, that is, when the position of the second calibration part is in the same straight line as the first calibration part, when the dial gauge head moves from the reference surface to the calibration surface, the range of needle jump of the dial gauge is very small. If the calibration surface is not on the Y-axis, that is, when the position of the second calibration part is not in the same straight line as the first calibration part, the range of needle jump of the dial gauge is slightly larger, so as to calibrate and adjust the position of the second clamping groove 33.

[0089] In one embodiment, in step S4, when detecting whether the straightness between adjacent second calibration pieces is within the error range, in the process of the micrometer drawing a straight line, the third error range of the micrometer is ≤±0.01mm, and the head of the micrometer has a reading when it overlaps one of the second calibration pieces. When the micrometer moves linearly along the first direction, when the micrometer moves to another second calibration piece, the needle jump range of the micrometer is observed. If the needle jump range does not exceed the range of ±0.01mm of the reading, it indicates that the needle jump range of the micrometer is within the third error range. If the needle jump range exceeds the range of ±0.01mm of the reading, it indicates that the straightness of the two adjacent second calibration pieces does not meet the requirements, that is, the straightness of the plurality of second clamping grooves 33 does not meet the requirements, and the position of the second clamping grooves 33 needs to be adjusted.

[0090] 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 ensure that the XY coordinate system of the PCB coincides with the XY coordinate system on the positioning device 100, which greatly reduces the problem of misalignment of the processing holes on the PCB, reduces the scrapping of PCB, and realizes the TWOPIN operation of the PCB mechanical drilling machine.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning device for positioning a material plate, the material plate comprising a first pin and a second pin spaced apart along a first direction, characterized in that: It comprises a mounting plate, a first clamping assembly and a plurality of second clamping assemblies, wherein the first clamping assembly and the second clamping assembly are mounted on the mounting plate; The first clamping assembly is provided with a first clamping groove, and the first clamping groove is used to limit the first pin; Each of the second clamping components is provided with a second clamping groove, the second clamping groove extends along the first direction, and the first clamping groove and a plurality of the second clamping grooves are located on the same straight line, and the second clamping groove is used to clamp the second pin.

2. The positioning device according to claim 1, characterized in that The first clamping assembly includes a first clamping member and a second clamping member. A notch is provided on one side of the first clamping member close to the second clamping member. The first clamping groove is formed between the notch and an end of the second clamping member close to the first clamping member.

3. The positioning device according to claim 2, characterized in that: The mounting plate is provided with a first receiving groove and a second receiving groove which are interconnected, the first clamping member is arranged in the first receiving groove, and the second clamping member is movably connected in the second receiving groove; The first clamping groove is located at the junction of the first accommodating groove and the second accommodating groove.

4. The positioning device according to claim 2, characterized in that: The first clamping assembly also includes a first driving member, the first clamping member is mounted on the mounting plate, the output end of the first driving member is connected to the second clamping member, and the first driving member can drive the second clamping member to approach or move away from the first clamping member to clamp or release the first pin.

5. The positioning device according to claim 1, characterized in that: The second clamping groove is in a strip shape.

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

7. The positioning device according to claim 6, characterized in that: The mounting plate is provided with a plurality of third accommodating grooves, and the plurality of the second clamping assemblies and the plurality of the third accommodating grooves are arranged in one-to-one correspondence; The third clamping member and the fourth clamping member are disposed in the third accommodating groove, and at least the fourth clamping member can move along the third accommodating groove.

8. The positioning device according to claim 6, characterized in that: The second clamping assembly also includes a second driving member, the third clamping member is installed on the mounting plate, the output end of the second driving member is connected to the fourth clamping member, and the second driving member can drive the fourth clamping member to approach or move away from the third clamping member to clamp or release the second pin.

9. The positioning device according to claim 8, characterized in that: The second clamping assembly further includes a plurality of adjusting members, the fourth clamping member is provided with a plurality of adjusting holes, each of the adjusting members passes through the corresponding adjusting hole and is connected to the mounting plate; When the second driving member drives the fourth clamping member to move, the adjusting member can move relative to the adjusting hole.

10. The positioning device according to claim 1, characterized in that: 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.

11. The positioning device according to claim 1, characterized in that: 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.

12. The positioning device according to claim 1, characterized in that: The mounting plate includes a first sub-plate and a second sub-plate which are separately arranged. The first clamping assembly is arranged on the first sub-plate, and the second clamping assembly is arranged on the second sub-plate. The relative position between the first sub-plate and the second sub-plate can be changed.

13. A PCB processing equipment, characterized in that: It includes a processing machine, a crossbeam, a spindle and the positioning device according to any one of claims 1 to 12, wherein the crossbeam is mounted on the processing machine, the positioning device is installed on the processing machine, the spindle is slidably connected to the crossbeam along a second direction, and the spindle is used to process the material plate placed on the mounting plate.

14. A PCB processing equipment calibration method, characterized in that: The PCB processing equipment according to claim 13 comprises: placing a first calibration piece in the first clamping groove; The spindle moves to a mechanical zero position, and detects whether the coaxiality between the first calibration piece and the spindle is within an error range. If not, the position of the first calibration piece is adjusted to be coaxial with the spindle; placing a second calibration piece in each of the second clamping grooves; The processing machine moves along the first direction and detects whether the straightness between the first calibration piece and the second calibration piece is within an error range. If not, the position of the second calibration piece is adjusted to be in the same straight line as the first calibration piece; and / or detects whether the straightness between adjacent second calibration pieces is within an error range. If not, the position of the second calibration piece is adjusted to be in the same straight line with adjacent second calibration pieces.

15. The PCB processing equipment calibration method according to claim 14, characterized in that: The PCB processing equipment includes a micrometer, the spindle moves to a mechanical zero position, and the step of detecting whether the coaxiality of the first calibration piece and the spindle is within an error range specifically includes: The micrometer is installed on the spindle, and the spindle is moved to the mechanical zero position; Overlapping the dial gauge head on the first calibration piece, and rotating the dial gauge around the first calibration piece for one circle to determine whether the needle jump range of the dial gauge is within a first error range; The position of the first clamping groove is adjusted according to the needle jump range of the micrometer so that the position of the first calibration part is coaxial with the main shaft.

16. The PCB processing equipment calibration method according to claim 14, characterized in that: The PCB processing equipment includes a micrometer, the processing machine moves along the first direction, and detecting whether the straightness between the first calibration piece and the second calibration piece is within an error range specifically includes: Install the micrometer on the beam or the spindle; The dial gauge head is overlapped on the first calibration piece; The processing machine moves along the first direction so that the micrometer overlaps with the second calibration piece, and obtains whether the needle jump range of the micrometer is within a second error range; The position of the second clamping groove is adjusted according to the needle jump range of the micrometer so that the position of the second calibration part is in the same straight line as the first calibration part.

17. The PCB processing equipment calibration method according to claim 14, characterized in that: The PCB processing equipment includes a micrometer, and the detecting whether the straightness between adjacent second calibration pieces is within the error range specifically includes: Install the micrometer on the beam or the spindle; Among the adjacent second calibration pieces, the dial gauge head is overlapped on one of the second calibration pieces; The processing machine moves along the first direction so that the micrometer overlaps with another second calibration piece, and obtains whether the needle jump range of the micrometer is within a third error range; The position of each of the second clamping grooves is adjusted according to the needle jump range of the micrometer so that adjacent second calibration parts are located in the same straight line.

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