PCB milling cutter side clamping tool holder mechanism

Abstract

The utility model relates to a kind of PCB milling cutter side clamping fixed tool rest mechanism, comprising: base subassembly, top is equipped with stop block;Drive device, its drive end extends along horizontal transverse direction;And clamping block, be equipped on the drive end of the drive device, the recessed installation slot is equipped in the one side of the clamping block towards the stop block, the installation slot has first pressure surface and second pressure surface;The drive device drives the clamping block towards the stop block movement, makes the installation slot with the stop block cooperation and milling cutter clamping, and the first clamping surface and milling cutter top surface resist pressure, the second clamping surface and milling cutter bottom surface resist pressure.This kind of PCB milling cutter side clamping fixed tool rest mechanism can effectively improve the stability and processing quality of milling cutter in processing process.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter processing technology, and in particular to a PCB milling cutter side clamping and fixing tool holder mechanism. Background Technology

[0002] In the printed circuit board (PCB) manufacturing process, the shaping of milling cutters is a crucial step that directly affects the precision of PCB processing and the overall performance of the machine. Typically, the milling cutter processing flow includes: pre-processing the raw bar stock, grinding it to the required diameter, and fixing it with a clamping mechanism for subsequent grinding or lapping operations.

[0003] Please see Figure 1 In the prior art, clamping mechanisms mostly adopt pneumatically driven clamping devices, whose structure generally includes: an inclined cylinder 1", a drive block 2" connected to the drive end of the cylinder, and a pressure plate 3" set at the front end of the drive block. The cylinder 1" drives the drive block 2" to move forward by pushing upward, thereby driving the pressure plate 3" to press the milling cutter 100" into the positioning groove of the clamping seat, thereby fixing the milling cutter 100".

[0004] However, in actual use, because the clamping plate 3" uses the unidirectional thrust generated by the inclined cylinder 1" to vertically clamp and fix the milling cutter 100", when grinding is performed along the length of the milling cutter 100" (the grinding wheel rotates and advances vertically), the milling cutter 100" is prone to runout in the horizontal transverse direction (the length direction of the milling cutter is the horizontal longitudinal direction) under stress. This runout not only reduces the machining accuracy, resulting in unqualified surface roughness of the milling cutter 100" and circular runout error of the milling cutter 100", but also causes uneven wear on the grinding wheel, shortens the service life of the grinding wheel, and increases production costs and equipment maintenance frequency. Utility Model Content

[0005] Therefore, it is necessary to provide a PCB milling cutter side clamping and fixing tool holder mechanism that can effectively improve the stability and machining quality of milling cutters during the milling process, addressing the problems of poor clamping stability, easy runout, and poor machining consistency during milling.

[0006] A PCB milling cutter side clamping and fixing tool holder mechanism, comprising:

[0007] The base assembly has a stop at the top;

[0008] The drive unit, the drive end of which extends laterally in a horizontal direction; and

[0009] A clamping block is provided on the driving end of the driving device. The side of the clamping block facing the stop is recessed with a mounting groove. The mounting groove has a first pressing surface and a second pressing surface. The driving device drives the clamping block to move toward the stop, so that the mounting groove cooperates with the stop to clamp the milling cutter. The first clamping surface abuts against the top surface of the milling cutter, and the second clamping surface abuts against the bottom surface of the milling cutter.

[0010] The aforementioned PCB milling cutter side clamping and fixing tool holder mechanism can drive the clamping block to move closer to the stop block through the driving device, and make the mounting groove of the clamping block cooperate with the stop block to clamp the milling cutter horizontally. In addition, the first and second pressing surfaces of the mounting groove can cooperate to clamp and position the milling cutter vertically, forming a three-point contact positioning of the milling cutter cylinder, that is, positioning in both vertical and horizontal directions. This ensures that the milling cutter will not jump horizontally during grinding, effectively improving the stability and processing quality of the milling cutter during the processing.

[0011] In one embodiment, the connection between the first clamping surface and the second clamping surface makes the mounting groove a V-shaped groove. This makes the vertical clamping structure for the milling cutter simpler and more effective.

[0012] In one embodiment, the base assembly includes a slide rail extending laterally in a horizontal direction, the driving device includes a driving member and a slider, the slider is disposed on the driving end of the driving member, and the slider is slidably connected to the slide rail, and the clamping block is fixedly disposed on the slider. This ensures more stable movement when the clamping block moves close to the stop block.

[0013] In one embodiment, the slide rail is a dovetail slide, and the slider has a dovetail groove recessed on one side, which slides in conjunction with the dovetail slide. This makes the sliding engagement between the slider and the slide rail more stable and less prone to disengagement.

[0014] In one embodiment, the base assembly includes a stand, the top of which is provided with the stop block, and the slide rail is provided on one side of the stand.

[0015] In one embodiment, the stand has a movable groove extending to the stop block, the clamping block is located on the side of the slider near the stand, and the clamping block is located in the movable groove.

[0016] In one embodiment, the base assembly further includes a base and a connecting plate. The connecting plate includes a first plate and a second plate that are perpendicular to each other. The first plate is mounted on the base, and the second plate is fixedly connected to the upright. This ensures the verticality of the upright, thereby preventing tilting when the clamping block and the stop block cooperate to clamp the milling cutter, resulting in higher clamping position accuracy.

[0017] In one embodiment, the base assembly further includes a fixing plate and a limiting block. The limiting block is movably mounted on the base in a horizontal direction and abuts against one end of the first plate. The base has protrusions spaced horizontally from the limiting block. The opposite ends of the fixing plate abut against the other end of the first plate and the protrusions, respectively. After the milling cutter has finished machining the diameter at the previous station, it is moved to the machining position and positioned by the grippers. Through the cooperation of the fixing plate and the limiting block, the position of the connecting plate and the stand in the horizontal direction can be adjusted according to the position of the milling cutter, so that the center point of the mounting groove and the stop block coincides with the center point of the milling cutter, without any lateral deviation, thus better ensuring the accuracy of the milling cutter positioning and machining.

[0018] In one embodiment, one end of the first plate is recessed inward and has a positioning groove that matches the structure of the mounting groove. One end of the fixing plate has a step at its bottom that abuts against the protrusion, and the other end of the fixing plate abuts against the positioning groove. The abutting fit between the first plate and the positioning groove makes the positioning of the connecting plate more secure, preventing the connecting plate and the stand from jumping up and down due to the force generated during the milling process, which would affect the accuracy of the milling process positioning.

[0019] In one embodiment, a probe sensor is further included on top of the base assembly. The probe sensor is adjacent to the milling cutter clamping position, and its top surface has a sensing position for detecting whether the diameter dimension of the milling cutter at the previous station is qualified. The probe sensor effectively detects whether the milling at the previous station is qualified, preventing dimensional defects after milling. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an existing clamping device;

[0021] Figure 2 This is a schematic diagram of the structure of an embodiment of the positioning mechanism of this utility model;

[0022] Figure 3 This is an exploded structural diagram of the positioning mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the disassembled clamping structure of this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 100. PCB milling cutter side clamping and fixing tool holder mechanism; 1. Base assembly; 11. Base; 111. Protrusion; 12. Connecting plate; 121. First plate; 122. Second plate; 123. Positioning groove; 13. Stand; 131. Movable groove; 14. Slide rail; 15. Fixing plate; 151. Step; 152. Waist-shaped groove; 16. Limiting block; 2. Drive device; 21. Cylinder; 22. Slider; 221. Dovetail groove; 3. Clamping block; 31. Mounting groove; 4. Stop block; 5. Probe sensor; 200. Milling cutter. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described clearly and completely below with reference to the accompanying drawings. Obviously, the specific details described below are only a part of the embodiments of this utility model, and this utility model can be implemented in many other embodiments different from those described herein. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] Please see Figures 2 to 4 In one embodiment, a PCB milling cutter side clamping and fixing tool holder mechanism 100 includes: a base assembly 1, a driving device 2, and a clamping block 3. A stop block 4 is provided on the top of the base assembly 1. The driving end of the driving device 2 extends horizontally. The clamping block 3 is disposed on the driving end of the driving device 2, and a mounting groove 31 is recessed on the side of the clamping block 3 facing the stop block 4. The mounting groove 31 has a first pressing surface and a second pressing surface. The driving device 2 can drive the clamping block 3 to move towards the stop block 4, so that the mounting groove 31 cooperates with the stop block 4 to clamp the milling cutter 200, with the first clamping surface pressing against the top surface of the milling cutter 200 and the second clamping surface pressing against the bottom surface of the milling cutter 200.

[0030] The aforementioned PCB milling cutter side clamping and fixing tool holder mechanism 100 can drive the clamping block 3 to move closer to the stop block 4 through the driving device 2, and make the mounting groove 31 of the clamping block 3 cooperate with the stop block 4 to clamp the milling cutter 200 horizontally. In addition, the first pressing surface and the second pressing surface of the mounting groove 31 can cooperate to clamp and position the milling cutter 200 vertically, forming a three-point contact positioning of the cylindrical body of the milling cutter 200, that is, positioning in both vertical and horizontal directions. This ensures that the milling cutter 200 will not jump horizontally during grinding, effectively improving the stability and processing quality of the milling cutter 200 during the processing.

[0031] Please see Figure 3 and Figure 4 In one embodiment, the connection between the first clamping surface and the second clamping surface makes the mounting groove 31 form a V-shaped groove, which makes the clamping structure of the milling cutter 200 in the vertical direction simpler and more effective.

[0032] In one embodiment, the base assembly 1 includes a base 11, a connecting plate 12 and a stand 13. The connecting plate 12 is connected to the base 11 and the stand 13 respectively. The stand 13 is arranged vertically, and the stop block 4 is located on the top of the stand 13.

[0033] To ensure more stable movement of the clamping block 3 when it approaches the stop block 4, a slide rail 14 extends horizontally along one side of the upright frame 13. The driving device 2 includes a cylinder 21 and a slider 22. The slider 22 is mounted on the piston rod of the driving component and is slidably connected to the slide rail 14. The clamping block 3 is fixedly mounted on the slider 22. The cylinder 21 is model CDQ2B25-5DMZ.

[0034] Please see Figure 3 Furthermore, the slide rail 14 is a dovetail slide, and the slider 22 is recessed on one side along the longitudinal direction with a dovetail groove 221. The dovetail groove 221 slides in cooperation with the dovetail slide, which makes the sliding cooperation between the slider 22 and the slide rail 14 more stable and less likely to disengage.

[0035] In another embodiment, the support frame 13 is provided with a movable groove 131 extending to the stop block 4, and the clamping block 3 is provided on the side of the slider 22 near the support frame 13, and the clamping block 3 is located in the movable groove 131.

[0036] In one embodiment, the connecting plate 12 includes a first plate 121 and a second plate 122 that are perpendicular to each other. The first plate 121 is mounted on the base 11, and the second plate 122 extends vertically and is fixedly connected to the stand 13. This ensures the verticality of the stand 13, thereby ensuring that when the clamping block 3 and the stop block 4 cooperate to clamp the milling cutter 200, it is not easy for it to tilt, and the clamping position accuracy is higher.

[0037] Please see Figure 2 and Figure 3The base assembly 1 also includes a fixing plate 15 and a limiting block 16. The limiting block 16 has multiple holes, and the base 11 has multiple threaded holes. Screws pass through different holes and connect to the threaded holes of the base 11, allowing the limiting block 16 to be movably mounted on the base 11 in a horizontal direction. The base 11 has protrusions 111 spaced horizontally from the limiting block 16. The first plate 121 has a left end and a right end in a horizontal direction. The limiting block 16 abuts against the right end of the first plate 121, and the opposite ends of the fixing plate 15 abut against the left end of the first plate 121 and the protrusions 111, respectively. After the milling cutter 200 has finished machining the diameter at the previous station, it will be moved to the machining position and positioned by the gripper. Through the cooperation of the fixing plate 15 and the limiting block 16, the horizontal position of the connecting plate 12 and the stand 13 can be adjusted according to the position of the milling cutter 200, so that the center point of the mounting groove 31 and the stop block 4 coincides with the center point of the milling cutter 200, and there will be no lateral deviation, which better ensures the positioning and machining accuracy of the milling cutter 200.

[0038] Furthermore, the left end of the first plate 121 is recessed inward and has a positioning groove 123 (V-groove) with the same structure as the mounting groove 31. One end of the fixing plate 15 has a step 151 at the bottom that abuts against the protrusion 111, and the other end of the fixing plate 15 abuts against the positioning groove 123. The fixing plate 15 has a waist-shaped groove 152 extending laterally, which is locked with the base 11 with screws, allowing the fixing plate 15 to be adjusted laterally. The abutting fit between the first plate 121 and the positioning groove 123 makes the positioning of the connecting plate 12 more secure, preventing the connecting plate 12 and the stand 13 from jumping up and down due to the force generated by the grinding of the milling cutter 200, thus affecting the positioning accuracy of the milling cutter 200.

[0039] Please see Figure 2 and Figure 4 In another embodiment, the PCB milling cutter side clamping and fixing tool holder mechanism 100 further includes a probe sensor 5 disposed on the top of the stand 13. The probe sensor 5 is adjacent to the clamping position of the milling cutter 200, and the top surface of the probe sensor 5 is provided with a sensing position, which is used to detect whether the diameter dimension of the milling cutter 200 in the previous station is qualified. The probe sensor 5 is model P11DMB-DLD. When the outer surface of the milling cutter 200 is exactly tangent to the sensing position, it indicates that the diameter dimension of the milling cutter 200 is qualified. When the milling cutter 200 presses down on the sensing position, it is determined that it does not conform to the set qualified dimension. This effectively avoids damage to the grinding wheel and the production of defective products caused by the unqualified milling cutter 200 in the next station. The sensing position is set to be elastic, can be pressed down and automatically reset.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications, substitutions, and improvements without departing from the concept of this utility model, and these should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the claims.

Claims

1. A PCB milling cutter side clamping and fixing tool holder mechanism, characterized in that, include: The base assembly has a stop at the top; A drive unit, the drive end of which extends horizontally; and A clamping block is provided on the driving end of the driving device. The side of the clamping block facing the stop is recessed with a mounting groove. The mounting groove has a first pressing surface and a second pressing surface. The driving device drives the clamping block to move toward the stop, so that the mounting groove cooperates with the stop to clamp the milling cutter. The first pressing surface abuts against the top surface of the milling cutter, and the second pressing surface abuts against the bottom surface of the milling cutter.

2. The PCB milling cutter side clamping and fixing tool holder mechanism according to claim 1, characterized in that, The connection between the first pressing surface and the second pressing surface makes the mounting groove form a V-shaped groove.

3. The PCB milling cutter side clamping and fixing tool holder mechanism according to claim 1, characterized in that, The base assembly includes a slide rail extending horizontally, the driving device includes a driving member and a slider, the slider is disposed on the driving end of the driving member and is slidably connected to the slide rail, and the clamping block is fixedly disposed on the slider.

4. The PCB milling cutter side clamping and fixing tool holder mechanism according to claim 3, characterized in that, The slide rail is in the shape of a dovetail slide, and a dovetail groove is recessed on one side of the slider, which slides in conjunction with the dovetail slide.

5. The PCB milling cutter side clamping and fixing tool holder mechanism according to claim 3, characterized in that, The base assembly includes a stand, the top of which is provided with the stop block, and the slide rail is provided on one side of the stand.

6. The PCB milling cutter side clamping and fixing tool holder mechanism according to claim 5, characterized in that, The upright frame is provided with a movable groove extending to the stop block, and the clamping block is located on the side of the slider near the upright frame, and the clamping block is located in the movable groove.

7. The PCB milling cutter side clamping and fixing tool holder mechanism according to claim 5, characterized in that, The base assembly also includes a base and a connecting plate. The connecting plate includes a first plate and a second plate that are perpendicular to each other. The first plate is installed on the base, and the second plate is fixedly connected to the upright.

8. The PCB milling cutter side clamping and fixing tool holder mechanism according to claim 7, characterized in that, The base assembly further includes a fixing plate and a limiting block. The limiting block is movably disposed on the base in a horizontal direction and abuts against one end of the first plate. The base is provided with protrusions spaced apart from the limiting block in a horizontal direction. The opposite ends of the fixing plate abut against the other end of the first plate and the protrusions, respectively.

9. The PCB milling cutter side clamping and fixing tool holder mechanism according to claim 8, characterized in that, One end of the first plate is recessed inward and has a positioning groove that is consistent with the structure of the mounting groove. One end of the fixing plate has a step at the bottom that abuts against the protrusion. The other end of the fixing plate abuts against the positioning groove.

10. The PCB milling cutter side clamping and fixing tool holder mechanism according to any one of claims 1 to 9, characterized in that, It also includes a probe sensor located on the top of the base assembly. The probe sensor is adjacent to the milling cutter clamping position. The top surface of the probe sensor has a sensing position and is used to detect whether the diameter dimension of the milling cutter at the previous station is qualified.

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