Stable grinding clamp for PCB drill bit milling cutter
By designing a stable grinding fixture including a self-locking motor and a buffer pad, the problem of unstable grinding of drilling tip milling cutters in the prior art is solved, and stable fixation and efficient grinding of small-diameter drilling tip milling cutters are achieved.
Patent Information
- Application Number
- CN202421782956.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The existing drilling and milling fixtures are unstable during the grinding process and cannot provide continuous pressure, resulting in poor grinding results.
A stable grinding fixture including a housing, power assembly, disc, slider, guide rod, elastic member, clamp, limit nail and transmission rod is designed to lock the clamping component through a self-locking motor to continuously provide pressure and optimize the fixing effect through a cushion.
The stable fixation of the small-diameter PCB drilling and tip milling cutter is achieved, which avoids movement during the grinding process, continuously provides pressure, and improves the stability and effect of grinding.
Smart Images
Figure CN222843847U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of drill bit grinding, in particular to a PCB drill bit milling cutter stable grinding fixture. Background Art
[0002] Drill bits and milling cutters are important tools in PCB processing, mainly used for drilling holes so that PCB boards can complete the various functions and performances required by their design. Since the drill bits used for processing PCB boards are small in size, they are prone to wear and even defects during use. In order to reduce the frequency of replacing drill bits, the worn drill bits are ground. However, the existing fixtures are relatively large, unstable when clamping, and it is difficult to fix the PCB processing drill bits. In addition, friction will be generated on the drill bit and milling cutter during the grinding process. The existing ones cannot provide continuous pressure after being fixed, and may rotate during grinding, resulting in poor grinding effect. Utility Model Content
[0003] In order to overcome the shortcomings that the fixing fixture is large and cannot continuously provide pressure during grinding, the utility model provides a PCB drill bit milling cutter stable grinding fixture.
[0004] A PCB drill bit and milling cutter stable grinding fixture comprises a shell, a power assembly, a disk one, a slider, a guide rod, an elastic member, a clamping plate a, a disk four, a limiting nail and a transmission rod. The disk one is arranged at the front end of the shell, and the power assembly for energy supply is arranged in the shell. The disk four is connected to the right end of the power assembly, and a limiting nail is arranged at the right end of the disk four. One end of the transmission rod is rotatably connected to the limiting nail, and the other end is rotatably connected to the left end of the slider, and the slider is slidably connected in the disk one, the guide rod is slidably connected to the slider, and a clamping plate a is arranged at the inner end of the guide rod. The elastic member is sleeved on the guide rod and is located between the slider and the clamping plate a, and a through hole is opened between the disk one and the disk four.
[0005] More preferably, the power assembly includes a self-locking motor, a transmission gear, a connecting rod, a disk two and a gear plate. The self-locking motor is arranged inside the shell, and a transmission gear is arranged at the front end of the output shaft at the right end of the self-locking motor. Disk two is rotatably connected in the middle of the shell, a gear plate is arranged at the left end of disk two, the gear plate is meshed with the transmission gear, a connecting rod is arranged at the right end of disk two, and the right end of the connecting rod is connected to disk four.
[0006] More preferably, an irregular groove is provided on the outer side of the shell.
[0007] More preferably, the clamping assembly includes a slider, a guide rod, an elastic member, a splint a, a disk four, a limit pin and a transmission rod, a disk four is fixedly connected to the right end of the connecting rod, and the right end of the disk four is fixedly connected to the limit pin, one end of the transmission rod is rotatably connected to the limit pin, and the other end is rotatably connected to the left end of the slider, and the slider is slidably connected in the disk one, the guide rod is slidably connected to the slider, a splint a is fixedly connected to the inner end of the guide rod, and the elastic member is sleeved on the guide rod and is located between the slider and the splint a.
[0008] More preferably, it also includes a center rod, disk three, a sliding rod, a splint b and a guide block, the left end of the center rod is fixedly connected to the middle part of the shell, the center rod passes through the center of disk two, disk three is connected to the right end of the center rod, a curved groove is opened at the left end of disk four, the sliding rod is slidably connected in the curved groove at the left end of disk four, the right side of splint b is rotatably connected to the sliding rod, a guide block is set at the top left side of splint b, and the guide block is slidably connected in disk three.
[0009] More preferably, the material of the disk three is a magnetic sheet.
[0010] More preferably, a buffer pad is further included, and a buffer pad is arranged on the inner side of the splint a and the splint b.
[0011] Compared with the prior art, the utility model has the following advantages:
[0012] 1. The utility model optimizes the fixing effect of the small-diameter PCB drill bit milling cutter by fixing at two places in the midsole, thereby increasing the stability during grinding, and locks the clamped parts through the self-locking motor, so that during grinding, it will not move and continuously provide pressure.
[0013] 2. The utility model increases the contact area and friction force with the drill bit and the milling cutter through the buffer pad, and can optimize the fixing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0015] Figure 2 It is a cross-sectional view of the utility model.
[0016] Figure 3 It is a left-side three-dimensional structure explosion diagram of the utility model.
[0017] Figure 4 It is a right-side three-dimensional structure explosion diagram of the utility model.
[0018] The markings of the components in the accompanying drawings are as follows: 1. Shell, 11. Self-locking motor, 12. Transmission gear, 13. Center rod, 2. Disc one, 21. Slider, 22. Guide rod, 23. Elastic member, 24. Clamp a, 3. Disc two, 31. Connecting rod, 32. Gear disc, 4. Disc three, 5. Disc four, 51. Sliding rod, 52. Clamp b, 53. Guide block, 54. Limit pin, 55. Transmission rod, 6. Buffer pad. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0020] Embodiment: A PCB drill bit milling cutter stable grinding fixture, such as Figure 1-Figure 4 As shown, it includes a shell 1, a power assembly, a disk 2, a slider 21, a guide rod 22, an elastic member 23, a splint a24, a disk 45, a limiting nail 54 and a transmission rod 55. A disk 2 is welded at the front end of the shell 1, and a power assembly for power supply is arranged in the shell 1. A disk 45 is connected to the right end of the power assembly, and a limiting nail 54 is welded to the right end of the disk 45. One end of the transmission rod 55 is rotatably connected to the limiting nail 54, and the other end is rotatably connected to the left end of the slider 21, and the slider 21 is slidably connected in the disk 2, the guide rod 22 is slidably connected to the slider 21, and a splint a24 is welded at the inner end of the guide rod 22. The elastic member 23 is sleeved on the guide rod 22 and is located between the slider 21 and the splint a24. A through hole is opened between the disk 2 and the disk 45, and an irregular groove is arranged on the outer side of the shell 1.
[0021] like Figure 2-Figure 4 As shown, the power assembly includes a self-locking motor 11, a transmission gear 12, a connecting rod 31, a disk 2 3 and a gear plate 32. The self-locking motor 11 is installed inside the housing 1, and the front end of the output shaft at the right end of the self-locking motor 11 is connected to the transmission gear 12 through a coupling. The disk 2 3 is rotatably connected in the middle of the housing 1, and a gear plate 32 is welded at the left end of the disk 2 3. The gear plate 32 is meshed with the transmission gear 12. A connecting rod 31 is welded at the right end of the disk 2 3, and the right end of the connecting rod 31 is connected to the clamping assembly.
[0022] like Figure 2-Figure 4As shown, it also includes a center rod 13, a disk three 4, a sliding rod 51, a splint b52 and a guide block 53. The left end of the center rod 13 is fixedly connected to the middle part of the shell 1, and the center rod 13 passes through the center of the disk two 3. The disk three 4 is connected to the right end of the center rod 13. A curved groove is opened at the left end of the disk four 5. The right end of the sliding rod 51 is slidably connected in the curved groove at the left end of the disk four 5. The right side of the splint b52 is rotatably connected to the sliding rod 51. A guide block 53 is welded on the top left side of the splint b52. The guide block 53 is slidably connected in the disk three 4. The material of the disk three 4 is a magnetic sheet.
[0023] The grinding personnel inserts the drill bit milling cutter to be ground into the through holes of disk 1 2 and disk 4 5, then turns on the self-locking motor 11, drives the transmission gear 12 to rotate, provides power for the gear disk 32, thereby rotating the disk 2 3, and drives the disk 4 5 to rotate through the connecting rod 31, drives the transmission rod 55 to rotate through the limit pin 54, and gathers toward the middle, pulls the slider 21 to move toward the middle, and the guide rod 22 and the clamping plate a24 squeeze the drill bit milling cutter to be ground toward the middle. After contacting the drill bit milling cutter, the slider 21 continues to move, and at this time compresses the elastic part 23, thereby providing pressure to the clamping plate a24, squeezing the drill bit milling cutter from all sides, aligning and fixing it from the middle part, and when the disk 4 5 rotates, due to the curved groove on the disk 4 5, the clamping plate b52 is driven to move toward the middle through the sliding rod 51, and the clamping plate b52 is guided by the guide block 53, and always keeps translation, thereby directly squeezing the drill bit milling cutter, aligning and fixing it from the bottom. The self-locking motor 11 can realize self-locking, so that during grinding, it cannot rotate under the action of external force, so that the drill bit and milling cutter remain in a fixed state, and the stability during grinding is optimized. After grinding, the self-locking motor 11 is turned on and reversed, so that the disk 2 3 and the disk 4 5 are reversed, and the clamping plate b52 is driven to move outward by the sliding rod 51, and the transmission rod 55 is driven to rotate in the opposite direction by the limit nail 54, so as to push the slider 21 to move outward. At this time, the elastic member 23 rebounds, and the transmission rod 55 continues to push to complete the reset of each component, thereby releasing the fixation of the drill bit and milling cutter, and the material of the disk 3 4 is a magnetic suction sheet, which can directly magnetically absorb the drill bit and milling cutter. When contacting and fixing, it will not fall directly when reversed, which further improves the protection of the drill bit and milling cutter.
[0024] like Figure 3 As shown, a buffer pad 6 is also included, and a buffer pad 6 is arranged on the inner side of the splint a24 and the splint b52.
[0025] When the clamping plates a24 and b52 clamp the drill bit and milling cutter, the buffer pad 6 can optimize the fixing effect.
[0026] Although the present disclosure has been shown and described with reference to specific exemplary embodiments of the present disclosure, it should be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-mentioned embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.
Claims
1. A PCB drill bit milling cutter stable grinding fixture, characterized in that: The invention comprises a housing (1), a power assembly, a disk (2), a slider (21), a guide rod (22), an elastic member (23), a clamping plate a (24), a disk (5), a limit pin (54) and a transmission rod (55). The disk (2) is arranged at the front end of the housing (1). The power assembly for supplying energy is arranged in the housing (1). The disk (5) is connected to the right end of the power assembly, and the limit pin (54) is arranged at the right end of the disk (5). One end of the transmission rod (55) is rotatably connected to the limit pin (54), and the other end is rotatably connected to the left end of the slider (21). The slider (21) is slidably connected in the disk (2). The guide rod (22) is slidably connected to the slider (21). The clamping plate a (24) is arranged at the inner end of the guide rod (22). The elastic member (23) is sleeved on the guide rod (22) and is located between the slider (21) and the clamping plate a (24). A through hole is opened in the middle of the disk 1 (2) and the disk 4 (5).
2. A PCB drill bit and milling cutter stable grinding fixture according to claim 1, characterized in that: The power assembly comprises a self-locking motor (11), a transmission gear (12), a connecting rod (31), a second disc (3) and a gear disc (32). The self-locking motor (11) is arranged inside a housing (1), and a transmission gear (12) is arranged at the front end of an output shaft at the right end of the self-locking motor (11). The second disc (3) is rotatably connected in the middle of the housing (1), and a gear disc (32) is arranged at the left end of the second disc (3). The gear disc (32) meshes with the transmission gear (12). A connecting rod (31) is arranged at the right end of the second disc (3), and the right end of the connecting rod (31) is connected to the fourth disc (5).
3. A PCB drill bit and milling cutter stable grinding fixture according to claim 2, characterized in that: An irregular groove is arranged on the outer side of the shell (1).
4. A PCB drill bit and milling cutter stable grinding fixture according to claim 3, characterized in that: The invention also comprises a center rod (13), a third disk (4), a sliding rod (51), a clamping plate b (52) and a guide block (53). The left end of the center rod (13) is fixedly connected to the middle part of the housing (1). The center rod (13) passes through the center of the second disk (3). The third disk (4) is connected to the right end of the center rod (13). A curved groove is provided at the left end of the fourth disk (5). The sliding rod (51) is slidably connected in the curved groove at the left end of the fourth disk (5). The right side of the clamping plate b (52) is rotatably connected to the sliding rod (51). A guide block (53) is provided at the top of the left side of the clamping plate b (52). The guide block (53) is slidably connected in the third disk (4).
5. A PCB drill bit and milling cutter stable grinding fixture according to claim 4, characterized in that: The material of the disk three (4) is a magnetic sheet.
6. A PCB drill bit and milling cutter stable grinding fixture according to claim 5, characterized in that: It also includes a buffer pad (6), and the buffer pad (6) is arranged on the inner side of the clamping plate a (24) and the clamping plate b (52).