A short hole and short slot positioning and deviation correction drilling device

Abstract

The utility model relates to a short hole and short slot positioning and correction drilling device. It comprises a drilling machine and a correction component. The drilling machine comprises a drill chuck which is rotatably connected to a machine body, a workbench which is liftably connected to the machine body, the drill chuck points to the workbench, the drill bit is detachably connected to the drill chuck, and the correction component comprises a fixed seat, a pipe straightening seat and a pipe straightening wheel. The fixed seat is detachably connected to the workbench, the pipe straightening seat is connected to the fixed seat, the pipe straightening wheel is detachably connected to the drill bit, a plurality of correction wheels which are distributed in a circular array with the drill bit as the rotation center are provided on the pipe straightening wheel, and a correction groove which cooperates with the outer wall of the pipe straightening wheel is provided on the pipe straightening seat. The utility model cooperates the correction groove on the pipe straightening seat with the correction wheel on the pipe straightening wheel. In the process of the rotation of the drill bit, the correction wheel abuts against the correction groove, so that the drill bit is forced to rotate with the rotation center defined by the correction groove, and the correction is performed on the drill bit, so as to avoid the situation of biased hole or biased slot when opening a hole or slot.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling, and in particular relates to a short hole and short slot positioning and deviation correction drilling device. Background Art

[0002] On a PCB, through holes drilled through the board can be used to achieve inner layer connections and / or component positioning and installation, etc. Among them, the holes used to fix component terminals (including pins and wires) to the PCB and / or achieve electrical connections are called component holes. Plated holes used for inner layer connections but not for inserting component leads or other reinforcing materials are called vias. There are two main purposes for drilling through holes on a PCB: one is to create an opening through the board, allowing subsequent processes to form electrical connections between the top layer, bottom layer, and inner layer circuits of the board; the other is to maintain structural integrity and position accuracy for the installation of components on the board.

[0003] In the past few decades of development in the PCB industry, the method of using mechanical drills to open holes has always been the mainstream technology. Mechanical drilling has withstood the growing demand for printed circuit boards and is still considered a safe and cost-effective method of opening holes. Of course, for circuit boards with small aperture requirements, laser drilling can also be used, but the cost is much higher.

[0004] However, when drilling holes or slots mechanically, if the coaxiality of the drill bit and the drill chuck is not consistent after installation, the drill bit will be eccentric during rotation, causing the opened hole or slot to be off-center. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a short hole and short slot positioning and correction drilling device, through the cooperation of the correction groove on the pipe straightening seat and the correction wheel on the pipe straightening wheel. During the rotation of the drill bit, the correction wheel abuts against the correction groove, forcing the drill bit to rotate about the rotation center defined by the correction groove, thereby correcting the drill bit and avoiding the occurrence of deviated holes or grooves when opening holes or slots.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A short hole and short slot positioning and deviation correction drilling device comprises a drilling machine and a deviation correction component, wherein the drilling machine comprises a machine body, a drill chuck, a drill bit and a workbench, wherein the drill chuck is rotatably connected to the machine body, the workbench is liftably connected to the machine body, the drill chuck points to the workbench, and the drill bit is detachably connected to the drill chuck; the deviation correction component comprises a fixed seat, a pipe straight seat, a pipe straight wheel and a pushing member, wherein the fixed seat is detachably connected to the workbench, the pushing member comprises a supporting seat, a pushing seat, a screw rod, a rotating wheel, a limiting column and a limiting groove, the supporting seat is fixedly connected to the fixed seat, and the lower end of the pushing seat is provided with A limiting column, a limiting groove is provided on the fixing seat, the pushing seat can be movably connected to the fixing seat through the cooperation of the limiting column and the limiting groove, the screw rod is engaged with the screw hole on the supporting seat, one end of the screw rod is connected to the pushing seat through a bearing, and the other end of the screw rod is fixedly connected to the rotating wheel, the pipe straight seat is connected to the pushing seat, the pipe straight wheel is detachably connected to the drill bit, the pipe straight wheel is provided with a plurality of correcting wheels distributed in a circular array with the drill bit as the rotation center, the pipe straight seat is provided with a correcting groove that cooperates with the outer side wall of the pipe straight wheel, and the pipe straight seat is provided with a distance sensor pointing to the drill bit.

[0008] The short hole and short slot positioning and deviation correction drilling device adopts this structure. The drilling machine is the most basic working structure. The drill bit is a small drill bit that can drill PCB boards. The upper end of the drill bit is clamped in the drill chuck, the lower end of the drill bit is a drill meat, and the middle part is provided with an annular structure for the tube positive wheel to clamp. The annular structure can be provided with a buckle to cooperate with the bayonet in the tube positive wheel to ensure that the tube positive wheel can always rotate with the drill bit as the rotation center. The tube positive wheel can also be buckled on the drill bit in the form of a clamp. In order to correct the drill bit, a plurality of deviation correction wheels distributed in a circular array with the drill bit as the rotation center are provided on the outer end edge of the tube positive wheel, and the deviation correction groove cooperating with the deviation correction wheel is provided on the tube positive seat. Since the tube positive wheel is only sleeved on the drill bit for deviation correction before the drilling machine is operated, the tube positive wheel will be removed when drilling is actually performed. Therefore, the tube positive seat only needs to be used in conjunction with the deviation correction wheel on the tube positive wheel when correcting the deviation, so a pushing structure is provided. The pipe seat is connected to the pushing seat on the pushing member, and the pushing seat can be pushed as needed to make the pipe seat closer to / away from the drill bit. In order to facilitate the movement of the pushing seat, a screw rod is engaged with a screw hole on a support seat fixedly connected to the fixed seat. One end of the screw rod is connected to the pushing seat through a bearing, and the other end of the screw rod is connected to a rotating wheel. When the rotating wheel is rotated, the screw rod will push the pushing seat in the direction of the pushing seat to push and move the pushing seat at the end of the screw rod. The bearing is set to allow the screw rod to rotate in the pushing seat, while keeping the pushing seat only moving forward while it itself remains parallel to the fixed seat. In order to avoid the pushing seat from rotating, a limit column is set at the bottom of the pushing seat. The limit column cooperates with the limit groove on the fixed seat, which can ensure that the pushing seat can only move forward and backward and keep the pushing seat itself relatively fixed, thereby ensuring that the pipe seat on the pushing seat can move forward and backward smoothly.

[0009] When the drill bit is corrected, the push seat pushes the tube straightening seat toward the drill bit, causing the correcting groove to contact the correcting wheel. The correcting groove applies pressure to the correcting wheel, forcing the drill bit to rotate completely around the rotation center defined by the correcting groove to complete the correction. That is, the rotation center of the correcting groove must coincide with the axis of the drill chuck to achieve the coaxiality of the drill bit and the drill chuck. Then the pushing depth of the push seat cannot be too much, otherwise the drill bit will be pushed excessively and cause damage to the drill chuck. However, if the pushing depth is not enough, it cannot play the role of correcting the drill bit. Therefore, a distance sensor pointing to the drill bit is set on the tube straightening seat. If the drill bit and the drill chuck are not coaxial, the distance sensor will detect that the runout on the side wall of the drill bit has been fluctuating. At this time, the correcting groove is pushed toward the correcting wheel by rotating the rotating wheel until the runout detection is stable, indicating that the drill bit has completed the correction.

[0010] Furthermore, it also includes a plate mounting assembly, which includes a fixing groove, a fixing plate, a push plate, a push rod and a handle, the fixing groove is arranged on the fixing seat, the fixing plate is detachably connected to the fixing groove, the fixing plate is provided with a receiving groove and a U-shaped notch, the receiving groove is arranged on the upper end surface of the fixing plate, the U-shaped notch is arranged on the edge of the fixing plate, the drill bit can pass through the U-shaped notch, the push plate fits in the U-shaped notch, the push rod passes through the through hole on the fixing seat, one end of the push rod is connected to the push plate, and the other end of the push rod is connected to the handle, the receiving groove is provided with a clamping groove, and the push plate points to the clamping groove.

[0011] Compared with the prior art, the advantages of the utility model are: the push seat is moved toward the drill bit by rotating the rotating wheel, and the correction wheel is driven to abut against the correction groove while the drill bit rotates, so that the coaxiality of the drill bit is consistent with the drill chuck. In order to avoid excessive correction or insufficient correction, a distance sensor is set to point to the drill bit to detect the runout of the outer side of the drill bit. The rotary wheel is gradually rotated to push the push seat to correct the drill bit until the runout is stable, indicating that the drill bit has completed the correction. The drill bit that has completed the correction can avoid the phenomenon of deviation of the hole or the groove when drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a three-dimensional diagram of the utility model;

[0014] Figure 2 For the utility model Figure 1 A partial enlarged view of point A.

[0015] Wherein: 1. drilling machine; 11. machine body; 12. drill chuck; 13. drill bit; 14. workbench; 2. deviation correction component; 21. fixing seat; 211. through hole; 22. pipe straightening seat; 221. deviation correction groove; 222. distance sensor; 23. pipe straightening wheel; 231. deviation correction wheel; 24. pushing member; 241. supporting seat; 242. pushing seat; 243. screw rod; 244. rotating wheel; 245. bearing; 246. limiting column; 247. limiting groove; 248. screw hole; 3. mounting plate component; 31. fixing groove; 32. fixing plate; 321. mounting groove; 322. U-shaped notch; 323. snap-in groove; 33. push plate; 34. push rod; 35. handle. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0017] The specific implementation of the utility model will be described below in conjunction with the accompanying drawings:

[0018] like Figure 1-2 As shown, a short hole and short slot positioning and correction drilling device includes a drilling machine 1 and a correction component 2, wherein the drilling machine 1 includes a body 11, a drill chuck 12, a drill bit 13 and a workbench 14, wherein the drill chuck 12 is rotatably connected to the body 11, and the workbench 14 is liftably connected to the body 11, the drill chuck 12 points to the workbench 14, and the drill bit 13 is detachably connected to the drill chuck 12; the correction component 2 includes a fixed seat 21, a pipe straight seat 22, a pipe straight wheel 23 and a pushing member 24, wherein the fixed seat 21 is detachably connected to the workbench 14, and the pushing member 24 includes a supporting seat 241, a pushing seat 242, a screw rod 243, a rotating wheel 244, a limiting column 246 and a limiting groove 247, wherein the supporting seat 241 is fixedly connected to the fixed seat 21, and the lower end of the pushing seat 242 is provided with A limiting column 246, a limiting groove 247 is provided on the fixed seat 21, and the pushing seat 242 can be movably connected to the fixed seat 21 through the cooperation of the limiting column 246 and the limiting groove 247, the screw rod 243 is engaged with the screw hole 248 on the support seat 241, one end of the screw rod 243 is connected to the pushing seat 242 through a bearing 245, and the other end of the screw rod is fixedly connected to the rotating wheel 244, the pipe straightening seat 22 is connected to the pushing seat 242, and the pipe straightening wheel 23 is detachably connected to the drill bit 13, and the pipe straightening wheel 23 is provided with a plurality of correcting wheels 231 distributed in a circular array with the drill bit 13 as the rotation center, the pipe straightening seat 22 is provided with a correcting groove 221 that cooperates with the outer wall of the pipe straightening wheel 23, and the pipe straightening seat 22 is provided with a distance sensor 222 pointing to the drill bit 13.

[0019] Furthermore, it also includes a plate mounting assembly 3, which includes a fixing groove 31, a fixing plate 32, a push plate 33, a push rod 34 and a handle 35. The fixing groove 31 is arranged on the fixing seat 21, and the fixing plate 32 is detachably connected to the fixing groove 31. The fixing plate 32 is provided with a receiving groove 321 and a U-shaped notch 322. The receiving groove 321 is arranged on the upper end surface of the fixing plate 32, and the U-shaped notch 322 is arranged on the edge of the fixing plate 32. The drill bit 13 can pass through the U-shaped notch 322, and the push plate 33 is matched in the U-shaped notch 322. The push rod 34 passes through the through hole 211 on the fixing seat 21, one end of the push rod 34 is connected to the push plate 33, and the other end of the push rod 34 is connected to the handle 35. The receiving groove 321 is provided with a clamping groove 323, and the push plate 33 points to the clamping groove 323.

[0020] Description of the working method of this utility model:

[0021] The short hole and short slot positioning and deviation correction drilling device adopts this structure. The drilling machine 1 is the most basic operating structure. The drill bit 13 is a small drill bit that can drill PCB boards. The upper end of the drill bit 13 is clamped in the drill chuck 12. The lower end of the drill bit 13 is a drill. The middle part has an annular structure for the pipe positive wheel 23 to clamp. A buckle can be provided on the annular structure to cooperate with the bayonet in the pipe positive wheel 23 to ensure that the pipe positive wheel 23 can always rotate with the drill bit 13 as the rotation center. The pipe positive wheel 23 can also be buckled on the drill bit 13 in the form of a clamp. In order to realize the correction of the drill bit 13, the pipe positive wheel 23 is clamped in the pipe positive wheel 23. The outer edge of the wheel 23 is provided with a plurality of correcting wheels 231 which are arranged in a circumferential array with the drill bit 13 as the rotation center, and the correcting groove 221 which cooperates with the correcting wheel 231 is provided on the pipe straightening seat 22. Since the pipe straightening wheel 23 is only sleeved on the drill bit 13 for correcting the deviation before the drilling machine 1 is operated, the pipe straightening wheel 23 will be removed during the actual drilling. Therefore, the pipe straightening seat 22 also needs to be used in conjunction with the correcting wheel 231 on the pipe straightening wheel 23 only during the correction of the deviation. Therefore, a pushing member 24 is provided to connect the pipe straightening seat 22 to the pushing seat 22 on the pushing member 24. 42, the push seat 242 can be pushed as needed to make the pipe seat 22 close to / away from the drill bit 13. In order to facilitate the movement of the push seat 242, a screw rod 243 is provided to engage with a screw hole 248 on a support seat 241 fixedly connected to the fixed seat 21. One end of the screw rod 243 is connected to the push seat 242 through a bearing 245, and the other end of the screw rod 243 is connected to the rotating wheel 244. When the rotating wheel 244 is rotated, the screw rod 243 will be pushed in the direction of the push seat 242, pushing the push seat 242 at the end of the screw rod 243 to move The bearing 245 is arranged to allow the screw rod 243 to rotate in the pushing seat 242, while keeping the pushing seat 242 only moving forward while it itself remains parallel to the fixed seat 21. In order to prevent the pushing seat 242 from rotating, a limiting column 246 is arranged at the bottom of the pushing seat 242. The limiting column 246 cooperates with the limiting groove 247 on the fixed seat 21 to ensure that the pushing seat 242 can only move forward and backward and keep the pushing seat 242 itself relatively fixed, thereby ensuring that the pipe seat 22 on the pushing seat 242 can move forward and backward smoothly.

[0022] When the drill bit 13 is corrected, the push seat 242 pushes the pipe seat 22 to move in the direction of the drill bit 13, so that the correction groove 221 contacts the correction wheel 231, and the correction groove 221 applies pressure to the correction wheel 231, forcing the drill bit 13 to completely rotate around the rotation center defined by the correction groove 221 to complete the correction. That is, the rotation center of the correction groove 221 must coincide with the axis of the drill chuck 12 to achieve the coaxiality of the drill bit 13 and the drill chuck 12. Therefore, the pushing depth of the push seat 242 cannot be too deep. Over-pushing will cause the drill bit 13 to be pushed excessively and cause damage to the drill chuck 12. However, if the pushing depth is not enough, the drill bit 13 cannot be corrected. Therefore, a distance sensor 222 pointing to the drill bit 13 is set on the pipe seat 22. If the drill bit 13 and the drill chuck 12 are not coaxial, the distance sensor 222 will detect that the runout on the side wall of the drill bit 13 is constantly fluctuating. At this time, by rotating the rotating wheel 244, the correction groove 221 is pushed onto the correction wheel 231 until the runout detection is stable, indicating that the drill bit 13 has completed the correction.

[0023] Because the PCB board itself is relatively thin and the drill bit 13 is also very small, the PCB board cannot be clamped by the traditional clamping method to avoid damage to the PCB board during the clamping process. Therefore, a fixing groove 31 is provided on the fixing seat 21, and a fixing plate 32 is matched in the fixing groove 31. The receiving groove 321 on the fixing plate 32 has different sizes and can be replaced according to the size of the PCB board. In order to clamp the PCB board, a clamping groove 323 is provided on the receiving groove 321 to clamp the PCB board. The bottom of the PCB board is pressed by pushing the push plate 33. Because the PCB board is relatively fragile, the PCB board can be gently pushed and clamped in an artificial manner. Therefore, the push plate 33 is connected to the handle 35 through the push rod 34, and the handle 35 is manually pushed to push and fix the PCB board. Since the drill bit 13 will poke out downward during the drilling process, the U-shaped notch 322 is provided for the drill bit 13 to pass through to avoid the drill bit 13 drilling into the fixing plate 32 and causing damage.

[0024] The beneficial effect of the utility model is that the push seat 242 is moved toward the direction of the drill bit 13 by rotating the rotating wheel 244, and the correction wheel 231 is driven to abut against the correction groove 221 while the drill bit 13 rotates, so that the coaxiality of the drill bit 13 is consistent with the drill chuck 12. In order to avoid excessive correction or insufficient correction, a distance sensor 222 is set to point to the drill bit 13 to detect the runout of the outer side of the drill bit 13. The rotating wheel 244 is gradually rotated to push the push seat 242 to correct the drill bit 13 until the runout is stable, which means that the drill bit 13 has completed the correction. The drill bit 13 that has completed the correction can avoid the situation of deviation of the hole or the groove during drilling, and then the board assembly 3 is used to manually fix the PCB board to avoid damage caused by mechanical fixation.

[0025] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A short hole and short slot positioning and deviation correction drilling device, comprising a drilling machine, the drilling machine comprising a machine body, a drill chuck, a drill bit and a workbench, the drill chuck is rotatably connected to the machine body, the workbench is liftably connected to the machine body, the drill chuck points to the workbench, the drill bit is detachably connected to the drill chuck, and is characterized in that: It also includes a correction component, which includes a fixed seat, a pipe straightening seat and a pipe straightening wheel. The fixed seat is detachably connected to the workbench, the pipe straightening seat is connected to the fixed seat, the pipe straightening wheel is detachably connected to the drill bit, the pipe straightening wheel is provided with a plurality of correction wheels distributed in a circular array with the drill bit as the rotation center, and the pipe straightening seat is provided with a correction groove that cooperates with the outer side wall of the pipe straightening wheel.

2. The short hole and short slot positioning and deviation correction drilling device according to claim 1 is characterized in that: The correction assembly also includes a pushing component, which includes a supporting seat, a pushing seat, a screw and a rotating wheel. The supporting seat is fixedly connected to the fixed seat, and the pushing seat is movably connected to the fixed seat. The screw is engaged with a screw hole on the supporting seat, one end of the screw is connected to the pushing seat through a bearing, and the other end of the screw is fixedly connected to the rotating wheel, and the tube straightening seat is connected to the pushing seat.

3. The short hole and short slot positioning and deviation correction drilling device according to claim 2 is characterized in that: The pushing component further comprises a limiting column and a limiting groove, wherein the limiting column is arranged at the lower end of the pushing seat, the limiting groove is arranged on the fixing seat, and the limiting column matches the limiting groove.

4. The short hole and short slot positioning and deviation correction drilling device according to claim 2 is characterized in that: The pipe seat is also provided with a distance sensor, and the distance sensor points to the drill bit.

5. The short hole and short slot positioning and deviation correction drilling device according to claim 1 is characterized in that: It also includes a plate mounting assembly, which includes a fixing groove and a fixing plate, wherein the fixing groove is arranged on a fixing seat, and the fixing plate is detachably connected in the fixing groove, and the fixing plate is provided with a receiving groove and a U-shaped notch, wherein the receiving groove is arranged on the upper end surface of the fixing plate, and the U-shaped notch is arranged on the edge of the fixing plate, and the drill bit can pass through the U-shaped notch.

6. The short hole and short slot positioning and deviation correction drilling device according to claim 5, characterized in that: The plate mounting assembly also includes a push plate, a push rod and a handle. The push plate fits in the U-shaped notch, the push rod passes through a through hole on the fixing seat, one end of the push rod is connected to the push plate, and the other end of the push rod is connected to the handle.

7. The short hole and short slot positioning and deviation correction drilling device according to claim 6 is characterized in that: The receiving slot is provided with a clamping slot, and the push plate points to the clamping slot.

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