A drilling depth positioning device for mechanical processing

Abstract

The present application discloses a drilling depth positioning device for mechanical processing, which relates to the technical field of drilling equipment auxiliary processing devices, and includes a positioning frame installed on the drilling equipment, and a positioning sleeve rotatably sleeved on the drill rod, a guide rod is fixedly arranged on the positioning frame, a travel block and a positioning block are slidably arranged on the guide rod, and the travel block is fixedly connected to the positioning sleeve; a trigger device for detecting the contact between the drill bit and the tool surface is arranged on the positioning sleeve, and the trigger device is electrically connected to the control system, and a driving component for driving the positioning block to slide is arranged on the positioning frame, and the control system is electrically connected to the driving component; a contact switch is arranged on the positioning block, and the contact switch is electrically connected to the control system, and the control system is electrically connected to the drilling equipment, and is used to control the start and stop of the drilling equipment. The present application can realize the precise positioning of the drilling depth, thereby ensuring the drilling accuracy, and effectively improving the drilling processing efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of drilling equipment auxiliary processing devices, and in particular to a drilling depth positioning device for mechanical processing. Background Art

[0002] Drilling is one of the most common operations in mechanical processing and is widely used in the manufacturing and maintenance of various mechanical equipment. With the continuous development of the manufacturing industry, the requirements for drilling accuracy and efficiency are becoming higher and higher. Drilling equipment usually uses a motor to drive the drill rod and drill bit to rotate, and then uses a liftable work platform to drill the surface of the workpiece. However, traditional drilling equipment has many shortcomings in practical applications, especially in the control of drilling depth. The lack of an effective positioning device makes it difficult to ensure drilling accuracy, affecting the overall processing quality and production efficiency.

[0003] At present, existing drilling equipment usually adopts the following methods to achieve drilling depth control: one is to rely on workers' experience and manual measurement; the other is to use mechanical limit devices, such as setting scale lines or blocks on the drill rod. Although the above methods have solved the problem of drilling depth control to varying degrees, there are still some obvious defects. For example, the method relying on workers' experience and manual measurement is not only inefficient, but also easily affected by human factors, resulting in inconsistent drilling depth; although the mechanical limit device can improve accuracy, it has poor flexibility. Summary of the invention

[0004] In view of the problems existing in the prior art, the present application provides a drilling depth positioning device for mechanical processing.

[0005] The present application provides a drilling depth positioning device for mechanical processing, which adopts the following technical solution:

[0006] A drilling depth positioning device for mechanical processing comprises a positioning frame installed on a drilling device, and a positioning sleeve rotatably sleeved on a drill rod, wherein a guide rod is fixedly arranged on the positioning frame, and the length direction of the guide rod is parallel to the drilling direction of the drill rod, and a travel block and a positioning block are slidably arranged on the guide rod, and the travel block is fixedly connected to the positioning sleeve; a trigger device for detecting contact between a drill bit and a tool surface is arranged on the positioning sleeve, and the trigger device is electrically connected to a control system; a driving component for driving the positioning block to slide is arranged on the positioning frame, and the control system is electrically connected to the driving component; a contact switch is arranged on the positioning block, and the contact switch is electrically connected to the control system, and the control system is electrically connected to the drilling device, and is used to control the start and stop of the drilling device.

[0007] Optionally, the positioning sleeve includes an inner cylinder and an outer cylinder, the inner cylinder is coaxially fixedly connected to the drill rod, and the inner cylinder is provided with a fixing structure for fixing the inner cylinder to the drill rod, the outer cylinder is rotatably sleeved on the inner cylinder, and the travel block is fixedly connected to the outer cylinder.

[0008] Optionally, the fixing structure includes a clamping block, a connecting bearing and a fixing piece, the side wall of the inner cylinder is provided with a plurality of mounting openings, each of the mounting openings is distributed along the circumference of the inner cylinder, the clamping block is slidably arranged in each of the mounting openings, the connecting bearing is used to be sleeved on the inner cylinder, the fixing piece is used to fix the inner ring of the connecting bearing on the inner cylinder, the inner ring of the connecting bearing is provided with a driving part for driving each of the clamping blocks to approach each other and press against the side wall of the drill pipe, the outer cylinder is sleeved on the connecting bearing and fixedly connected to the outer ring of the connecting bearing.

[0009] Optionally, the driving part includes a top block, and there are multiple top blocks, which are all fixedly arranged in the inner ring of the connecting bearing. The top blocks correspond one-to-one with the clamping blocks on the inner cylinder, and the side walls of the inner cylinder are provided with grooves for each of the top blocks to slide into, and the grooves correspond one-to-one with the mounting ports, and the grooves are connected to the corresponding mounting ports. The top of each top block is provided with a guide slope, and the ends of each clamping block away from each other are provided with a guide sliding surface, and the guide slope is used to abut the guide sliding surface on the corresponding clamping block and guide the clamping block to press against the side wall of the drill pipe.

[0010] Optionally, an anti-slip pad is provided at one end of each clamping block that is close to each other.

[0011] Optionally, the trigger device includes a positioning rod, a limit block, an elastic member and a pressure sensor, a rod barrel is fixedly arranged on the outer cylinder body, the positioning rod is slidably inserted into the rod barrel, the limit block is arranged on the positioning rod and is located above the outer cylinder body, the elastic member is used to drive the limit block to slide toward the outer cylinder body, the pressure sensor is installed at the bottom of the positioning rod and is used to abut the workpiece, and the pressure sensor is electrically connected to the control system.

[0012] Optionally, the limit block is slidably disposed on the positioning rod along the length direction of the positioning rod, and the positioning rod is provided with a limit piece for preventing the limit block from sliding.

[0013] Optionally, the limiting member includes a limiting screw sleeve, the side wall of the positioning rod is provided with an external thread matched with the limiting screw sleeve, the limiting screw sleeve is sleeved on the positioning rod and cooperates with the positioning rod thread, and the limiting block is fixedly arranged on the limiting screw sleeve.

[0014] Optionally, the drive assembly includes a transmission screw and a servo motor, the transmission screw is rotatably set on a positioning frame, and the axial direction of the transmission screw is parallel to the length direction of the guide rod, the transmission screw is threadedly matched with the positioning block, the servo motor is used to drive the transmission screw to rotate, and the servo motor is electrically connected to the control system.

[0015] Optionally, a stroke encoder is also provided on the positioning frame, the control system is electrically connected to the stroke encoder, and the stroke encoder is respectively connected to the stroke block and the positioning block for accurately locating the positions of the stroke block and the positioning block.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The present application installs a positioning frame on the drilling equipment. During the drilling process, when the drill rod moves downward, it drives the travel block to move on the guide rod. When the trigger device detects that the drill bit is in contact with the surface of the workpiece, it sends a signal to the control system. At this time, the control system records the current position of the travel block as the initial position. Thereafter, the control system controls the drive component to work, drives the positioning block to move on the guide rod, adjusts the distance between the positioning block and the initial position of the travel block, and the distance between the positioning block and the initial position of the travel block is the drilling depth. When the drilling depth reaches the depth required for processing, the travel block contacts the contact switch on the positioning block, and the contact switch sends a signal to the control system. The control system controls the drilling equipment to stop the drill bit from drilling, thereby achieving precise positioning of the drilling depth, ensuring drilling accuracy, and effectively improving processing efficiency.

[0018] 2. The trigger device can accurately detect the contact point between the drill bit and the workpiece surface. Specifically, when the drill bit gradually approaches the workpiece surface, the positioning rod is subjected to the pressure of the workpiece, compressing the elastic part and pushing the limit block to slide toward the rod barrel. At this time, the pressure sensor installed at the bottom of the positioning rod will detect this change and transmit the signal to the control system. After receiving the signal, the control system records the current position of the travel block as the initial position to ensure that the starting point of the drilling depth is accurate.

[0019] 3. The present application sets the limit block on the positioning rod for sliding movement, so that the position of the limit rod can be freely adjusted, thereby adjusting the initial position of the positioning rod, so as to adapt to different types of drill bits and ensure that the pressure sensor just contacts the workpiece while the drill bit abuts against the surface of the workpiece.

[0020] 4. This application can monitor and feedback the position of the travel block and the positioning block in real time by setting a travel encoder on the positioning frame, ensuring that the distance between the two can be accurately controlled. This helps to accurately set and adjust the drilling depth during the drilling process, further improving the drilling accuracy and processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0022] Figure 2 It is a schematic diagram of the structure of the positioning frame used in the embodiment of the present application;

[0023] Figure 3 is a schematic diagram of the structure of a positioning sleeve used in an embodiment of the present application;

[0024] Figure 4 This is a cross-sectional view of the structure of the positioning sleeve used to express the embodiment of the present application;

[0025] Figure 5 is a schematic diagram of the structure of the trigger device used in the embodiment of the present application;

[0026] Figure 6 It is a structural cross-sectional view used to express the trigger device in an embodiment of the present application.

[0027] Explanation of the accompanying drawings: 1. Positioning frame; 11. Guide rod; 12. Travel block; 121. Connecting frame; 13. Positioning block; 131. Contact switch; 14. Transmission screw; 15. Servo motor; 16. Travel encoder; 2. Positioning sleeve; 21. Inner cylinder; 211. Mounting port; 212. Through hole; 213. Slot; 22. Outer cylinder; 221. Ring; 23. Clamping block; 231. Guide sliding surface; 24. Connecting bearing; 241. Threaded hole; 242. Top block; 243. Guide ramp; 25. Locking bolt; 3. Trigger device; 31. Positioning rod; 311. Sliding block; 312. Limiting screw sleeve; 32. Limiting block; 33. Elastic member; 34. Pressure sensor; 35. Rod barrel; 4. Control system. DETAILED DESCRIPTION

[0028] The following will be combined with the attached Figure 1 -Attached Figure 6 , the technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0029] The inventor of this application has found that traditional drilling equipment has many deficiencies in practical applications, especially in terms of the control of drilling depth. The lack of an effective positioning device makes it difficult to ensure drilling accuracy, affecting the overall processing quality and production efficiency. To this end, this application discloses a drilling depth positioning device for mechanical processing, which mainly adopts the following scheme:

[0030] The present application embodiment discloses a drilling depth positioning device for mechanical processing. Figure 1 and Figure 2 , including a positioning frame 1 installed on the drilling equipment, and a positioning sleeve 2 rotatably sleeved on the drill rod, a guide rod 11 is fixedly arranged on the positioning frame 1, the length direction of the guide rod 11 is vertical and parallel to the drilling direction of the drill rod, a travel block 12 and a positioning block 13 are slidably arranged on the guide rod 11, and the travel block 12 is fixedly connected to the positioning sleeve 2. A trigger device 3 for detecting the contact between the drill bit and the tool surface is arranged on the positioning sleeve 2, and the trigger device 3 is electrically connected to the control system 4. A driving component for driving the positioning block 13 to slide is arranged on the positioning frame 1, and the control system 4 is electrically connected to the driving component. A contact switch 131 is arranged on the positioning block 13, and the contact switch 131 is electrically connected to the control system 4, and the control system 4 is electrically connected to the drilling equipment, and is used to control the start and stop of the drilling equipment.

[0031] Reference Figure 1 The drilling depth positioning device of the present application is installed on the drilling equipment by a later installation method. The positioning device can be produced and sold separately to improve the market application prospects. Specifically, the positioning frame 1 is fixed to the drilling equipment by bolts or welding.

[0032] Reference Figure 2 The driving assembly includes a transmission screw 14 and a servo motor 15. The transmission screw 14 is rotatably arranged on the positioning frame 1, and the axial direction of the transmission screw 14 is parallel to the length direction of the guide rod 11. The transmission screw 14 is threadedly matched with the positioning block 13. The servo motor 15 is used to drive the transmission screw 14 to rotate, and the servo motor 15 is electrically connected to the control system 4.

[0033] Reference Figure 2 The positioning frame 1 is also provided with a stroke encoder 16, the control system 4 is electrically connected to the stroke encoder 16, and the stroke encoder 16 is respectively connected to the stroke block 12 and the positioning block 13, for accurately positioning the positions of the stroke block 12 and the positioning block 13. In this way, the positions of the stroke block 12 and the positioning block 13 can be monitored and fed back in real time through the stroke encoder 16, ensuring that the distance between the two can be accurately controlled.

[0034] Reference Figure 2 and Figure 3 The positioning sleeve 2 includes an inner cylinder 21 and an outer cylinder 22. The inner cylinder 21 is sleeved on the drill rod and is coaxially fixedly connected to the drill rod. The outer cylinder 22 is sleeved on the inner cylinder 21 and is coaxially rotatably connected to the inner cylinder 21. A connecting frame 121 is fixedly provided on the travel block 12 by bolts, and the connecting frame 121 is fixedly connected to the outer cylinder 22 by bolts.

[0035] Reference Figure 3 and Figure 4In order to facilitate the installation of the positioning sleeve 2 on the drill pipe and facilitate the maintenance and upgrading of subsequent equipment, a fixing structure for fixing the inner cylinder 21 on the drill pipe is provided on the inner cylinder 21. The fixing structure includes a clamping block 23, a connecting bearing 24 and a fixing member. The side wall of the inner cylinder 21 is provided with a plurality of mounting openings 211, each of which is distributed along the circumference of the inner cylinder 21. A clamping block 23 is slidably provided in each mounting opening 211, a guide block is fixedly provided on the side wall of the clamping block 23, and a guide groove for the guide block to slide is provided on the side wall of the mounting opening 211.

[0036] Reference Figure 3 and Figure 4 The connecting bearing 24 is used to be sleeved on the inner cylinder 21, the outer cylinder 22 is sleeved on the connecting bearing 24, and the outer cylinder 22 is fixedly connected with the outer ring of the connecting bearing 24 by bolts, and the fixing member is used to fix the inner ring of the connecting bearing 24 on the inner cylinder 21. Specifically, the fixing member includes a locking bolt 25, and the top of the inner cylinder 21 is provided with a plurality of through holes 212 for each locking bolt 25 to pass through, and the top of the inner ring of the connecting bearing 24 is provided with a plurality of threaded holes 241, and the through holes 212 correspond to the threaded holes 241 one by one, and the locking bolts 25 are adapted to the threaded holes 241; the inner ring of the connecting bearing 24 is sleeved on the inner cylinder 21, and the locking bolts 25 pass through the through holes 212 at the top of the inner cylinder 21, and cooperate with the inner ring thread of the connecting bearing 24, so that the inner ring of the connecting bearing 24 can be fixed on the inner cylinder 21.

[0037] Reference Figure 3 and Figure 4The inner ring of the connecting bearing 24 is provided with a driving part for driving each clamping block 23 to approach each other and press against the side wall of the drill pipe. The driving part includes a top block 242. A plurality of top blocks 242 are provided and fixedly arranged in the inner ring of the connecting bearing 24. The top blocks 242 correspond to the clamping blocks 23 on the inner cylinder 21 one by one. The side wall of the inner cylinder 21 is provided with a slot 213 for each top block 242 to slide into. The slot 213 corresponds to the installation port 211 one by one, and the slot 213 is connected to the corresponding installation port 211. The top of each top block 242 is provided with a guiding inclined surface 243, and the end of each clamping block 23 away from each other is provided with a guiding sliding surface 231. When the inner ring of the connecting bearing 24 is sleeved on the inner cylinder 21, each top block 242 is slid into the corresponding slot 213, so that the guiding inclined surface 243 on the top block 242 abuts against the guiding sliding surface 231 on the corresponding clamping block 23, and as the top block 242 slides, the guiding inclined surface 243 and the guiding sliding surface 231 cooperate with each other, so that the clamping block 23 abuts against the side wall of the drill pipe, thereby fixing the inner cylinder 21 on the side wall of the drill pipe. In addition, through the setting of the top block 242 and the slot 213, the relative position between the inner ring of the connecting bearing 24 and the inner cylinder 21 can be positioned, so that the locking bolt 25 can pass through the corresponding through hole 212 on the inner cylinder 21. In addition, each clamping block 23 is provided with an anti-skid pad at one end close to each other to increase the clamping force and prevent slipping.

[0038] Reference Figure 5 and Figure 6 The trigger device 3 includes a positioning rod 31, a stopper 32, an elastic member 33 and a pressure sensor 34. A rod barrel 35 is fixedly provided at the top of the outer cylinder 22 by bolts. The length direction of the rod barrel 35 is parallel to the drilling direction of the drill pipe. A gap is provided between the bottom end of the rod barrel 35 and the top end of the outer cylinder 22. The positioning rod 31 is slidably provided in the rod barrel 35. A slider 311 is fixedly provided on the positioning rod 31. The slider 311 is slidably matched with the inner side wall of the rod body. A collar 221 is also provided on the side wall of the rod barrel 35. The positioning rod 31 is slidably provided in the collar 221. The stopper 32 is provided on the positioning rod 31 and is located between the rod barrel 35 and the collar 221. The elastic member 33 includes a compression spring, which is provided in the rod barrel 35 and is used to drive the stopper 32 to slide in the direction close to the outer cylinder 22. The pressure sensor 34 is installed at the bottom of the positioning rod 31 and is used to abut against the workpiece. The pressure sensor 34 is electrically connected to the control system 4. When the drill bit contacts the surface of the workpiece, the positioning rod 31 is subjected to the pressure of the workpiece, compressing the elastic member 33 and pushing the limit block 32 to slide toward the rod barrel 35. At this time, the pressure sensor 34 installed at the bottom of the positioning rod 31 will detect this change and transmit the signal to the control system 4. After receiving the signal, the control system 4 records the current position of the travel block 12 as the initial position to ensure that the starting point of the drilling depth is accurate.

[0039] Reference Figure 5In order to adapt to different types of drill bits and ensure that the pressure sensor 34 just contacts the workpiece when the drill bit abuts against the surface of the workpiece, the limit block 32 is slidably set on the positioning rod 31 along the length direction of the positioning rod 31, and a limit piece for preventing the limit block 32 from sliding is set on the positioning rod 31. Specifically, the limit piece includes a limit screw sleeve 312, and the side wall of the positioning rod 31 is provided with an external thread matched with the limit screw sleeve 312. The limit screw sleeve 312 is sleeved on the positioning rod 31 and threadedly matched with the positioning rod 31, and the limit block 32 is fixedly set on the limit screw sleeve 312. In this way, the position of the limit screw sleeve 312 can be adjusted to change the position of the limit block 32, thereby adjusting the initial position of the positioning rod 31.

[0040] The implementation principle of a drilling depth positioning device for mechanical processing in an embodiment of the present application is as follows: during the drilling process, when the drill rod is moving downward, it drives the travel block 12 to move on the guide rod 11, and the position of the travel block 12 is recorded and fed back in real time through the travel encoder 16. When the drill bit contacts the surface of the workpiece, the pressure sensor 34 installed at the bottom of the positioning rod 31 just contacts the workpiece. At this time, the pressure sensor 34 detects the change in pressure and sends a signal to the control system 4. At this time, the control system 4 records the current position of the travel block 12 as the initial position. Afterwards, the servo motor 15 is controlled by the control system 4 to drive the positioning block 13 to move on the guide rod 11, and the distance between the positioning block 13 and the initial position of the travel block 12 is adjusted. The distance between the positioning block 13 and the initial position of the travel block 12 is the drilling depth. When the drilling depth reaches the required processing depth, the travel block 12 contacts the contact switch 131 on the positioning block 13, and the contact switch 131 sends a signal to the control system 4, and the control system 4 controls the drilling equipment to stop the drill bit from continuing to drill, thereby achieving precise positioning of the drilling depth, ensuring the drilling accuracy, and effectively improving the processing efficiency.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A drilling depth positioning device for mechanical processing, characterized in that: The invention comprises a positioning frame (1) installed on the drilling equipment, and a positioning sleeve (2) rotatably sleeved on the drill rod, wherein a guide rod (11) is fixedly arranged on the positioning frame (1), and the length direction of the guide rod (11) is parallel to the drilling direction of the drill rod, and a travel block (12) and a positioning block (13) are slidably arranged on the guide rod (11), and the travel block (12) is fixedly connected to the positioning sleeve (2); The positioning sleeve (2) is provided with a trigger device (3) for detecting contact between the drill bit and the tool surface, the trigger device (3) is electrically connected to a control system (4), the positioning frame (1) is provided with a drive component for driving the positioning block (13) to slide, the control system (4) is electrically connected to the drive component; the positioning block (13) is provided with a contact switch (131), the contact switch (131) is electrically connected to the control system (4), the control system (4) is electrically connected to the drilling equipment, and is used to control the start and stop of the drilling equipment; The positioning sleeve (2) comprises an inner cylinder (21) and an outer cylinder (22); the inner cylinder (21) is coaxially fixedly connected to the drill rod, and a fixing structure for fixing the inner cylinder (21) to the drill rod is provided on the inner cylinder (21); the outer cylinder (22) is rotatably sleeved on the inner cylinder (21); and the travel block (12) is fixedly connected to the outer cylinder (22); The fixing structure comprises a clamping block (23), a connecting bearing (24) and a fixing member. The side wall of the inner cylinder (21) is provided with a plurality of mounting openings (211), each of the mounting openings (211) is distributed along the circumference of the inner cylinder (21), and each of the mounting openings (211) is slidably provided with the clamping block (23). The connecting bearing (24) is used to be sleeved on the inner cylinder (21), and the fixing member is used to fix the inner ring of the connecting bearing (24) on the inner cylinder (21). The inner ring of the connecting bearing (24) is provided with a driving part for driving each of the clamping blocks (23) to approach each other and press against the side wall of the drill pipe. The outer cylinder (22) is sleeved on the connecting bearing (24) and is fixedly connected to the outer ring of the connecting bearing (24). The driving part comprises a top block (242), wherein a plurality of top blocks (242) are provided and fixedly arranged in the inner ring of the connecting bearing (24), wherein the top blocks (242) correspond one-to-one to the clamping blocks (23) on the inner cylinder (21), and a side wall of the inner cylinder (21) is provided with a clamping groove (213) for each top block (242) to slide into, wherein the clamping groove (213) corresponds one-to-one to the mounting opening (211), and the clamping groove (213) is communicated with the corresponding mounting opening (211), and a guiding inclined surface (243) is provided at the top end of each top block (242), and a guiding sliding surface (231) is provided at one end of each clamping block (23) away from each other, wherein the guiding inclined surface (243) is used to abut against the guiding sliding surface (231) on the corresponding clamping block (23) and guide the clamping block (23) to abut against the side wall of the drill pipe.

2. The drilling depth positioning device for mechanical processing according to claim 1, characterized in that: An anti-slip pad is provided at one end of each clamping block (23) that is close to each other.

3. The drilling depth positioning device for mechanical processing according to claim 1, characterized in that: The trigger device (3) comprises a positioning rod (31), a limit block (32), an elastic member (33) and a pressure sensor (34); a rod tube (35) is fixedly arranged on the outer cylinder (22); the positioning rod (31) is slidably arranged in the rod tube (35); the limit block (32) is arranged on the positioning rod (31) and is located above the outer cylinder (22); the elastic member (33) is used to drive the limit block (32) to slide in a direction close to the outer cylinder (22); the pressure sensor (34) is installed at the bottom of the positioning rod (31) and is used to abut against a workpiece; the pressure sensor (34) is electrically connected to the control system (4).

4. The drilling depth positioning device for mechanical processing according to claim 3, characterized in that: The limiting block (32) is slidably arranged on the positioning rod (31) along the length direction of the positioning rod (31), and a limiting piece for preventing the limiting block (32) from sliding is arranged on the positioning rod (31).

5. The drilling depth positioning device for mechanical processing according to claim 4, characterized in that: The limiting member comprises a limiting screw sleeve (312); the side wall of the positioning rod (31) is provided with an external thread matched with the limiting screw sleeve (312); the limiting screw sleeve (312) is sleeved on the positioning rod (31) and threadably matched with the positioning rod (31); and the limiting block (32) is fixedly arranged on the limiting screw sleeve (312).

6. The drilling depth positioning device for mechanical processing according to claim 1, characterized in that: The driving assembly comprises a transmission screw (14) and a servo motor (15); the transmission screw (14) is rotatably arranged on the positioning frame (1), and the axial direction of the transmission screw (14) is parallel to the length direction of the guide rod (11); the transmission screw (14) is threadedly matched with the positioning block (13); the servo motor (15) is used to drive the transmission screw (14) to rotate, and the servo motor (15) is electrically connected to the control system (4).

7. The drilling depth positioning device for mechanical processing according to claim 6, characterized in that: The positioning frame (1) is also provided with a stroke encoder (16), the control system (4) is electrically connected to the stroke encoder (16), and the stroke encoder (16) is respectively connected to the stroke block (12) and the positioning block (13) for accurately locating the positions of the stroke block (12) and the positioning block (13).

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