Precise cutting device for pin shaft production and machining

Abstract

The precise cutting device comprises a machine body, a box body is installed on the rear side of the top of the machine body, and a mechanical arm used for transferring external raw materials is arranged on the front side of the top of the machine body. The first machining mechanism, the rotating mechanism, the second machining mechanism and the polishing mechanism are used in cooperation, small holes are formed in the two end faces of a raw material firstly, then the small holes in the two ends are clamped through abutting pieces, the whole raw material is clamped, and the raw material can be driven to rotate for cutting; a raw material with the two ends large in outer diameter and the middle small in outer diameter is formed, then two sets of symmetrical holes are formed in the raw material, the raw material is cut open along the middle to form two sets of pin shafts, protrusions on the end faces of the broken pin shafts are removed through the polishing mechanism, the end faces of the pin shafts become smooth, and therefore the two pin shafts can be produced at a time through the device; and the whole process is automatic, convenient and fast, and the production efficiency of the pin shaft is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pin processing, and more specifically, to a precision cutting device for pin production and processing. Background Art

[0002] A pin is a type of standardized fastener that can be used for both static fixed connections and relative movement with the connected parts. It is mainly used at the hinge joints of two parts to form a hinge connection. Pins are usually locked with split pins, which are reliable in operation and convenient for disassembly. During the production and processing of pins, fine machining is required. Since pins are rotary shaft-type parts, turning processing is usually used on a lathe.

[0003] When the existing pins are finely machined using a lathe, usually one end of the pin is clamped by a three-jaw chuck first, and then the other end of the pin is turned. After one end of the pin is processed, the pin needs to be removed from the three-jaw chuck, and then the processed end of the pin is clamped onto the three-jaw chuck, and then the unprocessed end of the pin is turned. This processing method requires the pin to be clamped and disassembled twice to complete the processing of one pin, resulting in too low production efficiency of the pin and being difficult to meet the needs of workers. Summary of the Invention

[0004] To solve the above technical problems, a precision cutting device for pin production and processing is provided, and this technical solution solves the problems raised in the above background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A precision cutting device for pin production and processing includes a machine body. A box body is installed at the rear side of the top of the machine body. A robotic arm for transferring external raw materials is arranged at the front side of the top of the machine body. A first processing mechanism and a polishing mechanism are installed at the rear side inside the box body. The polishing mechanism is located above the first processing mechanism. Rotating mechanisms are installed on both the left and right sides inside the box body. And a second processing mechanism is arranged at the front side inside the box body. The first processing mechanism is used for clamping the raw material and opening two groups of holes in the raw material. The rotating mechanisms, the second processing mechanism and the polishing mechanism cooperate to automatically produce two pins at a time. A baffle is rotatably connected to the top of the box body, and a motor for driving the baffle to rotate is arranged on the top wall of the box body.

[0007] Preferably, the first processing mechanism includes two fixed blocks welded to the rear side inside the box body. A first threaded rod is rotatably connected between the two fixed blocks. The thread directions of the two ends of the first threaded rod are opposite. Both ends of the outer surface of the first threaded rod are threadedly connected with a movable frame and a movable plate. The movable frame is slidably connected to the outer surface of the first fixed rod. The two ends of the first fixed rod are respectively welded to the inner walls of the two fixed blocks. A first servo motor for driving the first threaded rod to rotate is installed on the outer side wall of one of the fixed blocks.

[0008] Preferably, the first processing mechanism further includes a second threaded rod and a second fixed rod. A first lead screw is rotatably connected inside the movable frame. A lifting plate is threadedly connected to the outer surface of the first lead screw. The lifting plate is slidably connected to the first guide rod. The first guide rod is fixedly installed inside the movable frame. A first stepping motor is arranged on the top of the movable frame. The top of the first lead screw is fixedly connected to the output end of the first stepping motor. And a first electric push rod is installed on the front side of the lifting plate. The output end of the first electric push rod is fixedly installed with a connecting frame. The second threaded rod is rotatably connected inside the connecting frame. The second fixed rod is welded inside the connecting frame. Two clamping members are slidably installed on the second fixed rod. The two clamping members are respectively threadedly connected to the two ends of the second threaded rod. And the thread directions of the two ends of the second threaded rod are opposite. A second servo motor for driving the second threaded rod to rotate is installed on the top of the connecting frame.

[0009] Preferably, a second electric push rod is installed on the front side of the movable plate. The output end of the second electric push rod is fixedly connected with a mounting member. A first driving motor is installed inside the mounting member. The output end of the first driving motor is fixedly connected with a first drilling head.

[0010] Preferably, the rotating mechanism includes a second lead screw, a first movable block and a second movable block. The second lead screw is rotatably connected inside the box body. The first movable block and the second movable block are threadedly connected to the second lead screw. The first movable block and the second movable block are both slidably connected to the second guide rod. The second guide rod is fixedly connected inside the box body. The outer end of the second lead screw is fixedly installed at the output end of a second stepping motor. The second stepping motor is arranged on the outer side of the box body.

[0011] Preferably, a third electric push rod is rotatably connected to the outer side of the first movable block. The output end of the third electric push rod is fixedly installed with a second drilling head. A first driven gear is fixedly connected to the outer surface of the third electric push rod. A second driving motor is also installed on the outer side wall of the first movable block. The output end of the second driving motor is fixedly connected with a first driving gear that meshes with the first driven gear.

[0012] Preferably, the outer side of the second movable block is rotatably connected with a fourth electric push rod, the output end of the fourth electric push rod is fixedly connected to the frame, and a third threaded rod is rotatably connected inside the frame, the threads opened at both ends of the third threaded rod have opposite rotation directions, and both ends of the outer surface of the third threaded rod are threadedly connected with abutments, a third servo motor is installed on the top of the frame, the top of the third threaded rod is fixedly installed on the output end of the third servo motor, and a third fixed rod is also welded in the frame, two groups of the abutments are slidably connected to the third fixed rod, and a second driven tooth is fixedly connected to the outer surface of the fourth electric push rod, a third driving motor is also installed on the outer side wall of the second movable block, a second driving tooth is fixedly installed on the output end of the third driving motor, and the second driving tooth is meshed with the second driven tooth.

[0013] Preferably, the second processing mechanism includes a vertical frame welded to the front side of the interior of the box body, a third stepper motor is arranged at the bottom end of the interior of the vertical frame, the output end of the third stepper motor is fixedly connected to the third screw rod, a third guide rod is welded inside the vertical frame, a lifting member is slidably connected to the third guide rod, the lifting member is threadedly connected to the outer surface of the third screw rod, and the top of the lifting member is connected to a fixed frame.

[0014] Preferably, a fourth screw rod is rotatably connected in the fixed frame, a cutting knife is threadedly connected to the fourth screw rod, the cutting knife is slidably connected to a fourth guide rod, the fourth guide rod is welded in the fixed frame, a fourth stepper motor is arranged outside the fixed frame, and the outer end of the fourth screw rod is fixedly mounted on the output end of the fourth stepper motor.

[0015] Preferably, the polishing mechanism includes a fifth screw rod, a fifth guide rod and a movable plate, a transverse frame is welded to the inner top end of the box body, the fifth screw rod is rotatably connected to the inside of the transverse frame, the fifth guide rod is fixedly installed in the transverse frame, the movable plate is threadedly connected to the outer surface of the fifth screw rod, the movable plate and the fifth guide rod are slidably connected, and a fifth stepping motor for driving the fifth screw rod to rotate is arranged on the outer side wall of the transverse frame, the outer side of the movable plate is rotatably connected to the polishing plate and the driving wheel, a driven wheel is arranged on the polishing plate, the driving wheel is connected to the driven wheel through a belt, and a fourth driving motor is also installed on the other outer side of the movable plate, and the driving wheel is fixedly connected to the output end of the fourth driving motor.

[0016] Compared with the prior art, the present invention provides a precision cutting device for pin production and processing, which has the following beneficial effects:

[0017] 1. The present invention is provided with the combined use of a first processing mechanism, a rotating mechanism, a second processing mechanism, and a polishing mechanism. First, small holes are opened on both end faces of the raw material, and then abutting members are used to clamp the small holes at both ends, so as to clamp the whole raw material and drive the raw material to rotate for cutting, forming a raw material with "large outer diameters at both ends and small outer diameter in the middle". Then, two sets of symmetrical holes are opened on the raw material, and the raw material is cut along the middle to form two sets of pin shafts. The polishing mechanism is used to remove the protrusions on the end faces of the pin shafts after fracture, making the end faces of the pin shafts smooth. Therefore, two pin shafts are produced simultaneously by this device at one time, and the whole process is automated, which is convenient and fast, and improves the production efficiency of the pin shafts.

[0018] 2. By clamping the small holes at both ends of the raw material, the present invention enables the cutting of the whole outer wall of the raw material without dead corners, and the cutting process is formed at one time. Moreover, the small holes are also formed by high-precision processing, which also avoids the eccentricity of the raw material during rotation in the cutting process, improving the high precision of pin shaft production.

[0019] 3. All cutting and drilling steps in the present invention are carried out in a closed box, preventing the chips generated during processing from splashing, facilitating the staff to collect the chips, and further meeting the needs of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the internal structural schematic diagram of the box body in the present invention;

[0022] Figure 3 is the structural schematic diagram of the first processing mechanism in the present invention;

[0023] Figure 4 is the structural schematic diagram of the first processing mechanism from another perspective in the present invention;

[0024] Figure 5 is the structural schematic diagram of the rotating mechanism in the present invention;

[0025] Figure 6 is the internal structural schematic diagram of the frame in the present invention;

[0026] Figure 7 is the structural schematic diagram of the second processing mechanism in the present invention;

[0027] Figure 8 is the structural schematic diagram of the second processing mechanism from another perspective in the present invention;

[0028] Figure 9 is the structural schematic diagram of the polishing mechanism in the present invention;

[0029] Figure 10 Schematic diagram of the protrusion described in the embodiments of the present invention;

[0030] Figure 11 Schematic diagram of the pin shaft automatically produced by using this device in the present invention.

[0031] The reference numerals in the figure are:

[0032] 1. Body; 101. Robotic arm; 102. Box body; 103. Baffle; 104. Motor; 105. Raw material;

[0033] 2. First processing mechanism; 201. Fixed block; 202. First threaded rod; 203. First fixed rod; 204. First servo motor; 205. Movable frame; 206. First lead screw; 207. First guide rod; 208. First stepper motor; 209. Lifting plate; 210. First electric push rod; 211. Connecting frame; 212. Second threaded rod; 213. Second fixed rod; 214. Second servo motor; 215. Clamping member; 216. Movable plate; 217. Second electric push rod; 218. Mounting member; 219. First driving motor; 220. First drill bit;

[0034] 3. Rotating mechanism; 301. Second lead screw; 302. Second guide rod; 303. Second stepper motor; 304. First movable block; 305. Third electric push rod; 306. Second drill bit; 307. Second driving motor; 308. First driving gear; 309. First driven gear; 310. Second movable block; 311. Fourth electric push rod; 312. Frame; 313. Third threaded rod; 314. Third fixed rod; 315. Third servo motor; 316. Abutting member; 317. Third driving motor; 318. Second driving gear; 319. Second driven gear;

[0035] 4. Second processing mechanism; 401. Vertical frame; 402. Third stepper motor; 403. Third lead screw; 404. Third guide rod; 405. Lifting member; 406. Fixed frame; 407. Fourth lead screw; 408. Fourth guide rod; 409. Fourth stepper motor; 410. Cutting tool;

[0036] 5. Polishing mechanism; 501. Horizontal frame; 502. Fifth lead screw; 503. Fifth guide rod; 504. Fifth stepper motor; 505. Moving plate; 506. Polishing plate; 507. Fourth driving motor; 508. Driving wheel; 509. Driven wheel; 510. Belt;

[0037] A-1. Protrusion. Detailed implementation manners

[0038] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and other obvious variations can be conceived by those skilled in the art.

[0039] Embodiment 1: Please refer to Figures 1-11 As shown, a precision cutting device for pin production and processing includes a machine body 1. A box body 102 is installed at the rear side of the top of the machine body 1. A robotic arm 101 for transferring external raw materials 105 is arranged at the front side of the top of the machine body 1. A first processing mechanism 2 and a polishing mechanism 5 are installed at the rear side inside the box body 102. The polishing mechanism 5 is located above the first processing mechanism 2. Rotating mechanisms 3 are installed on both the left and right sides inside the box body 102. And a second processing mechanism 4 is arranged at the front side inside the box body 102. The first processing mechanism 2 is used for clamping the raw material 105 and opening two groups of holes in the raw material 105. The rotating mechanism 3, the second processing mechanism 4 and the polishing mechanism 5 cooperate to automatically produce two pins at a time. A baffle 103 is rotatably connected to the top of the box body 102, and a motor 104 for driving the baffle 103 to rotate is arranged on the top wall of the box body 102.

[0040] Embodiment 2: Please refer to Figure 3 As shown, the first processing mechanism 2 includes two groups of fixed blocks 201 welded to the rear side inside the box body 102. A first threaded rod 202 is rotatably connected between the two groups of fixed blocks 201. The thread directions of the two ends of the first threaded rod 202 are opposite. Two movable frames 205 and a movable plate 216 are threadedly connected to both ends of the outer surface of the first threaded rod 202. The movable frame 205 is slidably connected to the outer surface of the first fixed rod 203. The two ends of the first fixed rod 203 are respectively welded to the inner walls of the two groups of fixed blocks 201. A first servo motor 204 for driving the first threaded rod 202 to rotate is installed on the outer side wall of one of the fixed blocks 201.

[0041] Please refer to Figure 4As shown in the figure, the first processing mechanism 2 further includes a second threaded rod 212 and a second fixed rod 213. A first lead screw 206 is rotatably connected inside the movable frame 205. A lifting plate 209 is threadedly connected to the outer surface of the first lead screw 206. The lifting plate 209 is slidably connected to the first guide rod 207. The first guide rod 207 is fixedly installed inside the movable frame 205. A first stepping motor 208 is provided at the top of the movable frame 205. The top of the first lead screw 206 is fixedly connected to the output end of the first stepping motor 208. And a first electric push rod 210 is installed on the front side of the lifting plate 209. The output end of the first electric push rod 210 is fixedly installed with a connecting frame 211. The second threaded rod 212 is rotatably connected inside the connecting frame 211. The second fixed rod 213 is welded inside the connecting frame 211. Two sets of clamping members 215 are slidably installed on the second fixed rod 213. The two sets of clamping members 215 are respectively threadedly connected to both ends of the second threaded rod 212. And the thread directions opened at both ends of the second threaded rod 212 are opposite. A second servo motor 214 for driving the second threaded rod 212 to rotate is installed at the top of the connecting frame 211.

[0042] Please refer to Figure 3 As shown in the figure, a second electric push rod 217 is installed on the front side of the movable plate 216. The output end of the second electric push rod 217 is fixedly connected to a mounting member 218. A first driving motor 219 is installed inside the mounting member 218. The output end of the first driving motor 219 is fixedly connected to a first drilling head 220.

[0043] Those skilled in the art can understand that by driving the first threaded rod 202 to rotate through the output end of the first servo motor 204, the two movable frames 205 approach or move away from each other and the two movable plates 216 approach or move away from each other, thereby driving the two connecting frames 211 to approach or move away from each other and driving the two first drilling heads 220 to approach or move away from each other; and by driving the first lead screw 206 to rotate through the output end of the first stepping motor 208, the lifting plate 209 reciprocates up and down, and then drives the connecting frame 211 to reciprocate up and down; and by driving the second threaded rod 212 to rotate through the output end of the second servo motor 214, the two clamping members 215 approach or move away from each other.

[0044] Example 3: Please refer to Figure 5 As shown in the figure, the rotating mechanism 3 includes a second lead screw 301, a first movable block 304 and a second movable block 310. The second lead screw 301 is rotatably connected inside the box body 102. The first movable block 304 and the second movable block 310 are threadedly connected to the second lead screw 301. The first movable block 304 and the second movable block 310 are both slidably connected to the second guide rod 302. The second guide rod 302 is fixedly connected inside the box body 102. The outer end of the second lead screw 301 is fixedly installed at the output end of the second stepping motor 303. The second stepping motor 303 is arranged outside the box body 102.

[0045] Please refer to Figure 5 As shown, a third electric push rod 305 is rotatably connected to the outer side of the first movable block 304. The output end of the third electric push rod 305 is fixedly installed with a second drill bit 306. The outer surface of the third electric push rod 305 is fixedly connected with a first driven gear 309. A second driving motor 307 is also installed on the outer side wall of the first movable block 304. The output end of the second driving motor 307 is fixedly connected with a first driving gear 308 that meshes with the first driven gear 309.

[0046] Please refer to Figure 6 As shown, a fourth electric push rod 311 is rotatably connected to the outer side of the second movable block 310. The output end of the fourth electric push rod 311 is fixedly connected with a frame 312. A third threaded rod 313 is rotatably connected inside the frame 312. The thread directions of the two ends of the third threaded rod 313 are opposite. Both ends of the outer surface of the third threaded rod 313 are threadedly connected with abutting members 316. A third servo motor 315 is installed on the top of the frame 312. The top of the third threaded rod 313 is fixedly installed at the output end of the third servo motor 315. A third fixed rod 314 is also welded inside the frame 312. Both groups of abutting members 316 are slidably connected to the third fixed rod 314. The outer surface of the fourth electric push rod 311 is fixedly connected with a second driven gear 319. A third driving motor 317 is also installed on the outer side wall of the second movable block 310. The output end of the third driving motor 317 is fixedly installed with a second driving gear 318. The second driving gear 318 meshes with the second driven gear 319.

[0047] Those skilled in the art can understand that by driving the second lead screw 301 to rotate through the output end of the second stepping motor 303, the first movable block 304 and the second movable block 310 move back and forth, thereby driving the second drill bit 306 and the two groups of abutting members 316 to move back and forth; by driving the first driving gear 308 to rotate through the output end of the second driving motor 307, the first driven gear 309 and the third electric push rod 305 as a whole rotate, realizing the rotation of the second drill bit 306; and by driving the third threaded rod 313 to rotate through the output end of the third servo motor 315, the two groups of abutting members 316 approach or move away from each other. Also, by driving the second driving gear 318 to rotate through the output end of the third driving motor 317, the second driven gear 319 and the fourth electric push rod 311 as a whole rotate, driving the frame 312 to rotate, thereby realizing the rotation of the two groups of abutting members 316.

[0048] Example 4: Please refer to Figure 7As shown, the second processing mechanism 4 includes a vertical frame 401 welded to the front side of the box body 102, a third stepper motor 402 is arranged at the bottom end of the vertical frame 401, the output end of the third stepper motor 402 is fixedly connected to the third screw rod 403, a third guide rod 404 is welded inside the vertical frame 401, a lifting member 405 is slidably connected to the third guide rod 404, the lifting member 405 is threadedly connected to the outer surface of the third screw rod 403, and the top of the lifting member 405 is connected to a fixed frame 406.

[0049] Please refer to Figure 8 As shown, a fourth screw rod 407 is rotatably connected inside the fixed frame 406, a cutting knife 410 is threadedly connected to the fourth screw rod 407, the cutting knife 410 is slidably connected to the fourth guide rod 408, the fourth guide rod 408 is welded inside the fixed frame 406, a fourth stepper motor 409 is arranged outside the fixed frame 406, and the outer end of the fourth screw rod 407 is fixedly mounted on the output end of the fourth stepper motor 409.

[0050] Those skilled in the art can understand that, by driving the third screw rod 403 to rotate through the output end of the third stepper motor 402, the lifting member 405 slides back and forth up and down along the surface of the third guide rod 404, thereby driving the cutting knife 410 to reciprocate up and down; and by driving the fourth screw rod 407 to rotate through the output end of the fourth stepper motor 409, the cutting knife 410 can reciprocate left and right in the horizontal direction.

[0051] Example 5: Please refer to Figure 9 As shown, the polishing mechanism 5 includes a fifth screw rod 502, a fifth guide rod 503 and a movable plate 505. A transverse frame 501 is welded to the inner top end of the box body 102. The fifth screw rod 502 is rotatably connected to the inside of the transverse frame 501. The fifth guide rod 503 is fixedly installed in the transverse frame 501. The movable plate 505 is threadedly connected to the outer surface of the fifth screw rod 502. The movable plate 505 is slidably connected to the fifth guide rod 503. A fifth stepping motor 504 for driving the fifth screw rod 502 to rotate is arranged on the outer side wall of the transverse frame 501. The outer side of the movable plate 505 is rotatably connected to a polishing plate 506 and a driving wheel 508. A driven wheel 509 is arranged on the polishing plate 506. The driving wheel 508 is transmission-connected to the driven wheel 509 through a belt 510. A fourth driving motor 507 is also installed on the other outer side of the movable plate 505. The driving wheel 508 is fixedly connected to the output end of the fourth driving motor 507.

[0052] Those skilled in the art can understand that by driving the fifth lead screw 502 to rotate through the output end of the fifth stepping motor 504, the moving plate 505 reciprocates left and right in the horizontal direction, realizing the reciprocating movement of the polishing plate 506 left and right in the horizontal direction; and by driving the driving wheel 508 to rotate through the output end of the fourth driving motor 507, the driven wheel 509 rotates under the drive of the belt 510, thereby realizing the rotation of the polishing plate 506.

[0053] To clearly describe the working principle of the present invention, we take Figure 1 the orientation perspective for elaboration. The purpose of the present invention is to automatically produce two groups of pin shafts from a set of raw materials 105 at one time, and the schematic diagram of the produced pin shaft products is as Figure 11 shown, specifically as follows:

[0054] S1. Drive the baffle 103 to rotate through the output end of the motor 104, open the opening at the top of the box body 102, transfer the external raw material 105 to the middle position inside the box body 102 through the robotic arm 101. The raw material 105 is placed horizontally. Drive the first threaded rod 202 to rotate through the output end of the first servo motor 204, thereby driving the two connecting frames 211 to approach each other and move to both ends of the raw material 105.

[0055] S2. Drive the second threaded rod 212 to rotate through the output end of the second servo motor 214 at the top of the connecting frame 211, so that the two clamping members 215 connected to the same second threaded rod 212 approach each other, thereby realizing the clamping and fixing of both ends of the raw material 105. After that, the robotic arm 101 releases the clamping of the raw material 105, and drives the baffle 103 to rotate through the output end of the motor 104 to close the opening at the top of the box body 102.

[0056] S3. Synchronously drive the second lead screw 301 to rotate through the output ends of the second stepping motors 303 on both sides, so that the second drilling heads 306 on both sides respectively move to the center positions of both ends of the raw material 105. The second drilling heads 306 and the center of the end face of the raw material 105 are on the same horizontal line. Then drive the second drilling heads 306 to rotate through the output end of the second driving motor 307, and at the same time drive the extension of the output end of the third electric push rod 305, so that the second drilling heads 306 also approach the end face of the raw material 105, thereby synchronously opening small holes on both end faces of the raw material 105. Since both ends of the raw material 105 are clamped, the stability of drilling is improved, and there will be no deviation, realizing the high-precision opening of small holes at the center positions of both end faces of the raw material 105.

[0057] S4. Again, under the action of the output end of the second stepping motor 303, the two sets of abutting members 316 on both sides move to the positions of the small holes on both sides respectively, and the two sets of abutting members 316 on both sides are in a fitting state. Driven by the elongation of the output ends of the fourth electric push rods 311 on both sides, the two sets of abutting members 316 in the fitting state on both sides respectively extend into the small holes on both sides. Secondly, under the action of the rotation of the output ends of the third servo motors 315 on both sides, the two sets of abutting members 316 on both sides are in a state of moving away from each other, and respectively abut against the inner walls of the small holes on both sides, realizing the clamping and fixing of both ends of the raw material 105. At this time, the clamping member 215 releases the fixation of the raw material 105, and the output end of the first electric push rod 210 retracts and drives the clamping member 215 to move backward.

[0058] S5. Then, the output end of the third driving motor 317 on both sides drives the second driving gear 318 to rotate, realizing the rotation of the clamped and fixed raw material 105. The output end of the third stepping motor 402 drives the third lead screw 403 to rotate, so that the lifting member 405 moves upward, realizing the upward movement of the cutting tool 410 to contact the outer wall of the raw material 105. The output end of the fourth stepping motor 409 drives the fourth lead screw 407 to rotate, realizing the left and right movement of the cutting tool 410 in the horizontal direction, thereby realizing the cutting of the whole raw material 105 to form a raw material 105 with "large outer diameters at both ends and small outer diameter in the middle", and the cutting process is formed at one time. This method of clamping the small holes at both ends of the raw material 105 has no dead angle in the cutting of the whole outer wall of the raw material 105, and the small holes are formed by the above-mentioned high-precision opening, which also avoids the eccentricity of the raw material 105 during rotation in the cutting process, and improves the high precision of the pin production again.

[0059] S6. The cutting tool 410 resets. Again, the output end of the first servo motor 204 drives the first threaded rod 202 to rotate, so that the two connecting frames 211 approach each other and drive the two first drilling heads 220 to approach each other. The two first drilling heads 220 are respectively located at the positions of the raw material 105 to be drilled. Again, the output end of the second servo motor 214 on the top of the connecting frame 211 drives the second threaded rod 212 to rotate, so that the two clamping members 215 connected to the same second threaded rod 212 approach each other, thereby realizing the clamping and fixing of both ends of the raw material 105.

[0060] S7. Drive two groups of first drilling heads 220 to rotate through the output ends of two groups of first drive motors 219, and at the same time drive the output end of the second electric push rod 217 to extend to drive the first drilling head 220 to move forward, so as to symmetrically open two groups of holes on the whole raw material 105. Since the positions of the holes are relatively close to the positions clamped by the clamping members 215 during hole opening, the overall force of the raw material 105 is relatively symmetrical and uniform, improving the stability of drilling, preventing deviation, achieving high-precision drilling, and further improving the high precision of pin production;

[0061] S8. The clamping members 215 release the fixation of the raw material 105 again. Drive the second drive gear 318 to rotate through the output ends of the third drive motors 317 on both sides again, so as to drive the clamped and fixed raw material 105 to rotate. Drive the fourth lead screw 407 to rotate through the output end of the fourth stepping motor 409, so that the cutting tool 410 moves horizontally to the middle position directly below the raw material 105, and continuously drive the cutting tool 410 to move upward through the output end of the third stepping motor 402, so as to cut the raw material 105 along the middle. Since the raw material 105 is in a rotating state, it is very likely that the raw material 105 will break before the top of the cutting tool 410 reaches the height position of the center of the raw material 105, and a protrusion A-1 will appear on the end face after breaking, which is relatively uneven;

[0062] S9. Clamp and fix the two pins formed after breaking by the two groups of clamping members 215 on both sides. Release the fixation of the two pins by the two abutting members 316 on both sides, and drive the first lead screw 206 to rotate through the output ends of the first stepping motors 208 on both sides in turn, so that the connecting frame 211 moves upward, thereby driving the clamped pins to move upward to the height adapted to the polishing plate 506 in turn. Under the action of the output end of the fifth stepping motor 504, the polishing plate 506 contacts the protrusion A-1 on the end face of the pin. The polishing plate 506 rotates under the action of the output end of the fourth drive motor 507, so as to remove the protrusion A-1 on the end face of the pin, making the end face of the pin smooth. And this process is carried out step by step for the two pins, not synchronously. Therefore, two pins are produced simultaneously by this device at a time, and the whole process is automated, convenient and fast. In addition, all cutting and drilling steps are carried out in the closed box body 102, preventing the chips generated during processing from splashing, facilitating the staff to collect the chips, and further meeting the needs of the staff.

[0063] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision cutting device for pin shaft production and processing, comprising a machine body (1), characterized in that, A box body (102) is installed at the rear side of the top of the machine body (1). A robotic arm (101) for transferring external raw materials (105) is arranged at the front side of the top of the machine body (1). A first processing mechanism (2) and a polishing mechanism (5) are installed at the rear side inside the box body (102). The polishing mechanism (5) is located above the first processing mechanism (2). Rotating mechanisms (3) are installed on both the left and right sides inside the box body (102). A second processing mechanism (4) is arranged at the front side inside the box body (102). The first processing mechanism (2) is used for clamping the raw materials (105) and opening two groups of holes in the raw materials (105). The rotating mechanisms (3), the second processing mechanism (4) and the polishing mechanism (5) cooperate to automatically produce two pin shafts at one time. A baffle (103) is rotatably connected to the top of the box body (102). A motor (104) for driving the baffle (103) to rotate is arranged on the top wall of the box body (102).

2. The precision cutting device for pin shaft production and processing according to claim 1, characterized in that, The first processing mechanism (2) includes two groups of fixed blocks (201) welded to the rear side inside the box body (102). A first threaded rod (202) is rotatably connected between the two groups of fixed blocks (201). The thread directions of the two ends of the first threaded rod (202) are opposite. Two movable frames (205) and a movable plate (216) are threadedly connected to both ends of the outer surface of the first threaded rod (202). The movable frames (205) are slidably connected to the outer surface of the first fixed rod (203). The two ends of the first fixed rod (203) are respectively welded to the inner walls of the two groups of fixed blocks (201). A first servo motor (204) for driving the first threaded rod (202) to rotate is installed on the outer side wall of one of the fixed blocks (201).

3. The precision cutting device for pin shaft production and processing according to claim 2, characterized in that, The first processing mechanism (2) further includes a second threaded rod (212) and a second fixed rod (213). A first lead screw (206) is rotatably connected inside the movable frame (205). A lifting plate (209) is threadedly connected to the outer surface of the first lead screw (206). The lifting plate (209) is slidably connected to a first guide rod (207). The first guide rod (207) is fixedly installed inside the movable frame (205). A first stepping motor (208) is arranged at the top of the movable frame (205). The top of the first lead screw (206) is fixedly connected to the output end of the first stepping motor (208). And a first electric push rod (210) is installed on the front side of the lifting plate (209). The output end of the first electric push rod (210) is fixedly installed with a connecting frame (211). The second threaded rod (212) is rotatably connected inside the connecting frame (211). The second fixed rod (213) is welded inside the connecting frame (211). Two groups of clamping members (215) are slidably installed on the second fixed rod (213). The two groups of clamping members (215) are respectively threadedly connected to both ends of the second threaded rod (212). And the thread directions opened at both ends of the second threaded rod (212) are opposite. A second servo motor (214) for driving the second threaded rod (212) to rotate is installed at the top of the connecting frame (211).

4. The precision cutting device for pin shaft production and processing according to claim 2, characterized in that, A second electric push rod (217) is installed on the front side of the movable plate (216). The output end of the second electric push rod (217) is fixedly connected with a mounting member (218). A first driving motor (219) is installed inside the mounting member (218). The output end of the first driving motor (219) is fixedly connected with a first drilling head (220).

5. The precision cutting device for pin shaft production and processing according to claim 1, characterized in that, The rotating mechanism (3) includes a second lead screw (301), a first movable block (304) and a second movable block (310). The second lead screw (301) is rotatably connected inside the box body (102). The first movable block (304) and the second movable block (310) are threadedly connected to the second lead screw (301). The first movable block (304) and the second movable block (310) are both slidably connected to a second guide rod (302). The second guide rod (302) is fixedly connected inside the box body (102). The outer end of the second lead screw (301) is fixedly installed at the output end of a second stepping motor (303). The second stepping motor (303) is arranged outside the box body (102).

6. The precision cutting device for pin shaft production and processing according to claim 5, characterized in that, A third electric push rod (305) is rotatably connected to the outside of the first movable block (304). The output end of the third electric push rod (305) is fixedly installed with a second drilling head (306). A first driven gear (309) is fixedly connected to the outer surface of the third electric push rod (305). A second driving motor (307) is further installed on the outer side wall of the first movable block (304). The output end of the second driving motor (307) is fixedly connected with a first driving gear (308) meshing with the first driven gear (309).

7. An accurate cutting device for pin shaft production and processing according to claim 5, characterized in that, A fourth electric push rod (311) is rotatably connected to the outer side of the second movable block (310). The output end of the fourth electric push rod (311) is fixedly connected to a frame (312). A third threaded rod (313) is rotatably connected inside the frame (312). The thread directions of the two ends of the third threaded rod (313) are opposite. Two abutting members (316) are threadedly connected to both ends of the outer surface of the third threaded rod (313). A third servo motor (315) is installed at the top of the frame (312). The top of the third threaded rod (313) is fixedly installed at the output end of the third servo motor (315). A third fixed rod (314) is also welded inside the frame (312). The two abutting members (316) are both slidably connected to the third fixed rod (314). A second driven gear (319) is fixedly connected to the outer surface of the fourth electric push rod (311). A third driving motor (317) is also installed on the outer side wall of the second movable block (310). A second driving gear (318) is fixedly installed at the output end of the third driving motor (317). The second driving gear (318) meshes with the second driven gear (319).

8. The precision cutting device for pin shaft production and processing according to claim 1, characterized in that, The second processing mechanism (4) includes a vertical frame (401) welded to the front side inside the box body (102). A third stepping motor (402) is arranged at the inner bottom end of the vertical frame (401). The output end of the third stepping motor (402) is fixedly connected to a third lead screw (403). A third guide rod (404) is welded inside the vertical frame (401). A lifting member (405) is slidably connected to the third guide rod (404). The lifting member (405) is threadedly connected to the outer surface of the third lead screw (403). The top of the lifting member (405) is connected to a fixed frame (406).

9. The precision cutting device for pin shaft production and processing according to claim 8, characterized in that, A fourth lead screw (407) is rotatably connected inside the fixed frame (406). A cutting tool (410) is threadedly connected to the fourth lead screw (407). The cutting tool (410) is slidably connected to a fourth guide rod (408). The fourth guide rod (408) is welded inside the fixed frame (406). A fourth stepping motor (409) is arranged outside the fixed frame (406). The outer end of the fourth lead screw (407) is fixedly installed at the output end of the fourth stepping motor (409).

10. A precision cutting device for pin shaft production and processing according to claim 1, characterized in that, The polishing mechanism (5) includes a fifth lead screw (502), a fifth guide rod (503) and a moving plate (505). A horizontal frame (501) is welded to the inner top of the box body (102). The fifth lead screw (502) is rotatably connected inside the horizontal frame (501). The fifth guide rod (503) is fixedly installed inside the horizontal frame (501). The moving plate (505) is threadedly connected to the outer surface of the fifth lead screw (502). The moving plate (505) is slidably connected to the fifth guide rod (503). And a fifth stepper motor (504) for driving the fifth lead screw (502) to rotate is arranged on the outer side wall of the horizontal frame (501). A polishing plate (506) and a driving wheel (508) are rotatably connected to the outer side of the moving plate (505). A driven wheel (509) is arranged on the polishing plate (506). The driving wheel (508) is drivingly connected to the driven wheel (509) through a belt (510). A fourth driving motor (507) is further installed on the other outer side of the moving plate (505). The driving wheel (508) is fixedly connected to the output end of the fourth driving motor (507).

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