A CNC boring and drilling fixture for precision machining of crawler chain links

Abstract

The present invention relates to the field of fixture technology, and specifically to a CNC boring and drilling fixture for precision machining of track chain links, comprising a V-shaped frame, wherein the upper portion of the V-shaped frame is provided with a clamping mechanism for clamping the track chain links, the lower portion of the V-shaped frame is provided with a feeding mechanism, and the upper portion of the V-shaped frame is fixedly provided with air blow pipes at equal intervals along the front-rear direction. The present invention rotates the mounting plate to a vertical state, and then drives the material storage part to move to the left by moving the V-shaped frame to the left, so that the push plate assembly can push the supporting plate to move to the left, so that the track chain links processed on the mounting plate can be automatically unloaded under the action of gravity, and then the track chain links to be processed are automatically placed on the mounting plate through the pusher assembly, thereby automatically completing the replacement of the track chain links and improving the machining efficiency. The present invention can blow metal debris on the mounting plate through the air blow pipe, thereby automatically cleaning the mounting plate.

Description

Technical Field

[0001] The invention relates to the technical field of fixtures, in particular to a numerically controlled boring and drilling fixture for precise machining of crawler chain links. Background Art

[0002] The track chain is composed of multiple track links hinged at the end. The two ends of the track links are arc-shaped and have connecting pin holes inside. They are used to hinge the track links together by installing pins to form a complete track chain. The sides of the track links are provided with mounting holes for connecting and fixing the track plates. Currently, CNC boring and drilling equipment is mainly used to bore the connecting pin holes and drill the mounting holes. During processing, the position of the track links needs to be firmly fixed to ensure the processing accuracy.

[0003] At present, the track chain links are mainly clamped and fixed by special fixtures designed according to the shape of the track chain links. The fixture is fixedly installed inside the CNC boring and drilling equipment. During processing, the operator places the track chain links inside the fixture, clamps the track chain links through the fixture, and then the CNC boring and drilling equipment processes the track chain links.

[0004] However, although the existing clamp can provide clamping and fixing for the track chain links, it is still necessary to manually place the track chain links inside the clamp, and after boring and drilling are completed, the track chain links inside the clamp need to be manually replaced, which reduces the boring and drilling efficiency of the track chain links. After boring and drilling are completed, it is still necessary to manually clean the metal debris on the clamp through air blowing equipment, thereby further reducing the processing efficiency of the track chain links. Summary of the invention

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a CNC boring and drilling fixture for precision machining of track chain links, comprising a V-shaped frame, the upper part of the V-shaped frame is provided with a clamping mechanism for clamping the track chain links, the lower part of the V-shaped frame is provided with a feeding mechanism, and the upper part of the V-shaped frame is fixedly provided with air pipes at equal intervals along the front and rear directions.

[0006] The clamping mechanism includes a pin shaft column rotatably arranged inside the upper horizontal section of the C-shaped frame. An installation plate is fixedly connected to the pin shaft column. A lifting plate is slidably arranged vertically on the vertical section of the C-shaped frame. Both the front and rear sides of the lifting plate are hinged to the middle of the installation plate through connecting plates. A regulating plate is slidably arranged along the length direction of the installation plate on the side of the installation plate away from the pin shaft column. A supporting plate is slidably arranged along the thickness direction of the installation plate on the regulating plate. A limiting component for clamping one end of the clamping track chain link is arranged on the side of the installation plate away from the supporting plate. A fixing component for clamping the other end of the clamping track chain link is arranged in the middle of the installation plate. A pressing component for pressing the track chain link onto the installation plate is arranged in the middle of the installation plate. The C-shaped frame and the installation plate jointly set a locking component for limiting the installation plate.

[0007] The feeding mechanism includes a U-shaped frame slidably arranged along the left-right direction on the upper part of the lower horizontal section of the C-shaped frame. A U-shaped storage part is fixedly installed on the upper part of the U-shaped frame. A pushing component for pushing the arranged track chain links one by one to the left is arranged on the storage part. A pushing plate component for pushing the supporting plate is jointly arranged on the upper left side of the U-shaped frame and the C-shaped frame.

[0008] Preferably, the limiting component includes a C-shaped fixing frame fixedly installed on the side of the installation plate away from the vertical section of the C-shaped frame. Clamping plate parts slidably connected to the fixing frame along the front-rear direction are symmetrically arranged on the front and rear sides of the fixing frame close to the supporting plate.让位槽 are opened on the section of the fixing frame perpendicular to the supporting plate and on the clamping plate parts. A driving part is arranged on the side of the fixing frame away from the supporting plate.

[0009] Preferably, the driving part includes a first hydraulic rod jointly arranged between the two clamping plate parts. A synchronous plate is rotatably arranged on the side of the fixing frame away from the supporting plate. The two ends of the synchronous plate are respectively hinged to the two clamping plate parts through hinge plates.

[0010] Preferably, the fixing component includes pushing plates symmetrically arranged on the front and rear sides in the middle of the installation plate. The pushing plates are slidably connected to the installation plate along the front-rear direction. A bidirectional threaded rod is rotatably arranged in the middle of the installation plate. The two threaded sections of the bidirectional threaded rod are respectively threadedly connected to the two pushing plates. Two squeezing plates arranged front and rear are slidably arranged along the front-rear direction in the middle of the installation plate. The pushing plates are located between the two squeezing plates. A pushing spring is arranged between the squeezing plates and the installation plate. A second hydraulic rod is jointly arranged between the two squeezing plates.

[0011] Preferably, the pressing component includes moving rods symmetrically arranged on the front and rear sides in the middle of the installation plate. The moving rods are slidably connected to the installation plate along the thickness direction of the installation plate. A resisting plate is fixedly installed on the side of the moving rod away from the vertical section of the C-shaped frame. Limiting sleeves are symmetrically and fixedly installed on the front and rear sides in the middle of the installation plate. The limiting sleeves are located outside the coaxial center of the moving rods at the corresponding positions. A moving part for driving the moving rods to slide and rotate is arranged on the installation plate.

[0012] Preferably, the moving part includes a moving plate rotatably arranged together at one end of the moving rod away from the abutting plate. A limiting groove is formed in the limiting sleeve. A section of the limiting groove close to the mounting plate is of a straight-line structure, and a section of the limiting groove away from the mounting plate is of a spiral structure. The moving rod slides inside the corresponding limiting groove through the protruding column on it. An electric push rod is fixedly installed on the moving plate, and the telescopic section of the electric push rod is fixedly connected to the mounting plate.

[0013] Preferably, the locking assembly includes a multi-stage telescopic rod fixedly installed on the left side of the lower horizontal section of the U-shaped frame. The uppermost telescopic section of the multi-stage telescopic rod is fixedly connected to the lifting plate. Push plates are symmetrically arranged on the upper side of the upper horizontal section of the U-shaped frame in the front and back. A spiral spring is arranged between the push plate and the U-shaped frame. A positioning hole is formed on the side of the mounting plate away from the pin shaft column. A locking column for inserting into the positioning hole is fixedly installed on the push plate.

[0014] Preferably, the material pushing assembly includes baffle plates symmetrically arranged in the front and back inside the storage part. The right side of the baffle plate is slidably connected to the storage part in the front and back direction through a guiding square column. A main spring is arranged between the two baffle plates. A pushing plate is slidably arranged in the left and right direction at the lower part of the storage part. A return spring is arranged between the pushing plate and the storage part. Blocking plate parts are symmetrically arranged in the front and back on the left side of the storage part. The blocking plate parts are slidably connected to the storage part in the front and back direction. A two-way hydraulic rod is fixedly installed on the lower left side of the storage part. The two telescopic sections of the two-way hydraulic rod are respectively fixedly connected to the blocking plate parts.

[0015] Preferably, the push plate assembly includes a driving plate slidably arranged along the length direction of the mounting plate at one end of the supporting plate close to the vertical section of the U-shaped frame. Guide rods are symmetrically fixedly installed on the driving plate in the front and back. The guide rods slide through the mounting plate in the thickness direction of the mounting plate. A compression spring is arranged between the driving plate and the mounting plate. Support plates are symmetrically fixedly installed on the upper left side of the U-shaped frame. A pushing square rod is slidably arranged in the front and back direction through an inserting rod on the side where the support plates are close to each other. A pushing spring is arranged between the pushing square rod and the support plates. Triangular plates are symmetrically fixedly installed on the side of the mounting plate away from the vertical section of the U-shaped frame.

[0016] Preferably, a lead screw is rotatably arranged at the rear side of the lower part of the U-shaped frame. The lead screw is threadedly connected to the U-shaped frame. An actuating motor is fixedly installed at the lower left side of the U-shaped frame. The output shaft of the actuating motor is fixedly connected to the lead screw. The air outlet of the air blowing pipe faces downward. An air guide hole communicating with the air blowing pipe is formed on the upper side of the horizontal section of the U-shaped frame. The air guide hole is connected to an air pump through a pipeline. A hole groove for opening and closing the air guide hole is formed on the pin shaft column. An adjusting screw column threadedly connected to the adjusting plate is rotatably arranged on the side of the mounting plate away from the pin shaft column.

[0017] The beneficial effects of the present invention are as follows: 1. The present invention adopts a lifting plate to drive the mounting plate to rotate to a vertical state through a connecting plate, and then drives the material storage part to move to the left by moving the cam frame to the left, so that the push plate assembly pushes the supporting plate to move to the left, so that the crawler chain links processed on the mounting plate can be automatically unloaded under the action of gravity, and then the crawler chain links to be processed are automatically placed on the mounting plate through the pushing assembly, thereby automatically completing the replacement of the crawler chain links and improving the processing efficiency.

[0018] 2. After the mounting plate is rotated to a vertical state, the present invention automatically connects the air blowing pipe with the air pump through the pin shaft column, so that when the mounting plate unloads the processed crawler chain links, the metal debris on the mounting plate is blown through the air blowing pipe, thereby automatically cleaning the mounting plate, further improving the processing efficiency, and cleaning the metal debris on the mounting plate when the mounting plate is in a vertical state, and the metal debris can be uniformly blown to the lower side of the mounting plate, thereby preventing the metal debris flying in the air from falling on the mounting plate again and affecting the processing accuracy.

[0019] 3. The present invention adopts a locking assembly to automatically lock and limit the mounting plate rotated to a horizontal state, thereby preventing the mounting plate from shaking during processing and causing a decrease in processing accuracy, further ensuring the processing accuracy.

[0020] Fourth, the present invention adopts a limiting component and a retaining component to clamp and limit one end and the middle of the track chain link, so as to prevent the track chain link from being arranged tilted on the mounting plate, and lock the front and rear positions of the track chain link at the same time. The pressing component can press and fix the track chain link tightly on the mounting plate, and the adjusting plate drives the supporting plate to lock the position of the track chain link along the length direction of the mounting plate, so that the track chain link is fixed on the mounting plate by locking in multiple directions, thereby preventing the track chain link from being misplaced, and further ensuring the processing accuracy of the track chain link. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the clamping mechanism of the present invention after removing the multi-stage telescopic rod.

[0024] Figure 3 It is a structural schematic diagram of the pin shaft column, the mounting plate, the pressing assembly, the active plate and the guide rod in the present invention.

[0025] Figure 4 It is a cross-sectional view of the mounting plate and the pressing assembly in the present invention.

[0026] Figure 5It is a schematic structural diagram of the mounting plate, adjusting plate, supporting plate, adjusting stud, active plate, guide rod and triangular plate in the present invention.

[0027] Figure 6 It is a partial cross-sectional view of the pin shaft column, mounting plate and blowing pipe in the present invention.

[0028] Figure 7 It is a partial cross-sectional view of the C-shaped frame, mounting plate, pushing plate and locking column in the present invention.

[0029] Figure 8 It is a schematic structural diagram of the feeding mechanism in the present invention after removing the active plate, guide rod, triangular plate, lead screw and execution motor.

[0030] Fig. 9 It is a cross-sectional view of the storage part, pushing plate and blocking plate part.

[0031] In the figure: 1. C-shaped frame; 2. Clamping mechanism; 3. Feeding mechanism; 4. Blowing pipe; 20. Pin shaft column; 21. Mounting plate; 22. Lifting plate; 23. Connecting plate; 24. Adjusting plate; 25. Supporting plate; 26. Limiting component; 27. Fixing component; 28. Pressing component; 29. Locking component; 31. U-shaped frame; 32. Storage part; 33. Pushing component; 34. Pushing plate component; 35. Lead screw; 36. Execution motor; 211. Adjusting stud; 261. Fixed frame; 262. Clamping plate part; 263. Driving part; 271. Pushing plate; 272. Bidirectional threaded rod; 273. Extrusion plate; 274. Second hydraulic rod; 281. Moving rod; 282. Abutting plate; 283. Limiting sleeve; 284. Moving part; 291. Multistage telescopic rod; 292. Pushing plate; 293. Locking column; 331. Material blocking plate; 332. Pushing plate; 333. Blocking plate part; 334. Bidirectional hydraulic rod; 341. Active plate; 342. Guide rod; 343. Support plate; 344. Pushing square rod; 345. Triangular plate; 2631. First hydraulic rod; 2632. Synchronous plate; 2633. Hinge plate; 2841. Moving plate; 2842. Electric push rod. Detailed implementation manners

[0032] The embodiments of the present invention are described in detail below. The described embodiments are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention. For those not specified in the embodiments, the techniques or conditions described in the literature in the field or according to the product specifications are followed.

[0033] Refer to Figure 1 、 Figure 2 、 Figure 6 and Figure 8, a numerically controlled boring and drilling fixture for precision machining of crawler chain links, comprising a C-shaped frame 1, a clamping mechanism 2 for clamping crawler chain links is arranged on the upper part of the C-shaped frame 1, a feeding mechanism 3 is arranged on the lower part of the C-shaped frame 1, and air blowing pipes 4 are fixedly installed at equal intervals along the front-back direction on the upper part of the C-shaped frame 1.

[0034] When machining crawler chain links is required, first, the operator places the crawler chain links to be machined in batches inside the feeding mechanism 3. Subsequently, the feeding mechanism 3 automatically feeds the crawler chain links into the clamping mechanism 2. Then, the clamping mechanism 2 moves the crawler chain links to be machined inside it to the machining position, and the crawler chain links inside the clamping mechanism 2 are machined by a numerically controlled boring and drilling device. After that, the clamping mechanism 2 moves back to the feeding position again and automatically discharges the machined crawler chain links. At the same time, the air blowing pipes 4 clean the metal chips on the clamping mechanism 2. Then, the feeding mechanism 3 feeds the crawler chain links to be machined into the clamping mechanism 2 again.

[0035] Refer to Figure 1 and Figure 2 , the clamping mechanism 2 includes a pin shaft column 20 rotatably arranged inside the horizontal section on the upper side of the C-shaped frame 1. An installation plate 21 is fixedly connected to the pin shaft column 20. A lifting plate 22 is slidably arranged along the vertical direction on the vertical section of the C-shaped frame 1. Both the front and rear sides of the lifting plate 22 are hinged to the middle of the installation plate 21 through connecting plates 23. The C-shaped frame 1 and the installation plate 21 jointly set a locking assembly 29 for limiting and installing the installation plate 21. The locking assembly 29 includes a multi-stage telescopic rod 291 fixedly installed on the left side of the lower horizontal section of the C-shaped frame 1. The uppermost telescopic section of the multi-stage telescopic rod 291 is fixedly connected to the lifting plate 22.

[0036] In the initial state, the telescopic section of the multi-stage telescopic rod 291 is in a contracted state, causing the multi-stage telescopic rod 291 to drive the lifting plate 22 to move downward. The lifting plate 22 pulls the installation plate 21 to rotate around the pin shaft column 20 between the two horizontal sections of the C-shaped frame 1, and the installation plate 21 is in a vertical state.

[0037] Refer to Figure 1 , Figure 2 and Figure 5, the clamping mechanism 2 further includes an adjusting plate 24 slidably arranged on the side of the mounting plate 21 away from the pin shaft column 20 along the length direction of the mounting plate 21. A regulating screw column 211 threadedly connected to the adjusting plate 24 is rotatably arranged on the side of the mounting plate 21 away from the pin shaft column 20. A supporting plate 25 is slidably arranged on the adjusting plate 24 along the thickness direction of the mounting plate 21. A limiting component 26 is arranged on the mounting plate 21. The limiting component 26 includes a C-shaped fixing frame 261 fixedly installed on the side of the mounting plate 21 away from the vertical section of the C-shaped frame 1. A retaining component 27 is arranged in the middle of the mounting plate 21. The retaining component 27 includes pushing plates 271 symmetrically arranged before and after in the middle of the mounting plate 21. The pushing plates 271 are slidably connected to the mounting plate 21 in the front-back direction. A bidirectional threaded rod 272 is rotatably arranged in the middle of the mounting plate 21. The two threaded sections of the bidirectional threaded rod 272 are respectively threadedly connected to the two pushing plates 271.

[0038] The operator first rotates the regulating screw column 211 with an Allen wrench according to the length of the crawler link, so that the regulating screw column 211 drives the adjusting plate 24 to adjust its position along the length direction of the mounting plate 21. The adjusting plate 24 drives the supporting plate 25 to move synchronously, so that the distance between the longitudinal section of the fixing frame 261 and the supporting plate 25 is equal to the length of the crawler link. Subsequently, the operator rotates the bidirectional threaded rod 272 according to the width of the crawler link, so that the bidirectional threaded rod 272 drives the two pushing plates 271 to adjust their positions forward and backward at the same time, so that the distance between a section of the front side of the fixing frame 261 parallel to the front side of the mounting plate 21 and the front pushing plate 271 is equal to the width of the crawler link. Similarly, the distance between a section of the rear side of the fixing frame 261 parallel to the rear side of the mounting plate 21 and the rear pushing plate 271 is also equal to the width of the crawler link.

[0039] Refer to Figure 1 , Figure 8 and Fig. 9 , the feeding mechanism 3 includes a U-shaped frame 31 slidably arranged on the upper part of the lower horizontal section of the C-shaped frame 1 in the left-right direction. A U-shaped storage member 32 is fixedly installed on the upper part of the U-shaped frame 31. A pushing component 33 for pushing the arranged crawler links one by one to the left is arranged on the storage member 32. The pushing component 33 includes baffle plates 331 symmetrically arranged before and after inside the storage member 32. The right side of the baffle plate 331 is slidably connected to the storage member 32 in the front-back direction through a guiding square column. A driving spring is arranged between the two baffle plates 331. A pushing plate 332 is slidably arranged on the lower part of the storage member 32 in the left-right direction. A return spring is arranged between the pushing plate 332 and the storage member 32. Blocking plate members 333 are symmetrically arranged before and after on the left side of the storage member 32. The blocking plate members 333 are slidably connected to the storage member 32 in the front-back direction. A two-way hydraulic rod 334 is fixedly installed on the lower left side of the storage member 32. The two telescopic sections of the two-way hydraulic rod 334 are respectively fixedly connected to the blocking plate members 333.

[0040] The operator pre - places a batch of crawler chain links at the front and rear positions inside the storage member 32. The active spring pushes the two baffle plates 331 away from each other through its own elastic force, so that the baffle plates 331 push the crawler chain links against the inner wall of the vertical section of the storage member 32. In the initial state, both telescopic sections of the double - acting hydraulic rod 334 are in a contracted state, so that the double - acting hydraulic rod 334 drives the two blocking plate members 333 to move to block the left side of the storage member 32. At the same time, the return spring pushes the crawler chain links inside the storage member 32 to the left through the push plate 332, so that the left - most crawler chain link abuts against the blocking plate member 333 at the corresponding position.

[0041] It should be noted that the left side surface of the blocking plate member 333 is flush with the left side surface of the storage member 32. At the upper and lower positions on the side of the blocking plate member 333 close to the middle of the storage member 32, blocking support plates are fixedly installed for blocking the two ends of the crawler chain link that need to be bored. The right side surface of the blocking support plate has an arc - shaped surface structure that matches the arc - shaped structure of the corresponding end of the crawler chain link.

[0042] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 Refer to

[0043] Refer to Figure 2 、 Figure 3 and Figure 4 Refer to

[0044] When it is necessary to load the track chain links inside the storage member 32 onto the mounting plate 21, the telescopic section of the electric push rod 2842 is contracted, so that the electric push rod 2842 drives the moving plate 2841 to move towards the mounting plate 21. The moving plate 2841 drives the abutting plate 282 thereon to move synchronously away from the mounting plate 21 through the two moving rods 281, so that the moving rods 281 drive the protruding columns thereon to move to the end of the spiral section of the limiting groove on the limiting sleeve 283. The protruding columns drive the abutting plate 282 to rotate to a position parallel to the front side of the mounting plate 21 through the moving rods 281, thereby preventing the abutting plate 282 from blocking the loading of the track chain links.

[0045] Refer to Figure 1 , a lead screw 35 is rotatably arranged at the rear side of the lower part of the C-shaped frame 1. The lead screw 35 is threadedly connected to the U-shaped frame 31. An actuating motor 36 is fixedly installed at the lower left side of the C-shaped frame 1. The output shaft of the actuating motor 36 is fixedly connected to the lead screw 35.

[0046] When the abutting plate 282 rotates to a position parallel to the front side of the mounting plate 21, the actuating motor 36 is started to drive the lead screw 35 to rotate. The lead screw 35 drives the storage member 32 to move to the left through the U-shaped frame 31, so that the left side surface of the storage member 32 moves to a position flush with the side of the fixed frame 261 away from the mounting plate 21.

[0047] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 8 , the feeding mechanism 3 further includes a push plate assembly 34 commonly arranged on the C-shaped frame 1 and the U-shaped frame 31. The push plate assembly 34 includes a driving plate 341 slidably arranged along the length direction of the mounting plate 21 at one end of the supporting plate 25 close to the vertical section of the C-shaped frame 1. Guide rods 342 are symmetrically and fixedly installed on the driving plate 341 in the front and back directions. The guide rods 342 are slidably inserted through the mounting plate 21 in the thickness direction thereof. A compression spring is arranged between the driving plate 341 and the mounting plate 21. Support plates 343 are symmetrically and fixedly installed on the upper left side of the U-shaped frame 31 in the front and back directions. A pushing square rod 344 is slidably arranged in the front and back directions through the inserting rod on the side where the support plates 343 are close to each other. A resisting spring is arranged between the pushing square rod 344 and the support plates 343. Triangular plates 345 are symmetrically and fixedly installed on the side of the mounting plate 21 away from the vertical section of the C-shaped frame 1 in the front and back directions.

[0048] When the u-shaped frame 31 moves to the left, the u-shaped frame 31 drives the pushing square rod 344 to move to the left synchronously through the support plate 343, so that the pushing square rod 344 moves to rest against the guide rod 342, and the guide rod 342 drives the supporting plate 25 to move to the left through the active plate 341, so that the supporting plate 25 moves to the side away from the vertical section of the u-shaped frame 1 and is flush with the side of the mounting plate 21 away from the vertical section of the u-shaped frame 1, and at the same time compresses the compression spring, so that the supporting plate 25 cannot support the track chain links on the mounting plate 21, and at this time, the left side surface of the material storage piece 32 is still at a distance from the side of the fixing frame 261 away from the mounting plate 21, so as to facilitate the unloading of the track chain links processed on the mounting plate 21 under the action of gravity.

[0049] Then, the cam frame 31 continues to be moved to the left, so that the pushing square rod 344 abuts against the inclined surface of the triangular plate 345, and the pushing square rod 344 moves along the inclined surface of the triangular plate 345 in the direction away from the material storage member 32, so that the pushing square rod 344 moves to the side of the guide rod 342 at the corresponding position away from the material storage member 32, and then the pushing square rod 344 no longer abuts against the guide rod 342, and then the compression spring drives the supporting plate 25 to move to the right and reset by pushing the active plate 341.

[0050] When the left side of the material storage piece 32 moves to a position flush with the side of the fixing frame 261 away from the mounting plate 21, the two telescopic sections of the two-way hydraulic rod 334 are extended to drive the two blocking plates 333 to move away from the material storage piece 32, so that the return spring pushes the track chain links inside the material storage piece 32 to the left through the pushing plate 332, thereby pushing the leftmost track chain link to rest against the mounting plate 21, and at the same time supporting the leftmost track chain link through the supporting plate 25, and then retracting the two telescopic sections of the two-way hydraulic rod 334 to drive the two blocking plates 333 to move to the initial position.

[0051] See also Figure 1 , Figure 2 and Figure 3 The limiting assembly 26 also includes a clamping plate 262 symmetrically arranged on the side of the fixed frame 261 close to the supporting plate 25, and the clamping plate 262 is slidably connected to the fixed frame 261 along the front and rear directions. A section of the fixed frame 261 perpendicular to the supporting plate 25 and the clamping plate 262 are provided with a clearance groove. The setting of the clearance groove facilitates the boring tool to process the crawler chain link. A driving part 263 is provided on the side of the fixed frame 261 away from the supporting plate 25. The driving part 263 includes a No. 1 hydraulic rod 2631 jointly arranged between the two clamping plates 262. A synchronous plate 2632 is rotatably provided on the side of the fixed frame 261 away from the supporting plate 25. The two ends of the synchronous plate 2632 are respectively hinged to the two clamping plates 262 through hinge plates 2633.

[0052] When the crawler chain link to be processed is pushed to abut against the mounting plate 21, the telescopic section of the No. 1 hydraulic rod 2631 is extended, and the No. 1 hydraulic rod 2631 drives the two clamping plates 262 to move away from each other. When the clamping plate 262 moves, the synchronous plate 2632 is driven to rotate through the hinge plate 2633 at the corresponding position. The synchronous plate 2632 can drive the other clamping plate 262 to move synchronously in the opposite direction through another hinge plate 2633, so that the two clamping plates 262 move synchronously in the opposite direction, so that the clamping plate 262 pushes the end of the crawler chain link close to the pin shaft column 20 to abut against the fixing frame 261.

[0053] Continue reading Figure 1 , Figure 2 and Figure 3 The retaining assembly 27 also includes two extrusion plates 273 slidably arranged in the middle of the mounting plate 21 along the front-to-back direction. The two extrusion plates 273 are arranged front to back. The two push plates 271 are located between the two extrusion plates 273. A push spring is arranged between the extrusion plate 273 and the mounting plate 21. A second hydraulic rod 274 is commonly arranged between the two extrusion plates 273.

[0054] When the clamping plate 262 and the fixing frame 261 clamp and limit the end of the track link close to the pin shaft column 20, the telescopic section of the No. 2 hydraulic rod 274 is retracted, so that the No. 2 hydraulic rod 274 drives the two extrusion plates 273 to approach each other, so that the extrusion plate 273 pushes the middle part of the track link to press against the push plate 271 at the corresponding position, and then the middle part of the track link is limited by clamping the extrusion plate 273 and the push plate 271, and then the reverse execution motor 36 drives the storage part 32 to move to the right to the initial position.

[0055] Then, the telescopic section of the electric push rod 2842 is extended, so that the electric push rod 2842 drives the abutment plate 282 to move toward the direction close to the mounting plate 21 through the moving rod 281. At the same time, the moving rod 281 drives the abutment plate 282 to rotate to a position perpendicular to the front side of the mounting plate 21, so that the abutment plate 282 rotates to the position corresponding to the track chain link. At this time, the moving rod 281 drives the raised column thereon to move to the inside of the straight section of the limiting groove, and then continues to extend the telescopic section of the electric push rod 2842, so that the abutment plate 282 presses the track chain link onto the mounting plate 21.

[0056] Then, the telescopic section of the multi-stage telescopic rod 291 is extended to drive the mounting plate 21 to rotate to a position flush with the upper side of the yoke 1, so that the mounting plate 21 drives the crawler chain link to rotate from an upright state to a horizontal state.

[0057] See also Figure 1 and Figure 7, the locking component 29 further includes push plates 292 symmetrically arranged on the upper side of the horizontal section on the upper side of the C-shaped frame 1, a helical spring is arranged between the push plates 292 and the C-shaped frame 1, a positioning hole is opened on the side of the mounting plate 21 away from the pin shaft column 20, and a locking column 293 for inserting into the positioning hole is fixedly installed on the push plate 292.

[0058] When the mounting plate 21 rotates to a position flush with the upper side of the C-shaped frame 1, the positioning hole on the mounting plate 21 rotates to the position corresponding to the locking column 293. Subsequently, the crawler link is processed by a numerical control boring and drilling device. The boring tool in the horizontal direction of the numerical control boring and drilling device contacts the push plate 292 before contacting the crawler link, so that the boring tool drives the locking column 293 to insert into the positioning hole by pushing the push plate 292, thereby fixedly connecting the mounting plate 21 and the C-shaped frame 1 together to prevent the mounting plate 21 from shaking during processing.

[0059] It should be noted that in practical applications, a fixing plate for pushing the push plate 292 needs to be fixedly installed at the lower part of the boring tool holder, so that when the boring tool moves, the push plate 292 is pushed towards the middle of the C-shaped frame 1 through the fixing plate.

[0060] Refer to Figure 1 , Figure 2 and Figure 6 , the air outlet of the air blowing pipe 4 faces downward, a guide air hole communicating with the air blowing pipe 4 is opened on the upper side of the horizontal section of the C-shaped frame 1, the guide air hole is connected to an air pump through a pipeline, and a hole groove for opening and closing the guide air hole is opened on the pin shaft column 20. The pipeline and the air pump are not shown in the figure.

[0061] When the mounting plate 21 rotates to a position flush with the upper side of the C-shaped frame 1, the mounting plate 21 drives the pin shaft column 20 to rotate synchronously, so that the axis of the hole groove on the pin shaft column 20 and the axis of the guide air hole inside the C-shaped frame 1 are arranged perpendicular to each other, thereby closing the guide air hole of the C-shaped frame 1 by the pin shaft column 20 to prevent the airflow blown by the air pump from blowing up metal chips and scattering them everywhere during processing, which affects the processing accuracy. When the processing is completed, the mounting plate 21 is rotated to the initial position, so that the axis of the hole groove on the pin shaft column 20 is communicated with the axis of the guide air hole inside the C-shaped frame 1, and the airflow blown by the air pump blows downward through the air blowing pipe 4, so that the air blowing pipe 4 blows the metal chips on the mounting plate 21 downward. Subsequently, the storage part 32 is moved to the left to replace the crawler link on the mounting plate 21.

[0062] Refer to Figure 1-Figure 9When clamping the track link, the present invention also includes the following steps: In the first step, the operator pre-rotates the adjustment stud 211 and the bidirectional threaded rod 272 so that the distance between the longitudinal section of the fixing frame 261 and the supporting plate 25 is equal to the length of the track link, and at the same time, the distance between a section of the fixing frame 261 parallel to the front side of the mounting plate 21 and the push plate 271 is equal to the width of the track link.

[0063] In the second step, the operator places the track chain links in batches at the front and rear sides of the storage piece 32, and pushes the track chain links against the inner wall of the vertical section of the storage piece 32 through the blocking plate 331. The return spring pushes the track chain links inside the storage piece 32 to the left through the pushing plate 332, so that the leftmost track chain link abuts against the blocking plate 333 at the corresponding position.

[0064] The third step is to retract the telescopic section of the electric push rod 2842 to drive the movable plate 2841 to move toward the mounting plate 21, and the abutment plate 282 to move away from the mounting plate 21. At the same time, the abutment plate 282 is rotated to a position parallel to the front side of the mounting plate 21, thereby preventing the abutment plate 282 from blocking the loading of the crawler chain link, and starting the execution motor 36 to drive the storage piece 32 to move to the left.

[0065] In the fourth step, the cam frame 31 drives the supporting plate 25 to move to the left by pushing the square rod 344, so as to facilitate the unloading of the crawler chain links processed on the mounting plate 21 under the action of gravity, and then continue to move the cam frame 31 to the left, so that the pushing square rod 344 no longer abuts against the guide rod 342, and then the elastic force of the compression spring itself drives the supporting plate 25 to move to the right and reset by pushing the active plate 341.

[0066] In the fifth step, the two telescopic sections of the two-way hydraulic rod 334 are extended to drive the two blocking plates 333 to move away from the storage member 32, so that the return spring pushes the track chain links inside the storage member 32 to the left through the push plate 332, thereby pushing the leftmost track chain link to rest against the mounting plate 21.

[0067] In the sixth step, the telescopic section of the No. 1 hydraulic rod 2631 is extended to drive the two clamping plates 262 to move away from each other, so that the clamping plate 262 pushes the end of the crawler chain link close to the pin shaft column 20 to rest on the fixing frame 261.

[0068] In the seventh step, extend the telescopic section of the second hydraulic rod 274, so that the second hydraulic rod 274 drives the two pressing plates 273 to move away from each other, thereby enabling the pressing plates 273 to push the middle part of the crawler link against the corresponding push plate 271. Furthermore, the middle part of the crawler link is limited by the clamping of the pressing plate 273 and the push plate 271. Subsequently, reverse the driving of the motor 36 to drive the material storage member 32 to move to the initial position to the right.

[0069] In the eighth step, extend the telescopic section of the electric push rod 2842, so that the abutting plate 282 presses the crawler link against the mounting plate 21. Then, extend the telescopic section of the multi-stage telescopic rod 291 to drive the mounting plate 21 to rotate to a position flush with the upper side of the C-shaped frame 1, thereby enabling the mounting plate 21 to drive the crawler link to rotate from the vertical state to the horizontal state.

[0070] In the ninth step, process the crawler link through a numerically controlled boring and drilling device. The boring tool in the horizontal direction of the numerically controlled boring and drilling device contacts the push plate 292 through the fixing plate before contacting the crawler link, so that the boring tool drives the locking column 293 to insert into the positioning hole by pushing the push plate 292, thereby fixedly connecting the mounting plate 21 and the C-shaped frame 1 together to prevent the mounting plate 21 from shaking during processing.

[0071] In the tenth step, after processing is completed, rotate the mounting plate 21 to the initial position, so that the axis of the hole groove on the pin shaft 20 communicates with the axis of the air guide hole inside the C-shaped frame 1. The airflow blown by the air pump blows downward through the blow pipe 4, so that the blow pipe 4 blows the metal debris on the mounting plate 21 downward. Subsequently, move the material storage member 32 to the left to replace the crawler link on the mounting plate 21.

[0072] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and still be covered by the protection scope of the present invention.

Claims

1. A CNC boring and drilling fixture for precision machining of crawler chain links, comprising a shaped frame (1), characterized in that: The upper part of the C-shaped frame (1) is provided with a clamping mechanism (2) for clamping the crawler chain links, the lower part of the C-shaped frame (1) is provided with a feeding mechanism (3), and air blowing pipes (4) are fixedly installed at equal intervals in the front-rear direction on the upper part of the C-shaped frame (1); The clamping mechanism (2) includes a pin shaft column (20) rotatably arranged inside the upper horizontal section of the C-shaped frame (1). An installation plate (21) is fixedly connected to the pin shaft column (20). A lifting plate (22) is slidably arranged in the vertical direction on the vertical section of the C-shaped frame (1). Both the front and rear sides of the lifting plate (22) are hinged to the middle of the installation plate (21) through connecting plates (23). A regulating plate (24) is slidably arranged on one side of the installation plate (21) away from the pin shaft column (20) along the length direction of the installation plate (21). A supporting plate (25) is slidably arranged on the regulating plate (24) along the thickness direction of the installation plate (21). A limiting component (26) for clamping one end of the crawler chain link is arranged on one side of the installation plate (21) away from the supporting plate (25). A fixing component (27) for clamping the other end of the crawler chain link is arranged in the middle of the installation plate (21). A pressing component (28) for pressing the crawler chain link onto the installation plate (21) is arranged in the middle of the installation plate (21). The C-shaped frame (1) and the installation plate (21) jointly are provided with a locking component (29) for limiting the installation plate (21); The feeding mechanism (3) includes a U-shaped frame (31) slidably arranged on the upper part of the lower horizontal section of the C-shaped frame (1) in the left-right direction. A U-shaped storage member (32) is fixedly installed on the upper part of the U-shaped frame (31). The storage member (32) is provided with a pushing component (33) for pushing the arranged crawler chain links one by one to the left. A pushing plate component (34) for pushing the supporting plate (25) is jointly arranged on the upper left side of the U-shaped frame (31) and the C-shaped frame (1).

2. A CNC boring and drilling fixture for precision machining of crawler chain links according to claim 1, characterized in that: The limiting component (26) includes a C-shaped fixing frame (261) fixedly installed on one side of the installation plate (21) away from the vertical section of the C-shaped frame (1). Clamping plate members (262) slidably connected to the fixing frame (261) in the front-rear direction are symmetrically arranged on the front and rear sides of the fixing frame (261) close to the supporting plate (25). Yielding grooves are formed on the section of the fixing frame (261) perpendicular to the supporting plate (25) and on the clamping plate members (262). A driving part (263) is arranged on one side of the fixing frame (261) away from the supporting plate (25).

3. The CNC boring and drilling fixture for precision machining of crawler chain links according to claim 2, characterized in that: The driving part (263) includes a first hydraulic rod (2631) jointly arranged between the two clamping plate members (262). A synchronous plate (2632) is rotatably arranged on one side of the fixing frame (261) away from the supporting plate (25). The two ends of the synchronous plate (2632) are respectively hinged to the two clamping plate members (262) through hinge plates (2633).

4. The CNC boring and drilling fixture for precision machining of crawler chain links according to claim 1, characterized in that: The retention assembly (27) includes a pushing plate (271) symmetrically arranged front and rear in the middle of the mounting plate (21). The pushing plate (271) is slidably connected to the mounting plate (21) in the front-rear direction. A bidirectional threaded rod (272) is rotatably arranged in the middle of the mounting plate (21). The two threaded sections of the bidirectional threaded rod (272) are respectively threadedly connected to the two pushing plates (271). Two pressing plates (273) arranged front and rear are slidably arranged in the middle of the mounting plate (21) in the front-rear direction. The pushing plate (271) is located between the two pressing plates (273). A pushing spring is arranged between the pressing plate (273) and the mounting plate (21). A second hydraulic rod (274) is jointly arranged between the two pressing plates (273).

5. The CNC boring and drilling fixture for precision machining of crawler chain links according to claim 1, characterized in that: The pressing assembly (28) includes moving rods (281) symmetrically arranged front and rear in the middle of the mounting plate (21). The moving rods (281) are slidably connected to the mounting plate (21) in the thickness direction of the mounting plate (21). A abutting plate (282) is fixedly installed on the side of the moving rod (281) away from the vertical section of the C-shaped frame (1). Limiting sleeves (283) are symmetrically and fixedly installed front and rear in the middle of the mounting plate (21). The limiting sleeves (283) are located outside the coaxial center of the moving rods (281) at corresponding positions. A moving part (284) for driving the moving rod (281) to slide and rotate is arranged on the mounting plate (21).

6. The CNC boring and drilling fixture for precision machining of crawler chain links according to claim 5, characterized in that: The moving part (284) includes a moving plate (2841) jointly rotatably arranged at one end of the moving rod (281) away from the abutting plate (282). A limiting groove is formed in the limiting sleeve (283). A section of the limiting groove close to the mounting plate (21) is of a straight-line section structure, and a section of the limiting groove away from the mounting plate (21) is of a spiral section structure. The moving rod (281) slides inside the limiting groove at the corresponding position through the protruding column thereon. An electric push rod (2842) is fixedly installed on the moving plate (2841). The telescopic section of the electric push rod (2842) is fixedly connected to the mounting plate (21).

7. The CNC boring and drilling fixture for precision machining of crawler chain links according to claim 1, characterized in that: The locking assembly (29) includes a multi-stage telescopic rod (291) fixedly installed on the left side of the lower horizontal section of the C-shaped frame (1). The uppermost telescopic section of the multi-stage telescopic rod (291) is fixedly connected to the lifting plate (22). Pushing plates (292) are symmetrically arranged front and rear on the upper side of the upper horizontal section of the C-shaped frame (1). A spiral spring is arranged between the pushing plate (292) and the C-shaped frame (1). A positioning hole is formed in the side of the mounting plate (21) away from the pin shaft column (20). A locking column (293) for inserting into the positioning hole is fixedly installed on the pushing plate (292).

8. The CNC boring and drilling fixture for precision machining of crawler chain links according to claim 1, characterized in that: The pusher assembly (33) includes baffle plates (331) symmetrically arranged front and back inside the storage member (32). The right side of the baffle plate (331) is slidably connected to the storage member (32) in the front-back direction through a guiding square column. An active spring is arranged between the two baffle plates (331). A pusher plate (332) is slidably arranged in the lower part of the storage member (32) in the left-right direction. A return spring is arranged between the pusher plate (332) and the storage member (32). Blocking plate members (333) are symmetrically arranged front and back on the left side of the storage member (32). The blocking plate members (333) are slidably connected to the storage member (32) in the front-back direction. A two-way hydraulic rod (334) is fixedly installed on the lower left side of the storage member (32). The two telescopic sections of the two-way hydraulic rod (334) are respectively fixedly connected to the blocking plate members (333).

9. The CNC boring and drilling fixture for precision machining of crawler chain links according to claim 1, characterized in that: The push plate assembly (34) includes an active plate (341) slidably arranged on one end of the supporting plate (25) close to the vertical section of the C-shaped frame (1) along the length direction of the mounting plate (21). Guide rods (342) are symmetrically and fixedly installed on the front and back of the active plate (341). The guide rods (342) are slidably inserted through the mounting plate (21) in the thickness direction thereof. A compression spring is arranged between the active plate (341) and the mounting plate (21). Support plates (343) are symmetrically and fixedly installed on the upper left side of the C-shaped frame (31). A pushing square rod (344) is slidably arranged in the front-back direction on the side where the support plates (343) are close to each other through an insertion rod. A pushing spring is arranged between the pushing square rod (344) and the support plates (343). Triangular plates (345) are symmetrically and fixedly installed on the side of the mounting plate (21) far from the vertical section of the C-shaped frame (1).

10. The CNC boring and drilling fixture for precision machining of crawler chain links according to claim 1, characterized in that: A lead screw (35) is rotatably arranged at the rear side of the lower part of the C-shaped frame (1). The lead screw (35) is threadedly connected to the C-shaped frame (31). An actuating motor (36) is fixedly installed on the lower left side of the C-shaped frame (1). The output shaft of the actuating motor (36) is fixedly connected to the lead screw (35). The air outlet of the air blowing pipe (4) faces downward. An air guide hole communicating with the air blowing pipe (4) is opened on the upper side of the horizontal section of the C-shaped frame (1). The air guide hole is connected to an air pump through a pipeline. A hole groove for opening and closing the air guide hole is opened on the pin shaft column (20). An adjusting screw (211) threadedly connected to the adjusting plate (24) is rotatably arranged on the side of the mounting plate (21) far from the pin shaft column (20).

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