A multi-station turning processing equipment for shaft parts

Abstract

The present invention relates to the technical field of shaft parts processing, specifically to a multi-station processing equipment for turning shaft parts, including a multi-station processing table and a turntable rotatably mounted on the multi-station processing table, the top of the turntable is provided with a plurality of placement holes evenly distributed in the circumferential direction, the turntable is provided with a depth adjustment mechanism corresponding to the placement holes and located below the placement holes, and a fixing mechanism for fixing the shaft. The present invention realizes the simultaneous fixing of shafts of multiple different diameters through the linkage cooperation of a clamping assembly, a second movable plate, a fixing assembly, a connecting assembly and a driving assembly, and at the same time the driving assembly drives the second movable plate to move downward, when the clamping assembly clamps the shaft, the fixing assembly on the second movable plate performs a secondary locking on the clamping assembly, thereby improving the fixing stability of the shaft, and at the same time the connecting assembly connects and locks the second movable plate with the turntable, thereby ensuring the stable position of the second movable plate, thereby further improving the firmness of the fixing assembly locking the clamping assembly.

Description

Technical Field

[0001] The invention relates to the technical field of shaft parts processing, in particular to a multi-station turning processing equipment for shaft parts. Background Art

[0002] Multi-station turning is an efficient machining technology that achieves synchronous or sequential machining of workpieces by setting up multiple machining positions on the same machine tool. This technology significantly improves machining efficiency and precision, especially when processing complex or mass-produced parts; shaft parts (hereinafter referred to as shaft parts) are one of the typical parts often encountered in hardware accessories. They are mainly used to support transmission parts, transmit torque and bear loads. In the mass production of shaft parts, multi-station turning equipment is generally used.

[0003] When the existing multi-station turning equipment turns the shaft, each station needs to be clamped and fixed separately. Currently, many of the shafts are clamped using three-jaw chucks. During processing, once the clamping force of the three-jaw chuck changes, it will directly affect the stability of the shaft, and then affect the processing quality. Secondly, after the shaft is vertically inserted into the placement groove and before the three-jaw chuck is clamped, it is difficult for the multi-station turning equipment to adjust the placement depth according to the length of the shaft. Shafts of different lengths are exposed to different lengths in the placement groove. If the length of the shaft exposed to the placement groove is too long, it will affect the stability of the shaft during subsequent processing. If the length of the shaft exposed to the placement groove is shorter than the required processing length, it will directly lead to ineffective processing. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a multi-station processing equipment for turning shaft parts, including a multi-station processing table and a turntable rotatably installed on the multi-station processing table, the top of the turntable is provided with a plurality of placement holes evenly distributed circumferentially, the turntable is provided with a depth adjustment mechanism corresponding to the placement holes one by one and located below the placement holes, and a fixing mechanism for fixing shafts of different diameters, the depth adjustment mechanism is used to adjust the insertion depth of the shaft in the placement hole according to the length of the shaft.

[0005] The fixing mechanism includes a clamping assembly installed on the turntable, which corresponds to the placement holes one by one and is used to elastically clamp the shaft in the placement holes in a circumferential direction. A movable plate 2 is movably installed on the top of the turntable, and a plurality of fixing assemblies are evenly installed circumferentially on the movable plate 2 for tightening and fixing the corresponding clamping assemblies.

[0006] The turntable is provided with a connecting assembly for connecting and locking the movable plate 2, the interior of the turntable is provided with a driving assembly for driving a plurality of clamping assemblies to clamp the shaft simultaneously and drive the movable plate 2 to move downward, and a limiting assembly is provided at the bottom of the movable plate 2.

[0007] In one possible implementation, the clamping assembly includes a plurality of slides slidably installed on the top of the turntable along the radial direction of the placement hole and evenly distributed along the circumference of the corresponding placement hole, a movable block is slidably installed on the side of the slide close to the center of the corresponding placement hole, a clamping block is fixedly connected to the side of the movable block close to the center of the placement hole, a return spring is fixedly connected between the end of the movable block away from the center of the corresponding placement hole and the inner wall of the slide, a round rod is fixedly connected to the bottom of the slide, a rotating disk located below the slide and coaxial with the placement hole is rotatably installed inside the turntable, a plurality of arc grooves evenly distributed circumferentially are opened on the rotating disk, and the round rod is slidably installed in the corresponding arc groove.

[0008] In one possible implementation, the fixing assembly includes a circular ring fixedly mounted on movable plate 2 and coaxial with the placement hole, a plurality of wedge-shaped push blocks evenly arranged circumferentially and sliding along the radial direction are mounted on the inner ring wall of the circular ring, a return spring 2 is fixedly connected between the end of the wedge-shaped push block away from the center of the circular ring and the inner wall of the circular ring, and a locking component corresponding to the wedge-shaped push block one by one and used to lock the wedge-shaped push block is mounted on the bottom of the circular ring.

[0009] In one possible implementation, the locking component includes a hollow shell fixedly connected to the bottom of the ring, a locking rod is slidably installed inside the hollow shell, a baffle is fixedly connected to the locking rod, a return spring three is fixedly connected between the top of the baffle and the bottom of the ring and is sleeved on the outside of the locking rod, and a plurality of locking holes equidistantly distributed along its length are provided at the bottom of the wedge-shaped push block, after the top end of the locking rod slides through the inside of the ring and is plugged into the corresponding locking hole, the bottom end slides through to the bottom of the hollow shell.

[0010] In one possible implementation, the connection assembly includes a plurality of wedge-shaped plugs mounted on the outer ring wall of the movable plate 2 and arranged evenly in the circumferential direction and sliding in the radial direction thereof; a return spring 4 is fixedly connected between one end of the wedge-shaped plugs close to the center of the movable plate 2 and the inner wall of the movable plate 2; a plurality of connection frames corresponding to the wedge-shaped plugs are mounted on the top of the turntable and slidingly mounted in the radial direction thereof; a moving component for driving the connection frames to slide and separate from the wedge-shaped plugs is also mounted on the turntable.

[0011] In one possible implementation, the movable component includes a rotating ring rotatably mounted on the outer ring wall of the turntable, the rotating ring is provided with a plurality of arc grooves 2 evenly distributed circumferentially, the bottom of the connecting frame is fixedly connected to a round rod 2, the bottom end of the round rod 2 is slidably connected to the arc groove 2, the front side of the rotating ring is fixedly connected to a turning handle, and the turning handle is connected and locked to the turntable by a threaded fixing bolt.

[0012] In one possible implementation, the drive assembly includes a drive motor fixedly mounted inside a turntable, a drive disk having a U-shaped cross-section is fixedly connected to the top of the drive motor output shaft, the outer ring surface of the drive disk is a half gear structure, and the inner ring surface is a full gear structure, a gear ring coaxial with the turntable is rotatably mounted inside, several of the rotating disks are meshed with the outer ring surfaces of the gear rings, the outer ring surface of the drive disk is meshed with the inner ring surface of the gear ring, and the drive disk and the gear ring are not coaxial.

[0013] In one possible implementation, the drive assembly also includes a movable sleeve fixedly connected to the bottom of the movable plate 2, the movable sleeve is slidably installed on the top of the turntable, a lead screw located below the movable plate 2 is rotatably installed on the turntable, the top end of the lead screw is threadedly connected to the movable sleeve, and the bottom end of the lead screw is coaxially fixedly connected with a transmission gear, the transmission gear is meshed with the inner ring surface of the drive disk, and the transmission gear is coaxial with the gear ring.

[0014] In one possible implementation, the limit assembly includes a limit frame fixedly connected to the bottom of the movable plate 2, the limit frame is a hexagonal star structure formed by two equilateral triangles overlapping and staggered, the top of the slide seat is fixedly connected to a limit column, and the outer wall of the limit column conflicts with the inner side of the corresponding end angle of the limit frame.

[0015] In one possible implementation, the depth adjustment mechanism includes a fixed shaft fixedly connected to the inside of the turntable and located outside the placement hole, and a rotation lock portion, a rotation rod is rotatably mounted on the fixed shaft, and the end of the rotation rod close to the placement hole is fixedly connected to a step platform located at the bottom of the placement hole; the rotation lock portion is used to control the rotation of the step platform to switch the step surface of the supporting shaft, the rotation lock portion includes an active groove provided on the turntable for horizontal deflection of the rotation rod, the step platform is movably mounted on the inner side of the active groove, and the end of the rotation rod away from the placement hole is extended to the outside of the turntable and is provided with a pair of A positioning component for limiting the rotation angle of the rotating rod, the positioning component includes a movable plate one that is slidably installed inside the rotating rod up and down, the top of the movable plate one is integrally formed with a protrusion, the top of the protrusion slides through the top of the rotating rod, a compression spring is fixedly connected between the bottom of the movable plate one and the inner wall of the rotating rod, the top of the movable plate one is fixedly connected with a positioning column, and the turntable is provided with a plurality of positioning holes that correspond to and are connected to the left end, middle part and right end of the movable groove, and the top of the positioning column slides through the top of the rotating rod and then engages with the corresponding positioning hole.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention can fix a plurality of shafts of different diameters at the same time through the linkage cooperation of the clamping assembly, the movable plate 2, the fixing assembly, the connecting assembly and the driving assembly. At the same time, the driving assembly drives the movable plate 2 to move downward. When the clamping assembly clamps the shaft, the fixing assembly on the movable plate 2 performs secondary locking on the clamping assembly to improve the fixing stability of the shaft. At the same time, the connecting assembly connects and locks the movable plate 2 with the turntable to ensure the stable position of the movable plate 2, further improving the firmness of the fixing assembly locking the clamping assembly.

[0017] 2. The present invention adjusts the placement depth of the placement hole by setting a depth adjustment mechanism, and adjusts the step surfaces of different heights of the step platform to the bottom of the placement hole, so that the placement hole has different depths, and then adjusts the length of the shaft exposed through the placement hole according to the length of the shaft. On the basis of ensuring that the exposed length reaches the required length for processing, avoid the exposed length being too long or too short, thereby ensuring the stability and processing quality of the shaft processing.

[0018] 3. The present invention sets the linkage cooperation of the clamping assembly, the second movable plate, the fixed assembly and the limit assembly. When the second movable plate drives the fixed assembly to move downward to fix the clamping block, the limit assembly can fix the slide to prevent the slide from loosening, thereby further improving the firmness of the clamping assembly to fix the shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2 It is a front cross-sectional view of the turntable of the present invention.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the clamping assembly and the limiting assembly of the present invention.

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the driving component of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the movable plate 2 of the present invention.

[0024] Figure 6 It is a partial cross-sectional view of the slide seat of the present invention.

[0025] Figure 7 It is a partial cross-sectional view of the ring of the present invention.

[0026] Figure 8 It is a three-dimensional structural schematic diagram of the moving part of the present invention.

[0027] Fig. 9 It is a partial cross-sectional view of the rotating rod of the present invention.

[0028] In the figure: 1. multi-station processing table; 2. turntable; 3. placement hole; 4. depth adjustment mechanism; 41. fixed shaft; 42. rotating rod; 43. step platform; 44. positioning assembly; 441. movable plate 1; 442. compression spring; 443. positioning column; 444. positioning hole; 5. fixing mechanism; 51. clamping assembly; 511. slide seat; 512. movable block; 513. clamping block; 514. reset spring 1; 515. round rod 1; 516. rotating disk; 5161. arc groove 1; 52. movable plate 2; 53. fixing assembly; 531. circular ring; 532. wedge-shaped push block; 533. reset spring 2; 534. locking component; 5341. hollow shell; 5342. locking rod; 5343. baffle; 5344. reset spring three; 5345. locking hole; 54. connecting assembly; 541. wedge-shaped plug; 542. reset spring four; 543. connecting frame; 544. moving part; 5441. rotating ring; 5442. arc groove two; 5443. round rod two; 5444. turning handle; 5445. fixing bolt; 55. driving assembly; 551. driving motor; 552. driving disk; 553. gear ring; 554. movable sleeve; 555. lead screw; 556. transmission gear; 56. limiting assembly; 561. limiting frame; 562. limiting column. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] See also Figure 1 , Figure 2 and Figure 3 A multi-station machining equipment for turning shaft parts includes a multi-station machining table 1 and a turntable 2 rotatably mounted on the multi-station machining table 1. A plurality of placement holes 3 evenly distributed in the circumferential direction are opened on the top of the turntable 2. The number of the placement holes 3 is six. A depth adjustment mechanism 4 corresponding to the placement holes 3 and located below the placement holes 3 is installed on the turntable 2, as well as a fixing mechanism 5 for fixing the shaft. The depth adjustment mechanism 4 is used to adjust the insertion depth of the shaft in the placement hole 3 according to the length of the shaft.

[0031] See also Figure 1 , Figure 2 and Figure 3The fixing mechanism 5 includes a clamping assembly 51 installed on the turntable 2 and corresponding to the placement holes 3 one by one and used for circumferentially elastically clamping the shaft member in the placement hole 3. A movable plate 2 52 is movably installed on the top of the turntable 2, and a plurality of fixing assemblies 53 are evenly installed circumferentially on the movable plate 52 for tightly fixing the corresponding clamping assembly 51.

[0032] See also Figure 2 , Figure 3 and Figure 4 A connecting component 54 is installed on the turntable 2 to connect and lock the movable plate 2. A driving component 55 is installed inside the turntable 2 to drive several clamping components 51 to clamp the shaft at the same time and drive the movable plate 2 52 to move downward. A limiting component 56 is installed at the bottom of the movable plate 2.

[0033] See also Figure 2 , Figure 3 , Figure 4 and Figure 6 The clamping assembly 51 includes a plurality of slides 511 which are slidably installed on the top of the turntable 2 along the radial direction of the placement hole 3 and are evenly distributed along the circumference of the corresponding placement hole 3. A movable block 512 is slidably installed on the side of the slide 511 close to the center of the corresponding placement hole 3. A clamping block 513 is fixedly connected to the side of the movable block 512 close to the center of the placement hole 3. A return spring 514 is fixedly connected between the end of the movable block 512 away from the center of the corresponding placement hole 3 and the inner wall of the slide 511. A round rod 515 is fixedly connected to the bottom of the slide 511. A rotating disk 516 which is located below the slide 511 and is coaxial with the placement hole 3 is rotatably installed inside the turntable 2. A plurality of arc grooves 5161 evenly distributed along the circumference are opened on the rotating disk 516. The arc groove 5161 is not coaxial with the rotating disk 516. The round rod 515 is slidably installed in the corresponding arc groove 5161.

[0034] When processing the shaft, shafts of different diameters are placed in different placement holes 3 respectively, and then the multiple rotating disks 516 are driven to rotate simultaneously through the driving assembly 55, and the arc groove 5161 is used to drive the round rod 515 to move toward the center of the corresponding placement hole 3, and then the round rod 515 drives the slide 511 to move toward the center of the corresponding placement hole 3, and the slide 511 slides along the radial direction of the placement hole 3 to clamp the clamping block 513 on the outer wall of the shaft. At this time, the reset spring 514 will be compressed. By compressing the reset spring 514 to different lengths, shafts of different diameters can be clamped and fixed adaptively.

[0035] See also Figure 2 , Figure 5 and Figure 7The fixing assembly 53 includes a circular ring 531 fixedly mounted on the movable plate 52 and coaxial with the placement hole 3, a plurality of wedge-shaped push blocks 532 evenly arranged circumferentially and sliding along its radial direction are mounted on the inner ring wall of the circular ring 531, a return spring 533 is fixedly connected between the end of the wedge-shaped push block 532 away from the center of the circular ring 531 and the inner wall of the circular ring 531, and a locking component 534 corresponding to the wedge-shaped push block 532 and used to lock the wedge-shaped push block 532 is mounted at the bottom of the circular ring 531.

[0036] See also Figure 2 , Figure 5 and Figure 7 The locking component 534 includes a hollow shell 5341 fixedly connected to the bottom of the ring 531, a locking rod 5342 is slidably installed in the interior of the hollow shell 5341, a blocking piece 5343 is fixedly connected to the locking rod 5342, the blocking piece 5343 is slidably installed in the interior of the hollow shell 5341, a return spring 5344 sleeved on the outside of the locking rod 5342 is fixedly connected between the top of the blocking piece 5343 and the bottom of the ring 531, and a plurality of locking holes 5345 equidistantly distributed along the length direction of the wedge-shaped push block 532 are provided at the bottom. After the top end of the locking rod 5342 slides through the interior of the ring 531, it is plugged into the corresponding locking hole 5345 and the bottom end slides through to the bottom of the hollow shell 5341.

[0037] See also Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 When the clamping block 513 clamps the shaft, the driving assembly 55 drives the movable plate 2 52 to move downward. After the clamping block 513 completely clamps the shaft, the movable plate 2 52 drives the fixed assembly 53 to move down to the top of the clamping block 513. Then the driving assembly 55 continues to drive the movable plate 2 52 to move downward, so that the inclined surface of the wedge-shaped push block 532 conflicts with the top of the corresponding clamping block 513. At this time, the wedge-shaped push block 532 will move away from the center of the corresponding placement hole 3 under the push of the clamping block 513, so that the reset spring 2 533 is compressed until the wedge-shaped push block 532 is completely moved to the clamping block 513. On the outside, the rebound force of the return spring 533 is used to push the wedge-shaped push block 532 against the outside of the clamping block 513. At this time, the bottom end of the locking rod 5342 contacts the top of the slide seat 511, and then as the ring 531 continues to move downward, the wedge-shaped push block 532 no longer moves radially, and the locking rod 5342 will move upward corresponding to the hollow shell 5341, so that the top end of the locking rod 5342 is inserted into the corresponding locking hole 5345, locking the wedge-shaped push block 532 and the ring 531 together, and using the wedge-shaped push block 532 to fix the clamping block 513, thereby improving the firmness of the clamping block 513 to fix the shaft.

[0038] See also Figure 1 , Figure 2 , Figure 3 and Figure 8 The connecting assembly 54 includes a plurality of wedge-shaped plugs 541 mounted on the outer ring wall of the movable plate 2 52 and arranged evenly in the circumference and sliding along its radial direction. A return spring 4 542 is fixedly connected between one end of the wedge-shaped plug 541 close to the center of the movable plate 2 52 and the inner wall of the movable plate 2 52. A plurality of connecting frames 543 corresponding to the wedge-shaped plugs 541 are mounted on the top of the turntable 2 and slidingly mounted along its radial direction. A moving component 544 is also mounted on the turntable 2 to drive the connecting frames 543 to slide and separate from the wedge-shaped plugs 541.

[0039] See also Figure 1 , Figure 2 , Figure 3 and Figure 8 The moving component 544 includes a rotating ring 5441 rotatably mounted on the outer ring wall of the turntable 2, and a plurality of arc grooves 5442 evenly distributed in the circumferential direction are provided on the rotating ring 5441. A round rod 5443 is fixedly connected to the bottom of the connecting frame 543, and the bottom end of the round rod 5443 is slidably connected to the arc groove 5442. A turning handle 5444 is fixedly connected to the front side of the rotating ring 5441, and the turning handle 5444 is connected and locked to the turntable 2 by a threaded fixing bolt 5445.

[0040] When the movable plate 2 52 moves downward, the movable plate 2 52 will drive the wedge-shaped plug 541 to move downward together. When the connecting frame 543 conflicts with the inclined surface of the wedge-shaped plug 541, the connecting frame 543 is used to push the wedge-shaped plug 541 to move toward the inside of the movable plate 2 52. At this time, the return spring four 542 will be compressed. When the movable plate 2 52 moves down to the same height as the connecting frame 543, the wedge-shaped plug 541 is just aligned with the frame of the connecting frame 543. The resilience of the return spring four 542 is used to push the return spring four 542 to slide to the outside of the movable plate 2 52, so that the wedge-shaped plug 541 is plugged into the connecting frame 543, locking the movable plate 2 52 and the turntable 2 together, and then connecting the locking handle 5444 and the turntable 2 by the fixing bolt 5445, preventing the movable plate 2 from moving upward, thereby improving the firmness of the fixing assembly 53 to the clamping assembly 51.

[0041] When the lock between the movable plate 2 52 and the turntable 2 is to be released, the fixing bolt 5445 is first loosened, and then the turning handle 5444 is turned counterclockwise to drive the rotating ring 5441 to rotate counterclockwise through the turning handle 5444, and the arc groove 2 5442 is used to drive the round rod 2 5443 and the connecting frame 543 to move away from the center of the turntable 2, so that the connecting frame 543 is separated from the wedge-shaped plug 541, thereby releasing the lock on the movable plate 2 52.

[0042] See also Figure 1, Figure 2 and Figure 4 The driving assembly 55 includes a driving motor 551 fixedly installed inside the turntable 2, and a driving disk 552 with a U-shaped cross-section is fixedly connected to the top of the output shaft of the driving motor 551. The outer ring surface of the driving disk 552 is a half-gear structure and the inner ring surface is a full-gear structure. A gear ring 553 coaxial with the turntable 2 is rotatably installed inside the turntable 2, and a plurality of rotating disks 516 are meshed with the outer ring surfaces of the gear ring 553, and the outer ring surface of the driving disk 552 is meshed with the inner ring surface of the gear ring 553, and the driving disk 552 and the gear ring 553 are not coaxial.

[0043] See also Figure 1 , Figure 2 and Figure 4 The driving assembly 55 also includes a movable sleeve 554 fixedly connected to the bottom of the movable plate 2, and the movable sleeve 554 is slidably installed on the top of the turntable 2. A lead screw 555 located below the movable plate 2 is rotatably installed on the turntable 2. The top of the lead screw 555 is threadedly connected to the movable sleeve 554, and the bottom end of the lead screw 555 is coaxially fixedly connected with a transmission gear 556. The transmission gear 556 is meshed with the inner ring surface of the driving disk 552, and the transmission gear 556 is coaxial with the ring gear 553.

[0044] See also Figure 1-Figure 6 , the driving motor 551 drives the driving disk 552 to rotate. In the initial state, the half gear on the outer ring wall of the driving disk 552 is meshed with the ring gear 553, and the outer ring wall of the driving disk 552 is used to drive the ring gear 553 to rotate a certain angle. During this period, the ring gear 553 simultaneously drives multiple rotating disks 516 to rotate together, so that the clamping assembly 51 locks multiple shafts with different diameters. At the same time, the inner ring wall of the driving disk 552 drives the transmission gear 556 to rotate, and then the transmission gear 556 drives the lead screw 555 to rotate, so that the movable sleeve 554 drives the movable plate 2 52 to move downward. When the end of the wedge-shaped push block 532 conflicts with the outer side of the clamping block 513 and the limiting assembly 56 begins to limit the slide seat 511, the outer ring wall of the driving disk 552 is no longer meshed with the ring gear 553. At this time, the movable sleeve 554 drives the lead screw 555 and the movable plate 2 52 to continue to move downward, so that the locking component 534 completes the locking of the wedge-shaped push block 532.

[0045] See also Figure 1 , Figure 2 , Figure 3 and Figure 5 The limit assembly 56 includes a limit frame 561 fixedly connected to the bottom of the movable plate 52. The limit frame 561 is a hexagonal star structure composed of two equilateral triangles staggered and overlapped. The top of the slide seat 511 is fixedly connected to the limit column 562. The outer wall of the limit column 562 conflicts with the inner side of the corresponding end angle of the limit frame 561.

[0046] When the movable plate 2 52 moves downward, it will drive the limit frame 561 to move toward each other. When the end of the wedge-shaped push block 532 contacts the outside of the clamping block 513, the lower end of the limit frame 561 moves downward to a position equal to the top of the limit column 562. Then, as the movable plate 2 52 moves downward, the limit frame 561 contacts the outer wall of the limit column 562. The limit frame 561 is used to block and limit the limit column 562, preventing the slide 511 from deviating in the direction away from the center of the corresponding placement hole 3, and maintaining the stability between the slide 511 and the clamping block 513. Figure 3 As shown, one placement hole 3 corresponds to an end angle of the limiting frame 561 of the hexagonal star structure, and the three limiting columns 562 at the placement hole 3 simultaneously abut against the inner side of the end angle.

[0047] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 and Fig. 9 The depth adjustment mechanism 4 includes a fixed shaft 41 fixedly connected to the inside of the turntable 2 and located outside the placement hole 3, and a rotation lock portion, a rotation rod 42 is rotatably installed on the fixed shaft 41, and the end of the rotation rod 42 close to the placement hole 3 is fixedly connected to a step platform 43 located at the bottom of the placement hole 3, and the step platform 43 is arc-shaped as a whole; the rotation lock portion is used to control the rotation of the step platform 43 to switch the step surface of the supporting shaft member, and the rotation lock portion includes an active groove for horizontal deflection of the rotation rod 42 opened on the turntable 2, and the step platform 43 is movably installed on the inner side of the active groove, and the end of the rotation rod 42 away from the placement hole 3 extends to the outside of the turntable 2, and a rotation control mechanism for the rotation rod 42 is provided. A positioning assembly 44 for limiting the movable angle, the positioning assembly 44 includes a movable plate 441 which is slidably installed up and down inside the rotating rod 42, the top of the movable plate 441 is integrally formed with a protrusion, the top of the protrusion slides through the top of the rotating rod 42, a compression spring 442 is fixedly connected between the bottom of the movable plate 441 and the inner wall of the rotating rod 42, the top of the movable plate 441 is fixedly connected with a positioning column 443, and a plurality of positioning holes 444 corresponding to and connected with the left end, middle part and right end of the movable groove are opened on the turntable 2, the top of the positioning column 443 slides through the top of the rotating rod 42 and then plugs into the corresponding positioning hole 444.

[0048] When placing the longer shaft into the placement hole 3, first press the convex block on the movable plate 441, so that the movable plate 441 drives the positioning column 443 to move downward and retract into the rotating rod 42, release the lock between the positioning column 443 and the positioning hole 444, and then rotate the rotating rod 42 to move the lower step surface on the step platform 43 to the bottom of the placement hole 3. In this way, when the longer shaft is placed in the placement hole 3, the top of the longer shaft will not be exposed too long, but the exposed length is sufficient for subsequent processing, thereby ensuring the stability of the shaft during processing. On the contrary, when the longer shaft is placed in the placement hole 3, the top of the longer shaft will not be exposed too long, but the exposed length is sufficient for subsequent processing, thereby ensuring the stability of the shaft during processing. When the short shaft is placed in the placement hole 3, the rotating rod 42 is rotated to move the higher step surface on the step platform 43 to the bottom of the placement hole 3, and the higher step surface is used to support the shorter shaft to ensure that the top of the shorter shaft can be exposed for sufficient length for processing. After the adjustment is completed, the pressure on the protrusion is released. At this time, the rebound force of the compression spring 442 is used to push the movable plate 441 and the positioning column 443 upward, so that the positioning column 443 is inserted into the corresponding positioning hole 444, and the rotating rod 42 is limited again to prevent the rotating rod 42 from moving at will.

[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-station machining equipment for turning shaft parts, comprising a multi-station machining table and a turntable rotatably mounted on the multi-station machining table, characterized in that: The top of the turntable is provided with a plurality of placement holes evenly distributed in the circumferential direction, and a fixing mechanism for fixing shafts of different diameters is provided on the turntable; The fixing mechanism includes a clamping assembly mounted on the turntable corresponding to the placement holes one by one and used for pre-circumferentially elastically clamping the shaft in the placement holes, a movable plate 2 is movably mounted on the top of the turntable, and a plurality of fixing assemblies are evenly mounted on the movable plate 2 to tightly fix the corresponding clamping assemblies; The turntable is provided with a connecting assembly for connecting and locking the movable plate 2, the turntable is provided with a driving assembly for driving a plurality of clamping assemblies to clamp the shaft at the same time and drive the movable plate 2 to move downward, and the bottom of the movable plate 2 is provided with a limiting assembly; A depth adjustment mechanism is arranged on the turntable, the depth adjustment mechanism corresponds to the placement hole one by one and is located below the placement hole, and the depth adjustment mechanism is used to adjust the placement depth of the shaft member in the placement hole according to the length of the shaft member; The depth adjustment mechanism includes a step platform and a rotation lock portion for controlling the rotation of the step platform to switch the step surface of the supporting shaft member; The clamping assembly includes a plurality of slides slidably mounted on the top of the turntable along the radial direction of the placement hole and evenly distributed along the circumference of the corresponding placement hole, a movable block is slidably mounted on one side of the slide close to the center of the corresponding placement hole, and a clamping block is fixedly connected to one side of the movable block close to the center of the placement hole; The fixing assembly comprises a circular ring fixedly mounted on the second movable plate and coaxial with the placement hole, a plurality of wedge-shaped push blocks evenly arranged in the circumferential direction and sliding in the radial direction are mounted on the inner ring wall of the circular ring, a second return spring is fixedly connected between the end of the wedge-shaped push block away from the center of the circular ring and the inner wall of the circular ring, and a locking component corresponding to the wedge-shaped push block and used to lock the wedge-shaped push block is mounted at the bottom of the circular ring; The locking component includes a hollow shell fixedly connected to the bottom of the ring, a locking rod is slidably installed inside the hollow shell, and a plurality of locking holes equidistantly distributed along its length are provided at the bottom of the wedge-shaped push block. The top end of the locking rod slides through the inside of the ring and is plugged into the corresponding locking hole, and the bottom end slides through the bottom of the hollow shell.

2. The multi-station turning processing equipment for shaft parts according to claim 1 is characterized in that: A return spring is fixedly connected between the end of the movable block away from the center of the corresponding placement hole and the inner wall of the slide seat, a round rod is fixedly connected to the bottom of the slide seat, a rotating disk located below the slide seat and coaxial with the placement hole is rotatably installed inside the turntable, a plurality of arc grooves evenly distributed in the circumference are opened on the rotating disk, and the round rod is slidably installed in the corresponding arc groove.

3. The multi-station turning processing equipment for shaft parts according to claim 1 is characterized in that: A blocking piece is fixedly connected to the locking rod, and a return spring three sleeved on the outside of the locking rod is fixedly connected between the top of the blocking piece and the bottom of the ring.

4. The multi-station turning processing equipment for shaft parts according to claim 1 is characterized in that: The connecting assembly includes a plurality of wedge-shaped plugs mounted on the outer ring wall of the movable plate 2, which are evenly arranged in the circumferential direction and slide in the radial direction thereof; a return spring 4 is fixedly connected between one end of the wedge-shaped plug close to the center of the movable plate 2 and the inner wall of the movable plate 2; a plurality of connecting frames corresponding to the wedge-shaped plugs are mounted on the top of the turntable, which slide in the radial direction thereof; a moving component for driving the connecting frames to slide and separate from the wedge-shaped plugs is also mounted on the turntable.

5. The multi-station turning processing equipment for shaft parts according to claim 4 is characterized in that: The movable component includes a rotating ring rotatably mounted on the outer ring wall of the turntable, the rotating ring is provided with a plurality of arc grooves 2 evenly distributed in the circumferential direction, the bottom of the connecting frame is fixedly connected to a round rod 2, the bottom end of the round rod 2 is slidably connected to the arc groove 2, the front side of the rotating ring is fixedly connected to a turning handle, and the turning handle is connected and locked to the turntable by a threaded fixing bolt.

6. The multi-station turning processing equipment for shaft parts according to claim 2 is characterized in that: The driving assembly includes a driving motor fixedly installed inside the turntable, a driving disk with a U-shaped cross-section is fixedly connected to the top of the driving motor output shaft, the outer ring surface of the driving disk is a half gear structure, and the inner ring surface is a full gear structure, and a gear ring coaxial with the turntable is rotatably installed inside, several of the rotating disks are meshed with the outer ring surfaces of the gear rings, the outer ring surface of the driving disk is meshed with the inner ring surface of the gear ring, and the driving disk and the gear ring are not coaxial.

7. The multi-station turning processing equipment for shaft parts according to claim 6 is characterized in that: The driving assembly also includes a movable sleeve fixedly connected to the bottom of the movable plate 2, the movable sleeve is slidably installed on the top of the turntable, a lead screw located below the movable plate 2 is rotatably installed on the turntable, the top of the lead screw is threadedly connected to the movable sleeve, and the bottom end of the lead screw is coaxially fixedly connected with a transmission gear, the transmission gear is meshed with the inner ring surface of the driving disk, and the transmission gear is coaxial with the gear ring.

8. The multi-station turning processing equipment for shaft parts according to claim 2 is characterized in that: The limit assembly includes a limit frame fixedly connected to the bottom of the second movable plate, the limit frame is a hexagonal star structure composed of two equilateral triangles staggered and overlapped, the top of the slide seat is fixedly connected to a limit column, and the outer wall of the limit column conflicts with the inner side of the corresponding end angle of the limit frame.

9. The multi-station turning processing equipment for shaft parts according to claim 1 is characterized in that: The depth adjustment mechanism also includes a fixed shaft fixedly connected to the inside of the turntable and located outside the placement hole, a rotating rod is rotatably mounted on the fixed shaft, and one end of the rotating rod close to the placement hole is fixedly connected to a stepped platform located at the bottom of the placement hole.

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