Camshaft processing lathe and camshaft processing technology

Abstract

The present invention relates to the technical field of machining lathes, and discloses a camshaft machining lathe and a camshaft machining process. Through the arrangement of a positioning component and a driving component, when a portion of a long shaft to be machined is turned into a camshaft, the portion of the long shaft to be cut into the camshaft is divided into several small sections by the positioning component, so that a feed mechanism controls a turning tool to turn these small sections in sequence, and the completed camshaft is turned out, thereby preventing the portion of the long shaft that is turned into the camshaft from being deformed during the machining process, thereby improving the accuracy of the camshaft. When it is necessary to move the positioning component, it is only necessary to release the clamping of the long shaft by the positioning clamp, and then the positioning component can be driven to move on the guide rail by the driving component. When passing through the feed mechanism, it is only necessary to turn the support plate outside the guide rail, and there is no need to remove the positioning component from the guide rail, thereby reducing the workload of workers and improving the production efficiency of the camshaft.

Description

Technical Field

[0001] The present invention relates to the technical field of machining lathes, in particular to a camshaft machining lathe and a camshaft machining process. Background Art

[0002] The camshaft is one of the core components of the engine. Its core function is to control the opening and closing timing and lift of the valves through rotational motion, ensuring that valve movement is synchronized with piston movement during the engine's four strokes: intake, compression, power, and exhaust. During the camshaft production process, the long shaft is radially turned on a lathe to form the camshaft.

[0003] Chinese patent CN201997713U discloses a lathe with an auxiliary bracket for machining camshafts. The lathe provides a self-centering auxiliary bracket for camshaft turning. During machining, the auxiliary bracket is placed on a lathe guide rail, moved along the lathe guide rail, selected and placed in an appropriate position, and the bracket seat is locked. The workpiece is placed on the lathe, the self-centering center frame is closed, and then the camshaft is machined. This can effectively reduce the stress deformation during camshaft machining and meet the external conditions required for machining accuracy. However, in the prior art, when replacing the position of the self-centering center frame, it is necessary to remove the centering center frame from one side of the auxiliary bracket by removing the bolts, and then install the self-centering center frame on the other side of the auxiliary bracket by bolts. When machining camshafts in large quantities, this step will be very cumbersome, not only increasing the workload of workers, but also reducing the production efficiency of the camshafts. In addition, strip-shaped chips will be generated during turning, and some of the strip-shaped chips will hang on the lathe guide rails, requiring workers to manually clean them from time to time, causing inconvenience to the workers' turning work. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a camshaft machining lathe and a camshaft machining process to overcome the above-mentioned technical problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a camshaft processing lathe and a camshaft processing process, comprising a machine tool and a guide rail installed on the machine tool, the machine tool is provided with a feeding mechanism, a positioning assembly, a driving assembly and a cleaning assembly, the upper side of the feeding mechanism is equipped with a turning tool, the lower side of the feeding mechanism is installed on the upper end of the guide rail, the feeding mechanism can drive the turning tool to move on the guide rail to turn the camshaft on the machine tool, the positioning assembly comprises a bearing plate, a support plate and a movable ring, the bearing plate is installed on the guide rail and is located below the feeding mechanism, the bearing plate is connected to the lower end of the support plate, and the upper end of the support plate is provided with a fixing ring. The movable ring is installed in the fixed ring, and a number of positioning clamps are evenly distributed on the movable ring. The positioning clamps are used to clamp the camshaft to be processed, and when the camshaft is turned, the movable ring can rotate in the fixed ring driven by the camshaft. The driving assembly is installed on the carrier plate and is used to drive the carrier plate to perform linear motion on the guide rail. The cleaning assembly includes a connecting rod and a clapper. The clapper is connected to one end of the connecting rod, and the other end of the connecting rod is inserted into the carrier plate from the end of the carrier plate, and the connecting rod cooperates with the driving assembly. When the driving assembly drives the carrier plate to move, it can drive the connecting rod to drive the clapper to rotate.

[0006] Preferably, there are two guide rails symmetrically distributed on the machine tool, and the two ends of the two guide rails are fixedly connected to the two ends of the machine tool respectively. A sliding groove is provided on each guide rail, and the sliding groove runs through the guide rail, wherein a driving rack is fixedly installed on the guide rail away from the feed mechanism, and the driving rack is located at the top of the sliding groove.

[0007] Preferably, both sides of the supporting plate are slidably installed in one of the sliding grooves and extend out of the sliding groove. A connecting column is fixedly installed on the upper side of the supporting plate close to the feeding mechanism. The connecting column is higher than the guide rail. A drive box is fixedly installed on the supporting plate. The drive box is located between the two guide rails, and there is a gap between the top of the drive box and the top of the guide rail.

[0008] The top end face of said sliding arm is fixedly provided with a toothed connecting strip which is cooperatively connected with said toothed connecting strip.

[0009] Preferably, the positioning clip is arc-shaped, and the positioning clip is fixedly connected to a locking rod on one side facing the mounting sleeve, and limiting blocks are fixedly connected on both sides of the locking rod. The upper end of the locking rod passes through the limiting groove and extends into the mounting sleeve, and the limiting block fits into the limiting groove, so that the locking rod cannot rotate. The upper end of the locking rod is rotatably connected to the lower end of the locking bolt, and the locking bolt is threadedly transferred to the mounting sleeve, and the upper end of the locking bolt extends from the mounting sleeve.

[0010] Preferably, the drive assembly includes a drive rod and a transmission rod, the drive rod is rotatably mounted on the bottom of the drive box, and the end of the drive rod away from the feed mechanism passes through the carrying plate and extends outward, the drive rod is coaxially fixedly connected with a handwheel, a drive gear and a worm in sequence, the handwheel is located on the protruding end of the drive rod, the drive gear is located outside the drive box, the drive gear is meshed with the drive rack, the worm is located inside the drive box, the two transmission rods are rotatably mounted in the drive box, located above the drive rod, the two transmission rods are coaxially fixedly connected with a transmission gear, the two transmission gears mesh with each other, and the transmission rod close to the drive gear is also coaxially fixedly connected with a worm wheel, and the worm wheel meshes with the worm wheel.

[0011] Preferably, there are four connecting rods, which are distributed in pairs at both ends of the driving box. The two connecting rods at each end of the driving box are respectively located on both sides of the driving box facing the guide rail, and the two connecting rods on one end of the driving box are located between the other two connecting rods. A driven gear is coaxially fixedly connected to one end of the connecting rod located in the driving box, and the driven gears on the two adjacent connecting rods are meshed with each other, and the driven gears on the two inner connecting rods are also meshed with a nearby transmission gear respectively, and the clapper is fixedly connected to the side of the other end of the connecting rod.

[0012] Preferably, the cleaning assembly also includes a collection trough, which is fixedly mounted on the machine tool and located below the guide rail. One side of the collection trough is an inclined surface, and the other side is a vertical surface. A side door is rotatably mounted on the lower end of the vertical surface of the collection trough.

[0013] Preferably, a chuck and a mounting seat are provided at both ends of the machine tool. The chuck is assembled on the upper end of the machine tool and is located above the guide rail. The bottom of the mounting seat is slidably mounted on the guide rail. The upper end of the mounting seat is equipped with a tail point. The chuck and the tail point correspond to each other and are respectively used to fix the two ends of the camshaft to be processed.

[0014] The present invention also provides a camshaft processing process, which uses a camshaft processing lathe.

[0015] Compared with the prior art, the present invention provides a camshaft machining lathe and a camshaft machining process, which has the following beneficial effects:

[0016] 1. The camshaft processing lathe and the camshaft processing technology, through the arrangement of the positioning component and the drive component, when the part of the long shaft to be processed is turned into the camshaft, the part of the long shaft to be cut into the camshaft is divided into several small sections through the positioning component, so that the feed mechanism controls the turning tool to turn these small sections in sequence, and the completed camshaft is turned out, thereby preventing the part of the long shaft turned into the camshaft from being deformed during the processing, thereby improving the accuracy of the camshaft; when it is necessary to move the positioning component, it is only necessary to release the clamping of the long shaft by the positioning clamp, and then the positioning component can be driven by the drive component to move on the guide rail, and when passing through the feed mechanism, it is only necessary to turn the support plate outside the guide rail, and there is no need to remove the positioning component from the guide rail, thereby reducing the workload of workers and improving the production efficiency of the camshaft.

[0017] 2. The camshaft processing lathe and the camshaft processing technology are used for the camshaft processing. Through the setting of the cleaning component, when the driving component drives the positioning component to move on the guide rail, the connecting rod of the cleaning component rotates under the drive of the transmission rod of the driving component, so that the two connecting rods located at the movement direction end of the carrier plate can drive the clapper plate to rotate toward the side wall of the guide rail, and pull the strip-shaped chips hanging on the guide rail off the side wall of the guide rail, so that the guide rail is cleaned while the positioning component is reset, which provides convenience for the workers' cutting work, thereby further improving the production efficiency of the camshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 Schematic diagram of the internal structure of the fixing ring of the present invention;

[0020] Figure 3 for Figure 2 A local enlarged structural diagram of point A;

[0021] Figure 4 This is a schematic diagram of the inner structure of the guide rail of the present invention;

[0022] Figure 5 It is a schematic side view of the guide rail structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the internal structure of the drive box of the present invention;

[0024] Figure 7 for Figure 6 A schematic diagram of the partially enlarged structure at point B;

[0025] Figure 8 It is a schematic diagram of the planar structure of the positioning component of the present invention.

[0026] In the figure: 1, machine tool; 11, guide rail; 111, sliding groove; 112, driving rack; 12, chuck; 13, mounting seat; 131, tail center; 2, feed mechanism; 21, turning tool; 3, positioning assembly; 31, bearing plate; 311, connecting column; 32, driving box; 33, support plate; 331, rotating shaft; 34, fixed ring; 341, rotating groove; 35, movable ring; 351, sliding block; 352, Limiting groove; 36. Mounting sleeve; 37. Positioning clamp; 38. Locking rod; 381. Limiting block; 39. Locking bolt; 4. Fixing bolt; 5. Driving assembly; 51. Driving rod; 52. Handwheel; 53. Driving gear; 54. Worm; 55. Transmission rod; 56. Transmission gear; 57. Worm gear; 6. Cleaning assembly; 61. Connecting rod; 62. Clapper; 63. Driven gear; 7. Collection trough; 71. Side door. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Embodiment 1;

[0029] See also Figures 1-8 A camshaft processing lathe and a camshaft processing process, comprising a machine tool 1 and a guide rail 11 mounted on the machine tool 1, the machine tool 1 is provided with a feed mechanism 2, a positioning assembly 3, a drive assembly 5 and a cleaning assembly 6, the upper side of the feed mechanism 2 is equipped with a turning tool 21, the lower side of the feed mechanism 2 is mounted on the upper end of the guide rail 11, the feed mechanism 2 can drive the turning tool 21 to move on the guide rail 11, and the camshaft on the turning machine tool, the positioning assembly 3 comprises a bearing plate 31, a support plate 33 and a movable ring 35, the bearing plate 31 is mounted on the guide rail 11, located below the feed mechanism 2, the bearing plate 31 is connected to the lower end of the support plate 33, the upper end of the support plate 33 is provided with a fixed ring 34, and the movable ring 35 is installed In the fixed ring 34, a number of positioning clamps 37 are evenly distributed on the movable ring 35. The positioning clamps 37 are used to clamp the camshaft to be processed, and when the camshaft is turned, the movable ring 35 can rotate in the fixed ring 34 driven by the camshaft. The driving assembly 5 is installed on the carrier plate 31, and is used to drive the carrier plate 31 to perform linear motion on the guide rail 11. The cleaning assembly 6 includes a connecting rod 61 and a clapper 62. The clapper 62 is connected to one end of the connecting rod 61, and the other end of the connecting rod 61 is inserted into the carrier plate 31 from the end of the carrier plate 31, and the connecting rod 61 cooperates with the driving assembly 5. When the driving assembly 5 drives the carrier plate 31 to move, it can drive the connecting rod 61 to drive the clapper 62 to rotate.

[0030] Among them, when in use, first place the long shaft on the machine tool 1, wherein, initially, the feed mechanism 2 and the positioning assembly 3 are parked at one end of the machine tool 1 in sequence, and when the long shaft passes through the fixed ring 34 and the movable rod of the positioning assembly 3, its two ends are respectively connected to the two ends of the machine tool 1. After the long shaft is placed, the driving assembly 5 drives the carrier plate 31 to move a distance toward the other end of the machine tool 1 on the guide rail 11, so that the carrier plate 31 stops at a suitable position, and then drives the positioning clamp 37 on the movable ring 35 to clamp the long shaft, so that the positioning assembly 3 supports the first small section of the long shaft to be turned through the movable ring 35, preventing the first small section of the long shaft to be turned from being deformed during the process of being processed into the camshaft, thereby improving the accuracy of the camshaft. In this process, as the carrier plate 31 is driven, the positioning clamp 37 on the movable ring 35 is driven to clamp the long shaft, so that the positioning assembly 3 supports the first small section of the long shaft to be turned through the movable ring 35, preventing the first small section of the long shaft to be turned from being deformed during the process of being processed into the camshaft, thereby improving the accuracy of the camshaft. As the plate 31 moves, the driving assembly 5 also drives the connecting rod 61 of the cleaning assembly 6 to rotate, so that the clappers 62 on the two connecting rods 61 at the end of the carrying plate 31 in the direction of movement respectively rotate toward the two guide rails 11. The clappers 62 are made of flexible materials such as rubber. When the clappers 62 turn to the guide rail 11, the clappers 62 will clasp on the side wall of the upper end of the guide rail 11 and bend, so that the clappers 62 fit on the side wall of the guide rail 11. As the connecting rod 61 continues to rotate, the clappers 62 stick to the side wall of the guide rail 11 and slide downward, and finally separate from the side wall of the guide rail 11 and restore the deformation, while the two connecting rods 61 at the other end of the carrying plate 31 rotate in the opposite direction with the clappers 62. Then the machine tool 1 rotates the camshaft to be processed, and the feed mechanism 2 uses the turning tool 21 to move the front of the long axis. The small section is turned, and some strip-shaped chips will be hung on the guide rail 11 during the turning process. At the same time, the camshaft to be processed drives the movable ring 35 to rotate on the fixed ring 34 under the fixation of the positioning clamp 37. When the turning of the previous small section of the long shaft is completed, the turning tool 21 stops turning, and the machine tool 1 stops rotating the long shaft. Then, the positioning clamp 37 is released to fix the long shaft, and the driving component 5 drives the carrier plate 31 to continue to move a suitable distance to the other end of the machine tool 1. After the next small section of the long shaft to be cut is exposed, the positioning clamp 37 re-clamps the camshaft. At this time, the machine tool 1 rotates the camshaft again, and the feed mechanism 2 turns the next small section of the long shaft through the turning tool 21. The above steps are repeated, and the long shaft is cut into a cam through the positioning component 3 during the cutting process. The shaft is divided into several small sections, and the turning tool 21 is controlled by the feed mechanism 2 to turn these small sections in turn. After the camshaft is turned out, the positioning clamp 37 is released to fix the camshaft, and the long shaft processed into the camshaft is removed from the machine tool 1. At this time, the support plate 33 is rotated outward from the machine tool 1, so that the support plate 33 lying on the guide rail 11 becomes parallel to the outer side of the guide rail 11, and the carrier plate 31 is driven back by the drive assembly 5 to move toward the initial position, so that the two connecting rods 61 at the end of the movement direction of the carrier plate 31 drive the clapper 62 to rotate. When the clapper 62 hits the side wall of the guide rail 11, the strip-shaped chips hanging on the guide rail 11 are removed, thereby keeping the upper end of the guide rail 11 clean. After the carrier plate 31 moves to the end of the guide rail 11, it stops moving.The feed mechanism 2 is then reset. When it moves above the carrier plate 31, it returns to its starting point. The drive assembly 5 then drives the carrier plate 31 toward the other end of the machine tool 1. After the carrier plate 31 is removed from the bottom of the feed mechanism 2, the support plate 33 is rotated back and placed horizontally on the guide rail 11 again. The next long shaft is then placed on the machine tool and the above steps are repeated for turning. As the carrier plate 31 moves toward the other end of the machine tool 1, the connecting rod 61 at its moving end drives the clapper plate 62 to rotate, cleaning up the strip chips missed during the last cleaning.

[0031] The difference from the above embodiment is that two guide rails 11 are symmetrically distributed on the machine tool 1, and the two ends of the two guide rails 11 are fixedly connected to the two ends of the machine tool 1 respectively. A sliding groove 111 is provided on each guide rail 11, and the sliding groove 111 runs through the guide rail 11. A driving rack 112 is fixedly installed on the guide rail 11 away from the feed mechanism 2, and the driving rack 112 is located at the top of the sliding groove 111.

[0032] The difference from the above embodiment is that the two sides of the supporting plate 31 are respectively slidably installed in a sliding groove 111 and extend out of the sliding groove 111. A connecting column 311 is fixedly installed on the upper side of the supporting plate 31 close to the feed mechanism 2. The connecting column 311 is higher than the guide rail 11. A drive box 32 is fixedly installed on the supporting plate 31. The drive box 32 is located between the two guide rails 11. There is a gap between the top of the drive box 32 and the top of the guide rail 11.

[0033] Among them, the connecting column 311 is higher than the guide rail 11, so that there is a gap between the bottom of the support plate 33 and the top of the guide rail 11, so that the support plate 33 can rotate above the guide rail 11 without touching the guide rail 11, and there is a gap between the top of the drive box 32 and the top of the guide rail 11, so that the supporting plate 31 can move at the bottom of the feed mechanism 2.

[0034] The difference from the above embodiment is that the bottom of one side of the support plate 33 is fixedly connected to the upper end of the rotating shaft 331, the lower end of the rotating shaft 331 is rotatably connected to the end of the supporting plate 31 away from the connecting column 311, the support plate 33 passes over the top of the guide rail 11, the bottom of the other side of the support plate 33 corresponds to the top of the connecting column 311, the other side of the support plate 33 is connected to the connecting column 311 by a fixing bolt 4, and the two sides of the upper end of the support plate 33 are fixedly connected to a fixing ring 34, and there is a gap between the two fixing rings 34 , and the two fixed rings 34 are provided with annular rotation grooves 341 on the side surfaces facing the support plate 33, and the outer side of the movable ring 35 is fixedly connected to a plurality of sliding blocks 351, and the two ends of the sliding block 351 are respectively slidably installed in a rotation groove 341, and the movable ring 35 is provided with a plurality of limiting grooves 352 evenly distributed in a circumference. The limiting grooves 352 run through the inner and outer sides of the movable ring 35, and a mounting sleeve 36 is provided above each limiting groove 352, and the lower end of the mounting sleeve 36 is fixedly connected to the outer side of the movable ring 35.

[0035] When the cam 33 is in the unlocking state, the locking cam 33 is locked and the locking cam 33 is in the unlocking state, so that the cam 33 can be locked.

[0036] The difference from the above embodiment is that the positioning clamp 37 is arc-shaped, and a locking rod 38 is fixedly connected to the side of the positioning clamp 37 facing the mounting sleeve 36. The two sides of the locking rod 38 are fixedly connected to the limiting blocks 381. The upper end of the locking rod 38 passes through the limiting groove 352 and extends into the mounting sleeve 36, and the limiting block 381 fits into the limiting groove 352, so that the locking rod 38 cannot rotate. The upper end of the locking rod 38 is rotatably connected to the lower end of the locking bolt 39, and the locking bolt 39 is threadedly transferred to the mounting sleeve 36, and the upper end of the locking bolt 39 extends from the mounting sleeve 36.

[0037] Among them, when it is necessary to clamp the long axis, the locking bolt 39 is rotated in the reverse direction, and the locking spiral moves toward the bottom of the mounting sleeve 36 with the cooperation of the thread, thereby pushing the positioning clip 37 on the locking rod 38 to contact the long axis. Through the cooperation of several positioning clips 37, the long axis is clamped, so that the support assembly can support the long axis. When it is necessary to release the clamping of the positioning clip 37 on the long axis, the locking bolt 39 is rotated forward, and the locking spiral moves toward the upper end of the mounting sleeve 36 with the cooperation of the thread, thereby pulling the positioning clip 37 on the locking rod 38 away from the long axis and releasing the long axis. Among them, through the cooperation of the limit groove 352 and the limit block 381, the locking rod 38 cannot rotate and can only move linearly along the mounting sleeve 36.

[0038] The difference from the above embodiment is that the driving assembly 5 includes a driving rod 51 and a transmission rod 55, the driving rod 51 is rotatably mounted on the bottom of the driving box 32, and the end of the driving rod 51 away from the feeding mechanism 2 passes through the carrying plate 31 and extends outward, and the driving rod 51 is coaxially fixedly connected with a handwheel 52, a driving gear 53 and a worm 54 in sequence, the handwheel 52 is located on the protruding end of the driving rod 51, the driving gear 53 is located outside the driving box 32, the driving gear 53 is meshed with the driving rack 112, and the worm 54 is located inside the driving box 32, and the two transmission rods 55 are rotatably mounted in the driving box 32, located above the driving rod 51, and the two transmission rods 55 are coaxially fixedly connected with a transmission gear 56, and the two transmission gears 56 are meshed with each other, wherein the transmission rod 55 close to the driving gear 53 is also coaxially fixedly connected with a worm gear 57, and the worm gear 57 is meshed with the worm 54.

[0039] When the carrier plate 31 needs to be driven to move from the starting end to the other end of the machine tool 1, the handwheel 52 is rotated forward so that the driving rod 51 drives the driving gear 53 and the worm 54 to rotate in the same direction. The driving gear 53 drives the carrier plate 31 to move in the sliding groove 111 through the cooperation of the driving rack 112, and the worm 54 drives the worm wheel 57 and the transmission rod 55 on the worm wheel 57 to rotate clockwise. The transmission rod 55 drives the other transmission rod 55 to rotate counterclockwise through the cooperation between the two transmission gears 56. When the carrier plate 31 needs to return, the handwheel 52 is rotated backward so that the driving rod 51 drives the driving gear 53 and the worm 54 to rotate in the same direction. The driving gear 53 drives the carrier plate 31 to move in the sliding groove 111 through the cooperation of the driving rack 112, and the worm 54 drives the worm wheel 57 and the transmission rod 55 on the worm wheel 57 to rotate counterclockwise. The transmission rod 55 drives the other transmission rod 55 to rotate clockwise through the cooperation between the two transmission gears 56.

[0040] The difference from the above embodiment is that there are four connecting rods 61, which are distributed in pairs at both ends of the drive box 32. The two connecting rods 61 at each end of the drive box 32 are respectively located on both sides of the drive box 32 facing the guide rail 11, and the two connecting rods 61 on one end of the drive box 32 are located between the other two connecting rods 61. A driven gear 63 is coaxially fixedly connected to one end of the connecting rod 61 located in the drive box 32. The driven gears 63 on the two adjacent connecting rods 61 are meshed with each other, and the driven gears 63 on the two inner connecting rods 61 are also meshed with a nearby transmission gear 56 respectively. The clapper 62 is fixedly connected to the side of the other end of the connecting rod 61.

[0041] Among them, when the carrier plate 31 moves from the starting end to the other end of the machine tool 1, the two driven gears 63 engaged with the two transmission gears 56 respectively drive the connecting rods 61 thereon to rotate counterclockwise and clockwise respectively, wherein the driven gear 63 close to the worm gear 57 drives the connecting rod 61 thereon to rotate clockwise. At this time, of the two connecting rods 61 on the moving direction end of the carrier plate 31, the connecting rod 61 that cooperates with the clockwise rotating connecting rod 61 will rotate counterclockwise, and the other connecting rod 61 will be driven by the counterclockwise rotating connecting rod When the supporting plate 31 returns, the two driven gears 63 respectively meshing with the two transmission gears 56 drive the connecting rods 61 thereon to rotate clockwise and counterclockwise respectively, among which the driven gear 63 close to the worm gear 57 drives the connecting rod 61 thereon to rotate counterclockwise. At this time, of the two connecting rods 61 on the end of the supporting plate 31 opposite to the movement direction, the connecting rod 61 that cooperates with the counterclockwise rotating connecting rod 61 will rotate clockwise, while the other connecting rod 61 will rotate counterclockwise under the drive of the clockwise rotating connecting rod.

[0042] The difference from the above embodiment is that the cleaning assembly 6 also includes a collection trough 7, which is fixedly mounted on the machine tool 1 and located below the guide rail 11. One side of the collection trough 7 is an inclined surface, and the other side is a vertical surface. A side door 71 is rotatably mounted at the lower end of the vertical surface of the collection trough 7.

[0043] Among them, the chips turned by the turning tool 21 will fall into the collection trough 7, and the strip chips scraped off by the slap plate 62 will also fall into the collection trough 7. The inclined surface in the collection trough 7 makes these chips concentrate toward the side door 71. When the chips in the side door 71 need to be cleaned, the side door 71 can be opened to clear the chips in the collection trough 7.

[0044] Embodiment 2:

[0045] The difference from the above embodiment is that a chuck 12 and a mounting seat 13 are provided at both ends of the machine tool 1. The chuck 12 is assembled at the upper end of the machine tool 1 and is located above the guide rail 11. The bottom of the mounting seat 13 is slidably mounted on the guide rail 11. The upper end of the mounting seat 13 is equipped with a tail tip 131. The chuck 12 and the tail tip 131 correspond to each other and are respectively used to fix the two ends of the camshaft to be processed.

[0046] When placing the long shaft, the processing section of the long shaft used to cut into the camshaft is facing the chuck 12. After the long shaft passes through the positioning assembly 3, one end of the long shaft is fixed by the chuck 12, and the other end is abutted against the tail tip 131. When cutting starts, the machine tool 1 drives the long shaft to rotate through the chuck 12, so that the feed mechanism 2 controls the turning tool 21 for turning, wherein the end of the guide rail 11 close to the chuck 12 is the starting end.

[0047] The present invention also provides a camshaft processing process, which uses a camshaft processing lathe.

[0048] Working principle: When in use, first place the long shaft on the machine tool 1, wherein, initially, the feed mechanism 2 and the positioning assembly 3 are parked at one end of the machine tool 1 in sequence, and when the long shaft is placed through the fixed ring 34 and the movable rod of the positioning assembly 3, its two ends are respectively connected to the two ends of the machine tool 1. After the long shaft is placed, the driving assembly 5 drives the carrier plate 31 to move a distance toward the other end of the machine tool 1 on the guide rail 11, so that the carrier plate 31 stops at a suitable position, and then drives the positioning clamp 37 on the movable ring 35 to clamp the long shaft, so that the positioning assembly 3 supports the front small section of the long shaft to be turned through the movable ring 35, preventing the front small section of the long shaft to be turned from being deformed during the process of being processed into a camshaft, thereby improving the accuracy of the camshaft. In this process, as the carrier plate 31 moves, the driving assembly 5 also drives the connecting rod 61 of the cleaning assembly 6 to rotate, so that the two connecting rods 61 at the moving direction end of the carrier plate 31 The clapper 62 rotates toward the two guide rails 11 respectively. The clapper 62 is made of a flexible material such as rubber. When the clapper 62 turns to the guide rail 11, the clapper 62 hits the side wall of the upper end of the guide rail 11 and bends, so that the clapper 62 fits on the side wall of the guide rail 11. As the connecting rod 61 continues to rotate, the clapper 62 sticks to the side wall of the guide rail 11 and slides downward, and finally separates from the side wall of the guide rail 11 and recovers its deformation. The two ends of the carrier plate 31 are The connecting rod 61 rotates in the opposite direction with the clapper 62, and then the machine tool 1 rotates the camshaft to be processed, and the feed mechanism 2 uses the turning tool 21 to turn the front small section of the long shaft. During the turning process, some strip-shaped chips will be hung on the guide rail 11. At the same time, the camshaft to be processed drives the movable ring 35 to rotate on the fixed ring 34 under the fixation of the positioning clamp 37. When the front small section of the long shaft is turned, the turning tool 21 stops turning, and the machine tool 1 stops rotating the long shaft.

[0049] Then, the fixing of the long shaft by the positioning clamp 37 is released, and the carrying plate 31 is driven to move a suitable distance to the other end of the machine tool 1 by the driving component 5. After the next small section of the long shaft to be cut is exposed, the positioning clamp 37 re-clamps the camshaft. At this time, the machine tool 1 rotates the camshaft again, and the feed mechanism 2 turns the next small section of the long shaft through the turning tool 21. The above steps are repeated. During the cutting process, the long shaft is cut into several small sections by the positioning component 3, and then the turning tool 21 is controlled by the feed mechanism 2 to turn the long shaft into several small sections. These small sections are turned until the camshaft is turned out, and then the fixing of the camshaft by the positioning clamp 37 is released, and the long shaft processed into the camshaft is removed from the machine tool 1. At this time, the support plate 33 is rotated outward from the machine tool 1, so that the support plate 33 lying on the guide rail 11 becomes parallel to the outer side of the guide rail 11, and the carrier plate 31 is driven back by the driving assembly 5 to move toward the initial position, so that the two connecting rods 61 at the end of the movement direction of the carrier plate 31 drive the clapper 62 to rotate. When the clapper 62 hits the side wall of the guide rail 11, it will hang on the guide rail. The strip chips on the guide rail 11 are scraped off, so that the upper end of the guide rail 11 is kept clean. After the carrier plate 31 moves to the end of the guide rail 11, it stops moving and the feed mechanism 2 is reset. When the feed mechanism 2 moves to the top of the carrier plate 31, the feed mechanism 2 returns to the starting end, and then the carrier plate 31 is driven to move to the other end of the machine tool 1 through the drive assembly 5. When the carrier plate 31 moves out from the bottom of the feed mechanism 2, the support plate 33 is turned back and placed horizontally on the guide rail 11 again. At this time, the next long axis is placed on the machine tool and reset. Repeat the above steps to perform turning. In the process of the carrier plate 31 moving toward the other end of the machine tool 1, the connecting rod 61 at its moving direction end drives the clapper 62 to rotate, and the strip chips missed during the last cleaning are cleaned up. The chips turned by the turning tool 21 will fall into the collection trough 7, and the strip chips pulled off by the clapper 62 will also fall into the collection trough 7. The inclined surface in the collection trough 7 makes these chips concentrate toward the side door 71. When the chips in the side door 71 need to be cleaned, the side door 71 can be opened to clear the chips in the collection trough 7.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A camshaft machining lathe, comprising a machine tool and a guide rail mounted on the machine tool, characterized in that: The machine tool is provided with a feeding mechanism, a positioning assembly, a driving assembly and a cleaning assembly. A turning tool is assembled on the upper side of the feeding mechanism, and the lower side of the feeding mechanism is mounted on the upper end of the guide rail. The feeding mechanism can drive the turning tool to move on the guide rail to turn the camshaft on the machine tool. The positioning assembly includes a bearing plate, a support plate and a movable ring. The bearing plate is mounted on the guide rail and is located below the feeding mechanism. The bearing plate is connected to the lower end of the support plate. A fixed ring is provided on the upper end of the support plate. The movable ring is mounted in the fixed ring. A number of fixed rings are evenly distributed on the movable ring. The positioning clamp is used to clamp the camshaft to be processed, and when the camshaft is turned, the movable ring can rotate in the fixed ring driven by the camshaft. The driving assembly is installed on the carrier plate, and is used to drive the carrier plate to perform linear motion on the guide rail. The cleaning assembly includes a connecting rod and a clapper. The clapper is connected to one end of the connecting rod, and the other end of the connecting rod is inserted into the carrier plate from the end of the carrier plate, and the connecting rod cooperates with the driving assembly. When the driving assembly drives the carrier plate to move, it can drive the connecting rod to drive the clapper to rotate.

2. The camshaft processing lathe according to claim 1, characterized in that: There are two guide rails symmetrically distributed on the machine tool, and the two ends of the two guide rails are fixedly connected to the two ends of the machine tool respectively. A sliding groove is provided on each guide rail, and the sliding groove runs through the guide rail. A driving rack is fixedly installed on the guide rail away from the feed mechanism, and the driving rack is located at the top of the sliding groove.

3. The camshaft processing lathe according to claim 2, characterized in that: The two sides of the supporting plate are respectively slidably installed in one of the sliding grooves and extend out of the sliding groove. A connecting column is fixedly installed on the upper side of the supporting plate close to the feeding mechanism. The connecting column is higher than the guide rail. A drive box is fixedly installed on the supporting plate. The drive box is located between the two guide rails, and there is a gap between the top of the drive box and the top of the guide rail.

4. The camshaft processing lathe according to claim 3, characterized in that: The top end face of said sliding arm is fixedly provided with a toothed connecting strip which is cooperatively connected with said toothed connecting strip.

5. The camshaft processing lathe according to claim 4, characterized in that: The positioning clip is arc-shaped, and the positioning clip is fixedly connected to a locking rod on one side facing the mounting sleeve. Both sides of the locking rod are fixedly connected to limiting blocks. The upper end of the locking rod passes through the limiting groove and extends into the mounting sleeve, and the limiting block fits into the limiting groove, so that the locking rod cannot rotate. The upper end of the locking rod is rotatably connected to the lower end of the locking bolt, and the locking bolt is assembled in the mounting sleeve through a thread, and the upper end of the locking bolt extends from the mounting sleeve.

6. The camshaft processing lathe according to claim 5, characterized in that: The drive assembly includes a drive rod and a transmission rod, the drive rod is rotatably mounted on the bottom of the drive box, and the end of the drive rod away from the feed mechanism passes through the carrying plate and extends outward, the drive rod is coaxially fixedly connected with a handwheel, a drive gear and a worm in sequence, the handwheel is located on the protruding end of the drive rod, the drive gear is located outside the drive box, the drive gear is meshed with the drive rack, the worm is located inside the drive box, the two transmission rods are rotatably mounted in the drive box, located above the drive rod, the two transmission rods are coaxially fixedly connected with a transmission gear, the two transmission gears mesh with each other, and the transmission rod close to the drive gear is also coaxially fixedly connected with a worm wheel, and the worm wheel meshes with the worm wheel.

7. The camshaft processing lathe according to claim 6, characterized in that: There are four connecting rods in total, which are distributed in pairs at both ends of the driving box. The two connecting rods at each end of the driving box are respectively located on both sides of the driving box facing the guide rail, and the two connecting rods on one end of the driving box are located between the other two connecting rods. A driven gear is coaxially fixedly connected to one end of the connecting rod located in the driving box, and the driven gears on the two adjacent connecting rods are meshed with each other, and the driven gears on the two inner connecting rods are also meshed with a nearby transmission gear respectively, and the clapper is fixedly connected to the side of the other end of the connecting rod.

8. The camshaft processing lathe according to claim 7, characterized in that: The cleaning assembly also includes a collecting trough, which is fixedly installed on the machine tool and located below the guide rail. One side of the collecting trough is an inclined surface, and the other side is a vertical surface. A side door is rotatably installed at the lower end of the vertical surface of the collecting trough.

9. The camshaft processing lathe according to claim 1, characterized in that: A chuck and a mounting seat are provided at both ends of the machine tool. The chuck is assembled at the upper end of the machine tool and is located above the guide rail. The bottom of the mounting seat is slidably mounted on the guide rail. The upper end of the mounting seat is equipped with a tail top. The chuck and the tail top correspond to each other and are respectively used to fix the two ends of the camshaft to be processed.

10. A camshaft processing process, characterized in that: A camshaft processing lathe according to any one of claims 1 to 9 is used.

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