An eccentric shaft processing lathe with eccentric center structure

Abstract

The application relates to the technical field of eccentric shaft machining lathes, in particular to an eccentric shaft machining lathe with an eccentric center structure, which comprises a lathe main body, a fixed frame is fixedly connected to one side of the lathe main body, a moving frame is slidably arranged on the fixed frame, a rotating seat is rotatably arranged on the moving frame, a transmission mechanism is rotatably arranged on the rotating seat, a stabilizing ring frame is rotatably arranged on the rotating seat, a following rotating ring is rotatably arranged on the stabilizing ring frame, an eccentric block center mechanism is fixedly arranged on the following rotating ring, and an eccentric shaft is clamped and fixed on a three-jaw chuck on the lathe main body. The eccentric block center mechanism is arranged on the following rotating ring, two adjustable-angle center plates abut against the fan-shaped eccentric blocks on the eccentric shaft, the fan-shaped eccentric blocks on the eccentric shaft are more stably and accurately supported during the rotating machining of the eccentric shaft, vibration, imbalance and deformation are reduced, and the machining precision and quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of eccentric shaft machining lathe, and particularly relates to an eccentric shaft machining lathe with eccentric center structure. BACKGROUND

[0002] The eccentric shaft machining lathe with eccentric center structure mainly aims to stabilize and support the eccentric shaft through the special center structure, so as to perform accurate machining. Due to the asymmetry of the eccentric shaft, the traditional lathe center may not provide sufficient stability, which is easy to cause vibration, deviation or inaccurate machining.

[0003] The prior art document with the publication number CN222198894U provides a numerical control lathe for machining eccentric shaft. The movable plate is driven to move forward and backward by the electric push rod, so as to drive the blank into the grabbing range of the mechanical arm through the receiving disc. The receiving disc with the machined eccentric shaft is moved out of the grabbing range. At this time, the corresponding receiving disc can be taken out to collect the eccentric shaft. Meanwhile, a new receiving disc can be placed in the movable plate, and the blank can be arranged on the receiving disc. In this way, the continuous eccentric shaft machining operation can be realized without stopping, thereby improving the work efficiency. The receiving disc is placed in the placing frame, which facilitates taking and collecting the receiving disc.

[0004] In the use process of the prior art, the eccentric shaft is clamped and machined by the three-jaw chuck. However, the eccentric shaft is often equipped with fan-shaped eccentric blocks. The shape and mass distribution of these eccentric blocks are uneven, which may cause insufficient support of the eccentric shaft. The three-jaw chuck can only clamp the outer circle of the shaft, and cannot accurately support the position of the eccentric block. Due to the lack of special support for the eccentric block, the eccentric shaft may produce uneven vibration during machining, which affects the machining accuracy.

[0005] In summary, in the prior art, there is a lack of auxiliary support machining technology for eccentric shafts with fan-shaped eccentric blocks. SUMMARY

[0006] The purpose of the present application is to solve the shortcomings in the background art, and to provide an eccentric shaft machining lathe with eccentric center structure.

[0007] In order to achieve the above object, the technical scheme adopted by the present application is as follows: an eccentric shaft machining lathe with eccentric center structure, comprising a lathe main body, a fixed frame is fixedly connected on one side of the lathe main body, a movable frame is slidingly connected on the fixed frame, a rotating seat is rotatably connected on the movable frame, a transmission mechanism is rotatably connected on the rotating seat, a stabilizing ring frame is rotatably connected on the rotating seat, a following rotating ring is rotatably connected on the stabilizing ring frame, an eccentric block center mechanism is fixedly connected on the following rotating ring, and an eccentric shaft is clamped and fixed by a three-jaw chuck on the lathe main body.

[0008] Preferably, a sliding groove is formed through the fixed frame, a lead screw is rotatably connected on the inner wall of the sliding groove, the lead screw extends through the inner wall of the fixed frame to the outside and is fixedly connected with a first motor, the first motor is fixedly connected with the fixed frame, corrugated pipes are fixedly connected at both ends of the fixed frame, a connecting sleeve is fixedly connected at the other end of the corrugated pipe, the connecting sleeve is matched with the outer wall of the movable frame, a limiting rod is slidingly connected on one of the connecting sleeves, and a triangular block is fixedly connected on the other connecting sleeve.

[0009] Preferably, a sliding block is fixedly connected at the bottom end of the movable frame, the sliding block is slidingly connected with the inner wall of the sliding groove on the outer side, and the sliding block is threadedly connected with the lead screw in the middle part.

[0010] Preferably, a rotating column is fixedly connected at the bottom end of the rotating seat, and the rotating column is rotatably connected with the movable frame at the bottom end.

[0011] Preferably, a connecting block is fixedly connected at one end of the stabilizing ring frame, a rotating shaft is fixedly connected through the connecting block, the rotating shaft is rotatably connected with the rotating seat at both ends, a second motor is fixedly connected at one end of the rotating shaft, the second motor is fixedly connected with the rotating seat, a driving wheel is fixedly connected at the other end of the rotating shaft, and a limiting ring groove is formed in the stabilizing ring frame.

[0012] Preferably, the transmission mechanism comprises a universal joint, the universal joint is rotatably connected with the rotating seat, a driving wheel is fixedly connected at one end of the universal joint, the driving wheel is meshingly connected with the driving wheel, a driven wheel is fixedly connected at the other end of the universal joint, and the driven wheel is meshingly connected with the gear disc.

[0013] Preferably, a plurality of fixed blocks are fixedly connected on the outer side of the following rotating ring, rollers are rotatably connected on the fixed blocks, and the rollers are slidingly connected with the inner wall of the limiting ring groove.

[0014] Preferably, the eccentric block center mechanism comprises a first electric push rod, the first electric push rod is fixedly connected with the following rotary ring, the output end of the first electric push rod is fixedly connected with an adjusting frame, the bottom end of the adjusting frame is symmetrically connected with a center plate in a rotating manner, and the center plate is in abutment with the eccentric block on the eccentric shaft.

[0015] Preferably, a second electric push rod is fixedly connected on the adjusting frame, the output end of the second electric push rod is fixedly connected with an adjusting plate, both ends of the adjusting plate are rotatably connected with connecting rods, and the other ends of the connecting rods are rotatably connected with the center plate.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. By setting the eccentric block center mechanism on the following rotary ring, the two adjustable angle center plates are abutted on the fan-shaped eccentric blocks on the eccentric shaft, and when the eccentric shaft is rotating, the eccentric block center mechanism and the following rotary ring can be driven to rotate with the eccentric shaft, so that the fan-shaped eccentric blocks on the eccentric shaft are more stably and accurately supported, the vibration, imbalance and deformation are reduced, the machining precision and quality are improved, and the stability of the continuous machining process is ensured, the production efficiency and automation level are improved, the machining precision is significantly improved, the manual intervention is reduced, and more complex workpieces can be adapted.

[0018] 2. By setting the rotating seat and the transmission mechanism, the stable ring frame can be automatically rotated in the same direction as the lathe length when the stable ring frame is erected, so that the eccentric block center mechanism can be received on one side of the lathe, the space is saved, the equipment wear is reduced, the production efficiency, machining stability, automation degree and safety are improved, the flexibility of the equipment is enhanced, different machining tasks can be quickly adapted, the working environment is clean and the operation is convenient.

[0019] 3. By setting a plurality of rollers on the following rotary ring, the friction can be reduced when the following rotary ring rotates with the eccentric shaft, the stability is improved, the carrying capacity is enhanced, the vibration and noise are reduced, the service life of the equipment is prolonged, the equipment runs more efficiently, stably and reliably, the bellows is arranged outside the fixed frame, the lead screw can be effectively protected from external dirt, chips, moisture, corrosive substances and impact, the lead screw is kept clean, the service life is prolonged, and the precision and stability during the lathe machining process are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a side view of the overall structure of the eccentric shaft machining lathe with eccentric center structure.

[0021] Figure 2It is another side schematic view of the overall structure of the eccentric shaft machining lathe with eccentric center structure of the application;

[0022] Figure 3 It is a fixed frame structure partial section view expanded schematic view of the eccentric shaft machining lathe with eccentric center structure of the application;

[0023] Figure 4 It is a moving frame structure schematic view of the eccentric shaft machining lathe with eccentric center structure of the application;

[0024] Figure 5 It is a rotating seat and transmission mechanism structure schematic view of the eccentric shaft machining lathe with eccentric center structure of the application;

[0025] Figure 6 It is a stable ring frame structure partial section view schematic view of the eccentric shaft machining lathe with eccentric center structure of the application;

[0026] Figure 7 It is a following rotating ring structure schematic view of the eccentric shaft machining lathe with eccentric center structure of the application;

[0027] Figure 8 It is an eccentric block center mechanism structure schematic view of the eccentric shaft machining lathe with eccentric center structure of the application.

[0028] In the figure, 1 is a lathe main body, 2 is a fixed frame, 3 is a moving frame, 4 is a rotating seat, 5 is a transmission mechanism, 6 is a stable ring frame, 7 is a following rotating ring, 8 is an eccentric block center mechanism, 9 is an eccentric shaft, 201 is a sliding groove, 202 is a screw rod, 203 is a first motor, 204 is a bellows, 205 is a connecting sleeve, 206 is a limiting rod, 207 is a triangular block, 301 is a sliding block, 302 is a toothed disc, 401 is a rotating column, 601 is a connecting block, 602 is a rotating shaft, 603 is a second motor, 604 is a driving wheel, 605 is a limiting ring groove, 501 is a universal joint, 502 is a transmission wheel, 503 is a driven wheel, 701 is a fixed block, 702 is a roller, 801 is a first electric push rod, 802 is an adjusting frame, 803 is a center plate, 804 is a second electric push rod, 805 is an adjusting plate, and 806 is a connecting rod. DETAILED DESCRIPTION

[0029] The following description is used to disclose the application so that those skilled in the art can implement the application. The preferred embodiments in the following description are only as examples, and other obvious modifications can be thought of by those skilled in the art.

[0030] As Figures 1-8The eccentric shaft processing lathe with eccentric center structure shown, including lathe main body 1, one side of lathe main body 1 is fixedly connected with fixed frame 2, slidingly connected with moving frame 3 on fixed frame 2, rotatably connected with rotating seat 4 on moving frame 3, rotatably connected with transmission mechanism 5 on rotating seat 4, rotatably connected with stabilizing ring frame 6 on rotating seat 4, rotatably connected with following rotating ring 7 on stabilizing ring frame 6, fixedly connected with eccentric block center mechanism 8 on following rotating ring 7, three-jaw chuck on lathe main body 1 clamps and fixes eccentric shaft 9.

[0031] As Figure 3 shown, sliding slot 201 is provided on fixed frame 2, screw rod 202 is rotatably connected on the inner wall of sliding slot 201, one end of screw rod 202 extends to the outside through the inner wall of fixed frame 2 and is fixedly connected with first motor 203, first motor 203 is fixedly connected with fixed frame 2, corrugated pipe 204 is fixedly connected on both ends of fixed frame 2, connecting sleeve 205 is fixedly connected on the other end of corrugated pipe 204, connecting sleeve 205 is matched with the outer wall of moving frame 3, one of connecting sleeve 205 is slidingly connected with limiting rod 206, the other connecting sleeve 205 is fixedly connected with triangular block 207, triangular block 207 is slidingly connected with limiting rod 206. The first motor 203 drives the screw rod 202 to rotate, so that the moving frame 3 connected with the sliding block 301 moves, and the moving frame 3 drives the eccentric block center mechanism 8 to align the fan-shaped eccentric block on the eccentric shaft 9. By pushing the limiting rod 206, it is not in contact with the triangular block 207, so that the two connecting sleeves 205 can be separated, which is convenient for maintaining the screw rod 202.

[0032] As Figure 4 shown, sliding block 301 is fixedly connected on the bottom end of moving frame 3, sliding block 301 is slidingly connected with the inner wall of sliding slot 201 on the outer side, sliding block 301 is threadedly connected with screw rod 202 in the middle, and gear disc 302 is fixedly connected on the top end of moving frame 3.

[0033] As Figure 5 shown, rotating column 401 is fixedly connected on the bottom end of rotating seat 4, and rotating column 401 is rotatably connected with moving frame 3 on the bottom end.

[0034] As Figure 6As shown, the one end of the stable ring frame 6 is fixedly connected with a connecting block 601, a rotating shaft 602 is fixedly connected through the connecting block 601, the two ends of the rotating shaft 602 are rotatably connected with the rotating seat 4, the one end of the rotating shaft 602 is fixedly connected with a second motor 603, the second motor 603 is fixedly connected with the rotating seat 4, the other end of the rotating shaft 602 is fixedly connected with a driving wheel 604, and a limiting ring groove 605 is formed in the stable ring frame 6. The second motor 603 drives the rotating shaft 602 to rotate, so that the rotating shaft 602 drives the stable ring frame 6 connected with the connecting block 601 to rotate and stand up.

[0035] As shown in the figure, Figure 5 The transmission mechanism 5 includes a universal joint 501, the universal joint 501 is rotatably connected with the rotating seat 4, the one end of the universal joint 501 is fixedly connected with a transmission wheel 502, the transmission wheel 502 is in meshing transmission with the driving wheel 604, and the other end of the universal joint 501 is fixedly connected with a driven wheel 503, the driven wheel 503 is in meshing transmission with the toothed disc 302. The rotating rotating shaft 602 drives the driving wheel 604 connected therewith to rotate, so that the driving wheel 604 drives the transmission wheel 502 to rotate, the transmission wheel 502 drives the universal joint 501 connected therewith to rotate, the universal joint 501 drives the driven wheel 503 to rotate, and the driven wheel 503 is in meshing transmission with the toothed disc 302, so as to drive the rotating seat 4 to rotate by 90 degrees.

[0036] As shown in the figure, Figure 7 A plurality of fixed blocks 701 are fixedly connected outside the following rotating ring 7, a roller 702 is rotatably connected on the fixed block 701, and the roller 702 is in sliding fit with the inner wall of the limiting ring groove 605. When the lathe main body 1 drives the eccentric shaft 9 to rotate, the eccentric shaft 9 drives the following rotating ring 7 connected with the eccentric block center mechanism 8 to rotate, at this time, the roller 702 on the following rotating ring 7 rotates in the limiting ring groove 605.

[0037] As shown in the figure, Figure 8 The eccentric block center mechanism 8 includes a first electric push rod 801, the first electric push rod 801 is fixedly connected with the following rotating ring 7, an adjusting frame 802 is fixedly connected at the output end of the first electric push rod 801, the bottom end of the adjusting frame 802 is rotatably connected with a center block 803 in a symmetrical structure, and the center block 803 abuts against the eccentric block on the eccentric shaft 9. A rubber pad is arranged on the side of the center block 803 in contact with the eccentric block, the rubber pad can effectively absorb the impact force and friction force between the eccentric block and the center block 803, reduce the vibration and impact of mechanical transmission, and reduce the noise in the machining process. This is especially important for precision machining and mechanical equipment that needs to run for a long time, which can prolong the service life of the machine.

[0038] The second electric push rod 804 is fixedly connected on the adjusting frame 802, the output end of the second electric push rod 804 is fixedly connected with the adjusting plate 805, the two ends of the adjusting plate 805 are rotatably connected with the connecting rods 806, and the other ends of the connecting rods 806 are rotatably connected with the top tip plates 803. The second electric push rod 804 drives the connected adjusting plate 805 to move, so that the adjusting plate 805 can adjust the angles of the two top tip plates 803 through the connecting rods 806, and then the first electric push rod 801 drives the adjusting frame 802 to move downward, so that the adjusting frame 802 can drive the two top tip plates 803 to abut against the fan-shaped eccentric blocks on the eccentric shaft 9.

[0039] The eccentric block top tip mechanism 8 is arranged on the following rotating ring 7, the two angle-adjustable top tip plates 803 abut against the fan-shaped eccentric blocks on the eccentric shaft 9, and when the eccentric shaft 9 rotates during machining, the eccentric block top tip mechanism 8 and the following rotating ring 7 can rotate with the eccentric shaft 9, so that the fan-shaped eccentric blocks on the eccentric shaft 9 are more stably and accurately supported, vibration, imbalance and deformation are reduced, machining precision and quality are improved, and the stability of continuous machining process is ensured, the production efficiency and automation level are improved, the machining precision is significantly improved, manual intervention is reduced, and more complex workpieces can be adapted.

[0040] Working principle: when the eccentric shaft 9 with fan-shaped eccentric blocks needs to be machined, first, the eccentric shaft 9 is fixed at one end on the three-jaw chuck on the lathe body 1, then the first motor 203 drives the screw rod 202 to rotate, so that the screw rod 202 drives the moving frame 3 connected with the sliding block 301 to move, so that the moving frame 3 drives the eccentric block top tip mechanism 8 to align with the fan-shaped eccentric blocks on the eccentric shaft 9;

[0041] Then the second electric push rod 804 drives the connected adjusting plate 805 to move, so that the adjusting plate 805 can adjust the angles of the two top tip plates 803 through the connecting rods 806, and then the first electric push rod 801 drives the adjusting frame 802 to move downward, so that the adjusting frame 802 can drive the two top tip plates 803 to abut against the fan-shaped eccentric blocks on the eccentric shaft 9;

[0042] Then when the lathe body 1 drives the eccentric shaft 9 to rotate and machine, the eccentric shaft 9 drives the following rotating ring 7 connected with the eccentric block top tip mechanism 8 to rotate, and at this time the rollers 702 on the following rotating ring 7 rotate in the limiting ring groove 605;

[0043] After machining, the eccentric shaft 9 is removed first, and then the second motor 603 drives the connected rotating shaft 602 to rotate, so that the rotating shaft 602 can drive the connected stabilizing ring frame 6 to rotate and stand up;

[0044] The rotating shaft 602 rotates the connected driving wheel 604, which drives the transmission wheel 502, which drives the connected universal joint 501, which drives the connected driven wheel 503, which engages with the gear disc 302, thereby rotating the rotating seat 4 by 90 degrees, which drives the transmission mechanism 5 to retract.

[0045] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments or applications of a variety of modifications apparent from this disclosure. It is intended, therefore, that the specification and illustrated embodiments be considered as exemplary only, with a scope of the application being indicated by the following claims.

[0046] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An eccentric shaft machining lathe having an eccentric center structure, comprising a lathe body (1), characterized in that: The lathe body (1) one side fixedly connected with the fixed frame (2) is arranged, the fixed frame (2) is slidably connected with the moving frame (3), the moving frame (3) is rotatably connected with the rotating seat (4), the rotating seat (4) is rotatably connected with the transmission mechanism (5), the rotating seat (4) is rotatably connected with the stable ring frame (6), the stable ring frame (6) is rotatably connected with the following rotating ring (7), the following rotating ring (7) is fixedly connected with the eccentric block center mechanism (8), the three-jaw chuck on the lathe body (1) is clamped and fixed with the eccentric shaft (9), the rotating seat (4) bottom fixedly connected with the rotating column (401), the rotating column (401) bottom is rotatably connected with the moving frame (3), the stable ring frame (6) one end fixedly connected with the connecting block (601), the connecting block (601) is fixedly connected with the rotating shaft (602), the rotating shaft (602) both ends are rotatably connected with the rotating seat (4), the rotating shaft (602) one end is fixedly connected with the second motor (603), the second motor (603) is fixedly connected with the rotating seat (4), the rotating shaft (602) the other end is fixedly connected with the driving wheel (604), the stable ring frame (6) is provided with the limit ring groove (605), the transmission mechanism (5) includes universal joint (501), the universal joint (501) is rotatably connected with the rotating seat (4), the universal joint (501) one end is fixedly connected with the transmission wheel (502), the transmission wheel (502) is meshed with the driving wheel (604), the universal joint (501) the other end is fixedly connected with the driven wheel (503), the driven wheel (503) is meshed with the toothed disc (302), the following rotating ring (7) outside fixedly connected with a plurality of fixed blocks (701), the fixed block (701) is rotatably connected with the roller (702), the roller (702) and the limit ring groove (605) inner wall slidably connected with the fixed block (701), the eccentric block center mechanism (8) includes first electric push rod (801), the first electric push rod (801) is fixedly connected with the following rotating ring (7), the first electric push rod (801) output end fixedly connected with the adjusting frame (802), the adjusting frame (802) bottom is rotatably connected with the center plate (803) of symmetrical structure, the center plate (803) and the eccentric block on the eccentric shaft (9) abut.

2. The eccentric shaft machining lathe with eccentric center structure according to claim 1, characterized in that: The fixed frame (2) is provided with a sliding groove (201) penetrating through, a screw rod (202) is rotatably connected to the inner wall of the sliding groove (201), one end of the screw rod (202) extends to the outside through the inner wall of the fixed frame (2) and is fixedly connected with a first motor (203), the first motor (203) is fixedly connected with the fixed frame (2), both ends of the fixed frame (2) are fixedly connected with bellows (204), the other end of the bellows (204) is fixedly connected with a connecting sleeve (205), the connecting sleeve (205) is matched with the outer wall of the moving frame (3), one of the connecting sleeves (205) is slidably connected with a limiting rod (206), the other connecting sleeve (205) is fixedly connected with a triangular block (207), and the triangular block (207) is in sliding contact with the limiting rod (206).

3. The eccentric shaft machining lathe with eccentric center structure according to claim 2, characterized in that: The bottom end of the moving frame (3) is fixedly connected with a sliding block (301), the outer side of the sliding block (301) is slidably connected with the inner wall of the sliding groove (201), the middle part of the sliding block (301) is threadedly connected with the screw rod (202), and the top end of the moving frame (3) is fixedly connected with a toothed disc (302).

4. The eccentric shaft machining lathe having eccentric center structure according to claim 1, characterized in that: The adjusting frame (802) is fixedly connected with a second electric push rod (804), the output end of the second electric push rod (804) is fixedly connected with an adjusting plate (805), both ends of the adjusting plate (805) are rotatably connected with connecting rods (806), and the other end of the connecting rod (806) is rotatably connected with the center plate (803).

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