CN117381504A

CN117381504A - Feeding knife rest for turning non-circle and eccentric circle of numerical control lathe

Info

Publication number: CN117381504A
Application number: CN202311532919.0A
Authority: CN
Inventors: 廖魁; 卢瑞玉; 陈五俊
Original assignee: Jiangsu Meishike Motor Manufacturing Co ltd
Current assignee: Jiangsu Meishike Motor Manufacturing Co ltd
Priority date: 2023-11-16
Filing date: 2023-11-16
Publication date: 2024-01-12
Anticipated expiration: 2043-11-16
Also published as: CN117381504B

Abstract

The application discloses a feeding knife rest of non-circular and eccentric circle turning of a numerical control lathe, and relates to the technical field of lathe knife rests. The application comprises the following steps: the installation cover, install linear electric motor in the installation cover, install the connecting plate on the linear electric motor, install the grating chi in the installation cover, the grating chi with the connecting plate is connected, install the installation pole that one end is located outside on the connecting plate. This application is compared in the mode that drives lead screw driven through the motor through linear electric motor cooperation grating chi, the precision is higher, the error has been reduced, and can make the locating lever on the mounting panel remove simultaneously through actuating mechanism for the locating lever can conflict fast on the cutter, need not twist the screw one by one, more convenient during the use, the time has been practiced thrift, and can effectually prevent that the locating lever conflict from appearing the not enough condition of conflict power on the cutter through stopping the mechanism, thereby reduce the possibility of collapsing the sword.

Description

Feeding knife rest for turning non-circle and eccentric circle of numerical control lathe

Technical Field

The application relates to the technical field of lathe tool rests, in particular to a feeding tool rest for turning non-circles and eccentric circles of a numerical control lathe.

Background

Currently, numerical control lathes have problems in turning non-circles and eccentric circles. Firstly, after the cutter on the cutter rest breaks, a plurality of fixing screws on the cutter rest need to be screwed out to replace the cutter, so that the cutter rest is inconvenient and time is wasted, after the cutter is mounted on the cutter rest, workers cannot easily control screwing force when screwing the screws, the situation of unscrewing easily occurs, and therefore the cutter is easy to vibrate during cutting, the cutting effect is affected, and the cutter breaking is easier to cause. Secondly, when the existing tool rest is used for moving and turning, micro-movement is realized through the rotation of a motor and a screw rod, however, a screw rod gap can cause control errors, even though the actual errors are compensated by a system, the actual errors cannot be completely avoided, and the screw rod gap can be increased along with the increase of the service time. In particular, in non-circular machining, the tool requires high-frequency micro-reciprocating feed, which requires high-frequency and high-response forward and reverse rotation of the servo motor, further exacerbating the increase of screw clearance, and requires long-term maintenance and adjustment.

Therefore, the invention provides a feeding tool rest for turning non-circular and eccentric circles of a numerical control lathe.

Disclosure of Invention

The purpose of the present application is: in order to solve the problems in the background technology, the application provides a feeding tool rest for turning non-circles and eccentric circles of a numerical control lathe.

The application specifically adopts the following technical scheme for realizing the purposes:

a feed carriage for non-circular and eccentric circular turning of a numerically controlled lathe, comprising:

the linear motor is arranged in the mounting cover, a connecting plate is arranged on the linear motor, a grating ruler is arranged in the mounting cover and connected with the connecting plate, and a mounting rod with one end positioned outside is arranged on the connecting plate;

the connecting frame is arranged at the free end of the mounting rod, a circular array is arranged on the connecting frame, a plurality of mounting plates are arranged on the connecting frame, and a plurality of positioning rods are arranged on the mounting plates in a sliding manner;

the driving mechanism is arranged on the mounting plate and acts on a plurality of positioning rods and is used for driving the positioning rods on the same mounting plate to move simultaneously;

and the stopping mechanism is arranged on the mounting plate and acts on the positioning rod, and when the bottom end of the positioning rod is abutted on the cutter and the abutting force reaches a threshold value, the stopping mechanism is used for stopping movement of the positioning rod and giving out a prompt.

Further, a plurality of through holes are formed in the top of the mounting plate along the length direction of the mounting plate, an internal thread cylinder is inserted into the through holes in a rotating mode, the positioning rod is inserted into the internal thread cylinder in a penetrating mode, a limiting groove is formed in one side of the positioning rod along the length direction of the positioning rod, a limiting block located in the limiting groove is formed in the through holes in a structure mode, and the driving mechanism is connected with the internal thread cylinder through the stopping mechanism.

Further, the stop mechanism comprises a rotating ring which is rotatably arranged at the top of the mounting plate, a plurality of mounting grooves are formed in the inner periphery side of the rotating ring, which is coaxial with the internal thread cylinder, a plurality of wedge-shaped plates are inserted in the mounting grooves in a sliding manner, a collision elastic sheet is arranged between the wedge-shaped plates and the mounting grooves, wedge-shaped grooves are formed in the outer periphery side of the internal thread cylinder, and the wedge-shaped plates are inserted by the driving mechanism acting on the rotating ring.

Further, the driving mechanism comprises driven gears arranged on the outer peripheral side of the rotating ring, adjacent driven gears are meshed with each other, and a polygonal screwing block is arranged at the top of one driven gear.

Further, the mounting plate is vertically and slidably mounted on the connecting frame, and a transmission assembly for driving the mounting plate to move is mounted on the connecting frame.

Further, the transmission assembly comprises an adjusting rod with one end rotatably mounted on the connecting frame, a linkage rod is hinged between the adjusting rod and the mounting plate, and a limiting piece for releasing limit or limiting the rotation of the adjusting rod is mounted on the connecting frame.

Further, the locating part includes horizontal sliding mounting is in drive plate on the link, the symmetry is constructed with two spinal branch poles on the drive plate, the movable groove has all been seted up along its length direction to the both sides that adjust the pole and be on the back of the body, two the spinal branch pole slides respectively tangentially in two in the movable groove, the horizontal construction has the body of rod on the drive plate, slidable mounting has limiting gear on the body of rod, limiting gear with install reset spring between the body of rod, install on the link with limiting rack of limiting gear meshing.

Further, one end of the mounting rod is hinged to the connecting plate, and the linear bearing sleeved on the mounting rod in a sliding manner is mounted on the mounting cover.

Further, the installation pole includes with connecting plate articulated loop bar and slip cap establishes sleeve on the loop bar, linear bearing slip cap is established on the sleeve, two bar tooth's socket have been seted up to the symmetry on the sleeve inner wall, the loop bar inside rotate install two respectively with two bar tooth's socket engaged drive gear, install driving motor on the installation pole, driving motor output shaft and two install the interlock between the drive gear.

Further, the interlock piece includes two sets of synchronizing pieces, the synchronizing piece includes two driving rolls and transmission connection synchronous tooth area between two driving rolls, synchronous tooth area with correspond drive gear engagement, a side of synchronous tooth area all is constructed with the protruding pole, slidable mounting has the interlock frame on the loop bar, two the loop bar is all slidable tangent in the interlock frame, one of them driving roll is connected with driving motor.

The beneficial effects of this application are as follows:

this application leads to linear electric motor cooperation grating chi compare in driving lead screw driven mode through the motor, the precision is higher, the error has been reduced, and can make the locating lever on the mounting panel remove simultaneously through actuating mechanism, thereby make the locating lever can conflict fast on the cutter, need not twist the screw one by one, more convenient during the use, the time has been practiced thrift, and can effectually prevent that the locating lever conflict from appearing the condition that the conflict power is not enough on the cutter through stopping the mechanism, thereby reduce the possibility of collapsing the sword.

Drawings

FIG. 1 is a schematic perspective view of the present application;

FIG. 2 is a partial perspective cross-sectional view of FIG. 1 of the present application;

FIG. 3 is a schematic view of a portion of the structure of the present application;

FIG. 4 is a schematic view of the mounting bar construction of the present application;

FIG. 5 is a partial perspective cross-sectional view of FIG. 4 of the present application;

FIG. 6 is an enlarged view of the structure of FIG. 5A of the present application;

FIG. 7 is a schematic view of a further portion of the construction of the present application;

FIG. 8 is a partial perspective cross-sectional view of FIG. 7 of the present application;

FIG. 9 is an exploded view of FIG. 4 of the present application;

FIG. 10 is an exploded view of a portion of the construction of the present application;

FIG. 11 is a schematic view of another view of FIG. 10 of the present application;

FIG. 12 is an exploded view of yet another portion of the construction of the present application;

FIG. 13 is an enlarged view of the structure of FIG. 9B of the present application;

reference numerals: 1. a mounting cover; 2. a linear motor; 3. a connecting plate; 4. a grating ruler; 5. a mounting rod; 501. a loop bar; 502. a sleeve; 503. a strip-shaped tooth slot; 504. a drive gear; 505. a driving motor; 506. a linkage member; 5061. a driving roller; 5062. a linkage frame; 5063. a synchronous toothed belt; 5064. a protruding rod; 6. a connecting frame; 7. a mounting plate; 8. a positioning rod; 9. a driving mechanism; 901. a driven gear; 902. polygonal screwing blocks; 10. a stopping mechanism; 1001. a rotating ring; 1002. a mounting groove; 1003. wedge plate; 1004. a pressing spring plate; 1005. wedge-shaped grooves; 11. perforating; 12. an internal thread cylinder; 13. a limit groove; 14. a limiting block; 15. a transmission assembly; 1501. an adjusting rod; 1502. a linkage rod; 1503. a limiting piece; 15031. a driving plate; 15032. a post; 15033. a movable groove; 15034. a rod body; 15035. a limit gear; 15036. a return spring; 15037. a limit rack; 16. a linear bearing.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

As shown in fig. 1 to 13, a feed tool holder for non-circular and eccentric turning of a numerically controlled lathe according to an embodiment of the present application includes:

the linear motor 2 is arranged in the mounting cover 1, the connecting plate 3 is arranged on the linear motor 2, the connecting plate 3 can horizontally move through the linear motor 2, the linear motor 2 is of an existing structure, a TICO (tungsten inert gas) natural power linear motor can be adopted, compared with the mode that the existing screw rod rotates to drive the tool rest to move, the linear motor 2 directly drives the tool rest to move, the middle transmission error is eliminated, the working precision is improved, the grating ruler 4 is arranged in the mounting cover 1, the grating reading head of the grating ruler 4 is connected with the connecting plate 3, the grating ruler 4 is a precise displacement measuring sensor and can synchronously measure the feeding of the tool rest, the control system of the linear motor 2 can form closed-loop control, the precision is higher, the mounting rod 5 with one end positioned outside is arranged on the connecting plate 3, and the mounting rod 5 can be indirectly driven to move when the connecting plate 3 moves;

the connecting frame 6 is arranged at the free end of the mounting rod 5, the connecting frame 6 is a tool rest, the whole tool rest is rectangular I-shaped (shown in figure 1), a plurality of mounting plates 7 are arranged on the connecting frame 6 in a circular array, a plurality of positioning rods 8 are slidably arranged on the mounting plates 7, and after a tool is placed at the concave position of the mounting plates 7, the position of the tool is fixed by moving the plurality of positioning rods 8;

the driving mechanism 9 is arranged on the mounting plate 7 and acts on the positioning rods 8, and the positioning rods 8 positioned on the same mounting plate 7 can be driven to move simultaneously through the driving mechanism 9, so that the positioning rods 8 can be rapidly moved towards the direction of the cutter, the cutter can be mounted more rapidly, and the cutter can be detached more conveniently;

a stop mechanism 10 which is mounted on the mounting plate 7 and acts on the positioning rod 8, when the bottom end of the positioning rod 8 is abutted against the cutter and the abutting force reaches the threshold value, the stop mechanism 10 stops the movement of the positioning rod 8 and gives a prompt, that is, when the plurality of positioning rods 8 are moved to fix the cutter by the driving mechanism 9, the bottom end of the positioning rod 8 is contacted with the top of the cutter, the positioning rod 8 is continuously moved downwards by the driving mechanism 9 to abut against the cutter, when the abutting force between the positioning rod 8 and the cutter reaches the threshold value along with the increase of the abutting force, the stop mechanism 10 stops the movement of the positioning rod 8 reaching the threshold value, and the other positioning rods 8 continue to move until the plurality of positioning rods 8 on the mounting plate 7 reach the threshold value, the stop mechanism 10 gives a prompt to inform which positioning rod 8 reaches a threshold value, so that a worker can intuitively see that the positioning rods 8 reach the threshold value, the threshold value of the interference force between the positioning rods 8 and the cutter can be understood that the positioning rods 8 and the cutter are already in a fixed state when the interference force is reached, the cutter is not easy to loosen during processing, and is similar to the state that a torque spanner reaches torque during screwing, compared with the prior art, the linear motor 2 is matched with the grating ruler 4 to drive a screw rod through a motor, the precision is higher, the error is reduced, the positioning rods 8 on the mounting plate 7 can be simultaneously moved through the driving mechanism 9, so that the positioning rods 8 can be quickly interfered on the cutter without screwing screws one by one, and the use is more convenient, time is saved, and the situation that the positioning rod 8 is collided on the cutter and the collision force is insufficient can be effectively prevented by the stop mechanism 10, so that the possibility of cutter breakage is reduced.

As shown in fig. 1, 10 and 11, in some embodiments, the top of the mounting plate 7 is provided with a plurality of through holes 11 along the length direction thereof, the through holes 11 are internally and rotatably inserted with an internal thread cylinder 12, that is, the internal thread cylinder 12 can rotate in the through holes 11 but cannot move along the length direction of the through holes 11, the positioning rod 8 is threaded and inserted in the internal thread cylinder 12, when the internal thread cylinder 12 rotates, the positioning rod 8 is driven to rotate, but one side of the positioning rod 8 is provided with a limit groove 13 along the length direction thereof, and the through holes 11 are internally provided with limit blocks 14 positioned in the limit groove 13, so that when the threaded inner cylinder rotates, the limiting blocks 14 are positioned in the limit groove 13, the vertical movement of the positioning rod 8 is realized, because of self-locking property of the threaded fit, the positioning rod 8 abutted against a cutter is not easy to loose, and the driving mechanism 9 is connected with the internal thread cylinder 12 through the stop mechanism 10, that is, the driving mechanism 9 can rotate, so as to drive the internal thread cylinder 12 to rotate.

As shown in fig. 1, 10 and 11, in some embodiments, the stop mechanism 10 includes a rotating ring 1001 rotatably mounted on the top of the mounting plate 7, the driving mechanism 9 may drive the rotating ring 1001 to rotate, the rotating ring 1001 is coaxial with the internal thread cylinder 12, and a plurality of mounting grooves 1002 are formed on the inner circumference side, a certain gap is formed between the inner side of the rotating ring 1001 and the outer side of the internal thread cylinder 12, a plurality of wedge plates 1003 are slidably inserted in the mounting grooves 1002, one end of the wedge plates 1003 located in the mounting grooves 1002 is configured with a bump, the bump is attached to the inner circumference side of the mounting grooves 1002, an interference elastic sheet 1004 is mounted between the bump and the mounting grooves 1002, a wedge groove 1005 is formed on the outer circumference side of the internal thread cylinder 12 for inserting the wedge plates 1003, when the rotating ring 1001 rotates, the plurality of rotating rings 1001 on the mounting plate 7 rotate simultaneously because the wedge plates 1003 always abut in the wedge grooves 1005 through the interference elastic sheet 1004, the rotation of the rotating ring 1001 indirectly rotates the internal thread cylinder 12, the inclined plane on the wedge plate 1003 and the inclined plane of the wedge groove 1005 are in a collision relation, when the collision force between the positioning rod 8 and the cutter reaches a threshold value, the continuous rotation of the rotating ring 1001 causes the collision spring plate 1004 to be compressed, so that the wedge plate 1003 moves along the inclined plane of the wedge groove 1005, the wedge plate 1003 is retracted into the mounting groove 1002, a worker can intuitively see that the wedge plate 1003 is separated from the wedge groove 1005, the worker knows which positioning rod 8 is in a screwing state, and further, the rotating ring 1001 is continuously rotated, the wedge plate 1003 corresponding to the screwing positioning rod 8 is repeatedly inserted into and separated from the wedge groove 1005 (because of the elastic deformation characteristic of the collision spring plate 1004), so that a click sound is generated, and the worker can be assisted to prompt that the positioning rod 8 is screwed, until a plurality of locating rods 8 on the mounting plate 7 all send the sound of clicking, so locating rod 8 has screwed up, when needs dismantle the cutter, then need reverse rotation swivel ring 1001 for the plane of wedge plate 1003 is contradicted with the plane of wedge groove 1005, thereby can not follow wedge groove 1005 in the time of dismantling the cutter wedge plate 1003 and break away from, and is comparatively convenient during the use.

As shown in fig. 9 and 10, in some embodiments, the driving mechanism 9 includes driven gears 901 mounted on the outer periphery of the rotating ring 1001, adjacent driven gears 901 are engaged with each other, a polygonal screwing block 902 is mounted on the top of one of the driven gears 901, preferably, a hole is formed in the polygonal screwing block 902, so that a worker can observe the position of the wedge plate 1003 conveniently, when one of the driven gears 901 rotates, because the driven gears 901 rotate to drive the adjacent driven gears 901 to rotate, the plurality of driven gears 901 on the mounting plate 7 rotate, it is required to explain that the thread directions of the internal thread cylinders 12 are not the same, when one of the internal thread cylinders 12 is right-handed, the adjacent internal thread cylinders can be left-handed, so that when one of the driven gears 901 rotates, the plurality of positioning rods 902 on the mounting plate 7 can move towards the same direction, the polygonal screwing block 902 can be conveniently rotated by the design of the polygonal screwing block 902 by the cooperation of a wrench, and the synchronism of the movement of the positioning rods 8 can be ensured by adopting the driven gears 901, when one of the positioning rods 8 is abutted against the other positioning rods 8, and when the positioning rods 8 are abutted against the other positioning rods, the other positioning rods can be more conveniently used.

As shown in fig. 3 and 10, in some embodiments, the mounting plate 7 is vertically slidably mounted on the connection frame 6, and the transmission assembly 15 for driving the mounting plate 7 to move is mounted on the connection frame 6, that is, the mounting plate 7 can be vertically moved by the transmission assembly 15, so that when the positioning rod 8 needs to be quickly contacted with or separated from the cutter, the quick movement can be realized by the transmission assembly 15, thereby rotating the driven gear 901 without using a handle, and further improving the speed of disassembling the cutter.

As shown in fig. 12, in some embodiments, the transmission assembly 15 includes an adjusting lever 1501 with one end rotatably mounted on the connecting frame 6, a linkage rod 1502 is hinged between the adjusting lever 1501 and the mounting plate 7, a limiting member 1503 for releasing the limit or limiting the rotation of the adjusting lever 1501 is mounted on the connecting frame 6, when the adjusting lever 1501 is rotated, the adjusting lever 1501 rotates to pull the linkage rod 1502 to move, because one end of the linkage rod 1502 is hinged on the mounting plate 7, the adjusting lever 1501 rotates to pull the mounting plate 7 to move through the linkage rod 1502, and the adjusting lever 1501 only needs to rotate a small angle to cooperate with the linkage rod 1502 to enable the mounting plate 7 to move a certain distance quickly, so that the transmission assembly is convenient to use, and after the position of the adjusting lever 1501 is moved, the position of the adjusting lever 1501 is limited by the limiting member 1503.

As shown in fig. 12, in some embodiments, a limit piece 1503 includes a driving plate 15033 mounted on a connecting frame 6 in a horizontal sliding manner, two posts 15033 are symmetrically configured on the driving plate 15033, two sides of an adjusting rod 1501 are provided with movable grooves 15033 along the length direction, the two posts 15033 are respectively in sliding tangency with each other in the two movable grooves 15033, a rod body 15034 is horizontally configured on the driving plate 15033, a limit gear 15035 is mounted on the rod body 15034 in a sliding manner, a hand-held cylinder is mounted on the limit gear 15035 for convenience, a reset spring 15036 is mounted between the limit gear 1505 and the rod 15034, a limit rack 15037 meshed with the limit gear 15035 is mounted on the connecting frame 6, when the driving plate 15031 is moved, the limit gear 15033 is pulled first, the limit gear 15035 is separated from the limit rack 15037, and thus the limit rack 15037 is contacted, the limit gear 15037 can be moved normally, the driving plate 15033 can be moved, the driving plate 15032 is moved indirectly, the reset spring 15033 is moved, the reset spring 15033 is mounted between the two posts 15033, and the limit gear 15033 is not in the same position, and the limit gear 15033 is moved, and the limit rack 15037 is moved with high-precision, and the limit gear 15033 is moved by the position of the connecting frame 15033, and the position of the connecting frame 15033.

As shown in fig. 4 and 9, in some embodiments, one end of the mounting rod 5 is hinged to the connecting plate 3, and the other end of the mounting rod is hinged, so that energy loss caused by friction between the mounting rod 5 and the connecting plate 3 can be reduced, in addition, vibration and impact force generated by movement of the connecting plate 3 can be reduced by a hinged connection mode, stability and safety of the system are improved, a linear bearing 16 which is slidably sleeved on the mounting rod 5 is mounted on the mounting cover 1, the linear bearing 16 is located at the front end of the mounting cover 1, and the mounting rod 5 can be supported and guided to perform linear feeding better, so that the problem of weak rigidity caused by large extension length of the mounting rod 5 is prevented.

As shown in fig. 5 and 6, in some embodiments, the mounting rod 5 includes a sleeve rod 501 hinged to the connecting plate 3 and a sleeve 502 slidably sleeved on the sleeve rod 501, the linear bearing 16 is slidably sleeved on the sleeve 502, two bar-shaped tooth grooves 503 are symmetrically formed on the inner wall of the sleeve 502, two driving gears 504 meshed with the two bar-shaped tooth grooves 503 are rotatably mounted inside the sleeve rod 501, a driving motor 505 is mounted on the mounting rod 5, a linkage member 506 is mounted between an output shaft of the driving motor 505 and the two driving gears 504, that is, the driving gears 504 can be rotated by the driving motor 505, the sleeve 502 can be moved because the driving gears 504 are meshed with the bar-shaped tooth grooves 503, the driving gears 504 are fine teeth, teeth are denser, and therefore, the precision is higher, when the tool rest needs to be precisely moved in the machining process, the sleeve 502 can be driven to move by starting the driving motor 505, so that the error value is further reduced in the machining process.

As shown in fig. 5 and 6, in some embodiments, the linking member 506 includes two sets of synchronizing members, the synchronizing members include two driving rollers 5061 and a synchronous toothed belt 5063 connected between the two driving rollers 5061 in a driving manner, the synchronous toothed belt 5063 is meshed with the corresponding driving gear 504, a convex rod 5064 is configured on one side surface of the synchronous toothed belt 5063, a linking frame 5062 is slidably mounted on the sleeve rod 501, one driving roller 5061 is connected with the driving motor 505, the two sleeve rods 501 are slidably tangent in the linking frame 5062, when the motor rotates, the corresponding driving roller 5061 rotates, the driving roller 5061 simultaneously rotates through the synchronous toothed belt 5063 when rotating, and because teeth on the outer periphery of the synchronous toothed belt 5063 are meshed with the driving gear 504, the corresponding driving gear 504 is driven to rotate, and because the convex rod 5064 is indirectly driven to move by the movement of the synchronous toothed belt 5063, the linking frame 5062 is driven to move when the linking frame 5062 is moved, the other convex rod 5062 is driven to move along with the other driving gear 5063, and the other driving gear 5064 is driven to move symmetrically when the other driving gear 502 is driven to move.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A feed tool holder for non-circular and eccentric circular turning of a numerically controlled lathe, comprising:

the device comprises an installation cover (1), wherein a linear motor (2) is installed in the installation cover (1), a connecting plate (3) is installed on the linear motor (2), a grating ruler (4) is installed in the installation cover (1), the grating ruler (4) is connected with the connecting plate (3), and an installation rod (5) with one end located outside is installed on the connecting plate (3);

the connecting frame (6) is arranged at the free end of the mounting rod (5), a circular array is arranged on the connecting frame (6) and provided with a plurality of mounting plates (7), and a plurality of positioning rods (8) are slidably arranged on the mounting plates (7);

a driving mechanism (9) which is installed on the installation plate (7) and acts on a plurality of positioning rods (8) and is used for driving a plurality of positioning rods (8) positioned on the same installation plate (7) to move simultaneously;

stopping mechanism (10) install on mounting panel (7) and act on locating lever (8), work as locating lever (8) bottom is contradicted on the cutter and is contradicted the power and reach the threshold value, through stopping mechanism (10) so that locating lever (8) stop the removal and send the suggestion.

2. The feeding knife rest for non-circular and eccentric circular turning of a numerical control lathe according to claim 1, wherein a plurality of through holes (11) are formed in the top of the mounting plate (7) along the length direction of the mounting plate, an inner thread cylinder (12) is rotatably inserted into the through holes (11), a positioning rod (8) is threaded and inserted into the inner thread cylinder (12), a limit groove (13) is formed in one side of the positioning rod (8) along the length direction of the positioning rod, a limit block (14) positioned in the limit groove (13) is formed in the through holes (11), and the driving mechanism (9) is connected with the inner thread cylinder (12) through the stop mechanism (10).

3. The feeding knife rest for non-circular and eccentric circular turning of a numerical control lathe according to claim 2, wherein the stopping mechanism (10) comprises a rotating ring (1001) rotatably mounted at the top of the mounting plate (7), the rotating ring (1001) is coaxial with the internal thread cylinder (12), a plurality of mounting grooves (1002) are formed in the inner circumference side of the rotating ring, a plurality of wedge plates (1003) are inserted in the mounting grooves (1002) in a sliding manner, an abutting elastic sheet (1004) is mounted between the wedge plates (1003) and the mounting grooves (1002), wedge grooves (1005) are formed in the outer circumference side of the internal thread cylinder (12) in a sleeved mode by the wedge plates (1003), and the driving mechanism (9) acts on the rotating ring (1001).

4. A feed carriage for non-circular and eccentric circular turning of a numerically controlled lathe according to claim 3, characterized in that said driving mechanism (9) comprises driven gears (901) mounted on the outer peripheral side of said rotary ring (1001), adjacent said driven gears (901) being engaged with each other, wherein a polygonal screw block (902) is mounted on top of one of said driven gears (901).

5. A feed carriage for non-circular and eccentric circular turning of a numerically controlled lathe according to claim 1, characterized in that the mounting plate (7) is vertically slidably mounted on the connecting frame (6), and the connecting frame (6) is provided with a transmission assembly (15) for driving the mounting plate (7) to move.

6. The feeding knife rest for non-circular and eccentric circular turning of a numerically controlled lathe according to claim 5, wherein the transmission assembly (15) comprises an adjusting rod (1501) with one end rotatably mounted on the connecting frame (6), a linkage rod (1502) is hinged between the adjusting rod (1501) and the mounting plate (7), and a limiting piece (1503) for releasing limit or limiting the rotation of the adjusting rod (1501) is mounted on the connecting frame (6).

7. The feeding knife rest for non-circular and eccentric circular turning of a numerically controlled lathe according to claim 6, wherein the limiting piece (1503) comprises a driving plate (15031) horizontally installed on the connecting frame (6) in a sliding mode, two posts (15032) are symmetrically formed on the driving plate (15031), movable grooves (15033) are formed on two opposite sides of the adjusting rod (1501) along the length direction of the two opposite sides of the adjusting rod, the two posts (15032) are respectively and slidably tangent to the two movable grooves (15033), a rod body (15034) is horizontally formed on the driving plate (15031), a limiting gear (15033) is installed on the rod body (15034) in a sliding mode, a reset spring (15036) is installed between the limiting gear (15035) and the rod body (15034), and a limiting rack (7) meshed with the limiting gear (15035) is installed on the connecting frame (6).

8. The feeding knife rest for non-circular and eccentric circular turning of a numerical control lathe according to claim 1, characterized in that one end of the mounting rod (5) is hinged on the connecting plate (3), and the linear bearing (16) sleeved on the mounting rod (5) in a sliding way is mounted on the mounting cover (1).

9. The feeding knife rest for non-circular and eccentric circular turning of a numerical control lathe according to claim 1, wherein the mounting rod (5) comprises a sleeve rod (501) hinged with the connecting plate (3) and a sleeve (502) slidably sleeved on the sleeve rod (501), a linear bearing (16) is slidably sleeved on the sleeve (502), two strip-shaped tooth grooves (503) are symmetrically formed in the inner wall of the sleeve (502), two driving gears (504) respectively meshed with the two strip-shaped tooth grooves (503) are rotatably mounted in the sleeve rod (501), a driving motor (505) is mounted on the mounting rod (5), and a linkage piece (506) is mounted between an output shaft of the driving motor (505) and the two driving gears (504).

10. The feeding knife rest for non-circular and eccentric circular turning of a numerically controlled lathe according to claim 9, wherein the linkage piece (506) comprises two groups of synchronization pieces, the synchronization pieces comprise two driving rollers (5061) and a synchronous toothed belt (5063) in transmission connection between the two driving rollers (5061), the synchronous toothed belt (5063) is meshed with the corresponding driving gear (504), a convex rod (5064) is configured on one side surface of the synchronous toothed belt (5063), a linkage frame (5062) is slidably mounted on the sleeve rod (501), the two sleeve rods (501) are slidably tangent in the linkage frame (5062), and one driving roller (5061) is connected with the driving motor (505).