A feeding mechanism and operation process of a high-precision lathe

Abstract

The present invention relates to the field of lathe feeding technology, specifically to a feeding mechanism and operation process of a high-precision lathe, including a pushing mechanism mounting frame, a pushing assembly is arranged under the pushing mechanism mounting frame, and a guide frame assembly is arranged above the pushing mechanism mounting frame, and the beneficial effects are: the pushing frame is driven by a cam guide rail to move backward under the guide frame, so that the rods fall into the fixed guide rails from the guide frame in sequence, and a pushing pad is added to the pushing frame so that when the pushing frame is reset, the rods on the fixed guide rails are directly pushed into the positioning moving frame, and the pushing guide rails arranged on the outer side of the positioning moving frame adopt a design of narrow front and wide back so that the positioning moving frame can continuously clamp the rods when moving so that they are fixed and moved accurately to the claw disk processing parts of the lathe, thereby avoiding position errors caused by the rolling of the rods, and solving the problem that when the rods are pushed by the push plates in the prior art, the round rods are prone to rolling, resulting in difficulty in calibrating the position with the claw disk.

Description

Technical Field

[0001] The invention belongs to the technical field of lathe feeding, and in particular relates to a feeding mechanism and an operation flow of a high-precision lathe. Background Art

[0002] The feeding mechanism of CNC lathe refers to a feeding machine that cooperates with CNC lathes that can process materials in a continuous cycle to realize automatic feeding, thereby improving the processing efficiency and automation of the equipment. The feeder can generally be used to process various types of bars (including various types of round bars, hexagonal bars, hollow bars, etc.). Most of the existing feeders still require additional manual assistance and cannot ensure that the workpiece is directly transported to the processing claw plate. For processing lathes with a high degree of automation, the production efficiency is relatively low and the working effect is not ideal.

[0003] The prior art uses a loading platform to maintain the stability of the workpiece during transportation and uses a push plate to feed the workpiece into the claw plate to improve feeding accuracy. However, there is still a problem that the round bar is prone to rolling when the push plate pushes the bar, making it difficult to align the position with the claw plate.

[0004] Therefore, the present invention proposes a method to solve the problem in the prior art that when the round bar is pushed by a push plate, it is easy to roll and it is difficult to calibrate the position between the claw plate. The positioning of the bar loading can be helped by changing the shape of the push plate and adding a position positioning mobile frame. Summary of the invention

[0005] In view of the deficiencies in the prior art, the object of the present invention is to provide a feeding mechanism and an operating procedure for a high-precision lathe to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a feeding mechanism and operating process of a high-precision lathe, comprising a pushing mechanism mounting frame, a pushing assembly is arranged below the pushing mechanism mounting frame, a material guide frame assembly is arranged above the pushing mechanism mounting frame, the pushing assembly comprises a cam guide rail rotatably mounted on the side wall of the pushing mechanism mounting frame, a pushing frame is arranged on one side of the cam guide rail, the material guide frame assembly comprises a material guide frame fixedly mounted above the side wall of the pushing mechanism mounting frame, and bar limiting slots are evenly distributed on one side of the material guide frame.

[0007] Preferably, a large motor is fixedly installed on the tail end of the rear side wall of the pushing mechanism mounting frame, one end of the rotating shaft of the cam guide rail is fixedly connected to the output shaft of the large motor, the upper end of the pushing frame is slidably connected to the lower end of the guide frame, and limiting rods compatible with the pushing frame are fixedly installed on both sides of the lower end of the guide frame.

[0008] Preferably, a limiting pulley is rotatably mounted on the front end side wall of the pusher rack, a slide rail matching the limiting pulley is arranged on the side wall of the pusher mechanism mounting frame, and the rear end of the pusher rack is movably connected to the inner track of the cam guide rail.

[0009] Preferably, a fixed guide rail is provided below the pusher rack, and the fixed guide rail is fixedly mounted on the side wall of the pusher mechanism mounting frame, and a pusher pad matched with the fixed guide rail is fixedly mounted on the lower end of the pusher rack.

[0010] Preferably, a positioning movable frame is slidably installed on the front side of the pushing mechanism mounting frame, and a limiting track compatible with the positioning movable frame is fixedly installed on the rear side wall of the pushing mechanism mounting frame, a threaded rod is rotatably installed on the inner wall of the limiting track, the inner wall of the positioning movable frame is threadedly connected to the outer surface of the threaded rod, a small motor is fixedly installed on the outer side of the limiting track, and one end of the threaded rod is fixedly connected to the output shaft of the small motor.

[0011] Preferably, arc-shaped clamping plates are symmetrically hingedly installed on the upper and lower sides of the positioning movable frame, a reset elastic plate is movably installed between the connection between the arc-shaped clamping plate and the positioning movable frame, and a pushing guide rail is arranged on the outer side of the positioning movable frame, and the pushing guide rail is fixedly installed on the side surface of the pushing mechanism mounting frame.

[0012] Preferably, the bar limiting slot plate is fixedly mounted on the side wall of the material guide frame, the inner side wall of the bar limiting slot plate is hingedly mounted with a support pad, and a support spring is fixedly mounted between the inner side wall of the support pad and the side wall of the bar limiting slot plate.

[0013] Preferably, an extrusion cam is arranged above the material guide frame, and the extrusion cam is rotatably mounted on the side wall of the material pushing mechanism mounting frame, and a belt assembly is movably mounted between the outer surface of the rotating shaft of the extrusion cam and the outer surface of the rotating shaft of the cam guide rail.

[0014] Preferably, a feeding trough is fixedly mounted on the upper side wall of the material guide rack, and a movable groove matched with the extrusion cam is arranged on the top of the material guide rack.

[0015] The present invention also proposes an operation process of a feeding mechanism of a high-precision lathe, comprising the following steps:

[0016] Step 1: Place the bar material into the guide rack through the loading chute;

[0017] Step 2: Start the large motor to drive the cam guide rail to rotate, so that the pusher rack at the bottom of the guide rack retreats, and the extrusion cam at the top of the guide rack is driven to rotate and press the bar material down to drop into the fixed guide rail;

[0018] Step 3: The cam guide rail continues to rotate and reset to make the pusher rack move forward, so that one end of the bar material is pushed into the positioning moving rack;

[0019] Step 4: Start the small motor, and the positioning moving frame moves in the push guide rail to fix the bar material and push the bar material to the lathe claw plate position accurately.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The cam guide rail drives the pusher rack to move backward under the guide rack, so that the rods fall from the guide rack into the fixed guide rail in sequence, and a pusher pad is added to the pusher rack so that when the pusher rack is reset, the rods on the fixed guide rail are directly pushed into the positioning movable rack. The pusher guide rail arranged on the outside of the positioning movable rack adopts a design of narrow front and wide back, so that the positioning movable rack can continuously clamp the rods when moving, so that it is fixed and moved and accurately pushed to the claw plate processing parts of the lathe, avoiding position errors caused by rolling of the rods, and solving the problem that when the rods are pushed by the push plate in the prior art, the round rods are prone to rolling, resulting in difficulty in calibrating the position with the claw plate, and the positioning of the rod loading can be helped by changing the shape of the push plate and adding a position positioning movable rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the empty material state structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the back structure of the present invention;

[0024] Figure 3 It is a schematic structural diagram of the material feeding state of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the material pushing state of the present invention;

[0026] Figure 5 This is a schematic diagram of the push material vacant structure of the present invention;

[0027] Figure 6 It is a side structural schematic diagram of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the positioning movable frame of the present invention in a material pushing state;

[0029] Figure 8 It is a schematic diagram of the structure of the positioning mobile frame of the present invention;

[0030] Fig. 9 It is a schematic structural diagram of the clamping state of the positioning movable frame of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of the pusher assembly of the present invention;

[0032] Fig.11 It is a schematic diagram of the operation flow of the present invention.

[0033] In the figure: 1. Pushing mechanism mounting frame; 2. Pushing assembly; 21. Cam guide rail; 211. Large motor; 22. Pushing frame; 221. Pushing pad; 222. Limiting pulley; 23. Fixed guide rail; 24. Positioning movable frame; 241. Arc clamp; 242. Reset elastic plate; 25. Threaded rod; 26. Small motor; 27. Pushing guide rail; 3. Guide frame assembly; 31. Guide frame; 311. Loading trough; 312. Limiting rod; 32. Bar material limiting slot plate; 321. Support pad; 322. Support spring; 33. Extrusion cam. DETAILED DESCRIPTION

[0034] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1

[0036] See also Figures 1 to 10 The present invention provides a technical solution: comprising a pusher mechanism mounting frame 1, a pusher assembly 2 is arranged below the pusher mechanism mounting frame 1, a guide frame assembly 3 is arranged above the pusher mechanism mounting frame 1, the pusher assembly 2 comprises a cam guide rail 21 rotatably mounted on the side wall of the pusher mechanism mounting frame 1, a pusher frame 22 is arranged on one side of the cam guide rail 21, the guide frame assembly 3 comprises a guide frame 31 fixedly mounted above the side wall of the pusher mechanism mounting frame 1, a bar material limiting slot plate 32 is evenly distributed on one side of the guide frame 31, a large motor 211 is fixedly mounted at the rear end of the rear side wall of the pusher mechanism mounting frame 1, one end of the rotating shaft of the cam guide rail 21 is connected to the large motor 21 1 is fixedly connected, the upper end of the pusher frame 22 is slidably connected to the lower end of the guide frame 31, and the lower ends of the guide frame 31 are respectively fixedly installed with limit rods 312 adapted to the pusher frame 22, and the front end side wall of the pusher frame 22 is rotatably installed with a limit pulley 222, and the side wall of the pusher mechanism mounting frame 1 is provided with a slide rail adapted to the limit pulley 222, and the rear end of the pusher frame 22 is movably connected to the inner track of the cam guide rail 21, and a fixed guide rail 23 is provided below the pusher frame 22, and the fixed guide rail 23 is fixedly installed on the side wall of the pusher mechanism mounting frame 1, and a pusher pad 221 adapted to the fixed guide rail 23 is fixedly installed at the lower end of the pusher frame 22;

[0037] In this embodiment, the rods are stored in the guide rack 31, and the large motor 211 drives the cam guide rail 21 to rotate, so that the push rack 22 moves forward and backward under the drive of the cam guide rail 21, wherein the limit pulley 222 installed on the push rack 22 moves on the slide rail to limit the movement of the push rack 22 to ensure that the push rack 22 must move forward and backward. As the cam guide rail 21 rotates counterclockwise, the push rack 22 retreats and moves away from the bottom of the guide rack 31, so that the lowest rod at the bottom of the guide rack 31 falls into the fixed guide rail 23, and as the cam guide rail 21 continues to rotate, the push rack 22 moves forward again. Reset and re-seal the guide rack 31. At this time, the push pad 221 moves with the push rack 22 to directly push the rods in the fixed guide rail 23 into the positioning movable rack 24. It is worth noting that the limit rod 312 limits the movement of the push rack 22 and can prevent the second-to-last rod from rolling down when the push rack 22 retreats. This solves the problem in the prior art that when the push plate pushes the rod, the round rod is prone to rolling, making it difficult to align the position with the claw plate. The positioning of the rod loading can be helped by changing the shape of the push plate and adding a position positioning movable rack.

[0038] Embodiment 2

[0039] See also Figures 1 to 10 On the basis of the first embodiment, in order to realize the accurate pushing of the bar material to the lathe processing parts, the present embodiment further proposes that a positioning and moving frame 24 is slidably installed on the front side of the pushing mechanism mounting frame 1, and a limiting track adapted to the positioning and moving frame 24 is fixedly installed on the rear side wall of the pushing mechanism mounting frame 1, and a threaded rod 25 is rotatably installed on the inner wall of the limiting track, and the inner wall of the positioning and moving frame 24 is threadedly connected with the outer surface of the threaded rod 25, and a small motor 26 is fixedly installed on the outer side of the limiting track, and one end of the threaded rod 25 is fixedly connected with the output shaft of the small motor 26, and the upper and lower sides of the positioning and moving frame 24 are symmetrically hingedly installed with arc-shaped clamping plates 241, and a reset elastic plate 242 is movably installed between the connection between the arc-shaped clamping plate 241 and the positioning and moving frame 24, and a pushing guide rail 27 is arranged on the outer side of the positioning and moving frame 24, and the pushing guide rail 27 is fixedly installed on the side surface of the pushing mechanism mounting frame 1;

[0040] In this embodiment, the front end of the bar is pushed into the positioning movable frame 24, and the small motor 26 is started to drive the threaded rod 25 to rotate, so that the positioning movable frame 24 moves forward with the cooperation of the limit track to push the bar to the processing part of the lathe. The pushing guide rail 27 adopts a design that is narrow in front and wide in the back, so that when the positioning movable frame 24 moves in the pushing guide rail 27, the arc clamping plate 241 is pressed and closed to gradually clamp the bar, which can ensure that the bar will not be displaced and improve the accuracy of pushing and feeding. The reset elastic plate 242 rebounds when the positioning movable frame 24 is reset to make the arc clamping plate 241 expand, which is convenient for subsequent bar materials to be pushed in. This further solves the problem that when the prior art pushes the bar by the push plate, the round bar is prone to rolling, which makes it difficult to calibrate the position with the claw plate. The positioning of the bar loading can be helped by changing the shape of the push plate and adding a position positioning movable frame.

[0041] Embodiment 3

[0042] See also Figures 1 to 10 On the basis of the second embodiment, in order to realize that the bar material can be smoothly and accurately pushed directly from the fixed guide rail 23 into the positioning movable frame 24 by the pushing pad 221, this embodiment also proposes that a connecting guide rail is added between the fixed guide rail 23 and the positioning movable frame 24, and the connecting guide rail is fixedly installed on the side wall of the pushing mechanism mounting frame 1, and its installation height is flush with the fixed guide rail 23 and the positioning movable frame 24. An open groove is provided at the bottom of the connecting guide rail, and rollers are arranged at the bottom of the connecting guide rail. Multiple groups of rollers are arranged and are rotatably installed on the side wall of the pushing mechanism mounting frame 1 in sequence, and the upper end of the roller passes through the open groove at the bottom of the connecting guide rail;

[0043] In this embodiment, a connecting rail is provided between the fixed rail 23 and the positioning movable frame 24 to ensure that the moving trajectory of the rod will not deviate when the rod is pushed by the pushing pad 221, thereby playing a role in assisting the positioning and coordination with the positioning movable frame 24. At the same time, the roller at the bottom of the connecting rail can reduce the friction force of the pushing pad 221 pushing the rod, thereby increasing the inertia of the rod forward when being pushed, and allowing the rod to smoothly enter the positioning movable frame 24. This further solves the problem in the prior art that when the rod is pushed by the push plate, the round rod is prone to rolling, resulting in difficulty in aligning the position with the claw plate. The positioning of the rod loading can be assisted by changing the shape of the push plate and adding a position positioning movable frame.

[0044] Embodiment 4

[0045] See also Figures 1 to 10On the basis of the third embodiment, in order to realize that the positioning movable frame 24 has a clamping force on the bar material during the initial movement and increase the friction force of the positioning movable frame 24 on the bar material during the later movement so that it will not be displaced when pushing the material, this embodiment also proposes that a wedge-shaped fixing pad is added on the inner side of the arc-shaped clamping plate 241, and an upper corner of the wedge-shaped fixing pad is rotatably connected to the inner wall of the arc-shaped clamping plate 241, and the oblique surface of the wedge-shaped fixing pad is symmetrically provided with anti-slip grooves, and an elastic bending plate is added between the outer side of the wedge-shaped fixing pad and the side wall of the arc-shaped clamping plate 241;

[0046] In this embodiment, the wedge-shaped fixed pad has a certain squeezing effect on the surface of the rod when the positioning movable frame 24 initially moves, so that the rod can move with the positioning movable frame 24. The arc-shaped clamping plate 241 is compressed when the positioning movable frame 24 moves inside the pushing guide rail 27. At this time, the wedge-shaped fixed pad is squeezed and rotated, so that the inclined surface with anti-slip grooves contacts the surface of the rod, increasing the friction so that the rod is locked and is not easy to roll when it is pushed for feeding. Similarly, the elastic bending plate can rebound when the arc-shaped clamping plate 241 is reset to support the reset of the wedge-shaped fixed pad, thereby facilitating the insertion of the rod. This further solves the problem in the prior art that when the round rod is pushed by the push plate, it is easy to roll, resulting in difficulty in aligning the position with the claw plate. The positioning of the rod loading can be helped by changing the shape of the push plate and adding a position positioning movable frame.

[0047] Embodiment 5

[0048] See also Figures 1 to 10 On the basis of the fourth embodiment, in order to realize the auxiliary unloading of the bar material, the present embodiment further proposes that the bar material limiting slot plate 32 is fixedly mounted on the side wall of the guide frame 31, the inner side wall of the bar material limiting slot plate 32 is hingedly mounted with a support pad 321, a support spring 322 is fixedly mounted between the inner side wall of the support pad 321 and the side wall of the bar material limiting slot plate 32, an extrusion cam 33 is arranged above the guide frame 31, the extrusion cam 33 is rotatably mounted on the side wall of the pushing mechanism mounting frame 1, a belt assembly is movably mounted between the outer surface of the rotating shaft of the extrusion cam 33 and the outer surface of the rotating shaft of the cam guide rail 21, a feeding trough 311 is fixedly mounted on the upper side wall of the guide frame 31, and a movable groove adapted to the extrusion cam 33 is arranged on the top of the guide frame 31;

[0049] In this embodiment, the loading slot 311 facilitates the entry of the rods into the guide frame 31. The support pad 321 on the inner side of the rod limiting slot plate 32 supports and distributes the pressure on the rods in turn under the elastic support of the support spring 322, so that it does not generate accumulation pressure on the bottom, which is convenient for the rods to fall into the fixed guide rail 23 in turn in the later stage. The fixed guide rail 23 is driven to rotate by the cam guide rail 21 through the belt assembly, and cooperates with the movement of the pushing frame 22 to squeeze the upper rods so that the rods pass through the support pad 321 in turn. The bottom rods are discharged into the fixed guide rail 23 and wait to be pushed for feeding. This further solves the problem in the prior art that when the round rods are pushed by the push plate, it is easy to roll, resulting in difficulty in aligning the position with the claw plate. The positioning of the rod loading can be helped by changing the shape of the push plate and adding a position positioning mobile frame.

[0050] Embodiment 6

[0051] See also Figures 1 to 10 Based on the fifth embodiment, this embodiment further proposes an operation flow of a feeding mechanism of a high-precision lathe, comprising the following steps:

[0052] Step 1: Place the bar material into the guide rack 31 through the loading trough 311;

[0053] Step 2: Start the large motor 211 to drive the cam guide rail 21 to rotate, so that the pusher rack 22 at the bottom of the guide rack 31 moves backward, and the extrusion cam 33 at the top of the guide rack 31 is driven to rotate and press the bar material to drop into the fixed guide rail 23;

[0054] Step 3: The cam guide rail 21 continues to rotate and reset to move the pusher frame 22 forward, so that one end of the bar material is pushed into the positioning movable frame 24;

[0055] Step 4: Start the small motor 26, and the positioning moving frame 24 moves in the pushing guide rail 27 to fix the bar material and push the bar material to the lathe claw plate position accurately.

[0056] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A feeding mechanism for a high-precision lathe, comprising a pusher mechanism mounting frame (1), characterized in that: A material pushing assembly (2) is arranged below the material pushing mechanism mounting frame (1), a material guide frame assembly (3) is arranged above the material pushing mechanism mounting frame (1), the material pushing assembly (2) comprises a cam guide rail (21) rotatably mounted on the side wall of the material pushing mechanism mounting frame (1), a material pushing frame (22) is arranged on one side of the cam guide rail (21), the material guide frame assembly (3) comprises a material guide frame (31) fixedly mounted above the side wall of the material pushing mechanism mounting frame (1), and bar limiting slot plates (32) are evenly distributed on one side of the material guide frame (31); A fixed guide rail (23) is provided below the material pushing frame (22), and the fixed guide rail (23) is fixedly mounted on the side wall of the material pushing mechanism mounting frame (1), and a material pushing pad (221) adapted to the fixed guide rail (23) is fixedly mounted at the lower end of the material pushing frame (22); A positioning movable frame (24) is slidably mounted on the front side of the push mechanism mounting frame (1), a limiting track matched with the positioning movable frame (24) is fixedly mounted on the rear side wall of the push mechanism mounting frame (1), a threaded rod (25) is rotatably mounted on the inner wall of the limiting track, the inner wall of the positioning movable frame (24) is threadedly connected to the outer surface of the threaded rod (25), a small motor (26) is fixedly mounted on the outer side of the limiting track, and one end of the threaded rod (25) is fixedly connected to the output shaft of the small motor (26); The upper and lower sides of the positioning movable frame (24) are symmetrically hingedly mounted with arc-shaped clamping plates (241), and a reset elastic plate (242) is movably mounted between the connection between the arc-shaped clamping plates (241) and the positioning movable frame (24). A material pushing guide rail (27) is arranged on the outer side of the positioning movable frame (24), and the material pushing guide rail (27) is fixedly mounted on the side surface of the material pushing mechanism mounting frame (1).

2. The feeding mechanism of a high-precision lathe according to claim 1, characterized in that: A large motor (211) is fixedly mounted on the rear end of the side wall of the push mechanism mounting frame (1); one end of the rotating shaft of the cam guide rail (21) is fixedly connected to the output shaft of the large motor (211); the upper end of the push frame (22) is slidably connected to the lower end of the guide frame (31); and limiting rods (312) adapted to the push frame (22) are fixedly mounted on both sides of the lower end of the guide frame (31).

3. The feeding mechanism of a high-precision lathe according to claim 2, characterized in that: A limiting pulley (222) is rotatably mounted on the front side wall of the pusher rack (22), a slide rail matching the limiting pulley (222) is disposed on the side wall of the pusher mechanism mounting frame (1), and a rear end of the pusher rack (22) is movably connected to the inner track of the cam guide rail (21).

4. The feeding mechanism of a high-precision lathe according to claim 1, characterized in that: The bar material limiting slot plate (32) is fixedly mounted on the side wall of the material guide frame (31); a support pad (321) is hingedly mounted on the inner side wall of the bar material limiting slot plate (32); and a support spring (322) is fixedly mounted between the inner side wall of the support pad (321) and the side wall of the bar material limiting slot plate (32).

5. The feeding mechanism of a high-precision lathe according to claim 4, characterized in that: An extrusion cam (33) is arranged above the material guide frame (31), and the extrusion cam (33) is rotatably mounted on the side wall of the material pushing mechanism mounting frame (1), and a belt assembly is movably mounted between the outer surface of the rotating shaft of the extrusion cam (33) and the outer surface of the rotating shaft of the cam guide rail (21).

6. The feeding mechanism of a high-precision lathe according to claim 5, characterized in that: A material loading trough (311) is fixedly mounted on the upper side wall of the material guide frame (31), and a movable groove matching the extrusion cam (33) is provided on the top of the material guide frame (31).

7. According to the feeding mechanism of a high-precision lathe according to any one of claims 1 to 6, an operation flow of the feeding mechanism of a high-precision lathe is proposed, characterized in that: The following steps are involved: Step 1: Load the bar material through the loading trough (311) and place it in the guide rack (31); Step 2: Start the large motor (211) to drive the cam guide rail (21) to rotate, so that the pusher frame (22) at the bottom of the guide frame (31) moves backward, and the extrusion cam (33) at the top of the guide frame (31) is driven to rotate and press the bar material to drop into the fixed guide rail (23); Step 3: The cam guide rail (21) continues to rotate and reset to move the pusher frame (22) forward, so that one end of the bar material is pushed into the positioning movable frame (24); Step 4: Start the small motor (26), and the positioning moving frame (24) moves in the pusher guide rail (27) to fix the bar material and push the bar material to the lathe claw plate position accurately.

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