A machining process and device for a one-piece light-weight rear triangle of a vehicle frame

Abstract

The application relates to a processing technology for an integrated lightweight rear triangle of a vehicle frame, which comprises the following steps: step one, preparation of a rear triangle metal material of the vehicle frame and a mold, the rear triangle metal material of the vehicle frame needs to be heated to a liquid state or a semi-solid state, meanwhile, the mold is preheated, the mold cavity can integrally form the rear triangle of the vehicle frame, the rear triangle of the vehicle frame comprises a rear upper fork, a rear lower fork and a hook claw; step two, pouring, cooling and solidification; step three, pipe extraction processing of the formed piece; step four, bending of the formed piece to a triangular structure; and step five, hydraulic water expansion and numerical control processing of the formed piece. The application can integrally form the rear upper fork, the rear lower fork and the hook claw, does not need welding, improves the lightness of the product, reduces hidden troubles such as deformation and false welding caused by welding, controls the thickness of the product, reduces the weight of the product, realizes the lightness of the product, saves materials, and reduces the cost.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of bicycle frames, in particular to an integrated lightweight frame rear triangle machining process and a machining device thereof. BACKGROUND

[0002] A lightweight bicycle refers to reducing the weight of the bicycle as much as possible under the premise of ensuring the strength and rigidity of the bicycle, thereby improving the riding efficiency and performance, and using lightweight high-strength materials such as carbon fiber, aluminum alloy, titanium alloy and the like. Compared with traditional steel materials, these materials can greatly reduce the weight of the bicycle.

[0003] In the industry, the rear upper fork, the rear lower fork and the hook claw are generally produced separately, and then combined into one through welding. The welded product has a false welding safety hazard, and the product welding position leaves a welding scar, affecting the appearance of the product. The uneven heat distribution caused by welding may cause deformation of the frame rear triangle, thereby affecting the assembly of the frame. Moreover, the microstructure of the heat-affected zone of the welded joint is very uneven, there is stress concentration, and the welding corrosion of the welded joint becomes the failure source of the entire frame. These welded joints will be damaged in advance during subsequent quality testing and use, have low fatigue resistance and damage resistance, have short service life, and bring safety hazards to riders.

[0004] In view of the related technologies in the above, an integrated lightweight frame rear triangle machining process and a machining device thereof are provided to solve the above problems. SUMMARY

[0005] In order to improve the problems that the welding process may cause product deformation, affect assembly, easily cause deformation at the welding position, reduce the strength and durability of the frame and the like, the application provides an integrated lightweight frame rear triangle machining process and a machining device thereof.

[0006] The integrated lightweight frame rear triangle machining process and the machining device thereof provided by the application adopt the following technical solutions:

[0007] An integrated lightweight frame rear triangle machining process comprises the following process steps:

[0008] Step 1, frame rear triangle metal material and mold preparation, the frame rear triangle metal material needs to be heated to a liquid or semi-solid state, and the mold is preheated at the same time. The mold cavity can integrally form the frame rear triangle. The frame rear triangle comprises a rear upper fork, a rear lower fork and a hook claw;

[0009] Step 2, pouring and cooling and solidifying, the frame rear triangle metal liquid is poured into the mold cavity, the mold is closed and a certain pressure is applied; after cooling and solidifying in the mold, the mold is opened and the formed piece is taken out;

[0010] Step three, the tube is extracted from the forming piece, the forming piece is preheated to a suitable temperature, and the two tail ends of the heated forming piece are stretched on the tube extraction device. During this process, the wall thickness of the two tail ends of the forming piece gradually decreases, and the outer diameter and length correspondingly increase. By controlling the stretching force and speed, the wall thickness of the two tail ends of the forming piece can be accurately adjusted, that is, the wall thickness adjustment of the rear upper fork and the rear lower fork is realized.

[0011] Step four, the forming piece is bent to a triangular structure. The forming piece after tube extraction is processed by a bending processing device to form a triangular structure to meet the shape requirements of the triangular frame.

[0012] Step five, the forming piece is processed by hydraulic water expansion and numerical control processing. The hydraulic water expansion can provide uniform pressure distribution, reduce local stress concentration and deformation of the forming piece, process the forming piece into a square shape, and ensure the accuracy and performance of the forming piece through numerical control processing.

[0013] By adopting the above technical scheme, the rear upper fork, the rear lower fork and the hook are integrally formed, without welding, which improves the lightness of the product, reduces the deformation and false welding caused by welding, controls the thickness of the product, reduces the weight of the product, realizes the light weight of the product, saves materials, reduces costs, reduces three parts to one part, reduces welding assembly and management process, makes production and assembly simpler and more efficient, improves production speed and quality, and saves production and management costs.

[0014] Optionally, in step two, the temperature and pouring speed of the rear triangular metal liquid of the frame need to be accurately controlled to ensure that the metal liquid can uniformly fill the mold.

[0015] A processing device for an integrated lightweight rear triangular frame, comprising:

[0016] A processing table, adjustable bending assemblies are arranged on the top of the processing table on both sides, the bending assemblies are arranged in a triangular shape, and are used for triangular bending of the rear triangular frame of the vehicle;

[0017] A bearing seat is arranged on the processing table, the processing table can move the bearing seat between the two bending assemblies, and a bearing groove is arranged on the top of the bearing seat and used for bearing the rear triangular frame of the vehicle;

[0018] A supporting assembly is arranged in front of the bearing seat, the supporting assembly is used for supporting the rear triangular frame of the vehicle after demolding, and the supporting assembly can change the supporting angle according to the bending angle of the rear triangular frame of the vehicle; wherein,

[0019] The supporting assembly comprises a supporting plate, a plurality of mounting frames, an adjusting rod and a supporting wheel, the supporting plate is fixedly connected in front of the bearing seat, the mounting frames are respectively fixed on the two sides of the supporting plate, the mounting frames are provided with notches, one end of the adjusting rod is rotatably arranged in the notch, and the supporting wheel is arranged on the top of the other end of the adjusting rod and supports the rear upper fork and the rear lower fork at the rear triangle of the vehicle frame.

[0020] By adopting the above technical scheme, the unbent rear triangle of the vehicle frame is placed at the bearing groove, and the bearing seat moves from outside to inside under the action of the bending assembly, so that the unbent rear triangle of the vehicle frame is gradually bent to form a triangular shape, and in the process of gradual bending, the supporting assembly is matched and supported to prevent the rear upper fork and the rear lower fork from being overloaded when being bent, so that deformation occurs at the part integrally formed with the hook, which affects the damage of the integrally formed part, reduces the strength of the hook in the use process, and the adjusting rod is used for horizontal angle adjustment during the bending process, so that the supporting wheel can match the change of the gradually bent angle of the rear triangle of the vehicle frame and stably support the rear upper fork and the rear lower fork, thereby reducing the overload and improving the stability of the rear triangle of the vehicle frame during bending.

[0021] Optionally, a driving motor is arranged through the top of the mounting frame, the output end of the driving motor extends into the notch and is connected with the top end of the adjusting rod, and the driving motor is used for driving the adjusting rod to change the horizontal angle.

[0022] By adopting the above technical scheme, the output end of the driving motor drives the adjusting rod to cooperate with the position and angle adjustment of the bending process of the rear triangle of the vehicle frame.

[0023] Optionally, the bending assembly comprises a plurality of positioning frames and bending wheels, the positioning frames are arranged in a triangular shape two by two on the machining table, and spaces for the movement of the bearing seat are left between the positioning frames, and the bending wheels are arranged at equal intervals on the positioning frames and are used for bending the rear triangle of the vehicle frame.

[0024] By adopting the above technical scheme, the bending wheels are arranged in the two positioning frames, and when the unbent rear triangle of the vehicle frame moves, the bending wheels are used for bending the rear upper fork and the rear lower fork relative to the hook, and after reaching the required angle, the bearing seat stops moving and returns to the initial position.

[0025] Optionally, a positioning column is arranged on the top of the bearing groove and corresponds to the hook arc-shaped opening of the rear triangle of the vehicle frame.

[0026] By adopting the technical scheme, the positioning column is engaged with the hook-shaped arc-shaped opening at the bearing groove to limit the initial position and avoid falling from the bearing groove.

[0027] Optionally, the limiting assembly is arranged on the bearing seat and is used for limiting the hook of the rear triangular frame in the bearing groove.

[0028] By adopting the technical scheme, the limiting disc is driven to descend by the output end of the cylinder to keep the stability of the rear triangular frame during bending and avoid the horizontal angle deviation of the hook during the bending process, thereby affecting the stress of the hook during the bending process.

[0029] Optionally, the bottom of the limiting disc is provided with an elastic pad used for buffering the extrusion force of the hook of the rear triangular frame.

[0030] By adopting the technical scheme, the protection of the hook is formed to reduce the deformation of the hook during the bending process.

[0031] Optionally, the top of the processing table is provided with a moving groove for the bottom of the bearing seat, the moving groove is rotatably connected with a lead screw, the bottom of the bearing seat extends into the moving groove and is provided with a moving block, the lead screw penetrates through the moving block and is threadedly connected with the moving block.

[0032] By adopting the technical scheme, the rotation of the lead screw can realize the movement of the moving block in the moving groove, thereby realizing the position movement of the bearing seat to facilitate the bending operation.

[0033] Optionally, the rear end of the processing table is provided with a rotary motor penetrating through the moving groove, the output end of the rotary motor is connected with one end of the lead screw and is used for driving the rotation of the lead screw.

[0034] By adopting the technical scheme, the output end of the rotary motor drives the rotation of the lead screw to realize the position movement of the bearing seat to facilitate the bending.

[0035] In summary, the present application has at least one of the following beneficial technical effects:

[0036] 1. The present application can realize the integrated molding of the rear upper fork, the rear lower fork and the hook, without welding, improve the lightness of the product, reduce the deformation and false welding caused by welding and other hidden troubles, control the thickness of the product, reduce the weight of the product, realize the light weight of the product, save materials, reduce costs, reduce the welding assembly and management process from three parts to one part, make the production and assembly simpler and more efficient, improve the production speed and quality, and save the production management cost;

[0037] 2. In the process of gradually bending the rear triangular frame, the supporting assembly is matched and supported to avoid overloading of the rear upper fork and the rear lower fork during bending, which may cause deformation in the integrated molding part with the hook, affect the integrated molding part, reduce the strength of the hook during use, and adjust the horizontal angle of the adjusting rod during the bending process to make the supporting wheel cooperate with the change of the bending angle of the rear triangular frame to stably support the rear upper fork and the rear lower fork, reduce the overloading, and improve the stability of the rear triangular frame during bending;

[0038] 3. The limiting assembly keeps the stability of the rear triangular frame during bending to avoid the horizontal angle deviation of the hook during the bending process, which affects the stress of the hook during the bending process and improves the stability of the whole during the bending process. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a schematic view of the integrated molding (not bent) of the rear triangular frame of the one-piece light weight rear triangular frame processing technology provided by the present application.

[0040] Figure 2 is a schematic view of the integrated molding (bent state) of the rear triangular frame of the one-piece light weight rear triangular frame processing technology provided by the present application.

[0041] Figure 3 is a three-dimensional view of the processing device of the one-piece light weight rear triangular frame provided by the present application.

[0042] Figure 4 is Figure 3 the enlarged schematic view of the structure at A in the figure.

[0043] Figure 5 is Figure 3 the enlarged schematic view of the structure at B in the figure.

[0044] In the figure: 1, the rear triangle of the frame; 11, the upper rear fork; 12, the lower rear fork; 13, the hook claw; 2, the processing table; 21, the moving groove; 22, the screw rod; 23, the rotary motor; 3, the bending assembly; 31, the positioning frame; 32, the bending wheel; 4, the bearing seat; 41, the bearing groove; 42, the positioning column; 5, the abutting assembly; 51, the support plate; 52, the mounting frame; 53, the adjusting rod; 54, the abutting wheel; 55, the driving motor; 6, the limiting assembly; 61, the support frame; 62, the air cylinder; 63, the limiting disc; 64, the elastic pad. DETAILED DESCRIPTION

[0045] The following will be described in detail with reference to the accompanying drawings. Figures 1-5 The present application is further described in detail.

[0046] Reference Figures 1-2 The embodiment of the present application discloses a one-piece light-weight rear triangle of frame processing technology, which comprises the following process steps:

[0047] Step one, the rear triangle of frame metal material and mold preparation, the rear triangle of frame metal material needs to be heated to liquid or semi-solid state, and the mold is preheated at the same time, the mold cavity can integrally form the rear triangle of frame, which includes the upper rear fork, the lower rear fork and the hook claw;

[0048] Step two, pouring and cooling and solidifying, the rear triangle of frame metal liquid is poured into the mold cavity, the mold is closed and a certain pressure is applied; after cooling and solidifying in the mold, the mold is opened and the formed piece is taken out;

[0049] Step three, the formed piece is processed by pipe drawing, the formed piece is preheated to an appropriate temperature, and the two tail ends of the formed piece after heating are stretched by the stretching device on the pipe drawing device, in this process, the wall thickness of the two tail ends of the formed piece gradually decreases, and the outer diameter and length correspondingly increase, by controlling the force and speed of stretching, the wall thickness of the two tail ends of the formed piece can be accurately adjusted, that is, the wall thickness adjustment of the pipe wall of the upper rear fork and the lower rear fork is realized;

[0050] Step four, the formed piece is bent to a triangular structure, the formed piece after pipe drawing is processed by the bending processing device, and a triangular structure is formed to meet the shape requirement of the triangular frame;

[0051] Step five, the formed piece is processed by hydraulic water expansion and numerical control, the uniform pressure distribution can be provided by the hydraulic water expansion, the local stress concentration and deformation of the formed piece are reduced, the formed piece is processed into a square shape, and the accuracy and performance of the formed piece are ensured by numerical control processing.

[0052] In step two, the temperature and pouring speed of the rear triangle of frame metal liquid need to be accurately controlled to ensure that the metal liquid can uniformly fill the mold.

[0053] The integrated rear triangle of the light-weight frame can be formed without welding, the weight of the product is reduced, the deformation and false welding caused by welding are reduced, the thickness of the product is controlled, the weight of the product is reduced, the light-weight product is realized, the material is saved, the cost is reduced, the three parts are reduced to one part, the welding assembly and management process are reduced, the production and assembly are simpler and more efficient, the production speed and quality are improved, and the production and management cost is saved.

[0054] Reference Figures 3-5 A processing device for an integrated light-weight frame rear triangle, comprising: a processing table, a bearing seat and a supporting assembly.

[0055] The top of the processing table is provided with adjustable bending assemblies on both sides, the bending assemblies are arranged in a triangular shape, and are used for triangular bending of the frame rear triangle; the bearing seat is arranged on the processing table, the bearing seat can move between the two bending assemblies, the top of the bearing seat is provided with a bearing groove for bearing the frame rear triangle;

[0056] The supporting assembly is arranged in front of the bearing seat, and is used for supporting the demolded frame rear triangle; the supporting assembly can change the supporting angle according to the bending angle of the frame rear triangle; wherein the supporting assembly comprises a supporting plate, a plurality of mounting frames, an adjusting rod and a supporting wheel, the supporting plate is fixedly connected in front of the bearing seat, the mounting frames are respectively fixed on both sides of the supporting plate, the mounting frames are provided with notches, one end of the adjusting rod is rotatably arranged in the notch, and the supporting wheel is arranged on the top of the other end of the adjusting rod and supports the rear upper fork and the rear lower fork of the frame rear triangle.

[0057] The unbent frame rear triangle is placed in the bearing groove, the bearing seat moves from outside to inside between the bending assemblies, so that the unbent frame rear triangle is gradually bent under the action of the bending assemblies, forming a triangular shape, and in the process of gradual bending, the supporting assembly is matched and supported to prevent the rear upper fork and the rear lower fork from being overloaded when being bent, causing deformation at the position of the integrated hook, affecting the integrated position, reducing the strength of the hook in use, and in the bending process, the horizontal angle of the adjusting rod is adjusted, so that the supporting wheel can match the change of the bending angle of the frame rear triangle, stably support the rear upper fork and the rear lower fork, reduce the overload, and improve the stability of the frame rear triangle when being bent.

[0058] In this embodiment, more specifically, the top of the mounting frame is provided with a driving motor, the output end of the driving motor extends into the notch and is connected with the top end of the adjusting rod, and is used for driving the horizontal angle of the adjusting rod to change, the output end of the driving motor drives the adjusting rod to adjust the position and angle in cooperation with the bending process of the frame rear triangle, and is used in cooperation.

[0059] In this embodiment, more specifically, the bending assembly includes a plurality of positioning frames and bending wheels. The positioning frames are arranged in pairs in a triangle on the processing table. The positioning frames can be adjusted in angle and fixed on the processing table to adapt to different triangle ranges. Space for the bearing seat to move is left between the two positioning frames. A plurality of bending wheels are arranged at equal intervals on the positioning frames for bending the rear triangle of the frame. A plurality of bending wheels are installed in the two positioning frames. When the unbent rear triangle of the frame moves, the upper fork and the chain fork are bent relative to the hook claws by the bending wheels, and after reaching the required angle, the bearing seat stops moving and returns to the initial position.

[0060] In this embodiment, more specifically, a positioning column is provided at the top of the bearing slot corresponding to the arc-shaped opening of the hook of the rear triangle of the frame. The positioning column fits into the arc-shaped opening of the hook at the bearing slot to define the initial position and prevent it from falling from the bearing slot.

[0061] In this embodiment, more specifically, it also includes a limit assembly, which is arranged on the bearing seat. The limit assembly is used to limit the hook of the rear triangle of the frame in the bearing groove. The limit assembly includes a support frame, a cylinder and a limit disc. The support frame is arranged on the bearing seat, and the cylinder is arranged on the support frame. The limit disc is fixedly connected to the output end of the cylinder above the corresponding bearing groove, and is used to limit the hook of the rear triangle of the frame. In order to protect the integrally formed part of the hook during the bending process, the limit disc is driven down by the output end of the cylinder to maintain the stability of the rear triangle of the frame during bending, and to avoid horizontal angle deviation at the hook during the bending process, which affects the force applied to the hook during the bending process.

[0062] In this embodiment, more specifically, an elastic pad is provided at the bottom of the limiting disc, which is used to buffer the extrusion force of the limit disc on the hook of the rear triangle of the frame, thereby protecting the hook and reducing deformation of the hook during bending.

[0063] In this embodiment, more specifically, a movable groove is provided at the top of the processing table for the bottom of the supporting seat, and a lead screw is rotatably connected in the movable groove. A movable block is provided at the bottom of the supporting seat and extends in the movable groove. The lead screw passes through the movable block and is threadedly connected to the movable block. The movement of the movable block in the movable groove is achieved by rotating the lead screw, thereby achieving the position movement of the supporting seat for convenient bending operation. A rotating motor is provided at the rear end of the processing table for passing through the movable groove, and the output end of the rotating motor is connected to one end of the lead screw for driving the lead screw to rotate. The output end of the rotating motor drives the lead screw to rotate, thereby achieving the position movement of the supporting seat for coordinated bending.

[0064] The implementation principle of the processing device of the integrated lightweight rear triangle of a vehicle frame is as follows: the unbent rear triangle of the vehicle frame is placed at the bearing groove, the bearing seat is moved from outside to inside of the bending assembly, the unbent rear triangle of the vehicle frame is gradually bent under the action of the bending assembly to form a triangular shape, and in the process of gradually bending, the abutting assembly is matched and abutted to protect, in the bending process, the horizontal angle is adjusted through the adjusting rod, the abutting wheel can match the change of the gradually bending angle of the rear triangle of the vehicle frame, the rear upper fork and the rear lower fork are stably abutted, the stress overload is reduced, and the stability of the rear triangle of the vehicle frame during bending is improved.

[0065] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A one-piece lightweight frame rear triangle processing technology, characterized in that , including the following process steps: Step 1: Prepare the metal material and mold for the rear triangle of the frame. The metal material of the rear triangle of the frame needs to be heated to a liquid or semi-solid state, and the mold is preheated at the same time. The mold cavity can form the rear triangle of the frame in one piece. The rear triangle of the frame includes the rear seat stay, chain stay and claws. Step 2: pouring and cooling and solidifying. The molten metal of the rear triangle of the frame is poured into the mold cavity in a certain amount. The mold is closed and a certain pressure is applied. After cooling and solidification in the mold, the mold is opened and the formed part is removed. Step 3: The molded part is subjected to a tube drawing process. The molded part is preheated to an appropriate temperature. On the tube drawing device, the heated molded part is stretched by a stretching device at both ends. During this process, the wall thickness of the molded part at both ends gradually decreases, while the outer diameter and length increase accordingly. By controlling the strength and speed of the stretching, the wall thickness of the molded part at both ends can be precisely adjusted, thereby achieving adjustment of the wall thickness of the seat stay and chain stay tubes. Step 4: The formed part is bent into a triangular structure. The formed part after the tube is drawn is bent by a bending processing device to form a triangular structure to meet the shape requirements of the triangular frame. Step five: The molded parts are hydraulically expanded and CNC machined. Hydraulic expansion can provide uniform pressure distribution, reduce local stress concentration and deformation of the molded parts, process the molded parts into flat squares, and undergo CNC machining to ensure the accuracy and performance of the molded parts.

2. The process for processing the rear triangle of an integrated lightweight frame according to claim 1, characterized in that: In the second step, the temperature and pouring speed of the molten metal in the rear triangle of the frame need to be precisely controlled to ensure that the molten metal can evenly fill the mold.

3. A processing device for the rear triangle of an integrated lightweight frame, characterized in that: include: A processing table, wherein bending components are adjustable on both sides of the top of the processing table, and the bending components are arranged in a triangle and are used for triangular bending of the rear triangle of the frame; A bearing seat is provided on the processing table, and the processing table enables the bearing seat to move between the two bending assemblies. A bearing groove is provided on the top of the bearing seat for supporting the rear triangle of the frame; The supporting component is arranged in front of the bearing seat, and is used to support the rear triangle of the frame after demoulding. The supporting component can change the supporting angle according to the bending angle of the rear triangle of the frame; wherein, The supporting assembly includes a support plate, a plurality of mounting frames, an adjusting rod and a supporting wheel. The support plate is fixedly connected to the front of the bearing seat. The mounting frames are respectively fixed on both sides of the support plate. A recess is provided through the mounting frame. One end of the adjusting rod is rotatably provided in the recess. The supporting wheel is installed on the top of the other end of the adjusting rod, and the supporting wheel supports the seat fork and the chain fork at the rear triangle of the frame.

4. The device for processing the rear triangle of an integrated lightweight frame according to claim 3, characterized in that: A driving motor is provided through the top of the installation frame, and the output end of the driving motor extends into the recess and is connected to the top end of the adjusting rod for driving the adjusting rod to change its horizontal angle.

5. The processing device for the rear triangle of an integrated lightweight frame according to claim 3, characterized in that: The bending assembly includes a plurality of positioning frames and bending wheels. The positioning frames are arranged in a triangle in pairs on the processing table, and space for the bearing seat to move is left between the two positioning frames. The plurality of bending wheels are arranged at equal intervals on the positioning frames for bending the rear triangle of the frame.

6. The device for processing the rear triangle of an integrated lightweight frame according to claim 3, characterized in that: A positioning column is provided at the top of the bearing groove corresponding to the arc-shaped opening of the hook of the rear triangle of the frame.

7. The device for processing the rear triangle of an integrated lightweight frame according to claim 3, characterized in that: It also includes a limiting component, which is arranged on the bearing seat. The limiting component is used to limit the hook claw of the rear triangle of the frame in the bearing groove. The limiting component includes a support frame, a cylinder and a limiting disc. The support frame is arranged on the bearing seat, and the cylinder is arranged on the support frame. The limiting disc is fixedly connected to the output end of the cylinder corresponding to the upper side of the bearing groove, and is used to limit the hook claw of the rear triangle of the frame.

8. The device for processing the rear triangle of an integrated lightweight frame according to claim 7, characterized in that: An elastic pad is provided at the bottom of the limiting disc, and the elastic pad is used to buffer the squeezing force of the dropout claws of the limiting disc acting on the rear triangle of the frame.

9. The device for processing the rear triangle of an integrated lightweight frame according to claim 3, characterized in that: A movable groove is provided on the top of the processing table for the bottom of the supporting seat, a lead screw is rotatably connected in the movable groove, a movable block is extended from the bottom of the supporting seat in the movable groove, the lead screw passes through the movable block and is threadedly connected to the movable block.

10. The integrated lightweight frame rear triangle processing device according to claim 9, characterized in that: A rotary motor is provided at the rear end of the processing table so as to penetrate the moving groove, and an output end of the rotary motor is connected to one end of the lead screw for driving the lead screw to rotate.

Images