Lathe fixture for machining aluminum alloy thin-walled tube
By designing the positioning mechanism and clamping mechanism in the lathe fixture, the problem of uncertain position of the thin-walled tube after being clamped is solved, and the position consistency and thickness uniformity of the thin-walled tube during the turning process are achieved.
Patent Information
- Application Number
- CN202421236771.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-31
AI Technical Summary
In the prior art, after being clamped, the position of the thin-walled pipe is not constant, resulting in uncertain turning position and inconsistent thickness of the thin-walled pipe.
A lathe fixture including a mounting plate, a positioning mechanism and a clamping mechanism is designed. The positioning mechanism moves in the Y direction through the jacking spring to ensure that the thin-walled tube is correctly positioned; the clamping mechanism evenly surrounds the positioning mechanism and adjusts the position of the clamping piece to ensure the precise position of the thin-walled tube.
Through the cooperation of the positioning mechanism and the clamping mechanism, the position consistency of the thin-walled tube during the turning process is ensured, the problem of uneven thickness is avoided, and the finished product quality of the thin-walled tube is improved.
Smart Images
Figure CN222370938U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a lathe clamp, in particular to a lathe clamp for processing aluminum alloy thin-walled tubes. Background Art
[0002] In the existing CNC lathe technology, when it is necessary to turn a heavier or longer shaft workpiece, the most commonly used clamping solution is "one clamp and one push". This solution is to clamp one end of the shaft workpiece with a movable clamping claw, and then use the back center to push the other end. Through this clamping method, the workpiece can be made more stable during the turning process, so that it can be processed with a larger cutting amount and improve the processing efficiency. This clamping solution can effectively ensure the stability and processing quality of the workpiece, so that the CNC lathe can meet the needs of turning heavier or longer workpieces.
[0003] When processing a long thin-walled tube workpiece, a thin-walled tube clamping fixture with one clamp and one top is used. In the prior art, the thin-walled tube clamping fixture includes: a positioning base, a base and a clamping arm, the clamping arm is in the form of a screw, there are at least 3 groups of clamping arms and bases, the thin-walled tube is placed in the center of the positioning base, at least 3 groups of bases and clamping arms are arranged around the center of the positioning base, a base is installed on the positioning base, a clamping arm is installed on the base, and the clamping arm is threadedly connected to the base. When the thin-walled tube is placed in the center of the positioning base, the clamping arm is adjusted so that all the clamping arms are close to the center of the positioning base. Since the thin-walled tube is not positioned, the distance from different clamping arms to the center of the positioning base may be different after adjusting the clamping arm, which leads to an uncertain position of the thin-walled tube after being clamped. When the relative position of the turning and milling equipment and the positioning base is certain, the position of the thin-walled tube after clamping cannot be guaranteed to be certain, which leads to an uncertain turning position, resulting in inconsistent thickness of the thin-walled tube, which does not meet the requirements of the thin-walled tube. Utility Model Content
[0004] The utility model provides a lathe clamp for processing aluminum alloy thin-walled tubes, which solves the problem in the prior art that the relative positions of the thin-walled tubes and the positioning base are uncertain after being clamped by the clamping arms.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the utility model discloses a lathe fixture for processing aluminum alloy thin-walled tubes, comprising: a mounting plate, a positioning mechanism and a clamping mechanism; the mounting plate comprises: a base and an upper seat plate, the upper portion of the base is connected to the upper seat plate, a circular hole is opened in the center of the upper seat plate, the positioning mechanism passes through the circular hole, and the positioning mechanism emerges from the top surface of the upper seat plate; the base is equipped with a positioning mechanism, the positioning mechanism is used to extend into the aluminum alloy thin-walled tube to be processed, the positioning mechanism can move in the Y direction relative to the base, and a top height spring is installed between the positioning mechanism and the inner wall of the base; the upper surface of the upper seat plate is equipped with a clamping mechanism, the clamping mechanism is evenly surrounded by the positioning mechanism, and the clamping mechanism is used to clamp the aluminum alloy thin-walled tube to be processed that is extended by the positioning mechanism.
[0006] Preferably, the positioning mechanism includes: a positioning seat and a positioning column, the base is recessed to form an installation cavity, the positioning seat is installed in the installation cavity, a lift spring is installed between the positioning seat and the inner wall of the installation cavity, the positioning column is connected above the positioning seat, the positioning column passes through the circular hole of the upper seat plate, and the positioning seat cannot extend into the circular hole.
[0007] Preferably, each clamping mechanism includes: a clamping plate, a movable seat, a sliding seat, a positioning pin and a screw rod. The clamping plate is used to press on the aluminum alloy thin-walled tube to be processed outside the positioning column. The clamping plate is fixed to the sliding seat. The sliding seat is installed on the movable seat. The sliding seat can move radially relative to the movable seat in the mounting disk. The sliding seat is connected to one end of the rotatable screw rod. The screw rod is threadedly connected to the sliding seat. The movable seat can move radially relative to the mounting disk. The movable seat is positioned on the mounting disk by the positioning pin.
[0008] Preferably, the upper seat plate is provided with a slide groove for the movable seat to slide, and at least two positioning holes are provided beside the slide groove, and the positioning holes are provided for the positioning pins to be inserted, and the positioning pins pass through the movable seat.
[0009] Preferably, the sliding seat is provided with a through slot for the positioning pin to pass through.
[0010] Preferably, the movable seat comprises: a seat body and an end block, the end of the seat body is fixed with the end block, the end block is for the screw rod to pass through, and the end block is threadedly connected to the screw rod.
[0011] Preferably, a limit block protrudes from the sliding seat, a limit rod is installed on the side of the limit block away from the circular hole, the limit rod passes through the seat body, and nuts are threadedly connected at both ends of the limit rod. When the limit block is in close contact with the limit rod, the clamping plate is away from the aluminum alloy thin-walled tube to be processed.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] In the present application, a positioning mechanism and a lifting spring are provided, and the positioning mechanism can move in the Y direction. When it is necessary to turn the aluminum alloy thin-walled tube to be processed, the turning tool is inserted into the aluminum alloy thin-walled tube to be processed, and a turning drive mechanism is installed above the mounting plate. The turning tool is installed at the output end of the turning drive mechanism, and the turning tool is located directly above the mounting plate. The turning drive mechanism is used to drive the turning tool to rotate and lift. A downward pressure column is fixed next to the turning tool, and the bottom surface of the downward pressure column is lower than the position of the bottom surface of the turning tool. The downward pressure column presses the positioning mechanism downward, so that the positioning mechanism gives up the turning position required by the current turning tool, thereby ensuring that the positioning mechanism will not block the turning of the aluminum alloy thin-walled tube to be processed during turning. The lifting spring can lift the positioning mechanism to extend into the aluminum alloy thin-walled tube to be processed. When the aluminum alloy thin-walled tube to be processed is installed, the positioning mechanism maintains a higher position under the elastic force of the lifting spring. Then, the aluminum alloy thin-walled tube to be processed is sleeved outside the positioning mechanism, and the positioning mechanism locates the position of the aluminum alloy thin-walled tube to be processed from the inner wall. Finally, it is only necessary to adjust all the clamping mechanisms to cooperate with the positioning mechanism so that the clamping pieces of all the clamping mechanisms are pressed against the outside of the aluminum alloy thin-walled tube to be processed positioned by the positioning mechanism, and the aluminum alloy thin-walled tube to be processed will not be positioned due to the lack of a positioning mechanism. The aluminum alloy thin-walled tube causes the aluminum alloy thin-walled tube to be processed to move randomly when clamped, and thus the accurate position after the clamping mechanism is adjusted cannot be guaranteed. The present application takes the aluminum alloy thin-walled tube to be processed that has been positioned by the positioning mechanism as a reference, and adjusts the clamping mechanism based on the reference, so that the position of the aluminum alloy thin-walled tube to be processed can be accurate after the clamping mechanism is clamped, thereby ensuring the relative position of the aluminum alloy thin-walled tube to be processed and the turning tool to be certain, so as to ensure that the wall thickness of the aluminum alloy thin-walled tube to be processed after turning is uniform, and the quality of the finished aluminum alloy thin-walled tube to be processed is good.
[0014] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Schematic diagram of the structure of the lathe fixture for processing aluminum alloy thin-walled tubes.
[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0017] Figure 3 It is a structural schematic diagram of the mobile seat.
[0018] Figure numerals: mounting plate 1, base 11, upper seat plate 12, slide groove 120, positioning hole 121, positioning mechanism 2, clamping mechanism 3, clamping plate 31, movable seat 32, seat body 321, end block 322, limiting rod 323, nut 324, sliding seat 33, through groove 330, limiting block 331, positioning pin 34, screw 35. DETAILED DESCRIPTION
[0019] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods:
[0020] like Figures 1 to 3 As shown, the utility model discloses a lathe fixture for processing aluminum alloy thin-walled tubes, comprising: a mounting plate 1, a positioning mechanism 2 and a clamping mechanism 3; the mounting plate 1 comprises: a base 11 and an upper base plate 12, the upper base plate 12 is connected to the upper base plate 11, a circular hole is opened in the center of the upper base plate 12, the positioning mechanism 2 passes through the circular hole, and the positioning mechanism 2 emerges from the top surface of the upper base plate 12; the base 11 is equipped with a positioning mechanism 2, the positioning mechanism 2 is used to extend into the aluminum alloy thin-walled tube to be processed, the positioning mechanism 2 can move in the Y direction relative to the base 11, and a top height spring (not shown in the figure) is installed between the positioning mechanism 2 and the inner wall of the base 11; the upper surface of the upper base plate 12 is equipped with a clamping mechanism 3, the clamping mechanism 3 is evenly surrounded by the positioning mechanism 2, and the clamping mechanism 3 is used to clamp the aluminum alloy thin-walled tube to be processed that is extended by the positioning mechanism 2.
[0021] The positioning mechanism 2 includes: a positioning seat and a positioning column. The base 11 is recessed to form an installation cavity. The positioning seat is installed in the installation cavity. A lifting spring is installed between the positioning seat and the inner wall of the installation cavity. The positioning column is connected to the top of the positioning seat. The positioning column passes through the circular hole of the upper seat plate 12, and the positioning seat cannot extend into the circular hole. The size of the positioning seat is large, so the positioning seat cannot extend into the circular hole, thereby ensuring that the positioning seat and the positioning column will not be separated from the entire installation plate 1. The installation cavity forms an activity space for the positioning seat and the lifting spring.
[0022] Each clamping mechanism 3 includes: a clamping plate 31, a movable seat 32, a sliding seat 33, a positioning pin 34 and a screw 35. The clamping plate 31 is used to press on the aluminum alloy thin-walled tube to be processed outside the positioning column. The clamping plate 31 is fixed to the sliding seat 33. The sliding seat 33 is installed on the movable seat 32. The sliding seat 33 can move radially relative to the mounting disk 1. The sliding seat 33 is connected to one end of a rotatable screw 35. The screw 35 is threadedly connected to the sliding seat 33. The movable seat 32 can move radially relative to the mounting disk 1. The movable seat 32 is positioned on the mounting disk 1 by the positioning pin 34. Different types of aluminum alloy thin-walled tubes to be processed have different wall thicknesses. Therefore, in order to adapt to the different thicknesses of aluminum alloy thin-walled tubes to be processed, a movable seat 32 is designed to be movable relative to the mounting plate 1. When it moves to the point where it can clamp the aluminum alloy thin-walled tube to be processed, a positioning pin 34 is used to position the movable seat 32 on the mounting plate 1 to prevent the movable seat 32 from shaking at will and affecting the clamping work.
[0023] The upper seat plate 12 is provided with a slide groove 120 for the movable seat 32 to slide, and at least two positioning holes 121 are provided beside the slide groove 120, and the positioning holes 121 are provided for the positioning pins 34 to be inserted, and the positioning pins 34 pass through the movable seat 32. The slide groove 120 guides the movement of the movable seat 32, so that the movable seat 32 moves strictly in the radial direction of the upper seat plate 12. The positioning pins 34 can be moved at will, and the positioning pins 34 are inserted into the positioning holes 121, the through holes and the through grooves 330.
[0024] The sliding seat 33 is provided with a through slot 330 for the positioning pin 34 to pass through. The moving seat 32 is provided with a through hole for the positioning pin 34 to pass through. After the positioning pin 34 passes through the through hole, the positioning pin 34 cannot move freely relative to the moving seat 32. The through slot 330 is large enough to ensure that when the screw rod 35 rotates and pushes the sliding seat 33 to move, the screw rod 35 moves in the through slot 330, and the sliding seat 33 is not blocked from being pushed by the screw rod 35.
[0025] The movable seat 32 includes a seat body 321 and an end block 322. The end of the seat body 321 is fixed with the end block 322, the end block 322 is passed through by the screw rod 35, and the end block 322 is threadedly connected with the screw rod 35. The end block 322 is the basis for the threaded connection of the screw rod 35, so that when the screw rod 35 is rotated, the screw rod 35 can drive the sliding seat 33 to move.
[0026] A limit block 331 is protruded from the sliding seat 33. A limit rod 323 is installed on the side of the limit block 331 away from the circular hole. The limit rod 323 passes through the seat body 321. Nuts 324 are threadedly connected at both ends of the limit rod 323. When the limit block 331 is in close contact with the limit rod 323, the clamping piece 31 is away from the aluminum alloy thin-walled tube to be processed. When the screw rod 35 drives the sliding seat 33 and the clamping piece 31 away from the aluminum alloy thin-walled tube to be processed, if the sliding seat 33 moves too far, the through groove 330 on the sliding seat 33 will deviate from the through hole on the sliding seat 33, which will affect the function of the positioning pin 34 passing through the through groove 330 and then through the through hole. Therefore, the limit block 331 is provided to cooperate with the limit rod 323. The limit rod 323 positions the clamping piece 31 and the sliding seat 33 away from the aluminum alloy thin-walled tube to be processed to prevent the sliding seat 33 and the clamping piece 31 from retreating excessively.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A lathe fixture for processing aluminum alloy thin-walled tubes, characterized in that: include: A mounting plate (1), a positioning mechanism (2) and a clamping mechanism (3); The mounting plate (1) comprises: a base (11) and an upper base plate (12); the upper base plate (12) is connected to the base (11); a circular hole is opened in the center of the upper base plate (12); the positioning mechanism (2) passes through the circular hole, and the positioning mechanism (2) emerges from the top surface of the upper base plate (12); A positioning mechanism (2) is mounted on the base (11), the positioning mechanism (2) is used to extend into the aluminum alloy thin-walled tube to be processed, the positioning mechanism (2) can move in the Y direction relative to the base (11), and a lifting spring is installed between the positioning mechanism (2) and the inner wall of the base (11); A clamping mechanism (3) is installed on the upper surface of the upper seat plate (12). The clamping mechanism (3) evenly surrounds the positioning mechanism (2). The clamping mechanism (3) is used to clamp the aluminum alloy thin-walled tube to be processed that is inserted into the positioning mechanism (2).
2. A lathe fixture for processing aluminum alloy thin-walled tubes according to claim 1, characterized in that: The positioning mechanism (2) comprises: a positioning seat and a positioning column. The base (11) is recessed to form a mounting cavity. The positioning seat is mounted in the mounting cavity. A lifting spring is mounted between the positioning seat and the inner wall of the mounting cavity. The positioning column is connected to the top of the positioning seat. The positioning column passes through the circular hole of the upper seat plate (12). The positioning seat cannot extend into the circular hole.
3. A lathe fixture for processing aluminum alloy thin-walled tubes according to claim 2, characterized in that: Each clamping mechanism (3) comprises: a clamping sheet (31), a movable seat (32), a sliding seat (33), a positioning pin (34) and a screw rod (35); the clamping sheet (31) is used to press on the aluminum alloy thin-walled tube to be processed outside the positioning column; the clamping sheet (31) is fixed to the sliding seat (33); the sliding seat (33) is installed on the movable seat (32); the sliding seat (33) can move relative to the movable seat (32) in the radial direction of the mounting plate (1); the sliding seat (33) is connected to one end of a rotatable screw rod (35); the screw rod (35) is threadedly connected to the sliding seat (33); the movable seat (32) can move relative to the mounting plate (1) in the radial direction; the movable seat (32) is positioned on the mounting plate (1) by the positioning pin (34).
4. A lathe fixture for processing aluminum alloy thin-walled tubes according to claim 3, characterized in that: The upper seat plate (12) is provided with a slide groove (120) for the movable seat (32) to slide, and at least two positioning holes (121) are provided beside the slide groove (120). The positioning holes (121) are provided for the positioning pins (34) to be inserted, and the positioning pins (34) pass through the movable seat (32).
5. The lathe fixture for processing aluminum alloy thin-walled tube according to claim 4, characterized in that: The sliding seat (33) is provided with a through slot (330) for the positioning pin (34) to pass through.
6. A lathe fixture for processing aluminum alloy thin-walled tubes according to claim 5, characterized in that: The movable seat (32) comprises: a seat body (321) and an end block (322); the end of the seat body (321) is fixed with the end block (322); the end block (322) allows the screw rod (35) to pass through, and the end block (322) is threadedly connected to the screw rod (35).
7. A lathe fixture for processing aluminum alloy thin-walled tubes according to claim 6, characterized in that: A limiting block (331) protrudes from the sliding seat (33), a limiting rod (323) is installed on the side of the limiting block (331) away from the circular hole, the limiting rod (323) passes through the seat body (321), and nuts (324) are threadedly connected at both ends of the limiting rod (323). When the limiting block (331) and the limiting rod (323) are in close contact, the clamping sheet (31) is away from the aluminum alloy thin-walled tube to be processed.