A manual center stand for thin-walled machining

Abstract

The utility model relates to manual center stand technical field, concretely relates to a manual center stand for thin wall processing, aims at solving the problem that manual center stand space continuously occupies and overall interference range is bigger. Its technical scheme main points are: including center stand base and setting first arm body, second arm body and third arm body on center stand base, center stand base is L shape, the axis line of first arm body, second arm body and third arm body is located same plane and meets in same point, and center stand base is equipped with first arm adjusting mechanism, second arm adjusting mechanism and third arm adjusting mechanism, the improved manual center stand keeps open state under the non clamping state of the clamping arm, improves the convenience and operation flexibility of overall processing environment, and the manual center stand is set in the position more behind than cutter head, reduces the protruding part, solves the position conflict problem of manual center stand and cutter head.

Description

Technical Field

[0001] This utility model relates to the field of manual center rests, and in particular to a manual center rest for thin-walled machining. Background Technology

[0002] The manual center rest uses a clamping mechanism to position and support thin-walled workpieces, and works with cutting tools to complete machining operations such as turning.

[0003] Chinese invention patent CN117001371A discloses a manual center frame for adjusting lead screws in thin-walled machining. The manual center frame's structural design includes a center frame base and a first arm body, a second arm body, and a third arm body mounted on the base. The third arm body is equipped with a first arm adjustment mechanism and a rotating arm adjustment mechanism. A center frame upper body is mounted on the center frame base in a flip-up manner, and a second arm adjustment mechanism is mounted on the upper body. The arrangement of the first arm adjustment mechanism, the second arm adjustment mechanism, and the rotating arm adjustment mechanism on the same plane and intersecting at the same point achieves the technical effects of more convenient loading and unloading, longer service life, better precision and stability, and higher safety.

[0004] The aforementioned manual center rest uses a lead screw drive, which means the overall structure will continuously occupy a certain amount of space throughout its service life. Even when the equipment is not clamped, it cannot free up more operating space, which may affect processing efficiency and convenience. Moreover, in actual use, the structural layout of the manual center rest must be compatible with the customer's existing equipment. Since the customer's processing system is equipped with an angled cutter head, the manual center rest and the cutter head structure are prone to collision and interference during processing movement, affecting the stability of the processing process and even causing damage to the equipment and workpiece.

[0005] Therefore, a new technical solution is needed to address the problems existing in the current technology. Utility Model Content

[0006] The purpose of this invention is to provide a manual center rest for thin-walled machining, so as to solve the problems of continuous space occupation and large overall interference range of the manual center rest in the prior art.

[0007] The technical solution of this utility model is: a manual center rest for thin-walled machining, comprising: The central frame base and the first arm body, the second arm body and the third arm body disposed on the central frame base, the central frame base is L-shaped, and the axis lines of the first arm body, the second arm body and the third arm body are located in the same plane and intersect at the same point; The central frame base is equipped with a first arm adjustment mechanism, a second arm adjustment mechanism and a third arm adjustment mechanism; The first arm body is rotatably connected to the central frame base, and the first arm adjustment mechanism includes a first adjustment member for driving the first arm body to rotate its front end toward the front end of the third arm body; The second arm body is slidably connected to the central frame base, and the second arm adjustment mechanism includes a second adjustment member for adjusting the extension or retraction of the second arm body; The third arm body is rotatably connected to the central frame base, and the third arm adjustment mechanism includes a third adjustment member for driving the third arm body to rotate its front end toward the front end of the first arm body.

[0008] Preferably, the first arm adjustment mechanism further includes a reset member. After the driving force of the first adjustment member on the first arm body is removed, the first arm body is manually reset by the reset member. After the driving force of the third adjustment member on the third arm body is removed, the third arm body automatically returns to its original position by gravity.

[0009] Preferably, the reset component is rotatably connected to the central frame base, the reset component has the same rotation axis as the first arm body, the reset component has a first sliding groove, the first arm body has a first sliding column fixedly connected to it, and the first sliding column passes through the first sliding groove and is slidably connected to the reset component.

[0010] Preferably, the first arm adjustment mechanism further includes a first limiting member fixedly connected to the central frame base, and the two ends of the first arm body rotation shaft are fixedly connected to the first limiting member and the central frame base, respectively.

[0011] Preferably, the first limiting member is rotatably connected to a limiting rod, the reset member is fixedly connected to a positioning bracket, the positioning bracket has a positioning groove, and the reset member is locked when the limiting rod passes into the positioning groove.

[0012] Preferably, when the reset member is locked, the first slide groove is used to limit the angular range of rotation of the first arm body; when the reset member is not locked, after the reset member rotates until the first slide column abuts against the inner wall of one end of the first slide groove, the first arm body rotates with the reset member.

[0013] Preferably, the second arm adjustment mechanism further includes a fixing member fixedly connected to the central frame base, and the second adjustment member drives the second arm body to extend or retract relative to the fixing member.

[0014] Preferably, the fixing member has a second sliding groove, and the second arm body passes through the second sliding groove and is slidably connected to the fixing member.

[0015] Preferably, the second arm body has a through groove, and the central frame base is fixedly connected to a second limiting member. The second limiting member passes through the through groove to limit the maximum distance of the extension of the second arm body relative to the fixed member. The second limiting member is located in the second sliding groove at one end away from the second adjusting member.

[0016] Preferably, the central frame base is provided with a third sliding groove, and the third arm adjustment mechanism further includes a third sliding column fixedly connected to the third arm body. The third sliding column passes through the third sliding groove to limit the angle range of rotation of the third arm body.

[0017] Compared with the prior art, the advantages of this utility model are: (1) The improved manual center frame occupies the corresponding space only when the clamping arm needs to be clamped, and remains open when not clamped. This increases the operating space around the release equipment, making it more suitable for compact processing environments and improving the overall convenience and operational flexibility of the processing environment.

[0018] (2) The improved manual center rest is set further back than the cutter head, reducing the protruding part, solving the positional conflict between the manual center rest and the cutter head, improving the compatibility of the center rest with the existing machining system, reducing the risk of workpiece or equipment damage, and thus improving the stability and safety of the machining process. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of the manual center frame described in this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the manual center frame described in this utility model. Figure 2 ; Figure 3 This is a perspective view of the workpiece with a circular cross-sectional shape that is clamped by the manual center frame described in this utility model.

[0020] The components include: 1. Central frame base; 11. Third slide groove; 12. Second limiting component; 2. First arm body; 21. First slide column; 3. Second arm body; 31. Through groove; 4. Third arm body; 5. First arm adjustment mechanism; 51. First adjusting component; 52. Reset component; 521. First slide groove; 522. Positioning bracket; 5221. Positioning groove; 53. First limiting component; 531. Limiting rod; 6. Second arm adjustment mechanism; 61. Second adjustment component; 62. Fixing component; 621. Second slide groove; 7. Third arm adjustment mechanism; 71. Third adjustment component; 72. Third sliding column. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to specific embodiments: like Figure 1 As shown, a manual center rest for thin-walled machining includes a center rest base 1 and a first arm body 2, a second arm body 3, and a third arm body 4 mounted on the center rest base 1. Rollers are provided at the front ends of the first arm body 2, second arm body 3, and third arm body 4. The centerlines of the first arm body 2, second arm body 3, and third arm body 4 are located in the same plane and intersect at the same point. The center rest base 1 is equipped with a first arm adjustment mechanism 5, a second arm adjustment mechanism 6, and a third arm adjustment mechanism 7. The first arm body 2, second arm body 3, and third arm body 4 cooperate to form a clamping support for the thin-walled workpiece. Removing the first adjustment mechanism 51... After the driving force of the first arm body 2 is removed, the first arm body 2 is manually reset by the reset component 52; after the driving force of the third adjustment component 71 on the third arm body 4 is removed, the third arm body 4 automatically returns to its original position by gravity. The center frame base 1 is L-shaped and is equipped with an anti-detachment mechanism to prevent the manual center frame from falling off the machine tool track. The first arm body 2, the second arm body 3 and the third arm body 4 can form uniform support points around the thin-walled workpiece. Under the premise of ensuring the positioning stability during thin-walled processing, the overall lateral space occupied by the manual center frame is reduced, thereby increasing the operating space for adapting to existing machine tools and reserving sufficient operating area for tool movement during thin-walled processing.

[0022] like Figures 1-3As shown, the first arm body 2 is rotatably connected to the central frame base 1. The first arm adjustment mechanism 5 includes a first adjusting member 51, a resetting member 52, and a first limiting member 53 fixedly connected to the central frame base 1 for driving the first arm body 2 to rotate its front end toward the front end of the third arm body 4. The two ends of the rotation axis of the first arm body 2 are fixedly connected to the first limiting member 53 and the central frame base 1, respectively. The resetting member 52 is rotatably connected to the central frame base 1. The resetting member 52 is the same as the rotation axis of the first arm body 2. The first slide groove 521 is provided on the first arm body 2, and the first slide post 21 is fixedly connected to it. The first slide post 21 passes through the first slide groove 521 and is slidably connected to the reset member 52. The first limiting member 53 is rotatably connected to the limiting rod 531. The reset member 52 is fixedly connected to the positioning bracket 522, which has a positioning groove 5221. When the limiting rod 531 passes through the positioning groove 5221, it locks the reset member 52. When the reset member 52 is locked, the first slide groove 521 is used to limit the rotation angle range of the first arm body 2. When 52 is not locked, the reset member 52 rotates until the first sliding column 21 abuts against the inner wall of one end of the first sliding groove 521, and then the first arm body 2 rotates with the reset member 52; the first adjusting member 51 flexibly adjusts the clamping range according to the outer diameter of the thin-walled workpiece to adapt to the support requirements of thin-walled workpieces of different specifications; the first limiting member 53 can ensure the stability of the axis of the first arm body 2 and the reset member 52 during rotation, avoid the decrease in clamping accuracy of the manual center frame due to the shaking of the rotating shaft, and prevent the first arm body 2 from radially slipping out during processing; remove After the first adjusting member 51 is driven, the first arm body 2 is manually reset by the reset member 52. The reset member 52 and the first arm body 2 share a rotating shaft. Through the sliding cooperation of the first sliding column 21 and the first sliding groove 521, the first arm body 2 can be restricted in the rotation angle range of the first arm body 2 by the first sliding groove 521 when the reset member 52 is locked. In the state where the reset member 52 is not locked, after the reset member 52 rotates to the point where the first sliding column 21 abuts against the inner wall of one end of the first sliding groove 521, the first arm body 2 is reset with the rotation of the reset member 52.

[0023] like Figure 1As shown, the second arm body 3 is slidably connected to the central frame base 1. The second arm adjustment mechanism 6 includes a second adjusting member 61 for adjusting the extension or retraction of the second arm body 3 and a fixing member 62 fixedly connected to the central frame base 1. The second adjusting member 61 drives the second arm body 3 to extend or retract relative to the fixing member 62. The fixing member 62 has a second sliding groove 621. The second arm body 3 passes through the second sliding groove 621 and is slidably connected to the fixing member 62. The second arm body 3 has a through groove 31. The central frame base 1 is fixedly connected to a second limiting member 12. The second limiting member 12 passes through the through groove 31 to limit the maximum extension distance of the second arm body 3 relative to the fixing member 62. The second limiting member 12 is located at the end of the second slide groove 621 away from the second adjusting member 61. According to the length of the thin-walled workpiece and the processing position requirements, the second adjusting member 61 can flexibly adjust the extension length of the second arm body 3 to ensure processing accuracy. The second slide groove 621 provides sliding guidance for the second arm body 3 to ensure that the second arm body 3 moves in a straight line during the extension and retraction process, preventing the support point from being misaligned due to the offset of the second arm body 3. The second limiting member 12 limits the maximum extension distance of the second arm body 3 to avoid the second arm body 3 from over-extending, which would cause the second arm body 3 to detach from the fixing member 62 and cause equipment failure, and further provides structural protection for the thin-walled processing process.

[0024] like Figures 1-3 As shown, the third arm body 4 is rotatably connected to the central frame base 1. The third arm adjustment mechanism 7 includes a third adjustment member 71 for driving the third arm body 4 to rotate its front end toward the front end of the first arm body 2, and a third sliding column 72 fixedly connected to the third arm body 4. The central frame base 1 has a third sliding groove 11. The third sliding column 72 passes through the third sliding groove 11 to limit the rotation angle range of the third arm body 4. The third arm body 4 and the first arm body 2 cooperate to form a bidirectional clamping support for the thin-walled workpiece, improving clamping stability. After the driving force of the third adjustment member 71 is removed, the third arm body 4 automatically returns to its original position by gravity without the need for additional manual operation, simplifying the workpiece loading and unloading process and improving processing efficiency. The third sliding column 72 slides in the third sliding groove 11 to limit the rotation angle range of the third arm body 4, ensuring that the third arm body 4 always provides effective support for the thin-walled workpiece within the design range.

[0025] like Figures 1-3As shown, in at least one embodiment, the first arm body 2 is disposed on the upper part of the central frame base 1, the second arm body 3 is disposed on the middle part of the central frame base 1, and the third arm body 4 is disposed on the lower part of the central frame base 1. The first adjusting member 51, the second adjusting member 61, and the third adjusting member 71 are screws. The upper and lower parts of the central frame base 1 are provided with screw rings for installing the first adjusting member 51 and the third adjusting member 71. When the first adjusting member 51 is screwed in, it pushes the tail end of the first arm body 2 to rotate clockwise. When the first adjusting member 51 is screwed out, the first arm body 2 maintains its original rotation angle. The third adjusting member 71 presses down the first arm body 2. The tail end of the third adjusting member 71 rotates counterclockwise. After the third adjusting member 71 is retracted, the third arm body 4 automatically rotates back to its original position due to gravity. The end of the reset member 52 away from the first adjusting member 51 has an arc-shaped first sliding groove 521. The first sliding post 21 is welded to the side of the first arm body 2 near the central frame base 1. The upper end of the first limiting member 53 has an outer rotating groove, and an outer rotating shaft is installed in the outer rotating groove. The bottom of the limiting rod 531 is a ring, the middle is cylindrical, and the top is a cap with a radius larger than the middle. The limiting rod 531 is sleeved on the outer rotating shaft. The upper end of the reset member 52 is welded with a positioning bracket 52. 2. The positioning bracket 522 has a stepped positioning groove 5221. The cross-sectional shape of the positioning groove 5221 is arched. The radius of the first step of the positioning groove 5221 is larger than the radius of the top cap of the limiting rod 531. The radius of the second step of the positioning groove 5221 is smaller than the radius of the top cap of the limiting rod 531 but larger than the radius of the middle part of the limiting rod 531. The fixing member 62 is installed in the middle of the center frame base 1. The fixing member 62 has a through hole. One end of the second adjusting member 61 that passes through the through hole is welded to the tail end of the second arm body 3. The fixing member 62 has a rectangular second sliding groove 621. The second sliding groove 621 is away from the center frame. The base 1 has an opening on one side, and the second arm body 3 has a through groove 31. The central frame base 1 is fixedly connected to a second limiting member 12. The second limiting member 12 is located in the second sliding groove 621 at one end away from the second adjusting member 61. The second limiting member 12 passes through the through groove 31, and the end of the second limiting member 1 away from the central frame base 1 passes through the opening and is locked with a nut with a diameter greater than the width of the opening to prevent the second arm body 3 from sliding out radially. The third sliding post 72 is welded to the side of the third arm body 4 near the central frame base 1. The central frame base 1 has an arc-shaped third sliding groove 11, and the third sliding post 72 passes through the third sliding groove 11.

[0026] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A hand center for thin wall machining, characterized in that include: The central frame base (1) and the first arm body (2), the second arm body (3) and the third arm body (4) are arranged on the central frame base (1). The central frame base (1) is L-shaped. The center lines of the first arm body (2), the second arm body (3) and the third arm body (4) are located on the same plane and intersect at the same point. The central frame base (1) is provided with a first arm adjustment mechanism (5), a second arm adjustment mechanism (6) and a third arm adjustment mechanism (7). The first arm body (2) is rotatably connected to the central frame base (1), and the first arm adjustment mechanism (5) includes a first adjustment member (51) for driving the first arm body (2) to rotate its front end toward the front end of the third arm body (4). The second arm body (3) is slidably connected to the central frame base (1), and the second arm adjustment mechanism (6) includes a second adjustment member (61) for adjusting the extension or retraction of the second arm body (3). The third arm body (4) is rotatably connected to the central frame base (1), and the third arm adjustment mechanism (7) includes a third adjustment member (71) for driving the third arm body (4) to rotate its front end toward the front end of the first arm body (2).

2. A manual center rest for thin wall machining according to claim 1, characterized in that: The first arm adjustment mechanism (5) also includes a reset member (52). After the driving force of the first adjustment member (51) on the first arm body (2) is removed, the first arm body (2) is manually reset by the reset member (52). After the driving force of the third adjustment member (71) on the third arm body (4) is removed, the third arm body (4) automatically returns to its original position by gravity.

3. A manual center rest for thin wall machining according to claim 2, characterized in that: The reset component (52) is rotatably connected to the central frame base (1). The reset component (52) has the same rotation axis as the first arm body (2). The reset component (52) has a first sliding groove (521). A first sliding column (21) is fixedly connected to the first arm body (2). The first sliding column (21) passes through the first sliding groove (521) and is slidably connected to the reset component (52).

4. A manual center rest for thin wall machining according to claim 3, characterized in that: The first arm adjustment mechanism (5) also includes a first limiting member (53) fixedly connected to the central frame base (1), and the two ends of the rotation shaft of the first arm body (2) are fixedly connected to the first limiting member (53) and the central frame base (1) respectively.

5. A manual center rest for thin-walled machining according to claim 4, characterized in that: The first limiting member (53) is rotatably connected to the limiting rod (531), and the reset member (52) is fixedly connected to the positioning bracket (522). The positioning bracket (522) has a positioning groove (5221). When the limiting rod (531) passes into the positioning groove (5221), the reset member (52) is locked.

6. A manual center rest for thin wall machining according to claim 5, characterized in that: When the reset member (52) is locked, the first slide groove (521) is used to limit the rotation angle range of the first arm body (2); when the reset member (52) is not locked, after the reset member (52) rotates until the first slide column (21) abuts against the inner wall of one end of the first slide groove (521), the first arm body (2) rotates with the reset member (52).

7. A hand center for thin wall machining according to claim 1, characterized in that: The second arm adjustment mechanism (6) also includes a fixing member (62) fixedly connected to the central frame base (1), and the second adjustment member (61) drives the second arm body (3) to extend or retract relative to the fixing member (62).

8. A manual center rest for thin wall machining according to claim 7, characterized in that: The fixing member (62) has a second sliding groove (621), and the second arm body (3) passes through the second sliding groove (621) and slides to connect with the fixing member (62).

9. A manual center rest for thin-wall machining according to claim 8, characterized in that: The second arm body (3) has a through groove (31), and the central frame base (1) is fixedly connected to a second limiting member (12). The second limiting member (12) passes through the through groove (31) to limit the maximum distance of the extension of the second arm body (3) relative to the fixing member (62). The second limiting member (12) is located at one end of the second slide groove (621) away from the second adjusting member (61).

10. A manual center rest for thin-walled machining according to claim 2, characterized in that: The central frame base (1) is provided with a third slide groove (11), and the third arm adjustment mechanism (7) also includes a third slide column (72) fixedly connected to the third arm body (4). The third slide column (72) passes through the third slide groove (11) to limit the rotation angle range of the third arm body (4).

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