Workpiece eccentricity correction device based on four-jaw chuck

Abstract

The utility model provides a kind of workpiece eccentricity correction device based on four jaw chuck, it is related to four jaw chuck workpiece straightening device technical field, and it includes: mounting table, mounting table top is equipped with transverse moving plate, transverse moving plate top vertical moving plate, vertical moving plate top is fixedly installed with mounting plate, mounting plate one side is equipped with vertical moving plate, and vertical moving plate front side is fixedly installed with positioning chuck.This kind of device is adjusted mechanism being set, can be adjusted respectively in horizontal transverse, horizontal longitudinal and vertical direction to the position of positioning chuck, realize the position fine adjustment of positioning chuck in three-dimensional space, satisfy the correction demand of different eccentric state workpiece, make the axis of workpiece and the axis of four jaw chuck relative, and cooperate with the locking mechanism being set, can be locked after adjustment to screw rod, prevent shock, mistake and cause deviation, cause the eccentricity of workpiece to deviate.

Description

Technical Field

[0001] This utility model relates to the technical field of four-jaw chuck workpiece straightening devices, specifically a workpiece eccentricity correction device based on a four-jaw chuck. Background Technology

[0002] In the field of machining, the need to process eccentric workpieces is very common, such as in the manufacturing of crankshafts and eccentric shafts. Four-jaw chucks are widely used in eccentric workpiece machining scenarios because they can clamp irregular or eccentric workpieces by adjusting the positions of the jaws individually. When machining eccentric workpieces, it is necessary to precisely adjust the relative position between the workpiece and the four-jaw chuck so that the eccentric part of the workpiece meets the machining requirements. Traditional methods often rely on manual repeated adjustment of the jaws or the use of simple tooling. The adjustment process involves multi-dimensional positional changes in horizontal, vertical, and other dimensions. Manual operation makes it difficult to accurately control the displacement in each dimension, which is not only time-consuming and inefficient, but also prone to insufficient correction accuracy due to operational errors, affecting the subsequent machining quality and failing to meet the correction requirements of high-precision and diverse eccentric workpieces. Utility Model Content

[0003] The purpose of this application is to provide a workpiece eccentricity correction device based on a four-jaw chuck, so as to solve the technical problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a workpiece eccentricity correction device based on a four-jaw chuck, comprising: a mounting table, a horizontal moving plate above the mounting table, a vertical moving plate above the horizontal moving plate, a mounting plate fixedly installed on the top of the vertical moving plate, a vertical moving plate on one side of the mounting plate, and a positioning chuck fixedly installed on the front side of the vertical moving plate; An adjustment mechanism is provided on the mounting platform, the transverse moving plate, and the mounting plate respectively, and is used to adjust the position of the positioning chuck. The adjustment mechanism includes: a connecting block, a lead screw, a screw sleeve, a connecting frame, and a handwheel. A locking mechanism is provided outside the lead screw to prevent the lead screw from rotating. The locking mechanism includes: a forward-rotating ratchet, a brake stop tooth a, a reverse-rotating ratchet, a brake stop tooth b, and a placement plate.

[0005] Furthermore, two symmetrically distributed connecting blocks are fixedly installed at the bottom of the mounting platform, the top of the horizontal moving plate, and the front side of the vertical moving plate, respectively. A lead screw is rotatably connected between the two opposing connecting blocks. A threaded sleeve is connected to the outside of the lead screw. Connecting frames are fixedly installed at the bottom of the horizontal moving plate, the bottom of the vertical moving plate, and the back side of the vertical moving plate. One end of the lead screw passes through the connecting block and is fixedly installed with a handwheel.

[0006] Furthermore, a forward-rotating ratchet is fixedly connected to the outside of the lead screw, and a brake stop tooth a is rotatably connected to one side of the connecting block near the forward-rotating ratchet. One end of the brake stop tooth a extends into the teeth of the forward-rotating ratchet. A reverse-rotating ratchet is fixedly connected to the outside, and a brake stop tooth b is rotatably connected to one side of the connecting block opposite to the brake stop tooth a. One end of the brake stop tooth b extends into the teeth of the reverse-rotating ratchet. Placement plates are fixedly installed on one side of the connecting block near both the brake stop tooth a and the brake stop tooth b.

[0007] Furthermore, two guide rails are fixedly installed on the top of the mounting platform, the top of the horizontal moving plate, and the front side of the mounting plate, respectively. Two pairs of symmetrically distributed sliders are fixedly installed on the bottom of the horizontal moving plate, the bottom of the vertical moving plate, and the back side of the vertical moving plate, respectively. The sliders are slidably connected to the corresponding guide rails.

[0008] Furthermore, a connecting plate is fixedly connected to one end of the screw sleeve, and a plurality of mounting holes a are provided on the connecting plate. A mounting hole b corresponding to the mounting hole a is provided on one side of the connecting frame. The connecting frame is connected and fixed by bolts passing through the mounting holes a and the mounting holes b.

[0009] Furthermore, a bearing is provided at the rotatable connection between the lead screw and the connecting block, with the inner ring of the bearing having an interference fit with the lead screw and the outer ring having an interference fit with the connecting block.

[0010] The beneficial effects of this utility model are: The advantage of this utility model is that, through the set adjustment mechanism, the position of the positioning chuck can be adjusted in the horizontal, vertical and other directions, respectively, so as to realize the fine adjustment of the position of the positioning chuck in three-dimensional space, meet the correction requirements of workpieces with different eccentric states, make the axis of the workpiece relative to the axis of the four-jaw chuck, and, with the set locking mechanism, can lock the lead screw after adjustment to prevent vibration, accidental collision and offset, which would cause the workpiece to deviate. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the mounting platform structure of this utility model.

[0015] Figure 4 This is a schematic diagram of the overall structure of this utility model from another perspective.

[0016] Figure 5 This is a schematic diagram of the lead screw structure of this utility model.

[0017] Figure 6 For the present utility model Figure 2 Enlarged view of point A in the middle.

[0018] Figure 7 For the present utility model Figure 4 Enlarged view of section B in the middle.

[0019] The following are the labeling elements in the figure: 1. Mounting platform; 11. Horizontal moving plate; 12. Vertical moving plate; 13. Mounting plate; 14. Vertical moving plate; 15. Positioning chuck; 2. Connecting block; 21. Lead screw; 22. Screw sleeve; 23. Connecting frame; 24. Handwheel; 25. Bearing; 3. Forward rotation ratchet; 31. Brake stop tooth a; 32. Reverse rotation ratchet; 33. Brake stop tooth b; 34. Placement plate; 4. Guide rail; 41. Slider; 5. Connecting plate; 51. Mounting hole a; 52. Mounting hole b. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments. Example

[0025] As attached Figure 1 and Figure 7 The workpiece eccentricity correction device based on a four-jaw chuck shown includes: a mounting platform 1, a horizontal moving plate 11 above the mounting platform 1, a vertical moving plate 12 above the horizontal moving plate 11, a mounting plate 13 fixedly mounted on the top of the vertical moving plate 12, a vertical moving plate 14 on one side of the mounting plate 13, a positioning chuck 15 fixedly mounted on the front side of the vertical moving plate 14, an adjustment mechanism, which is respectively provided on the mounting platform 1, the horizontal moving plate 11 and the mounting plate 13, for adjusting the position of the positioning chuck 15, and a locking mechanism, which is provided outside the lead screw 21 for preventing the lead screw 21 from rotating.

[0026] Specifically: When installing a workpiece, one end of the workpiece is clamped and fixed by the positioning chuck 15. The position of the positioning chuck can be adjusted in the horizontal, vertical and horizontal directions by the adjustment mechanism set on the mounting table 13, the horizontal moving plate 11 and the mounting plate 13, respectively. This allows for fine adjustment of the position of the positioning chuck 15 in three-dimensional space, meeting the correction requirements of workpieces with different eccentric states. The axis of the positioning chuck 15 is aligned with the axis of the four-jaw chuck. After adjustment, the locking mechanism can lock the lead screw 21 to prevent it from rotating arbitrarily and to keep it in a fixed state. This avoids the lead screw 21 from rotating again due to external vibration, accidental contact or other factors, which would change the position of the positioning chuck 15 and affect the eccentricity correction accuracy of the workpiece. Example

[0027] Based on Embodiment 1, the solution in Embodiment 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 7 As shown below, see details: The adjustment mechanism includes: a connecting block 2, a lead screw 21, a screw sleeve 22, a connecting frame 23, and a handwheel 24. Two symmetrically distributed connecting blocks 2 are fixedly installed at the bottom of the mounting platform 1, the top of the horizontal moving plate 11, and the front side of the vertical moving plate 14. A lead screw 21 is rotatably connected between the two opposing connecting blocks 2. A screw sleeve 22 is threaded onto the outside of the lead screw 21. A connecting frame 23 is fixedly installed at the bottom of the horizontal moving plate 11, the bottom of the vertical moving plate 12, and the back side of the vertical moving plate 14. One end of the lead screw 21 passes through the connecting block 2 and is fixedly installed with the handwheel 24. A bearing 25 is provided at the rotatable connection between the lead screw 21 and the connecting block 2. The inner ring of the bearing 25 is interference-fitted with the lead screw 21, and the outer ring is interference-fitted with the connecting block 2.

[0028] Specifically: When adjusting the position of the positioning chuck 15, rotating the handwheel 24 drives the lead screw 21 to rotate. The lead screw 21 rotates inside the bearing 25 on the connecting block 2 to reduce the frictional resistance when the lead screw 21 rotates. The rotation of the lead screw 21 engages with the screw sleeve 22, which in turn drives the screw sleeve 22 to move the connecting frame 23. The connecting frame 23 drives the connected horizontal moving plate 11, vertical moving plate 12, or vertical moving plate 14 to move. Rotating the handwheel 2 that drives the horizontal moving plate 11 to move allows the horizontal moving plate 11 to move relative to the mounting table 1 in the horizontal direction. Rotating the handwheel 2 that drives the vertical moving plate 12 to move allows the vertical moving plate 12 to move in the horizontal direction. Rotating the handwheel 2 that drives the vertical moving plate 14 to move allows the vertical moving plate 14 to move in the vertical direction. In this way, the position of the positioning chuck 15 can be finely adjusted in three-dimensional space to meet the correction requirements of workpieces with different eccentric states.

[0029] In a preferred embodiment, two guide rails 4 are fixedly installed on the top of the mounting platform 1, the top of the horizontal moving plate 11, and the front side of the mounting plate 13, respectively. Two pairs of symmetrically distributed sliders 41 are fixedly installed on the bottom of the horizontal moving plate 11, the bottom of the vertical moving plate 12, and the back side of the vertical moving plate 14, respectively. The sliders 41 are slidably connected to the corresponding guide rails 4.

[0030] Furthermore, when the horizontal moving plate 11, the vertical moving plate 12, and the vertical moving plate 14 move, they drive the slider 41 at their bottom to move along the horizontal direction of the guide rail 4, thereby guiding the movement direction of the horizontal moving plate 11, the vertical moving plate 12, and the vertical moving plate 14, so that the horizontal moving plate 11, the vertical moving plate 12, and the vertical moving plate 14 can move smoothly.

[0031] In a preferred embodiment, a connecting plate 5 is fixedly connected to one end of the threaded sleeve 22. The connecting plate 5 has a plurality of mounting holes a51. The connecting frame 23 has a mounting hole b52 on one side that corresponds to the mounting hole a51. The connecting frame 23 is connected and fixed by bolts passing through the mounting holes a51 and b52.

[0032] Furthermore, when connecting the connecting bracket 23 to the threaded sleeve 22, the connecting bracket 23 is fitted onto the threaded sleeve 22, and the direction of the threaded sleeve 22 is adjusted so that the mounting hole a51 on the connecting plate 5 is aligned with the mounting hole b52 on the connecting bracket 23. Then, a bolt is inserted between the opposing mounting holes a51 and b52, and a nut is screwed onto the protruding end of the bolt, thereby connecting the connecting bracket 23 and the threaded sleeve 22. Example

[0033] Based on Embodiment 1, the solution in Embodiment 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 7 As shown below, see details: The locking mechanism includes: a forward-rotating ratchet 3, a brake stop tooth a31, a reverse-rotating ratchet 32, a brake stop tooth b33, and a placement plate 34. The forward-rotating ratchet 3 is fixedly connected to the external of the screw 21. The brake stop tooth a31 is rotatably connected to one side of the connecting block 2 near the position of the forward-rotating ratchet 3. One end of the brake stop tooth a31 extends into the teeth of the forward-rotating ratchet 3. The reverse-rotating ratchet 32 ​​is fixedly connected to the external of the screw 2. The brake stop tooth b33 is rotatably connected to one side of the connecting block 2 at the position opposite to the brake stop tooth a31. One end of the brake stop tooth b33 extends into the teeth of the reverse-rotating ratchet 32. The placement plate 34 is fixedly installed on one side of the connecting block 2 near the positions of the brake stop teeth a31 and b33.

[0034] Specifically: When adjusting the position of the positioning chuck 15, the brake stop teeth a31 and b33 are opened to both sides, allowing them to fall onto the placement plate 34. The placement plate 34 supports the brake stop teeth a31 and b33, causing them to move out of the teeth inside the clockwise ratchet 3 and counterclockwise ratchet 32, thus engaging the screw 21. Then, the screw 21 is rotated by turning the handwheel 2. After the position of the positioning chuck 15 is adjusted, the brake stop teeth a31 and b33 are rotated downwards to the center, causing one end of each to engage with the teeth inside the clockwise ratchet 3 and counterclockwise ratchet 32, thereby fixing the screw 21 and preventing it from rotating. This avoids the screw 21 from rotating again due to external vibrations, accidental contact, or other factors.

[0035] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A workpiece eccentricity correction device based on a four-jaw chuck, characterized in that, include: Mounting platform (1), above which is provided a horizontal moving plate (11), above which is a vertical moving plate (12), and above which is a mounting plate (13) fixedly installed on the top of the vertical moving plate (12), and on one side of the mounting plate (13) is provided a vertical moving plate (14), and on the front side of the vertical moving plate (14) is a positioning chuck (15). The adjustment mechanism is respectively provided on the mounting platform (1), the transverse moving plate (11) and the mounting plate (13) for adjusting the position of the positioning chuck (15). The adjustment mechanism includes: a connecting block (2), a lead screw (21), a screw sleeve (22), a connecting frame (23) and a handwheel (24). A locking mechanism is provided outside the lead screw (21) to prevent the lead screw (21) from rotating. The locking mechanism includes: a forward-rotating ratchet (3), a brake stop tooth a (31), a reverse-rotating ratchet (32), a brake stop tooth b (33), and a placement plate (34).

2. The workpiece eccentricity correction device based on a four-jaw chuck according to claim 1, characterized in that, Two symmetrically distributed connecting blocks (2) are fixedly installed at the bottom of the mounting platform (1), the top of the horizontal moving plate (11), and the front side of the vertical moving plate (14). A lead screw (21) is rotatably connected between the two opposing connecting blocks (2). A screw sleeve (22) is threaded to the outside of the lead screw (21). A connecting frame (23) is fixedly installed at the bottom of the horizontal moving plate (11), the bottom of the vertical moving plate (12), and the back side of the vertical moving plate (14). One end of the lead screw (21) passes through the connecting block (2) and is fixedly installed with a handwheel (24).

3. The workpiece eccentricity correction device based on a four-jaw chuck according to claim 1, characterized in that, The screw (21) is externally fixedly connected to a forward ratchet (3). A brake stop tooth a (31) is rotatably connected to one side of the connecting block (2) near the forward ratchet (3). One end of the brake stop tooth a (31) extends into the teeth of the forward ratchet (3). A reverse ratchet (32) is externally fixedly connected to the screw. A brake stop tooth b (33) is rotatably connected to one side of the connecting block (2) at a position opposite to the brake stop tooth a (31). One end of the brake stop tooth b (33) extends into the teeth of the reverse ratchet (32). A placement plate (34) is fixedly installed on one side of the connecting block (2) near both the brake stop tooth a (31) and the brake stop tooth b (33).

4. The workpiece eccentricity correction device based on a four-jaw chuck according to claim 1, characterized in that, Two guide rails (4) are fixedly installed on the top of the mounting platform (1), the top of the horizontal moving plate (11), and the front side of the mounting plate (13). Two pairs of symmetrically distributed sliders (41) are fixedly installed on the bottom of the horizontal moving plate (11), the bottom of the vertical moving plate (12), and the back side of the vertical moving plate (14). The sliders (41) are slidably connected to the corresponding guide rails (4).

5. The workpiece eccentricity correction device based on a four-jaw chuck according to claim 4, characterized in that, One end of the threaded sleeve (22) is fixedly connected to a connecting plate (5). The connecting plate (5) has multiple mounting holes a (51). The connecting frame (23) has mounting holes b (52) on one side that correspond to the mounting holes a (51). The connecting frame (23) is connected and fixed by bolts passing through the mounting holes a (51) and the mounting holes b (52).

6. The workpiece eccentricity correction device based on a four-jaw chuck according to claim 1, characterized in that, A bearing (25) is provided at the rotatable connection between the lead screw (21) and the connecting block (2). The inner ring of the bearing (25) is interference-fitted with the lead screw (21), and the outer ring is interference-fitted with the connecting block (2).

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