Eccentric shaft clamp

By designing an eccentric shaft fixture containing a base, a fixing block and a range measuring sensor, the complex problem of existing eccentric shaft fixtures is solved, and fast and accurate eccentric shaft fixing and processing is achieved, which is suitable for mass production.

CN223172449UActive Publication Date: 2025-08-01HUNAN VOCATIONAL COLLEGE OF RAILWAY TECH
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Patent Information

Application Number
CN202421453717.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-24
Publication Date
2025-08-01
Estimated Expiration
2034-06-24

AI Technical Summary

Technical Problem

The clamping process of existing eccentric shaft fixtures is complicated, and it is difficult to quickly and accurately adjust the eccentric distance, resulting in large processing errors and is not suitable for mass production.

Method used

The eccentric shaft fixture design includes a base, fixed block and range measurement sensor. The eccentric distance is adjusted through the V-groove and range measurement sensor, and combined with the use of the display and switch, the eccentric shaft fixation is achieved quickly and accurately.

Benefits of technology

The clamping process of eccentric shafts is simplified, the processing accuracy and efficiency are improved, and it is suitable for mass production.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an eccentric shaft clamp which comprises a base, a fixing block and distance measuring sensors, a hollow round hole is formed in the base, the two distance measuring sensors are oppositely arranged on the two sides in the hollow round hole, a plurality of fixing tables are arranged on the front face of the base, and the distance measuring sensors are arranged on the fixing tables. The fixing block is further arranged on the front face of the base, a V-shaped groove is formed in the side, facing the hollow round hole, of the fixing block, and the bottommost portion of the V-shaped groove, the circle center of the two distance measuring sensors and the circle center of the hollow round hole are located on the same plane. According to the utility model, the adjustable V-shaped block and the bolt are arranged, so that the eccentric distance of the shaft needing to be processed can be freely adjusted.
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Description

Technical Field

[0001] The utility model relates to the technical field of eccentric shaft processing, in particular to an eccentric shaft clamp. Background Art

[0002] A workpiece whose outer circle is parallel to the axis of the outer circle but does not coincide with the axis of the outer circle is called an eccentric shaft. The eccentric shaft is generally fixed to the rotating shaft of the motor through an eccentric hole and performs cam motion when the motor is started.

[0003] Currently, shaft-type workpieces are processed on lathes, and the fixtures on lathes are mostly three-jaw chucks or four-jaw single-action chucks. However, the three-jaw chuck cannot change the axis position and needs to be padded with a shim of pre-selected thickness. After the generatrix and eccentricity are corrected and the workpiece is clamped, it can be processed. The four-jaw single-action chuck requires the use of a small flat plate and a stylus disk, with the needle tip aligned with the eccentric circle line to correct the eccentric circle. By aligning the needle tip with the horizontal line of the outer circle, check from left to right whether the horizontal line is level. The workpiece is then rotated 90° and the other horizontal line is checked using the same method. The clamping foot is then tightened and the workpiece clamping condition is rechecked. After the generatrix and eccentricity are corrected and the workpiece is clamped, it can be processed. These two methods have a complex clamping process, are difficult to align, are prone to errors, and are not suitable for mass production.

[0004] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Utility Model Content

[0005] The main purpose of the utility model is to solve the technical problem of complex clamping of the existing eccentric shaft clamp.

[0006] To achieve the above-mentioned purpose, the utility model provides an eccentric shaft clamp, which is used to fix the eccentric shaft. The eccentric shaft clamp includes: a base, a fixing block and a ranging sensor. The base is provided with a hollow circular hole, and the two ranging sensors are relatively arranged in the hollow circular hole. A plurality of fixing platforms are provided on the front of the base, and the fixing block is also provided on the front of the base. A V-groove is provided on the side of the fixing block facing the hollow circular hole, and the bottom of the V-groove, the two ranging sensors and the center of the hollow circular hole are in the same plane.

[0007] In one embodiment, the eccentric shaft clamp further includes a display, and the display is communicatively connected to the distance measuring sensor.

[0008] In one embodiment, the display is arranged on the front side of the base.

[0009] In one embodiment, the eccentric shaft fixture further includes a switch, and the switch is electrically connected to the distance sensor and the display.

[0010] In one embodiment, a sliding convex rail is provided on the base, and a sliding groove corresponding to the sliding convex rail is provided on the fixed block.

[0011] In one embodiment, the sliding groove is in the shape of a trapezoidal prism.

[0012] In one embodiment, a plurality of fixing platforms are provided on the front surface of the base, and the fixing platforms and the fixed blocks are uniformly arranged around the hollow circular hole.

[0013] In one embodiment, the V-shaped groove is 90°, and the lengths of both sides of the V-shaped groove are equal.

[0014] In one embodiment, the eccentric shaft is fixed by the fixing platform through a first bolt.

[0015] In one embodiment, a preset number of groups of screw holes are provided on the base, and U-shaped grooves corresponding to each group of screw holes are provided on the fixed block. The fixed block is fixed on the base by a second bolt passing through the U-shaped groove and the screw hole.

[0016] The utility model installs and fixes the eccentric shaft through a fixed block provided with a V-shaped groove, and adjusts the eccentricity of the eccentric shaft through a distance measuring sensor, so that the fixing of the eccentric shaft is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 FIG. is a front structural schematic diagram of an eccentric shaft fixture in an embodiment of the present utility model;

[0019] Figure 2 FIG. is a reverse structural schematic diagram of an eccentric shaft fixture in an embodiment of the present utility model;

[0020] Figure 3 FIG. is a three-dimensional structural schematic diagram of an eccentric shaft fixture in an embodiment of the present utility model;

[0021] Figure 4 FIG. is a three-dimensional structural schematic diagram of an eccentric shaft fixture in an embodiment of the present utility model;

[0022] Figure 5 FIG. is a three-dimensional structural schematic diagram of an eccentric shaft fixture in an embodiment of the present utility model;

[0023] Figure 6 This is a schematic structural diagram of a fixing block in an embodiment of the present utility model;

[0024] Figure 7 This is a schematic installation structure diagram of an eccentric shaft fixture in an embodiment of the present utility model;

[0025] Main element symbol description:

[0026] 1 - Base; 2 - Fixing block; 3 - Fixing table; 4 - Distance measuring sensor; 5 - Display; 6 - Switch; 7 - Hollow round hole; 8 - First bolt; 9 - Second bolt; 10 - Sliding groove; 11 - Gasket; 12 - Eccentric shaft. Detailed implementation manners

[0027] In order to better understand the above technical solution, the exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0028] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0029] It should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the coordinate system shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0030] In the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] The present utility model provides an eccentric shaft fixture for fixing an eccentric shaft 12. Referring to Figures 1-5 , in one embodiment, the eccentric shaft fixture includes: a base 1, a fixing block 2 and a distance measuring sensor 4. A hollow circular hole 7 is provided on the base 1, and the two distance measuring sensors 4 are relatively arranged in the hollow circular hole 7. A plurality of fixing platforms 3 are provided on the front surface of the base 1, and the fixing block 2 is further provided on the front surface of the base 1. A V-shaped groove is provided on one side of the fixing block 2 facing the hollow circular hole 7. The bottommost part of the V-shaped groove, the two distance measuring sensors 4 and the center of the hollow circular hole 7 are in the same plane.

[0033] Among them, the base 1 has a thickness and can be embedded on the lathe spindle; the two laser distance measuring sensors 4 are installed on one side of the base 1 facing the hollow circular hole 7. The two distance measuring sensors 4 measure the distance reflected by the eccentric shaft 12 to be processed. Referring to Figure 1 , the bottommost part of the V-shaped groove, the two distance measuring sensors 4 and the center of the hollow circular hole 7 are Figure 1 in the same plane where the dashed line is located in

[0034] Specifically, the eccentric shaft 12 to be processed is placed in the V-shaped groove of the fixing block 2, and the eccentric shaft 12 to be processed is slightly fixed by adjusting the fixing block 2. Then, the distance measuring sensor 4 detects the eccentricity of the eccentric shaft 12 to be processed, and adjusts the fixing block 2 according to the eccentricity until the eccentric shaft 12 reaches a preset value. Then, the fixing block 2 is fixed, and the eccentric shaft 12 to be processed is clamped and fixed by the fixing block 2 and the fixing platform 3 for processing; if an eccentric shaft 12 with the same diameter needs to be processed subsequently, there is no need to adjust the fixing block 2, and only the fixing platform 3 needs to be loosened and tightened again to clamp the eccentric shaft 12.

[0035] In this embodiment, the eccentric shaft 12 is installed and fixed by the fixing block 2 provided with a V-shaped groove, and the eccentricity of the eccentric shaft 12 is adjusted by the distance measuring sensor 4, making the fixing of the eccentric shaft 12 more convenient.

[0036] In one of the embodiments, referring to Figures 1-5, the eccentric shaft fixture further includes a display, and the display is communicatively connected to the distance measuring sensor 4.

[0037] Among them, the display can be an LED display or other types of displays; the display 5 is responsible for displaying the distance measured by the laser distance measuring sensor 4 and displaying the numerical difference of the measured distance (i.e., the eccentricity). If the eccentric shaft 12 is not placed, the diameter size measured by each laser distance measuring sensor 4 is displayed on the display, and the laser distance measuring sensor 4 can be aligned and adjusted through this operation.

[0038] Specifically, the eccentric shaft fixture includes: a base 1, a fixing block 2, a distance measuring sensor 4, and a display. A hollow circular hole 7 is provided on the base 1, and the two distance measuring sensors 4 are oppositely arranged in the hollow circular hole 7. A plurality of fixing platforms 3 are provided on the front surface of the base 1, and the fixing block 2 is further provided on the front surface of the base 1. A V-shaped groove is provided on one side of the fixing block 2 facing the hollow circular hole 7. The bottom of the V-shaped groove, the two distance measuring sensors 4, and the center of the hollow circular hole 7 are in the same plane, and the display is communicatively connected to the distance measuring sensor 4.

[0039] In this embodiment, by setting the display, the eccentricity is displayed, making the adjustment of the eccentric shaft 12 more convenient.

[0040] In one of the embodiments, referring to Figures 1-5 , the display 5 is provided on the front surface of the base 1.

[0041] Among them, referring to Figures 1-5 , in this embodiment, the display is provided between the fixing platform 3 and the fixing block 2, and in other embodiments, it can also be provided at other positions on the base 1.

[0042] Specifically, the eccentric shaft fixture includes: a base 1, a fixing block 2, a distance measuring sensor 4, and a display. A hollow circular hole 7 is provided on the base 1, and the two distance measuring sensors 4 are oppositely arranged in the hollow circular hole 7. A plurality of fixing platforms 3 are provided on the front surface of the base 1, and the fixing block 2 is further provided on the front surface of the base 1. A V-shaped groove is provided on one side of the fixing block 2 facing the hollow circular hole 7. The bottom of the V-shaped groove, the two distance measuring sensors 4, and the center of the hollow circular hole 7 are in the same plane, the display is communicatively connected to the distance measuring sensor 4, and the display 5 is provided on the front surface of the base 1 where the fixing platform 3 is provided.

[0043] In this embodiment, by setting the display 5 on the front surface of the base 1, the measured data is more obvious, making it more convenient to use the eccentric shaft fixture.

[0044] In one of the embodiments, referring toFigures 1-5 The eccentric shaft fixture further includes a switch 6, and the switch 6 is electrically connected to the distance measuring sensor 4 and the display 5.

[0045] Among them, referring to Figures 1-5 , in this embodiment, the switch 6 is arranged near the display 5, and in other embodiments, it can also be arranged at other positions of the base 1.

[0046] Specifically, the eccentric shaft fixture includes: a base 1, a fixing block 2, a distance measuring sensor 4, a display, and a switch 6. A hollow circular hole 7 is provided on the base 1. Two distance measuring sensors 4 are oppositely arranged on both sides inside the hollow circular hole 7. A plurality of fixing platforms 3 are provided on the front surface of the base 1. The fixing block 2 is further provided on the front surface of the base 1. One side of the fixing block 2 facing the hollow circular hole 7 is provided with a V-shaped groove. The center of the V-shaped groove, the distance measuring sensor 4, and the center of the hollow circular hole 7 are in the same plane. The display is communicatively connected to the distance measuring sensor 4, and the switch 6 is electrically connected to the distance measuring sensor 4 and the display 5.

[0047] In this embodiment, by setting the switch 6 to control the display 5 and the distance measuring sensor 4, the use of the eccentric shaft fixture is made more convenient and easier to control.

[0048] In one of the embodiments, referring to Figure 5 and Figure 6 , a sliding convex rail is provided on the base 1, and a sliding groove 10 corresponding to the sliding convex rail is provided on the fixing block 2.

[0049] Among them, the direction of the sliding convex rail is the same as the direction of the V-shaped groove.

[0050] Specifically, the eccentric shaft fixture includes: a base 1, a fixing block 2, and a distance measuring sensor 4. A hollow circular hole 7 is provided on the base 1. Two distance measuring sensors 4 are oppositely arranged inside the hollow circular hole 7. A plurality of fixing platforms 3 are provided on the front surface of the base 1. The fixing block 2 is further provided on the front surface of the base 1. One side of the fixing block 2 facing the hollow circular hole 7 is provided with a V-shaped groove. The bottom of the V-shaped groove, the two distance measuring sensors 4, and the center of the hollow circular hole 7 are in the same plane. A sliding convex rail is provided on the base 1, and a sliding groove 10 corresponding to the sliding convex rail is provided on the fixing block 2.

[0051] In this embodiment, the movable connection between the base 1 and the fixing block 2 is achieved by setting the sliding convex rail and the sliding groove 10.

[0052] In one of the embodiments, referring to Figure 6 , the sliding groove 10 is in the shape of a trapezoidal prism.

[0053] Among them, the sliding convex rail corresponding to the sliding groove 10 is also in the shape of a trapezoidal prism, and the front surface with the smallest area in the trapezoidal prism of the sliding convex rail is connected to the base 1.

[0054] Specifically, the eccentric shaft fixture includes: a base 1, a fixed block 2, and a distance measuring sensor 4. A hollow circular hole 7 is provided on the base 1. The two distance measuring sensors 4 are oppositely arranged in the hollow circular hole 7. A plurality of fixed platforms 3 are provided on the front surface of the base 1. The fixed block 2 is also provided on the front surface of the base 1. One side of the fixed block 2 facing the hollow circular hole 7 is provided with a V-shaped groove. The bottommost part of the V-shaped groove, the two distance measuring sensors 4, and the center of the hollow circular hole 7 are in the same plane. A trapezoidal prism-shaped sliding convex rail is provided on the base 1, and a sliding groove 10 corresponding to the sliding convex rail is provided on the fixed block 2.

[0055] In this embodiment, by providing the sliding groove 10 and the sliding convex rail in the shape of a trapezoidal prism, the connection between the base 1 and the fixed block 2 is not easily misaligned.

[0056] In one of the embodiments, referring to Figures 1-5 , a plurality of fixed platforms 3 are provided on the front surface of the base 1, and the fixed platforms 3 and the fixed block 2 are evenly arranged around the hollow circular hole.

[0057] Among them, referring to Figures 1-5 , in this embodiment, the fixed platform 3 is set to be in the shape of a cuboid, and in other embodiments, the fixed platform 3 can also be set to be in the shape of a cube, a cylinder, a triangular prism, etc., which can be specifically set according to different requirements.

[0058] Specifically, the eccentric shaft fixture includes: a base 1, a fixed block 2, and a distance measuring sensor 4. A hollow circular hole 7 is provided on the base 1. The two distance measuring sensors 4 are oppositely arranged in the hollow circular hole 7. A plurality of fixed platforms 3 are provided on the front surface of the base 1. The fixed block 2 is also provided on the front surface of the base 1. One side of the fixed block 2 facing the hollow circular hole 7 is provided with a V-shaped groove. The bottommost part of the V-shaped groove, the two distance measuring sensors 4, and the center of the hollow circular hole 7 are in the same plane. A plurality of fixed platforms 3 are provided on the front surface of the base 1, and the fixed platforms 3 and the fixed block 2 are evenly arranged around the hollow circular hole.

[0059] In this embodiment, by providing a plurality of fixed platforms 3, the fixation of the eccentric shaft 12 is more stable.

[0060] In one of the embodiments, referring to Figures 1-6 , the V-shaped groove is 90°, and the lengths of both sides of the V-shaped groove are equal.

[0061] Specifically, the eccentric shaft fixture includes: a base 1, a fixing block 2, and a distance measuring sensor 4. A hollow circular hole 7 is provided on the base 1. Two of the distance measuring sensors 4 are oppositely arranged in the hollow circular hole 7. A plurality of fixing platforms 3 are provided on the front surface of the base 1. The fixing block 2 is also provided on the front surface of the base 1. A V-shaped groove is provided on one side of the fixing block 2 facing the hollow circular hole 7. The bottommost part of the V-shaped groove, the two distance measuring sensors 4, and the center of the hollow circular hole 7 are in the same plane. The V-shaped groove is 90°, and the lengths of both sides of the V-shaped groove are equal.

[0062] In this embodiment, by setting the V-shaped groove to 90° and the lengths of both sides of the V-shaped groove being equal, the axis of the eccentric shaft 12 to be machined is always kept centered.

[0063] In one of the embodiments, referring to Figures 1-5 , the fixing platform 3 fixes the eccentric shaft 12 through the first bolt 8.

[0064] Among them, each fixing platform 3 is provided with a first bolt 8. Referring to Figure 7 , the eccentric shaft 12 passes through the hollow circular hole 7 and is fixed on the base 1 through the first bolt 8 on the fixing platform 3 and the fixing block 2.

[0065] Specifically, the eccentric shaft fixture includes: a base 1, a fixing block 2, and a distance measuring sensor 4. A hollow circular hole 7 is provided on the base 1. Two of the distance measuring sensors 4 are oppositely arranged in the hollow circular hole 7. A plurality of fixing platforms 3 are provided on the front surface of the base 1. The fixing block 2 is also provided on the front surface of the base 1. A V-shaped groove is provided on one side of the fixing block 2 facing the hollow circular hole 7. The bottommost part of the V-shaped groove, the two distance measuring sensors 4, and the center of the hollow circular hole 7 are in the same plane. The fixing platform 3 fixes the eccentric shaft 12 through the first bolt 8.

[0066] In this embodiment, a movable bolt is provided to make the fixing of the eccentric shaft 12 more convenient.

[0067] In one of the embodiments, referring to Figures 1-6 , a preset number of groups of screw holes are provided on the base 1. A U-shaped groove corresponding to each group of screw holes is provided on the fixing block 2. The second bolt 9 passes through the U-shaped groove and the screw holes to fix the fixing block 2 on the base 1.

[0068] Among them, the opening of the U-shaped groove is opposite to the direction in which the fixing block 2 is directly facing the hollow circular hole 7; in this embodiment, referring to Figures 1-5, two sets of screw holes and U-shaped grooves corresponding to each set of screws are provided. The number of screw holes in each set is 3. In other embodiments, other numbers of sets of screw holes and corresponding U-shaped grooves can also be set. For example, 1 set of screw holes and U-shaped grooves corresponding to 1 set of screw holes, 3 sets of screw holes and U-shaped grooves corresponding to each set of screws, 4 sets of screw holes and U-shaped grooves corresponding to each set of screws, etc. The number of screw holes in each set can also be set according to requirements. When setting one set of screw holes, the number of screw holes should be greater than 1.

[0069] Specifically, the eccentric shaft fixture includes: a base 1, a fixed block 2, and a distance measuring sensor 4. A hollow round hole 7 is provided on the base 1. Two of the distance measuring sensors 4 are oppositely arranged in the hollow round hole 7. A plurality of fixed platforms 3 are provided on the front surface of the base 1. The fixed block 2 is also provided on the front surface of the base 1. One side of the fixed block 2 facing the hollow round hole 7 is provided with a V-shaped groove. The bottommost part of the V-shaped groove, the two distance measuring sensors 4, and the center of the hollow round hole 7 are in the same plane. A plurality of sets of screw holes are provided on the base 1. U-shaped grooves corresponding to each set of the screw holes are provided on the fixed block 2. A second bolt 9 passes through the U-shaped groove and the screw hole to fix the fixed block 2 on the base 1.

[0070] In this embodiment, by providing a plurality of sets of screw holes and U-shaped grooves corresponding to each set of screw holes, the fixed block 2 can move flexibly, making the adjustment and fixation of the eccentric shaft 12 more convenient.

[0071] In one of the embodiments, referring to Figures 1-5 , the second bolt 9 passes through a gasket 11, the U-shaped groove and the screw hole to fix the fixed block 2 on the base 1.

[0072] Specifically, the eccentric shaft fixture includes: a base 1, a fixed block 2, and a distance measuring sensor 4. A hollow round hole 7 is provided on the base 1. Two of the distance measuring sensors 4 are oppositely arranged in the hollow round hole 7. A plurality of fixed platforms 3 are provided on the front surface of the base 1. The fixed block 2 is also provided on the front surface of the base 1. One side of the fixed block 2 facing the hollow round hole 7 is provided with a V-shaped groove. The bottommost part of the V-shaped groove, the two distance measuring sensors 4, and the center of the hollow round hole 7 are in the same plane. A plurality of sets of screw holes are provided on the base 1. U-shaped grooves corresponding to each set of the screw holes are provided on the fixed block 2. The second bolt 9 passes through the gasket 11, the U-shaped groove and the screw hole to fix the fixed block 2 on the base 1.

[0073] In this embodiment, by combining the gasket 11 and the second bolt 9 to fix the base 1 and the fixed block 2, the fixing effect of the base 1 and the fixed block 2 is better, and it is not easy to slide.

[0074] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. An eccentric shaft fixture, characterized in that, The eccentric shaft fixture includes: a base, a fixing block, and a ranging sensor. A hollow round hole is provided on the base. The two ranging sensors are relatively arranged in the hollow round hole. A plurality of fixing platforms are provided on the front surface of the base. The fixing block is further provided on the front surface of the base. A V-shaped groove is provided on one side of the fixing block facing the hollow round hole. The bottom of the V-shaped groove, the two ranging sensors, and the center of the hollow round hole are in the same plane.

2. The eccentric shaft fixture according to claim 1, characterized in that, The eccentric shaft fixture further includes a display, and the display is communicatively connected to the ranging sensor.

3. The eccentric shaft fixture according to claim 2, characterized in that, The display is provided on the front surface of the base.

4. The eccentric shaft fixture according to claim 2, characterized in that, The eccentric shaft fixture further includes a switch, and the switch is electrically connected to the ranging sensor and the display.

5. The eccentric shaft fixture according to claim 1, characterized in that, A sliding convex rail is provided on the base, and a sliding groove corresponding to the sliding convex rail is provided on the fixing block.

6. The eccentric shaft fixture according to claim 5, wherein The sliding groove is in the shape of a trapezoidal prism.

7. The eccentric shaft fixture according to claim 1, wherein A plurality of fixing platforms are provided on the front surface of the base, and the fixing platforms and the fixing block are evenly arranged around the hollow round hole.

8. The eccentric shaft fixture according to claim 1, wherein, The V-shaped groove is 90°, and the lengths of both sides of the V-shaped groove are equal.

9. The eccentric shaft fixture according to claim 1, wherein The eccentric shaft is fixed by the first bolt through the fixing platform.

10. The eccentric shaft fixture according to claim 1, characterized in that, A preset number of groups of screw holes are provided on the base, and a U-shaped groove corresponding to each group of screw holes is provided on the fixing block. The fixing block is fixed on the base by the second bolt passing through the U-shaped groove and the screw hole.