Clamp for eccentric part

Abstract

The utility model relates to the technical field of machining, in particular to a clamp for an eccentric part, which comprises an adapter and a positioning mechanism, the adapter is provided with a limit disc and an adapter part, the limit disc is provided with a positioning groove, the adapter part is arranged on one side of the limit disc deviating from the positioning groove and is coaxial with an eccentric shaft of the eccentric part, and the positioning mechanism is arranged on the adapter part. The positioning mechanism comprises a positioning piece and a positioning assembly, the positioning piece is installed on the limiting disc and connected with the base in the positioning groove in an inserted mode, one end of the positioning assembly is connected with the limiting disc, and the other end of the positioning assembly is used for providing acting force for abutting the base against the limiting disc. According to the clamp for the eccentric part, horizontal displacement of the base is limited through matching of the positioning part and the positioning groove, the positioning accuracy of the eccentric shaft is guaranteed, the base and the limiting disc are tightly abutted through abutting acting force provided by the positioning assembly, and therefore the eccentric part is accurately positioned, and the positioning accuracy is improved. The purpose of improving the machining precision and the machining quality of the eccentric shaft of the eccentric part is achieved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a fixture for eccentric parts. Background Technology

[0002] In the field of machining, eccentric parts are common components, typically consisting of a base and an eccentric shaft, with the centerlines of the base and eccentric shaft arranged parallel to each other. When machining the eccentric shaft of an eccentric part, a fixture is required to stably hold it to ensure machining accuracy and operational safety. In traditional technology, the fixture usually directly clamps the side wall of the base of the eccentric part. However, this method of clamping the side wall of the base makes it difficult to position the eccentric shaft relative to the base, resulting in insufficient positioning accuracy of the fixture for the eccentric part. This can easily lead to deviations in the fit between the eccentric shaft and the machining equipment, affecting machining quality. At the same time, the application of clamping force is not uniform and stable enough, and the base may rotate relative to the eccentric shaft during machining, which not only affects machining accuracy but may also cause safety accidents. There are technical problems that make it difficult to guarantee the positioning accuracy and machining accuracy of eccentric parts. Utility Model Content

[0003] Therefore, it is necessary to provide a fixture for eccentric parts to address the technical problem of the difficulty in ensuring the positioning and machining accuracy of eccentric parts.

[0004] A clamp for holding an eccentric component, the eccentric component including a base and an eccentric shaft, the center lines of the base and the eccentric shaft being arranged parallel to each other, the clamp for the eccentric component including: an adapter seat and a positioning mechanism, the adapter seat having a limiting plate and an adapter portion, the limiting plate having a positioning groove for mounting the base of the eccentric component, the adapter portion being disposed on the side of the limiting plate opposite to the positioning groove and coaxially arranged with the eccentric shaft of the eccentric component, the positioning mechanism including a positioning member and a positioning assembly, the positioning member being mounted on the limiting plate and inserted into the base in the positioning groove, one end of the positioning assembly being connected to the limiting plate, and the other end of the positioning assembly being used to provide a force for the base to abut against the limiting plate.

[0005] In one embodiment, the positioning assembly includes a support rod, a pressure plate, a support member, and a pressure rod. The support rod is connected to the limiting plate, the pressure plate is movably connected to the support rod, and the end of the pressure plate away from the support rod abuts against the eccentric workpiece. The support member is disposed on the support rod and located between the pressure plate and the limiting plate. The pressure rod is disposed between the support rod and the positioning groove, passes through the pressure plate, and is connected to the limiting plate. The pressure rod is used to provide the force for the pressure plate to abut against the support member and the eccentric workpiece.

[0006] In one embodiment, the pressure plate includes a plate body and a pressure tongue. The plate body is provided with a sliding hole that is movably connected to the support rod, and the pressure tongue abuts against the eccentric workpiece.

[0007] In one embodiment, the thickness of the depressor is thinner than the thickness of the plate.

[0008] In one embodiment, the pressure tongue gradually retracts toward the positioning groove.

[0009] In one embodiment, the plate is provided with a through hole for the pressure rod to pass through, and the through hole is a strip-shaped hole.

[0010] In one embodiment, the pressure bar includes a rod body and a pressure block. The rod body is connected to the limiting plate, and the pressure block is disposed at the end of the rod body away from the limiting plate and abuts against the pressure plate.

[0011] In one embodiment, there are multiple positioning components, each positioned around the mounting slot.

[0012] In one embodiment, the positioning mechanism further includes a retaining component mounted on the limiting plate and extending to the positioning member, the retaining component being used to provide a force for the eccentric workpiece to engage with the positioning member.

[0013] In one embodiment, the number of the positioning elements is at least two, and the at least two positioning elements are spaced apart.

[0014] The beneficial effects of the eccentric part fixture provided in this application are as follows: the eccentric part base is installed and positioned by using the positioning groove of the adapter seat, the positioning component of the positioning mechanism is inserted into the base in the positioning groove, and the adapter part is coaxially set with the eccentric shaft. The cooperation between the positioning component and the positioning groove restricts the horizontal displacement of the base, ensuring the positioning accuracy of the eccentric shaft. The holding force provided by the positioning component makes the base and the limiting plate tightly abut against each other, thereby accurately positioning the eccentric part. This effectively improves the stability of the eccentric shaft of the eccentric part during the processing, reduces the processing error and scrap rate caused by inaccurate positioning and unstable clamping of the eccentric part, and achieves the purpose of increasing the processing accuracy and processing quality of the eccentric shaft of the eccentric part. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the clamp used to fix the eccentric part according to the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the fixture for the eccentric component is shown.

[0017] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the fixture used for the eccentric component.

[0018] The meanings of the numbers in the attached diagram are as follows:

[0019] 100. Fixtures for eccentric parts;

[0020] 10. Adapter; 20. Positioning mechanism; 50. Limiting plate; 51. Positioning groove; 60. Adapter part; 70. Positioning component; 80. Positioning assembly; 81. Support rod; 82. Pressure plate; 83. Support component; 84. Pressure rod; 85. Plate; 86. Pressure tongue; 87. Through hole; 88. Rod body; 89. Pressure block; 90. Retention assembly;

[0021] 200. Eccentric component; 201. Base; 202. Eccentric shaft. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] In the description of this utility model, 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., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] like Figures 1 to 2 As shown, the clamp 100 for the eccentric component of this utility model is used to clamp the eccentric component 200. The eccentric component 200 includes a base 201 and an eccentric shaft 202, and the center lines of the base 201 and the eccentric shaft 202 are arranged in parallel.

[0029] like Figure 2As shown, the eccentric component clamp 100 includes: an adapter 10 and a positioning mechanism 20. The adapter 10 is provided with a limiting plate 50 and an adapter 60. The limiting plate 50 has a positioning groove 51 for mounting the base 201 of the eccentric component 200. The adapter 60 is located on the side of the limiting plate 50 opposite to the positioning groove 51 and is coaxially arranged with the eccentric shaft 202 of the eccentric component 200. The positioning mechanism 20 includes a positioning member 70 and a positioning assembly 80. The positioning member 70 is mounted on the limiting plate 50 and inserted into the base 201 in the positioning groove 51. One end of the positioning assembly 80 is connected to the limiting plate 50, and the other end of the positioning assembly 80 provides a force for the base 201 to abut against the limiting plate 50. The positioning groove 51 of the adapter 10 is used to position the eccentric component 200. The base 201 is installed and positioned. The positioning component 70 of the positioning mechanism 20 is inserted into the base 201 in the positioning groove 51. The adapter 60 is coaxially set with the eccentric shaft 202, which ensures the positioning accuracy of the eccentric shaft 202. The cooperation between the positioning component 70 and the positioning groove 51 restricts the horizontal displacement of the base 201. The holding force provided by the positioning component 80 makes the base 201 tightly abut against the limiting plate 50, thereby accurately positioning the eccentric component 200. This effectively improves the stability of the eccentric shaft 202 of the eccentric component 200 during the processing, reduces the processing error and scrap rate caused by inaccurate positioning and unstable clamping of the eccentric component 200, and achieves the purpose of increasing the processing accuracy and processing quality of the eccentric shaft 202 of the eccentric component 200.

[0030] The following text, combined with Figures 1 to 3 The above-mentioned eccentric fixture 100 will be further explained.

[0031] To improve the positioning accuracy of the eccentric component 200, such as Figure 2 As shown, the positioning element 70 is a pin. There are at least two positioning elements 70, which are spaced apart. The spaced positioning elements 70 can position the base 201 from multiple positions to form a stable positioning structure, which restricts the rotation and movement of the base 201 on the limiting plate 50. Compared with a single positioning element 70, it can provide stronger positioning capability, ensure the positional accuracy of the base 201 during the processing, and thus ensure the coaxiality of the eccentric shaft 202 and the adapter 60, thereby improving the positioning accuracy of the eccentric element 200.

[0032] To improve the stability and reliability of clamping, such as Figure 3As shown, the positioning assembly 80 includes a support rod 81, a pressure plate 82, a support member 83, and a pressure rod 84. The support rod 81 is connected to the limiting plate 50, and the pressure plate 82 is movably connected to the support rod 81. The end of the pressure plate 82 away from the support rod 81 abuts against the eccentric workpiece. The support member 83 is disposed on the support rod 81 and located between the pressure plate 82 and the limiting plate 50. The pressure rod 84 is disposed between the support rod 81 and the positioning groove 51, and passes through the pressure plate 82 and is connected to the limiting plate 50. The pressure rod 84 is used to provide the abutting force between the pressure plate 82, the support member 83, and the eccentric workpiece. The positioning assembly 80, consisting of the support rod 81 and the pressure rod 84, provides a support base for the pressure plate 82. The pressure plate 82 can move on the support rod 81 and can be adjusted according to the shape of the eccentric part 200 to better contact the eccentric workpiece. The support member 83 provides support force to the pressure plate 82, so that the pressure plate 82 can remain stable when it abuts against the eccentric workpiece. The pressure rod 84, through connection with the limiting plate 50 and passing through the pressure plate 82, can apply force to make the pressure plate 82 tightly abut against the eccentric workpiece, thereby uniformly applying clamping force to the eccentric workpiece and achieving the purpose of improving the stability and reliability of clamping.

[0033] To improve the clamping stability and reliability of the pressure plate 82, such as Figure 3 As shown, the pressure plate 82 includes a plate body 85 and a pressure tongue 86. The plate body 85 is provided with a sliding hole that is movably connected to the support rod 81. The pressure tongue 86 abuts against the eccentric workpiece. The plate body 85 is provided with a through hole 87 for the pressure rod 84 to pass through. The through hole 87 is a strip-shaped hole. The pressure plate 82 is used to set up the plate body 85 and the pressure tongue 86. The plate body 85 is movably connected to the support rod 81 through the sliding hole, so that the pressure plate 82 can slide flexibly on the support rod 81. It is convenient to adjust the contact position and angle between the pressure tongue 86 and the eccentric workpiece. The pressure tongue 86 is specifically used to abut against the eccentric workpiece. It can be designed according to the surface shape of the eccentric workpiece, which improves the fit with the eccentric workpiece, thereby enhancing the clamping effect and enabling more precise application of the abutting force to the eccentric workpiece, so as to improve the clamping stability and reliability of the pressure plate 82.

[0034] To improve clamping stability and adaptability to eccentric workpieces of different shapes, such as Figure 3 As shown, the thickness of the pressure tongue 86 is thinner than that of the plate 85. The thinner thickness of the pressure tongue 86 gives it a certain degree of elasticity, which allows it to better adapt to the slight irregularities on the surface of the eccentric workpiece when it is held against it. This increases the contact area with the eccentric workpiece, making the clamping force distribution more uniform. It avoids the problem of excessive local pressure caused by the pressure tongue 86 being too hard, which could damage the surface of the eccentric workpiece. This achieves the purpose of improving the stability of clamping and the adaptability to eccentric workpieces of different shapes.

[0035] To enhance the clamping effect of the pressure tongue 86 on the eccentric part 200, such as Figure 2As shown, the pressure tongue 86 gradually contracts towards the positioning groove 51. This design allows the pressure tongue 86 to accurately abut against the eccentric workpiece. At the same time, this contracting shape also guides the pressure tongue 86 to better fit the surface of the eccentric workpiece, improving the accuracy and stability of the abutment, ensuring the effective transmission of clamping force, and achieving the purpose of enhancing the clamping effect of the pressure tongue 86 on the eccentric part 200.

[0036] To improve the support stability and reliability of the compression bar 84, such as Figure 3 As shown, the pressure rod 84 includes a rod body 88 and a pressure block 89. The rod body 88 is connected to the limiting plate 50, and the pressure block 89 is located at the end of the rod body 88 away from the limiting plate 50 and abuts against the pressure plate 82. The pressure rod 84 is provided with a rod body 88 and a pressure block 89. The rod body 88 is used to connect to the limiting plate 50 to ensure the stability of the pressure rod 84. The pressure block 89 abuts against the pressure plate 82, increasing the contact area between the pressure rod 84 and the pressure plate 82. This allows the force applied by the pressure rod 84 to be evenly transmitted to the pressure plate 82, avoiding the problem of local stress concentration caused by too small a contact area. This ensures that the pressure plate 82 can evenly apply a supporting force to the eccentric workpiece, thereby improving the support stability and reliability of the pressure rod 84.

[0037] To improve the clamping stability and positioning accuracy of the fixture for the eccentric part 200, such as Figures 2 to 3 As shown, there are multiple positioning components 80, each positioned around the mounting slot. This arrangement of multiple positioning components 80 around the mounting slot is suitable for machining scenarios with high clamping requirements. It can apply a resisting force to the base 201 of the eccentric part 200 from multiple directions, making the clamping force on the base 201 more evenly distributed. This avoids the problem of tilting or loosening of the eccentric part 200 caused by insufficient clamping force in one direction or uneven force distribution, thereby improving the clamping stability and positioning accuracy of the fixture on the eccentric part 200.

[0038] To improve safety and reliability during processing, such as Figure 2 As shown, the positioning mechanism 20 also includes a retaining component 90, which is mounted on the limiting plate 50 and extends to the positioning member 70. The retaining component 90 is used to provide the force for the eccentric workpiece to be inserted into the positioning member 70. The structure of the retaining component 90 is the same as that of the positioning component 80, and will not be described in detail here. The retaining component 90 provides an additional force for the insertion of the positioning member 70 into the base 201 of the eccentric workpiece, so that the positioning member 70 can be more firmly inserted into the base 201, preventing the positioning member 70 from separating from the base 201 due to vibration during the processing. This further improves the positioning accuracy and clamping stability of the eccentric member 200, thereby achieving the purpose of improving the safety and reliability of the processing.

[0039] When using the eccentric component 200 provided in this application: the adapter 60 of the adapter 10 is fixed by a three-jaw chuck. Then, the base 201 of the eccentric component 200 is placed into the positioning groove 51 of the limiting plate 50, so that the positioning component 70 is inserted into the pin hole of the base 201. Then, by adjusting the pressure rods 84 of each positioning component 80, the pressure tongue 86 of the pressure plate 82 is pressed against the eccentric workpiece. Through the cooperation of the support 83 and the pressure rods 84, a uniform pressing force is provided, so that the base 201 and the limiting plate 50 are tightly fitted, thus completing the clamping of the eccentric component 200.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A clamp for holding an eccentric component, the eccentric component comprising a base and an eccentric shaft, the centerlines of the base and the eccentric shaft being arranged parallel to each other, characterized in that, The clamp for the eccentric component includes: an adapter seat and a positioning mechanism. The adapter seat is provided with a limiting plate and an adapter part. The limiting plate is provided with a positioning groove for mounting the base of the eccentric component. The adapter part is located on the side of the limiting plate opposite to the positioning groove and is coaxially arranged with the eccentric shaft of the eccentric component. The positioning mechanism includes a positioning element and a positioning assembly. The positioning element is mounted on the limiting plate and is inserted into the base in the positioning groove. One end of the positioning assembly is connected to the limiting plate, and the other end of the positioning assembly is used to provide a force for the base to resist the limiting plate.

2. The fixture for eccentric parts according to claim 1, characterized in that, The positioning assembly includes a support rod, a pressure plate, a support member, and a pressure rod. The support rod is connected to the limiting plate, and the pressure plate is movably connected to the support rod. The end of the pressure plate away from the support rod abuts against the eccentric workpiece. The support member is disposed on the support rod and located between the pressure plate and the limiting plate. The pressure rod is disposed between the support rod and the positioning groove, passes through the pressure plate, and is connected to the limiting plate. The pressure rod is used to provide the force for the pressure plate to abut against the support member and the eccentric workpiece.

3. The fixture for eccentric parts according to claim 2, characterized in that, The pressure plate includes a plate body and a pressure tongue. The plate body is provided with a sliding hole that is movably connected to the support rod. The pressure tongue abuts against the eccentric workpiece.

4. The fixture for eccentric parts according to claim 3, characterized in that, The thickness of the depressor is thinner than the thickness of the plate.

5. The fixture for eccentric parts according to claim 3, characterized in that, The pressure tongue gradually retracts towards the positioning groove.

6. The fixture for eccentric parts according to claim 3, characterized in that, The plate is provided with a through hole for the pressure rod to pass through, and the through hole is a strip-shaped hole.

7. The fixture for eccentric parts according to claim 2, characterized in that, The pressure bar includes a bar body and a pressure block. The bar body is connected to the limiting plate, and the pressure block is located at the end of the bar body away from the limiting plate and abuts against the pressure plate.

8. The fixture for eccentric parts according to claim 1, characterized in that, The number of positioning components is multiple, and each positioning component is arranged around the mounting slot.

9. The fixture for eccentric parts according to claim 1, characterized in that, The positioning mechanism further includes a retaining component, which is mounted on the limiting plate and extends to the positioning member. The retaining component is used to provide a force for the eccentric workpiece to insert into the positioning member.

10. The fixture for eccentric parts according to claim 1, characterized in that, The number of positioning elements is at least two, and the at least two positioning elements are arranged at intervals.

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