Milling clamp for machining eccentric bearing bush
By combining the design of the spindle body, positioning plate and kit, the problem of insufficient positioning accuracy and stability of traditional fixtures is solved, realizing high-precision machining and stable clamping of eccentric bearings, and improving machining efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional fixtures have limited positioning accuracy and poor clamping stability when machining eccentric bearings. They are prone to loosening or displacement of the raw material due to cutting forces and vibrations, making it difficult to machine it into the specified shape.
The precise fit of the mandrel body, the first positioning plate, the second positioning plate, the first positioning kit, and the second positioning kit, combined with the spherical washer and nut, forms a stable clamping area, ensuring accurate positioning and uniform clamping of the eccentric bearing material.
It improves machining accuracy and clamping stability, ensuring accurate positioning of eccentric bearing raw materials during processing, meeting equipment requirements, and improving processing efficiency and product quality.
Smart Images
Figure CN224115663U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of machine tool processing technology, and in particular to a milling fixture for machining eccentric bearing bushes. Background Technology
[0002] In the field of machining, eccentric bearings are widely used in various mechanical equipment, such as engines, pumps, and compressors, to support and position shaft components that rotate eccentrically. Due to the high requirements for the shape and dimensional accuracy of eccentric bearings, their machining process is often quite complex and requires specialized fixtures to ensure machining accuracy and efficiency.
[0003] When machining eccentric bearing bushes from raw materials, clamping mechanisms are usually required to hold the raw materials. However, these fixtures have many shortcomings in use. On the one hand, the positioning accuracy of traditional fixtures is limited, making it difficult to guarantee the machining accuracy of eccentric bearing bushes. On the other hand, the clamping stability of traditional fixtures is poor, and they are easily affected by cutting forces, vibrations, and other factors during the machining process, which can cause the raw materials to loosen or shift, thus making it impossible to machine the raw materials into eccentric bearing bushes of the specified shape. Utility Model Content
[0004] This application provides a milling fixture for machining eccentric bearing bushes, which solves the above-mentioned technical problems.
[0005] This application provides a milling fixture for machining eccentric bearing bushes, comprising: a spindle body, a first positioning plate, a second positioning plate, a first positioning kit, a second positioning kit, a spherical washer, and a nut;
[0006] The first positioning plate is installed on one side of the mandrel body, and the second positioning plate is installed on the other side of the mandrel body. The spherical washer is installed on one side of the second positioning plate, and one side of the spherical washer contacts the nut. The nut is installed on the mandrel body. The first positioning kit is installed on the first positioning plate, and the second positioning kit is installed on the second positioning plate. The first positioning plate and the second positioning plate, together with the first positioning kit and the second positioning kit, form a clamping area. The clamping area is used to clamp the raw material of the eccentric bearing.
[0007] Optionally, the first positioning plate is provided with a first slot, and a first pin is provided on one side of the mandrel body. When the first positioning plate is installed on one side of the mandrel body, the first pin cooperates with the first slot.
[0008] Optionally, the second positioning plate is provided with a second slot, and a second pin is provided on one side of the mandrel body. When the second positioning plate is installed on the other side of the mandrel body, the second pin cooperates with the second slot.
[0009] Optionally, the first positioning plate is provided with a plurality of first slots, and the plurality of first slots are equally spaced apart, and the first positioning plate is divided into a plurality of first positioning plates through the first slots.
[0010] Optionally, the second positioning plate is provided with a plurality of second slots, which are equally spaced apart, and the second positioning plate is divided into a plurality of second positioning plates by the second slots.
[0011] Optionally, the first slot and the second slot correspond to each other.
[0012] Optionally, the first positioning kit includes a plurality of first clamping bolts, and a first threaded hole is provided at the middle position of the first positioning plate, and the first clamping bolts are installed in the first threaded hole.
[0013] Optionally, the second positioning kit includes a plurality of second clamping bolts, and a second threaded hole is provided at the middle position of the second positioning plate, and the second clamping bolts are installed in the second threaded hole.
[0014] Optionally, the bottom of the first slot and the second slot are lower than the inner arc surface of the eccentric bearing material.
[0015] As can be seen from the above technical solutions, this application has the following advantages:
[0016] 1. The milling fixture of this application forms a stable clamping area through the precise cooperation of the spindle body, the first positioning plate, the second positioning plate, the first positioning kit, and the second positioning kit. The clamping area ensures the accurate positioning of the eccentric bearing material during the processing, which greatly improves the processing accuracy.
[0017] 2. The spherical washer installed on one side of the second positioning plate cooperates with the nut to provide good self-adaptability and adjustability. During the processing, the spherical washer and nut can adjust the clamping force to ensure that the raw material is subjected to a uniform and stable clamping force, effectively preventing loosening or displacement caused by cutting force or vibration.
[0018] 3. Improved positioning accuracy and clamping stability of milling fixtures, making it easier to process raw materials into eccentric bearings of specified shapes, thereby meeting equipment and market demands, and improving processing efficiency and product quality. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the milling fixture for processing eccentric bearing bushes, on which the eccentric bearing bush material is placed;
[0020] Figure 2This is a three-dimensional structural diagram of the milling fixture for machining eccentric bearing bushes according to this application;
[0021] Figure 3 This is a side view of the milling fixture used for machining eccentric bearing bushes according to this application;
[0022] Figure 4 yes Figure 3 A sectional view of section AA. Detailed Implementation
[0023] In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and other terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.
[0024] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0025] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0026] Furthermore, the structures, proportions, sizes, etc., drawn in the accompanying drawings of this application are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.
[0027] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0028] It should be noted that the eccentric bearing bushes manufactured by the milling fixture used in this application are preferably applied to centerless grinding machines, but can also be applied to other grinding machines, without specific limitations.
[0029] When processing raw materials for eccentric bearings into sheet-shaped eccentric bearings, a clamping mechanism is usually required to hold the raw materials. However, this type of fixture has many shortcomings in use. On the one hand, the positioning accuracy of traditional fixtures is limited, making it difficult to guarantee the processing accuracy of eccentric bearings. On the other hand, the clamping stability of traditional fixtures is poor, and they are easily affected by cutting forces, vibrations, and other factors during processing, which can cause the raw materials to loosen or shift, thus making it impossible to process the raw materials into the eccentric bearings of the specified shape.
[0030] Based on this, this application provides a milling fixture for machining eccentric bearing bushes. Through the precise cooperation of the spindle body, the first positioning plate, the second positioning plate, the first positioning kit, and the second positioning kit, a stable clamping area is formed. The clamping area ensures the accurate positioning of the eccentric bearing bush material during the machining process, greatly improving the machining accuracy.
[0031] Please see Figures 1 to 4 This application provides a milling fixture for machining eccentric bearing bushes, including: a spindle body 1, a first positioning plate 2, a second positioning plate 3, a first positioning kit, a second positioning kit, a spherical washer 9, and a nut 8;
[0032] The first positioning plate 2 is installed on one side of the mandrel body 1, and the second positioning plate 3 is installed on the other side of the mandrel body 1. The spherical washer 9 is installed on one side of the second positioning plate 3. One side of the spherical washer 9 contacts the nut 8. The nut 8 is installed on the mandrel body 1. The first positioning kit is installed on the first positioning plate 2, and the second positioning kit is installed on the second positioning plate 3. The first positioning plate 2 and the second positioning plate 3, together with the first positioning kit and the second positioning kit, form a clamping area. The clamping area is used to clamp the raw material of the eccentric bearing.
[0033] First, the function and purpose of each component in this application will be explained:
[0034] Mandrel body 1: Mandrel body 1 is the core component of the milling fixture. As the supporting structure of the milling fixture, it supports all other components.
[0035] First positioning plate 2 and second positioning plate 3: The first positioning plate 2 and the second positioning plate 3 are respectively installed on both sides of the mandrel body 1. Their main function is to clamp the raw material of the eccentric bearing and prevent it from moving or rotating during processing. When the nut 8 is tightened, the pressure is evenly applied to the second positioning plate 3 through the transmission action of the spherical washer 9. Under the action of the first positioning plate 2, the first positioning kit and the second positioning kit, the raw material of the eccentric bearing is firmly clamped.
[0036] Spherical washer 9: The spherical washer 9 is installed between the second positioning plate 3 and the nut 8. When the nut 8 is tightened, the spherical washer 9 acts on the second positioning plate 3, preventing the nut 8 from directly contacting the second positioning plate 3 and effectively protecting the outer surface of the second positioning plate 3.
[0037] First positioning kit and second positioning kit: The first positioning kit and the second positioning kit are respectively installed on the first positioning pressure plate 2 and the second positioning pressure plate 3. Their function is to further refine the clamping area and ensure the accurate positioning of the eccentric bearing raw material during the processing.
[0038] Nut 8: Nut 8 is installed on the mandrel body 1 and works in conjunction with the spherical washer 9. Tightening nut 8 applies clamping force to ensure that the eccentric bearing material does not move or rotate during processing. Specifically, when tightening nut 8, torque is applied using tools such as a wrench, causing nut 8 to move inward along the external thread of the mandrel body 1, thereby compressing the spherical washer 9 and the positioning pressure plate, thus clamping the eccentric bearing material.
[0039] The milling fixture of this application achieves stable clamping and precise positioning of the eccentric bearing material through the combination and interaction of components such as the spindle body 1, positioning pressure plate, spherical washer 9, positioning kit and nut 8, providing a reliable guarantee for subsequent milling processing.
[0040] Optionally, the first positioning plate 2 is provided with a first slot, and a first pin 10 is provided on one side of the mandrel body 1. When the first positioning plate 2 is installed on one side of the mandrel body 1, the first pin 10 cooperates with the first slot. The second positioning plate 3 is provided with a second slot, and a second pin 11 is provided on one side of the mandrel body 1. When the second positioning plate 3 is installed on the other side of the mandrel body 1, the second pin 11 cooperates with the second slot.
[0041] In this embodiment of the application, a first slot is provided on the first positioning plate 2. The first slot cooperates with the first pin 10 on the spindle body 1. The first slot has a certain length and width, so that the first positioning plate 2 is inserted into the first pin 10 through the first slot. The tight cooperation between the first pin 10 and the first slot ensures that the first positioning plate 2 will not slide or rotate relative to the spindle body 1 during the processing, thereby ensuring the stability of clamping and the processing accuracy.
[0042] Similarly, the second positioning plate 3 cooperates with the mandrel body 1 in a manner similar to that of the first positioning plate 2. The second positioning plate 3 is also provided with a second slot, which cooperates with the second pin 11 on the mandrel body 1. The tight cooperation between the second pin 11 and the second slot ensures the stability of the second positioning plate 3 during the processing, and together with the first positioning plate 2, forms a firm clamping of the eccentric bearing material.
[0043] When the first positioning plate 2 and the second positioning plate 3 are respectively installed on both sides of the spindle body 1, the first pin 10 and the first slot, and the second pin 11 and the second slot respectively form a mating relationship, thereby ensuring the stability of the positioning plate during the processing to meet the processing requirements.
[0044] Optionally, the first positioning plate 2 is provided with a plurality of first slots 4, which are equally spaced apart, and the first positioning plate 2 is divided into a plurality of first positioning plates by the first slots 4. The second positioning plate 3 is provided with a plurality of second slots 5, which are equally spaced apart, and the second positioning plate 3 is divided into a plurality of second positioning plates by the second slots 5.
[0045] In this embodiment, the first positioning plate 2 is provided with a plurality of first slots 4, which are arranged at equal intervals. By dividing the first positioning plate 2 with the first slots 4, the first positioning plate 2 can be divided into a plurality of first positioning plates, and the plurality of first positioning plates maintain the overall structural continuity. Similarly, the second positioning plate 3 is also provided with a plurality of second slots 5, which are also arranged at equal intervals. By dividing the second positioning plate 3 with the second slots 5, the second positioning plate 3 is divided into a plurality of second positioning plates. The correspondence between the second slots 5 and the first slots 4 ensures that the overall coordination and stability can be guaranteed when clamping the eccentric bearing material.
[0046] The mutual correspondence between the first slot 4 and the second slot 5 means that when the first positioning plate 2 and the second positioning plate 3 are respectively installed on both sides of the spindle body 1, the first slot 4 and the second slot 5 are aligned with each other, thereby ensuring that the milling fixture can clamp and position the eccentric bearing material.
[0047] Optionally, the first positioning kit includes a plurality of first clamping bolts 6, and a first threaded hole is provided at the middle position of the first positioning plate, and the first clamping bolts 6 are installed in the first threaded hole. The second positioning kit includes a plurality of second clamping bolts 7, and a second threaded hole is provided at the middle position of the second positioning plate, and the second clamping bolts 7 are installed in the second threaded hole.
[0048] In this embodiment of the application, the first positioning kit includes a plurality of first clamping bolts 6, and a first threaded hole is provided at the middle position of the first positioning plate. The first threaded hole matches the first clamping bolts 6. Similarly, the second positioning kit includes a plurality of second clamping bolts 7, and a second threaded hole is provided at the middle position of the second positioning plate. The second threaded hole matches the second clamping bolts 7.
[0049] After placing the eccentric bearing material into the milling fixture, rotating the nut 8 moves the second positioning plate 3 towards the first positioning plate 2. Under the action of the first positioning plate 2 and the second positioning plate 3, the eccentric bearing material is clamped and fixed. Then, multiple first clamping bolts 6 and second clamping bolts 7 are used to reposition the two sides of the eccentric bearing. Preferably, the milling fixture has seven first positioning plates and seven second positioning plates, corresponding to seven first clamping bolts 6 and seven second clamping bolts 7. After positioning the eccentric bearing with the first clamping bolts 6 and second clamping bolts 7, the eccentric bearing material can be processed by a machine tool to produce seven eccentric bearings. It should be noted that different numbers of positioning plates and clamping bolts can be set on the milling fixture; no specific limitation is made here, and the setting can be based on actual conditions.
[0050] Optionally, the bottom of the first slot and the second slot are lower than the inner arc surface of the eccentric bearing material.
[0051] In this embodiment of the application, when it is necessary to process the eccentric bearing material into a sheet-like eccentric bearing, it is necessary to ensure that the bottom of the first groove and the second groove are lower than the inner arc surface of the eccentric bearing material, so that the cutting tool can cut the eccentric bearing material during processing without damaging the first groove and the second groove.
[0052] The first slot has a larger slot size than the overall size of the first pin 10, and the second slot has a larger slot size than the overall size of the second pin 11.
[0053] In this embodiment of the application, the size of the first slot is larger than the overall size of the first pin 10, which means that when the first pin 10 is inserted into the first slot, the first pin 10 will not completely fill the first slot, but will leave a certain gap. Similarly, the size of the second slot is also larger than the overall size of the second pin 11, ensuring that the second pin 11 also has enough gap when it is inserted into the second slot.
[0054] Because the slot size is larger than the overall size of the pin, it is easier to insert the pin into the slot, and the insertion will not affect the pin and the slot. That is, it can be installed quickly without precise alignment, which effectively improves the assembly efficiency of the first positioning plate 2 and the second positioning plate 3 with the spindle body 1 and reduces the installation difficulty.
[0055] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A milling fixture for machining eccentric bearing bushes, characterized in that, include: The spindle body, the first positioning plate, the second positioning plate, the first positioning kit, the second positioning kit, the spherical washer, and the nut; The first positioning plate is installed on one side of the mandrel body, and the second positioning plate is installed on the other side of the mandrel body. The spherical washer is installed on one side of the second positioning plate, and one side of the spherical washer contacts the nut. The nut is installed on the mandrel body. The first positioning kit is installed on the first positioning plate, and the second positioning kit is installed on the second positioning plate. The first positioning plate and the second positioning plate, together with the first positioning kit and the second positioning kit, form a clamping area. The clamping area is used to clamp the eccentric bearing material.
2. The milling fixture for machining eccentric bearing bushes according to claim 1, characterized in that, The first positioning plate is provided with a first slot, and a first pin is provided on one side of the mandrel body. When the first positioning plate is installed on one side of the mandrel body, the first pin cooperates with the first slot.
3. The milling fixture for machining eccentric bearing bushes according to claim 1, characterized in that, The second positioning plate is provided with a second slot, and a second pin is provided on one side of the mandrel body. When the second positioning plate is installed on the other side of the mandrel body, the second pin cooperates with the second slot.
4. The milling fixture for machining eccentric bearing bushes according to claim 1, characterized in that, The first positioning plate is provided with a plurality of first slots, which are equally spaced apart, and the first positioning plate is divided into a plurality of first positioning plates by the first slots.
5. The milling fixture for machining eccentric bearing bushes according to claim 4, characterized in that, The second positioning plate is provided with a plurality of second slots, which are equally spaced apart, and the second positioning plate is divided into a plurality of second positioning plates by the second slots.
6. The milling fixture for machining eccentric bearing bushes according to claim 5, characterized in that, The first slot and the second slot correspond to each other.
7. The milling fixture for machining eccentric bearing bushes according to claim 4, characterized in that, The first positioning kit includes a plurality of first clamping bolts, and a first threaded hole is provided at the middle position of the first positioning plate, and the first clamping bolts are installed in the first threaded hole.
8. The milling fixture for machining eccentric bearing bushes according to claim 5, characterized in that, The second positioning kit includes several second clamping bolts, and a second threaded hole is provided in the middle position of the second positioning plate, and the second clamping bolts are installed in the second threaded hole.
9. The milling fixture for machining eccentric bearing bushes according to claim 5, characterized in that, The bottom of the first slot and the second slot are lower than the inner arc surface of the eccentric bearing material.