Grinding fixture

Abstract

The utility model discloses a grinding clamp which comprises a sleeve assembly, a connecting assembly and a positioning assembly, and the sleeve assembly is used for being arranged outside a to-be-machined part in a sleeving mode so that machining equipment can clamp the to-be-machined part by clamping the sleeve assembly; the connecting assembly is arranged on the sleeve assembly, and the sleeve assembly is installed on a part to be machined through the connecting assembly. The positioning assembly is arranged on the sleeve assembly, and a tip of machining equipment is inserted into the sleeve assembly through the positioning assembly. The sleeve assembly is arranged on the to-be-machined part in a sleeving mode and connected with the to-be-machined part through the connecting assembly, so that the to-be-machined part and the sleeve assembly form a whole, machining equipment indirectly clamps the to-be-machined part in the mode of clamping the sleeve assembly, and deformation and damage of the to-be-machined part caused by the fact that the machining equipment makes direct contact with the to-be-machined part are avoided; the finished product quality is ensured.

Description

Technical Field

[0001] This application relates to the field of machining, and particularly to a grinding fixture. Background Art

[0002] The wall thickness of the thin-walled cylindrical workpiece is relatively small, and there are several stepped structures on the outer wall, with an extremely irregular shape. At the same time, the thin-walled cylindrical workpiece has relatively high requirements for the surface finish of the outer circle. During the grinding process, if the outer circle of the workpiece is directly clamped, on the one hand, it is easy to cause the workpiece to deform, and on the other hand, the clamping marks will affect the surface roughness of the outer circle of the workpiece. Summary of the Utility Model

[0003] To solve at least one of the above technical problems, this application provides a grinding fixture, and the technical solutions adopted are as follows:

[0004] This application provides a grinding fixture, which includes a sleeve assembly, a connection assembly, and a positioning assembly. The sleeve assembly is used to be sleeved outside the part to be processed, so that the processing equipment clamps the part to be processed by clamping the sleeve assembly; the connection assembly is arranged on the sleeve assembly, and the sleeve assembly is installed on the part to be processed through the connection assembly; the positioning assembly is arranged on the sleeve assembly, and the center point of the processing equipment is inserted into the sleeve assembly through the positioning assembly.

[0005] In some embodiments of this application, the sleeve assembly includes a clamping sleeve and a center point sleeve. The clamping sleeve and the center point sleeve are sleeved at both ends of the part to be processed. Both the clamping sleeve and the center point sleeve are connected to the part to be processed through the connection assembly, and the positioning assembly is arranged on the center point sleeve.

[0006] In some embodiments of this application, the clamping sleeve includes a first abutting portion and a matching portion. The first abutting portion is used to abut the clamping end of the part to be processed, and the matching portion extends from the edge of the first abutting portion towards the part to be processed, so that the inner wall of the matching portion fits the outer circle of the part to be processed.

[0007] In some embodiments of this application, the center point sleeve includes a second abutting portion and an extending portion. The second abutting portion is used to abut the center point end of the part to be processed, and the extending portion extends from the edge of the second abutting portion towards the part to be processed.

[0008] In some embodiments of this application, the connection assembly includes a first jack and a first fastener. The first jack is arranged on the matching portion, and the first fastener is inserted into the first jack and abuts the outer circle of the part to be processed.

[0009] In some embodiments of this application, several first jacks are arranged, and each first jack is circumferentially distributed on the matching portion.

[0010] In some embodiments of the present application, the first fastener includes an Allen bolt. When the first fastener abuts against the outer circle of the component to be processed, the first fastener is inserted into the first jack.

[0011] In some embodiments of the present application, the connection assembly includes a second jack and a second fastener. The second jack is arranged on the second abutting portion. The second fastener is inserted into the second jack and connected to the tip end of the component to be processed.

[0012] In some embodiments of the present application, the positioning assembly includes a positioning jack. The positioning jack is located at the central position of the tip sleeve and is used for inserting the tip of the processing device.

[0013] In some embodiments of the present application, the inner wall of the positioning jack includes a contraction portion. The radial dimension of the contraction portion gradually increases from the inside to the end of the tip sleeve to match the shape of the tip of the processing device.

[0014] The embodiments of the present application at least have the following beneficial effects: In the present application, the sleeve assembly is sleeved on the component to be processed and connected to the component to be processed through the connection assembly, so that the component to be processed and the sleeve assembly form an integral body. The processing device indirectly clamps the component to be processed by clamping the sleeve assembly, avoiding deformation and damage of the component to be processed caused by the direct contact between the processing device and the component to be processed, and ensuring the quality of the finished product.

[0015] Some additional aspects and advantages of the present application will be given in the following description, some will become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0016] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0017] Figure 1 are the front view and side view of the component to be processed using the grinding fixture of the present application;

[0018] Figure 2 is the cross-sectional view of the grinding fixture of the present application installed on the component to be processed;

[0019] Figure 3 are the front view and cross-sectional view of the clamping sleeve in the grinding fixture of the present application;

[0020] Figure 4 are the front view and cross-sectional view of the tip sleeve in the grinding fixture of the present application.

[0021] Reference Signs:

[0022] Workpiece to be processed 100;

[0023] Clamping sleeve 101; First abutting portion 102; Fitting portion 103; Center sleeve 104; Second abutting portion 105; Extension portion 106;

[0024] First fastener 201; Second fastener 202;

[0025] Positioning jack 301. Detailed implementation mode

[0026] This section will describe the embodiments of the present application in detail in conjunction with Figures 1 to 4 The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0027] In the description of the present application, it should be understood that if terms such as "center", "middle part", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application 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, so it should not be construed as a limitation of the present application. The features defined with "first" and "second" are used to distinguish the feature names and do not have special meanings. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0028] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; 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. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0029] As Figure 1As shown, the component 100 to be machined applying the grinding fixture of the present application is formed as a thin-walled cylinder. When the machining equipment clamps the component 100 to be machined in a direct contact manner, the clamping force is likely to cause structural damages such as deformation of the thin-walled cylinder, thus affecting the finished product quality. At the same time, the component 100 to be machined is ground on the machining equipment, and it is required that the surface of the ground thin-walled cylinder has a high surface finish. When the machining equipment clamps the thin-walled cylinder in a direct contact manner, it is likely to cause clamping marks on the outer surface of the thin-walled cylinder, making it difficult for the thin-walled cylinder to meet the required surface finish requirements. Therefore, the machining equipment indirectly clamps the component 100 to be machined through the grinding fixture of the present application, avoiding the deformation of the component 100 to be machined and ensuring the surface finish.

[0030] As Figure 2 shown, the grinding fixture provided by the embodiment of the present application includes a sleeve assembly, a connection assembly, and a positioning assembly. The sleeve assembly is sleeved outside the component 100 to be machined and forms an integral body with the component 100 to be machined through the connection assembly. The machining equipment indirectly clamps the component 100 to be machined by clamping the sleeve assembly, thereby performing grinding on the component 100 to be machined. Since the clamping structure of the machining equipment only clamps the sleeve assembly and does not contact the component 100 to be machined, clamping marks on the surface of the component 100 to be machined are avoided, and the deformation of the component 100 to be machined is also prevented.

[0031] At the same time, in order to further position the integral body formed by the component 100 to be machined and the sleeve assembly on the machining equipment, the center point of the machining equipment also needs to be connected to the sleeve assembly. Therefore, the positioning assembly is arranged on the sleeve assembly, and the center point of the machining equipment is inserted into the sleeve assembly through the positioning assembly.

[0032] In some examples, the sleeve assembly includes a clamping sleeve 101 and a center point sleeve 104, and the component 100 to be machined includes a clamping end and a center point end. It can be understood that the clamping sleeve 101 is sleeved on the clamping end, and the center point sleeve 104 is sleeved on the center point end. The machining equipment clamps the clamping sleeve 101 and uses the center point to connect the center point sleeve 104, so that the integral body formed by the sleeve assembly and the component 100 to be machined is positioned on the machining equipment. Since the positioning assembly is used to connect the center point, the positioning assembly is arranged on the center point sleeve 104. Among them, both the clamping sleeve 101 and the center point sleeve 104 are connected to the component 100 to be machined through the connection assembly.

[0033] As Figure 3 shown, in some examples, the clamping sleeve 101 includes a first abutting portion 102 and a fitting portion 103. The first abutting portion 102 is formed as a plate-like structure. The fitting portion 103 extends from the edge of the first abutting portion 102 towards the component 100 to be machined, and the fitting portion 103 forms a certain angle with the first abutting portion 102, so that the clamping sleeve 101 is formed as a cylindrical structure with one end open.

[0034] Further, the clamping end of the workpiece 100 to be processed is inserted into the clamping sleeve 101 and contacts the first abutting portion 102. At the same time, the angle between the engaging portion 103 and the first abutting portion 102 is set according to the shape of the clamping end of the workpiece 100 to be processed, so that the inner wall of the engaging portion 103 fits the outer circle of the workpiece 100 to ensure that the clamping sleeve 101 fits the clamping end of the workpiece 100.

[0035] In some examples, the connecting assembly includes a first jack and a first fastener 201. The first jack is formed as a through hole. When the first fastener 201 is installed in the first jack, the first fastener 201 can pass through the first jack and abut against the workpiece 100 to be processed, thereby ensuring the connection between the clamping sleeve 101 and the workpiece 100.

[0036] Among them, the first jack is provided as a threaded hole, and the first fastener 201 is provided as a bolt threadedly connected to the first jack. As the bolt is screwed in, the end of the bolt gradually approaches and abuts against the outer circle of the workpiece 100 to be processed.

[0037] In some examples, the first jacks are provided on the engaging portion 103, and a plurality of first jacks are evenly distributed in a circumferential manner to ensure uniform force on each position of the clamping end of the workpiece 100, and to a certain extent, it can also prevent deformation of the clamping end of the workpiece 100. Specifically, four first jacks are provided, and correspondingly, four first fasteners 201 are also provided.

[0038] In some examples, if the first fastener 201 is an ordinary bolt, when the end of the first fastener 201 is screwed in to abut against the outer circle of the workpiece 100 to be processed, the large end of the first fastener 201 will remain outside the first jack, and the processing equipment will contact the large end of the first fastener 201 during the clamping process, rather than contacting the side wall of the clamping sleeve 101, resulting in a smaller force-bearing area and being not conducive to stable clamping.

[0039] Therefore, the first fastener 201 includes an internal hexagonal bolt. When the end of the internal hexagonal bolt is screwed in to abut against the outer circle of the workpiece 100 to be processed, the internal hexagonal bolt is completely embedded in the first jack, and there is no partial structure remaining outside the first jack. Then, the processing equipment can act on the side wall of the clamping sleeve 101 with a larger force-bearing area to ensure the stability of clamping.

[0040] As Figure 4 shown, in some examples, the center sleeve 104 includes a second abutting portion 105 and an extending portion 106. The second abutting portion 105 is formed as a plate-like structure. The extending portion 106 extends from the edge of the second abutting portion 105 towards the workpiece 100 to be processed, and the extending portion 106 forms a certain angle with the second abutting portion 105. Then, the center sleeve 104 is formed as a tubular structure with one end open.

[0041] Among them, since the clamping sleeve 101 and the center sleeve 104 are respectively located at opposite ends of the workpiece 100 to be machined, and both the mating portion 103 and the extension portion 106 extend toward the workpiece 100 to be machined, the distance between the mating portion 103 and the extension portion 106 is the distance between the clamping sleeve 101 and the center sleeve 104. To ensure that the machining equipment has sufficient machining space and prevent the mating portion 103 and the extension portion 106 from blocking the portion of the outer circle of the workpiece 100 to be machined, there is a certain interval between the mating portion 103 and the extension portion 106.

[0042] In some examples, the connecting assembly includes a second jack and a second fastener 202. The second jack is formed as a through hole. When the second fastener 202 is installed in the second jack, the second fastener 202 can pass through the second jack to connect the workpiece 100 to be machined, thereby ensuring the connection between the center sleeve 104 and the workpiece 100 to be machined.

[0043] Among them, the first jack is set as a threaded hole, and the center end of the workpiece 100 to be machined is also provided with a threaded hole, and the thread parameters of the first jack and the threaded hole at the center end of the workpiece 100 to be machined are the same. The second fastener 202 includes a bolt. As the bolt is continuously screwed in, the bolt is threadedly connected to the first jack and the threaded hole at the center end of the workpiece 100 to be machined in sequence, thereby connecting the workpiece 100 to be machined and the center sleeve 104.

[0044] In addition, the second jack is arranged on the second abutting portion 105. When the center sleeve 104 is installed at the center end of the workpiece 100 to be machined, it is first necessary to ensure that the second jack corresponds to the threaded hole at the center end of the workpiece 100 to be machined to avoid difficulty in screwing in the second fastener 202. Specifically, two second jacks are provided, and correspondingly, two threaded holes are also provided at the center end of the workpiece 100 to be machined.

[0045] In some examples, the positioning assembly includes a positioning jack 301. The center of the machining equipment is inserted into the positioning jack 301. It can be understood that the center of the machining equipment needs to be located at the axis position of the workpiece 100 to be machined, that is, at the axis position of the sleeve assembly, so the positioning jack 301 is located at the center position of the center sleeve 104.

[0046] Among them, the inner wall of the positioning jack 301 includes a constriction portion. The radial dimension of the constriction portion gradually increases from the inside of the center sleeve 104 to the end of the center sleeve 104, and the shape of the constriction portion corresponds to the shape of the center of the machining equipment to ensure that the end of the center can fit against the constriction portion.

[0047] In some examples, the sizes of the clamping sleeve and the center sleeve 104 are set according to the size of the component 100 to be machined. Specifically, the outer diameter of the clamping sleeve 101 is approximately 200 millimeters; the inner diameter of the clamping sleeve 101 is 163 millimeters, with an upper deviation of +0.7 millimeters and a lower deviation of +0.6 millimeters; the extension length of the mating portion 103 is approximately 20 millimeters; the thickness of the first abutting portion 102 is approximately 30 millimeters. The outer diameter of the center sleeve 104 is approximately 200 millimeters; the inner diameter of the center sleeve 104 is 166 millimeters, with an upper deviation of -0.17 millimeters and a lower deviation of -0.2 millimeters; the extension length of the extension portion 106 is approximately 50 millimeters; the thickness of the second abutting portion 105 is approximately 20 millimeters.

[0048] In the actual implementation process, first, the clamping sleeve 101 is installed on the clamping end of the component 100 to be machined by using the first fastener 201, and then the center sleeve 104 is installed on the center end of the component 100 to be machined by using the second fastener 202; the machining equipment clamps the clamping sleeve 101, and the center of the machining equipment is inserted into the positioning socket 301, thereby completing the loading of the component 100 to be machined and avoiding deformation and surface damage of the component 100 caused by clamping.

[0049] In the description of this specification, if there are descriptions of reference terms such as "one embodiment", "some examples", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", it means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0050] The above has described in detail the embodiments of the present application in conjunction with the accompanying drawings. However, the present application is not limited to the above embodiments, and various changes can be made without departing from the purpose of the present application within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A grinding fixture, characterized in that, Comprising: A sleeve assembly for sleeving outside a component to be machined, so that a machining device holds the component to be machined by clamping the sleeve assembly; A connection assembly provided on the sleeve assembly, and the sleeve assembly is mounted on the component to be machined through the connection assembly; A positioning assembly provided on the sleeve assembly, and a center point of the machining device is inserted into the sleeve assembly through the positioning assembly.

2. The grinding fixture according to claim 1, characterized in that, The sleeve assembly includes a clamping sleeve and a center point sleeve. The clamping sleeve and the center point sleeve are sleeved at two ends of the component to be machined. Both the clamping sleeve and the center point sleeve are connected to the component to be machined through the connection assembly, and the positioning assembly is provided on the center point sleeve.

3. The grinding fixture according to claim 2, wherein, The clamping sleeve includes a first abutting portion and a fitting portion. The first abutting portion is used for abutting against the clamping end of the component to be machined, and the fitting portion extends from the edge of the first abutting portion towards the component to be machined, so that the inner wall of the fitting portion fits against the outer circle of the component to be machined.

4. The grinding fixture according to claim 2, characterized in that, The center point sleeve includes a second abutting portion and an extending portion. The second abutting portion is used for abutting against the center point end of the component to be machined, and the extending portion extends from the edge of the second abutting portion towards the component to be machined.

5. The grinding fixture according to claim 3, characterized in that, The connection assembly includes a first jack and a first fastener. The first jack is provided on the fitting portion, and the first fastener is inserted into the first jack and abuts against the outer circle of the component to be machined.

6. The grinding fixture according to claim 5, wherein A plurality of the first jacks are provided, and the first jacks are circumferentially distributed on the fitting portion.

7. The grinding fixture according to claim 5, wherein The first fastener includes an internal hexagon bolt. When the first fastener abuts against the outer circle of the component to be machined, the first fastener is embedded in the first jack.

8. The grinding fixture according to claim 4, wherein The connection assembly includes a second jack and a second fastener. The second jack is provided on the second abutting portion, and the second fastener is inserted into the second jack and connected to the center point end of the component to be machined.

9. The grinding fixture according to claim 2, wherein, The positioning assembly includes a positioning jack which is located at the center of the center point sleeve and is used for inserting the center point of the machining device.

10. The grinding fixture according to claim 9, characterized in that, The inner wall of the positioning jack includes a constricting portion. The radial dimension of the constricting portion gradually increases from the inside of the center point sleeve to the end of the center point sleeve to match the shape of the center point of the machining device.

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