Positioning tool suitable for machining bell housing

Abstract

The positioning tool comprises a base and a connecting piece, a supporting plate and a supporting frame are fixedly installed on the left side and the right side of the upper surface of the base respectively, the connecting piece is arranged on the outer side of the supporting plate, a circular groove is formed in the outer side face of the connecting piece, a clamping disc is arranged in the groove in a sliding mode, and a clamping groove is formed in the clamping disc. A plurality of arc-shaped magnetic clamping strips are annularly and fixedly arranged on the arc-shaped face of the clamping disc, a third through bolt hole is formed in the side face of the supporting frame, a first screw is arranged in the third bolt hole in a threaded mode, and a top block is installed at the left end of the first screw. According to the clamping positioning component, the clamping disc and the connecting piece can be separated only by taking out the second bolt in the second counterbore, and the clamping positioning component can be replaced more conveniently and rapidly.

Description

Technical Field

[0001] The utility model belongs to the technical field of positioning tooling, and in particular relates to a positioning tooling suitable for processing a bell-shaped housing. Background Art

[0002] In a universal joint, the bell housing is a key component. It is hollow with an open end and features an arc-shaped ball track on its inner wall for accommodating steel balls. The ball track serves as the bell housing's primary working surface. Generally speaking, machining involves multiple processes, such as turning, milling, grinding, and possibly heat treatment. As a mechanical component, the bell housing undergoes multiple steps and processing during production, with milling machines and lathes being the most commonly used equipment. Positioning the bell housing is required before each machining operation. However, after turning, additional processing steps may be required to achieve the final dimensions and surface quality. These subsequent processing steps may include manual grinding and polishing to ensure the surface finish and precision of the part meet design requirements. Manual processing is often essential, especially for parts with complex shapes or high precision requirements.

[0003] In the prior art, such as Chinese patent publication number: CN212653092U, the disclosed positioning jig for machining a bell-shaped shell has a cylindrical frame, the tail end of the cylindrical frame is fixedly connected to a flange seat, and the flange seat is provided with a plurality of mounting holes; six semicircular arc grooves are evenly distributed along the circumference on the outer circumferential surface of the head end of the cylindrical frame, and a threaded hole is provided at the bottom of each arc groove, and each threaded hole is connected to the center hole of the cylindrical frame, and a cylinder is installed in each arc groove, and the head end of each cylinder is spherical, and a bolt hole is radially provided on each cylinder, and a bolt is installed in each bolt hole, and the screw of each bolt is provided with a positioning section and a first threaded section, wherein the outer circumferential surface of the screw of the positioning section of each bolt is slidably and rotatably connected to the inner circumferential surface axial hole of the corresponding bolt hole, and the first threaded section of each bolt is threadedly connected to the threaded hole on the corresponding arc groove. Through the above structure, the bell-shaped shell precision forging can be positioned with high positioning accuracy.

[0004] The above positioning jig needs to be clamped and fixed by the lathe to complete the final positioning of the bell shell, which is not suitable for manual processing. In addition, when processing bell shells of different sizes, the above jig needs to replace multiple cylinders, and the replacement process is relatively troublesome. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a positioning tool suitable for processing a bell-shaped shell. The positioning tool is suitable for both lathe processing and manual processing, effectively improving the scope of use of the positioning tool.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a positioning tool suitable for processing a bell-shaped shell, comprising a base and a connecting piece, wherein a support plate and a support frame are fixedly mounted on the left and right sides of the upper surface of the base, respectively, and the connecting piece is arranged on the outside of the support plate.

[0007] A circular groove is provided on the outer side of the connecting piece, a clamping disc is slidably arranged in the groove, and a plurality of arc-shaped magnetic clamping strips are fixedly arranged in an annular shape on the arc-shaped surface of the clamping disc.

[0008] A through bolt hole three is provided on the side of the support frame, a screw rod one is provided on the internal thread of the bolt hole three, and a top block is installed on the left end of the screw rod one.

[0009] Optionally, the outer side surface of the clamping disk corresponds to the shape of the inner cavity of the bell-shaped shell, and the number of the magnetic clamping strips corresponds to the number of ball channels in the inner cavity of the bell-shaped shell, and their shapes and sizes correspond to the ball channels of the bell-shaped shell.

[0010] Optionally, a plurality of card slots are provided in an annular shape on the outer side surface of the connecting piece, and the card slots are communicated with the grooves. A plurality of card blocks are fixedly provided on the annular surface of the card plate, and the card blocks can be slidably engaged with the card slots.

[0011] Optionally, a second countersunk hole is provided on the right side of the clamping plate, and the second countersunk hole passes through the clamping plate, and a bolt hole is provided at the center position of the groove of the connecting piece, and a second bolt is provided in the second countersunk hole, and the second bolt is threadedly engaged with the first bolt hole.

[0012] Optionally, an annular groove is provided on the right side of the support frame, which is located outside the bolt hole three and has a diameter larger than the bolt hole three, and a spiral groove one is provided on the inner wall of the annular groove.

[0013] Optionally, a fixed cylinder is provided on the surface of the screw rod one, a spiral groove two is provided on the inner wall of the fixed cylinder, a spiral groove three is provided on the outer surface of the fixed cylinder, the spiral groove one and the spiral groove three are threadedly matched, and the spiral groove two and the spiral groove on the surface of the screw rod one are threadedly matched.

[0014] Optionally, a connecting shaft is fixedly provided on the left side of the connecting member, and the connecting shaft passes through the support plate and is slidably fitted therewith. A countersunk hole 1 is provided on the upper surface of the support plate, and a bolt hole 2 corresponding to the position of the countersunk hole 1 is provided on the surface of the connecting shaft.

[0015] In summary, compared with the prior art, the positioning tooling provided by the present invention, which is suitable for processing a bell-shaped housing, has the following beneficial effects:

[0016] 1. In the present invention, after the connector with the clamping disc is mounted on the side of the support plate, the screw rod 1 can be rotated to make the top block contact the bell housing, and then the bell housing can be clamped and fixed with the clamping disc. At this time, manual processing can be performed, or the bolt 1 in the countersunk hole 1 can be removed, the connecting shaft and the support plate can be separated, and then the connector can be taken to an external lathe and fixed with a three-jaw chuck. At this time, the bell housing is located on the outer side of the clamping disc through the magnetic clamping strip, and then the top rod on the lathe is used to abut the center hole of the bell housing, thereby fixing the bell housing. At this time, the bell housing can be machined on the lathe;

[0017] 2. In the present invention, the clamping plate and the connecting piece can be separated by simply removing the second bolt from the second countersunk hole, making it easier and faster to replace the clamping positioning member.

[0018] 3. In the present invention, one end of the bell-shaped housing can be covered on the outer side of the clamping disk, and the bell-shaped housing can be adsorbed by the arc-shaped magnetic clamping strip so that it can be stably located outside the clamping disk, which facilitates the subsequent positioning process of the bell-shaped housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 Explosion diagram of the utility model Figure 1 ;

[0021] Figure 3 For this utility model Figure 2 sectional view of

[0022] Figure 4 Explosion diagram of the utility model Figure 2 ;

[0023] Figure 5 For this utility model Figure 4 sectional view of

[0024] Figure 6 For this utility model Figure 1 sectional view of

[0025] In the figure: 1. Base; 2. Support plate; 21. Countersunk hole 1; 22. Bolt 1; 3. Connector; 31. Groove; 311. Card slot; 312. Bolt hole 1; 32. Connecting shaft; 321. Bolt hole 2; 4. Card plate; 41. Magnetic card strip; 42. Card block; 43. Countersunk hole 2; 44. Bolt 2; 5. Bell housing; 6. Support frame; 61. Bolt hole 3; 62. Annular groove; 621. Spiral groove 1; 7. Screw rod 1; 71. Turntable; 711. Bolt groove; 72. Fixing cylinder; 721. Spiral groove 2; 722. Spiral groove 3; 8. Top block; 81. Screw rod 2. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] refer to Figure 1-2 A positioning tool suitable for processing a bell-shaped shell includes a base 1, and a support plate 2 and a support frame 6 are fixedly installed on the left and right sides of the upper surface of the base 1. The outer sides of the support plate 2 and the support frame 6 are installed with a tooling fixture used in conjunction to clamp and fix the bell-shaped shell 5.

[0028] refer to Figure 1-3 A connecting piece 3 is provided on the outer side of the support plate 2. The connecting piece 3 is disc-shaped. A circular groove 31 is provided on the outer side of the connecting piece 3. A plurality of card grooves 311 are provided on the outer side of the connecting piece 3 in an annular shape. The card grooves 311 are communicated with the groove 31.

[0029] refer to Figure 2-3 A snap-on disc 4 is slidably arranged in the groove 31, and the outer side surface of the snap-on disc 4 corresponds to the shape of the inner cavity of the bell-shaped shell 5, and a plurality of arc-shaped magnetic clips 41 are fixedly arranged in a ring shape on the arc surface of the snap-on disc 4. The number of the magnetic clips 41 corresponds to the number of ball lanes in the inner cavity of the bell-shaped shell 5, and their shapes and sizes correspond to the ball lanes of the bell-shaped shell 5.

[0030] Specifically, one end of the bell-shaped housing 5 can be covered on the outer side of the clamping disk 4 , and the bell-shaped housing 5 can be adsorbed by the arc-shaped magnetic clamping strip 41 so that it can be stably located outside the clamping disk 4 .

[0031] refer to Figure 2-3 The annular surface of the snap-in disk 4 is fixedly provided with a plurality of snap-in blocks 42, which can be slidably engaged with the slot 311. After the snap-in disk 4 is placed into the groove 31, the snap-in blocks 42 enter the slot 311 to prevent the snap-in disk 4 from rotating and affecting the processing of the bell-shaped housing 5.

[0032] refer to Figure 2-3A second countersunk hole 43 is provided on the right side of the clamping plate 4, and the second countersunk hole 43 passes through the clamping plate 4, and a bolt hole 312 is provided at the center position of the groove 31 of the connecting member 3. A second bolt 44 is provided in the second countersunk hole 43, and the second bolt 44 is threadedly matched with the bolt hole 312 to fix the connecting member 3 and the clamping plate 4 together. In addition, the bolt connection method facilitates the replacement of the clamping plate 4, so that it can be used with bell-shaped housings 5 ​​of different sizes.

[0033] refer to Figure 4-5 A through bolt hole three 61 is provided on the side of the support frame 6, and a screw rod 7 is provided in the internal thread of the bolt hole three 61. A top block 8 is installed on the left end of the screw rod 7. The top block 8 is used to abut the center hole of the bell housing 5. By rotating the screw rod 7, the top block 8 contacts the bell housing 5, and then cooperates with the clamping plate 4 to clamp and fix the bell housing 5.

[0034] refer to Figure 4 A turntable 71 is fixedly installed on the right end of the screw 1 7 to facilitate the staff to rotate the screw 1 7.

[0035] refer to Figure 5 The left end face of the screw rod 7 is provided with a bolt groove 711, and the right end face of the top block 8 is fixedly provided with a screw rod 2 81. The screw rod 2 81 cooperates with the bolt groove 711 to facilitate the replacement of the top block 8 to adapt to bell-shaped housings 5 ​​of different sizes.

[0036] refer to Figure 4-5 The right side of the support frame 6 is provided with an annular groove 62, which is located outside the bolt hole 3 61 and has a diameter larger than the bolt hole 3 61, and a spiral groove 1 621 is provided on the inner wall of the annular groove 62.

[0037] A fixing cylinder 72 is provided on the surface of the screw 1 7 , the inner wall of the fixing cylinder 72 is provided with a spiral groove 2 721 , the outer surface of the fixing cylinder 72 is provided with a spiral groove 3 722 , the spiral groove 1 621 and the spiral groove 3 722 are threadedly matched, and the spiral groove 2 721 and the spiral groove on the surface of the screw 1 7 are threadedly matched.

[0038] Specifically, after the top block 8 completes the fixing and clamping of the bell housing 5 by rotating the screw 7, the fixing cylinder 72 is rotated to fix the position of the screw 7, thereby preventing the screw 7 from rotating during the processing of the bell housing 5 and affecting the processing of the bell housing 5.

[0039] refer to Figure 6A connecting shaft 32 is fixedly provided on the left side of the connecting member 3. The connecting shaft 32 passes through the support plate 2 and is slidably fitted. A countersunk hole 21 is provided on the upper surface of the support plate 2, and a bolt hole 21 corresponding to the position of the countersunk hole 21 is provided on the surface of the connecting shaft 32. A bolt 22 is placed in the countersunk hole 21, and the bolt 22 is threadedly fitted with the bolt hole 2 321 to fix the connecting shaft 32 to the support plate 2.

[0040] Specifically, the positioning fixture of the bell-shaped housing 5 can perform secondary processing on the bell-shaped housing 5 manually after completing the positioning and clamping of the bell-shaped housing 5;

[0041] It is also possible to remove the bolt 22 in the countersunk hole 21, separate the connecting shaft 32 from the support plate 2, and then take the connecting part 3 to an external lathe and fix the connection with a three-jaw chuck. At this time, the clock shell 5 is on the outer side of the clamping disk 4 through the magnetic clamping strip 41, and then cooperate with the top rod on the lathe to abut the center hole position of the bell shell 5, and then form a fixation for the bell shell 5. At this time, the bell shell 5 can be machined by the lathe.

[0042] The three-jaw chuck and ejector pin of the above-mentioned lathe are both prior art.

[0043] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0044] It should be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0045] The above description shows and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present application can be used in various other combinations, modifications, and environments and can be modified within the scope of the application concept described herein through the above teachings or technology or knowledge in the relevant field. Modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present application should be protected by the claims appended hereto.

Claims

1. A positioning tool suitable for processing a bell-shaped housing, characterized in that: It comprises a base (1) and a connecting member (3), wherein a support plate (2) and a support frame (6) are fixedly mounted on the left and right sides of the upper surface of the base (1), respectively, and the connecting member (3) is arranged on the outside of the support plate (2). The outer side surface of the connecting member (3) is provided with a circular groove (31), a clamping disc (4) is slidably arranged in the groove (31), and a plurality of arc-shaped magnetic clamping strips (41) are fixedly arranged in an annular shape on the arc-shaped surface of the clamping disc (4). The side surface of the support frame (6) is provided with a through bolt hole three (61), the inner thread of the bolt hole three (61) is provided with a screw rod one (7), and the left end of the screw rod one (7) is installed with a top block (8).

2. A positioning tool suitable for processing a bell-shaped housing according to claim 1, characterized in that: The outer side surface of the clamping disc (4) corresponds to the shape of the inner cavity of the bell-shaped housing (5), and the number of the magnetic clamping strips (41) corresponds to the number of ball lanes in the inner cavity of the bell-shaped housing (5), and their shapes and sizes correspond to the ball lanes of the bell-shaped housing (5).

3. A positioning tool suitable for processing a bell-shaped housing according to claim 1, characterized in that: The outer side surface of the connecting member (3) is provided with a plurality of snap-in grooves (311) in an annular shape, and the snap-in grooves (311) are communicated with the groove (31). The annular surface of the snap-in plate (4) is fixedly provided with a plurality of snap-in blocks (42), and the snap-in blocks (42) can be slidably snap-fitted with the snap-in grooves (311).

4. A positioning tool suitable for processing a bell-shaped housing according to claim 1, characterized in that: A second countersunk hole (43) is provided on the right side of the clamping plate (4), and the second countersunk hole (43) passes through the clamping plate (4). A first bolt hole (312) is provided at the center of the groove (31) of the connecting member (3). A second bolt (44) is provided in the second countersunk hole (43), and the second bolt (44) is threadedly engaged with the first bolt hole (312).

5. A positioning tool suitable for processing a bell-shaped housing according to claim 1, characterized in that: The right side of the support frame (6) is provided with an annular groove (62), which is located outside the third bolt hole (61) and has a diameter larger than the third bolt hole (61). A spiral groove (621) is provided on the inner wall of the annular groove (62).

6. A positioning tool suitable for processing a bell-shaped housing according to claim 5, characterized in that: The surface of the screw rod 1 (7) is provided with a fixed cylinder (72), the inner wall of the fixed cylinder (72) is provided with a spiral groove 2 (721), the outer surface of the fixed cylinder (72) is provided with a spiral groove 3 (722), the spiral groove 1 (621) and the spiral groove 3 (722) are threadedly matched, and the spiral groove 2 (721) and the spiral groove on the surface of the screw rod 1 (7) are threadedly matched.

7. A positioning tool suitable for processing a bell-shaped housing according to claim 1, characterized in that: A connecting shaft (32) is fixedly provided on the left side of the connecting member (3), and the connecting shaft (32) passes through the support plate (2) and is slidably fitted therewith. A countersunk hole (21) is provided on the upper surface of the support plate (2), and a bolt hole (321) corresponding to the position of the countersunk hole (21) is provided on the surface of the connecting shaft (32).

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