Machining jig for rotating shaft

Abstract

The machining jig for the rotating shaft comprises a chuck assembly and an expansion assembly, the chuck assembly comprises a chuck body, an adjusting disc and three clamping jaws, the three clamping jaws are distributed in the circumferential direction of the chuck body in an array mode, the adjusting disc is located in the chuck body, a spiral track is arranged on the surface of the adjusting disc, and the spiral track is located in the chuck body. Connecting teeth meshed with the spiral track are arranged on the three clamping jaws, and a connecting part connected with the adjusting disc is arranged on the chuck body. The expansion assembly comprises adjusting claws, connecting rods and adjusting rods, the number of the adjusting claws is matched with the number of the clamping claws, first steps and second steps are arranged on the clamping claws, sliding rails are arranged on the first steps, the adjusting claws are in sliding connection with the sliding rails, and the connecting rods penetrate through the adjusting claws and are inserted into the second steps; the adjusting rod penetrates through the connecting rod and is in threaded connection with the second step, and the end face of the adjusting claw is higher than the end face of the second step.

Description

Technical Field

[0001] This utility model relates to the field of rotating shaft fixture technology, and more specifically to a machining fixture for rotating shafts. Background Technology

[0002] Rotary shafts are indispensable key components in various mechanical equipment, widely used in numerous industries such as automobiles, aerospace, and industrial machinery. Their machining accuracy and quality directly affect the performance and service life of the entire mechanical equipment. In the traditional machining process of rotary shafts, multiple machining equipment and processes are usually required to complete the machining operations of different parts. For large-diameter rotary shafts, when using ordinary lathes for machining, the clamping range of the lathe chuck will be limited, which may result in the chuck being unable to clamp the rotary shaft. Therefore, it is necessary to design machining fixtures of specific dimensions according to rotary shafts of different diameters, which will result in high design and R&D costs, which is not conducive to the long-term development of enterprises. Utility Model Content

[0003] To address the problem that existing chucks cannot clamp large-diameter rotating shafts, this invention provides a machining fixture for rotating shafts.

[0004] To solve the above-mentioned technical problems, this utility model provides a machining fixture for rotating shafts, including a chuck assembly and an extension assembly. The chuck assembly includes a chuck body, an adjusting plate, and three jaws. The three jaws are arranged in an array along the circumferential direction of the chuck body. The adjusting plate is located inside the chuck body, and a helical track is provided on the surface of the adjusting plate. Each of the three jaws is provided with connecting teeth that mesh with the helical track. The chuck body is provided with a connecting part that connects to the adjusting plate.

[0005] The expansion component includes an adjusting claw, a connecting rod, and an adjusting rod. The number of adjusting claws is adapted to the number of clamping claws. Each clamping claw is provided with a first step and a second step. A slide rail is provided on the first step. The adjusting claw is slidably connected to the slide rail. The connecting rod passes through the adjusting claw and is inserted into the second step. The adjusting rod passes through the connecting rod and is threadedly connected to the second step. The end face of the adjusting claw is higher than the end face height of the second step.

[0006] In an embodiment of this utility model, the connecting rod includes a first connecting part and a second connecting part, the first connecting part being inserted into and connected to the second step, and the second connecting part being attached to the side of the adjusting claw.

[0007] In an embodiment of this utility model, the adjusting rod includes a first adjusting part and a second adjusting part, the first adjusting part being threadedly connected to the second step, and the second adjusting part being fitted to the end face of the second connecting part.

[0008] In embodiments of this utility model, the cross-sectional shape of the first connecting portion includes either a circle or a square.

[0009] In an embodiment of this utility model, the extension component further includes a locking nut, which is located between the second adjusting part and the second connecting part and is threadedly connected to the first adjusting part.

[0010] In an embodiment of this utility model, the processing fixture further includes a sealing block. A through hole is provided at the center of the chuck body. The sealing block is threadedly connected to the through hole, and the end face of the sealing block is flush with the end face of the second step.

[0011] In an embodiment of this utility model, threaded holes are provided around the sealing block, and the first adjusting part passes through the second step and is threadedly connected to the threaded holes.

[0012] In an embodiment of this utility model, the expansion component further includes an arc-shaped plate, which is fixed on the adjusting claw and concentrically arranged with the chuck body.

[0013] In an embodiment of this utility model, the inner surface of the arc-shaped plate is provided with an anti-slip layer and / or anti-slip texture.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] The adjusting jaw is connected to the first step by insertion, so that the adjusting jaw is installed on the chuck. The connecting rod is connected to the second step by insertion, and the adjusting rod is threaded to the second step. Thus, the adjusting jaw can be fixed on the chuck by the combined action of the connecting rod and the adjusting rod. Since the end face height of the adjusting jaw is higher than the end face height of the second step, and the adjusting jaw is installed on the first step, the clamping range of the chuck can be increased by the action of the adjusting jaw. By moving the position of the chuck, the adjusting jaw moves synchronously, so that the adjusting jaw can clamp the large-diameter rotating shaft, so that the lathe can perform turning machining on the rotating shaft and improve the clamping range of the chuck. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a three-dimensional structural diagram of the machining fixture clamping the rotating shaft provided in this embodiment of the utility model;

[0018] Figure 2This is a three-dimensional structural schematic diagram of the processing fixture provided in this embodiment of the utility model;

[0019] Figure 3 yes Figure 2 Enlarged view of point A in the image;

[0020] Figure 4 This is a partial exploded view of the processing fixture provided in this embodiment of the utility model;

[0021] Figure 5 This is a partial exploded structural diagram of the expansion component in the processing fixture provided in this embodiment of the utility model.

[0022] Explanation of reference numerals in the attached figures

[0023] 1. Machining fixture; 2. Rotating shaft; 11. Chuck assembly; 12. Extension assembly; 13. Sealing block; 111. Chuck body; 113. Chuck jaws; 121. Adjusting jaws; 122. Connecting rod; 123. Adjusting rod; 124. Locking nut; 125. Arc plate; 1111. Adjusting head; 1131. Connecting teeth; 1132. First step; 1133. Second step; 1134. Slide rail; 1221. First connecting part; 1222. Second connecting part; 1231. First adjusting part; 1232. Second adjusting part. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0025] Please see Figures 1-5 To solve the problems in the prior art, this utility model provides a machining fixture 1 for rotating shaft 2, including a chuck assembly 11 and an extension assembly 12. The chuck assembly 11 includes a chuck body 111, an adjustment plate and three jaws 113. The three jaws 113 are arranged in an array along the circumferential direction of the chuck body 111. The adjustment plate is located inside the chuck body 111 and a spiral track is provided on the surface of the adjustment plate. Each of the three jaws 113 is provided with a connecting tooth 1131 that meshes with the spiral track. The chuck body 111 is provided with a connecting part that connects to the adjustment plate.

[0026] The expansion component 12 includes an adjusting claw 121, a connecting rod 122, and an adjusting rod 123. The number of adjusting claws 121 is adapted to the number of claws 113. A first step 1132 and a second step 1133 are provided on the claws 113. A slide rail 1134 is provided on the first step 1132. The adjusting claw 121 is slidably connected to the slide rail 1134. The connecting rod 122 passes through the adjusting claw and is inserted into the second step 1133. The adjusting rod 123 passes through the connecting rod 122 and is threadedly connected to the second step 1133. The end face of the adjusting claw 121 is higher than the end face of the second step 1133.

[0027] By engaging the connecting teeth 1131 on the chuck 113 with the spiral track on the adjusting plate, the adjusting plate can be rotated when the connecting part is rotated, thereby causing the adjusting plate to open or close the chuck 113, so as to achieve the clamping action of rotating shafts 2 of different diameters, and then the lathe can perform turning machining on the clamped rotating shafts 2.

[0028] The adjusting claw 121 is inserted into the first step 1132 to mount it onto the retaining claw 113. The connecting rod 122 is inserted into the second step 1133, and the adjusting rod 123 is threaded onto the second step 1133. Thus, the adjusting claw 121 is fixed onto the retaining claw 113 by the combined action of the connecting rod 122 and the adjusting rod 123. Since the end face height of the adjusting claw 121 is higher than the end face height of the second step 1133, and the adjusting claw 121 is mounted on the first step 1132, the adjusting claw 121 can be fixed onto the retaining claw 113 by its action. Increasing the clamping range of the chuck 113 allows for better clamping of a large-diameter rotating shaft 2. By adjusting the position of the chuck 113, the chuck 113 can open and simultaneously open the adjusting jaw 121 until the adjusting jaw 121 can clamp the large-diameter rotating shaft 2. Then, the rotating shaft 2 is placed at the center of the three adjusting jaws 121, and the position of the chuck 113 is adjusted again to clamp the rotating shaft 2, thereby facilitating the turning of the rotating shaft 2 on the lathe and increasing the clamping range of the chuck.

[0029] Please refer to 5. In the embodiment of this utility model, the connecting rod 122 includes a first connecting part 1221 and a second connecting part 1222. The first connecting part 1221 is inserted into the second step 1133. The second connecting part 1222 fits against the side of the adjusting claw 121 to enhance the structural strength of the adjusting rod 123 under the action of the connecting rod 122. At the same time, under the action of the second connecting part 1222, it can also prevent the adjusting claw 121 from loosening or displacing on the chuck 113, so that the adjusting claw 121 can remain stable when subjected to external force, thereby providing better auxiliary support and clamping force for the machining of the rotating shaft 2.

[0030] In an embodiment of this utility model, the adjusting rod 123 includes a first adjusting part 1231 and a second adjusting part 1232. The first adjusting part 1231 is threadedly connected to the second step 1133, and the second adjusting part 1232 is fitted to the end face of the second connecting part 1222. The adjusting rod 123 fixes the adjusting claw 121 on the pawl 113. At the same time, the adjusting rod 123 can precisely control the position of the adjusting claw 121 on the pawl 113 to accommodate rotating shafts 2 of different diameters.

[0031] In the embodiments of this utility model, the cross-sectional shape of the first connecting part 1221 includes either a circle or a square, so as to increase the structural strength of the first adjusting part 1231 and improve the clamping stability of the adjusting claw 121 on the rotating shaft 2 under the action of the first connecting part 1221.

[0032] In an embodiment of this utility model, the extension component 12 further includes a locking nut 124, which is located between the second adjustment part 1232 and the second connecting part 1222 and is threadedly connected to the first adjustment part 1231, so as to prevent the adjustment rod 123 from loosening during the processing under the action of the locking nut 124, thereby further enhancing the overall stability of the extension component 12.

[0033] In an embodiment of this utility model, the machining fixture 1 further includes a sealing block 13. A through hole is provided at the center of the chuck body 111. The sealing block 13 is threadedly connected to the through hole, and the end face of the sealing block 13 is flush with the end face of the second step 1133. By threading the sealing block 13 to the chuck body 111 and making the end face of the sealing block 13 flush with the end face of the second step 1133, the end face of the rotating shaft 2 can be attached to the sealing block 13 and the second step 1133 when clamping the rotating shaft 2, thereby increasing the fit between the rotating shaft 2 and the chuck, and enabling the rotating shaft 2 to withstand greater cutting force, centrifugal force and other external forces during the machining process, thereby improving the machining accuracy.

[0034] In an embodiment of this utility model, threaded holes are provided around the sealing block 13. The first adjustment part 1231 passes through the second step 1133 and is threadedly connected to the threaded hole, so that the first adjustment part 1231 is simultaneously fixedly connected to the adjustment claw 121, the clasp 113 and the sealing block 13, further increasing the installation stability of the adjustment claw 121 on the clasp 113.

[0035] In an embodiment of this utility model, the extension component 12 further includes an arc plate 125, which is fixed on the adjusting claw 121 and concentrically arranged with the chuck body 111. Under the action of the arc plate 125, the contact area when clamping the rotating shaft 2 is increased, preventing the rotating shaft 2 from rotating, shifting or vibrating due to its own weight or cutting force, thereby improving the stability of the rotating shaft 2 during the processing.

[0036] In the embodiments of this utility model, the inner surface of the arc plate 125 is provided with an anti-slip layer and / or anti-slip texture, which further increases the clamping stability of the arc plate 125 on the rotating shaft 2 and prevents the rotating shaft 2 from rotating, shifting or vibrating.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. "Above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top," and "on the surface" 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, and therefore should not be construed as a limitation of this utility model.

[0038] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including the combination of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

[0039] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A machining fixture for rotating shafts, characterized in that, The machining jig comprises a chuck assembly and an extension assembly, the chuck assembly comprises a chuck body, an adjusting disc and three chuck claws, the three chuck claws are arrayed along the circumferential direction of the chuck body, the adjusting disc is located inside the chuck body, and the surface of the adjusting disc is provided with a spiral track, each of the three chuck claws is provided with a connecting tooth engaged with the spiral track, and the chuck body is provided with a connecting part connected with the adjusting disc; The extension assembly comprises adjusting claws, a connecting rod and an adjusting rod, the number of the adjusting claws is matched with the number of the chuck claws, the chuck claw is provided with a first step and a second step, the first step is provided with a sliding rail, the adjusting claw is slidingly connected with the sliding rail, the connecting rod passes through the adjusting claw and is inserted into the second step, the adjusting rod passes through the connecting rod and is threadedly connected with the second step, and the end surface of the adjusting claw is higher than the end surface of the second step; The connecting rod comprises a first connecting part and a second connecting part, the first connecting part is insertedly connected with the second step, and the second connecting part is attached to the side surface of the adjusting claw; the adjusting rod comprises a first adjusting part and a second adjusting part, the first adjusting part is threadedly connected with the second step, and the second adjusting part is attached to the end surface of the second connecting part; the machining jig further comprises a sealing block, a through hole is formed at the center position of the chuck body, the sealing block is threadedly connected with the through hole, and the end surface of the sealing block is flush with the end surface of the second step.

2. The machining jig for a rotary shaft according to Claim 1, wherein The cross-sectional shape of the first connecting part comprises any one of a circle or a square.

3. The machining jig for a rotary shaft according to Claim 1, wherein The extension assembly further comprises a locking nut, the locking nut is located between the second adjusting part and the second connecting part and is threadedly connected with the first adjusting part.

4. The machining jig for a rotary shaft according to Claim 1, wherein The periphery of the sealing block is provided with a threaded hole, the first adjusting part passes through the second step and is threadedly connected with the threaded hole.

5. The machining jig for a rotary shaft according to Claim 1, wherein The extension assembly further comprises an arc-shaped plate, the arc-shaped plate is fixed on the adjusting claw and is concentrically arranged with the chuck body.

6. The machining jig for a rotary shaft according to Claim 5, wherein The inner surface of the arc-shaped plate is provided with an anti-slip layer and / or anti-slip lines. The inner surface of the arc-shaped plate is provided with an anti-slip layer and / or anti-slip lines.

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