Positioning tool for machining inner cavity of rear wheel steering motor shell

Abstract

The utility model discloses a positioning tool for processing the inner cavity of a rear wheel steering motor shell, which comprises a chuck, a clamping block, a nesting sleeve and an anti-skid insert, a plurality of radially moving clamping jaws are arranged on the chuck in an annular array, the nesting sleeve is concentrically arranged in the chuck, a plurality of support blocks are arranged at the end part of the nesting sleeve in an annular array, and the anti-skid insert is arranged on the end part of the nesting sleeve. The clamping blocks are arranged on the clamping jaws, arc grooves are formed in the inner ends of the clamping blocks in an inwards-concave mode respectively, clamping grooves corresponding to the anti-skid inserts are formed in the two ends of each arc groove in an inwards-concave mode, the anti-skid inserts are arranged in the clamping grooves, and a plurality of anti-skid protruding points are arranged on the front faces of the anti-skid inserts at intervals. Clamping and fixing are conducted through contact between the anti-skid protruding points and the outer wall of the rear wheel steering motor shell, the anti-skid effect is improved, slipping of the rear wheel steering motor shell is avoided, the end face of the rear wheel steering motor shell is supported and positioned through the supporting blocks, and the positioning effect is improved through cooperation between the fool-proof blocks and the step grooves of the rear wheel steering motor shell.

Description

Technical Field

[0001] This utility model relates to the field of wheel steering motor housing processing technology, and in particular to a positioning tool for processing the inner cavity of a rear wheel steering motor housing. Background Technology

[0002] In order to machine the inner cavity of the rear wheel steering motor housing, it is necessary to first clamp and position the rear wheel steering motor housing to improve the machining accuracy and process stability of the inner cavity and avoid the problem of falling off and causing safety accidents.

[0003] The rear wheel steering motor housing can be clamped using a chuck, but the chuck cannot support and position the end face of the rear wheel steering motor housing, nor can it adapt to the structure on the outer wall of the end of the rear wheel steering motor housing. Moreover, the blank of the rear wheel steering motor housing is made of cast aluminum, and when clamping it with the jaws on the chuck, excessive force can easily cause indentations, while insufficient force can easily cause slippage, making it difficult to control and requiring improvement. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a positioning fixture for machining the inner cavity of the rear wheel steering motor housing, which clamps the end of the rear wheel steering motor housing, improves the positioning effect, and avoids slippage.

[0005] To solve the above-mentioned technical problems, the present invention provides a positioning fixture for machining the inner cavity of a rear wheel steering motor housing, comprising: a chuck, a clamping block, a nest, and an anti-slip insert. The chuck has a ring array of several radially movable jaws. The nest is concentrically arranged in the chuck, and the end of the nest has a ring array of several support blocks. The clamping block is arranged on the jaws. The inner end of the clamping block is respectively provided with an arc groove. The two ends of the arc groove are respectively provided with grooves corresponding to the anti-slip insert. The anti-slip insert is arranged in the groove. The front of the anti-slip insert is provided with a number of anti-slip protrusions at intervals.

[0006] In a preferred embodiment of the present invention, a fixing block extending to the end face of the chuck is provided on the outer side of the support block, and a first screw connected to the chuck is provided on the fixing block.

[0007] In a preferred embodiment of the present invention, the clamping block is provided with a plurality of first stepped holes pointing to the claws, and a second screw connected to the claws is provided in the first stepped holes.

[0008] In a preferred embodiment of the present invention, the clamping block is provided with positioning plates extending to both sides of the claw.

[0009] In a preferred embodiment of this utility model, the anti-slip protrusions adopt a square pyramid structure.

[0010] In a preferred embodiment of this utility model, the anti-slip insert and the anti-slip protrusion adopt an integrated structure.

[0011] In a preferred embodiment of the present invention, the clamping block is provided with a second stepped hole communicating with the slot, and a third screw connected to the anti-slip insert is provided in the second stepped hole.

[0012] In a preferred embodiment of the present invention, a stepped groove is provided in the recessed edge of the rear wheel steering motor housing, and a mis-proof block corresponding to the stepped groove is provided in one of the clamping blocks.

[0013] In a preferred embodiment of the present invention, the anti-foolproof block is provided with a third stepped hole, and a fourth screw connected to the clamping block is provided in the third stepped hole.

[0014] In a preferred embodiment of the present invention, a raised rib is provided on the outer side of the end of the rear wheel steering motor housing, and a clearance groove corresponding to the raised rib is provided in the arc groove.

[0015] The beneficial effects of this utility model are as follows: The positioning fixture for machining the inner cavity of the rear wheel steering motor housing disclosed in this utility model supports and positions the end face of the rear wheel steering motor housing through the support block, and uses the anti-slip protrusions on the anti-slip insert to contact the outer wall of the rear wheel steering motor housing for clamping and fixing, thereby improving the anti-slip effect and preventing the rear wheel steering motor housing from slipping off. It can also use the anti-fouling block to cooperate with the stepped groove of the rear wheel steering motor housing to ensure the angle during installation, avoid the problem of clamping misalignment, and improve the positioning effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0017] Figure 1 This is a schematic diagram of a preferred embodiment of a positioning fixture for machining the inner cavity of a rear wheel steering motor housing according to this utility model;

[0018] Figure 2 This is a schematic diagram of a preferred embodiment of the positioning fixture for machining the inner cavity of the rear wheel steering motor housing according to the present invention, which clamps the rear wheel steering motor housing.

[0019] Figure 3 This is a schematic diagram of a preferred embodiment of the positioning fixture for machining the inner cavity of the rear wheel steering motor housing according to the present invention, used for disassembling and assembling the rear wheel steering motor housing. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Please see Figures 1-3 The embodiments of this utility model include:

[0022] like Figure 1 The positioning fixture shown is used for machining the inner cavity of the rear wheel steering motor housing. It is used for external clamping of the rear wheel steering motor housing 14. It includes: chuck 1, clamping block 2, nesting 13 and anti-slip insert 7. The chuck 1 is provided with three radially movable jaws 6 in a circular array. The three jaws 6 can move synchronously, and the self-centering effect during clamping is good.

[0023] The nested 13 is concentrically arranged in the chuck 1, and several support blocks 12 are arranged in a circular array at the end of the nested 13. The support blocks 12 provide multi-point support for the end of the rear wheel steering motor housing 14, achieving axial positioning. In this embodiment, a fixing block 4 extending to the end face of the chuck 1 is provided on the outside of the support block 12. The fixing block 4 is provided with a first screw 3 connected to the chuck 1 to achieve the installation and fixation of the fixing block 4. The nested 13, support blocks 12 and fixing blocks 4 adopt an integrated steel structure, which has high stability.

[0024] The clamping block 2 is mounted on the jaw 6 and moves synchronously with the jaw 6. Positioning plates 19 extending to both sides of the jaw 6 are provided on the clamping block 2 to prevent lateral wobbling, ensuring structural stability and convenient assembly. Figure 3 As shown, the clamping block 2 is provided with several first stepped holes 18 pointing to the claw 6. The first stepped holes 18 are provided with second screws that connect to the claw 6, so as to fix the clamping block 2 on the claw 6.

[0025] An arc groove 9 is recessed at the inner end of the clamping block 2. At both ends of the arc groove 9 are recessed slots 10 corresponding to the anti-slip insert 7. The anti-slip insert 7 is positioned precisely within the slots 10. In this embodiment, the clamping block 2 has a second stepped hole 5 communicating with the slot 10. A third screw, connected to the anti-slip insert 7, is installed in the second stepped hole 5 for fixing the anti-slip insert 7, making disassembly and replacement convenient.

[0026] Several anti-slip protrusions 8 are spaced apart on the front of the anti-slip insert 7, such as... Figure 1As shown, the anti-slip protrusions 8 adopt a square pyramid structure. Multiple anti-slip protrusions 8 contact the outer wall of the rear wheel steering motor housing 14 for clamping and fixing, improving the anti-slip effect and preventing the rear wheel steering motor housing 14 from slipping off. In this embodiment, the anti-slip inserts 7 and the anti-slip protrusions 8 adopt an integrated metal structure, such as a steel or copper structure. When the anti-slip inserts 7 contact the rear wheel steering motor housing 14, the cooperation of multiple anti-slip inserts 7 increases the frictional force in contact with the outer wall of the rear wheel steering motor housing 14, resulting in high stability and preventing damage to the rear wheel steering motor housing 14.

[0027] like Figure 2 As shown, a raised rib 15 is provided on the outer side of the end of the rear wheel steering motor housing 14, and a relief groove 11 corresponding to the raised rib 15 is provided in the arc groove 9 to avoid the raised rib 15 and ensure that the anti-slip protrusion 8 contacts the outer wall of the rear wheel steering motor housing 14.

[0028] A stepped groove 16 is recessed at the end edge of the rear wheel steering motor housing 14. One of the clamping blocks 2 is provided with a foolproof block 17 corresponding to the stepped groove 16. During the clamping process, the foolproof block 17 cooperates with the stepped groove 16 of the rear wheel steering motor housing 14 to ensure the angle of the rear wheel steering motor housing 14 during installation and avoid the problem of misalignment during clamping.

[0029] like Figure 3 As shown, the anti-fool block 17 is provided with a third stepped hole, and a fourth screw 20 connected to the clamping block 2 is provided in the third stepped hole to fix the anti-fool block 17. The third stepped hole provides good concealment of the head of the fourth screw 20, ensuring the flatness of the top surface of the anti-fool block 17 and its fit with the stepped groove 16.

[0030] In summary, the positioning fixture for machining the inner cavity of the rear wheel steering motor housing disclosed in this utility model can clamp and fix one end of the rear wheel steering motor housing, facilitating machining of the inner cavity from the other end. It has high stability and avoids slippage of the rear wheel steering motor housing.

[0031] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A positioning fixture for machining the inner cavity of a rear wheel steering motor housing, used for external clamping of the rear wheel steering motor housing, characterized in that, include: The chuck comprises a chuck, clamping blocks, a nest, and an anti-slip insert. The chuck has several radially movable jaws arranged in a circular array. The nest is concentrically arranged in the chuck, and several support blocks are arranged in a circular array at the end of the nest. The clamping blocks are arranged on the jaws, and the inner ends of the clamping blocks are respectively provided with arc grooves. The two ends of the arc grooves are respectively provided with grooves corresponding to the anti-slip insert. The anti-slip insert is arranged in the grooves, and the front of the anti-slip insert is provided with several anti-slip protrusions at intervals.

2. The positioning tool for processing the inner cavity of the rear wheel steering motor housing according to claim 1, characterized in that, A fixing block extending to the end face of the chuck is provided on the outer side of the support block, and a first screw connected to the chuck is provided on the fixing block.

3. The rear wheel steering motor housing inner cavity machining positioning tooling of claim 1, wherein, The clamping block is provided with several first stepped holes pointing to the claws, and a second screw connected to the claws is provided in the first stepped holes.

4. The rear wheel steering motor housing inner cavity machining positioning tooling of claim 1, wherein, The clamping block is provided with positioning plates extending to both sides of the jaws.

5. The rear wheel steering motor housing inner cavity machining positioning tooling of claim 1, wherein, The anti-slip protrusions adopt a square pyramid structure.

6. The rear wheel steering motor housing inner cavity machining positioning tooling of claim 1, wherein, The anti-slip insert and anti-slip protrusions are integrated into one structure.

7. The rear wheel steering motor housing inner cavity machining positioning tooling of claim 1, wherein, The clamping block is provided with a second stepped hole communicating with the slot, and a third screw connected to the anti-slip insert is provided in the second stepped hole.

8. The rear wheel steering motor housing inner cavity machining positioning tooling fixture of claim 1, wherein, The rear wheel steering motor housing has a stepped groove recessed at the end edge, and one of the clamping blocks has a foolproof block corresponding to the stepped groove.

9. The rear wheel steering motor housing inner cavity machining positioning tooling of claim 8, wherein, The anti-foolproof block is provided with a third step hole, and a fourth screw connected to the clamping block is provided in the third step hole.

10. The positioning fixture for machining the inner cavity of the rear wheel steering motor housing according to claim 1, characterized in that, The outer side of the end of the rear wheel steering motor housing is provided with a raised rib, and the arc groove is provided with a relief groove corresponding to the raised rib.

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