Outer positioning device for machining gearbox shell

Abstract

The utility model discloses an external positioning device for machining a gearbox shell. The external positioning device comprises a positioning seat, an angular positioning assembly and a middle elastic positioning pin which are connected in sequence. Angular positioning and middle positioning are combined, the height and angle of a to-be-machined area of a workpiece can be positioned in advance from the outside, the workpiece is clamped for next machining after positioning is completed, and the positioning precision of the workpiece can be improved; wherein the first elastic element and the second elastic element can ensure the stress of a workpiece during positioning, other positions are not damaged, and meanwhile, the workpiece is not damaged; the positioning seat can be combined with a processing machine tool, after positioning is completed, the whole positioning seat is replaced with a processing tool to process a workpiece, and the operation of alignment during processing can be omitted.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining auxiliary tooling, and particularly relates to an external positioning device for machining a gearbox housing. Background Art

[0002] The gearbox is one of the important parts of the car and has a great impact on the overall performance of the car. The gearbox housing is a shell structure used to install the gearbox transmission mechanism and related accessories. The gearbox housing needs to go through multiple processes such as cutting and grinding during the production process. In order to ensure the processing accuracy, the gearbox housing needs to be fixed and positioned during processing. At present, a fixture is usually used to clamp the gearbox housing to be processed before processing. However, when the fixture clamps the workpiece, how to ensure that the height and angle of the workpiece to be processed match the processing station is still a major difficulty.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0004] The purpose of the utility model is to provide an external positioning device for machining a gearbox housing, thereby overcoming the defects in the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides an external positioning device for machining a gearbox housing, comprising a positioning seat, an angular positioning assembly and a middle elastic positioning pin connected in sequence.

[0006] Further, as a preference, the angular positioning assembly includes a connecting plate, an angular positioning head arranged on the connecting plate, the angular positioning head is connected to the positioning seat, and a first elastic element is provided in the positioning seat near the angular positioning head; the middle elastic positioning pin is arranged on the connecting plate, and a second elastic element is provided at its tail; wherein the first elastic element and the second elastic element are used to ensure the magnitude of the force applied to the workpiece when the angular positioning head and the middle elastic positioning pin position the workpiece.

[0007] Furthermore, preferably, there are at least two angular positioning heads; two or more angular positioning heads can improve the positioning accuracy.

[0008] Furthermore, as a preference, each angular positioning head is equipped with at least two first elastic elements; adopting two or more designs can improve the stability of the angular positioning needle.

[0009] Furthermore, preferably, the first elastic element and the second elastic element are telescopic springs.

[0010] Further, as a preference, the positioning seat comprises a positioning seat body and a tool handle, and the positioning seat body is connected to the angular positioning assembly.

[0011] Furthermore, preferably, a mounting slot is provided on the positioning seat body, and a mounting protrusion is correspondingly provided on the tool handle, and the mounting protrusion is snapped into the mounting slot; the structural design of the mounting slot and the mounting protrusion can realize rapid assembly between the two.

[0012] Further, as a preference, the positioning seat body and the tool handle are locked by screws.

[0013] Compared with the prior art, one aspect of the utility model has the following beneficial effects:

[0014] The utility model combines angular positioning and intermediate positioning, and can position the height and angle of the workpiece to be processed from the outside. After positioning is completed, the workpiece can be clamped for the next step of processing, which can improve the positioning accuracy of the workpiece.

[0015] The utility model provides a first elastic element and a second elastic element, which can ensure the force applied to the workpiece during positioning, without destroying other positioning and without damaging the workpiece;

[0016] The positioning seat of the utility model can be combined with a processing machine tool, and after positioning is completed, the whole can be replaced with a processing tool to process the workpiece, which can save the operation of re-positioning during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of an external positioning device for machining a gearbox housing according to the utility model;

[0018] Figure 2 This is an exploded schematic diagram of an external positioning device for machining a gearbox housing according to the utility model;

[0019] Figure 3 It is a partial structural enlarged schematic diagram of an external positioning device for machining a gearbox housing of the utility model;

[0020] Figure 4 It is a cross-sectional view of an external positioning device for machining a gearbox housing according to the utility model;

[0021] Figure 5 It is an enlarged cross-sectional view of a part of the structure of an external positioning device for machining a gearbox housing of the utility model;

[0022] Figure 6 It is a schematic diagram of the alignment of an external positioning device for machining a gearbox housing with a workpiece according to the utility model;

[0023] Figure markings: 1-positioning seat, 11-positioning seat body, 111-mounting slot, 12-tool handle, 121-mounting protrusion, 2-angular positioning assembly, 21-connecting plate, 22-angular positioning head, 221-supporting head, 222-guide support rod, 223-oil-free bushing, 3-middle elastic positioning pin, 4-first elastic element, 5-second elastic element, 6-screw. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0025] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components. Example

[0026] like Figure 1-5 As shown, an external positioning device for machining a gearbox housing comprises a positioning seat 1, an angular positioning assembly 2 and a middle elastic positioning pin 3 which are connected in sequence.

[0027] In this embodiment, the angular positioning assembly 2 includes a connecting plate 21 and an angular positioning head 22 arranged on the connecting plate 21. The angular positioning head 22 is connected to the positioning seat 1, and a first elastic element 4 is provided in the positioning seat 1 near the angular positioning head 22; the middle elastic positioning pin 3 is arranged on the connecting plate 21, and a second elastic element 5 is provided at its tail; wherein the first elastic element 4 and the second elastic element 5 are used to ensure the magnitude of the force applied to the workpiece when the angular positioning head 22 and the middle elastic positioning pin 3 position the workpiece.

[0028] More specifically, the angular positioning head 22 is composed of the following parts: a front supporting head 221 and a guide support rod 222. The supporting head 221 is used to align with the workpiece, wherein the guide support rod 222 is covered with an oil-free bushing 223, and the guide support rod 222 is locked with the connecting plate 21 by bolts, screws, etc. The tail part covered with the oil-free bushing 223 is installed in the positioning seat 1, and the second elastic element 5 can control the guide support rod 222 to ensure the force on the workpiece when the supporting head 221 is aligned with the workpiece.

[0029] In this embodiment, as a specific solution, there are at least two angular positioning heads 22; two or more angular positioning heads can improve the positioning accuracy.

[0030] In this embodiment, as a specific solution, each angular positioning head 22 is equipped with at least two first elastic elements 4; the use of two or more designs can improve the stability of the angular positioning needle.

[0031] In this embodiment, as a specific solution, the first elastic element 4 and the second elastic element 5 can be telescopic springs.

[0032] In this embodiment, as a specific solution, the positioning seat 1 includes a positioning seat body 11 and a tool handle 12, and the positioning seat body 11 is connected to the angular positioning assembly 2; the tool handle 12 is used to connect to the spindle of the machine tool. When the positioning is completed, the part other than the tool handle 12 is replaced with a tool to process the workpiece.

[0033] In this embodiment, as a specific solution, a mounting slot 111 is provided on the positioning seat body 11, and a mounting protrusion 121 is correspondingly provided on the knife handle 12, and the mounting protrusion 121 is snapped into the mounting slot 111; the structural design of the mounting slot 111 and the mounting protrusion 121 can realize rapid assembly between the two; when the two are quickly assembled, the two are fixed from one side of the positioning seat body 11 with a screw 6.

[0034] The working principle of the utility model is as follows:

[0035] like Figure 6 As shown, after the gearbox housing workpiece to be processed has completed the centering in the previous step, the height and angle are positioned from the outside using the utility model. Specifically, the positioning seat 1 is installed on the spindle of the processing machine tool, and the workpiece to be processed is aligned with the angular positioning component 2 and the middle elastic positioning pin 3, wherein the angular positioning head 22 and the middle elastic positioning pin 3 are respectively pushed to the corresponding positions of the workpiece, and the angular positioning head 22 positions the angle of the workpiece, and the middle elastic positioning pin 3 positions the height of the workpiece. Specifically, since the angular positioning component 2 and the middle elastic positioning pin 3 are fixed in position, when the angle, height, etc. of the workpiece do not reach the position required for processing, the workpiece can be fine-tuned, and when the workpiece is completely aligned with the angular positioning component 2 and the middle elastic positioning pin 3, other clamps can be used to lock the workpiece to complete the positioning; the positioning seat 1 is replaced as a whole with a processing tool to proceed to the next step of workpiece processing.

[0036] The utility model combines angular positioning and intermediate positioning, and can pre-position the height and angle of the area to be processed of the workpiece from the outside. After the positioning is completed, the workpiece can be clamped for the next step of processing, which can improve the accuracy of workpiece positioning; the first elastic element and the second elastic element can ensure the force applied to the workpiece during positioning without destroying other positioning and at the same time without damaging the workpiece; the positioning seat of the utility model can be combined with a processing machine tool, and after the positioning is completed, the whole can be replaced with a processing tool to process the workpiece, which can save the operation of re-alignment during processing.

[0037] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. An external positioning device for gearbox housing processing, characterized in that: It includes a positioning seat, an angular positioning assembly and a middle elastic positioning pin connected in sequence; the angular positioning assembly includes a connecting plate, an angular positioning head arranged on the connecting plate, the angular positioning head is connected to the positioning seat, and a first elastic element is arranged in the positioning seat near the angular positioning head; the middle elastic positioning pin is arranged on the connecting plate, and a second elastic element is arranged at the tail of the middle elastic positioning pin.

2. The external positioning device for gearbox housing processing according to claim 1, characterized in that: The first elastic element and the second elastic element are telescopic springs.

3. The external positioning device for gearbox housing processing according to claim 1, characterized in that: The positioning seat comprises a positioning seat body and a tool handle, and the positioning seat body is connected to the angular positioning assembly.

4. The external positioning device for gearbox housing processing according to claim 3, characterized in that: The positioning seat body is provided with a mounting slot, and the knife handle is correspondingly provided with a mounting protrusion, and the mounting protrusion is clamped in the mounting slot.

5. The external positioning device for gearbox housing processing according to claim 4, characterized in that: The positioning seat body and the tool handle are locked by screws.

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