Auxiliary positioning tool for internal tooth machining

Abstract

The utility model discloses an internal tooth machining auxiliary positioning tool which comprises a base and a mandrel, a plurality of fixing grooves are evenly formed in the edge of the base, a protruding positioning seat is arranged in the center of the base, a positioning groove is formed in the center of the positioning seat, the mandrel is placed in the positioning groove, and the height of the mandrel is larger than the depth of the positioning groove. A plurality of threaded holes are evenly formed in the positioning groove, counterbores corresponding to the threaded holes are evenly formed in the mandrel, and fixing bolts are arranged in the counterbores and penetrate through the counterbores to be in threaded connection with the interiors of the threaded holes. Through holes used for inner tooth machining are formed in the center of the base and the center of the mandrel. The positioning tool is simple in structure and easy and convenient to operate, accurate positioning of parts can be achieved, and the machining efficiency of the inner teeth can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to part processing equipment technical field, especially a internal tooth processing auxiliary positioning frock. BACKGROUND

[0002] Internal tooth processing refers to the internal straight tooth or internal helical tooth that is processed on the inner wall of a part by a gear shaping machine or a gear grinding machine. Taking gear shaping processing as an example, the gear shaping cutter performs up-down reciprocating cutting motion to process straight teeth on the inner wall of the part, and then the gear shaping cutter performs revolution motion along the inner wall of the part to process internal straight teeth in the circumferential direction of the inner wall of the part. In the processing process, the most important thing is to ensure the accuracy of processing, that is, the positioning of the part needs to be accurate and stable, which requires setting a corresponding positioning frock to assist the part to complete accurate positioning. However, the existing positioning frock has a complex structure and is cumbersome to operate, and the processing efficiency is low. SUMMARY

[0003] The utility model aims at providing a internal tooth processing auxiliary positioning frock, this positioning frock simple structure, easy operation, can realize the accurate positioning of part, can improve the processing efficiency of internal tooth.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a internal tooth processing auxiliary positioning frock, including base and mandrel, the edge of base is evenly provided with a plurality of fixed slots, the center of base is provided with the positioning seat of convex, the center of positioning seat is provided with the positioning slot, the mandrel is placed in the positioning slot, the height of mandrel is greater than the depth of positioning slot;The positioning slot is evenly provided with a plurality of threaded holes, the mandrel is evenly provided with the countersunk hole corresponding with the threaded hole, the fixed bolt is set in the countersunk hole, and the fixed bolt is threadedly connected in the threaded hole through the countersunk hole;The center of base and mandrel is provided with the through hole for internal tooth processing.

[0005] Optionally, the side wall of the positioning slot is set as an inner taper surface, and the outer periphery of the bottom of the mandrel is provided with an outer taper surface matched with the inner taper surface.

[0006] Optionally, the edge of the positioning seat is further provided with symmetrically arranged core removal grooves, the core removal grooves penetrate through the edge of the positioning seat, and the depth of the core removal grooves is greater than the depth of the positioning slot.

[0007] Optionally, the outer periphery of the bottom of the mandrel is provided with a limiting ring.

[0008] Optionally, the outer diameter of the limiting ring is the same as the inner diameter of the positioning slot.

[0009] The internal tooth processing auxiliary positioning frock has the following advantages:

[0010] (1) The base is fixedly connected to the machine tool, the part to be processed is sleeved outside the mandrel, then the mandrel is placed in the positioning groove to be fixed, so that the accurate positioning of the part can be realized, the positioning process of the part and the machine tool is converted by the base and the mandrel, the overall structure is simple, the operation is simple, and the efficiency of the internal tooth processing is improved.

[0011] (2) When the inner taper surface of the positioning groove cooperates with the outer taper surface of the mandrel, the position can be automatically adjusted, so that the positioning of the mandrel and the base is more convenient and accurate.

[0012] (3) The core removal groove can provide space for the disassembly of the mandrel, so that the mandrel can be taken out of the positioning groove. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the utility model.

[0014] Figure 2 is a top view of the utility model.

[0015] Figure 3 is a cross-sectional interface schematic view of the utility model.

[0016] Figure 4 is Figure 3 the enlarged schematic view of part A in the figure. DETAILED DESCRIPTION

[0017] The utility model will be further described in combination with the drawings.

[0018] For example, Figures 1-4As shown, an inner tooth processing auxiliary positioning tool includes a base 1 and a mandrel 2, the center of the base 1 and the mandrel 2 is provided with a through hole 3 for inner tooth processing, the edge of the base 1 is uniformly provided with a plurality of fixing grooves 4 matched with the positioning mechanism on the machine tool, and the base 1 can be fixedly connected on the machine tool. The center of the base 1 is provided with a raised positioning seat 5, the center of the positioning seat 5 is provided with a positioning groove 6, the mandrel 2 is placed in the positioning groove 6, the height of the mandrel 2 is greater than the depth of the positioning groove 6, and the part to be processed is sleeved outside the mandrel 2. The bottom of the positioning groove 6 is uniformly provided with a plurality of threaded holes 7, the top of the mandrel 2 is uniformly provided with a countersunk hole 8 corresponding to the threaded hole 7, a fixing bolt 9 is arranged in the countersunk hole 8, and the fixing bolt 9 is threadedly connected in the threaded hole 7 through the countersunk hole 8. The side wall of the positioning groove 6 is provided as an inner tapered surface 12, the outer periphery of the bottom of the mandrel 2 is provided with an outer tapered surface 13 matched with the inner tapered surface 12, when the inner tapered surface 12 cooperates with the outer tapered surface 13, the mandrel 2 will automatically slide down and align at the center position of the positioning groove 6, the positioning is accurate, and the time for adjusting the mandrel 2 is saved. The edge of the positioning seat 5 is also provided with symmetrically arranged core removal grooves 10, the core removal grooves 10 penetrate through the edge of the positioning seat 5, the depth of the core removal groove 10 is greater than the depth of the positioning groove 6, the outer periphery of the bottom of the mandrel 2 is provided with a limiting ring 11, the outer diameter of the limiting ring 11 is the same as the inner diameter of the positioning groove 6, and the outer tapered surface 13 is arranged on the outer periphery of the limiting ring 11. The limiting ring 11 is matched with the positioning groove 6, which can avoid the mandrel 2 from shaking in the positioning groove 6, improve the accuracy and stability of the connection between the mandrel 2 and the base 1, and when the mandrel 2 is fixed in the placing groove, there is a gap left by the core removal groove 10 at the bottom of the limiting ring 11, so that the staff can take out the mandrel 2 more easily, and the mandrel 2 is convenient to disassemble.

[0019] The base 1 is fixedly connected on the machine tool, the part to be processed is sleeved outside the mandrel 2, and then the mandrel 2 is placed in the positioning groove 6 to be fixed, so that the accurate positioning of the part is realized. The positioning tool converts the positioning of the original part and the machine tool into the positioning of the base 1 and the mandrel 2, the positioning is more accurate, the operation is more simple, and the quality and efficiency of the inner tooth processing are improved.

[0020] The above-described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

Claims

1. An inner tooth processing auxiliary positioning tool, characterized in that: The application relates to a base and a mandrel, edges of the base are uniformly provided with a plurality of fixing grooves, the center of the base is provided with a convex positioning seat, the center of the positioning seat is provided with a positioning groove, the mandrel is placed in the positioning groove, the height of the mandrel is greater than the depth of the positioning groove, a plurality of threaded holes are uniformly provided in the positioning groove, a countersunk hole corresponding to the threaded hole is uniformly provided on the mandrel, a fixing bolt is arranged in the countersunk hole, the fixing bolt is threadedly connected in the threaded hole through the countersunk hole, and a through hole for processing inner teeth is arranged in the center of the base and the mandrel.

2. The inner tooth processing auxiliary positioning tooling of claim 1, wherein: The side wall of the positioning groove is provided as an inner taper surface, and the outer periphery of the bottom of the mandrel is provided with an outer taper surface matched with the inner taper surface.

3. The inner tooth processing auxiliary positioning tooling of claim 1, wherein: The edge of the positioning seat is further provided with symmetrically-arranged core-removing grooves which penetrate through the edge of the positioning seat, and the depth of the core-removing grooves is greater than the depth of the positioning groove.

4. The inner tooth processing auxiliary positioning tooling of claim 1, wherein: The outer periphery of the bottom of the mandrel is provided with a limiting ring.

5. The inner tooth processing auxiliary positioning tooling fixture according to claim 4, characterized in that: The outer diameter of the limiting ring is the same as the inner diameter of the positioning groove.

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