CN218425654U

CN218425654U - Expansion sleeve assembly machining tool

Info

Publication number: CN218425654U
Application number: CN202222365385.4U
Authority: CN
Inventors: 林斌; 宋蓓; 周靓毅; 刘中华; 林绿高; 应景波
Original assignee: Zhejiang Chr Intelligent Equipment Co ltd
Current assignee: Zhejiang Chr Intelligent Equipment Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2023-02-03
Anticipated expiration: 2032-09-06

Abstract

The utility model discloses an expansion sleeve component processing tool, which comprises an expansion sleeve, a process disc and a positioning sleeve; one end of the process disc is fixedly connected with the three-jaw chuck, the other end of the process disc is fixedly connected with the expansion sleeve, a positioning sleeve is arranged between the process disc and the expansion sleeve, and a gap is reserved between the expansion sleeve and the process disc through the positioning sleeve, so that the inner diameter, the outer diameter and the front end face of the expansion sleeve can be processed at one time. The utility model provides a frock and processing technology thinking for lathe work improves and is thinner like the inside and outside wall of the cover class that expands, and the machining precision of the part that needs lathe work such as the dish class that the processing is easy to be out of shape, axle type.

Description

Expansion sleeve assembly machining tool

Technical Field

The utility model relates to a parts machining technology technical field especially relates to an bloated cover subassembly processing frock.

Background

The mortise broaching machine is used for processing disc workpieces (such as wheel discs including compressor discs and turbine discs) or large annular thin-wall workpieces in aero-engines and gas turbines, is special in use occasions, parts processed by the mortise broaching machine have special requirements on high temperature resistance, corrosion resistance and the like, and the parts are made of materials which are difficult to process, such as stainless steel (2 Cr 13), titanium alloy, high-temperature nickel-based alloy and the like.

The numerical control indexing table is a core component of the mortise broaching machine, has strict requirements on the numerical control indexing table, can bear huge cutting force within 0.015mm of positioning precision and within 0.010 of repeated positioning precision even if accurate indexing is required, and can bear more than 20 tons of cutting force. Therefore, the common numerical control indexing rotary table cannot be used on the mortise broaching machine, and the mortise broaching machine needs a special numerical control indexing rotary table.

The expansion sleeve is used as a key part of the special numerical control indexing rotary table, the expansion sleeve adopts a tire type annular sealing structure and is separated into an inner cavity and an outer cavity, so that the machining precision is influenced if the clamping is unreasonable when the special structure is machined, and the positioning precision and the repeated positioning precision of the numerical control indexing rotary table are directly influenced by the precision of the expansion sleeve. And the numerical control indexing rotary table with different specifications is required to be arranged according to the specification and size of the machined part, namely the expansion sleeve with corresponding specification is also required. The outer diameter of the disc part processed by the mortise broaching machine is within the range of 100mm-3000mm, the size of the processed part determines the size of the numerical control indexing turntable, and the size of the expansion sleeve is also determined, so the expansion sleeve also has a certain specification range. And the high-precision special numerical control indexing table also determines the high-precision requirement of the core parts.

The expansion sleeve processing tool is designed according to the requirements, expansion sleeves of various specifications can be processed on a common lathe, and the inner diameter, the outer diameter and the front end face of each expansion sleeve need to be processed at one time, so that the processing precision requirement of the expansion sleeves is easily guaranteed. Of course, the precision run-out of the lathe spindle for machining the expansion sleeve must be within 0.005 mm. Moreover, the expansion sleeve processing process disc can meet the requirements of processing expansion sleeves of different specifications, waste caused by improper clamping is reduced, and the processing success rate of the expansion sleeves is greatly improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a core spare-frock clamp for processing of cover that expands to special numerical control graduation revolving stage. Because the expanding sleeve adopts a tire type annular sealing structure, the expanding sleeve is separated into an inner cavity and an outer cavity, the inner wall and the outer wall of the expanding sleeve are thin, and the expanding sleeve is easy to deform during processing. And the expansion sleeve has larger specification and can not be directly clamped on a lathe for turning like common disc parts, so the expansion sleeve processing tool is designed and a process idea is provided.

The technical scheme of the utility model as follows:

an expansion sleeve assembly processing tool comprises an expansion sleeve, a process disc and a positioning sleeve; one end of the process disc is fixedly connected with the three-jaw chuck, the other end of the process disc is fixedly connected with the expansion sleeve, a positioning sleeve is arranged between the process disc and the expansion sleeve, and a gap is reserved between the expansion sleeve and the process disc through the positioning sleeve, so that the inner diameter, the outer diameter and the front end face of the expansion sleeve can be processed at one time.

The expansion sleeve is connected to the process disc through screws, different screw holes in the process disc are selected for the expansion sleeves with different specifications, and the expansion sleeves are preferably connected with 4 screws or more and are uniformly arranged at angles.

The rear counter bore of the expansion sleeve mounting screw is provided with the positioning sleeve, the outer diameter of the positioning sleeve is matched with the rear counter bore of the expansion sleeve, the thickness of the positioning sleeve is larger than that of the counter bore, a gap exists between the expansion sleeve and the process disc, the inner diameter, the outer diameter and the front end face of the expansion sleeve are conveniently machined at one time, and the machining precision requirement of the expansion sleeve is easily guaranteed. Note that: the precision run-out of the lathe spindle for processing the expansion sleeve must be within 0.005 mm.

Furthermore, the process disc comprises a main disc, wherein an installation disc protruding outwards is arranged on one end face of the main disc and is connected with the lathe three-jaw chuck through the installation disc.

Furthermore, a plurality of connecting screw holes are formed in the other end face of the main body disc, and the connecting screw holes are uniformly arranged in the circumferential direction and the diameter direction of the main body disc.

Furthermore, the end face of the process disc with the connecting screw hole is processed by 0.2mm to be used as a processing and positioning reference face.

Furthermore, the positioning sleeve is arranged in a rear counter bore of the expansion sleeve, and the height of the positioning sleeve is greater than the depth of the rear counter bore of the expansion sleeve.

The beneficial effects of the utility model are as follows:

1) The utility model provides an expand the inside and outside wall of cover class thinner, the processing problem of the part that needs lathe work such as the easy dish class that warp of processing, axle type.

2) The tool can enable the expansion sleeves of various specifications to be processed on a common lathe, and the inner diameter, the outer diameter and the front end face of each expansion sleeve need to be processed at one time, so that the processing precision requirement of the expansion sleeves is easily guaranteed.

Drawings

Fig. 1 is an assembly schematic diagram of the tool of the present invention;

FIG. 2 is a schematic view of the expanding sleeve of the processing part of the present invention;

FIG. 3 is a schematic view of the process of the present invention;

FIG. 4 is a schematic view of the end face of the process disk of the present invention;

in the figure: 1. a three-jaw chuck; 2. a process disc; 201. a main body disc; 202. mounting a disc; 203. connecting screw holes; 3. a positioning sleeve; 4. a screw; 5. expanding the sleeve; 501. and a rear counter bore.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1-4, the expansion sleeve assembly processing tool comprises a three-jaw chuck 1, a process disc 2, a positioning sleeve 3, a screw 4 and an expansion sleeve 5.

The expansion sleeve 5 is a tire type annular sealing structure and is divided into an inner cavity and an outer cavity, the inner wall and the outer wall of the expansion sleeve are thin, and the expansion sleeve is easy to deform during processing; the inner diameter phi D, the outer diameter phi D and the thickness H of the expansion sleeve have multiple specifications and high precision requirement.

The process disc 2 is disc-shaped (a main disc 201), an installation disc 202 (a back step) with an outer bulge is arranged at the back end and used for clamping a three-jaw chuck of a lathe, and a plurality of connecting screw holes 203 with different circumferences and graduation are arranged on the disc surface of the process disc 2 and are suitable for expansion sleeve sizes with different specifications.

The main body disc 201 and the installation disc 202 of the process disc 2 generally adopt an integral structure; in order to reduce the weight of the process disk 2 and facilitate the transportation of the operator, a lightening hole may be provided at the center of the main body disk 201 and the mounting disk 202.

The positioning sleeve 3 is a metal sleeve in a hollow cylindrical state, and the positioning sleeve 3 is used for adjusting the distance between the process disc 2 and the expansion sleeve 5 and has a positioning effect.

And clamping the back step of the process disc 2 on a three-jaw chuck of a lathe, clamping the three-jaw chuck, machining the end surface A of the process disc 2 by 0.2mm after clamping, and taking the end surface A as a machining positioning reference surface. And then the positioning sleeve 3 is embedded into the rear counter bore 501 of the expansion sleeve 5, the thickness of the positioning sleeve 3 is higher than that of the counter bore, so that a gap exists between the expansion sleeve 5 and the process disc 2, the inner diameter phi D, the outer diameter phi D and the front end face B of the expansion sleeve 5 can be conveniently machined at one time, and the machining precision requirement of the expansion sleeve is easily guaranteed.

Note that: the precision run-out of the lathe spindle for processing the expansion sleeve must be within 0.005 mm. After the positioning sleeve 3 is installed, the expansion sleeve 5 with the positioning sleeve 3 is installed on the process disc 2, and the expansion sleeve 5, the positioning sleeve 3 and the process disc 2 are connected into a whole through the screw 4, so that the size of the expansion sleeve can be machined.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.

Claims

1. The expansion sleeve assembly processing tool is characterized by comprising an expansion sleeve (5), a process disc (2) and a positioning sleeve (3); one end of the process disc (2) is fixedly connected with the three-jaw chuck, the other end of the process disc is fixedly connected with the expansion sleeve (5), the positioning sleeve (3) is arranged between the process disc (2) and the expansion sleeve (5), and a gap is reserved between the expansion sleeve (5) and the process disc (2) through the positioning sleeve (3), so that the inner diameter, the outer diameter and the front end face of the expansion sleeve (5) can be machined at one time.

2. The machining tool for the expansion sleeve assembly according to claim 1, wherein the process disc (2) comprises a main body disc (201), one end face of the main body disc (201) is provided with an outwardly convex mounting disc (202), and the main body disc is connected with a lathe three-jaw chuck through the mounting disc (202).

3. The expansion sleeve assembly processing tool according to claim 2, wherein a plurality of connecting screw holes (203) are formed in the other end face of the main body disc (201), and the connecting screw holes (203) are uniformly arranged in the circumferential direction and the diameter direction of the main body disc (201).

4. The machining tool for the expansion sleeve assembly according to claim 1, wherein the end face, provided with the connecting screw hole (203), of the process disc (2) is machined to be 0.2mm to serve as a machining positioning reference surface.

5. The expansion sleeve assembly machining tool according to claim 1, wherein the positioning sleeve (3) is arranged in a rear counter bore of the expansion sleeve (5), and the height of the positioning sleeve (3) is larger than the depth of the rear counter bore of the expansion sleeve (5).