CN113732114A

CN113732114A - Large-diameter thin-wall circular ring expansion tool and using method thereof

Info

Publication number: CN113732114A
Application number: CN202111148422.XA
Authority: CN
Inventors: 喻萍; 徐盛福; 丁洵; 左晓川
Original assignee: Jiangnan Industries Group Co Ltd
Current assignee: Jiangnan Industries Group Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2021-12-03

Abstract

The invention discloses a large-diameter thin-wall circular ring expanding tool; the circular ring fixing component comprises a fixed base, a lantern ring and an expansion spring, the lantern ring is arranged on the fixed base, the expansion spring is fixedly arranged on the lantern ring, the expansion spring and the lantern ring have the same axle center, the withdrawing piece is sleeved and connected on the outer wall of the expansion spring in a sliding way, the circular ring expanding component comprises a positioning sleeve, a core shaft and an expansion plate, the positioning sleeve is fixedly arranged on the fixed base, the tool is coaxial with the lantern ring, the mandrel is screwed in a central threaded hole of the positioning sleeve, the mandrel is provided with the expansion plate, the pressing plate body is detachably arranged on the upper surface of the expansion spring, and the large-diameter thin-wall ring with serious deformation is corrected into an expanded circle by utilizing the expansion sleeve principle, so that the whole tool is simple in structure, convenient and easy to operate, beneficial to improving the working efficiency and the working quality, and reduce because of warping the later stage assembly degree of difficulty that leads to the size to reduce and cause for the major diameter thin wall ring after the processing satisfies the design size requirement, has avoided the problem that the installation back easily drops or easily blocks.

Description

Large-diameter thin-wall circular ring expansion tool and using method thereof

Technical Field

The invention relates to the technical field of process tools, in particular to a large-diameter thin-wall circular ring bulging tool and a using method thereof.

Background

The circular ring-shaped part often plays roles of positioning, pressing or tightening and the like in some circular revolving body products, but the circular ring-shaped part is easy to deform after being processed, particularly a large-diameter thin-wall ring, and subsequent assembly is influenced due to serious deformation after being processed, so that the processed large-diameter thin-wall ring needs to be subjected to bulging and circle correction before being assembled, namely, better roundness is kept so as to facilitate assembly.

Disclosure of Invention

The invention provides a large-diameter thin-wall circular ring expansion tool and a using method thereof, and aims to solve the technical problem that subsequent assembly is influenced due to serious deformation after processing of a large-diameter thin-wall circular ring.

The technical scheme of the invention is as follows: a large-diameter thin-wall circular ring expanding tool comprises a circular ring fixing assembly, a withdrawing ring, a circular expanding assembly and a pressing plate body;

the circular ring fixing component comprises a fixing base, a lantern ring and an expansion spring, the lantern ring is arranged on the fixing base, the expansion spring is fixedly arranged on the lantern ring, the expansion spring and the lantern ring have the same axle center, the withdrawing piece is sleeved on and slidably connected to the outer wall of the expansion spring,

the circle expanding assembly comprises a positioning sleeve, a mandrel and an expanding plate, the positioning sleeve is fixedly arranged on the fixed base and has the same axis as the lantern ring, the mandrel is screwed in a central threaded hole of the positioning sleeve, the expanding plate is arranged on the mandrel and is symmetrical about the center of the mandrel, and the pressing plate body is detachably arranged on the upper surface of the expanding spring.

As a further improvement of the above technical solution:

preferably, handles are arranged on the two sides of the withdrawing ring and the pressing plate body.

Preferably, the expansion plate further comprises an auxiliary wrench assembly, the auxiliary wrench assembly is used for rotating the expansion plate, the auxiliary wrench assembly comprises a wrench body and a wrench pin, and the wrench pin is arranged on the lower surface of the wrench body.

Preferably, the number of the wrench pins is double, and the wrench pins are symmetrical about the center of the wrench body.

Preferably, the expansion plate is provided with an auxiliary hole matched with the wrench pin.

Preferably, the locating sleeve is installed in a lower center stepped hole of the fixed base and is fixed by a pin.

A use method of a large-diameter thin-wall circular ring expanding tool comprises the following steps:

step1, fixing the fixed base on the workbench, slightly closing an opening at the upper end of the expansion spring, sleeving a withdrawing ring into the outer diameter of the expansion spring, contacting the withdrawing ring with the upper surface of the lantern ring, and sleeving a ring at the upper end of the opening of the expansion spring;

step2, manually screwing the lower end of the mandrel into the internal thread of the positioning sleeve, inserting a wrench pin on a wrench body into an auxiliary hole of the expansion plate, wrenching the wrench body to drive the mandrel to rotate in the positioning sleeve, so that the expansion plate rotates downwards, and when an outer cone of the expansion plate begins to be pressed into an inner cone of the expansion spring, the expansion spring expands radially, and the ring expands outwards;

step3, taking down the wrench body, sleeving the pressure plate body on the circular ring through the second handle, standing for 2 hours;

step4, taking down the pressing plate body through the second handle, inserting a wrench pin on the wrench body into an auxiliary hole of the expansion plate, reversely wrenching the wrench body, and taking out the expansion plate;

step5, holding the first handle 11 and lifting the object to take out the ring which has finished the bulging and circle correcting.

Compared with the prior art, the invention has the following beneficial effects:

1. compared with the prior art, the invention utilizes the expansion sleeve principle to correct the shape and the expansion circle of the large-diameter thin-wall ring with serious deformation, has simple structure, convenient and easy operation, is beneficial to improving the working efficiency and the working quality, reduces the later assembly difficulty caused by the size reduction caused by the deformation, ensures that the processed large-diameter thin-wall ring meets the design size requirement, and avoids the problem of easy falling or clamping after installation.

2. Be equipped with and move back a ring, avoided the problem that is difficult to take out after the correction to supplementary spanner subassembly makes things convenient for the manual operation among the operation process.

Drawings

FIG. 1 is a schematic view of a three-dimensional (no rings) structure of the present invention;

FIG. 2 is a front view cross-sectional structural schematic of the present invention;

FIG. 3 is a schematic perspective view of the collar and the expanding spring of the present invention;

FIG. 4 is a front view cross-sectional structural schematic view of the inflation assembly (without a retaining sleeve) of the present invention;

fig. 5 is a perspective view of the auxiliary wrench assembly of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "up", "down", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated by the terms must have specific orientations, be constructed and operated in specific orientations, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1 and 5, the present invention provides the following technical solutions: a large-diameter thin-wall circular ring expanding tool comprises a fixed base 1, a lantern ring 2, an expanding spring 3, a withdrawing ring 4, a positioning sleeve 5, a mandrel 6, an expanding plate 7, a pressing plate body 8, a wrench body 9 and a wrench pin 10;

a lantern ring 2 is arranged on the fixed base 1, an expansion spring 3 is fixedly arranged on the lantern ring 2, the expansion spring 3 and the lantern ring 2 are coaxial, a withdrawing ring 4 is sleeved on and slidably connected to the outer wall of the expansion spring 3, and first handles 11 are arranged on two sides of the withdrawing ring 4;

the positioning sleeve 5 is arranged in a central step hole below the fixed base 1 and is fixed by a pin, the positioning sleeve and the lantern ring 2 have the same axle center, the mandrel 6 is screwed in a central threaded hole of the positioning sleeve 5, the mandrel 6 is provided with an expansion plate 7, and the expansion plate 7 is centrosymmetric with respect to the mandrel 6;

the pressing plate body 8 is detachably arranged on the upper surface of the expanding spring 3, and second handles 12 are arranged on two sides of the pressing plate body 8;

the lower surface of the wrench body 9 is provided with 2 wrench pins 10, the 2 wrench pins 10 are symmetrical about the center of the wrench body 9, and the expansion plate 7 is provided with an auxiliary hole 13 matched with the wrench pin 10.

The working process of the invention is as follows:

the fixed base 1 is fixed on a workbench, an opening at the upper end of the expansion spring 3 is slightly closed, the withdrawing ring 4 is sleeved into the outer diameter of the expansion spring 3 and is contacted with the upper surface of the lantern ring 2, and then the circular ring 14 is sleeved at the upper end of the opening of the expansion spring 3;

firstly, manually screwing the lower end of the mandrel 6 into the internal thread of the positioning sleeve 5, then inserting a wrench pin 10 on a wrench body 9 into an auxiliary hole 13 of the expansion plate 7, wrenching the wrench body 9 to drive the mandrel 6 to rotate in the positioning sleeve 5, so that the expansion plate 7 rotates downwards, and when an external cone of the expansion plate 7 starts to be pressed into an internal cone of the expansion spring 3, the expansion spring 3 expands radially, and the ring 14 expands outwards;

taking down the wrench body 9, sleeving the pressing plate body 8 on the circular ring 14 through the second handle 12, standing for 2 hours, taking down the pressing plate body 8 through the second handle 12, inserting the wrench pin 10 on the wrench body 9 into the auxiliary hole 13 of the expansion plate 7, reversely wrenching the wrench body 9, and taking out the expansion plate 7; the first handle 11 is held to lift the part body to take out the circular ring 14 which completes the bulging and circle correcting, the whole process is simple to operate, and the clamping and the dismounting are convenient and rapid.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a major diameter thin wall ring instrument of expanding circle which characterized in that: comprises a circular ring fixing component, a withdrawing ring, a circular expansion component and a pressing plate body;

2. The large-diameter thin-walled circular ring bulging tool according to claim 1, wherein: and handles are arranged on the two sides of the withdrawing ring and the pressing plate body.

3. The large-diameter thin-walled circular ring bulging tool according to claim 1, wherein: the auxiliary wrench assembly is used for rotating the expansion plate and comprises a wrench body and a wrench pin, and the wrench pin is arranged on the lower surface of the wrench body.

4. A large diameter thin walled circular ring expansion tool as claimed in claim 3 wherein: the number of the wrench pins is double, and the wrench pins are symmetrical about the center of the wrench body.

5. The large-diameter thin-walled circular ring bulging tool according to claim 4, wherein: and the expansion plate is provided with an auxiliary hole matched with the wrench pin.

6. The large-diameter thin-walled circular ring bulging tool according to claim 1, wherein: the locating sleeve is arranged in a central step hole below the fixed base and is fixed by a pin.

7. A method for using a large diameter thin wall annular expansion tool according to any of claims 1-6, comprising the steps of:

step5, holding the first handle and lifting the piece body to take out the ring which has finished the bulging and circle correcting.