Synchronous expanding tool

Abstract

The utility model provides a synchronous expanding tool which aims at solving the technical problem that in the clamping process, correction cannot be conducted, and machining deformation can be caused. The tool comprises a base, the top of which is provided with an annular positioning part; one end of the supporting rod is vertically arranged at the top of the positioning part; the supporting plate is of a circular structure and is arranged at the other end of the supporting rod, and the supporting plate and the positioning part are coaxially arranged; the expansion blocks are annularly and uniformly distributed at the top of the supporting plate; one end of the connecting rod is arranged on the expansion block, and the other end is provided with a driving surface which is located in the middle of the supporting plate; the supporting pipe is coaxially arranged on the top face of the supporting plate, and a plurality of through holes allowing the ends of the connecting rods to penetrate through are formed in the supporting pipe; the expansion rod is arranged in the middle of the supporting rod, the middle of the expansion rod is provided with a cone-shaped expansion cone structure, and the side face of the expansion cone structure makes contact with the driving face. The tool has the advantages that deformation of mechanical parts can be corrected, and meanwhile machining deformation generated after clamping is avoided.

Description

Technical Field

[0001] The utility model relates to a clamp tool, in particular to a synchronous expansion tool. Background Art

[0002] The aircraft engine casing is the core part of the aircraft engine. As the base of the entire engine, it has typical characteristics such as complex shape, thin wall, difficult material processing and high dimensional accuracy. The material removal rate during processing reaches more than 60%. Therefore, improving the processing quality and efficiency of the casing is of great significance to ensure the quality and development of aircraft engines.

[0003] The receiver is a typical thin-walled part with a relatively thin wall thickness, which makes it very easy to be deformed by the clamping force, cutting force and other factors during the processing. In the process of clamping receiver parts, traditional tooling is affected by the clamping layout and clamping sequence, and cannot correct the deformation of receiver parts, which will affect the stability of receiver parts during the processing and cause processing deformation of receiver parts. Utility Model Content

[0004] In view of the technical problem that the deformation of the receiver parts cannot be corrected during the clamping process and processing deformation may occur, the utility model provides a synchronous expansion tooling, which has the advantage of being able to correct the deformation of mechanical parts and avoid processing deformation after clamping.

[0005] The technical solution of the utility model is:

[0006] A synchronous expansion tool, comprising:

[0007] A base having a ring-shaped positioning portion on the top;

[0008] A support rod, one end of which is vertically arranged on the top of the positioning portion;

[0009] A support plate, which is a circular structure, is arranged on the other end of the support rod, and the support plate is coaxially arranged with the positioning portion;

[0010] A plurality of expansion blocks, which are ring-shaped and evenly distributed on the top of the support plate;

[0011] A connecting rod, one end of which is arranged on the expansion block, and the other end of which has a driving surface, wherein the driving surface is located in the middle of the support plate;

[0012] A support tube, coaxially arranged on the top surface of the support plate, and having a plurality of through holes for the ends of the connecting rods to pass through;

[0013] The expansion rod is arranged in the middle of the support rod. The middle of the expansion rod has a truncated cone-shaped expansion cone structure, and the side surface of the expansion cone structure contacts the driving surface.

[0014] Optionally, a threaded hole is provided in the middle of the support plate, and one end of the expansion rod has a thread matching the threaded hole.

[0015] Optionally, the diameter of one end of the expansion rod having a thread is smaller than the diameter of the other end thereof.

[0016] Optionally, a limiting plate is provided on one end of the supporting tube away from the supporting plate, and a movable hole is provided in the middle of the limiting plate for the expansion rod to pass through.

[0017] Optionally, the outer circumference of the support tube has a plurality of through holes, the through holes are strip-shaped structures, a T-shaped plate is slidably arranged in each through hole, one end of the T-shaped plate located in the support tube has the driving surface, and the connecting rod is arranged on the T-shaped plate.

[0018] Optionally, at least two connecting rods are provided between the T-shaped plate and the expansion block, and a side of the expansion block away from the connecting rods is an arc-shaped surface.

[0019] Optionally, a plurality of tracks corresponding to all the expansion blocks are provided on the top surface of the support plate, the tracks are arranged along the radial direction of the support plate, and the expansion blocks are slidably arranged on the tracks.

[0020] Optionally, a sliding block matching the track is provided at the bottom of the expansion block.

[0021] Optionally, the middle portion of the base is a hollow structure, and the support plate has a plurality of weight-reducing holes.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] First, install the receiver part to be processed on the positioning part on the top of the base, and then move the expansion rod along the axial direction of the support tube in the support tube, so that the expansion cone structure on the expansion rod and the driving surface on the connecting rod interact with each other, so that the connecting rod pushes the expansion block to move radially along the support plate, so that all the expansion blocks apply pressure to the inner wall of the receiver part at the same speed and force, thereby tightening and clamping the receiver part.

[0024] In the technical solution, the magnitude of the force applied by all the expansion blocks to the inner wall of the receiver part is the same, so the deformation of the receiver part can be corrected and the processing deformation of the receiver part can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0028] Figure 3 It is a three-dimensional structural schematic diagram of the utility model in a clamping state;

[0029] Figure 4 It is a schematic diagram of the top view of the clamping and filling structure of the utility model. DETAILED DESCRIPTION

[0030] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present invention are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0033] Example:

[0034] See also Figure 1-Figure 4A synchronous expansion tooling includes a base 1, a support rod 2, a support plate 3, an expansion block 4, a connecting rod 5, a support tube 6 and an expansion rod 7. Specifically, the base 1 is circular, and a positioning portion 14 is provided on the top of the base 1. The positioning portion 14 is an annular structure and is concentric with the base 1, and the outer wall of the positioning portion 14 is used to abut against the inner wall of the receiver part 11. The diameter of the positioning portion 14 is smaller than the diameter of the base 1, so that the top surface of the base 1 can be used to support the bottom end of the receiver part 11.

[0035] A plurality of support rods 2 are arranged on the top of the positioning portion 14, one end of the support rod 2 is fixed on the positioning portion 14, and the other end of the support rod 2 is arranged in the vertical direction, and a support plate 3 is fixed on the top of all the support rods 2, the support plate 3 is circular, and the axis of the support plate 3 is collinear with the axis of the positioning portion 14.

[0036] A plurality of expansion blocks 4 are disposed on the top surface of the support plate 3 . All the expansion blocks 4 are distributed in a ring shape, and the axis of the ring structure formed by all the expansion blocks 4 is collinear with the axis of the support plate 3 .

[0037] A connecting rod 5 is provided on one side of the expansion block 4 close to the middle of the support plate 3, and the connecting rod 5 is provided along the radial direction of the support plate 3. One end of the connecting rod 5 away from the expansion block 4 is close to the middle of the support plate 3, and a driving surface is provided on this end of the connecting rod 5, and the driving surface is an inclined surface structure. Each expansion block 4 is provided with a connecting rod 5, and the driving surfaces on all the connecting rods 5 are distributed in a ring shape.

[0038] One end of the support tube 6 is fixedly connected to the middle of the support plate 3, and the other end of the support tube 6 is extended upward in the vertical direction. The axis of the support tube 6 is colinear with the axis of the support plate 3, and a plurality of through holes are provided on the outer wall of the support tube 6, and the number of through holes is equal to the number of expansion blocks 4. The side of the connecting rod 5 having the driving surface passes through the through hole and is placed in the support tube 6.

[0039] At the same time, an expansion rod 7 is also arranged in the support tube 6. The middle part of the expansion rod 7 has a truncated cone structure 8. The side surface of the expansion cone structure 8 is an inclined structure and can contact and match with all driving surfaces.

[0040] The working principle of this embodiment is that the receiver part 11 to be processed is first installed on the positioning part 14 on the top of the base 1, and then the expansion rod 7 is moved along the axial direction of the support tube 6 in the support tube 6, so that the expansion cone structure 8 on the expansion rod 7 and the driving surface on the connecting rod 5 interact with each other, so that the connecting rod 5 pushes the expansion block 4 to move radially along the support plate 3, so that all the expansion blocks 4 apply pressure to the inner wall of the receiver part 11 at the same speed and force, thereby tightening and clamping the receiver part 11.

[0041] In this embodiment, the magnitude of the force applied by all the expansion blocks 4 to the inner wall of the receiver part 11 is the same, so the deformation of the receiver part 11 can be corrected, and at the same time, the processing deformation of the receiver part 11 can be avoided.

[0042] Preferably, the middle portion of the base 1 is a hollow structure, and the support plate 3 is provided with a plurality of weight-reducing holes, so that the weight of the entire tooling can be reduced by improving the structures of the base 1 and the support plate 3 .

[0043] In one specific embodiment:

[0044] There is a threaded hole in the middle of the support plate 3, one end of the expansion rod 7 is a threaded rod, and this end of the expansion rod 7 matches the threaded hole on the support plate 3. In addition, the other end of the expansion rod 7 passes through the top end of the support rod 2, and a structure for wrench connection (such as a hexagon socket, etc.) is provided on this end of the expansion rod 7.

[0045] Preferably, the threaded end of the expansion rod 7 is arranged on the end of the expansion cone structure 8 with a smaller bottom diameter, and the other end of the expansion rod 7 is connected to the end of the expansion cone structure 8 with a larger bottom diameter.

[0046] In this embodiment, by providing a thread matching structure between the support plate 3 and the expansion rod 7 , the position of the expansion block 4 can be adjusted by rotating the expansion rod 7 .

[0047] In another specific embodiment:

[0048] A circular stop plate 9 is provided at the top of the support tube 6, and a movable hole is provided in the middle of the stop plate 9, through which the expansion block 4 passes. In this embodiment, by providing the stop plate 9, the expansion block 4 can be prevented from shaking.

[0049] In another specific embodiment:

[0050] The through hole on the outer wall of the support tube 6 is a strip structure. A T-shaped block 10 is arranged on the end of the connecting rod 5 away from the expansion block 4. The T-shaped block 10 passes through the through hole of the strip structure, and the above-mentioned driving surface is arranged on the end of the T-shaped block 10.

[0051] In this embodiment, by providing the T-shaped block 10 and arranging the driving surface at the end of the T-shaped block 10 , the stability of the expansion block 4 during movement can be enhanced.

[0052] Preferably, at least two connecting rods 5 are provided between the T-shaped block 10 and the expansion block 4, and the side of the expansion block 4 away from the connecting rods 5 is an arc-shaped surface. By providing multiple connecting rods 5, the stability between the T-shaped block 10 and the expansion block 4 is improved, and the outer side surface of the expansion block 4 is provided as an arc-shaped structure, which can avoid the problem of deformation of the casing part 11 after contacting the corner on the expansion block 4.

[0053] In another specific embodiment:

[0054] A plurality of tracks 12 are arranged on the top surface of the support plate 3, and the length direction of the tracks 12 is the same as the radius direction of the support plate 3. The number of the tracks 12 is equal to the number of the expansion blocks 4, and the two are in a one-to-one correspondence state.

[0055] A slider 13 is disposed at the bottom of each expansion block 4 , and the slider 13 is slidably disposed on the track 12 .

[0056] In this embodiment, the track 12 and the slider 13 are provided to improve the smoothness of the movement of the expansion block 4 and limit the movement trajectory of the expansion block 4 .

[0057] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A synchronous expansion tooling, It is characterized in that include: A base having a ring-shaped positioning portion on the top; A support rod, one end of which is vertically arranged on the top of the positioning portion; A support plate, which is a circular structure, is arranged on the other end of the support rod, and the support plate is coaxially arranged with the positioning portion; A plurality of expansion blocks, which are ring-shaped and evenly distributed on the top of the support plate; A connecting rod, one end of which is arranged on the expansion block, and the other end of which has a driving surface, wherein the driving surface is located in the middle of the support plate; A support tube, coaxially arranged on the top surface of the support plate, and having a plurality of through holes for the ends of the connecting rods to pass through; The expansion rod is arranged in the middle of the support rod. The middle of the expansion rod has a truncated cone-shaped expansion cone structure, and the side surface of the expansion cone structure contacts the driving surface.

2. The synchronous expansion tooling according to claim 1, It is characterized in that The support plate has a threaded hole in the middle, and one end of the expansion rod has a thread matching the threaded hole.

3. The synchronous expansion tooling according to claim 2, It is characterized in that The diameter of one end of the expansion rod having a thread is smaller than the diameter of the other end thereof.

4. The synchronous expansion tooling according to claim 1, It is characterized in that A limiting plate is arranged on one end of the supporting tube away from the supporting plate, and a movable hole is arranged in the middle of the limiting plate for the expansion rod to pass through.

5. The synchronous expansion tooling according to claim 4, It is characterized in that The outer circumference of the support tube is provided with a plurality of through holes, the through holes are strip-shaped structures, a T-shaped plate is slidably arranged in each through hole, one end of the T-shaped plate located in the support tube has the driving surface, and the connecting rod is arranged on the T-shaped plate.

6. The synchronous expansion tooling according to claim 5, It is characterized in that At least two connecting rods are arranged between the T-shaped plate and the expansion block, and a side of the expansion block away from the connecting rods is an arc-shaped surface.

7. The synchronous expansion tooling according to any one of claims 1 to 6, It is characterized in that The top surface of the support plate is provided with a plurality of tracks corresponding to all the expansion blocks one by one, the tracks are arranged along the radial direction of the support plate, and the expansion blocks are slidably arranged on the tracks.

8. The synchronous expansion tooling according to claim 7, It is characterized in that A sliding block matching the track is provided at the bottom of the expansion block.

9. The synchronous expansion tooling according to claim 1, It is characterized in that The middle part of the base is a hollow structure, and the support plate is provided with a plurality of weight-reducing holes.

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