CN218964064U - Half-and-half part turning, positioning and fastening system - Google Patents

Abstract

The utility model discloses a half-and-half part turning, positioning and fastening system which comprises a mandrel, wherein the mandrel comprises a datum seat, a workpiece seat and a central shaft which are sequentially arranged, a workpiece mounting table is arranged at the end, close to the workpiece seat, of the datum seat, workpieces are mounted on the workpiece seat and the workpiece mounting table, a pressing module is arranged on the central shaft, the workpiece is pressed on the workpiece mounting table by the pressing module, an axial positioning module is arranged between the workpiece and the workpiece mounting table, and a radial positioning module is arranged between the axial positioning module and the datum seat. The utility model uniformly positions, installs, aligns and compresses the two parts of the half-structure part, reduces the deformation of the part in the processing process and ensures the processing state of the two half parts to be consistent.

Description

Half-and-half part turning, positioning and fastening system

Technical Field

The utility model relates to a machining tool, in particular to a half part turning, positioning and fastening system.

Background

In the buffer strut of the landing gear of the aircraft, a common supporting shaft sleeve is generally made of copper or nylon with better wear resistance and self-wetting performance. In order to ensure the installation, the parts are generally of a half-and-half structure, namely the cylindrical rotary part is divided into two parts from the middle, and a gap of 0.5-1mm exists between the two half-and-half parts. The half-and-half structures are mounted in pairs during assembly. The parts are generally finished by a processing method that the whole part is firstly integrally processed and then cut through a dividing plane. Stress exists in the whole processing process of the part, and deformation is generated after cutting, so that the requirement of a product can be met only by reprocessing after the part is cut. The positioning, clamping, alignment, cutting and the like of the single cut part have difficulties, and the matching of two halves of the parts during assembly is difficult to meet the requirements, so that the two halves of the cut part are clamped and processed at one time, and the following technical difficulties are caused:

1. after the two half parts are combined, the positioning reference and the precision are ensured due to the existence of the cutting surface;

2. the matching surfaces of the two half parts have a certain gap when being cut, and the two half parts cannot be formed into a complete circle after being directly combined, so that the state of the two half parts after being processed is consistent;

3. how to ensure that the two half parts are clamped simultaneously and the clamping states are consistent.

Disclosure of Invention

Aiming at the defect of cutting and processing of a half-type structural part, the utility model provides a half-type part turning, positioning and fastening system capable of realizing one-time clamping, positioning and processing of the half-type structural part.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a half part turning location fastening system, includes the dabber, the dabber is including benchmark seat, work piece seat and the center pin that sets gradually, the nearly work piece seat end of benchmark seat sets up the work piece mount pad, the work piece seat with install the work piece on the work piece mount pad, arrange on the center pin and compress tightly the module, compress tightly the module will the work piece compresses tightly on the work piece mount pad, just the work piece with set up axial positioning module between the work piece mount pad, axial positioning module with set up radial positioning module between the benchmark seat.

According to the utility model, the mandrel with the reference seat, the workpiece seat and the central shaft is designed, the workpiece with the half-and-half structure can be clamped and fixed on the mandrel at one time by utilizing the compression module, meanwhile, the axial positioning module is utilized to axially position the workpiece, and the radial positioning module is utilized to radially position the workpiece, so that the combination and the integral fixation of the two parts of the part with the half-and-half structure can be realized, and the outer circle can be turned.

Preferably, the axial positioning module comprises a plurality of positioning grooves arranged on the outer circular surface of the reference seat, a first positioning hole arranged on the workpiece opposite to the positioning grooves, and a fixing pin inserted into the positioning grooves and the first positioning holes, wherein the positioning grooves and the first positioning holes are respectively arranged along the axial direction of the central shaft.

Preferably, the fixing pin is a cylindrical pin or a diamond pin, and the cylindrical pin and the diamond pin are staggered.

Preferably, the radial positioning module comprises a plurality of second positioning holes arranged on the reference seat and positioning pieces inserted into the second positioning holes, the second positioning holes are arranged along the radial direction of the reference seat, the positioning grooves are communicated with the second positioning holes, and the positioning pieces penetrate through the tail parts of the fixing pins and are fixed in the second positioning holes.

Preferably, the positioning piece is a movable joint bolt, a first nut is embedded and installed at the bottom of the second positioning hole, and the lower end of the movable joint bolt penetrates through the fixing pin and is then locked on the first nut.

Preferably, the second positioning hole is a waist-shaped hole.

Preferably, the pressing module comprises a pressing plate and a second nut, and the second nut is in threaded connection with the central shaft, so that the pressing plate is pressed on the outer end of the workpiece.

Preferably, the outer diameter of the reference seat is larger than the outer diameter of the workpiece seat.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model uniformly positions, installs, aligns and compresses the two parts of the half-structure part, reduces the deformation of the part in the processing process and ensures the processing state of the two half parts to be consistent.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a half part turning locating and fastening system of the present utility model.

Fig. 2 is a cross-sectional view of fig. 1.

Fig. 3 is a front view of the mandrel of the present utility model.

Fig. 4 is a right side view of the mandrel.

In the figure: 1. a mandrel; 11. a reference base; 12. a workpiece seat; 13. a central shaft; 14. a workpiece mounting table; 15. a positioning groove; 16. a second positioning hole;

21. a cylindrical pin; 22. diamond pins;

3. a positioning piece;

4. a compaction module; 41. a pressing plate; 42. a second nut;

5. a workpiece; 51. a first positioning hole;

6. a flat gasket; 7. a first nut; 8. and (5) aligning the reference.

Detailed Description

The utility model is further described below in connection with specific preferred embodiments, but it is not intended to limit the scope of the utility model.

For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described according to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.

As shown in fig. 1-4, an embodiment of the fastening system for turning and positioning a half-type part according to the present utility model includes a mandrel 1, where the mandrel 1 includes a reference seat 11, a workpiece seat 12, and a central shaft 13, which are sequentially disposed, the outer diameter of the reference seat 11 is greater than the outer diameter of the workpiece seat 12, so that a workpiece mounting table 14 is disposed at a near workpiece seat end of the reference seat 11, workpieces 5 are mounted on the workpiece seat 12 and the workpiece mounting table 14, a pressing module 4 is disposed on the central shaft 13, the workpiece 5 is pressed on the workpiece mounting table 14 by the pressing module 4, an axial positioning module is disposed between the workpiece 5 and the workpiece mounting table 14, and a radial positioning module is disposed between the axial positioning module and the reference seat.

The axial positioning module comprises four positioning grooves 15 arranged on the outer circular surface of the reference seat 11, a first positioning hole 51 arranged on the workpiece 5 opposite to the positioning grooves 15, and a fixing pin inserted into the positioning grooves 15 and the first positioning hole 51, wherein the positioning grooves 15 and the first positioning hole 51 are respectively arranged along the axial direction of the central shaft 13. The fixing pin is a cylindrical pin 21 or a diamond pin 22, and the cylindrical pin 21 and the diamond pin 22 are staggered.

The radial positioning module comprises four second positioning holes 16 arranged on the reference seat 11 and positioning pieces 3 inserted into the second positioning holes 16, the second positioning holes 16 are arranged along the radial direction of the reference seat 11, the positioning grooves 15 are communicated with the second positioning holes 16, and the positioning pieces 3 penetrate through the tail parts of the fixing pins 2 and are fixed in the second positioning holes 16. Preferably, the positioning piece 3 is a movable joint bolt, the bottom of the second positioning hole 16 is embedded with a first nut 7, and the lower end of the movable joint bolt passes through the fixing pin and is then locked on the first nut 7. The second positioning hole 16 is preferably a waist-shaped hole.

The pressing module 4 comprises a pressing plate 41 and a second nut 42, wherein the second nut 42 is in threaded connection with the central shaft 13, and presses the pressing plate 41 to the outer end of the workpiece 5.

When the utility model is used, the specific operation steps of installation, compaction and alignment before the processing of the half-and-half structure parts are as follows:

1. the inner diameter of the workpiece 5 and the outer cylindrical surface of the workpiece seat 12 attached to the mandrel 1 are rotated, the workpiece 5 is rotated, the first positioning hole 51 rotated to the workpiece 5 is coaxial with the positioning groove 15 on the reference seat 11, and the mounting hole positions of the cylindrical pin 21 and the diamond pin 22 are determined.

The outer cylindrical surface of the workpiece seat 12 is consistent with the diameter of the whole circular inner hole of the workpiece 5, and the workpiece 5 is attached to the outer cylindrical surface of the workpiece seat 12, so that the two halves of the parts can be combined into a whole, and the consistency of the positioning references of the two halves of the parts is ensured.

2. One end of the cylindrical pin 21 and the diamond pin 22 is inserted into the first positioning hole 51 of the workpiece 5, and the other end is inserted into the positioning groove 15 on the reference base 11.

Each workpiece 5 is inserted with a cylindrical pin 21 and a diamond pin 22, respectively. The cylindrical pins 21 and the diamond pins 22 are matched to eliminate over-positioning caused by the combined use of the two cylindrical pins. The workpiece 5 is positioned by the outer cylindrical surface of the workpiece seat 12 of the mandrel.

3. The positioning piece 3 is inserted into the diamond-shaped pin 22 and the cylindrical pin 21, passes through the diamond-shaped pin 22, the cylindrical pin 21 and the flat washer 6, and is in threaded connection with the first nut 7.

4. Applying an axial force to the pressing plate 41 by tightening the second nut 42, pressing the outer end face of the workpiece 5; and (5) screwing the positioning piece 3 by adopting a spanner, thus completing the clamping of the part. In the process, after the pressing plate 41 is pressed, the parallelism of the two end surfaces of the workpiece 5 and the fitting of the inner hole of the workpiece 5 and the workpiece seat 12 can be ensured, the positioning accuracy of the workpiece 5 can be ensured, and the opening of the workpiece 5 can be prevented; and finally, the positioning piece 3 is screwed down, so that the installation reliability of the parts is ensured.

5. The utility model with the workpiece 5 is clamped on a lathe, and the lathe spindle is rotated to align the excircle of the reference seat 11 of the mandrel 1. And finally, the clamping and alignment of the parts are completed.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims (8)

1. The utility model provides a half part turning location fastening system, includes dabber, its characterized in that:

the mandrel comprises a datum seat, a workpiece seat and a central shaft which are sequentially arranged, a workpiece mounting table is arranged at the end, close to the workpiece seat, of the datum seat, a workpiece is mounted on the workpiece mounting table, a pressing module is arranged on the central shaft, the workpiece is pressed on the workpiece mounting table by the pressing module, an axial positioning module is arranged between the workpiece and the workpiece mounting table, and a radial positioning module is arranged between the axial positioning module and the datum seat.

2. The half part turning positioning and fastening system according to claim 1, wherein the axial positioning module includes a plurality of positioning grooves arranged on an outer circumferential surface of the reference seat, a first positioning hole arranged opposite to the positioning grooves on the workpiece, and a fixing pin inserted into the positioning grooves and the first positioning hole, the positioning grooves and the first positioning hole being respectively provided in an axial direction of the central shaft.

3. The half part turning locating fastening system of claim 2, wherein the securing pins are cylindrical pins or diamond pins and the cylindrical pins and the diamond pins are staggered.

4. The half part turning positioning and fastening system according to claim 2, wherein the radial positioning module includes a plurality of second positioning holes arranged on the reference seat and a positioning piece inserted into the second positioning holes, and the second positioning holes are arranged along a radial direction of the reference seat, the positioning groove communicates with the second positioning holes, and the positioning piece passes through a tail portion of the fixing pin and is fixed in the second positioning holes.

5. The positioning and fastening system for turning half parts according to claim 4, wherein the positioning member is a swing bolt, a first nut is embedded in the bottom of the second positioning hole, and the lower end of the swing bolt is locked on the first nut after passing through the fixing pin.

6. The half part turning locating fastening system of claim 4, wherein the second locating hole is a kidney hole.

7. The half part turning locating fastening system of claim 1, wherein the compression module comprises a compression plate and a second nut that is threadably coupled to the central shaft such that the compression plate compresses against an outer end of the workpiece.

8. The half part turning locating fastening system of claim 1, wherein an outer diameter of the datum seat is greater than an outer diameter of the workpiece seat.

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