CN219275117U

CN219275117U - Positioning device of cantilever bearing box

Info

Publication number: CN219275117U
Application number: CN202223481394.6U
Authority: CN
Inventors: 陈显瑜; 叶东
Original assignee: EIFEL PUMP (FUZHOU) CO LTD
Current assignee: EIFEL PUMP (FUZHOU) CO LTD
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-06-30
Anticipated expiration: 2032-12-23

Abstract

The utility model discloses a positioning device of a cantilever bearing box, which belongs to the technical field of tooling positioning components and comprises a power shaft, a supporting shaft and an expansion sleeve which are sequentially sleeved from inside to outside; the support shaft comprises a cylindrical section and a circular table section; the cylindrical section is connected with the small head end of the circular table section; the expansion sleeve comprises an inner sleeve and an outer sleeve; the inner sleeve is connected with the cylindrical section in a sliding way, and one end far away from the circular table section is clamped with the power shaft; the outer sleeve is simultaneously connected with the inner sleeve and the round platform section in a sliding manner; when a workpiece is required to be positioned, the power shaft drives the inner sleeve and the outer sleeve to move towards the circular table section, and the outer sleeve can be gradually expanded outwards along the radial direction in the moving process through the shaft diameter change of the circular table section until the outer sleeve is completely attached to the inner wall of the workpiece, so that the rapid alignment and positioning work is realized; the problem that further deviation correcting work needs to be carried out manually after positioning, and alignment precision and production efficiency are low is effectively solved.

Description

Positioning device of cantilever bearing box

Technical Field

The utility model belongs to the technical field of tooling positioning components, and particularly relates to a positioning device of a cantilever bearing box.

Background

The coaxiality of a plurality of bearing positions and flange positions is usually ensured to meet the drawing requirement in the processing of the cantilever bearing box, so that the flange positions and the bearing positions of a workpiece are manually corrected in the processing, and then the bearing positions at the other end are processed by using the flange position positioning upper clamp, so that the processing precision of the workpiece is ensured.

However, manual correction of workpieces is time-consuming and labor-consuming, and the cantilever bearing box still has larger errors after the secondary clamping machining precision, so that the product quality is influenced, and the production efficiency is greatly influenced. Therefore, a positioning device capable of rapidly aligning and positioning and enabling coaxiality of a machined bearing position and a flange position to meet requirements without repeated clamping needs to be designed.

Disclosure of Invention

In order to overcome the defects in the prior art, the technical problems to be solved by the utility model are as follows: how to provide a positioning device which can be rapidly aligned and positioned, and can enable the coaxiality of a machined bearing position and a flange position to meet the requirement without repeated clamping.

In order to solve the technical problems, the utility model adopts the following technical scheme: a positioning device of a cantilever bearing box comprises a power shaft, a supporting shaft and an expansion sleeve which are sequentially sleeved from inside to outside; the support shaft comprises a cylindrical section and a circular table section; the cylindrical section is connected with the small head end of the circular table section; the expansion sleeve comprises an inner sleeve and an outer sleeve; the inner sleeve is in sliding connection with the cylindrical section, and one end far away from the circular table section is clamped with the power shaft; the outer sleeve is simultaneously connected with the inner sleeve and the round platform section in a sliding manner.

Wherein the cylindrical section and the round platform section are coaxially arranged.

Wherein, the utility model also comprises a fixed disc; the fixed disc is coaxially connected with the supporting shaft.

Wherein, the power shaft is equipped with the screw thread on being located the outer periphery of fixed disc.

The inner sleeve comprises a cylindrical sleeve and a taper sleeve which are coaxially connected; one end of the cylindrical sleeve is connected with the small end of the taper sleeve; the other end of the cylinder sleeve is arranged towards the circular table section; the inclination angle of the taper sleeve is consistent with the inclination angle of the round platform section.

Wherein the outer jacket comprises at least two expansion sheet jackets; the expansion sheet is sleeved into a cylindrical structure; the inner side walls of the expansion sheet sleeves close to the two ends are provided with inclined planes with the inclination degree consistent with that of the taper sleeves; one inclined plane is in sliding connection with the round platform section, and the other inclined plane is in sliding connection with the taper sleeve.

Wherein, the periphery of expansion sheet cover cup joints elastic element.

The utility model has the beneficial effects that: the positioning device of the cantilever bearing box has the advantages that the structure is simple, the use is convenient, when a workpiece is required to be positioned, the power shaft drives the inner sleeve and the outer sleeve to move towards the circular platform section, and the outer sleeve can gradually expand outwards along the radial direction in the moving process through the shaft diameter change of the circular platform section until the outer sleeve is completely attached to the inner wall of the workpiece, so that the rapid alignment and positioning work is realized.

Drawings

FIG. 1 is a schematic view of a positioning device for a cantilever bearing housing according to an embodiment of the present utility model;

FIG. 2 is a front cross-sectional view of a positioning device for a cantilever bearing housing in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic view showing the structure of a supporting shaft and a fixed disk according to an embodiment of the present utility model;

FIG. 4 is a schematic view showing the structure of an inner sleeve according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the structure of the jacket according to the embodiment of the present utility model;

FIG. 6 is a front view of a cantilever bearing housing positioning apparatus (positioning the cantilever bearing housing in place) according to an embodiment of the present utility model;

description of the reference numerals:

1. a power shaft; 11. a thread;

2. a support shaft; 21. a cylindrical section; 22. a circular table section;

3. an expansion sleeve; 31. an inner sleeve; 311. a cylindrical sleeve; 312. a taper sleeve; 32. a jacket; 321. an expansion sheet sleeve; 322. an inclined plane;

4. a fixed disc; 5. an elastic element;

6. a cantilever bearing housing; 61. a bearing position; 62. a flange position;

7. clamping jaw.

Detailed Description

In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.

The most critical concept of the utility model is as follows: through the cooperation between power shaft, back shaft and the expansion shell, make the power shaft can drive the expansion shell along radial expansion at the in-process that removes to realize the quick alignment location to the bearing box.

Referring to fig. 1 to 6, the positioning device of a cantilever bearing housing provided by the utility model comprises a power shaft 1, a support shaft 2 and an expansion sleeve 3 which are sequentially sleeved from inside to outside; the support shaft 2 comprises a cylindrical section 21 and a round table section 22; the cylindrical section 21 is connected with the small end of the round table section 22; the expansion shell 3 comprises an inner shell 31 and an outer shell 32; the inner sleeve 31 is in sliding connection with the cylindrical section 21, and one end far away from the circular table section 22 is clamped with the power shaft 1; the outer sleeve 32 is simultaneously slidably connected to the inner sleeve 31 and the circular segment 22.

From the above description, the beneficial effects of the utility model are as follows: when a workpiece is required to be positioned, the power shaft 1 drives the inner sleeve 31 and the outer sleeve 32 to move towards the circular table section 22, and the outer sleeve 32 can gradually expand outwards along the radial direction in the moving process through the shaft diameter change of the circular table section 22 until the outer sleeve 32 is completely attached to the inner wall of the workpiece, so that the rapid alignment and positioning work is realized; the device simple structure, convenient operation need not to carry out further work of rectifying through the manual work after the location, have also improved production efficiency when having guaranteed the precision.

Further, the cylindrical section 21 and the truncated cone section 22 are coaxially arranged.

From the above description, the design makes the expansion sleeve 3 uniformly stressed in the radial expansion process, ensures that the expansion sleeve 3 can be simultaneously contacted with the inner wall of the workpiece, and improves the alignment precision.

Further, the positioning device of the cantilever bearing box further comprises a fixed disc 4; the fixed disk 4 is coaxially connected with the support shaft 2.

From the above description, it is known that this design can increase the effective contact area of other devices supporting the shaft 2, thereby facilitating the fixing work of the supporting shaft 2.

Further, the power shaft 1 is provided with threads 11 on the circumferential surface located outside the fixed disk 4.

From the above description, it is clear that this design facilitates the connection of the power shaft 1 with the equipment providing axial traction, thus providing a basic guarantee for the alignment and positioning work.

Further, the inner sleeve 31 includes a cylindrical sleeve 311 and a conical sleeve 312 coaxially connected; one end of the cylinder sleeve 311 is connected with the small end of the taper sleeve 312; the other end of the cylinder sleeve 311 is arranged towards the cylinder section 22; the angle of inclination of the cone sleeve 312 is consistent with the angle of inclination of the circular truncated cone segment 22.

As can be seen from the above description, the inclination angle of the taper sleeve 312 is consistent with the inclination angle of the round table section 22, so that the expansion sleeve 3 always maintains a columnar structure in the outward expansion process, thereby further ensuring that the expansion sleeve 3 can fully contact with the inner wall of the workpiece, and further improving the alignment positioning precision.

Further, the outer jacket 32 includes at least two expansion shells 321; the expansion sheet sleeve 321 encloses a cylindrical structure; the inner side walls of the expansion sheet sleeve 321 near the two ends are provided with inclined planes 322 with the inclination degree consistent with that of the taper sleeve 312; one bevel 322 is slidably coupled to the circular table section 22 and the other bevel 322 is slidably coupled to the cone sleeve 312.

Further, the outer periphery of the expansion sheet sleeve 321 is sleeved with an elastic element 5.

Further, the expansion sheet cover 321 has an arcuate sheet-like structure, and its length extends in the axial direction of the outer jacket 32.

From the above description, it is apparent that the outer sleeve 32 surrounded by the expansion sheet sleeve 321 can improve the flexibility of the outer sleeve 32, so that a quick response to the movement of the inner sleeve 31 can be achieved, i.e., quick alignment and positioning can be achieved; the elastic element 5 can provide radial retraction force for the expansion sheet sleeve 321 when the inner sleeve 31 is restored, so as to avoid the influence of slow retraction or blocking of the expansion sheet sleeve 321 on the withdrawal of the positioning device after alignment and positioning.

The positioning device of the cantilever bearing box can be used for alignment and positioning work of a box body structure, and is particularly suitable for alignment and positioning work of the cantilever bearing box 6.

The first embodiment of the utility model is as follows:

referring to fig. 1 to 3, a positioning device of a cantilever bearing box comprises a fixed disc 4, and a power shaft 1, a support shaft 2 and an expansion sleeve 3 which are sequentially sleeved from inside to outside; the support shaft 2 comprises a cylindrical section 21 and a round platform section 22 which are coaxially arranged; the cylindrical section 21 is connected with the small end of the round table section 22; the expansion shell 3 comprises an inner shell 31 and an outer shell 32; the inner sleeve 31 is in sliding connection with the cylindrical section 21, and one end far away from the circular table section 22 is clamped with the power shaft 1; the outer sleeve 32 is simultaneously in sliding connection with the inner sleeve 31 and the round table section 22; the fixed disc 4 is coaxially connected with the support shaft 2; the power shaft 1 is provided with threads 11 on the circumferential surface located outside the fixed disk 4.

Referring to fig. 4, the inner sleeve 31 includes a cylindrical sleeve 311 and a conical sleeve 312 coaxially connected; one end of the cylinder sleeve 311 is connected with the small end of the taper sleeve 312; the other end of the cylinder sleeve 311 is arranged towards the cylinder section 22; the angle of inclination of the cone sleeve 312 is consistent with the angle of inclination of the circular truncated cone segment 22.

Referring to fig. 5, the outer jacket 32 includes at least two expansion shells 321; the expansion sheet sleeve 321 is of an arc-shaped sheet structure, and the length thereof extends along the axial direction of the outer sleeve 32; the expansion sheet sleeve 321 encloses a cylindrical structure; the inner side walls of the expansion sheet sleeve 321 near the two ends are provided with inclined planes 322 with the inclination degree consistent with that of the taper sleeve 312; one inclined surface 322 is in sliding connection with the circular table section 22, and the other inclined surface 322 is in sliding connection with the taper sleeve 312; the periphery of the expansion sheet sleeve 321 is sleeved with an elastic element 5.

The working principle of the utility model is as follows: firstly, fixing the positioning device on any commercial power traction device through a fixed disc 4, and connecting the thread 11 of the power shaft 1 with the movable end thread 11 of the power traction device; then, sleeving the cantilever bearing box 6 which is replaced by processing with the support shaft 2 and the expansion sleeve 3; then, under the drive of the power traction device, the power shaft 1 gradually drives the inner sleeve 31 to move towards the round table section 22 along the cylindrical section 21, and as the inclined planes 322 consistent with the inclined angles of the taper sleeve 312 and the round table section 22 are arranged at the two ends of the expansion sheet sleeve 321, the expansion sheet sleeve 321 can move outwards along the radial direction of the support shaft 2 (in the radial expansion process, the expansion sheet sleeve 3 still maintains a cylindrical structure) under the drive of the inner sleeve 31 until the outer sleeve 32 is fully contacted with the bearing position 61 of the cantilever bearing box 6, and alignment and positioning work can be completed; then, the positioning device fixed with the cantilever bearing box is moved to a lathe, the cantilever bearing box 6 is clamped by the clamping jaw 7, the power shaft 1 is retracted by the power traction device, and the expansion sheet sleeve 321 also completes the restoration work under the action of the elastic element 5; finally, the positioning device is withdrawn from the cantilever bearing housing 6, so that the subsequent processing of the cantilever bearing housing 6 can be performed.

Referring to fig. 6, the cantilever bearing box 6 is aligned and positioned by the positioning device, and the processing work of all the bearing positions 61 and the flange positions 62 inside the cantilever bearing box 6 is completed at one time without adjusting the clamping position of the cantilever bearing box 6 for a plurality of times, so that the overall processing efficiency is effectively improved.

In summary, the positioning device of the cantilever bearing box provided by the utility model has the advantages of simple overall structure and convenience in operation; when a workpiece is required to be positioned, the power shaft drives the inner sleeve and the outer sleeve to move towards the circular table section, and the outer sleeve can be gradually expanded outwards along the radial direction in the moving process through the shaft diameter change of the circular table section until the outer sleeve is completely attached to the inner wall of the workpiece, so that the rapid alignment and positioning work is realized; the defects that further deviation correction work is needed to be carried out manually after positioning, and the alignment precision and the production efficiency are low are overcome.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.

Claims

1. The positioning device of the cantilever bearing box is characterized by comprising a power shaft, a supporting shaft and an expansion sleeve which are sequentially sleeved from inside to outside; the support shaft comprises a cylindrical section and a circular table section; the cylindrical section is connected with the small head end of the circular table section; the expansion sleeve comprises an inner sleeve and an outer sleeve; the inner sleeve is in sliding connection with the cylindrical section, and one end far away from the circular table section is clamped with the power shaft; the outer sleeve is simultaneously connected with the inner sleeve and the round platform section in a sliding manner.

2. The positioning device of a cantilever bearing housing according to claim 1, wherein the cylindrical section and the circular truncated cone section are coaxially arranged.

3. The cantilever bearing housing positioning apparatus of claim 1, further comprising a fixed disk; the fixed disc is coaxially connected with the supporting shaft.

4. A positioning device for a cantilever bearing housing according to claim 3, wherein the power shaft is provided with threads on the outer circumferential surface of the fixed disc.

5. The positioning device of a cantilever bearing housing according to claim 1, wherein the inner sleeve comprises a cylindrical sleeve and a conical sleeve coaxially connected; one end of the cylindrical sleeve is connected with the small end of the taper sleeve; the other end of the cylinder sleeve is arranged towards the circular table section; the inclination angle of the taper sleeve is consistent with the inclination angle of the round platform section.

6. The cantilever bearing housing positioning apparatus of claim 5, wherein the outer sleeve comprises at least two expansion shells; the expansion sheet is sleeved into a cylindrical structure; the inner side walls of the expansion sheet sleeves close to the two ends are provided with inclined planes with the inclination degree consistent with that of the taper sleeves; one inclined plane is in sliding connection with the round platform section, and the other inclined plane is in sliding connection with the taper sleeve.

7. The positioning device of a cantilever bearing housing according to claim 5, wherein the outer periphery of the expansion sheet sleeve is sleeved with an elastic element.