CN216325148U

CN216325148U - Material-saving optimized rotating center device

Info

Publication number: CN216325148U
Application number: CN202122992422.XU
Authority: CN
Inventors: 王勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-04-19
Anticipated expiration: 2031-11-26

Abstract

A material-saving optimized rotary centre device comprises a shaft sleeve, a shaft handle and a mandrel, wherein the shaft sleeve is cylindrical, a first stepped through hole is formed in the middle of the shaft sleeve along the axis direction, the shaft handle is in a circular truncated cone shape, a second stepped through hole is formed in the middle of the shaft sleeve along the axis direction, the outer diameter of the shaft sleeve is larger than that of the shaft handle, one end of the shaft sleeve is coaxially connected with one end of the shaft sleeve in a friction welding mode, the mandrel is rotatably connected into the shaft sleeve and the shaft handle, one end of the mandrel, far away from the shaft handle, extends out of the shaft sleeve and is in a conical shape, the shaft sleeve and the shaft handle are separately processed, different cylindrical parts can be respectively selected to be processed according to the sizes of the shaft sleeve and the shaft handle when cylindrical raw materials are selected, the cutting depth is reduced, material waste is effectively avoided, and meanwhile, the shaft sleeve and the shaft handle are coaxially connected in a friction pressure welding mode, so that the mechanical strength of the rotary centre device is ensured, the production and processing efficiency is improved.

Description

Material-saving optimized rotating center device

Technical Field

The utility model relates to the technical field of numerical control machine tool equipment, in particular to a material-saving optimized rotating center device.

Background

The rotary centre device is mainly used for processing shaft parts on a lathe, and positioning is performed by means of a central hole, so that a workpiece obtains high dimensional precision, but due to frequent use, a tool scratches a conical end in processing, the conical end is broken, the surface abrasion influences use and even scrapping, and economic loss can be caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the existing rotating centre device is difficult to produce and process and materials are greatly wasted, the utility model provides the material-saving optimized rotating centre device.

The technical scheme of the utility model is as follows:

the utility model provides a economize material optimization type live center device, includes axle sleeve, arbor and dabber, the axle sleeve includes cylinder or round platform shape, and its middle part is equipped with first ladder through-hole along the axis direction, the arbor includes cylinder or round platform shape, and its middle part is equipped with second ladder through-hole along the axis direction, the axle sleeve external diameter is greater than the arbor external diameter, and arbor one end and axle sleeve one end are coaxial and friction weld and be connected, and this kind of design makes axle sleeve and arbor separately process, and the size of post spare also can separately select as required when processing, has reduced axle sleeve and arbor and has added the cutting depth in man-hour, has improved production efficiency, has effectively avoided the material waste, and the joint strength of axle sleeve and arbor has been guaranteed again to friction weld's mode simultaneously.

Further, the inside bearing group that is equipped with of first step through-hole and/or second step through-hole, the dabber passes through the bearing group and rotates to be connected inside axle sleeve and/or mandrel, the dabber is kept away from one end of mandrel and is stretched out the axle sleeve and arrange, and stretches out the end shape and include the toper, and the axle center of machined part is treated in the tight top of toper one end, and the completion is treated the gyration of machined part and is fixed.

According to the material-saving optimized rotating centre device, the shaft sleeve is cylindrical, the shaft handle is in a round table shape, one end with the larger diameter is in friction welding connection with one end of the shaft sleeve, and the shaft sleeve and the shaft handle are guaranteed to have larger connection strength.

Furthermore, the specifications of the adjacent ends of the first stepped through hole and the second stepped through hole are the same, so that the mandrel is more labor-saving to arrange.

Preferably, the diameter of the thick end of the mandrel is 0.3-0.7 times of the diameter of the shaft sleeve, and a welding distance between the mandrel and the shaft sleeve is reserved.

According to the material-saving optimized rotating center device, the first bearing group is arranged in the first step through hole, the second bearing group is arranged in the second step through hole, the core shaft is rotatably connected to the shaft sleeve and the shaft handle through the bearing groups, the concentricity of the two ends of the core shaft is guaranteed when the core shaft rotates along with a workpiece to be machined, and the service life of the core shaft is prolonged.

Furthermore, the first bearing group comprises a first radial bearing and a thrust ball bearing, the thrust ball bearing is positioned at the bottom end inside the shaft sleeve, the first radial bearing is arranged on the outer side of the thrust ball bearing, the mandrel can smoothly rotate around the axis, and meanwhile, when the workpiece to be machined is tightly jacked, the mandrel can still smoothly rotate.

According to the material-saving optimized rotating centre device, the shaft handle comprises the cock, the cock is located at the outer end of the shaft handle and is screwed in the shaft handle, and one end, far away from the shaft sleeve, of the mandrel is rotatably connected with the cock, so that the mandrel is prevented from falling off from the shaft sleeve.

Furthermore, the second bearing group comprises a second radial bearing which is located at one end, far away from the shaft sleeve, of the mandrel and is attached to the inner end of the cock, the concentricity of the two ends of the mandrel is guaranteed when the mandrel rotates, the service life of the mandrel is prolonged, and the second radial bearing can be simply and quickly arranged due to the design.

According to the material-saving optimized rotating center device, the taper of the conical end of the mandrel is 55-65 degrees, so that the mechanical strength of the conical top end is effectively guaranteed while the conical end effectively pushes a workpiece to be machined.

The utility model has the beneficial effects that: the utility model relates to a material-saving optimized rotary centre device, wherein the shell part of the rotary centre device is divided into a shaft sleeve and a shaft handle, and the shaft sleeve and the shaft handle are separately processed, so that different cylindrical parts can be respectively selected for processing according to the sizes of the shaft sleeve and the shaft handle when cylindrical parts are selected, the cutting depth is reduced, the material waste is effectively avoided, meanwhile, one end of the shaft sleeve is coaxially connected with the thick end of the shaft handle in a friction pressure welding mode, the mechanical strength of the rotary centre device is ensured, and the production and processing efficiency is improved.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model.

In the drawings:

fig. 1 is a schematic structural view of a live center device in an embodiment;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a schematic view of the internal structure of FIG. 2;

the components represented by the reference numerals in the figures are:

1. the device comprises a shaft sleeve, 11, a sealing ring, 12, a first radial bearing, 13, a flat washer, 14, a thrust ball bearing, 2, a shaft handle, 21, a cock, 22, a second radial bearing, 3, a mandrel, 31, a jacking shaft, 32 and a fixed shaft.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.

Examples

The embodiment provides a material-saving optimized rotating centre device, referring to fig. 1, the device comprises a shaft sleeve 1, a shaft handle 2 and a mandrel 3, wherein the shaft handle 2 is in friction welding with one end of the shaft sleeve 1, the shaft sleeve 1 and the shaft handle 2 can be separately processed in the design mode, the size of cylindrical raw materials can be separately selected according to needs during processing, the cutting depth during processing of the shaft sleeve 1 and the shaft handle 2 is reduced, the production efficiency is improved, the material waste is effectively avoided, meanwhile, the connection strength of the shaft sleeve 1 and the shaft handle 2 is ensured in the friction welding mode, stepped through holes are formed in the shaft sleeve 1 and the shaft handle 2, and the mandrel 3 is rotatably connected in the stepped through holes.

In this embodiment, combine fig. 2, axle sleeve 1 is the cylinder type structure, and its middle part is equipped with first step through-hole along the axis direction, arbor 2 is round platform shape structure, and its middle part is equipped with the second step through-hole along its axis direction, the great one end of 2 diameters of arbor is coaxial and through friction pressure welding welded connection with axle sleeve 1 one end, simultaneously the diameter that the arbor 2 is close to axle sleeve 1 one end is 0.5 times axle sleeve 1 diameter, reserves the welding distance between arbor 2 and the axle sleeve 1.

Furthermore, the diameter that first step through-hole is close to 2 one ends of arbor is less than the diameter of the other end, the second step through-hole is close to 1 one end of axle sleeve and is the same with first step through-hole specification, makes dabber 3 arrange more laborsavingly.

In this embodiment, with reference to fig. 3, the affiliated mandrel 3 includes a top mandril 31 and a fixed shaft 32, one end of the top mandril 31 is in a conical structure, and the other end is in a cylindrical structure, the fixed shaft 32 is in a stepped shaft shape, and one end of the fixed shaft is coaxially connected with the cylindrical end of the top mandril 31, the mandrel 3 can extend into the first stepped through hole and the second stepped through hole from the larger end of the first stepped through hole, and the conical end of the top mandril 31 is located outside the shaft sleeve 1, and the axis of the workpiece is treated through top jacking, the rotation of the workpiece is fixed after completion, and the conical degree of the conical end of the top mandril 31 is 60 degrees, so that the conical end effectively guarantees the mechanical strength of the conical top end while effectively jacking the workpiece.

Further, a sealing ring 11 and a first bearing group are arranged inside the first step through hole, the mandrel 3 is rotatably connected with the shaft sleeve 1 through the first bearing group, and the sealing ring 11 is located on the outer side of the first bearing group and used for fixing the first bearing group.

Further, first bearing group includes first radial bearing 12, thrust ball bearing 14 and plain washer 13, first radial bearing 12 outer lane cooperatees with first step through-hole inner wall, and the inner circle cooperatees near tight axle 31 one end of top with fixed axle 32, thrust ball bearing 14 is located first radial bearing 12 inboard, and one side and first step through-hole card and be connected, is equipped with plain washer 13 between opposite side and the first radial bearing 12, just fixed axle 32 sets up plain washer 13 position and is equipped with the recess, plain washer 13 joint is in the recess, makes dabber 3 can be around the axis rotation smoothly under first radial bearing 12 effect, when treating the machined part in the top tightly simultaneously, makes dabber 3 can still rotate smoothly under thrust ball bearing 14 effect.

Furthermore, the second bearing group is arranged at one end, far away from the shaft sleeve 1, of the second stepped through hole, the mandrel 3 is rotatably connected with the shaft handle 2 through the second bearing group, the concentricity of the two ends of the mandrel 3 is guaranteed when the mandrel rotates along with a workpiece to be machined in the design mode of the first bearing group and the second bearing group, and the service life of the mandrel 3 is prolonged.

Furthermore, the second bearing group comprises a second axial bearing 22, the outer ring of the second axial bearing is matched with the inner wall of one end, far away from the shaft sleeve 1, of the second stepped through hole, the inner ring of the second axial bearing is matched with one end, far away from the shaft sleeve 1, of the mandrel 3, the shaft handle 2 further comprises a cock 21, the cock 21 is connected to the inside of one end, far away from the shaft sleeve 1, of the second stepped through hole in a rotating mode and is connected with one end, far away from the jacking shaft 31, of a fixing shaft 32 in a clamping and rotating mode, the mandrel 3 is prevented from falling off from the end of the shaft sleeve 1 in a non-working state, meanwhile, when the cock 21 is screwed into the second stepped through hole, the inner end of the cock abuts against the second axial bearing 22, the concentricity of the two ends of the mandrel 3 when the mandrel 3 rotates is guaranteed, the service life of the mandrel 3 is prolonged, and meanwhile, the design enables the second axial bearing 22 to be arranged more simply and rapidly.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or additions or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The material-saving optimized rotating center device is characterized by comprising a shaft sleeve (1), a shaft handle (2) and a mandrel (3), wherein the shaft sleeve (1) comprises a cylinder or a round table shape, a first step through hole is formed in the middle of the shaft sleeve along the axis direction, the shaft handle (2) comprises a cylinder or a round table shape, a second step through hole is formed in the middle of the shaft sleeve along the axis direction, one end of the shaft handle (2) is coaxially connected with one end of the shaft sleeve (1) in a friction welding mode, the outer diameter of the shaft sleeve (1) is larger than that of the shaft handle (2), a bearing set is arranged inside the first step through hole and/or the second step through hole, the mandrel (3) is rotatably connected inside the shaft sleeve (1) and/or the shaft handle (2) through the bearing set, one end, far away from the shaft handle (2), of the mandrel (3) extends out of the shaft sleeve (1) to be arranged, and the extension end of the mandrel (3) comprises a cone shape.

2. The material-saving optimized rotating center device as claimed in claim 1, wherein the shaft sleeve (1) is cylindrical, the shaft shank (2) is truncated cone-shaped, and the larger diameter end of the shaft shank is connected with one end of the shaft sleeve (1) in a friction welding mode.

3. The material saving optimized live center device as claimed in claim 2, wherein the adjacent ends of the first stepped through hole and the second stepped through hole have the same specification.

4. The material-saving optimized rotating center device as claimed in claim 3, wherein the diameter of the thick end of the shaft shank (2) is 0.3-0.7 times of the diameter of the shaft sleeve (1).

5. The material-saving optimized rotating center device as claimed in claim 1, wherein a first bearing set is arranged in the first stepped through hole, and a second bearing set is arranged in the second stepped through hole.

6. The material saving optimized type live center device according to claim 5, wherein the first bearing set comprises a first radial bearing (12) and a thrust ball bearing (14), the thrust ball bearing (14) is positioned at the inner bottom end of the shaft sleeve (1), and the first radial bearing (12) is arranged on the outer side of the thrust ball bearing.

7. A material saving optimized type live center device according to claim 5, characterized in that the shaft shank (2) comprises a cock (21), the cock (21) is positioned at the outer end of the shaft shank (2) and screwed in the shaft shank (2), and one end of the mandrel (3) far away from the shaft sleeve (1) is rotatably connected with the cock (21).

8. The material saving optimized type rotating center device as claimed in claim 7, wherein the second bearing set comprises a second radial bearing (22) which is located at one end of the mandrel (3) far away from the shaft sleeve (1) and is jointed with the inner end of the cock (21).

9. A material saving optimised rotating centre device according to claim 1, wherein the taper of the tapered end of the spindle (3) is 55 ° -65 °.