CN211966206U

CN211966206U - Special tip device for machining thin shaft type gear

Info

Publication number: CN211966206U
Application number: CN202020573948.7U
Authority: CN
Inventors: 浠诲缓; 任建
Original assignee: Zhejiang Renhe Precision Machinery Co ltd
Current assignee: Zhejiang Renhe Precision Machinery Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-11-20
Anticipated expiration: 2030-04-16

Abstract

A centre device specially used for machining thin shaft type gears comprises a mounting assembly, a centre assembly and a size adapting assembly. The mounting assembly includes a mounting barrel, and an assembly barrel. The top subassembly includes top spare, top, supports top, spacing groove to and stop screw. The limiting screw is matched with the limiting groove to fix the tip piece. The size adaptation assembly comprises a stepped hole, a guide nail, a fixing screw and an elastic piece. The guide nail is abutted against the abutting end of the center assembly, and the elastic part deforms when the center of the center assembly is subjected to abutting force. When the center device special for machining the thin-shaft gear is used, the center can be always abutted against the gear workpiece under the action of the elastic piece, and the phenomenon that the gear workpiece is deformed and separated from abutting in the machining process is avoided, so that the gear workpiece cannot swing in the rotating process, the machining error cannot be increased due to swinging, and the machining precision is improved.

Description

Special tip device for machining thin shaft type gear

Technical Field

The utility model relates to a gear machining equipment technical field, in particular to top device that is used for thin axle class gear machining specially.

Background

At present, from the common practice in the field of gear machining at home and abroad, methods such as rolling, inserting, shaving, grinding and the like are basically adopted. However, in any method, the gear workpiece is firstly abutted, and there are two general methods for abutting, one is abutting at one end, the other is clamped, and the other is abutting at both ends. However, for some gears of the thin shaft type, such as gears of the thin shaft type with a diameter smaller than 6 cm and a relatively large length, i.e., gears of the thin shaft type with a relatively large length-diameter ratio, during the processing, the gears are easily deformed, such as bent. When the gear workpiece is deformed, the axial dimension of the gear workpiece changes, and then the gear workpiece swings and shakes when being machined and rotated, so that the precision of the machined gear is reduced, and the gear workpiece is even damaged.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a can solve the top device of above-mentioned problem special use for thin axle type gear machining to solve above-mentioned problem.

A centre device specially used for machining thin shaft type gears comprises a mounting assembly, a centre assembly arranged in the mounting assembly and a size adapting assembly arranged on the centre assembly. The mounting assembly comprises a mounting cylinder and an assembling cylinder arranged in the mounting cylinder in a penetrating mode. The centre assembly comprises a centre part, a centre arranged at one end of the centre part, a butting end arranged at the other end of the centre part, a limiting groove arranged in the radial direction of the centre part and a limiting screw arranged on the assembling cylinder. The limiting screw is matched with the limiting groove to fix the tip piece. The size adapting assembly comprises a step hole arranged at one axial end of the assembling cylinder, a guide nail penetrating the step hole, a fixing screw fixed at the free end of the step hole, and an elastic piece clamped between the guide nail and the fixing screw. The guide nail is abutted against the abutting end of the center assembly, and the elastic part deforms when the center of the center assembly is subjected to abutting force.

Further, the assembling cylinder is provided with an assembling ring, and the assembling ring and the mounting cylinder are mutually fixed so as to mutually fix the assembling cylinder and the mounting cylinder together.

Further, the limiting groove extends along the axial direction of the tip piece, and one end of the limiting screw is inserted into the limiting groove.

Furthermore, the assembling cylinder also comprises a step part arranged inside, the abutting end is provided with a step structure, and the step structure is matched with the step part to position the axial movement direction of the tip part.

Further, the tip is of a conical structure.

Furthermore, the center is also provided with a relief part, and the relief part enables the conical structure to be an incomplete cone along the axial direction.

Furthermore, the mounting assembly further comprises a concentricity adjusting mechanism, the concentricity adjusting mechanism comprises at least three threaded through holes arranged on the mounting cylinder and at least three pins respectively arranged in the threaded through holes, and one end of each pin abuts against the outer side wall of the assembling cylinder so as to adjust the position of the central shaft of the assembling cylinder.

Furthermore, the assembling cylinder is provided with an assembling ring and a plurality of assembling bolts inserted in the assembling ring, the assembling ring is provided with a plurality of through holes for inserting the assembling bolts, the diameter of each through hole is larger than that of each assembling bolt, and the assembling bolts are fixed on the installing cylinder.

Further, the elastic member is a spring, and the spring is always in a compressed state.

Compared with the prior art, the utility model provides a top device for thin axle class gear machining specially is in the use, because under the effect of elastic component, make it can support the top always gear workpiece is last, avoid because gear workpiece takes place to warp and breaks away from to support in the course of working, makes this gear workpiece can not swing at rotatory in-process like this, and then just can not increase machining error because of the swing, improves the machining precision yet.

Drawings

Fig. 1 is an exploded schematic view of a tip device specially used for machining a thin shaft gear according to the present invention.

Fig. 2 is a schematic cross-sectional structure view of a cooling pipe of the center device specially used for machining gears of thin shafts in fig. 1.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1 to fig. 2, it is a schematic structural diagram of a tip device specially used for machining a thin shaft gear according to the present invention. The tip device specially used for machining thin shaft type gears comprises a mounting assembly 10, a tip assembly 20 arranged in the mounting assembly 10, and a size adapting assembly 30 arranged on the tip assembly 20. It is contemplated that the center device dedicated for machining a thin shaft gear may further include other functional modules, such as a mounting module for mounting the center device on a machine platform, a connecting module, etc., which are well known to those skilled in the art and will not be described herein.

The mounting assembly 10 includes a mounting tube 11, an assembling tube 12 inserted into the mounting tube 11, and a concentricity adjusting mechanism 13 disposed between the mounting tube 11 and the assembling tube 12. The mounting cylinder 11 is used for connecting with a machine table (not shown) to mount the center device on the machine table, and the mounting method thereof should be prior art and will not be described herein again. The assembling cylinder 12 is inserted into the mounting cylinder 11 and includes an assembling ring 121, a plurality of through holes 122 provided on the assembling ring 121, and a plurality of assembling bolts 123 respectively inserted into the through holes 122. The assembly ring 121 is disposed at the middle of the assembly cylinder 12. Preferably, the outer diameter of the assembly ring 121 corresponds to the outer diameter of the mounting cylinder 11. The assembling bolt 123 passes through the through hole 122 and is screwed on the mounting cylinder 11, thereby fixing the relative position between the mounting cylinder 11 and the assembling cylinder 12. The diameter of the through hole 122 is slightly larger than the diameter of the assembling bolt 123 to facilitate the adjustment of the position of the central axis between the assembling cylinder 12 and the mounting cylinder 11, and thus the coaxiality of the center point assembly 20, under the adjustment of the concentricity adjusting mechanism 13. The interior of the assembled barrel 12 is also provided with a step 124, the function of the step 124 being described in more detail below in connection with the tip assembly 20. The concentricity adjusting mechanism 13 includes at least three threaded through holes 131 provided in the mounting cylinder 11, and at least three pins 132 respectively provided in the threaded through holes 131. In the present embodiment, the threaded through-hole 131 has four. One end of the pin 132 abuts against the outer sidewall of the assembly cylinder 12 to adjust the position of the central axis of the assembly cylinder 12, and thus the position of the central axis between the assembly cylinder 12 and the mounting cylinder 11.

The tip assembly 20 includes a tip member 21, a tip 22 disposed at one end of the tip member 21, an abutting end 23 disposed at the other end of the tip member 21, a limiting groove 24 disposed in a radial direction of the tip member 22, and a limiting screw 25 disposed on the assembling cylinder 12. The tip 22 is adapted to abut against the thin shaft and thus may be of a conical configuration. It is of course conceivable that the thin shaft also has a conical bore. Because the diameter of the thin shaft is small, in order to enable a cutter to abut against the thin shaft and roll out teeth, the tip 22 is provided with a relief part 221, and the relief part 221 enables the conical structure to be an incomplete cone along the axial direction. The abutting end 23 has a step structure, which is matched with the step part 124 of the assembling cylinder 12 to achieve the guiding and limiting functions. The limiting groove 24 extends along the axial direction of the tip part 21, so that the tip part 21 can move along the axial direction of the tip part and cannot move along the circumferential direction. The limiting screw 25 is screwed on the assembling cylinder 12, and one end of the limiting screw abuts against the limiting groove 24 to prevent the tip part 21 from rotating along with the assembling cylinder to achieve the purpose of fixing the tip part 21.

The size adapting assembly 30 includes a stepped hole 31 provided at one axial end of the assembling cylinder 12, a guide pin 32 inserted into the stepped hole 31, a fixing screw 33 fixed at a free end of the stepped hole 31, and an elastic member 34 interposed between the guide pin 32 and the fixing screw 32. The purpose of the stepped hole 31 is to fix the position of the guide pin 32, i.e., the pin head of the guide pin 32 abuts against the stepped hole 31. One end of the guide pin 32 abuts against the end surface of the abutting end 23 of the tip member 21 and the elastic member 34 is deformed when the abutting force is applied to the tip 22 of the tip member 21. The elastic element 34 may be a spring, and the spring is always in a compressed state to always apply an abutting force to the abutting element 21 to prevent it from moving in the axial direction.

Compared with the prior art, the utility model provides a top device for thin axle class gear machining specially is in the use, because under the effect of elastic component 33, make top 22 can support always to the top gear workpiece is last, avoids breaking away from to support because gear workpiece takes place to warp in the course of working, makes this gear workpiece can not swing at rotatory in-process like this, and then just can not increase machining error because of the swing, improves the machining precision.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. A special centre device for thin shaft gear machining is characterized in that: the centre device specially used for machining the thin shaft type gear comprises a mounting assembly, a centre assembly arranged in the mounting assembly and a size adapting assembly arranged on the centre assembly, wherein the mounting assembly comprises a mounting cylinder and an assembling cylinder penetrating through the mounting cylinder, the centre assembly comprises a centre part, a centre arranged at one end of the centre part, a butting end arranged at the other end of the centre part, a limiting groove arranged in the radial direction of the centre part and a limiting screw arranged on the assembling cylinder, the limiting screw is matched with the limiting groove to fix the centre part, the size adapting assembly comprises a stepped hole arranged at one axial end of the assembling cylinder, a guide screw penetrating through the stepped hole and a fixing screw fixed at the free end of the stepped hole, and the elastic part is clamped between the guide nail and the fixing screw, and the guide nail is abutted against the abutting end of the center assembly and deforms when the center of the center assembly is subjected to abutting force.

2. A centre device specially used for machining thin shaft type gears according to claim 1, wherein: the assembling cylinder is provided with an assembling ring, and the assembling ring and the mounting cylinder are mutually fixed so as to mutually fix the assembling cylinder and the mounting cylinder together.

3. A centre device specially used for machining thin shaft type gears according to claim 1, wherein: the limiting groove extends along the axial direction of the tip piece, and one end of the limiting screw is inserted into the limiting groove.

4. A centre device specially used for machining thin shaft type gears according to claim 1, wherein: the assembling barrel further comprises a step portion arranged inside, the abutting end is provided with a step structure, and the step structure is matched with the step portion to position the axial movement direction of the tip piece.

5. A centre device specially used for machining thin shaft type gears according to claim 1, wherein: the tip is a conical structure.

6. A centre device special for machining thin shaft type gears according to claim 5, characterized in that: the center is also provided with an avoiding part which enables the conical structure to be an incomplete cone.

7. A centre device specially used for machining thin shaft type gears according to claim 1, wherein: the mounting assembly further comprises a concentricity adjusting mechanism, the concentricity adjusting mechanism comprises at least three threaded through holes formed in the mounting cylinder and at least three pins respectively arranged in the threaded through holes, and one end of each pin abuts against the outer side wall of the assembling cylinder to adjust the position of the central shaft of the assembling cylinder.

8. A centre device specially used for machining thin shaft type gears according to claim 7, wherein: the assembling cylinder is provided with an assembling ring and a plurality of assembling bolts inserted in the assembling ring, a plurality of through holes for inserting the assembling bolts are formed in the assembling ring, the diameter of each through hole is larger than that of each assembling bolt, and the assembling bolts are fixed on the installing cylinder.

9. A centre device specially used for machining thin shaft type gears according to claim 1, wherein: the elastic piece is a spring, and the spring is always in a compressed state.