CN210756617U

CN210756617U - Adjustable double-eccentric sleeve machining device

Info

Publication number: CN210756617U
Application number: CN201921696707.5U
Authority: CN
Inventors: 宋建军; 华志强
Original assignee: Jiangsu Guomao Reducer Group Co ltd
Current assignee: Jiangsu Guomao Reducer Group Co ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-06-16
Anticipated expiration: 2029-10-11

Abstract

The utility model discloses a two eccentric bushing processingequipment with adjustable, including toper main shaft fixed part, eccentricity adjusting part and installation axle part, toper main shaft fixed part includes toper main shaft, guide block, eccentric location strip and trapezoidal scale, the toper main shaft is fixed with the lathe main shaft cooperation, opens the sliding tray of two types of dogbones on toper main shaft one side circular plane, the sliding tray is packed into the sliding block of type of dogbones from the left and right sides, trapezoidal scale has the several step, and every step corresponds an eccentricity "an". The utility model has the advantages that when the tool is used for processing the double eccentric sleeves, the eccentricity can be flexibly adjusted; the trapezoidal scale can quickly and conveniently read the eccentric distance of the double eccentric sleeves, so that the calibration time is reduced; the assembly and disassembly are convenient, the double eccentric sleeves with various specifications can be processed only by preparing the installation shaft parts with different shaft diameters, and the tool specifications are greatly reduced; and the device adopts taper shaft and tight device that rises, can effectively improve positioning accuracy.

Description

Adjustable double-eccentric sleeve machining device

Technical Field

The utility model relates to a spare part field of speed reducer, concretely relates to double eccentric cover processingequipment with adjustable.

Background

Among the parts of the cycloidal pin gear speed reducer, the quality of the double eccentric sleeves has great influence on the cycloidal pin gear speed reducer, and the damage rate of the low-quality double eccentric sleeves is greatly increased in the process of meshing the cycloidal gears, so that the normal use of the cycloidal pin gear speed reducer is seriously influenced. Because the position of the two excircle bearings of the double eccentric sleeve requires a tolerance zone of k6, the inner hole of the double eccentric sleeve requires a tolerance zone of H7, and the requirement on coaxiality is high. When machining a double eccentric bearing position, the following two methods are generally adopted:

1. the four-jaw chuck is used for adjusting two jaws of the chuck, the central line of an inner hole of the eccentric sleeve is superposed with the central line of the chuck, so that the eccentric sleeve presents an asymmetric left jaw and an asymmetric right jaw, and the eccentricity is determined in a scribing correction mode.

2. Two central holes with one eccentric distance are drilled on two end faces of the core rod for machining the double eccentric sleeves, and the double eccentric sleeve tool is fixed by using a double-center method to realize the machining of the double eccentric sleeves.

The first method adopts a four-jaw chuck for clamping, so that the machining efficiency is low, the precision is low and the requirement on an operator is high; the latter method is a common double eccentric sleeve processing mode at the present stage. However, because the aperture specification of the double eccentric sleeves is large, and the eccentric distance of the eccentric sleeve with the same aperture specification is also large, the number of processing tools for the double eccentric sleeves with different apertures and different eccentric distances is large, which affects the working efficiency, and therefore, there is a need to develop a device and a processing method thereof capable of solving the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve develops a two eccentric cover processingequipment with adjustable, including toper main shaft fixed part, eccentricity adjustment part and installation axle part, its characterized in that, toper main shaft fixed part includes toper main shaft, guide block, eccentric location strip and trapezoidal scale, the toper main shaft is fixed with the cooperation of lathe main shaft, opens the sliding tray of two types of dogwords on toper main shaft one side circular plane, the sliding tray is packed into the sliding block of type from the left and right sides, and is clearance fit with the sliding block to can carry out the horizontal slip on the sliding tray, trapezoidal scale has the several step, and every step corresponds an eccentricity "an".

Preferably, the eccentricity adjusting part comprises a guide groove, an eccentric positioning groove, an adjusting fastening block, a fastening threaded hole and a connecting threaded hole, the guide groove and the guide block are in clearance fit, the eccentric positioning groove is provided with a plurality of grooves, the interval of each groove is set to be an eccentric distance 'a', an eccentric positioning strip is embedded into the eccentric positioning groove to play a role in positioning the eccentric distance, the adjusting fastening block is set to be two in the vertical direction, the interval is set to be capable of clamping the sliding block, the fastening threaded hole is two, the center of the adjusting fastening block is provided with a threaded hole, and the fastening threaded hole is fixed corresponding to the sliding block by using an inner hexagonal screw.

Preferably, the installation shaft part comprises an installation shaft, a tensioning block, a connecting thread, a tensioning connecting threaded hole and a tensioning hole with taper, the tensioning connecting thread is arranged on the tensioning block, the tensioning block and the tensioning hole with taper are in interference fit, four grooves are formed in the outer ring of the tensioning hole, and the tensioning connecting threaded hole is connected with the tensioning connecting threaded hole to enable the four walls of the groove of the tensioning hole to be outwards expanded, so that the double eccentric sleeves are axially fixed and required to be machined.

Preferably, the guide block, the eccentric positioning strip and the trapezoidal scale are integrally arranged with the conical main shaft, the sliding groove and the circular plane on one side of the conical main shaft.

The adjustable double-eccentric sleeve processing device has the advantages that firstly, the device is skillfully designed, and when the tool is used for processing double eccentric sleeves, the eccentric distance can be flexibly adjusted; secondly, the trapezoidal scales can quickly and conveniently read the eccentric distance of the double eccentric sleeves, so that the calibration time is reduced; thirdly, the double-eccentric sleeve has strong universality and convenient disassembly and assembly, and can be processed into double-eccentric sleeves with various specifications only by preparing installation shaft parts with different shaft diameters, so that the tool specifications are greatly reduced, and the labor force is reduced; and the device adopts taper shaft and tight device that rises, can effectively improve positioning accuracy.

Drawings

Fig. 1 is a schematic diagram of the mechanism of the present invention;

FIG. 2 is a sectional view of a tapered spindle attachment portion A-A

FIG. 3 is a front view of the conical spindle attachment portion A-A;

FIG. 4 is a front view of an eccentricity adjusting part B-B,

FIG. 5 is a sectional view of an eccentricity adjusting part B-B

FIG. 6 is a sectional view of an eccentricity adjustment portion and A-A;

FIG. 7 is a schematic view of the structure of the mounting shaft portion;

the device comprises a 1-conical main shaft fixing part, a 2-eccentricity adjusting part, a 3-mounting shaft part, a 4-double eccentric sleeve, a 11-conical main shaft, a 12-sliding block, a 13-sliding groove, a 14-guide block, a 15-eccentric positioning strip, a 16-trapezoidal scale, a 21-guide groove, a 22-eccentric positioning groove, a 23-adjusting fastening block, a 24-fastening threaded hole, a 25-connecting threaded hole, a 31-mounting shaft, a 32-tensioning block, a 33-connecting thread, a 34-tensioning connecting threaded hole, a 35-tensioning hole and a 321-tensioning connecting thread.

Detailed Description

In order to make the technical field person understand the scheme of the present invention better, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical scheme in the embodiments of the present invention. It is to be understood that the embodiments described are merely exemplary of the invention, and that no limitations are intended to the details of construction or design herein shown. The present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for the purpose of providing a more thorough understanding of the present disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Embodiment, with reference to fig. 1-3, an adjustable double eccentric sleeve processing device comprises a conical main shaft fixing part 1, an eccentricity adjusting part 2 and a mounting shaft part 3, the conical main shaft fixing part 1 comprises a conical main shaft 11, a guide block 14, an eccentric positioning strip 15 and a trapezoidal scale 16, the conical main shaft 11 is matched and fixed with a main shaft of a machine tool, two convex sliding grooves 13 are formed on the circular plane at one side of the conical main shaft 11, slide grooves 13 are fitted into convex slide blocks 12 from both left and right sides and are in clearance fit with slide blocks 12, the guide block 14, the eccentric positioning strip 15 and the trapezoidal scale 16 are integrally arranged with the conical main shaft 11, the sliding groove 13 and the circular plane at one side of the conical main shaft 11, the trapezoidal scale 16 is provided with a plurality of steps, and each step corresponds to an eccentric distance 'a'. The conical main shaft 11 in the conical main shaft fixing part 2 needs to be installed in a matching mode with a lathe main shaft, the tool is guaranteed to be concentric with a lathe machining axis, and machining accuracy of the tool is guaranteed.

With reference to fig. 4 to 6, the eccentricity adjusting portion 2 includes a guide groove 21, an eccentric positioning groove 22, an adjusting fastening block 23, a fastening screw hole 24 and a connecting screw hole 25, the guide groove 21 and the guide block 14 are in clearance fit, a plurality of grooves are formed in the eccentric positioning groove 22, the distance between each groove is set to be a required eccentric distance "a", the eccentric positioning strip 15 is embedded into the eccentric positioning groove 22 to play a role of positioning eccentric distance, the adjusting fastening block 23 is set to be two, the distance is set to be capable of clamping the sliding block 12, the fastening screw hole 24 is set to be two, a screw hole is formed in the center of the adjusting fastening block 23, and the fastening screw hole 24 and the sliding block 12 are fixed correspondingly by using an inner hexagonal screw.

Referring to fig. 7, the mounting shaft portion 3 includes a mounting shaft 31, a tightening block 32, a connecting thread 33, a tightening connecting threaded hole 34, and a tightening hole 35 with a taper, the tightening block 32 is provided with a tightening connecting thread 321, the tightening block 32 and the tightening hole 35 with the taper are in interference fit, the outer ring of the tightening hole 35 is provided with four slots, the tightening connecting threaded hole 34 is connected with the tightening connecting thread 321, so that four walls of the slot of the tightening hole 35 are outwardly expanded, thereby realizing axial fixation of the double eccentric sleeves to be processed, the connecting thread 33 is in connection fit with the connecting threaded hole 25, the inner holes of the double eccentric sleeves to be processed are sleeved on the mounting shaft 31, the double eccentric sleeves to be processed are fixed by a flat key, and the two are in clearance fit, thereby fixing the eccentric distance adjusting portion 2 and the mounting shaft portion 3. Two slide blocks 12 are fitted into slide groove 13 from the left or right side of slide groove 13 and can slide left or right. A threaded hole is formed in the center of sliding block 12, so that the sliding block can be fixed when being installed next step conveniently. The middle position on the plane of one side of the conical main shaft 11 is a guide block 14 which can slide left and right by matching with a guide groove 21 of the eccentricity adjusting part 2.

The center of the guide block 14 is provided with an eccentric positioning strip 15, and the eccentric positioning strip 15 is matched with the eccentric positioning groove 22 of the eccentricity adjusting part 2. When the eccentricity-adjusting bar 15 is fitted into the first slot with the eccentricity-positioning slot 22, the eccentricity is 0, and when the eccentricity-adjusting part 2 is moved rightward by one slot, the eccentricity is a distance "a" of the moved one slot. The trapezoidal scale 16 of the tapered spindle fixing part 1 is exposed by a step equal to a groove distance "a" while moving by a groove distance "a", and the scale can be read quickly. While moving said one slot distance "a" (ensuring that the moving distance "a" is equal to the workpiece one-way eccentricity value), two upper and lower adjusting and fastening blocks 23 of eccentricity adjusting portion 2 fix the positions of two upper and lower sliding blocks 12 and move said one slot distance "a" to the right at the same time. When the eccentricity is adjusted, the tapered spindle fixing part 1 and the eccentricity adjusting part 2 can be fixed using socket head cap screws that are coupled with the fastening screw holes 24 of the eccentricity adjusting part 2 and the screw holes at the center of the sliding blocks 12 of the tapered spindle fixing part 1.

After the two large portions are adjusted and fixed, the coupling screw 33 of the mounting shaft portion 3 is coupled with the coupling screw hole 25 of the eccentricity adjusting portion 2. The double eccentric sleeve 4 to be processed is mounted on the mounting shaft 31 and fixed by flat key connection. The right side of the mounting shaft 31 is a tapered hole, and four open grooves are uniformly distributed on the hole wall. After the double eccentric center is installed, the tensioning block 32 is installed in the tapered hole of the installation shaft 31, and the hexagonal head on the right side of the tensioning block 32 is rotated by a wrench, so that the tensioning connection threaded hole 34 is connected with the tensioning connection thread 321. Meanwhile, the tapered tensioning block 32 expands the tapered tensioning hole 35 to fix the double eccentric sleeves 4, and meanwhile, the tightening force further drives the connecting threads 33 to fasten the mounting shaft portion 3 and the eccentric distance adjusting portion 2, the mounting shaft portion 3 and the double eccentric sleeves 4, and the mounting shaft 31 and the tensioning block 32.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent replacements may be made for some of the technical features of the embodiments described above. All utilize the equivalent structure that the content of the utility model discloses a specification and attached drawing was done, direct or indirect application is in other relevant technical field, all is in the same way the utility model discloses within the patent protection scope.

Claims

1. The utility model provides a two eccentric bushing processingequipment with adjustable, includes toper main shaft fixed part (1), eccentricity adjustment part (2) and installation axle part (3), its characterized in that, toper main shaft fixed part (1) is including toper main shaft (11), guide block (14), eccentric location strip (15) and trapezoidal scale (16), toper main shaft (11) are fixed with the cooperation of lathe main shaft, open sliding tray (13) of two convex fonts on toper main shaft (11) one side circular plane, sliding tray (13) are gone into convex font sliding block (12) from the left and right sides, and be clearance fit with sliding block (12) to can carry out the horizontal slip on sliding tray (13), trapezoidal scale (16) have a plurality of steps, and every step corresponds an eccentricity "an".

2. The adjustable double eccentric bushing machining device according to claim 1, the eccentricity adjusting part (2) comprises a guide groove (21), an eccentricity positioning groove (22), an adjusting fastening block (23), a fastening threaded hole (24) and a connecting threaded hole (25), the guide groove (21) is in clearance fit with the guide block (14), a plurality of grooves are arranged on the eccentric positioning groove (22), the distance between each groove is set as an eccentric distance 'a', the eccentric positioning strip (15) is embedded into the eccentric positioning groove (22) to play a role in positioning the eccentricity, adjust fastening block (23) and set up to respectively two from top to bottom, the interval sets up to blocking sliding block (12), and fastening screw hole (24) are two adjust fastening block (23) center department has a screw hole, uses socket head cap screw to correspond fastening screw hole (24) and sliding block (12) fixedly.

3. The adjustable double eccentric sleeve processing device according to claim 2, wherein the mounting shaft portion (3) comprises a mounting shaft (31), a tensioning block (32), a connecting thread (33), a tensioning connecting threaded hole (34), and a tapered tensioning hole (35), the tensioning connecting thread (321) is arranged on the tensioning block (32), the tensioning block (32) is in interference fit with the tapered tensioning hole (35), four grooves are formed in an outer ring of the tensioning hole (35), and the tensioning connecting threaded hole (34) is connected with the tensioning connecting thread (321) to outwardly expand the four walls of the groove of the tensioning hole (35), so that the double eccentric sleeve to be processed is axially fixed.

4. The adjustable double eccentric bushing machining device according to claim 3, characterized in that the guide block (14), the eccentric positioning bar (15) and the trapezoidal scale (16) are integrally formed with the conical main shaft (11), the sliding groove (13) and the circular plane at one side of the conical main shaft (11).