CN215846147U

CN215846147U - Eccentric cutter rotating mechanism

Info

Publication number: CN215846147U
Application number: CN202023030976.3U
Authority: CN
Inventors: 葛宇; 王平易
Original assignee: Ningxia Yinchuan Dahe CNC Machine Co Ltd
Current assignee: Ningxia Yinchuan Dahe CNC Machine Co Ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2022-02-18
Anticipated expiration: 2030-12-16

Abstract

The utility model provides an eccentric cutter rotating mechanism which comprises a main shaft rotating mechanism (1), an eccentric mechanism (2) and an external shaft sleeve (3), wherein the main shaft rotating mechanism (1) is arranged inside the external shaft sleeve (3), the eccentric mechanism (2) is arranged at the lower end of the main shaft rotating mechanism (1), and the main shaft rotating mechanism (1) can axially rotate relative to the external shaft sleeve (3); the external shaft sleeve (3) comprises a spindle box (31) and a first spindle sleeve (32), the first spindle sleeve (32) is arranged at the lower end of the spindle sleeve, and the first spindle sleeve (32) is an open lower end. The eccentric sleeve structure is adopted, so that the cutter main shaft rotates around the main shaft sleeve, fixed position thread machining is realized, and higher stability is achieved.

Description

Eccentric cutter rotating mechanism

Technical Field

The utility model relates to the field of machine tools, in particular to an eccentric cutter rotating mechanism.

Background

Because the sizes of some parts are too large, the traditional method is to purchase expensive large-scale equipment, and to carry out the processing of drilling, expanding, reaming, tapping and the like, the process is very complicated and complicated, and a plurality of large-scale high-precision equipment needs to be purchased to complete the processing, so the equipment investment is large. In the process of operating the pressure container, due to the occurrence of an accident, individual bolts on a flange surface can be seized to cause the pressure container to be stopped, so that the whole generator set is at a scrapped risk, at the moment, the seized bolts need to be taken out, and screw holes need to be repaired if necessary. The traditional threaded hole machining method is mainly realized by adopting a tapping machine tapping method or a manual tapping method. For large bolt holes made of the pressure container and having high strength and hardness, the machining is difficult, labor and time are wasted, and the precision is very low.

The processing equipment which has a compact structure, is convenient to move and can process the internal thread with a certain diameter range is needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides an eccentric tool rotating mechanism, which aims to solve the problems of high investment and complex and complicated processing process of the traditional internal thread processing equipment in the prior art.

The utility model provides an eccentric tool rotating mechanism which comprises a main shaft rotating mechanism, an eccentric mechanism and an external shaft sleeve, wherein the main shaft rotating mechanism is arranged in the external shaft sleeve; the external shaft sleeve comprises a spindle box and a first spindle sleeve, the first spindle sleeve is arranged at the lower end of the spindle sleeve, and the first spindle sleeve is an open lower end.

As a preferred mode, the main shaft rotating mechanism comprises a main shaft sleeve motor, a gear box, a first bevel gear and a second bevel gear, the worm, worm wheel and second spindle cover, the second spindle cover sets up inside headstock and first spindle cover, second spindle cover and first spindle cover, vertical rotational degree of freedom has between the headstock, the second spindle cover sets up in headstock below and axis coincidence headstock central line, vertical rotational degree of freedom has between second spindle cover and the headstock, the worm wheel sets up in second spindle cover top, the spindle cover motor sets up in the headstock upper end, first bevel gear sets up in the spindle cover motor output, the second bevel gear sets up in worm one end, first bevel gear and second bevel gear mesh perpendicularly, the worm pole portion level sets up inside the headstock, worm helical tooth and worm wheel mesh.

The eccentric cutter rotating mechanism comprises a guide part and an eccentric part, wherein the guide part is fixedly arranged at the lower end of a second main shaft sleeve, the eccentric part is arranged at the bottom of the guide part and movably connected with the guide part, the eccentric part and the guide part are both provided with vertical through holes, the diameter of the vertical through hole of the eccentric part is larger than or equal to that of a flange shaft, the diameter of the vertical through hole of the guide part is larger than that of the vertical through hole of the eccentric part, and the eccentric part can axially move on the guide part vertical to the vertical through hole.

According to the eccentric cutter rotating mechanism, as a preferable mode, the guide part comprises a guide part flange and a guide block, the guide part flange is connected with the lower end of the second spindle sleeve, the guide block is arranged at the lower end of the guide part flange, and a vertical step through hole is formed in the middle of the guide part flange.

The eccentric cutter rotating mechanism provided by the utility model has the advantages that as a preferable mode, the eccentric part comprises an eccentric sleeve, a bent plate, an adjusting screw and a gland, the adjusting screw is fixed on the bent plate through the gland, the bent plate is of an L-shaped structure, one plate surface of the bent plate is arranged on a flange of the guide part, the bent plate is arranged at the lower end of the guide part, the threaded end of the adjusting screw is in threaded connection with the eccentric sleeve, and the middle part of the eccentric sleeve is provided with a vertical stepped hole.

According to the eccentric cutter rotating mechanism, as a preferable mode, a bearing for assisting the first spindle sleeve and the second spindle sleeve to rotate relatively is arranged between the first spindle sleeve and the second spindle sleeve.

The guide block is fixed on the flange, the eccentric sleeve is in sliding fit with the guide block, and the eccentric amount between the center of the eccentric sleeve and the center of the main shaft can be changed by rotating the adjusting screw clockwise or anticlockwise. The eccentric block and the guide block are positioned by the eccentric sleeve under the condition of non-coaxial line. And the rotating shaft is a main shaft, the two shafts are eccentric, and the eccentric shaft rotates around the main shaft to mill threads.

The utility model has the following beneficial effects:

(1) the device can realize the processing of different thread diameters only by adjusting the eccentricity, is convenient to use, and can adjust the thread diameter to be processed according to the requirement;

(2) the screw thread is set by the eccentric distance, so that the number of parts is reduced, the machine type is smaller, and the machine can integrally move;

(3) tapping is realized through revolution and rotation, a cross sliding table is avoided, and the device is more compact and convenient to carry.

Drawings

FIG. 1 is a schematic view of an eccentric tool rotating mechanism;

FIG. 2 is a schematic view of an outer sleeve of an eccentric tool rotating mechanism;

FIG. 3 is a schematic view of a spindle rotating mechanism of an eccentric tool rotating mechanism;

FIG. 4 is a schematic view of an eccentric mechanism of an eccentric tool rotating mechanism;

FIG. 5 is a schematic view of a guide portion of an eccentric tool rotating mechanism;

FIG. 6 is a schematic view of an eccentric portion of an eccentric tool rotating mechanism;

fig. 7 is a schematic view of a gear box of an eccentric tool rotating mechanism.

Reference numerals:

1. a spindle rotating mechanism; 11. a main shaft sleeve motor; 12. a gear case; 13. a first bevel gear; 14. a second bevel gear; 15. a worm; 16. a worm gear; 17. a second main shaft sleeve; 2. an eccentric mechanism; 21. a guide portion; 211. a guide portion flange; 212. a guide block; 22. an eccentric portion; 221. an eccentric sleeve; 222. bending a plate; 223. an adjusting screw; 224. a gland; 3. an outer sleeve; 31. a main spindle box; 311. a main spindle box body; 312. a first side hole; 313. a second side hole; 314. an input aperture; 315. an output aperture; 32. a first spindle cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

As shown in fig. 1, an eccentric tool rotating mechanism includes a main shaft rotating mechanism 1, an eccentric mechanism 2 and an external shaft sleeve 3, wherein the main shaft rotating mechanism 1 is arranged inside the external shaft sleeve 3, the eccentric mechanism 2 is arranged at the lower end of the main shaft rotating mechanism 1, and the main shaft rotating mechanism 1 can axially rotate relative to the external shaft sleeve 3;

as shown in fig. 2, the outer sleeve 3 includes a spindle head 31 and a first spindle sleeve 32, the first spindle sleeve 32 is disposed at a lower end of the spindle sleeve, and the first spindle sleeve 32 is an open lower end.

As shown in fig. 3, the spindle rotation mechanism 1 includes a spindle sleeve motor 11, a gear box 12, a first bevel gear 13, a second bevel gear 14, a worm 15, a worm wheel 16 and a second spindle sleeve 17, the second spindle sleeve 17 is disposed inside a spindle box 31 and a first spindle sleeve 32, the second spindle sleeve 17 has a vertical rotational degree of freedom with the first spindle sleeve 32 and the spindle box 31, the second spindle sleeve 17 is disposed below the spindle box 31 with its axis coinciding with a vertical center line of the spindle box 31, the second spindle sleeve 17 has a vertical rotational degree of freedom with the spindle box 31, the worm wheel 16 is disposed at the top end of the second spindle sleeve 17, the spindle sleeve motor 11 is disposed at the upper end of the spindle box 31, the first bevel gear 13 is disposed at the output end of the spindle sleeve motor 11, the second bevel gear 14 is disposed at one end of the worm 15, the first bevel gear 13 and the second bevel gear 14 are vertically engaged, a rod portion of the worm 15 is horizontally disposed inside the spindle box 31, the worm 15 has helical teeth meshing with a worm wheel 16.

As shown in fig. 4, the eccentric mechanism 2 includes a guide portion 21 and an eccentric portion 22, the guide portion 21 is fixedly disposed at the lower end of the second spindle sleeve 17, the eccentric portion 22 is disposed at the bottom of the guide portion 21 and movably connected to the guide portion 21, the eccentric portion 22 and the guide portion 21 are both provided with vertical through holes, the diameter of the vertical through hole of the eccentric portion 22 is greater than or equal to the diameter of the flange shaft, the diameter of the vertical through hole of the guide portion 21 is greater than the diameter of the vertical through hole of the eccentric portion 22, and the eccentric portion 22 can move on the guide portion 21 in the axial direction perpendicular to the vertical through hole.

As shown in fig. 5, the guide portion 21 includes a guide portion flange 211 and a guide block 212, the guide portion flange 211 is connected to the lower end of the second spindle sleeve 17, the guide block 212 is disposed at the lower end of the guide portion flange 211, and a vertical stepped through hole is disposed in the middle of the guide portion flange 211.

As shown in fig. 6, the eccentric portion 22 includes an eccentric sleeve 221, a bent plate 222, an adjusting screw 223 and a gland 224, the adjusting screw 223 is fixed on the bent plate 222 through the gland 224, the bent plate 222 is an L-shaped structure, one surface of the bent plate 222 is arranged on the guide portion flange 211, the bent plate 222 is arranged at the lower end of the guide portion 21, the threaded end of the adjusting screw 223 is in threaded connection with the eccentric sleeve 221, and the middle portion of the eccentric sleeve 221 is provided with a vertical stepped hole.

A bearing for assisting the first spindle cover 32 and the second spindle cover 17 to rotate relatively is arranged between the first spindle cover 32 and the second spindle cover 17.

As shown in fig. 7, the main spindle box 31 includes a main spindle box body 311, a first side hole 312, a second side hole 313, an input hole 314, and an output hole 315, where the main spindle box body 311 is a hollow box body, the first side hole 312 is disposed on one side surface of the main spindle box body 311, the second side hole 313 is disposed on a side surface of the main spindle box body 311 opposite to the first side hole 312, the output hole 315 is disposed on a bottom surface of the gear box 12, the input hole 314 is disposed opposite to the output hole 315, and the output hole 315, the first side hole 312, and the second side hole 313 are recessed second-order stepped holes; bearings for assisting the rotation of the worm 15 are arranged in the outer stepped holes of the first side hole 312 and the second side hole 313, and a first gland 224 and a second gland 224 are respectively arranged on the outer sides of the first side hole 312 and the second side hole 313 of the worm 15; a first spacer bush and a second spacer bush are arranged between the stepped hole on the outer side of the output hole 315 and the second spindle sleeve 17, the diameter of the first spacer bush is larger than that of the second spacer bush, the diameters of the first spacer bush and the stepped hole on the outer side of the output hole 315 are the same, and the diameter of the contact surface of the second spacer bush and the second spindle sleeve 17 is the same.

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 person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. An eccentric cutter rotary mechanism which characterized in that: the eccentric mechanism comprises a main shaft rotating mechanism (1), an eccentric mechanism (2) and an external shaft sleeve (3), wherein the main shaft rotating mechanism (1) is arranged inside the external shaft sleeve (3), and the eccentric mechanism (2) is arranged at the lower end of the main shaft rotating mechanism (1); the external shaft sleeve (3) comprises a spindle box (31) and a first spindle sleeve (32), the first spindle sleeve (32) is arranged at the lower end of the spindle sleeve, and the first spindle sleeve (32) is an open lower end.

2. An eccentric tool rotating mechanism according to claim 1, wherein: the spindle rotating mechanism (1) comprises a spindle sleeve motor (11), a gear box (12), a first bevel gear (13), a second bevel gear (14), a worm (15), a worm wheel (16) and a second spindle sleeve (17), wherein the second spindle sleeve (17) is arranged inside a spindle box (31) and the first spindle sleeve (32), the second spindle sleeve (17) and the first spindle sleeve (32) have vertical rotating freedom between the spindle box (31), the second spindle sleeve (17) is arranged below the spindle box (31) and has an axis coincident with the central line of the spindle box (31), the second spindle sleeve (17) and the spindle box (31) have vertical rotating freedom between them, the worm wheel (16) is arranged at the top end of the second spindle sleeve (17), the spindle sleeve motor (11) is arranged at the upper end of the spindle box (31), the first bevel gear (13) is arranged at the output end of the main shaft sleeve motor (11), the second bevel gear (14) is arranged at one end of the worm (15), the first bevel gear (13) is vertically meshed with the second bevel gear (14), the rod part of the worm (15) is horizontally arranged inside the main shaft box (31), and the spiral teeth of the worm (15) are meshed with the worm wheel (16).

3. An eccentric tool rotating mechanism according to claim 2, wherein: eccentric mechanism (2) include guide part (21) and eccentric portion (22), guide part (21) fixed set up in second main shaft cover (17) lower extreme, eccentric portion (22) set up in guide part (21) bottom and with guide part (21) swing joint, eccentric portion (22) with guide part (21) all is provided with vertical through-hole, the vertical through-hole diameter more than or equal to flange axle diameter of eccentric portion (22), the vertical through-hole diameter of guide part (21) is greater than the vertical through-hole diameter of eccentric portion (22), eccentric portion (22) can perpendicular vertical through-hole axial displacement on guide part (21).

4. An eccentric tool rotating mechanism according to claim 3, wherein: guide portion (21) include guide portion flange (211) and guide block (212), guide portion flange (211) with second spindle sleeve (17) lower extreme is connected, guide block (212) set up in guide portion flange (211) lower extreme, guide portion flange (211) middle part is provided with vertical ladder through-hole.

5. An eccentric tool rotating mechanism according to claim 4, wherein: eccentric portion (22) are including eccentric cover (221), bent plate (222), adjusting screw (223) and gland (224), adjusting screw (223) pass through gland (224) are fixed on bent plate (222), bent plate (222) are L shape structure, a bent plate (222) face set up in guide part flange (211), bent plate (222) set up guide part (21) lower extreme, adjusting screw (223) threaded end with eccentric cover (221) threaded connection, eccentric cover (221) middle part is provided with vertical shoulder hole.

6. An eccentric tool rotating mechanism according to claim 2, wherein: and a bearing for assisting the first main shaft sleeve (32) and the second main shaft sleeve (17) to rotate relatively is arranged between the first main shaft sleeve (32) and the second main shaft sleeve (17).