CN214770830U

CN214770830U - B-type dividing head

Info

Publication number: CN214770830U
Application number: CN202120488702.4U
Authority: CN
Inventors: 刘玉义; 陈翠龙
Original assignee: Ningbo Yuyi Machinery Equipment Co ltd
Current assignee: Ningbo Yuyi Machinery Equipment Co ltd
Priority date: 2021-03-08
Filing date: 2021-03-08
Publication date: 2021-11-19
Anticipated expiration: 2031-03-08

Abstract

The utility model discloses a B-type dividing head, which comprises a dividing shaft, a supporting seat, a speed change component, an eccentric adjusting seat and a driving component, wherein the surface of the dividing shaft is provided with dividing scales; the supporting seat is rotationally connected with the indexing shaft; the speed changing assembly is connected with the indexing shaft; the eccentric adjusting seat is respectively connected with the speed changing assembly and the supporting seat, and an eccentric sliding groove is formed in the eccentric adjusting seat; the driving component is connected with the eccentric adjusting seat in a sliding way through the eccentric chute and is connected with the speed changing component. The B-type dividing head provided by the utility model drives the dividing head to rotate through the driving component, the adjusting speed is faster, the precision is higher, and the processing efficiency is effectively improved; through the relative position regulation of eccentric spout on the eccentric regulation seat, realize that the eccentric school position of worm gear is rotatory, the measurement accuracy deviation of avoiding wearing and tearing to lead to is too big, problem that life is short, through eccentric regulation, improves the precision, increase of service life. The utility model discloses simple structure, the effect is showing, is suitable for extensive popularization.

Description

B-type dividing head

Technical Field

The utility model relates to a processing apparatus technical field, in particular to, a B type dividing head.

Background

The dividing head is a machine tool accessory which is arranged on a milling machine and used for dividing a workpiece into any equal parts, the workpiece clamped between a tip or a chuck is divided into any angle by using a dividing scale ring, a vernier, a positioning pin, an dividing disc and an exchange gear, the circumference can be divided into any equal parts, and the machine tool is assisted to process various grooves, spur gears, spiral spur gears and the like by using cutters in various shapes.

The existing dividing head is mostly manually adjusted, the speed is slow, the precision is low, the machining efficiency is seriously influenced, and meanwhile, due to the abrasion problem in the use process of the dividing head, the precision of the dividing head is lower and lower along with the increase of the service time, the service life is short, and the cost is increased accordingly.

Aiming at the problems, the index head is designed, and the problems that in the prior art, the adjusting speed is low, the precision is low, the processing efficiency is seriously influenced, the abrasion is serious in the using process, the precision of the index head is gradually reduced along with the increase of the using time, and the service life is short are solved.

SUMMERY OF THE UTILITY MODEL

To the above defect, the utility model provides a technical problem lies in, provides a B type dividing head to solve that the governing speed that prior art exists is slow, the precision is low, seriously influences machining efficiency, and wearing and tearing are serious in the use, and the precision of dividing head is along with service time's increase and lower, problem that life is short.

The utility model provides a B type dividing head, include:

the surface of the indexing shaft is provided with indexing scales for displaying a rotation angle;

the supporting seat is rotatably connected with the indexing shaft;

a speed change assembly connected with the indexing shaft;

the eccentric adjusting seat is respectively connected with the speed changing assembly and the supporting seat, an eccentric sliding groove is formed in the eccentric adjusting seat, and the working precision of the speed changing assembly is adjusted by adjusting the position of the eccentric sliding groove;

the driving assembly is connected with the eccentric adjusting seat in a sliding mode through the eccentric sliding groove and connected with the speed change assembly, and the driving assembly drives the indexing shaft to rotate through the speed change assembly.

Preferably, the speed change assembly includes:

a worm gear connected with the indexing shaft;

and the worm is meshed with the worm wheel and is respectively connected with the eccentric adjusting seat and the driving assembly.

Preferably, the support seat comprises:

the shell is respectively connected with the indexing shaft and the speed change assembly, and is provided with an access hole;

one end of the lower cover plate is provided with a boss connected with the worm wheel, the boss is used for fixing the worm wheel, and the lower cover plate is fixed on the indexing shaft through a fastener;

and the gland is respectively connected with the indexing shaft and the other end of the lower cover plate.

Preferably, the eccentric adjusting seat is provided with two eccentric chutes, and the eccentric chutes are eccentric arc-shaped grooves taking the axis of the worm as the center of circle.

Preferably, the housing is provided with a fixing hole, the worm wheel, the lower cover plate and the gland are arranged in the fixing hole, the indexing shaft penetrates through the fixing hole, and the axes of the fixing hole, the lower cover plate, the gland and the indexing shaft are on the same straight line.

Preferably, the drive assembly comprises:

one end of the fixed seat is connected with the eccentric adjusting seat in a sliding manner, and a through hole is formed in the fixed seat;

the driving part is connected with the other end of the fixing seat, an output shaft of the driving part is connected with the worm through a coupler, and the coupler is arranged in the through hole.

Preferably, one end of the indexing shaft is provided with a groove, a plane thrust bearing is arranged in the groove, and the plane thrust bearing is connected with the supporting seat.

Preferably, the eccentric adjusting seat is rotatably connected with the worm through a bearing, and the indexing shaft is rotatably connected with the housing and the lower cover plate through bearings respectively.

Preferably, the indexing shaft is a hollow shaft.

According to the above technical scheme, the utility model provides a pair of B type dividing head is a dual-purpose dividing head crouches and stands for processing outer hexagonal, quartering spline, inside and outside gear, punch and so on. Compared with the prior art, the dividing head is driven to rotate by the driving assembly, so that the adjusting speed is higher, the precision is higher, and the processing efficiency is effectively improved; through the relative position regulation of eccentric spout on the eccentric regulation seat, realize that the eccentric school position of worm gear is rotatory, the measurement accuracy deviation of avoiding wearing and tearing to lead to is too big, problem that life is short, through eccentric regulation, improves the precision, increase of service life. The utility model provides high rotation accuracy, operation convenient to use, the regulation speed that solution prior art exists is slow, the precision is low, seriously influences machining efficiency, and wearing and tearing are serious in the use, and the precision of dividing head is along with service time's increase and more low, the short problem of life, and simple structure effect is showing, is suitable for extensive popularization.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a B-type index head according to an embodiment of the present invention;

FIG. 2 is a schematic exploded view of a type B index head shown in FIG. 1;

FIG. 3 is a schematic top view of an eccentric adjusting seat of the B-type index head shown in FIG. 1;

FIG. 4 is a schematic top view of the type B index head shown in FIG. 1;

FIG. 5 is a sectional view taken along line A-A of FIG. 4;

FIG. 6 is a schematic structural view of a B-type index head shown in FIG. 1, except for a supporting seat;

fig. 7 is a schematic structural view of the B-type index head shown in fig. 1 after the eccentric adjusting seat is installed.

In FIGS. 1-7:

1. an index shaft; 2. a supporting seat; 3. a speed change assembly; 4. an eccentric adjusting seat; 5. a drive assembly; 6. a planar thrust bearing; 21. a housing; 22. a lower cover plate; 23. a gland; 24. a seal member; 25. a fastener; 31. a worm gear; 32. a worm; 41. an eccentric chute; 51. a fixed seat; 52. a drive member; 53. a coupling; 211. an access hole; 212. a fixing hole; 221. a boss; 511. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 to fig. 7, a description will now be given of an embodiment of a B-type index head according to the present invention. The B-type dividing head comprises a dividing shaft 1, a supporting seat 2, a speed changing assembly 3, an eccentric adjusting seat 4 and a driving assembly 5, wherein the surface of the dividing shaft 1 is provided with dividing scales for displaying a rotating angle; the supporting seat 2 is rotationally connected with the indexing shaft 1; the speed changing assembly 3 is connected with the indexing shaft 1; the eccentric adjusting seat 4 is respectively connected with the speed changing assembly 3 and the supporting seat 2, an eccentric sliding groove 41 is arranged on the eccentric adjusting seat 4, and the working precision of the speed changing assembly 3 is adjusted by adjusting the position of the eccentric sliding groove 41; the driving assembly 5 is connected with the eccentric adjusting seat 4 in a sliding way through the eccentric chute 41 and is connected with the speed changing assembly 3, and the driving assembly 5 drives the indexing shaft 1 to rotate through the speed changing assembly 3.

Speed change unit 3 can be worm wheel 31 worm 32 combination, drive assembly 5 provides drive power, drive speed change unit 3 motion, speed change unit 3 drive dividing shaft 1 rotates certain angle, through observing the size that the turned angle was observed to the dividing scale registration on the dividing shaft 1, supporting seat 2 mainly plays the support fixed action, relative position between each part in the speed change unit 3 is changed through the relative position of adjusting eccentric spout 41 and drive assembly 5, thereby realize the control to speed change unit 3 precision, avoid wearing and tearing to the influence of precision, guarantee increase of service life when measuring accuracy.

In the present embodiment, the speed change assembly 3 includes a worm wheel 31 and a worm 32, wherein the worm wheel 31 is connected with the index shaft 1; the worm 32 is engaged with the worm wheel 31 and is respectively connected with the eccentric adjusting seat 4 and the driving assembly 5. The worm wheel 31 is positioned and rotated, the worm 32 is eccentrically aligned and rotated, the indexing precision can reach 40 arc seconds, numerical control indexing can be arbitrarily indexed, the speed is high, and the precision is high. The driving assembly 5 drives the worm 32 to rotate, the worm wheel 31 meshed with the worm 32 rotates along with the worm, and then the indexing shaft 1 connected with the worm wheel 31 is driven to rotate, and the required position is achieved more effectively.

The B-type dividing head is a horizontal and vertical dual-purpose dividing head and is used for processing outer hexagons, quartering splines, inner and outer gears, punching and the like, compared with the prior art, the B-type dividing head has the advantages that the dividing shaft 1 is driven to rotate by the driving assembly 5, the adjusting speed is higher, the precision is higher, and the processing efficiency is effectively improved; through the relative position regulation of eccentric spout 41 on the eccentric adjustment seat 4, realize that the eccentric school of worm wheel 31 worm 32 is positioned rotatoryly, avoid wearing and tearing to lead to the measurement accuracy deviation too big, the short problem of life, through eccentric regulation, improve the precision, increase of service life. The utility model provides high rotation accuracy, operation convenient to use compares greatly increased with current equipment life, and simple structure effect is showing, is suitable for extensive popularization.

Example 2

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 7 together, the structure of the B-type index head provided in this embodiment is basically the same as that of embodiment 1, and the difference lies in that the supporting seat 2 includes a housing 21, a lower cover plate 22 and a gland 23, wherein the housing 21 is connected to the index shaft 1 and the speed change assembly 3 respectively, the housing 21 is provided with an access opening 211, the access opening 211 is provided with a sealing element 24, the sealing element 24 is detachably connected to the housing 21, the inside of the housing 21 can be maintained by removing the sealing element 24, which is convenient and fast, and repeated assembly and disassembly is avoided; one end of the lower cover plate 22 is provided with a boss 221 connected with the worm wheel 31, the boss 221 is used for fixing the worm wheel 31, the lower cover plate 22 is fixed on the indexing shaft 1 through a fastener 25, and the fastener 25 can be a round nut; the gland 23 is respectively connected with the other ends of the indexing shaft 1 and the lower cover plate 22, and the gland 23 and the lower cover plate 22 can be fixedly connected through a screw rod.

In this embodiment, the eccentric adjusting seat 4 is provided with two eccentric sliding grooves 41, and the eccentric sliding grooves 41 are eccentric arc-shaped grooves with the axis of the worm 32 as the center. The two eccentric runners 41 are arranged symmetrically around the center of the circle. The position of the fixed point between the eccentric adjusting seat 4 and the fixed seat 51 on the eccentric sliding groove 41 is adjusted, the fine adjustment of the position of the worm 32 is realized, and the transmission precision of the speed change component 3 is improved. It is within the scope of the present document to achieve the above-mentioned performance effect of the eccentric adjustment seat 4.

In this embodiment, the housing 21 is provided with a fixing hole 212, the worm wheel 31, the lower cover plate 22 and the gland 23 are disposed in the fixing hole 212, the index shaft 1 penetrates through the fixing hole 212, and the axes of the fixing hole 212, the lower cover plate 22, the gland 23 and the index shaft 1 are on the same straight line, so that the rotation precision of the index shaft 1 is effectively ensured, and the loss of torque caused by deflection is avoided. The housing 21 is further provided with a coupling hole through which the worm 32 is inserted into the fixing hole 212 and engaged with the worm wheel 31 in the fixing hole 212.

In this embodiment, the driving assembly 5 includes a fixing seat 51 and a driving member 52, wherein one end of the fixing seat 51 is slidably connected to the eccentric adjusting seat 4 through a bolt, and a through hole 511 is formed in the fixing seat 51; the other end of the fixed seat 51 is connected with the driving element 52, the output shaft of the driving element 52 is connected with the worm 32 through the coupling 53, and the coupling 53 is arranged in the through hole 511. The driving part 52 can be a motor which drives the worm 32 to rotate, and the fixing seat 51 can be a flange which is used for protecting the connection between the driving part 52 and the worm 32, avoiding the damage caused by impact due to exposure and ensuring the service life.

In this embodiment, a groove is formed at one end of the index shaft 1, a flat thrust bearing 6 is arranged in the groove, the flat thrust bearing 6 is connected with the support base 2, and the flat thrust bearing 6 and the axis of the fixing hole 212 are on the same straight line. The plane thrust bearing 6 is arranged between the indexing shaft 1 and the supporting seat 2, so that friction between the indexing shaft 1 and the supporting seat 2 is reduced, the rotation process of the indexing shaft 1 is smoother, and the rotation precision of the indexing shaft 1 is effectively improved. It should be understood that the terms "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the indexing shaft 1, the supporting seat 2, the shifting unit 3, the eccentric adjusting seat 4, the driving unit 5 and the components thereof must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the present invention.

In this embodiment, the eccentric adjusting seat 4 is rotatably connected with the worm 32 through a bearing, the indexing shaft 1 is rotatably connected with the housing 21 and the lower cover plate 22 through bearings, and the bearings can effectively reduce friction between the eccentric adjusting seat 4 and the worm 32, between the indexing shaft 1 and the housing 21, and between the indexing shaft 1 and the lower cover plate 22, thereby ensuring the transmission efficiency of torque and improving the rotation precision of the indexing head. The indexing shaft 1 is a hollow shaft, so that the indexing shaft 1 has smaller mass on the premise of ensuring the basic functions of the indexing shaft 1, the worm wheel 31 provides small force to rotate the indexing shaft 1, the abrasion between the worm wheel 31 and the worm 32 is reduced, and the service life is prolonged.

The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. Details not described in the embodiments of the present invention belong to the prior art known to those skilled in the art.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A B-index head, comprising:

the surface of the indexing shaft (1) is provided with indexing scales for displaying a rotation angle;

the supporting seat (2) is rotationally connected with the indexing shaft (1);

a speed change assembly (3) connected with the indexing shaft (1);

the eccentric adjusting seat (4) is respectively connected with the speed changing assembly (3) and the supporting seat (2), an eccentric sliding groove (41) is formed in the eccentric adjusting seat (4), and the working precision of the speed changing assembly (3) is adjusted by adjusting the position of the eccentric sliding groove (41);

the driving assembly (5) is connected with the eccentric adjusting seat (4) in a sliding mode through the eccentric sliding groove (41) and connected with the speed changing assembly (3), and the driving assembly (5) drives the indexing shaft (1) to rotate through the speed changing assembly (3).

2. A B-index head according to claim 1, characterized in that the gearshift assembly (3) comprises:

a worm wheel (31) connected to the index shaft (1);

and the worm (32) is meshed with the worm wheel (31) and is respectively connected with the eccentric adjusting seat (4) and the driving component (5).

3. A B-index head according to claim 2, characterized in that the support (2) comprises:

the outer shell (21) is respectively connected with the indexing shaft (1) and the variable speed assembly (3), an access hole (211) is formed in the outer shell (21), and a sealing element (24) is arranged on the access hole (211);

one end of the lower cover plate (22) is provided with a boss (221) connected with the worm wheel (31), the boss (221) is used for fixing the worm wheel (31), and the lower cover plate (22) is fixed on the indexing shaft (1) through a fastener (25);

and the gland (23) is respectively connected with the other ends of the indexing shaft (1) and the lower cover plate (22).

4. A B-type index head according to claim 3, wherein two eccentric runners (41) are provided on the eccentric adjusting seat (4), and the eccentric runners (41) are eccentric arc-shaped grooves centered on the axis of the worm (32).

5. The B-type index head according to claim 3, wherein a fixing hole (212) is formed in the housing (21), the worm wheel (31), the lower cover plate (22) and the gland (23) are disposed in the fixing hole (212), the index shaft (1) penetrates through the fixing hole (212), and the axial centers of the fixing hole (212), the lower cover plate (22), the gland (23) and the index shaft (1) are on the same straight line.

6. A type B index head according to claim 4 wherein the drive assembly (5) comprises:

one end of the fixed seat (51) is connected with the eccentric adjusting seat (4) in a sliding manner, and a through hole (511) is formed in the fixed seat (51);

driving piece (52), with fixing base (51) other end is connected, the output shaft of driving piece (52) pass through shaft coupling (53) with worm (32) are connected, shaft coupling (53) set up in through-hole (511).

7. A B-index head according to claim 1, characterized in that one end of the index shaft (1) is provided with a recess, in which recess a flat thrust bearing (6) is arranged, said flat thrust bearing (6) being connected to the support base (2).

8. A type B index head according to claim 6, characterized in that the eccentric adjustment seat (4) is rotatably connected with the worm (32) by a bearing, and the index shaft (1) is rotatably connected with the housing (21) and the lower cover plate (22) by a bearing, respectively.

9. A B-index head according to any of claims 1 to 8, characterized in that the index shaft (1) is a hollow shaft.