CN113070736A

CN113070736A - Four-axis dividing head

Info

Publication number: CN113070736A
Application number: CN202110250341.4A
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: 2021-07-06

Abstract

The invention provides a four-axis index head, which belongs to the technical field of processing instruments and comprises an index head main body, a worm wheel, a worm assembly, a driving assembly and a worm adjusting piece, wherein the worm wheel is arranged in the index head main body and is rotationally connected with the index head main body; the worm assembly is arranged in the dividing head main body and is matched with the worm wheel, and the worm assembly is connected with the dividing head main body in a sliding manner; the driving assembly is used for driving the worm assembly; the worm adjusting piece is arranged in the dividing head main body and is in contact with the worm assembly, and the worm adjusting piece is used for pushing the worm assembly to move when the worm assembly is abraded. According to the four-axis index head provided by the invention, the worn worm assembly is pushed by the worm adjusting piece, so that the worm assembly is always meshed with the worm wheel, the intermittent compensation is achieved, and the defect of self-locking function of the worm wheel and the worm assembly is overcome.

Description

Four-axis dividing head

Technical Field

The invention belongs to the technical field of machining instruments, and particularly relates to a four-axis index 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 comprises a shell, a worm wheel arranged in the shell and a worm meshed with the worm wheel, wherein the worm wheel and the worm have a self-locking function, but after the worm wheel and the worm are used for a certain time, the worm wheel and the worm can be abraded, so that the worm wheel and the worm lose the self-locking function, the dividing head cannot meet the precision requirement, and the working efficiency of the dividing head is influenced by manual adjustment or repair.

Disclosure of Invention

The invention aims to provide a four-axis index head, and aims to solve the technical problem that in the prior art, when a worm wheel and a worm are worn, the self-locking function is lost, and the normal use of the index head is influenced.

In order to achieve the purpose, the invention adopts the technical scheme that: there is provided a four-axis index head comprising:

a index head body;

the worm wheel is arranged in the dividing head main body and is rotationally connected with the dividing head main body;

the worm assembly is arranged in the dividing head main body and is matched with the worm wheel, and the worm assembly is connected with the dividing head main body in a sliding manner;

the driving assembly is used for driving the worm assembly; and

and the worm adjusting piece is arranged in the dividing head main body, is in contact with the worm assembly and is used for pushing the worm assembly to move when the worm assembly is abraded.

Preferably, the worm adjustment comprises:

the push plate is positioned on one side of the worm assembly and is abutted against the worm assembly; and

and one end of the elastic adjusting piece is connected with the dividing head main body, and the other end of the elastic adjusting piece is connected with the push plate.

Preferably, the elastic adjustment member includes:

one end of the adjusting column extends into the dividing head main body, the other end of the adjusting column is connected with the push plate, and the end of the adjusting column is provided with a groove which is matched with the limit pin to limit the moving path of the push plate; and

and the pressure spring is sleeved on the adjusting column, one end of the pressure spring is abutted to the dividing head main body, and the other end of the pressure spring is abutted to the push plate.

Preferably, the worm assembly comprises:

one end of the polished rod is connected with the driving assembly;

the worm main body is sleeved on the polish rod; and

and the adjusting piece is sleeved on the polished rod and used for limiting and fixing the worm main body and is in sliding connection with the inner wall of the dividing head main body.

Preferably, a slide block is arranged on the inner wall of the dividing head main body; and the adjusting piece is provided with a sliding groove matched with the sliding block.

Preferably, the worm wheel is rotatably connected with the index head main body through a worm wheel limit piece.

Preferably, the index head body comprises:

the center position in the dividing head shell is provided with an accommodating groove for accommodating the limiting piece, the axial lead of the accommodating groove is superposed with the axial lead of the worm wheel, and an opening end is arranged on any end face of the dividing head shell; and

and the dividing head disc covers the opening end of the dividing head shell and is rotationally connected with the dividing head shell.

Preferably, the drive assembly is a motor.

The four-axis index head provided by the invention has the beneficial effects that: compared with the prior art, the four-axis index head provided by the invention has the advantages that the worn worm component is pushed by the worm adjusting piece, so that the worm component is always meshed with the worm wheel, the intermittent compensation is realized, and the defect of self-locking function of the worm wheel and the worm component is overcome. The rotary precision of the dividing head is improved. Manual adjustment and repair are not needed, labor cost is saved, and operation and use are easier. The four-axis dividing head also has the characteristic of long service life.

Drawings

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

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

fig. 2 is a schematic perspective view of a four-axis index head according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a four-axis index head provided in an embodiment of the present invention, except for a disc of the index head;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic structural view of a four-axis index head according to an embodiment of the present invention, in which a index head disc and an index head housing are in a separated state;

fig. 6 is a schematic structural view of a four-axis index head according to an embodiment of the present invention, in which an internal structure and an index head housing are in a separated state;

fig. 7 is a schematic view of a connection relationship between a worm adjusting piece and a worm assembly in a four-axis index head according to an embodiment of the present invention.

In the figure: 1. a index head body; 11. a dividing head housing; 12. a dividing head disk; 2. a worm gear; 3. a worm assembly; 31. a polish rod; 32. a worm body; 33. an adjustment member; 331. an adjusting sleeve; 332. a worm sleeve; 333. locking and capping; 334. a first bearing; 4. a drive assembly; 5. a worm adjustment member; 51. pushing the plate; 52. an elastic adjustment member; 521. an adjustment column; 5211. a groove; 522. a pressure spring; 523. a limit pin; 6. a slider; 7. and a limiting member.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 7, a four-axis index head according to the present invention will now be described. The four-axis dividing head comprises a dividing head main body 1, a worm wheel 2, a worm component 3, a driving component 4 and a worm adjusting piece 5, wherein the worm wheel 2 is arranged in the dividing head main body 1 and is rotationally connected with the dividing head main body 1; the worm component 3 is arranged in the dividing head main body 1 and is matched with the worm wheel 2, and the worm component 3 is connected with the dividing head main body 1 in a sliding manner; the driving assembly 4 is used for driving the worm assembly 3; the worm adjusting piece 5 is arranged in the dividing head main body 1 and is in contact with the worm assembly 3, and is used for pushing the worm assembly 3 to move when the worm assembly 3 is abraded.

The operation of 3 operations of drive assembly 4 drive worm subassembly, worm subassembly 3 drives the worm wheel 2 operation of meshing with it, uses after the certain period, and worm subassembly 3 produces wearing and tearing with worm wheel 2, and worm subassembly 3 and worm wheel 2 are no longer strict meshing, and worm adjusting part 5 promotes worm subassembly 3 and removes a section distance in dividing head main part 1 this moment, makes worm subassembly 3 mesh with worm wheel 2 again.

Compared with the prior art, the four-axis index head provided by the invention has the advantages that the worn worm component 3 is pushed by the worm adjusting piece 5, so that the worm component 3 is always meshed with the worm wheel 2, the intermittent compensation is realized, and the defect of self-locking function of the worm wheel 2 and the worm component 3 is overcome. The rotary precision of the dividing head is improved. The manual adjustment and repair are not needed, the labor cost is saved, the working efficiency of the dividing head is improved, and the operation and the use are easier. The four-axis dividing head also has the characteristic of long service life.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 7 together, the worm adjusting member 5 includes a push plate 51 and an elastic adjusting member 52, the push plate 51 is located at one side of the worm assembly 3 and abuts against the worm assembly 3; one end of the elastic adjusting piece 52 is connected with the index head main body 1, and the other end is connected with the push plate 51. The arrangement of the push plate 51 improves the contact area of the worm adjusting piece 5 and the worm assembly 3, and facilitates the movement of the worm assembly 3. The elastic adjusting member 52 has a certain elasticity, and the elastic adjusting member 52 can push the worn worm assembly 3 to move until the worm assembly 3 is engaged with the worm wheel 2 again. The process that the elastic adjusting piece 52 pushes the worm assembly 3 to move does not need manual participation, and labor cost is effectively saved.

In this embodiment, the elastic adjusting element 52 includes an adjusting column 521 and a pressure spring 522, one end of the adjusting column 521 extends into the index head body 1, the other end is connected with the push plate 51, and the end is provided with a groove 5211 for limiting the moving path of the push plate 51 by matching with the limit pin 523; the pressure spring 522 is sleeved on the adjusting column 521, one end of the pressure spring 522 is abutted against the index head main body 1, and the other end is abutted against the push plate 51.

When the worm assembly 3 is worn, the worm assembly 3 is not strictly meshed with the worm wheel 2 any more, at the moment, the stress of the pressure spring 522 is changed, the pressure spring 522 pushes the push plate 51 to move, the worm assembly 3 is further moved, and the worm assembly 3 and the worm wheel 2 are enabled to continuously keep a meshed state.

The pressure spring 522 is sleeved on the adjusting column 521, so that the deformation direction of the pressure spring 522 is limited, and the utilization efficiency of the deformation force of the pressure spring 522 is improved.

One end of the adjusting column 521 is provided with a groove 5211; the push plate 51 is provided with a first groove or a first through hole for inserting the groove 5211 of the adjusting column 521; the push plate 51 is also provided with a second through hole communicated with the first groove or the first through hole; during installation, the pressure spring 522 is sleeved on the adjusting column 521, the adjusting column 521 is fixedly connected with the dividing head main body 1, one end, provided with the groove 5211, of the adjusting column 521 is inserted into the first groove or the first through hole, the limit nail 523 is installed in the second through hole, and the limit nail 5211 is inserted into the groove 5211. The moving distance of the push plate 51 is limited by the cooperation of the limit pins 523 and the grooves 5211.

In this embodiment, the first groove or the first through hole is disposed at the center of the push plate 51, so that the push plate 51 is uniformly stressed as a whole, and the worm assembly 3 is uniformly stressed.

As a specific implementation manner of the embodiment of the present invention, the elastic adjusting member 52 includes an adjusting column 521 and a pressure spring 522, one end of the adjusting column 521 is connected to the pressure spring 522, and the other end of the adjusting column 521 is provided with a groove 5211 and is connected to the push plate 51; one end of the pressure spring 522 is connected with the adjusting column 521, and the other end is connected with the index head main body 1. In the present embodiment, the index head body 1 is provided with a receiving groove for receiving the pressure spring 522. The provision of the receiving groove defines a moving path of the pressure spring 522. When the worm assembly 3 is worn, the pressure spring 522 is deformed, the push plate 51 is pushed to move by the adjusting column 521, and the movement of the push plate 51 drives the worm assembly 3 to move, so that the worm assembly 3 is reengaged with the worm wheel 2.

Note that the pressure spring 522 is always in a compressed state.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to fig. 7, the worm assembly 3 includes a polish rod 31, a worm body 32 and an adjusting member 33, one end of the polish rod 31 is connected to the driving assembly 4; the worm body 32 is sleeved on the polish rod 31; the adjusting piece 33 is sleeved on the polish rod 31 and used for limiting and fixing the worm main body 32, and the adjusting piece 33 is connected with the inner wall of the dividing head main body 1 in a sliding mode.

The adjusting part 33 comprises an adjusting sleeve 331, a worm sleeve 332, a locking nut 333 and a first bearing 334, wherein the first bearing 334 is sleeved on the polish rod 31 and is positioned at one end of the worm main body 32; the worm sleeve 332 is sleeved on the polish rod 31 and is located at one end of the first bearing 334, which is far away from the worm main body 32; the adjusting sleeve 331 is sleeved on the worm sleeve 332 and is in sliding connection with the inner wall of the dividing head main body 1; two locking and combining caps 333 are provided, each locking and combining cap 333 is respectively sleeved on the worm sleeve 332 and is respectively positioned at one end of the adjusting sleeve 331, and the locking and combining caps 333 are used for limiting and fixing the worm main body 32 and the adjusting sleeve 331.

In the present embodiment, two sets of the adjusting members 33 are provided, and each of the adjusting members 33 is located at one end of the worm main body 32.

In the embodiment, the inner wall of the dividing head main body 1 is provided with a slide block 6; the adjusting piece 33 is provided with a sliding groove matched with the sliding block 6. Specifically, the inner wall of the dividing head main body 1 is provided with a slide block 6, and an adjusting sleeve 331 in the adjusting piece 33 is provided with a sliding groove adapted to the slide block 6. And the adjusting piece 33 is connected with the sliding block 6 in a sliding way, the direction of the sliding groove is perpendicular to the central axis of the worm main body 32.

As a specific implementation manner of the embodiment of the present invention, the driving assembly 4 is a motor, and the motor is in transmission connection with the polished rod 31 through a coupler. The motor is a stepping servo motor.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 7 together, the worm wheel 2 is rotatably connected to the index head body 1 through a limiting member 7. Specifically, the index head main body 1 comprises an index head shell 11 and an index head disc 12, wherein an accommodating groove for accommodating the limiting piece 7 is arranged at the center position in the index head shell 11, the axial line of the accommodating groove is overlapped with the axial line of the worm wheel 2, and an opening end is arranged on any end face of the index head shell 11; the index head disc 12 covers the open end of the index head housing 11 and is rotatably connected to the index head housing 11. The locating part 7 comprises a bearing locating shaft arranged in the containing groove, a second bearing sleeved on the bearing locating shaft and a locking cap used for fixing. The dividing head main body 1 is provided with a hydraulic brake. The index head disc 12 is positioned with the index head shell 11 up and down through the limiting piece 7.

Be equipped with a plurality of groups supporting component on dividing head main part 1, supporting component includes that one end is connected with dividing head main part 1, and the other end is the support column of link to and the support frame that the link of support column is connected. The supporting component is arranged to play a role in supporting the metal plate of the shield on the dividing head.

The lead screw fixed plate is installed on dividing head main part 1, and is connected with dividing head main part 1 through the screw rod structure. The screw rod fixing plate is matched with the base screw rod for use and is driven to travel by the screw rod.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A four-axis index head, comprising:

a index head body (1);

the worm wheel (2) is arranged in the dividing head main body (1) and is rotationally connected with the dividing head main body (1);

the worm component (3) is arranged in the dividing head main body (1) and is matched with the worm wheel (2), and the worm component (3) is connected with the dividing head main body (1) in a sliding mode;

a drive assembly (4) for driving the worm assembly (3); and

the worm adjusting piece (5) is arranged in the dividing head main body (1), is in contact with the worm assembly (3) and is used for pushing the worm assembly (3) to move when the worm assembly (3) is abraded.

2. Four-axis index head, as claimed in claim 1, characterized in that said worm adjustment (5) comprises:

the push plate (51) is positioned on one side of the worm assembly (3) and is abutted against the worm assembly (3); and

and one end of the elastic adjusting piece (52) is connected with the dividing head main body (1), and the other end of the elastic adjusting piece is connected with the push plate (51).

3. Four-axis indexing head according to claim 2, characterized in that said elastic adjustment member (52) comprises:

one end of the adjusting column (521) extends into the dividing head main body (1), the other end of the adjusting column is connected with the push plate (51), and the end of the adjusting column is provided with a groove (5211) which is matched with the limit nail (523) to limit the moving path of the push plate (51); and

and the pressure spring (522) is sleeved on the adjusting column (521), one end of the pressure spring (522) is abutted to the dividing head main body (1), and the other end of the pressure spring is abutted to the push plate (51).

4. A four-axis index head as claimed in claim 3, characterized in that said worm assembly (3) comprises:

a polish rod (31) with one end connected with the driving component (4);

the worm body (32) is sleeved on the polish rod (31); and

and the adjusting piece (33) is sleeved on the polished rod (31) and used for limiting and fixing the worm main body (32) and is in sliding connection with the inner wall of the dividing head main body (1).

5. The four-axis index head of claim 4, wherein: a sliding block (6) is arranged on the inner wall of the dividing head main body (1); the adjusting piece (33) is provided with a sliding groove matched with the sliding block (6).

6. The four-axis index head of claim 4, wherein: the worm wheel (2) is rotatably connected with the dividing head main body (1) through a worm wheel limiting piece (7).

7. The four-axis index head of claim 6, wherein: the index head body (1) comprises:

the dividing head comprises a dividing head shell (11), wherein an accommodating groove used for accommodating the limiting piece (7) is formed in the center of the inside of the dividing head shell, the axis of the accommodating groove is overlapped with the axis of the worm wheel (2), and an opening end is formed in any end face of the dividing head shell (11); and

and the dividing head disc (12) covers the opening end of the dividing head shell (11) and is in rotary connection with the dividing head shell (11).

8. The four-axis index head of claim 7, wherein: the driving component (4) is a motor.