阅读说明：本技术 便捷式分度头 (Portable dividing head ) 是由 高宏扬 朱庆良 于 2019-09-20 设计创作，主要内容包括：本发明涉及用于将工件分成任意等份角度的机床辅助装置的技术领域,特别是涉及一种便捷式分度头,其结构简单,操作方便,能够有效降低分度差错率；包括手摇装置和三爪卡盘；还包括箱体机构和锁紧机构,所述手摇机构与箱体机构的蜗杆相连接,所述箱体机构与锁紧机构相连接,所述锁紧机构为可调结构,用于调节箱体机构的锁紧和运动；所述三爪卡盘机构与箱体的主轴相连接,所述箱体机构包括分度盘、外壳、主轴、蜗轮、轴承支座、蜗杆,其中分度盘固定安装在外壳的外侧,外壳内侧固定有轴承支座,轴承支座通过轴承与蜗杆相连接,主轴和蜗轮通过销连接,蜗轮上的齿轮与蜗杆相啮合。(The invention relates to the technical field of machine tool auxiliary devices for dividing workpieces into any equal angles, in particular to a portable dividing head which is simple in structure and convenient to operate and can effectively reduce dividing error rate; comprises a hand-operated device and a three-jaw chuck; the hand-operated mechanism is connected with a worm of the box body mechanism, the box body mechanism is connected with the locking mechanism, and the locking mechanism is an adjustable structure and used for adjusting locking and movement of the box body mechanism; the three-jaw chuck mechanism is connected with a main shaft of the box body, the box body mechanism comprises an index plate, a shell, a main shaft, a worm wheel, a bearing support and a worm, wherein the index plate is fixedly arranged on the outer side of the shell, the bearing support is fixedly arranged on the inner side of the shell and is connected with the worm through a bearing, the main shaft is connected with the worm wheel through a pin, and a gear on the worm wheel is meshed with the worm.)

1. A portable dividing head comprises a hand-operated device and a three-jaw chuck; the device is characterized by further comprising a box body mechanism and a locking mechanism, wherein the hand-operated mechanism is connected with a worm (11) of the box body mechanism, the box body mechanism is connected with the locking mechanism, and the locking mechanism is of an adjustable structure and used for adjusting the locking and the movement of the worm (11) of the box body mechanism; the three-jaw chuck mechanism is connected with a main shaft (5) of a box body mechanism, the box body mechanism comprises an index plate (3), a shell (4), the main shaft (5), a worm wheel (6), a bearing support (10) and a worm (11), wherein the index plate (3) is installed on the outer side of the shell (4), the bearing support (10) is fixed on the inner side of the shell (4), the bearing support (10) is connected with the worm (11) through a bearing, the main shaft (5) and the worm wheel (6) are connected through a pin, and a gear on the worm wheel (6) is meshed with the worm (11).

2. The portable index head according to claim 1, wherein said hand-operated mechanism is connected to the worm (11) of the case mechanism by means of a key.

3. The portable index head of claim 2, wherein the hand-operated mechanism comprises a hand crank (1) and a hand disc (2), and the hand crank (1) is fixedly connected with the hand disc (2).

4. The portable index head of claim 3, wherein the number of index heads is 36 equal parts.

5. The portable index head of claim 4, wherein said locking mechanism comprises a locking head (8), a locking rod (9) and a locking block (7); the locking head (8) is connected with the locking rod (9), the locking rod (9) is connected with the locking block (7), and the locking rod (9) of the locking mechanism is connected with the box body mechanism through a through hole in the shell (4).

6. The portable index head according to claim 5, wherein said housing means is threadedly connected to a locking lever (9) of the locking means, and said three-jaw chuck means is threadedly connected to a spindle (5) of the housing means.

Technical Field

The invention relates to the technical field of machine tool auxiliary devices for dividing workpieces into any equal angles, in particular to a portable dividing head.

Background

In view of the fact that the fixed number of a traditional dividing head is generally 40 and is mainly used for milling prime number gears and ratchets, along with the development of modern equipment, parts are often machined by a hobbing machine and a gear shaping machine, the main function of the dividing head is changed into plane milling parts, the planes are mostly multiples of 2 and 3 nowadays, the dividing head with the fixed number of 40 causes unnecessary troubles for workers to machine other parts, the scales cannot be divided equally, calculation is convenient for the workers, the risk of errors of jacks is reduced, and the weight of the dividing head is reduced, so that the current situation that a convenient dividing head is designed is changed.

Disclosure of Invention

In order to solve the technical problems, the invention provides the convenient dividing head which is simple in structure, convenient to operate and capable of reducing the dividing error rate.

In order to realize the purpose, the invention is realized according to the following technical scheme:

the invention provides a portable dividing head, which comprises a hand-operated device and a three-jaw chuck; the hand-operated mechanism is connected with a worm of the box body mechanism, the box body mechanism is connected with the locking mechanism, and the locking mechanism is an adjustable structure and used for adjusting the locking and movement of the worm of the box body mechanism; the three-jaw chuck mechanism is connected with a main shaft of the box body mechanism, the box body mechanism comprises an index plate, a shell, a main shaft, a worm wheel, a bearing support and a worm, wherein the index plate is fixedly arranged on the outer side of the shell, the bearing support is fixedly arranged on the inner side of the shell and is connected with the worm through a bearing, the main shaft is connected with the worm wheel through a pin, and a gear on the worm wheel is meshed with the worm.

In one possible embodiment, the hand-operated mechanism is connected to the worm of the housing mechanism by a key.

In a possible scheme, the hand-operated mechanism comprises a hand crank and a hand-operated disc, and the hand crank is fixedly connected with the hand-operated disc.

In one possible scheme, the number of the dividing heads is 36 equal parts.

In one possible scheme, the locking mechanism comprises a locking head, a locking rod and a locking block; the locking head is connected with the locking rod, the locking rod is connected with the locking block, the box body mechanism is connected with the locking rod of the locking mechanism, and the locking rod of the locking mechanism is connected with the box body mechanism through the through hole in the shell.

In one possible scheme, the box body mechanism is connected with a locking rod of the locking mechanism through threads, and the three-jaw chuck mechanism is connected with a main shaft of the box body through threads.

Compared with the prior art, the invention has the beneficial effects that: according to the indexing mechanism, the indexing head of the box body mechanism is adopted, the worm gear and worm work principle is utilized, the hand crank is rotated, the hand crank is driven to do circular motion, the hand crank is connected with the worm key to do circular motion, the indexing disc is driven to rotate and is adjusted to a required reading, the worm is driven to drive the main shaft to move, the main shaft is locked by clockwise rotating the locking head, the worm cannot rotate, the reading of the indexing disc is determined, if the reading needs to be changed, the locking head needs to be rotated anticlockwise, the main shaft is loosened, and the hand cranking device is operated again to enable the indexing head to rotate to a required number of degrees for reading; the method is convenient for workers to process parts, reduces the risk of error proneness of the jacks and lightens the weight of the jacks. The device has simple structure and convenient operation, reduces the indexing error rate and improves the indexing accuracy.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

fig. 2 is a schematic cross-sectional view of another aspect of the present invention.

Reference numerals: 1-a hand crank; 2-hand disc shaking; 3-an index plate; 4-a housing; 5-a main shaft; 6-a worm gear; 7-a locking block; 8-a locking head; 9-a locking lever; 10-a bearing support; 11-a worm; 12-three-jaw chuck.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "radial," "axial," "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 2, the portable index head of the present invention comprises a hand-operated device and a three-jaw chuck; the device is characterized by further comprising a box body mechanism and a locking mechanism, wherein the hand-operated mechanism is connected with the worm 11 of the box body mechanism, the box body mechanism is connected with the locking mechanism, and the locking mechanism is of an adjustable structure and used for adjusting the locking and the movement of the worm 11 of the box body mechanism; the three-jaw chuck mechanism is connected with a main shaft 5 of a box body, the box body mechanism comprises an index plate 3, a shell 4, a main shaft 5, a worm wheel 6, a bearing support 10 and a worm 11, wherein the index plate 3 is fixedly arranged on the outer side of the shell 4, the bearing support 10 is fixed on the inner side of the shell 4, the bearing support 10 is connected with the worm 11 through a bearing, the main shaft 5 is connected with the worm wheel 6 through a pin, and a gear on the worm wheel 6 is meshed with the worm 11; the worm wheel in the box body mechanism is meshed with the worm, the hand-operated mechanism drives the worm to move, and the worm are meshed through the gear on the worm wheel to transfer movement, so that the index plate rotates to the required scale.

In the portable dividing head in the embodiment of the invention, the hand-operated mechanism is connected with the worm 11 of the box body mechanism through a key.

According to the portable dividing head disclosed by the embodiment of the invention, the hand-operated mechanism comprises the hand-operated handle 1 and the hand-operated disk 2, the hand-operated handle 1 is connected with the hand-operated disk 2 through the bolt, and the hand-operated disk rotates to drive the worm gear to do circular motion, so that the scale of the dividing disk is adjusted.

In the portable dividing head in the embodiment of the invention, the fixed number of the dividing disc 3 is changed into 36 equal parts; the worm gear and worm transmission ratio is 1:36, the worm rotates for one circle, the worm wheel 6 rotates for one tooth, the worm wheel 6 rotates for one circle, and the dividing disc 3 rotates for 36 circles, so that the number of dividing heads is equal to 36; firstly, the index plate 3 is reset to zero, the worm 11 is driven to do circular motion by rotating the hand-operated device, the worm 11 rotates to drive the index plate 3 to rotate, the precision of the index plate is 0.1 degree, and the hand-operated device is rotated according to the required degree to enable the degree of the index plate to be aligned with the reading of a zero scale mark. In order to facilitate the operation of workers and meet the requirement of accurate indexing of the workers, the number of the indexing plates 3 is changed into 36 equal parts, the indexing accuracy is improved, the phenomenon of uneven indexing scales is reduced, and the weight of the indexing head is reduced.

In the portable index head in the embodiment of the invention, the locking mechanism comprises a locking head 8, a locking rod 9 and a locking block 7; the locking head 8 is connected with the locking rod 9, and the locking rod 9 is connected with the latch segment 7, the box mechanism is connected with locking rod 9 of locking mechanism, locking rod 9 of locking mechanism passes through-hole on the shell 4 is connected with the box mechanism, and before the graduation, the counter-clockwise turning locking head is confirmed in advance that the main shaft can rotate, and during the graduation, after confirming the reading, the clockwise turning locking head drives the latch segment to lock the main shaft again to ensure that the reading is accurate.

In the portable dividing head in the embodiment of the invention, the box body mechanism is connected with the locking rod 9 of the locking mechanism through threads, and the three-jaw chuck mechanism is connected with the main shaft of the box body through threads.

When the portable dividing head works, the dividing head is firstly placed on a processing plane, then a workpiece is clamped into the three-jaw chuck, the hand crank is rotated, the dial is rotated to the required degree by utilizing the working principle of the worm and gear, the main shaft is locked by rotating the locking head, so that the gear is ensured not to rotate any more to determine the size precision of the dividing disc, and at the moment, the workpiece is processed.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.