阅读说明：本技术 自动分度窄直角铣头 (Automatic indexing narrow right-angle milling head ) 是由 王伟 张立伟 程志 刘阳 于 2021-08-06 设计创作，主要内容包括：一种自动分度窄直角铣头。主要解决现有的数控铣镗床自动分度铣头端部尺寸大而无法伸入到零件内腔加工的问题。其特征在于：所述传动轴(11)外部设有连接套B(17),连接套B(17)通过连接板(3)与连接体(1)相连,连接体(1)右端连接有鼠齿盘A(4)；连接套B(17)外部设有碟形弹簧组(6),碟形弹簧组(6)外部设有滑套(7),滑套(7)左端与碟形弹簧组(6)左侧的连接件相连,滑套(7)右端固定在铣头体(13)上,且滑套(7)内部连接有分度齿轮A(9)；铣头体(13)上固定有与鼠齿盘A(4)相啮合的鼠齿盘B(5)。该自动分度窄直角铣头缩小了主轴端部尺寸,使其能够通过小孔径伸入零件内腔进行加工。(An automatic indexing narrow right-angle milling head. The automatic indexing milling head mainly solves the problem that the end of the automatic indexing milling head of the existing numerical control milling and boring machine is large in size and cannot extend into an inner cavity of a part to be machined. The method is characterized in that: a connecting sleeve B (17) is arranged outside the transmission shaft (11), the connecting sleeve B (17) is connected with the connecting body (1) through a connecting plate (3), and the right end of the connecting body (1) is connected with a mouse fluted disc A (4); a disc spring group (6) is arranged outside the connecting sleeve B (17), a sliding sleeve (7) is arranged outside the disc spring group (6), the left end of the sliding sleeve (7) is connected with a connecting piece on the left side of the disc spring group (6), the right end of the sliding sleeve (7) is fixed on the milling head body (13), and an indexing gear A (9) is connected inside the sliding sleeve (7); a mouse fluted disc B (5) meshed with the mouse fluted disc A (4) is fixed on the milling head body (13). The automatic indexing narrow right-angle milling head reduces the size of the end part of the main shaft, so that the main shaft can extend into the inner cavity of a part through a small aperture to be processed.)

1. The utility model provides an automatic narrow right angle cutter head of graduation, includes transmission shaft (11), connector (1), cutter head body (13), main shaft (15), transmission shaft (11) left end is fixed on connection pad (2), and connection pad (2) link to each other its characterized in that with the lathe ram: a connecting sleeve B (17) is arranged outside the transmission shaft (11), the connecting sleeve B (17) is connected with the connecting body (1) through a connecting plate (3), and the right end of the connecting body (1) is connected with a mouse fluted disc A (4); a disc spring group (6) is arranged outside the connecting sleeve B (17), a sliding sleeve (7) is arranged outside the disc spring group (6), the left end of the sliding sleeve (7) is connected with a connecting piece on the left side of the disc spring group (6), the right end of the sliding sleeve (7) is fixed on the milling head body (13), and an indexing gear A (9) is connected inside the sliding sleeve (7); the automatic transmission device is characterized in that a mouse fluted disc B (5) meshed with the mouse fluted disc A (4) is fixed on the milling head body (13), a connecting sleeve A (12) is arranged inside the milling head body (13), the left end of the connecting sleeve A (12) is connected with an indexing gear B (10), the right end of the connecting sleeve A (12) is connected with a transmission gear A (14), the indexing gear B (10) is meshed with an indexing gear A (9), the transmission gear A (14) is meshed with a transmission gear B (16), and the transmission gear B (16) is connected with a main shaft (15).

2. The automatically indexing narrow right angle milling head of claim 1, wherein: and a limit switch (19) is fixed outside the connecting body (1).

3. The automatically indexing narrow right angle milling head of claim 2, wherein: and an adjusting nut (8) is arranged at the right end of the disc spring group (6).

Technical Field

The invention relates to the field of machine tools, in particular to an automatic indexing narrow right-angle milling head.

Background

In the using process of the numerical control boring and milling machine, in order to improve the automation degree, a plurality of automatic indexing milling heads are generally equipped. The clamping and the loosening of the automatic indexing milling head are usually controlled by hydraulic pressure, and as enough clamping force is ensured, the hydraulic oil cylinder of the automatic indexing milling head has larger size, which causes the external dimension of the milling head to be larger. In some special cases, when the automatic indexing milling head needs to be inserted into the inner cavity of a part for machining, the traditional indexing milling head cannot be realized due to the large size of the end part of the spindle (such as the L size shown in fig. 1).

Disclosure of Invention

In order to overcome the defect that the end part of the automatic indexing milling head of the existing numerical control milling and boring machine is large in size and cannot extend into the inner cavity of a part to be machined, the invention provides the automatic indexing narrow right-angle milling head, and the size of the end part of a main shaft is reduced, so that the end part of the main shaft can extend into the inner cavity of the part to be machined through a small aperture.

The technical scheme of the invention is as follows: an automatic indexing narrow right-angle milling head comprises a transmission shaft, a connecting body, a milling head body and a main shaft, wherein the left end of the transmission shaft is fixed on a connecting disc, the connecting disc is connected with a ram of a machine tool, a connecting sleeve B is arranged outside the transmission shaft, the connecting sleeve B is connected with the connecting body through the connecting plate, and the right end of the connecting body is connected with a mouse fluted disc A; a disc spring group is arranged outside the connecting sleeve B, a sliding sleeve is arranged outside the disc spring group, the left end of the sliding sleeve is connected with a connecting piece on the left side of the disc spring group, the right end of the sliding sleeve is fixed on the milling head body, and a dividing gear A is connected inside the sliding sleeve; the gear milling machine is characterized in that a mouse tooth disc B meshed with the mouse tooth disc A is fixed on the milling head body, a connecting sleeve A is arranged in the milling head body, the left end of the connecting sleeve A is connected with an indexing gear B, the right end of the connecting sleeve A is connected with a transmission gear A, the indexing gear B is meshed with the indexing gear A, the transmission gear A is meshed with the transmission gear B, and the transmission gear B is connected with the main shaft.

And a limit switch is fixed outside the connecting body.

And an adjusting nut is arranged at the right end of the disc spring group.

The invention has the following beneficial effects: by adopting the scheme, the original hydraulic clamping structure of the milling head is eliminated, the milling head is clamped by the disc spring group instead, the overall dimension can be controlled, particularly, the dimension of the head of the main shaft can be controlled to be small, and the milling head can extend into the inner cavity of a part through a small aperture to be processed. Meanwhile, as the automatic indexing can be realized, one-time clamping can be realized, the processing of different positions can be completed, and the processing precision and efficiency are greatly improved.

Drawings

FIG. 1 is a schematic view of the structure of the present invention (clamped state);

fig. 2 is a schematic view of the structure of the present invention (an indexing state or a release state).

In the figure, 1-a connecting body, 2-a connecting disc, 3-a connecting plate, 4-a mouse fluted disc A, 5-a mouse fluted disc B, 6-a disc spring set, 7-a sliding sleeve, 8-an adjusting nut, 9-a dividing gear A, 10-a dividing gear B, 11-a transmission shaft, 12-a connecting sleeve A, 13-a milling head body, 14-a transmission gear A, 15-a main shaft, 16-a transmission gear B, 17-a connecting sleeve B, 18-an oil cavity and 19-a limit switch.

Detailed Description

The invention will be further described with reference to the accompanying drawings in which:

as shown in fig. 1 and 2, the automatic indexing narrow right-angle milling head comprises a transmission shaft 11, a connector 1, a milling head body 13 and a spindle 15, wherein the left end of the transmission shaft 11 is fixed on a connecting disc 2 through a screw, the connecting disc 2 is connected with a ram of a machine tool, a connecting sleeve B17 is arranged outside the transmission shaft 11, and a bearing is arranged between the transmission shaft 11 and the connecting sleeve B17, so that the transmission shaft 11 and the connecting sleeve B17 can rotate mutually. The left end of the connecting sleeve B17 is connected with the connecting body 1 through the connecting plate 3, and the right end of the connecting body 1 is connected with a rat fluted disc A4; a disc spring group 6 is arranged outside the connecting sleeve B17, a sliding sleeve 7 is arranged outside the disc spring group 6, and an indexing gear A9 is connected inside the sliding sleeve 7; the left end of the sliding sleeve 7 is connected with a connecting piece on the left side of the disc spring set 6, the right end of the sliding sleeve 7 is fixed on a milling head body 13, a mouse tooth disk B5 meshed with the mouse tooth disk A4 is fixed on the milling head body 13, and the right end of the disc spring set 6 is provided with an adjusting nut 8 which can adjust the compression length of the disc spring set 6. A connecting sleeve A12 is arranged in the milling head body 13, the left end of the connecting sleeve A12 is connected with an indexing gear B10, the right end of the connecting sleeve A12 is connected with a transmission gear A14, the indexing gear B10 is meshed with the indexing gear A9, the transmission gear A14 is meshed with the transmission gear B16, and the transmission gear B16 is connected with the main shaft 15. A limit switch 19 is fixed outside the connector 1.

The connecting body 1, the mouse tooth disc A4, the connecting plate 3, the sliding sleeve 17, the transmission shaft 11, the connecting disc 2, the transmission gear B10 and other parts are connected into a whole, and the part can be called as a fixed part relative to the automatic indexing milling head; the rat fluted disc B5, the sliding sleeve 7, the indexing gear A9, the connecting sleeve A12, the transmission gear A14, the main shaft 15 and the transmission gear B16 are all arranged on the milling head body 13, and the part can be called as a sliding part relative to the automatic indexing milling head. The sliding part is integrally installed on the shaft diameter of the connecting disc 2, the mouse tooth disc A4 and the mouse tooth disc B5 are tightly combined due to the action of the disc spring group 6, and meanwhile, the indexing gear A9 and the indexing gear B10 are disengaged, so that the indexing milling head keeps stable integral precision under the working conditions of machining or non-machining.

When indexing is required, hydraulic oil is introduced into the oil chamber 18 shown in fig. 1, and due to the action of the oil pressure, the sliding part of the indexing cutter head slides along the axial direction of the connecting body 1, the rat toothed disc a4 and the rat toothed disc B5 are separated, the indexing gear a9 and the indexing gear B10 are engaged, and the indexing cutter head enters an indexing mode (as shown in fig. 2). The main shaft of the numerical control milling and boring machine drives the connecting disc 2 and the transmission shaft 11 to rotate according to a set angle, and the dividing gear A9 and the dividing gear B10 are in a meshed state, so that the main shaft of the numerical control milling and boring machine can drive the sliding part of the automatic dividing milling head to rotate when rotating, and the purpose of dividing is achieved. The sliding distance of the sliding part of the index milling head is controlled by a limit switch 19.

After the indexing is finished, the rat toothed disc A4 and the rat toothed disc B5 restore the tight combination state due to the action of the disc spring set 6, and meanwhile, the indexing gear A9 and the indexing gear B10 are in the disengagement state. At this time, the index cutter head returns to the state shown in fig. 1, and cutting can be performed.