阅读说明：本技术 一种旋压机主轴结构 (Main shaft structure of spinning machine ) 是由 何发诚 张召杰 陈昳 周建杰 邢峰 王俊 夏天 于 2021-06-30 设计创作，主要内容包括：本发明公开了一种旋压机主轴结构,包括主轴、花盘、齿圈、箱体、轴承,所述主轴安装在箱体内,主轴的前端设有花盘,花盘的背面连接有齿圈,花盘的背面与箱体之间设有推力滚子轴承,主轴通过若干双列圆柱滚子轴承与箱体连接,所述主轴的尾端设有推力球轴承,该推力球轴承通过垫圈和尾端锁紧螺母固定,主轴为空心结构,内部安装有顶料油缸,油缸通过主轴尾部的旋转接头供油,实现活塞杆的伸出和收缩,主轴尾部设有支座,旋转接头连接在支座上,并通过油管与顶料油缸联通。该结构具有高刚性和高承载性。(The invention discloses a main shaft structure of a spinning machine, which comprises a main shaft, a disc chuck, a gear ring, a box body and a bearing, wherein the main shaft is arranged in the box body, the front end of the main shaft is provided with the disc chuck, the back surface of the disc chuck is connected with the gear ring, a thrust roller bearing is arranged between the back surface of the disc chuck and the box body, the main shaft is connected with the box body through a plurality of double-row cylindrical roller bearings, the tail end of the main shaft is provided with a thrust ball bearing, the thrust ball bearing is fixed with a tail end locking nut through a gasket, the main shaft is of a hollow structure, a material ejecting oil cylinder is arranged in the main shaft, the oil cylinder supplies oil through a rotary joint at the tail part of the main shaft to realize the extension and contraction of a piston rod, the tail part of the main shaft is provided with a support, and the rotary joint is connected to the support and is communicated with the material ejecting oil cylinder through an oil pipe. The structure has high rigidity and high bearing capacity.)

1. A spinning-lathe main shaft structure is characterized in that: including main shaft, colored disc, ring gear, box, bearing, the main shaft is installed in the box, and the front end of main shaft is equipped with the colored disc, and the back connection of colored disc has the ring gear, is equipped with thrust roller bearing between the back of colored disc and the box, and the main shaft is connected with the box through a plurality of double-row cylindrical roller bearing, the tail end of main shaft is equipped with thrust ball bearing, and this thrust ball bearing passes through packing ring and tail end lock nut and fixes, and the main shaft is hollow structure, and internally mounted has the liftout hydro-cylinder, and the hydro-cylinder passes through the rotary joint fuel feeding of main shaft afterbody, realizes stretching out and the shrink of piston rod, and the main shaft afterbody is equipped with the support, and rotary joint connects on the support to through oil pipe and liftout hydro-cylinder UNICOM, the box afterbody is equipped with the afterbody flange cover.

2. The spinning machine spindle structure according to claim 1, characterized in that: the double-row cylindrical roller bearings are respectively a first double-row cylindrical roller bearing and a second double-row cylindrical roller bearing, the first double-row cylindrical roller bearing is arranged at the front end of the main shaft and locked through a front end locking nut, and the second double-row cylindrical roller bearing is arranged at the rear end of the main shaft and locked through a rear end locking nut.

3. The spinning machine spindle structure according to claim 1 or 2, characterized in that: the cylindrical roller bearing adopts a double-row cylindrical roller bearing with adjustable clearance.

4. The spinning machine spindle structure according to claim 1, characterized in that: the gaskets are respectively a box body gasket and a main shaft gasket, the main shaft gasket is sleeved outside the main shaft, and the box body gasket is arranged in the box body.

5. The spinning machine spindle structure according to claim 1, characterized in that: the faceplate is connected with the main shaft through a screw, and the gear ring is connected with the faceplate through a screw.

6. The spinning machine spindle structure according to claim 1, characterized in that: a labyrinth seal groove is arranged between the face plate and the main shaft box body to realize the front end seal of the main shaft system, and the tail part of the main shaft box body is sealed by a rotary seal ring arranged on a tail part flange plate.

Technical Field

The invention belongs to the field of spinning machine equipment, and particularly relates to a spindle structure of a spinning machine.

Background

The spinning forming technology is an advanced forming technology, integrates the processes of extrusion, stamping, ring rolling, cross rolling, forging, rolling and the like, and is an advanced process with less cutting and no cutting processing.

The spinning machine can spin cylindrical parts and curved bus parts, is widely applied in the field of aerospace, and is mainly used for machining parts such as rocket engine shells, end sockets and the like. In a spinning machine tool, spinning force is divided into longitudinal force and transverse force, the transverse spinning force is generally balanced as much as possible in the design of the machine tool by taking a machine tool coordinate as a reference, and the longitudinal spinning force directly acts on a main spindle box of the machine tool through a die. In most existing machine tool spindle box structures, longitudinal bearing and longitudinal rigidity of a spindle are insufficient, and the service life is short.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a spindle structure of a spinning machine, which has high rigidity and high bearing capacity.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a spinning-lathe main shaft structure, includes main shaft, colored disc, ring gear, box, bearing, the main shaft is installed in the box, and the front end of main shaft is equipped with the colored disc, and the back connection of colored disc has the ring gear, is equipped with thrust roller bearing between the back of colored disc and the box, and the main shaft is connected with the box through a plurality of double-row cylindrical roller bearing, the tail end of main shaft is equipped with thrust ball bearing, and this thrust ball bearing passes through the packing ring and the tail end lock nut is fixed, and the main shaft is hollow structure, and internally mounted has the liftout hydro-cylinder, and the hydro-cylinder passes through the rotary joint fuel feeding of main shaft afterbody, realizes stretching out and the shrink of piston rod, and the main shaft afterbody is equipped with the support, and rotary joint connects on the support to through oil pipe and liftout hydro-cylinder UNICOM.

In the above technical solution, the double-row cylindrical roller bearings are respectively a first double-row cylindrical roller bearing and a second double-row cylindrical roller bearing, the first double-row cylindrical roller bearing is arranged at the front end of the main shaft and locked by a front end locking nut, and the second double-row cylindrical roller bearing is arranged at the rear end of the main shaft and locked by a rear end locking nut.

In the above technical scheme, the cylindrical roller bearing adopts a double-row cylindrical roller bearing with adjustable clearance.

In the technical scheme, the gaskets are respectively a box body gasket and a main shaft gasket, the main shaft gasket is sleeved outside the main shaft, and the box body gasket is arranged in the box body.

In the technical scheme, the faceplate is connected with the main shaft through a screw, and the gear ring is connected with the faceplate through a screw.

In the technical scheme, a labyrinth seal groove is arranged between the face disc and the main spindle box body, so that the front end of the main spindle system is sealed, and the tail of the main spindle box body is sealed by a rotary seal ring arranged on a tail flange plate.

In the technical scheme, the tail part of the box body is provided with the tail flange cover.

The invention has the beneficial effects that: the thrust roller bearing is arranged on the back of the faceplate, so that the axial load of the faceplate can be directly transmitted to the box body through the thrust roller bearing, and the main shaft does not bear the axial load; the specification of the thrust roller bearing can be not limited by the size of the main shaft, and the maximization of the specification of the thrust roller bearing can be ensured under the main shafts with the same specification; the gear ring is directly arranged on the faceplate, and can directly transmit the main transmission torque to the faceplate without passing through the main shaft; the double-row cylindrical roller bearing with adjustable clearance can further improve the rotation precision of the main shaft; the liftout hydro-cylinder is installed at the inside front end of main shaft, supplies oil through rotary joint, and hydro-cylinder thrust is bigger, and the rigidity is stronger, can effectively reduce the stroke of liftout in-process piston rod.

Drawings

Fig. 1 is a schematic sectional structure of the present invention.

Wherein: 1. the device comprises a main shaft, 2, a faceplate, 3, a gear ring, 4, a thrust roller bearing, 5, a first double-row cylindrical roller bearing, 6, a second double-row cylindrical roller bearing, 7, a thrust ball bearing, 8, a box body, 9, a front end locking nut, 10, a rear end locking nut, 11, a tail end locking nut, 12, a main shaft gasket, 13, a box body gasket, 14, a jacking oil cylinder, 15, an oil pipe, 16, a support, 17, a rotary joint, 18 and a tail flange cover.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

As shown in fig. 1, a spinning machine main shaft structure comprises a main shaft 1, a disc chuck 2, a gear ring 3, a box body 8 and a bearing, wherein the main shaft 1 is installed in the box body 8, the disc chuck 2 is arranged at the front end of the main shaft 1, the gear ring 3 is connected to the back of the disc chuck 2, a thrust roller bearing 4 is arranged between the back of the disc chuck 2 and the box body 8, the main shaft 1 is connected with the box body 8 through a plurality of double-row cylindrical roller bearings, a thrust ball bearing 7 is arranged at the tail end of the main shaft 1, and the thrust ball bearing 7 is fixed through a gasket and a tail end locking nut 11. The thrust ball bearing 7 is installed at the tail of the main shaft through a gasket 12 and a locking nut 11, the gasket 13 restrains the axial freedom degree of the main shaft, the main shaft 1 is of a hollow structure, the material ejecting oil cylinder 14 is installed in an inner hole of the main shaft 1, the tail of the main shaft 1 is provided with a support, and the rotary joint 17 is installed on the support 16 and communicated with the material ejecting oil cylinder 14 through an oil pipe 15.

In the technical scheme, a labyrinth seal groove is arranged between the face disc and the main spindle box body, so that the front end of the main spindle system is sealed, and the tail of the main spindle box body is sealed by a rotary seal ring arranged on a tail flange plate.

In the above technical solution, the double-row cylindrical roller bearings are respectively a first double-row cylindrical roller bearing 5 and a second double-row cylindrical roller bearing 6, the first double-row cylindrical roller bearing 5 is arranged at the front end of the main shaft 1 and locked by a front end locking nut 9, and the second double-row cylindrical roller bearing 6 is arranged at the rear end of the main shaft 1 and locked by a rear end locking nut 10.

In the above technical scheme, the cylindrical roller bearing adopts a double-row cylindrical roller bearing with adjustable clearance.

In the above technical scheme, the gaskets are a box gasket 13 and a main shaft gasket 12, the main shaft gasket 12 has an L-shaped cross section and is sleeved outside the main shaft 1, and the box gasket 13 is installed in the box 8 and is in contact with the main shaft gasket 12.

In the technical scheme, the faceplate 2 is connected with the main shaft 1 through screws, and the gear ring 3 is connected with the faceplate 2 through screws.

In the above technical solution, the side surface of the box body 8 is provided with a tail flange cover 18.

During operation, the first double-row cylindrical roller bearing 5 and the second double-row cylindrical roller bearing 6 bear radial load of the main shaft and ensure high-precision rotation of the main shaft; the thrust roller bearing 4 directly bears axial load through the faceplate 2, the main shaft 1 is not subjected to axial force, the axial load capacity of a main shaft system is effectively improved, and the service life of the bearing is prolonged; the gear ring 3 directly drives the faceplate 2, and the main shaft 1 does not need to bear driving torque, so that the rigidity of main transmission is increased.

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 changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.