High-precision spline main shaft power head supported by sleeve

A power head, high-precision technology, applied in the direction of metal processing machinery parts, maintenance and safety accessories, metal processing equipment, etc., can solve the difficult to achieve position and speed control, difficult to meet the needs of processing, loss of spindle feed accuracy, etc. problems, to achieve the effect of reducing the influence of inertia, eliminating the need for water pipes, and the structure is beautiful and simple

CN112692631APending Publication Date: 2021-04-23固安航天兴邦机械制造有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-04-23

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Abstract

The invention belongs to the field of machine tools and particularly relates to a high-precision spline main shaft power head supported by a sleeve. Specific to the problem that the machining precision is affected due to the principle of thermal expansion and cold contraction on the premise of no main shaft cooling of a conventional power head, the following scheme is now put forwards. The high-precision spline main shaft power head comprises a connecting box body; a three-phase asynchronous motor, a servo motor and a power head are installed on the connecting box body; a lead screw is fixedly installed on an output shaft of the servo motor through a coupler; a lead screw nut is installed on the lead screw in a threaded mode; a sleeve is fixedly connected to the lead screw nut in a sleeving mode; a spline main shaft is movably installed in the power head; a body flange is fixedly connected to the power head in a sleeving mode; and the body flange is fixedly mounted on one side of the connecting box body. According to the high-precision spline main shaft power head supported by the sleeve, the servo motor is connected to the lead screw to control the feeding amount of the main shaft, the precision and the speed are far higher than those of a traditional mechanical gear or pneumatic feeding mode.
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Description

technical field

[0001] The invention relates to the technical field of machine tools, in particular to a high-precision spline spindle power head supported by a sleeve. Background technique

[0002] In the field of CNC machine tools, power heads generally refer to power components that can realize main motion and feed motion, and have automatic workpiece circulation. In the prior art, most machine tool power heads are fed by mechanical gears or pneumatically, and When feeding, the box is connected with the motor to feed together, the bearing is heavy, the resistance is large, and the centering of the main shaft is poor. Most of the feeding methods of the existing power head are based on the line rail and the slide table. When feeding, the main shaft and the power motor are together. Movement will lead to increased inertia, poor speed adaptability, and it is difficult to achieve precise position and speed control. After a long period of use, the line rail components will lose...

Examples

Embodiment 1

[0018] refer to Figure 1-3 , a high-precision spline spindle power head supported by a sleeve, including a connecting box 1, a three-phase asynchronous motor 2, a servo motor 3 and a power head 4 are installed on the connecting box 1, and the output shaft of the servo motor 3 passes through the connecting box. The shaft device is fixedly installed with a lead screw 7, the threaded mounting rod lead screw nut 8 on the lead screw 7, a sleeve is fixedly sleeved on the lead screw nut 8, a spline main shaft is movable installed in the power head 4, and a fixed sleeve is fixed on the power head 4 Connected with the body flange 9, the body flange 9 is fixedly installed on one side of the connection box 1, and the servo motor 3 is connected to the lead screw 7 to control the feed of the main shaft, and the accuracy and speed are much higher than traditional mechanical gears Or pneumatic feeding method.

[0019] In the present invention, the body flange 9 is provided with a spiral oi...

Embodiment 2

[0022] refer to Figure 1-3 , a high-precision spline spindle power head supported by a sleeve, including a connecting box 1, a three-phase asynchronous motor 2, a servo motor 3 and a power head 4 are installed on the connecting box 1, and the output shaft of the servo motor 3 passes through the connecting box. The shaft device is fixedly installed with a lead screw 7, the lead screw 7 is threaded to install the rod lead screw nut 8, the lead screw nut 8 is fixedly sleeved with a sleeve through welding, the power head 4 is movablely installed with a spline main shaft, and the power head 4 is The main body flange 9 is fixedly sleeved by welding, and the main body flange 9 is fixedly installed on one side of the connection box 1 by welding, and the servo motor 3 is connected to the lead screw 7 to control the feed of the main shaft, and the accuracy and speed are far away. Much higher than the traditional mechanical gear or pneumatic feed.

[0023] In the present invention, the...