High-speed feeding transmission mechanism for ram type milling head for numerical control machine tool

A CNC machine tool and feed transmission technology, which is applied in the direction of metal processing machinery parts, metal processing equipment, feeding devices, etc., can solve the problems that the transmission mode cannot meet the requirements, the axial force of the ball screw increases, and the feed acceleration is large. , to achieve the effect of convenient maintenance, high feed speed and extended service life

Inactive Publication Date: 2013-09-25
JIER MACHINE TOOL GROUP
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Problems solved by technology

[0003] At present, the vertical ram of the large-scale high-speed five-axis linkage CNC machine tool has a high feed speed (20m / min), and a large feed acceleration (about 3~5m / s) 2 ), the axial force borne by the ball screw increases significantly
At this time, the Z-axis feed mechanism needs to be studied as a multi-degree-of-freedom flexible body system, and the traditional transmission method cannot meet the requirements

Method used

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  • High-speed feeding transmission mechanism for ram type milling head for numerical control machine tool

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. The following description is only exemplary and does not limit the protection scope of the present invention.

[0017] Reference attached figure 1 , a high-speed feed transmission mechanism of a ram type milling head for a CNC machine tool. A power device is arranged on the ram 11 of the CNC machine tool. They are all fixed in the axial direction, and the screw nut in the screw nut pair is connected with the slide plate of the numerical control machine tool in the circumferential direction. The power unit includes a motor 1 and a reducer 3 connected to the motor 1. The reducer 3 is connected to the lead screw 4 in the lead screw female pair through the transmission key 12; Behind the pillow 11, one end of the leading screw 4 is fixedly connected with the power unit through the lock nut 2, the other end of the leading screw 4 is provide...

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Abstract

The invention provides a high-speed feeding transmission mechanism for a ram type milling head for a numerical control machine tool. The high-speed feeding transmission mechanism is applied to high-speed feeding of vertical rams of large high-speed five-axis numerical control machine tools, the transmission rigidity is good, high feeding speed, operating accuracy and reliability can be achieved, and the service life can be prolonged. According to the technical scheme, a power device is arranged on a ram of the numerical control machine tool and connected with a lead screw and nut pair, two ends of a lead screw in the lead screw and nut pair are fixed axially, and a nut in the lead screw and nut pair is connected with a slide carriage of the numerical control machine tool circumferentially.

Description

technical field [0001] The invention relates to a high-speed feed transmission mechanism of a ram type milling head for a numerical control machine tool, which is suitable for high-speed feed of a vertical ram of a large-scale high-speed five-axis linkage numerical control machine tool. Background technique [0002] The vertical ram of ordinary CNC machine tools mostly adopts the ball screw nut pair transmission structure as its feed mechanism, which is divided into two forms: screw movement and nut movement. The transmission primary generally uses a synchronous belt to reduce speed, and one end of the ball screw is axially fixed, and the other end is a free end. At this time, the rigidity of the drive chain of the ram feeding mechanism is low, and it can be studied as a multi-degree-of-freedom rigid body system. The feed speed is generally slow (about 6-10m / min), and the feed acceleration is small (about 0.3-1m / s2), [0003] At present, the vertical ram of the large-sc...

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Application Information

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IPC IPC(8): B23Q5/40
Inventor 孙建宏史振文王春妮
Owner JIER MACHINE TOOL GROUP
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