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Multi-head ball screw device

A ball screw, multi-head technology, applied in the direction of the transmission device, belt/chain/gear, mechanical equipment, etc., can solve the problems of displacement speed limitation, small helix angle, and screw transmission device is incompetent, so as to improve the displacement speed and increase the speed. Effect of large helix angle

Inactive Publication Date: 2008-08-20
陈坤志
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the helix angle of the common screw transmission device is small, so the displacement speed of the transmission is limited
If it is necessary to increase the displacement speed of the transmission, it is necessary to increase the helix angle and rotational speed of the screw, but to improve the processing accuracy of the screw and to use stronger materials, this will directly cause a substantial increase in the cost of the process, and it is difficult to increase the transmission power.
Therefore, for transmission occasions that require low speed and large displacement, the existing screw transmission device is not competent

Method used

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0011] A multi-head ball screw device, including a screw shaft 1 with a raceway groove 10, a nut 2 with a raceway groove 20, and balls carried between the screw shaft 1 and the nut 2 (not shown in the figure) , Wherein, nut 2 is made up of outer cover 21, upper guide plate 22, lower guide plate 23, upper end cover 24, lower end cover 25 and nut main body 26.

[0012] The interacting raceway grooves (10, 20) described in this embodiment are composed of 8 helical grooves. In this way, through the combination of multi-head spiral grooves, the transmission load capacity and stability are improved. Therefore, the present invention can adopt a larger helix angle, thereby increasing the transmission speed and meeting the transmission occasions that require low speed and large displacement.

[0013] The specific embodiments described above are only preferred e...

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Abstract

The invention relates to a multi-head ball screw device, comprising screw shafts and nuts of a raceway concave trough which are acted on each other and rolling balls which are supported between the screw shafts and the nuts. The multi-head ball screw device is characterized in that the raceway concave trough is formed by the combination of spiral troughs with two heads or more than two heads. The multi-head ball screw device has the beneficial effects that the multi-head ball screw device are formed by the combination of multi-head spiral troughs, thus increasing the helix angle on the premise that the transmission power is ensured, improving the displacement speed of the transmission, and meeting the transmission occasion where low rotation speed and large displacement quantity are required.

Description

Technical field [0001] The invention relates to a transmission device, in particular to a multi-head ball screw device. Background technique [0002] At present, the common screw transmission device has a small helix angle, so the displacement speed of the transmission is limited. If it is necessary to increase the displacement speed of the transmission, it is necessary to increase the helix angle and rotational speed of the screw, but to improve the machining accuracy of the screw and to use stronger materials, this will directly cause a substantial increase in the cost of the process, and it is difficult to increase the transmission power. Therefore, for transmission occasions that require low speed and large displacement, the existing screw transmission device is not competent. Contents of the invention [0003] In order to overcome the shortcomings of the existing screw transmission device with a small helix angle and low transmission power, the present invention prov...

Claims

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Application Information

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IPC IPC(8): F16H25/22
Inventor 陈坤志
Owner 陈坤志
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