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Flexible screw

A kind of screw and flexible technology, applied in the direction of belt/chain/gear, mechanical equipment, transmission device, etc., can solve the problems of limited screw stroke control, short adjustable distance, complex structure, etc., to achieve good torsion resistance, The effect of enhancing torsion resistance

Inactive Publication Date: 2014-09-10
忻云祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its structure is complex and inconvenient to install
And the stroke control of the screw rod is extremely limited, and the adjustable distance is very short

Method used

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  • Flexible screw
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example as image 3 , Image 6 , Figure 8 As shown, the threaded thread 17 is round, and the elastic thread is round, which is the most common round thread wound. The cross-section of the threaded thread is circular, and its diameter is larger than that of the elastic thread. The threaded thread forms a continuous spiral guideway on the surface of the flexible threaded rod.

Embodiment 2

[0041] Example two such as Figure 4 , Figure 7 with Figure 9 As shown, the cross-sectional shape of the thread 17 is drum-shaped or rectangular, and the upper and lower ends are flattened or ground. Compared with the thread with circular cross-section, the strength of rectangular and drum-shaped thread is better, and the internal thread of the matching screw pair is easier to process and has better wear resistance.

Embodiment 3

[0042] Embodiment three such as Figure 10 As shown, the cross-sectional shape of the thread is a triangular thread 20, which is more suitable for a flexible screw rod with denser thread and smaller spacing.

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PUM

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Abstract

A flexible screw comprises an elastic spindle and more than two elastic wire layers tightly wrapping the elastic spindle. Each elastic wire layer is made by winding one or plurality of elastic wires. The elastic wires in the adjacent layers are wound in opposite directions. The outermost layer of elastic wires is further provided with a screw thread; the screw thread and the elastic wires are wound alternately; the height of an operating face of the screw thread is unequal to that of the elastic wires. The flexible screw comprises the elastic spindle, the elastic wires and the screw thread; the elastic spindle is of good elasticity; the elastic wires enhance torsion resistance of the screw; the screw thread is high in hardness and is spirally around the elastic spindle; accordingly, the flexible screw has good axial deforming capacity and as good as a flexible shaft in torsion resistance; meanwhile, the screw thread has high hardness, and the flexible screw can serve as a guide rail or guide channel for use with a screw assembly. The flexible screw can be bent according to users' needs and can be used in a non-linear form, and the screw assembly can move in a curvilinear form.

Description

technical field [0001] The invention relates to a transmission device, in particular to a flexible screw rod. Background technique [0002] The screw is a commonly used stroke control element on mechanical equipment. It cooperates with the screw pair to convert rotary motion into linear motion, or convert linear motion into rotary motion. Usually, one end of the screw rod is connected to the servo motor. Driven by the servo motor, it can accurately control the movement of the processing equipment connected to the screw rod pair, and quickly move and stop in the axial direction. It is widely used in mechanical and electrical equipment such as manipulators, automated machining tables, and placement machines. [0003] At present, the transmission screw rods on the market are all made of alloy, and their hardness is very high. When the screw rotates, the screw pair can only move along a straight line or along a designed specific curve. In some special occasions, such as curve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/24F16H25/22B23P15/14
CPCF16H25/2427B23P15/14F16H25/2204F16H2025/249
Inventor 忻云祥
Owner 忻云祥
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