CN101951122A - Precision linear driving device for steel wire rope - Google Patents

Abstract

A precision linear drive device for steel wire ropes, consisting of a motor (1), a coupling (2), a reel (3), a platform slider (4), two guide wheels (5), one guide wheel (7), and a guide wheel Composed of three (8), guide rail (9), and steel wire rope (10), it is characterized in that one end of the steel wire rope (10) is fixed on one end (a) of the reel (3) and after being wound several times, it passes through the guide wheel one (7) After guiding, the steel wire rope (10) passes through the platform slider (4) in parallel, and the steel wire rope changes its direction by 180° through the second guide wheel (5) and is pressed and fixed with the platform slider (4) by screws (6). Wind the reel (3) several times through the guide wheel three (8), and fix it on the other end (b) of the reel (3); the guide rail (9) and the steel wire rope that constitute the moving pair with the platform slider (4) The reciprocating direction of (10) is parallel, and the axes of guide wheel one (7) and guide wheel three (8) are parallel to each other and the axis distance (Δ ₁ ) is less than the length (L) of reel (3). The axis of (3) is perpendicular to the axes of guide wheel one (7), guide wheel three (8), and guide wheel two (5), respectively, and the diameter (D) of reel (3) and the diameter of guide wheel two (5) (d ₀ ) are equal and equal to the distance (Δ ₂ ) between the motion planes of the first guide wheel (7) and the third guide wheel (8). This device has the advantages of simple structure, low cost, convenient use, light weight, high positioning accuracy, etc., and can realize the precise reciprocating linear motion of the platform slider for short and long strokes.

Description

A wire rope precision linear drive device

technical field

The present invention relates to a precision linear drive method, in particular to provide a precision linear drive device with simple structure, safety and reliability, which is especially suitable for long-distance linear motion.

Background technique

The traditional usage of wire rope is mainly used for hoisting and pulling operations in traction equipment such as driving, cranes, elevators, and cableways. On the one hand, steel wire rope has the advantages of good flexibility, high strength, light weight, stable winding and no noise, etc., and because its fracture occurs gradually, generally the whole root will not break, so it is safe and reliable when working; on the other hand, modern Long-distance reciprocating precision linear motion is often used in production technology. At present, the existing linear drive methods mainly include: 1) linear motor, high speed, high precision, but short stroke, and high cost; 2) ball wire Bar drive and synchronous belt drive can guarantee high precision and speed, but relatively speaking, the cost is relatively high, and it is not suitable for long-distance precision linear drive. Therefore, a new type of high-precision linear drive method and device is required, especially suitable for long-distance linear motion or occasions where the motion direction needs to be changed.

Contents of the invention

The purpose of the present invention is to provide a simple structure, safe and reliable precision linear drive device, the technical solution is: it consists of servo motor (1), coupling 2), reel (3), platform slider (4) , guide wheel two (5), guide wheel one (7), guide wheel three (8), guide rail (9), steel wire rope (10) are formed, and one end of steel wire rope (10) is fixed on an end (a) of reel (3) ) and wound a few times, after being guided by the first guide wheel (7), the steel wire rope (10) passes through the platform slider (4) in parallel, and then passes through the second guide wheel (5) so that the steel wire rope changes its direction by 180° and slides with the platform. After the block (4) is compressed and fixed, it is wound around the reel (3) several times through the guide wheel three (8), and fixed on the other end (b) of the reel (3), and the platform slider (4) The reciprocating direction of the guide rail (9) and the steel wire rope (10) that constitute the moving pair is parallel, and the axes of the guide wheel one (7) and the guide wheel three (8) are parallel to each other and the axis distance (Δ ₁ ) is smaller than the drum ( 3) Length (L), while the axis of the reel (3) is perpendicular to the axes of the first guide wheel (7), the third guide wheel (8) and the second guide wheel (5), the diameter of the reel (3) (D ) is equal to the diameter (d ₀ ) of the second guide wheel (5), and equal to the distance (Δ ₂ ) between the motion planes of the first guide wheel (7) and the third guide wheel (8). The device has the advantages of simple structure, low cost, convenient use, light weight, high positioning accuracy and good energy saving performance, and can simultaneously realize the precise reciprocating linear motion of the platform slide block in short and long strokes.

Description of drawings

Accompanying drawing 1 is the structural representation of the present invention.

Detailed ways

The present invention will be further described below in conjunction with drawings and embodiments.

Fig. 1 is an embodiment of the present invention, and it is made up of servomotor 1, shaft coupling 2, reel 3, platform slider 4, guide wheel two 5, guide wheel one 7, guide wheel three 8, guide rail 9, steel wire rope 10 Composition, one end of the wire rope 10 is fixed on the end a of the reel 3 and after being wound several times, after being guided by the first guide wheel 7, the steel wire rope 10 passes through the platform slider 4 in parallel, and then the steel wire rope changes its direction by 180° through the second guide wheel 5 After pressing and fixing the platform slider 4 with the screw 6, the guide wheel 3 8 is wound on the reel 3 for several turns, and fixed on the other end b of the reel 3; further, it forms a moving pair with the platform slider 4 The reciprocating direction of the guide rail 9 and the wire rope 10 is parallel, and the axes of the first guide wheel 7 and the third guide wheel 8 are parallel to each other and the axis distance _Δ1 is less than the length L of the reel 3. 7. The axes of guide wheel three 8 and guide wheel two 5 are respectively vertical, and the diameter D of reel 3 is equal to the diameter _d0 of guide wheel two 5, and is equal to the distance between guide wheel one 7 and guide wheel three 8 motion planes Δ ₂ .

Its working principle is: looking from the k direction, when the servo motor 1 rotates clockwise at a certain speed, the steel wire rope 10 on one side passes through the guide wheel 7 and winds the end of the reel 3 close to point a, and the other end of the reel 3 The steel wire rope 10 at point b winds down and passes through the guide wheel 8, driving the platform slider 4 to move to the left together. When the hour hand rotates, it drives the reel 3 to reverse, and the wire rope 10 winds the reel 3 through the guide wheel 8 again, and the wire rope 10 winds the lower reel through the guide wheel 7 again, so that the sliding block 4 of the mobile platform moves to the right together. Steel wire rope is in tension state all the time in the whole process, and guide pulley 5,7,8 and steel wire rope 10 belong to pure rolling, and frictional force is very little. This device has the advantages of simple structure, low cost, convenient use, light weight, high positioning accuracy, good energy saving, etc., and can realize the precise reciprocating linear motion of the platform slider for short and long strokes.

Claims (1)

1. the accurate linear drive apparatus of a steel wire rope, by servomotor (1), shaft coupling (2), reel (3), platform slide block (4), directive wheel two (5), directive wheel one (7), directive wheel three (8), guide rail (9), steel wire rope (10) is formed, after an end that it is characterized in that steel wire rope (10) is fixed on an end (a) of reel (3) and twines several circles, after directive wheel one (7) guiding, the parallel platform slide block (4) that passes of steel wire rope (10), again after directive wheel two (5) makes steel wire rope change 180 ° of directions and is fixed with screw (6) with platform slide block (4), again through directive wheel three (8) again around several circles of coiling (3), and be fixed on the other end (b) of reel (3); The guide rail (9) that constitutes moving sets with platform slide block (4) is parallel with the vibration-direction of steel wire rope (10), and the axis of directive wheel one (7), directive wheel three (8) is parallel to each other and axis spacing (Δ ₁) less than reel (3) length (L), the axis of reel (3) is vertical respectively with the axis of directive wheel one (7), directive wheel three (8), directive wheel two (5) simultaneously, the diameter (D) of reel (3) and the diameter (d of directive wheel two (5) ₀) equate, and equal distance (Δ between directive wheel one (7), directive wheel three (8) plane of movement ₂).

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