CN103851185A - Mechanical torque control device - Google Patents

Abstract

The invention provides a mechanical torque control device comprising a worm gear, a worm shaft, a gear, a moment shaft and a data display, wherein the worm shaft comprises a worm toothed region which is a worm; a rack toothed region, which is a rack, is arranged at the right side of the worm toothed region in the circumferential direction; the rightmost end of the worm shaft is linked with a motor, a spring sleeves the worm at the left side, and the worm gear is engaged with the worm; the gear is fixedly connected to the moment shaft, and engaged with the rack; the data display is fixedly connected to the moment shaft. The mechanical torque control device has the advantages of simple structure, easy implementation and low cost.

Description

A kind of mechanical type torque control unit

Technical field

The present invention relates to a kind of control gear, relate in particular to a kind of mechanical type torque control unit.

Background technique

The gear transmission that worm drive is intermeshed between the alternating axis forming by worm and wheel, be widely used in the machineries such as lathe, automobile, instrument or equipment, there is the features such as velocity ratio is large, stable drive, compact structure, noise free, self-locking performance, engagement in transmission process between worm and wheel produces axial force to worm screw, in the time that bearing load is larger, pressure between engaging tooth on worm and wheel and frictional force are also larger, easily cause contact segment excess Temperature even to damage the gear teeth; Therefore, need a kind of mechanical type torque control unit, prevent that worm gearing from working under larger load, guarantee that its usability and structure are not damaged.

Summary of the invention

The problem to be solved in the present invention be to provide a kind of simple in structure, be easy to realize, mechanical type torque control unit that cost is low.

For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of mechanical type torque control unit, comprises worm gear, worm shaft, gear, axis of torque and data diply equpment;

Described worm shaft comprises worm screw tooth form district, is worm screw; The right side in described worm screw tooth form district is circumferentially with tooth bar tooth form district, is tooth bar; The left side of described worm screw is set with a spring, and described worm gear is meshed with worm screw; The low order end of described worm shaft and motor linkage;

Described gear is fixed on axis of torque, and described gear is meshed with described tooth bar; Described data diply equpment is fixed on axis of torque.

Further, described spring is belleville spring.

Further, described data diply equpment is dial, described dial and described axis of torque coaxial line.

Advantage and good effect that the present invention has are: adopt the technical program, realize the shifting amount of worm shaft and the rotation angle of dial is corresponding, it is the torque that the decrement of belleville spring has been reacted worm shaft, and be presented on dial, can further make operator control the working state of whole device, guarantee that whole device normally works within the scope of load rating, and have advantages of simple in structure, be easy to realize, cost is low.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is left view of the present invention in Fig. 1.

In figure:

1. worm shaft 2. bearing 3. belleville springs

4. pressing plate 5. axis of torque 6. dials

7. worm gear 8. gears

Embodiment

The present invention is further elaborated to enumerate a concrete enforcement below in conjunction with accompanying drawing.

As shown in Figure 1 and Figure 2, the present embodiment is a kind of mechanical type torque control unit, comprises worm gear 7, worm shaft 1, gear 8, axis of torque 5 and data diply equpment; Worm shaft comprises worm screw tooth form district, is worm screw; The right side in worm screw tooth form district is circumferentially with tooth bar tooth form district, is tooth bar; The left side of worm screw is set with a spring, and worm gear is meshed with worm screw; The low order end of worm shaft and motor linkage;

Gear 8 is fixed on axis of torque 5, and gear 8 is meshed with described tooth bar; Data diply equpment is fixed on axis of torque 5.

In the present embodiment, spring is belleville spring 3; Data diply equpment is dial 6, dial 6 and axis of torque 5 coaxial lines.

The working principle of the present embodiment: the present invention is a kind of mechanical type torque control unit, wherein worm shaft 1 rotates under the drive of motor, because the rotation direction of worm shaft 1 has positive and negative, worm shaft 1 engages with worm gear 7, therefore worm shaft 1 can just pass through, counterrotating realizes axial left and right play back and forth, its middle (center) bearing 2 is fixing belleville spring 3 in both sides, in the time that worm shaft 1 rotates, worm shaft will act on belleville spring 3, belleville spring 3 is compressed to certain deformation quantity, and tooth bar and axis of torque 5 on worm shaft 1 cogs intermeshing, in the time that worm shaft 1 rotates, the straight line motion of worm shaft 1 will be converted into the circular movement of the scale-board 6 on axis of torque 5, be that the angle that the shifting amount of worm shaft 1 just can be rotated by scale-board quantizes, because belleville spring 3 is stressed constant in the situation that, deformation quantity is also constant, therefore, can measure by measuring the decrement of belleville spring 3 axial force of worm shaft, realize torque control.

In sum, the present invention can effectively realize the control of torque, and lamps structure simple, be easy to the advantage that realizes, cost is low.

Above one embodiment of the present of invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variation and improvement etc. of doing according to the present patent application scope, within all should still belonging to patent covering scope of the present invention.

Claims (3)

1. a mechanical type torque control unit, is characterized in that: comprise worm gear, worm shaft, gear, axis of torque and data diply equpment;

Described worm shaft comprises worm screw tooth form district, is worm screw; The right side in described worm screw tooth form district is circumferentially with tooth bar tooth form district, is tooth bar; The left side of described worm screw is set with a spring, and described worm gear is meshed with worm screw; The low order end of described worm shaft and motor linkage;

Described gear is fixed on axis of torque, and described gear is meshed with described tooth bar; Described data diply equpment is fixed on axis of torque.

2. mechanical type torque control unit according to claim 1, is characterized in that: described spring is belleville spring.

3. mechanical type torque control unit according to claim 1, is characterized in that: described data diply equpment is dial, described dial and described axis of torque coaxial line.

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