CN204166800U - A kind of down-pressing system of rolling mill gear train teaching model - Google Patents

Abstract

The utility model discloses a kind of down-pressing system of rolling mill gear train teaching model, the principle of work of down-pressing system of rolling mill can be shown vividly.This teaching model comprises: gear wheel, shaft coupling, worm gear, housing screw, coupling shaft, bearing, worm screw, pinion wheel, motor, motor frame, frame, roll and bearing seat.The utility model is by mechanically operated typical part---and worm gear and worm screw, gear, screw and nut integrate very dexterously on a model; Worm gear both can be used as the driving parts of double reduction, can be used as again the screw box realizing pressure adjustment, the two was united two into one, and served a dual-purpose effect, saved material, reduce and taken up space.This teaching model can be used for the teaching of the multi-door courses such as rolling machinery, Machine Design, mechanical principle, metallurgical equipment robotization, machinery maintenance, is with a wide range of applications.

Description

A Teaching Model of Transmission Mechanism of Rolling Mill Pressdown System

technical field

The utility model relates to a steel rolling machine teaching model, in particular to a rolling mill pressing system transmission mechanism teaching model. the

Background technique:

The working principle of the existing rolling mill pressing system is that two motors are respectively decelerated through the gear pair, worm wheel and worm pair to drive the two pressing screws to rotate, and the middle part of the pressing screw cooperates with the pressing nut fixed on the frame to form a screw thread. Connection, the tail is connected with the worm wheel through the spline, so as to realize the adjustment of the roll gap. Because the pressing system is located above the frame, and the transmission mechanism is a closed transmission, it is difficult to understand its internal structure and working principle on site, and it is even more difficult to observe when the pressing nut is fixed in the frame, and the weight of its parts and Both are large in size. the

At present, there are few teaching models about steel rolling machinery in the classroom, so that the teacher cannot vividly show the working principle of the rolling mill pressing system to the students. The classroom teaching content is abstract, the teaching method is single, and there is no fun. Theory and practice cannot be organically connected. combined. the

Utility model content

The utility model provides a transmission mechanism teaching model of a rolling mill pressing system, which can vividly display the working principle of the rolling mill pressing system. the

The utility model provides a rolling mill pressing system transmission mechanism teaching model including: a pair of large gears, four couplings, a pair of worm gears, two pressing screws, a connecting shaft, four bearings, a pair of worms , a pair of small gears, a motor, a motor frame, two racks, two rolls and four bearing seats, the motor is fixed on the motor frame, connected with the pinion, the pinion gear meshes with the large gear, and the small gear The gear and the large gear perform one-stage deceleration, and the worm is driven to rotate through the coupling, and the worm is connected to the worm wheel through the connecting shaft to perform two-stage deceleration. The screw forms a thread transmission, the screw is pressed down to fix the bearing seat, the screw is pressed down to slide on the guide rail of the frame, and the roll is driven to move in a straight line to realize the adjustment of the roll gap. The large gear, coupling, worm wheel, connecting shaft, worm and Bearings are installed on the rotating shafts of the pinions. the

The motor is a GPG-05SC DC geared motor with a power of 10W, a speed of 600rpm, and two-way rotation. the

The beneficial effects of the utility model are reflected in:

1. The typical parts of mechanical transmission - worm gear and worm, gears, screws and nuts are skillfully combined on one model;

2. In the design of the pressing nut, the worm gear can be used not only as the transmission part of the two-stage deceleration, but also as the pressing nut to realize the pressing adjustment. Combining the two into one, it has a dual-purpose effect. Save materials and reduce the occupied space;

3. This model can be used in the teaching of steel rolling machinery, mechanical design, mechanical principles, metallurgical equipment automation, mechanical equipment maintenance and other courses, and has wide application prospects; 

4. Adopting lightweight materials, it has the characteristics of small size and light weight, which is easy to store and carry;

5. The frame is made of plexiglass, which makes the frame have sufficient strength and rigidity and good wear resistance, which can prolong the service life of teaching aids, and can also visually observe its internal structure and transmission principle;

6. All part drawings are drawn by soildworks and assembled into assembly drawings. the

Description of drawings

Fig. 1 is a structural schematic diagram of a transmission mechanism teaching model of a rolling mill pressing system. the

As shown in the picture: 1-big gear 2-coupling 3-worm gear 4-press screw 5-connecting shaft 6-bearing 7-worm 8-pinion 9-motor 10-motor frame 11-rack 12-roller 13-Bearing seat

Detailed ways

As shown in Figure 1, a transmission mechanism teaching model of rolling mill pressing system consists of a pair of large gears 1, four couplings 2, a pair of worm gears 3, two pressing screws 4, a connecting shaft 5, four Bearing 6, a pair of worms 7, a pair of pinions 8, a motor 9, a motor frame 10, two frames 11, two rolls 12 and four bearing housings 13, the motor 9 is fixed on the motor frame 10 upper, connected with the pinion 8, the pinion 8 meshes with the bull gear 1, and after the pinion 8 and the bull gear 1 are decelerated by one stage, the worm 7 is driven to rotate through the coupling 2, and the worm 7 is connected to the worm gear 3 through the connecting shaft 5 , for two-stage deceleration, the worm wheel 3 is a hollow structure and is processed with an internal thread, which plays the role of pressing down the nut, and forms a thread transmission with the pressing screw 4, and the pressing screw 4 is fixed on the bearing seat 13, and the pressing screw 4 is on the machine. Slide on the guide rail of frame 11, drive roll 12 to move linearly, and realize roll gap adjustment. The rotating shafts of the large gear 1, coupling 2, worm gear 3, connecting shaft 5, worm 7 and pinion 8 are all equipped with bearings 6. the

The specific parameters of each component are as follows:

Motor 9: GPG-05SC DC geared motor, power 10W, speed 600rpm, bidirectional rotation;

A pair of pinions 8: the module is 2, the number of teeth is 17, the helix angle is 20°, left-handed, and the pressure angle is 20°;

A pair of large gears 1: the module is 2, the number of teeth is 34, the helix angle is 20°, right-handed, and the pressure angle is 20°;

Four couplings 2: the inner diameter is 10mm;

A pair of worms 7: the modulus is 1.5, the number of heads is 1, and the pressure angle is 20°;

A pair of worm gears 3: the modulus is 1.5, the number of teeth is 30, and the pressure angle is 20°;

Two pressing screws 4: coarse teeth, outer diameter 18mm, pitch 1.25, length 110mm;

Four bearing housings 13: 19mm×19mm×40mm;

Roller 12: diameter is 20mm, length is 150mm. the

Claims (2)

1. A rolling mill pressing system transmission mechanism teaching model is characterized in that the model includes: a pair of large gears, four shaft couplings, a pair of worm gears, two pressing screws, a connecting shaft, four bearings, A pair of worms, a pair of pinion gears, a motor, a motor frame, two racks, two rollers and four bearing housings, the motor is fixed on the motor frame, connected with the pinion gear, the pinion gear and the large gear teeth Coupling, the pinion gear and the large gear perform a first-stage deceleration, and the worm is driven to rotate through the coupling, and the worm is connected to the worm wheel through a connecting shaft to perform a two-stage deceleration. It forms thread transmission with the pressing screw, the pressing screw is fixed on the bearing seat, and the pressing screw slides on the guide rail of the frame, driving the roll to move in a straight line to realize the adjustment of the roll gap. The large gear, coupling, worm wheel, and connecting shaft Bearings are installed on the rotating shafts of , worm and pinion. 2. The transmission mechanism teaching model of a rolling mill pressing system according to claim 1, characterized in that said motor adopts a GPG-05SC type DC geared motor with a power of 10W and a rotating speed of 600rpm, and bidirectional rotation.