CN201076870Y - Phase regulating device for cross wedge rolling mill - Google Patents

Abstract

A phase adjustment device for a cross wedge rolling mill, including a roll gear, a roll shaft, a force transmission connecting rod and a pin shaft. The bolts on both sides of the column are respectively covered with inner nuts and outer nuts, the pins are vertically connected to the side of the roll gear and can rotate relatively, and the force transmission connecting rod has 2-4 arms. The phase adjustment device of the cross wedge rolling mill of the utility model adopts common parts, has the advantages of simple structure, convenient installation and adjustment, uniform stress on each arm and each bolt, good reliability and low failure rate.

Description

Cross wedge rolling mill phase adjustment device

technical field

The utility model relates to a mechanical phase adjustment device, in particular to a phase adjustment device for a cross wedge rolling mill.

Background technique

Cross wedge rolling mill is a commonly used high-efficiency forging equipment. This equipment is equipped with two rolls above and below, and an equal number of T-shaped grooves are evenly distributed on the two rolls for installing molds. The upper and lower rolls rotate synchronously in the opposite direction, and the forging material placed between the two rolls is formed at one time.

Since the dies are placed on two round rolls, the phase positioning between the upper and lower sets of dies is crucial to the rolling quality. However, the cross wedge rolling mill is often used to roll different products, that is, to change the mold frequently. It is difficult to achieve the same height for different molds, so it is necessary to change the center distance between the two rolls, and changing the center distance between the two rolls will cause phase The phase difference will cause the mold to have a phase difference, and a large phase difference will affect the quality of the rolled piece and even make the rolling process impossible, but the process of aligning the phase by adjusting the mold is quite cumbersome.

In order to eliminate this phase difference, a phase adjustment mechanism is generally installed on the cross wedge rolling mill. The existing phase adjustment mechanism is usually installed on the lower roll, and Fig. 3 shows a commonly used form thereof. Specifically: the roll gear 1 is empty on the roll shaft 2, and a force transmission connecting rod 4A is installed on the roll shaft 2, and a pin shaft 5A is correspondingly provided on the roll gear 1, between the force transmission connecting rod 4A and the pin shaft 5A , each dress rod 9 with a thread, two pull rod threads are reversed, opposite to each other, and are connected with a double-ended adjusting nut 9A with a corresponding thread.

In this phase adjustment mechanism, the roll gear 1 and the other roll are always synchronous and in phase. Adjusting the adjusting nut 9A can change the distance between the force transmission connecting rod 4A and the pin shaft 5A, and also change the distance between the roll gear 1 and the roll. Phase between axis 2.

In this phase adjustment mechanism, the force transmission link can have two arms, or three arms and four arms. The more arms, the greater the force transmission, but the corresponding structure is more complicated.

This phase adjustment mechanism is the most common, but has the following defects:

1. It is difficult to evenly distribute the force on the upper tie rods of each arm, and the result of uneven force can easily lead to cracking of the tie rods;

2. When adjusting the nut, it is judged that the adjustment direction is not clear, special tools are required for adjustment, and the process is complicated;

3. The structure is complicated, and some parts are complicated to make;

4. It is easy to cause mutual interference when adjusting on both sides, and it is not easy to operate.

Utility model content

In order to make up for the above shortcomings, the utility model provides a phase adjustment device for a cross wedge rolling mill with uniform force, simple and clear judgment direction and simple and easy adjustment process.

The phase adjustment device of the utility model cross wedge rolling mill comprises a roll gear, a roll shaft, a force transmission connecting rod and a pin shaft, wherein: on the end of the force transmission connection rod, a bolt is crossed, and the head of the bolt sinks on the In the power transmission connecting rod, the rod passes through the corresponding horizontal hole on the pin, and the bolts on both sides of the pin are respectively sleeved with inner nuts and outer nuts.

The utility model relates to a phase adjustment device for a cross wedge rolling mill, wherein: the pin is vertically connected to the side of the roll gear and can rotate relative to each other.

The utility model relates to a phase adjustment device for a cross wedge rolling mill, wherein: the force transmission connecting rod has 2-4 arms.

The phase adjustment device of the cross wedge rolling mill of the utility model adopts common parts, has the advantages of simple structure, convenient installation and adjustment, uniform stress on each arm and each bolt, good reliability and low failure rate.

Description of drawings

Fig. 1 is the schematic diagram of the phase adjustment device of the cross wedge rolling mill of the present invention;

Fig. 2 is the A-A sectional view of the schematic diagram of the phase adjustment device of the cross wedge rolling mill of the present invention;

Fig. 3 is a structural diagram of an existing cross wedge rolling mill phase adjustment device;

Fig. 4 is a schematic diagram of relevant parts of a cross wedge rolling mill with a phase adjustment device.

Detailed ways

For further setting forth the utility model, below in conjunction with embodiment is described in more detail. Fig. 1 is a schematic diagram of a phase adjustment device for a cross wedge rolling mill of the present invention. Wherein comprise lower roll 10, roll shaft 2, roll gear 1, roll shaft 2 and lower roll 10 are one, stretch out from lower roll 10 side; Between the roll shaft 1 and the roll gear 2, a tension sleeve 3 is installed. On the end of the roll shaft 2, outside the roll gear 1, a force transmission connecting rod 4 is housed; The side of the roller gear 1 of position, respectively establishes a pin 5; Between this pin 5 and the roller gear 1, should be able to rotate.

From the arm end of the force transmission connecting rod 4 to the pin 5, a bolt 6 is traversed, the head of the bolt sinks inside the outer side of the arm end of the force transmission connecting rod 4, the rod passes through the corresponding horizontal hole on the pin 5 and passes through a suitable On the bolts 6 on both sides of the pin 5, the inner nut 8 and the outer nut 7 are respectively sleeved.

The force received on the roll gear 1 is transmitted to the roll shaft 2 through the pin 5, the bolt 6 (including the outer nut 7 and the inner nut 8), and the force transmission connecting rod 4, so as to drive the roll shaft 2 to rotate.

To adjust the phase, follow the steps below:

1. Loosen the outer nut 7 (or inner nut 8) on each arm;

2. Optionally tighten the inner nut 8 (outer nut 7) with one arm;

3. When the position is appropriate, adjust the inner nuts 8 (outer nuts 7) of other arms to the appropriate positions;

4. Retighten the outer nuts 7 (inner nuts 8) of each arm.

The above process is the clockwise adjustment in the figure, and the reverse adjustment is in the brackets.

It can be seen that the utility model does have the advantages of strong versatility, simple structure, convenient installation, easy adjustment, uniform force, high reliability, and low failure rate.

Claims (3)

1. cross wedge rolling machine phase adjusting device, comprise roller gear (1), roll mandrel (2), force transmitting link (4) and pin (5), it is characterized in that: on described force transmitting link (4) termination, cross a bolt (6), the head of described bolt (6) sinks in the described force transmitting link (4), bar is through described pin (5) and goes up in the corresponding cross-drilled hole, on the bolt (6) of described pin (5) both sides, be with inner nut (8) and outer nut (7) respectively.

2. according to the cross wedge rolling machine phase adjusting device of claim 1, it is characterized in that: described pin (5) is connected with described roller gear (1) lateral vertical and can relatively rotates.

3. according to the cross wedge rolling machine phase adjusting device of claim 2, it is characterized in that: described force transmitting link (4) has the 2-4 arm.

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