RU2225276C2 - High-speed hammer - Google Patents

Abstract

FIELD: forging press equipment. SUBSTANCE: high-speed hammer includes frame, head with axial cavity and mechanism for holding head. In axial cavity of head there is plunger whose one end is jointly connected with crank mechanism of hammer drive unit. Mechanism for holding head is in the form of spring-loaded fixing members mounted on head, rotary keys arranged in frame and rotary cams. The last are mounted in frame and they are mutually joined by means of synchronizing tie rod and also they are joined with power electromagnets controlled by control unit. Each rotary key is provided with spring-loaded lever. Said levers are supported onto rotary cams. EFFECT: simplified design, improved operational reliability of hammer. 1 dwg

Description

 The invention relates to the field of forging equipment, in particular to high-speed hammers.

 Known pneumatic drive hammer, in which the movement of the woman is ensured by the supply of compressed air from the compressor cylinder, the piston of which is connected with a crank mechanism [1].

 A disadvantage of the known hammer is its low energy capabilities, since the maximum overpressure required to disperse the woman is usually 0.1-0.2 MPa, while in high-speed gas hammers this parameter is much larger [1].

 The closest in technical essence is a high-speed hammer [2], containing a woman with an axial cavity, in which there is a plunger articulated at one end with a crank drive mechanism, and a woman holding mechanism.

 The disadvantage of this device is the structural complexity of fixing and releasing the woman to complete the working stroke.

 The disadvantage is the low reliability of the fixation structure, the possibility of jamming.

 The invention is aimed at simplifying the design and improving reliability.

 This is achieved by the fact that the mechanism of holding the woman in the cocked position and releasing it is located on the hammer bed, and only the spring-loaded clamps are located in the woman, which should not experience disturbances due to high dynamic loads at the time of impact. The system of persistent knuckles associated with power electromagnets and holding the rotary keys, is made with control from a command device mounted on the crank shaft of the hammer.

 The invention is illustrated in the drawing.

 The hammer contains a crank shaft 1, which is connected by a connecting rod to the plunger 2, having a through hole 3 on its stem. The plunger is located in the cavity made in the woman 4. Spring-loaded clamps are located in the lower part of the woman 5. The rotary dowels 6 of the segment shape are installed on the hammer bed. Each key has a spring 7, a lever 8 with a roller at the end. Fists 9 are mounted on the bed, interconnected by a synchronizing rod 10. Fists are connected to power electromagnets 11, controlled from a command device on a crank shaft (not shown conditionally).

 The hammer works as follows.

 In the initial position, the woman 4 using the clamps 5 rests on the rotary dowels 6 installed in the frame, which in turn, through the levers 8, rest on the fists 9 installed in the frame. The plunger 2 is also in the upper position, while the through hole 3 is brought out of the cavity into a woman. When the clutch is turned on (not shown conditionally), the rotation from the electric motor is transmitted to the crank shaft, which, moving the plunger 2 through the cavity in the woman by the time it reaches its lowest position, creates an air pressure of 2-3 MPa in the lower part of the cavity. The through hole 3 thus enters the cavity, communicating its upper part with the atmosphere. When the plunger approaches the lowermost position, according to the signal from the control unit, the power electromagnets 11 are turned on and the fists 9 are turned, which are interconnected by a synchronizing rod 10. When the fists are turned, the levers 8 with the rollers at the ends are released, which allows the rotary dowels 6 to rotate, releasing the latches 5, and thereby, allowing the woman to start moving to complete the working move. In the process of this movement, the hole 3 connects the upper part of the cavity in the woman with the atmosphere, and the plunger passes through the lowermost position. After making the working stroke, the woman is in the lowest position, and the plunger with the help of the crank shaft moves up. From the moment the hole 3 leaves the cavity, air pressure begins to increase in its upper part, forcing the woman to also begin to move upward. By the time the plunger reaches its highest position, the latches 5 pass through their bevels with the rotary keys 6, which are set to their initial position using springs 7 and the levers 8 are supported by fists 9, which, when the electromagnets 11 are turned off, are also returned to their original position. Thus, the woman is again set to its original position, and the crank shaft, bringing the plunger to the extreme position, stops with a brake (not shown conditionally). Next, the cycle repeats.

 The use of the invention allows to simplify the design of the hammer, to increase reliability.

Sources of information
1. Forging and stamping equipment / A.N. Banquetov, -M.: Engineering, 1970, 600 p.

 2. Copyright certificate SU 353483, 07/30/1976, B 21 J 7/24.

Claims (1)

A high-speed hammer containing a bed, a headstock with an axial cavity in which a plunger is pivotally articulated at one end with a crank drive mechanism, and a headstock holding mechanism, characterized in that said headstock holding mechanism is made in the form of spring-loaded clamps mounted on the head, rotary keys placed on the frame, each of which is equipped with a spring-loaded lever, and rotary fists mounted on the frame, interconnected by a synchronizing rod and connected to power elements electromagnet made of the conditions of management of controller software from, and levers are relying on the knuckles.