Forging forming load balancing method

Abstract

The forging forming load balancing method comprises a rear beam, a rear cylinder, a pull rod, a nut, a machine body and a die, the rear beam and the machine body are fixed through the pull rod, the rear cylinder is installed in the rear beam, a piston rod is arranged in the rear cylinder, an extrusion rod is arranged on the piston rod, and the die is directly connected with the rear beam through the pull rod and the nut. A closed inner stress structure is formed between the mold and the rear beam, so that stress balance between the mold and the rear beam is achieved; the mold has the beneficial effects that 1, the mold is connected with the rear beam through the pull rod and the nut to form a closed inner stress frame, and the stress scheme is simple in structure and low in cost; external supporting force for stress balance of the mold is converted into internal acting force between the mold and the rear beam, and the rigidity and reliability of the structure are improved;

Description

Technical Field

[0001] This invention relates to the field of hydraulic press technology, specifically a method for load balancing in forging. Background Technology

[0002] The rear cylinder of the multi-directional forging hydraulic press is mounted on the rear beam. The rear beam is fixed to the machine body by tie rods and nuts. A flat key is installed at the part where the mold fits with the worktable, or a stop block is installed at the front end of the machine body to counteract the force of the rear cylinder. The rear cylinder of the multi-directional forging hydraulic press is mounted on the rear beam. The rear beam is fixed to the machine body by tie rods, nuts and the front beam, forming a closed cavity for stress. When the mold is subjected to force, the force of the rear cylinder is transmitted and offset by the baffle and tie rod mounted on the front beam.

[0003] The thrust generated by the rear cylinder is resisted by a flat key or stop block mounted on the worktable. The machining accuracy requirements are high, the machining difficulty is high, the installation space of the flat key or stop block is limited, and the load-bearing capacity is limited. After the main cylinder closes the mold, when the rear cylinder is working, the upper mold part transmits the horizontal thrust to the slider guide plane through the friction force f, which generates a lateral thrust on the slider guide rail, which can easily damage the guide rail and compromise the guiding accuracy. The main cylinder piston will also generate a lateral shear force due to the horizontal thrust, which can cause the piston to break or the piston guide sleeve to shatter. When a support beam is used on the front side, the thrust F2 generated by the rear cylinder is offset by the rear beam, tie rod, nut, front beam and baffle, so that the force of the rear cylinder is transferred to the front beam through the rear beam and tie rod, and becomes internal stress. However, since the front beam is installed in the front operating area of ​​the main unit, it will cause difficulties for workers to operate, load and unload materials and disassemble and assemble molds. Summary of the Invention

[0004] The purpose of this invention is to solve the existing problems and provide a load balancing method for forging.

[0005] The technical solution of the present invention is as follows: A forging forming load balancing method includes a rear beam, a rear cylinder, a tie rod, a nut, a machine body, and a die. The rear beam is fixed to the machine body by a tie rod. The rear cylinder is installed inside the rear beam and has a piston rod inside. A pressing rod is installed on the piston rod. The die is directly connected to the rear beam through the tie rod and the nut, so that the die and the rear beam form a closed internal force-bearing structure, thereby achieving force balance between the die and the rear beam. When the rear cylinder is pressurized with oil, the piston rod generates a forward thrust F2. The rear cylinder transmits the reaction force to the rear beam through its shoulder, causing the rear beam to generate a backward thrust F2. At the same time, the piston rod thrust F2 acts on the mold through the extrusion rod, causing the mold to generate a forward thrust F2. The mold and the rear beam are fixed together by n tie rods. The tie rods transfer the forward thrust F2 of the mold to the rear beam. The average force on each tie rod is F2 / n, thus achieving internal force balance between the rear beam and the mold.

[0006] Preferably, the rear beam is a load-bearing component of the rear cylinder, used to withstand the reaction force during operation, forming a closed force-bearing frame.

[0007] Preferably, the mold has a left cylinder and a right cylinder symmetrically arranged on both sides, and each of the left cylinder and the right cylinder has a piston rod and an extrusion rod, the extrusion rod being matched with the mold.

[0008] Preferably, when oil is supplied to the left cylinder and the right cylinder and pressurized, the piston rod generates a thrust F1 toward the mold, and the mold generates a reaction force F1 toward the piston rod.

[0009] The beneficial effects of this invention are as follows: 1. The mold and the rear beam are connected by tie rods and nuts to form a closed internal force-bearing frame. The force-bearing structure is simple and the cost is low. 2. The external support force that balances the mold is converted into the internal force between the mold and the rear beam, thereby improving the structural rigidity and reliability. Attached Figure Description

[0010] Figure 1 This is a top cross-sectional view of the present invention; Figure 2 This is a schematic diagram of the force analysis of the present invention; In the attached diagram: 1. Rear beam; 2. Rear cylinder; 3. Tie rod; 4. Nut; 5. Machine body; 6. Mold; 7. Left cylinder; 8. Right cylinder. Detailed Implementation

[0011] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0012] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be in a centered component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may also be in a centered component. When a component is said to be "set to" another component, it can be directly set on the other component or it may also be in a centered component.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0014] like Figure 1-2 As shown, the forging forming load balancing method includes a rear beam 1, a rear cylinder 2, a tie rod 3, a nut 4, a machine body 5, and a mold 6. The rear beam 1 is fixed to the machine body 5 by the tie rod 3. The rear cylinder 2 is installed inside the rear beam 1 and has a piston rod inside. The piston rod has a pressing rod. The mold 6 is directly connected to the rear beam 1 by the tie rod 3 and the nut 4, so that the mold 6 and the rear beam 1 form a closed internal force-bearing structure, thereby achieving force balance between the mold 6 and the rear beam 1. When oil is injected and pressurized into the rear cylinder 2, the piston rod generates a forward thrust F2. The rear cylinder 2 transmits the reaction force to the rear beam 1 through its shoulder, causing the rear beam 1 to generate a backward thrust F2. At the same time, the piston rod thrust F2 acts on the mold 6 through the extrusion rod, causing the mold 6 to generate a forward thrust F2. The mold 6 and the rear beam 1 are fixed together by n tie rods 3. The tie rods 3 transfer the forward thrust F2 of the mold 6 to the rear beam 1. The average force on each tie rod 3 is F2 / n, thus achieving internal force balance between the rear beam 1 and the mold 6.

[0015] Specifically, the rear beam 1 is a load-bearing component of the rear cylinder 2, used to withstand the reaction force during operation, forming a closed force-bearing frame.

[0016] Specifically, the mold 6 is symmetrically provided with a left cylinder 7 and a right cylinder 8 on both sides. Both the left cylinder 7 and the right cylinder 8 have a piston rod and a pressing rod, and the pressing rod is matched with the mold 6.

[0017] Specifically, when oil is supplied to the left cylinder 7 and the right cylinder 8 and pressurized, the piston rods generate a thrust F1 toward the mold 6, and the mold 6 generates a reaction force F1 toward the piston rod.

[0018] In this invention, the mold 6 and the rear beam 1 are connected by tie rod 3 and nut 4 to form a closed internal force-bearing frame, which converts the external support force of the mold 6 into the internal force between the mold 6 and the rear beam 1, thereby improving the structural rigidity and reliability.

[0019] The above description is only for understanding the method and core idea of ​​the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A load balancing method for forging and pressing, characterized in that: The machine includes a rear beam, a rear cylinder, a tie rod, a nut, a machine body, and a mold. The rear beam is fixed to the machine body by the tie rod. The rear cylinder is installed inside the rear beam and has a piston rod inside. The piston rod has a pressing rod. The mold is directly connected to the rear beam by the tie rod and the nut, so that the mold and the rear beam form a closed internal force-bearing structure, achieving force balance between the mold and the rear beam. When the rear cylinder is pressurized with oil, the piston rod generates a forward thrust F2. The rear cylinder transmits the reaction force to the rear beam through its shoulder, causing the rear beam to generate a backward thrust F2. At the same time, the piston rod thrust F2 acts on the mold through the extrusion rod, causing the mold to generate a forward thrust F2. The mold and the rear beam are fixed together by n tie rods. The tie rods transfer the forward thrust F2 of the mold to the rear beam. The average force on each tie rod is F2 / n, thus achieving internal force balance between the rear beam and the mold.

2. The forging and forming load balancing method according to claim 1, characterized in that: The rear beam is the load-bearing component of the rear cylinder, used to withstand the reaction force during operation, forming a closed force-bearing frame.

3. The forging and forming load balancing method according to claim 1, characterized in that: The mold has a left cylinder and a right cylinder symmetrically arranged on both sides. Both the left cylinder and the right cylinder have a piston rod and an extrusion rod, and the extrusion rod is matched with the mold.

4. The forging and forming load balancing method according to claim 3, characterized in that: When oil is supplied to the left and right cylinders and pressurized, the piston rod generates a thrust F1 toward the mold, and the mold generates a reaction force F1 toward the piston rod.

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