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Closed type multi-link high-speed precise punch mechanism

A precision punching and high-speed technology, which is applied in the field of mechanical pressure processing, can solve the problems of not designing the dynamic precision compensation structure of the bottom dead point and increasing the complexity of the whole machine structure, so as to realize the dynamic precision of the bottom dead point and improve the ability to resist partial load , the effect of improving the structural rigidity

Pending Publication Date: 2019-02-12
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Both patent CN 207887752 U and patent CN103144338A disclose a precision high-speed punching machine with a separate dynamic balance device on the upper part of the machine tool. Although the balance of inertial force can be realized, it also increases the complexity of the whole machine structure
In addition, CN 207887752 U and patent CN103144338A are not designed with a special bottom dead center dynamic precision compensation structure due to structural limitations

Method used

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  • Closed type multi-link high-speed precise punch mechanism
  • Closed type multi-link high-speed precise punch mechanism
  • Closed type multi-link high-speed precise punch mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, it is a structural schematic diagram of a closed multi-rod high-speed precision punch mechanism of the present invention, including a crank slider mechanism, a left branch chain, a right branch chain and a main slider 9 . The slider crank mechanism and the main slider 9 are vertically arranged on the fuselage, the slider crank mechanism is arranged directly above the fuselage, the main slider 9 is arranged directly below the fuselage, and the main slider 9 is connected to the fuselage through a moving pair. The left branch chain and the right branch chain are symmetrically connected in parallel between the slider crank mechanism and the main slider 9 .

[0023] The slider crank mechanism includes a crank 1, a connecting rod 2 and a balance slider 3. The crank 1 is connected to the fuselage through a rotating pair, the balance slider 3 is connected to the fuselage through a moving pair, and one end of the connecting rod 2 is connected to the fu...

Embodiment 2

[0027] Such as figure 2As shown, the difference between this embodiment and Embodiment 1 is that the two groups of lever mechanisms of the left branch chain and the right branch chain in the main transmission system in Embodiment 1 are changed from the internal drive mode to the external drive mode. Specifically, in the vertical direction, the left swing link 41 in the left branch chain and the right swing link 42 in the right branch chain are located inside the turning pair 10a and the turning pair 10b, that is, on the right side of the turning pair 10a and the turning pair 10b on the left side. The left pull rod 61 in the left branch chain and the right pull rod 62 in the right branch chain are located inside the swivel pair 10a and the swivel pair 10b, that is, on the right side of the swivel pair 10a and the left side of the swivel pair 10b. The left push rod 81 in the left branch chain and the right push rod 82 in the right branch chain are located on the outside of the...

Embodiment 3

[0029] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that an adjustment structure for dynamic precision compensation of the bottom dead center is added. One end of the left pull rod 61 in the left branch chain and one end of the right pull rod 62 in the right branch chain are respectively connected with the micro-motion adjustment slider 21a and the micro-motion adjustment slider 21b through the rotary pair 14a and the rotary pair 14b, and the left pull rod in the left branch chain The other end of the other end of 61 and the right pull rod 62 in the right side chain link to each other with the left pole 71 in the left side chain and the right pole 72 in the right side chain through a rotating pair respectively, and the fine movement adjustment slide block 21a and the fine movement adjustment slide block The block 21b is installed on the fuselage and symmetrically arranged on both sides of the fuselage, and the bottom dead center accurac...

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Abstract

The invention relates to a closed type multi-link high-speed precise punch mechanism. A slider-crank mechanism and a main slider are arranged on a punch base in the vertical direction. Two multi-linkmechanism and two push rods are symmetrically arranged on the two sides of a center line formed by the center of a balance slider and the center of the main slider. The corresponding rod pieces are identical in length. Each multi-link mechanism is composed of a swing rod, a push rod, a pull rod and a support rod, wherein the swing rod and the press rod form a lever mechanism, and the support rodand the push rod form a lever mechanism. Except that the balance slider, the main slider and a punch machine body are connected through moving pairs, the remaining rod pieces are connected all throughrotation pairs. According to the closed type multi-link high-speed precise punch mechanism, the closed type symmetrical lever type layout with a drive mechanism and a balance mechanism being integrated is adopted, so that the body structure of the punch can be greatly simplified; and by means of the symmetrical type lever structure arrangement, the unbalanced load resistance of the punch in the punching process can be effectively improved, and the blanking precision is improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical pressure processing, and in particular relates to a closed multi-rod high-speed precision punch mechanism with symmetrical rods. Background technique [0002] High-speed precision punching machines are widely used in stamping processing of precision parts such as communications, transformers, and motor stators and rotors. Compared with traditional punching machines, they have absolute advantages in the quality and efficiency of stamping parts. Due to its fast stamping speed and large inertia, it is usually necessary to design a dynamic balance system to eliminate the huge inertial force generated during the movement. [0003] Patent CN 207887752 U discloses a precision high-speed punching machine. The top of the bed is provided with a top seat horizontally, and upper guide posts are vertically provided on both sides of the lower end of the top seat. shaft, the connecting shaft is fixedly inser...

Claims

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Application Information

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IPC IPC(8): B30B1/06B21D28/02
CPCB21D28/002B21D28/02B30B1/06
Inventor 彭斌彬孙冠群王昭坤
Owner NANJING UNIV OF SCI & TECH
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