Main transmission mechanism of all-electric servo numerical control turret punch press

Abstract

The invention discloses a main transmission mechanism of an all-electric servo numerical control turret punch press. The main transmission mechanism comprises a servo motor, a crankshaft, a connection rod, a sliding block, a frame and a fixing frame. The crankshaft is connected with the sliding block. The input end of the crankshaft penetrates through the frame and is fixedly connected with a motor rotor in a rigid mode. The motor rotor and a motor stator are hinged through a front bearing and a rear bearing. The motor stator is coaxially sleeved with the fixing frame, and at least one elastic assembly is arranged between the motor stator and the fixing frame. Each elastic assembly comprises multiple suspension components, first torsion components and second torsion components, wherein the first torsion components and the second torsion components are distributed in symmetry. By means of the structure, the servo motor is flexibly connected with the frame, the axial size is compact, and the load inertia of the mechanism is small. Radial deformation in any direction can happen and is not large in rigidity. When the radial deformation in any direction happens, the suspension components have an energy consumption effect. Torsion deformation around the axial direction is avoided, torsion rigidity is infinite, and the main transmission mechanism can be applied to occasions of high speed and heavy loads.

Description

technical field [0001] The invention relates to a main transmission mechanism of a numerical control turret punch press, in particular to a main transmission mechanism of an all-electric servo numerical control turret punch press. Background technique [0002] CNC turret punch presses are important equipment in the field of sheet metal processing. Turret punch presses can be divided into three types: mechanical, hydraulic and all-electric servo according to the power source type of its main transmission mechanism. Due to the outstanding advantages of the all-electric servo turret punch press, such as fast speed, high precision, energy saving, environmental protection, and process flexibility, it has gradually replaced the traditional mechanical and hydraulic structures in recent years and has become the mainstream product in the industry. [0003] According to the type of mechanism in the prior art, it can be divided into various mechanism forms such as crank slider type and...

AI Technical Summary

Problems solved by technology

[0006] Disadvantages: 1. The coupling is easily damaged in the process of power transmission, with high cost and poor stability; 2. The size of the equipment along the axis of the servo motor is larger and will occupy more space; 4. The coupling itself The moment of inertia is large. On the one hand, the acceleration is poor, which greatly restricts the processing speed of the workpiece; on the other hand, the energy consumption during the processing is high.

[0009] Disadvantages: 1. The mechanism is an over-constrained structure, and the deviation of the coaxiality (including parallelism) between the motor shaft end and the crankshaft is inevitable. The deviation of the coaxiality will cause a large internal force of the mechanism, which can easily cause the crankshaft, bearings, etc. Fatigue damage of components, and even "stuck" of the mechanism when the over-constraint is serious; 2. The impact load at the actuator end directly acts on the motor, resulting in large vibration and impact, and vibration and noise during machine tool operation are inevitable

[0012] Disadvantages: During the machining process, the deflection deformation of the crankshaft under the action of punching force is inevitable, which will cause the beating of the crankshaft shaft end, which will lead to the change of the air gap between the rotor and the stator

Images