Direct connection spindle assembling mechanism

Abstract

The invention discloses a direct connection spindle assembling mechanism. The mechanism comprises a spindle box, a spindle sleeve is arranged in the spindle box, a direct connection spindle is fixedlyarranged in the spindle sleeve, a first coupler shaft sleeve is arranged on the top of the direct connection spindle, a motor base is arranged on the spindle box, a main motor is arranged on the motor base, a motor connecting plate is arranged between the main motor and the motor base, the end of the main motor is sleeved with a second coupler shaft sleeve, and the first coupler shaft sleeve andthe second coupler shaft sleeve are jointed; an automatic compensation balance device is arranged on the upper plane of the spindle box, and is used for balancing the weight of the spindle box, and comprises a support, a balance cylinder body and a piston rod are arranged on the support, a floating joint is arranged on the tail of the piston rod, and the floating joint is connected with the spindle box. The direct connection spindle can machine parts in a high-precision high-speed manner, machine tool precision is kept, the weight of the spindle box can be well balanced, and wear of a ball screw of a transmission mechanism is reduced.

Description

technical field [0001] The invention relates to the field of numerical control machining centers, in particular to a direct-coupled spindle assembly mechanism. Background technique [0002] With the continuous progress of construction and technology, my country's CNC machining center industry is developing in the direction of high speed, high efficiency and high precision. The surface fine machining of parts is becoming more and more popular, and the roughness requirements of the processed surface are also increasing, which requires the spindle speed to develop at a high speed above 10,000rpm. At present, the direct-coupled spindle structure is mostly used in high-speed CNC machine tools. It directly connects the main motor shaft and the spindle through a rigid coupling. While the transmission accuracy and mechanical efficiency are high, the high speed also improves the efficiency and quality of parts processing. Therefore, the scope of use is getting wider and wider. The ...

AI Technical Summary

Problems solved by technology

[0004] Mechanical balance: set the weight of the balance block and the headstock to be the same, and then connect the balance block and the headstock with chains or steel ropes. This method will occupy a large installation space and increase the overall weight of the machine tool, and also The total inertia of the spindle box is reduced, so that the speed, acceleration and flexibility of its movement are limited

[0005] Hydraulic balance: apply a thrust equal to it in the opposite direction of the gravity of the headstock. This thrust is completed by the hydraulic cylinder. This method will cause problems such as noise, leakage, vibration and temperature rise. At the same time, when the headstock moves vertically, the speed and acceleration When it is large, it is prone to hydraulic shock and drive overload, and the balance pressure drops rapidly, which cannot meet the requirements of modern rapid processing, so that it cannot protect the transmission parts from wear and tear.

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