Spindle box

Abstract

The invention provides a spindle box. A motor bracket (5) is fixedly mounted on the spindle box (1); a motor plate (18) is fixed on the motor bracket (5); a spindle motor (19) is fixed on the motor plate (18); a spindle (12) is directly connected under the spindle motor (19); by using a locking nut (15), a press cover (14) is fixed on the spindle (12); the press cover (14) is fixed together with a transmission sleeve (11) and a spline transmission sleeve (13) so as to form a shaft coupling; a piston (10) is fixed on the motor plate (18); an oil cylinder body (16) and an end cover (17) form an oil cylinder; a photoelectric signal switch (2) and a photoelectric switch (4) are mounted on the motor bracket (5); a signal rod (3) is mounted on the oil cylinder body (16); a bolt (9) is fixed on the oil cylinder body (16); a bolt (7) is fixed on a plate (6); the plate (6) is fixed on the motor bracket (5); and one end of a spring (8) is on the bolt (7) while the other end of the spring (8) is on the bolt (9). The spindle box provided by the invention has the advantages of good heat stability and good machining accuracy.

Description

technical field [0001] The invention relates to a numerical control milling machine, in particular to a spindle box. Background technique [0002] The structure of the spindle box components of CNC milling machines at home and abroad is that the spindle motor drives the spindle to rotate through the synchronous belt, and the tool cylinder is installed above the spindle to realize automatic tool change. [0003] The advantages of belt drive are low noise, low manufacturing cost, and low cost of replacement after damage, but it is easy to damage. The biggest defect is that the belt drive cannot provide a large torque. To be precise, it can hardly increase the torque. If it needs to be larger torque, it is necessary to increase the motor power. [0004] However, it is difficult to realize automatic tool change for the structure type of the main shaft box component in which the main shaft and the main shaft motor are directly connected, and the design and installation requireme...

AI Technical Summary

Problems solved by technology

[0003] The advantages of belt drive are low noise, low manufacturing cost, and low cost of replacement after damage, but it is easy to damage. The biggest defect is that the belt drive cannot provide a large torque. To be precise, it can hardly increase the torque. If it needs to be larger Torque, it is necessary to increase the motor power

[0004] However, the structural type of the spindle box with the direct connection between the spindle and the spindle motor is difficult to realize automatic tool change, and the design and installation requirements are relatively difficult.

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