What Is a Lathe Headstock?

The headstock is an important part of the machine tool. It is used to arrange the working spindle of the machine tool, its transmission parts and corresponding additional mechanisms. The headstock is a complex transmission component, including the main shaft assembly, the reversing mechanism, the transmission mechanism, the braking device, the operating mechanism and the lubrication device. Its main function is to support and rotate the main shaft, to realize the functions of starting, braking, shifting and reversing the main shaft.

Multi-stage headstock

Bidirectional multi-plate friction clutch, brake and operating mechanism thereof

1) Bidirectional multi-plate friction clutch. As shown in Figure 3-3, the two-way multi-plate friction clutch is installed in

Spindle box spindle brake mechanism failure

1) The brake solenoid valve is malfunctioning.

Measures to be taken: Check whether the electromagnet YT6 is energized and energized. If not, check the electrical wiring;

Figure 5-27

The headstock is in contact with the bed by the bottom plane and the side of the bump to ensure its correct installation position. The bottom surface is used to control the parallelism error between the spindle axis and the bed rail in the vertical plane; the side of the bump is used to control the parallelism error between the spindle axis and the bed rail in the horizontal plane. The installation of the headstock is mainly to ensure the parallelism of these two directions. During installation, measure and adjust as shown in Figure 5-27. The spindle hole is inserted into the inspection mandrel, and the indicator base is sucked on the slide of the tool holder, and is measured on the upper prime line and the lateral prime line.

The installation requirements are: the upper prime line is 0.03mm / 300mm, only the outer end of the mandrel is allowed to be lifted upwards (commonly known as the "head-up"), and the joint surface is scraped if it is too bad; The mandrel is biased towards the operator (commonly known as "ligo"). In case of excessive tolerances, the side of the bump is scraped to meet the requirements.

In order to eliminate the influence of the error of the inspection mandrel itself on the measurement, the main shaft is rotated 180 degrees during the measurement ^. Take two measurements. Half the algebraic difference between the two measurements is the parallelism error. ^[4]