Heated tensile test device for environmental reliability test of CNC machine tool spindle

Abstract

The invention relates to the field of numerical control machine tools, in particular to a heating and tensile testing device for testing the reliability of the spindle environment of a numerical control machine tool. The rotating shaft is connected with the box body, and the outer end of the rotating shaft is provided with a drive motor embedded in the box body. The partition divides the box body into a test chamber and a cooling chamber. The side is symmetrically provided with a testing mechanism, the right end of the box is provided with a fan, the fan is provided with an air inlet pipe, the air inlet pipe is provided with a refrigeration mechanism, and the fan is provided with a blow pipe extending into the cooling chamber. A plurality of nozzles are arranged on the blowing pipe, and an exhaust pipe is arranged at the left end of the cooling chamber. The structural arrangement of the device can prevent too much heat loss in the test chamber, reduce energy loss, improve work efficiency, and make the main shaft easy to replace, improve the safety of replacement, and have strong practicability.

Description

technical field [0001] The invention relates to the field of numerically controlled machine tools, in particular to a heating and tensile testing device for testing the environmental reliability of the spindle of the numerically controlled machine tool. Background technique [0002] CNC lathe is a high-precision, high-efficiency automatic machine tool. Equipped with a multi-station turret or a power turret, the machine tool has a wide range of processing performance, and can process complex workpieces such as straight cylinders, oblique cylinders, arcs, and various threads, grooves, worms, etc., with linear interpolation, arc Various compensation functions are interpolated, and it has played a good economic effect in the mass production of complex parts. The machine tool spindle refers to the axis on the machine tool that drives the workpiece or tool to rotate. The main shaft part is usually composed of the main shaft, bearings and transmission parts (gears or pulleys). I...

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Problems solved by technology

[0003] Chinese patent (Notice No. CN210166136U) discloses a heating and tensile testing device for the spindle of a CNC machine tool, which is equipped with a movable chuck and a fixed chuck, making it easier to clamp a cylindrical CNC machine tool spindle; obviously this device is used to measure the high temperature state of the spindle of a CNC machine tool When lowering the stretching amount, first use the movable chuck and the fixed chuck to clamp the spindle of the CNC machine tool, and then start the heater to heat the air inside the incubator. The temperature in the box, through the rotation of the large gear, drives the gear shaft and the pinion to rotate, and then drives the transmission rod, the moving rod and the moving chuck to move to the left, records the distance moved by the transmission rod, and records the value of the tension display device; solve the problem There is a technical problem that the tensile test of the CNC machine tool spindle under high temperature cannot be performed in the technology; although the device can realize the tensile test of the spindle, it needs to open the box and replace the spindle after the test of a spindle is completed. The next spindle is replaced, but the device is not equipped with a cooling mechanism. During the replacement, the temperature of the spindle is too high, which is easy to cause damage to the staff, and after the box is opened, the heat will be lost quickly, and it needs to be reheated, which not only affects the work efficiency, and waste of energy

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