Temperature control device for cross beam of machine tool

Abstract

The machine tool beam temperature control device comprises a plurality of temperature control modules, a plurality of first temperature sensors and a temperature adjusting unit, the first temperature sensors are distributed at the upper end and the lower end of a machine tool beam, and the temperature adjusting unit comprises a water tank and a temperature adjusting mechanism. The temperature control modules cover the upper end face and the back face of the machine tool beam, each temperature control module comprises a pipeline installation box and a water pipe, the water pipes are arranged in the pipeline installation boxes in a circuitous mode, the water pipes and the water tank are connected to form a circulating temperature control loop, and the first temperature sensors are connected with the temperature adjusting mechanism. The temperature adjusting mechanism is used for adjusting the water temperature in the circulating temperature control loop according to the temperature difference between the upper end and the lower end of the machine tool cross beam. The device adopts modular design, is simple in structure and convenient to mount and maintain, does not change the original structure of the machine tool cross beam, has obvious heat insulation and temperature control effects on the machine tool cross beam, effectively reduces the thermal deformation of the machine tool cross beam, and greatly improves the machining precision of a machine tool.

Description

TECHNICAL FIELD

[0001] The utility model relates to a temperature control device for machine tool, concretely relates to a machine tool beam temperature control device. BACKGROUND

[0002] The beam as one of gantry machine tool frame pieces, its deformation greatly influences the machining accuracy of machine tool. The deformation of beam is mainly caused by the bending and distortion deformation of slide saddle, slide ram and other loads and the irregular thermal deformation caused by uneven distribution of beam temperature field. Research shows that the error caused by machine tool thermal deformation accounts for 40% to 70% of total error of machine tool. The bending and distortion deformation of beam caused by load can be overcome by using reverse deformation processing, but the environmental temperature changes frequently and irregularly, causing uneven distribution of beam temperature field, so it is difficult to control the thermal deformation of beam. SUMMARY

[0003] The utility model solves the technical problem that, aiming at the insufficient of prior art, provide a kind of machine tool beam temperature control device, the device is monitored and temperature control to machine tool beam, solve the irregular thermal deformation problem caused by environmental temperature change to machine tool beam, to greatly improve the machining accuracy of machine tool.

[0004] The utility model provides a kind of machine tool beam temperature control device, including several temperature control modules, several first temperature sensors and temperature adjusting unit, the several first temperature sensors are distributed in the upper end and lower end of machine tool beam, the temperature adjusting unit includes water tank and temperature adjusting mechanism, the several temperature control modules are covered in the upper end surface and back of machine tool beam, each temperature control module includes pipe installation box and water pipe, the water pipe is arranged in the pipe installation box, the water pipe is connected as circulating temperature control loop with the water tank, the several first temperature sensors are connected with the temperature adjusting mechanism respectively, and the temperature adjusting mechanism is used to adjust the water temperature in the circulating temperature control loop according to the temperature difference between the upper end and lower end of machine tool beam.

[0005] The utility model temperature control device, by being covered several temperature control modules in the upper end and lower end of machine tool beam, several temperature control modules play the role of heat insulation and cooling, separate the heat in environment and machine tool beam, reduce the temperature change of machine tool beam, and then reduce the thermal deformation of machine tool beam, while adjusting the water temperature in circulating temperature control loop by temperature adjusting mechanism, reach the cooling or heating effect of machine tool beam, to improve the consistency of the overall temperature of machine tool beam, reduce the irregular thermal deformation of machine tool beam, so that the machining accuracy of machine tool can be greatly improved.

[0006] As preferred, the upper end face and the back face of the machine tool beam are respectively provided with spliced temperature control modules, and the water pipes of two adjacent temperature control modules are connected by a through plate joint installed on the side face of two adjacent pipe installation boxes.

[0007] As preferred, the water pipes of all temperature control modules on the upper end face of the machine tool beam are sequentially connected into a first total water pipe, the water pipes of all temperature control modules on the back face of the machine tool beam are sequentially connected into a second total water pipe, and the two ends of the first total water pipe and the second total water pipe are respectively connected with the water inlet pipe and the water outlet pipe of the water tank through a three-way joint.

[0008] As preferred, the temperature adjusting mechanism comprises a PLC controller, a temperature regulator, a second temperature sensor and two electromagnetic valves, the second temperature sensor is installed in the water tank, one electromagnetic valve is respectively installed on the water inlet pipe and the water outlet pipe of the water tank, and the temperature regulator, the second temperature sensor, the two electromagnetic valves and the first temperature sensors are connected with the PLC controller.

[0009] As preferred, the water pipe in each temperature control module is fixed in the pipe installation box through a pipe clamp, and the pipe installation box is fixed to the machine tool beam through a screw.

[0010] Compared with the prior art, the machine tool beam temperature control device has the following advantages: the machine tool beam temperature control device covers the upper end and the lower end of the machine tool beam with a plurality of temperature control modules, the plurality of temperature control modules play a role in heat insulation and cooling, the heat in the environment is separated from the machine tool beam, the temperature change of the machine tool beam is reduced, and the thermal deformation of the machine tool beam is reduced; meanwhile, the temperature of the circulating temperature control loop is adjusted by the temperature adjusting mechanism, the cooling or heating effect of the machine tool beam is achieved, the consistency of the overall temperature of the machine tool beam is improved, and the irregular thermal deformation of the machine tool beam is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1This is an exploded view of the front structure of the machine tool beam temperature control device installed in the embodiment.

[0012] Fig. 2 This is an exploded view of the rear structure of the machine tool crossbeam temperature control device installation in the embodiment.

[0013] Fig. 3 This is an external view of a temperature control module in one of the embodiments;

[0014] The specific reference numerals in the figure are as follows:

[0015] 1-Temperature control module, 11-Pipe mounting box, 12-Water pipe, 13-Pipe clamp, 14-Pass-through connector, 15-First main water pipe, 16-Second main water pipe, 17-Tee connector, 2-First temperature sensor, 3-Temperature adjustment unit, 31-Inlet water pipe, 32-Outlet water pipe, 4-Machine tool crossbeam. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Components or structures not limited in this invention employ conventional techniques in the art.

[0017] The machine tool beam temperature control device of the embodiment, such as Figs. 1-3 As shown, the machine tool crossbeam 4 includes several temperature control modules 1, several first temperature sensors 2, and a temperature adjustment unit 3. The several first temperature sensors 2 are distributed at the upper and lower ends of the machine tool crossbeam 4. The temperature adjustment unit 3 includes a water tank (not shown in the figure) and a temperature adjustment mechanism. Several temperature control modules 1 are covered on the upper and lower surfaces of the machine tool crossbeam 4. Each temperature control module 1 includes a pipe mounting box 11 and a water pipe 12. The water pipe 12 can be made of steel pipe or aluminum-plastic pipe, etc. The water pipe 12 is fixed in a circuitous manner in the pipe mounting box 11 by pipe clamps 13. The pipe mounting box 11 is fixed to the machine tool crossbeam 4 by screws. The water pipe 12 is connected to the water tank to form a circulating temperature control loop. The temperature adjustment mechanism is used to adjust the water temperature in the circulating temperature control loop according to the temperature difference between the upper and lower ends of the machine tool crossbeam 4.

[0018] In this embodiment, several temperature control modules 1 are spliced ​​on the upper and lower surfaces of the machine tool crossbeam 4. The water pipes 12 of two adjacent temperature control modules 1 are connected by a through-plate connector 14, which is installed on the side of two adjacent pipe mounting boxes 11. All the water pipes 12 of the temperature control modules 1 on the upper surface of the machine tool crossbeam 4 are connected in sequence to form a first main water pipe 15. All the water pipes 12 of the temperature control modules 1 on the lower surface of the machine tool crossbeam 4 are connected in sequence to form a second main water pipe 16. The two ends of the first main water pipe 15 and the second main water pipe 16 are connected to the inlet pipe 31 and outlet pipe 32 of the water tank through a three-way connector 17, respectively.

[0019] In the embodiment, the temperature adjusting mechanism comprises a PLC controller, a temperature regulator, a second temperature sensor, and two electromagnetic valves (not shown in the figure). The second temperature sensor is installed in the water tank. One electromagnetic valve is installed on the water inlet pipe 31 and the water outlet pipe 32 of the water tank, respectively. The temperature regulator, the second temperature sensor, the two electromagnetic valves, and the first temperature sensors 2 are connected to the PLC controller.

[0020] After the temperature control device is installed, the first temperature sensors 2 feed back signals to the PLC controller during use. When the temperature difference between the upper end and the lower end of the machine tool beam 4 exceeds the preset value (for example, 1℃), the PLC controller controls the temperature regulator and the two electromagnetic valves to reduce or increase the water temperature in the circulating temperature control loop, thereby achieving the cooling or heating effect of the machine tool beam 4, improving the consistency of the overall temperature of the machine tool beam 4, and reducing the irregular thermal deformation of the machine tool beam 4. In addition, the temperature control modules 1 play a role in heat insulation and cooling, separating the heat in the environment from the machine tool beam 4, reducing the temperature change of the machine tool beam 4, and further reducing the thermal deformation of the machine tool beam 4.

[0021] The temperature control device has a simple structure, is easy to install and maintain, does not change the original structure of the machine tool beam, has a remarkable heat insulation and temperature control effect on the machine tool beam, effectively reduces the thermal deformation of the machine tool beam, and greatly improves the machining precision of the machine tool.

Claims

1. A machine tool crossbeam temperature control device, characterized in that, The system includes several temperature control modules, several first temperature sensors, and a temperature adjustment unit. The several first temperature sensors are distributed at the upper and lower ends of the machine tool crossbeam. The temperature adjustment unit includes a water tank and a temperature adjustment mechanism. The several temperature control modules are covered on the upper and lower surfaces of the machine tool crossbeam. Each temperature control module includes a pipe mounting box and a water pipe. The water pipe is arranged in a circuitous manner within the pipe mounting box. The water pipe is connected to the water tank to form a circulating temperature control loop. The several first temperature sensors are respectively connected to the temperature adjustment mechanism. The temperature adjustment mechanism is used to adjust the water temperature in the circulating temperature control loop according to the temperature difference between the upper and lower ends of the machine tool crossbeam.

2. The machine tool crossbeam temperature control device according to claim 1, characterized in that, Several temperature control modules are spliced ​​together on the upper and back surfaces of the machine tool beam. The water pipes of two adjacent temperature control modules are connected by a through-plate connector, which is installed on the side of two adjacent pipe mounting boxes.

3. The machine tool crossbeam temperature control device according to claim 2, characterized in that, The water pipes of all temperature control modules on the upper end face of the machine tool crossbeam are connected in sequence to form a first main water pipe, and the water pipes of all temperature control modules on the back side of the machine tool crossbeam are connected in sequence to form a second main water pipe. The two ends of the first main water pipe and the second main water pipe are respectively connected to the inlet pipe and outlet pipe of the water tank through a T-joint.

4. The machine tool beam temperature control device according to claim 1, characterized in that, The temperature regulation mechanism includes a PLC controller, a temperature regulator, a second temperature sensor, and two solenoid valves. The second temperature sensor is installed inside the water tank. One of the solenoid valves is installed on the inlet pipe and the outlet pipe of the water tank. The temperature regulator, the second temperature sensor, the two solenoid valves, and several first temperature sensors are respectively connected to the PLC controller.

5. The machine tool beam temperature control device according to claim 1, characterized in that, The water pipes in each of the temperature control modules are fixed inside the pipe mounting box by pipe clamps, and the pipe mounting box is fixed to the machine tool crossbeam by screws.

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