CN115816156A - A High Precision Machine Tool Temperature Control System - Google Patents

Abstract

The invention relates to a high-precision machine tool temperature control system, which comprises: the three cooling liquid pumps in the water cooler are respectively connected with the three water cooling pipelines, the first water cooling pipeline is connected to a first water diversion block on the front end face of the ram through an X drag chain, a Y drag chain and a Z drag chain, and the shunted cooling liquid cools a motor set in the five-axis pendulum head and then flows back to the water cooler; a second water cooling pipeline is connected to a second water distribution block and a third water distribution block at the top of the sliding plate through an X drag chain and a Y drag chain, and cooling liquid after distribution cools the Y-axis motor assembly and the Z-axis motor assembly and then flows back to the water cooler; the third water cooling pipeline is connected to a fourth water dividing block and a fifth water dividing block at the top end of the cross beam through an X drag chain, and cooling liquid after the water dividing cools the X-axis motor assembly and the machine tool body and then flows back to the water cooler; and flow sensors and pressure sensors are arranged on the three water-cooling pipelines.

Description

A High Precision Machine Tool Temperature Control System

technical field

The invention belongs to the technical field of machine tool temperature control, and relates to a high-precision machine tool temperature control system.

Background technique

The main structure of the high-precision machine tool is a beam-moving column-free AC fork-type swing head machine tool. The beam moves forward and backward along the X direction on the bed, the slide plate moves left and right on the beam along the Y direction, and the ram moves up and down on the slide plate along the Z direction. , The fork-type double swing head is installed at the end of the ram, the A-axis swings around the X direction, and the C-axis rotates around the Z direction, with a five-axis linkage function. The X-axis drive is composed of two sets of dual-motor drive systems to ensure sufficient drive force and motion accuracy for feeding. The Y-axis is equipped with dual-motor components to form a dual-motor anti-backlash mechanism, which enables the machine tool to have good support rigidity and transmission accuracy, thus ensuring good dynamic response performance. There are two sets of Z-axis drives arranged left and right on both sides of the ram. In order to ensure the stability of machine tool operation and machining accuracy, a temperature control system is urgently needed to ensure the thermal stability of multiple drive motors and feed axes of high-precision machine tools.

Contents of the invention

The purpose of the invention is to provide a high-precision machine tool temperature control system, using three coolant pumps in the same water cooler to provide cooling independently and the water cooler to adjust the temperature of the coolant, so as to reduce the heat generated by multiple high-precision machine tools The components are directly cooled to avoid heat transfer to the large parts of the machine tool, prevent thermal deformation of related structural parts, and ensure the stable performance and machining accuracy of high-precision machine tools.

The present invention provides a high-precision machine tool temperature control system, including: a water cooler, a first water-cooling pipeline, a second water-cooling pipeline and a third water-cooling pipeline, and the three coolant pump bodies inside the water cooler are respectively Connect three water-cooling pipelines. The first water-cooling pipeline is connected to the first water diversion block on the front end of the ram through the X drag chain, Y drag chain, and Z drag chain. The motor is cooled, and then flowed back to the water cooler;

The second water cooling pipeline is connected to the second water distribution block and the third water distribution block on the top of the skateboard through the X drag chain and the Y drag chain. flow back to the water cooler;

The third water-cooling pipeline is connected to the fourth water distribution block and the fifth water distribution block at the top of the crossbeam through the X drag chain. The road cools the machine bed, and then flows back to the water cooler; the three water cooling pipes are equipped with flow sensors and pressure sensors.

In the high-precision machine tool temperature control system of the present invention, the coolant in the first water-cooling pipeline flows into the spindle motor coolant inlet on the end face of the five-axis swing head and the cooling fluid of the A-axis motor after being diverted by the first water diversion block. Liquid inlet, A-axis slave motor coolant inlet, and C-axis motor coolant inlet, after cooling the spindle motor, A-axis motor, A-axis slave motor, and C-axis motor, from the spindle motor coolant outlet on the end face of the five-axis swing head, The coolant outlet of the A-axis motor, the coolant outlet of the A-axis slave motor and the coolant outlet of the C-axis motor flow out and then flow back to the water cooler after converging through the first water distribution block.

In the high-precision machine tool temperature control system of the present invention, the second water cooling pipeline is connected to the second water diversion block and the third water diversion block through the first three-way valve; the coolant in the second water cooling pipeline is passed through the second The water diversion block flows into five water cooling circuits. The Y1 axis motor and the Y1 axis reducer are installed on the same water cooling circuit. The Z1 axis motor and the Z1 axis reducer are installed on the same water cooling circuit. The Y axis guide rail slider and the Z1 axis screw rod and the Z1 shaft screw female seat are respectively arranged on a water-cooling circuit, and the cooling liquid in each water-cooling circuit flows back to the water cooler after converging through the second water distribution block;

The coolant in the second water-cooling pipeline flows into five water-cooling circuits after being diverted by the third water distribution block. The Y2-axis motor and the Y2-axis reducer are installed on the same water-cooling circuit, and the Z2-axis motor and Z2-axis reducer are installed on the same water-cooling circuit. On the top, the Z-axis guide rail slider, the Z2-axis screw rod and the Z2-axis screw female seat are respectively arranged on a water-cooling circuit, and the coolant in each water-cooling circuit flows back to the water cooler after converging through the third water distribution block.

In the high-precision machine tool temperature control system of the present invention, the Z1-axis screw rod and the Z2-axis screw rod are hollow structures, and coolant inlets and coolant outlets are arranged at both ends.

In the high-precision machine tool temperature control system of the present invention, the inside of the Z1-axis wire base and the Z2-axis wire base are provided with cooling liquid channels, and the cooling liquid flows into the cooling liquid channel from the liquid inlet on the wire base. The liquid outlet on the screw nut seat flows out.

In the high-precision machine tool temperature control system of the present invention, the third water cooling pipeline is connected to the fourth water distribution block and the fifth water distribution block through the second three-way valve; the cooling liquid in the third water cooling pipeline is passed through the fourth The water diversion block flows into three water cooling circuits. The X1-axis motor and X1-axis reducer are installed on the same water-cooling circuit. The X2-axis motor and X2-axis reducer are installed on the same water-cooling circuit. Above; the coolant in each water-cooling circuit flows back to the water cooler after converging through the fourth water sub-block;

The coolant in the third water cooling pipeline flows into three water cooling circuits after being diverted by the fifth water distribution block. The X3-axis motor and the X3-axis reducer are installed on the same water-cooling circuit, and the X4-axis motor and X4-axis reducer are installed on the same water-cooling circuit. Above, the slide block of the X right-axis guide rail is on a water-cooling circuit; the cooling liquid in each water-cooling circuit flows back to the water cooler after converging through the fifth water sub-block.

In the high-precision machine tool temperature control system of the present invention, pipe grooves are provided on the guide rail slider mounting surface of the slide seat, and cooling pipes are arranged in the pipe grooves. The rail runners are cooled.

In the high-precision machine tool temperature control system of the present invention, bed cooling mechanisms are respectively arranged on both sides of the machine bed, and the bed cooling mechanism is composed of aluminum alloy plates connected in series, and water inlet holes are opened at both ends of the aluminum alloy plates and the return water through hole, and the aluminum alloy plates are connected by pipelines; the third water-cooling pipeline flows out of the cooling branch to connect to the bed cooling mechanism, and the cooling branch is equipped with a one-way valve and a throttle valve.

A high-precision machine tool temperature control system of the present invention has at least the following beneficial effects:

1. In this system, three coolant pump bodies in the same water cooler are used for cooling independently and the temperature of the coolant is adjusted by the water cooler, so as to directly cool down multiple heat-generating components of the high-precision machine tool and avoid heat transfer to the machine tool For large parts, thermal deformation of related structural parts is prevented to ensure stable performance and machining accuracy of high-precision machine tools. A three-way valve is provided on the second water-cooling pipeline and the third water-cooling pipeline to adjust the cooling liquid flow rate in the corresponding water-cooling circuit connected to the water distribution block, so as to adjust the cooling time.

2. The water circulation cooling method used in this system can directly cool down the key heating parts of high-precision machine tools and carry out active temperature control, which can effectively reduce the heat generated by the motor, reducer, bearing, slider, etc. from being transferred to the large parts of the machine tool , reducing the thermal deformation of the structural parts of the machine tool, ensuring the stable performance and machining accuracy of the high-precision machine tool.

Description of drawings

Fig. 1 is the structural representation of a kind of high-precision machine tool temperature control system of the present invention;

1-Water cooler, 2-First water-cooling pipeline, 3-Second water-cooling pipeline, 4-Third water-cooling pipeline, 5-Coolant pump body, 6-First water sub-block, 7-Second sub-division Water block, 8-third water block, 9-fourth water block, 10-fifth water block, 11-flow sensor, 12-pair of spindle motors, 13-A-axis motor, 14-A-axis slave motor , 15-C-axis motor, 16-the first three-way valve, 17-Y1-axis motor, 18-Y1-axis reducer, 19-Z1-axis motor, 20-Z1-axis reducer, 21-Y-axis guide rail slider, 22 -Z1-axis screw, 23-Z1-axis screw female seat, 24-Y2-axis motor, 25-Y2-axis reducer, 26-Z2-axis motor, 27-Z2-axis reducer, 28-Z-axis guide rail slider, 29- Z2-axis screw, 30-Z2-axis female seat, 31-second three-way valve, 32-X1-axis motor, 33-X1-axis reducer, 34-X2-axis motor, 35-X2-axis reducer, 36-X Left-axis guide rail slider, 37-X3-axis motor, 38-X3-axis reducer, 39-X4-axis motor, 40-X4-axis reducer, 41-X right-axis guide rail slider, 42-machine bed, 43-pressure sensor.

Detailed ways

As shown in Fig. 1, a kind of high-precision machine tool temperature control system of the present invention comprises: water cooler 1, first water-cooling pipeline 2, second water-cooling pipeline 3 and the 3rd water-cooling pipeline 4, described water cooling The three coolant pump bodies 5 inside the engine 1 are respectively connected to three water-cooling pipelines, and the first water-cooling pipeline 2 is connected to the first water diversion pipe on the front surface of the ram through the X drag chain, the Y drag chain, and the Z drag chain. Block 6, the cooling liquid cools the motor in the five-axis swing head after being divided, and then flows back to the water cooler 1. The second water cooling pipeline 3 is connected to the second water distribution block 7 and the third water distribution block 8 on the top of the skateboard through the X drag chain and the Y drag chain. Cool, then flow back to the water cooler 1. The third water cooling pipeline 4 is connected to the fourth water distribution block 9 and the fifth water distribution block 10 at the top of the crossbeam through the X drag chain, and the cooling liquid cools the X-axis motor assembly after being divided, and the third water cooling pipeline 4 The branch flows out of the cooling branch to cool the bed 42 of the machine tool, and then flows back to the water cooler 1 . Flow sensors 11 and pressure sensors 43 are provided on the three water-cooling pipelines to facilitate feedback and adjustment of the pressure of each water-cooling pipeline.

The coolant in the first water-cooling pipeline 2 flows into the spindle motor coolant inlet, the A-axis motor coolant inlet, and the A-axis slave motor coolant inlet on the end face of the five-axis swing head after being diverted by the first water diversion block 6 and C-axis motor coolant inlet, after cooling the spindle motor 12, A-axis motor 13, A-axis slave motor 14 and C-axis motor 15, from the spindle motor coolant outlet and A-axis motor coolant outlet on the end face of the five-axis swing head 1. The coolant outlet of the A-axis slave motor and the coolant outlet of the C-axis motor flow out and flow back to the water cooler 1 after converging through the first water distribution block 6 .

The second water cooling pipeline 3 is connected to the second water diversion block 7 and the third water diversion block 8 through the first three-way valve 16 . The coolant in the second water-cooling pipeline 3 flows into five water-cooling circuits after being diverted by the second water diversion block 7. The Y1-axis motor 17 and the Y1-axis reducer 18 are arranged on the same water-cooling circuit. The Z1-axis motor 19 and the Z1-axis reducer 20 is set on the same water-cooling circuit, Y-axis guide rail slider 21, Z1-axis screw rod 22 and Z1-axis screw female seat 23 are respectively set on one water-cooling circuit, and the coolant in each water-cooling circuit passes through the second water distribution block 7 After confluence, flow back to water cooler 1. The coolant in the second water-cooling pipeline 3 flows into five water-cooling circuits after being diverted by the third water-distributing block 8. The Y2-axis motor 24 and the Y2-axis reducer 25 are arranged on the same water-cooling circuit. The Z2-axis motor 26 and the Z2-axis reducer 27 is set on the same water-cooling circuit, and the Z-axis guide rail slider 28, the Z2-axis screw rod 29 and the Z2-axis screw female seat 30 are respectively set on a water-cooling circuit, and the cooling liquid in each water-cooling circuit passes through the third water distribution block 8 After confluence, flow back to water cooler 1.

During specific implementation, the Z1-axis screw rod 22 and the Z2-axis screw rod 29 are hollow structures, and cooling liquid inlets and cooling liquid outlets are provided at both ends of the screw rods. The inside of the Z1 shaft wire base 23 and the Z2 shaft wire base 30 are both provided with coolant passages to realize circulation cooling and heat dissipation. The cooling liquid flows into the cooling liquid passage from the liquid inlet on the screw base, and flows out from the liquid outlet on the screw base.

The third water cooling pipeline 4 is connected to the fourth water diversion block 9 and the fifth water diversion block 10 through the second three-way valve 31 . The coolant in the third water-cooling pipeline 4 flows into three water-cooling circuits after being diverted by the fourth water-distributing block 9. The X1-axis motor 32 and the X1-axis reducer 33 are arranged on the same water-cooling circuit. The X2-axis motor 34 and the X2-axis reducer 35 are located on the same water-cooling circuit, and the X left-axis guide rail slide block 36 is on a water-cooling circuit. The coolant in each water-cooling circuit flows back to the water cooler 1 after converging through the fourth water-distributing block 9 . The coolant in the third water-cooling pipeline 4 flows into three water-cooling circuits after being diverted by the fifth water distribution block 10. The X3-axis motor 37 and the X3-axis reducer 38 are arranged on the same water-cooling circuit. The X4-axis motor 39 and the X4-axis reducer 40 is located on the same water-cooling circuit, and the X right-axis guide rail slider 41 is on a water-cooling circuit. The coolant in each water-cooling circuit flows back to the water cooler 1 after converging through the fifth water sub-block.

During specific implementation, pipe grooves are provided on the guide rail slider mounting surface of the slide seat, and cooling pipes are arranged in the pipe grooves, and the cooling liquid flows through the cooling pipes to cool the X left-axis guide rail slider 36 and the X right-axis guide rail slider 41 .

During specific implementation, bed cooling mechanisms are provided on both sides of the machine bed 42 to control the cooling of the heat generated by the machine bed during operation. While cooling down, it can also take away local heat, keep the thermal stress of the main body of the bed uniform, and prevent local heat accumulation from affecting the accuracy of the machine tool. The bed cooling mechanism is composed of aluminum alloy plates connected in series. The two ends of the aluminum alloy plates are opened with water inlet and return water holes, and the aluminum alloy plates are connected by pipelines; the third water cooling pipeline branches out of the cooling branch It is connected to the bed cooling mechanism, and a check valve and a throttle valve are arranged on the cooling branch.

In the high-precision machine tool temperature control system of the present invention, the three coolant pump bodies in the same water cooler are individually cooled and the temperature of the coolant is adjusted by the water cooler so as to directly cool down the heat-generating parts of the machine tool and avoid heat transfer to On large parts of machine tools, thermal deformation of related structural parts is prevented to ensure stable performance and machining accuracy of high-precision machine tools. A three-way valve is provided on the second water-cooling pipeline and the third water-cooling pipeline to adjust the cooling liquid flow rate in the corresponding water-cooling circuit connected to the water distribution block, so as to adjust the cooling time.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the idea of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the present invention. within the scope of protection.

Claims (8)

1. A high accuracy machine tool temperature control system, comprising: the three cooling liquid pumps in the water cooler are respectively connected with the three water cooling pipelines, the first water cooling pipeline is connected to a first water diversion block on the front end face of the ram through an X drag chain, a Y drag chain and a Z drag chain, and after diversion, cooling liquid cools a motor in the five-axis yaw and then flows back to the water cooler;

the second water cooling pipeline is connected to a second water distribution block and a third water distribution block at the top of the sliding plate through an X drag chain and a Y drag chain, and cooling liquid after distribution cools the Y-axis motor assembly and the Z-axis motor assembly and then flows back to the water cooler;

the third water cooling pipeline is connected to a fourth water dividing block and a fifth water dividing block at the top end of the cross beam through an X drag chain, the divided cooling liquid cools the X-axis motor assembly, and the third water cooling pipeline divides a cooling branch to cool the lathe bed and then flows back to the water cooling machine; and flow sensors and pressure sensors are arranged on the three water-cooling pipelines.

2. The high accuracy machine tool temperature control system of claim 1, wherein the coolant in the first water cooling line is split by the first water splitting block and flows into the spindle motor coolant inlet, the a-axis slave motor coolant inlet, and the C-axis motor coolant inlet on the end face of the five-axis yaw, and flows out of the spindle motor coolant outlet, the a-axis slave motor coolant outlet, and the C-axis motor coolant outlet on the end face of the five-axis yaw after cooling the spindle motor, the a-axis slave motor, and the C-axis motor, and then flows back to the water cooler after being converged by the first water splitting block.

3. The high-precision machine tool temperature control system of claim 1, wherein the second water cooling pipeline is connected with the second water diversion block and the third water diversion block through a first three-way valve; the cooling liquid in the second water cooling pipeline flows into five water cooling loops after being divided by the second water dividing block, the Y1-axis motor and the Y1-axis speed reducer are arranged on the same water cooling loop, the Z1-axis motor and the Z1-axis speed reducer are arranged on the same water cooling loop, the Y-axis guide rail sliding block, the Z1-axis screw rod and the Z1-axis screw nut seat are respectively arranged on one water cooling loop, and the cooling liquid in each water cooling loop flows back to the water cooling machine after converging through the second water dividing block;

the cooling liquid in the second water cooling pipeline flows into five water cooling loops after being divided by the third water dividing block, the Y2-axis motor and the Y2-axis speed reducer are arranged on the same water cooling loop, the Z2-axis motor and the Z2-axis speed reducer are arranged on the same water cooling loop, the Z-axis guide rail sliding block, the Z2-axis screw rod and the Z2-axis screw nut seat are respectively arranged on one water cooling loop, and the cooling liquid in each water cooling loop flows back to the water cooling machine after converging through the third water dividing block.

4. The system as claimed in claim 3, wherein the Z1 axis screw and the Z2 axis screw are hollow, and a cooling liquid inlet and a cooling liquid outlet are provided at both ends.

5. The high-precision machine tool temperature control system as claimed in claim 3, wherein the Z1-axis nut seat and the Z2-axis nut seat are provided with cooling liquid channels inside, and cooling liquid flows into the cooling liquid channels from liquid inlets on the nut seats and flows out from liquid outlets on the nut seats.

6. The high-precision machine tool temperature control system of claim 1, wherein the third water cooling pipeline is connected with a fourth water dividing block and a fifth water dividing block through a second three-way valve; the cooling liquid in the third water cooling pipeline flows into the three water cooling loops after being divided by the fourth water dividing block, the X1-axis motor and the X1-axis speed reducer are arranged on the same water cooling loop, the X2-axis motor and the X2-axis speed reducer are arranged on the same water cooling loop, and the X left-axis guide rail slider is arranged on one water cooling loop; the cooling liquid in each water cooling loop flows back to the water cooling machine after converging through the fourth water dividing block;

the cooling liquid in the third water cooling pipeline flows into the three water cooling loops after being divided by the fifth water dividing block, the X3-axis motor and the X3-axis speed reducer are arranged on the same water cooling loop, the X4-axis motor and the X4-axis speed reducer are arranged on the same water cooling loop, and the X right-axis guide rail slide block is arranged on one water cooling loop; and the cooling liquid in each water cooling loop flows back to the water cooling machine after converging through the fifth water dividing block.

7. The high accuracy machine tool temperature control system of claim 6, wherein the slide has a rail block mounting surface with a channel, and cooling channels are disposed in the channel, and the cooling fluid flows through the cooling channels to cool the left X-axis rail block and the right X-axis rail block.

8. The high-precision machine tool temperature control system according to claim 6, wherein, two sides of the machine tool body are respectively provided with a machine tool body cooling mechanism, the machine tool body cooling mechanism is composed of aluminum alloy plates which are connected in series, two ends of the aluminum alloy plates are provided with a water inlet through hole and a water return through hole, and the aluminum alloy plates are connected by a pipeline; and a third water-cooling pipeline is connected with a cooling branch by a shunting way and is provided with a check valve and a throttle valve.

Images