A multi-drive precision transmission temperature control test platform and its temperature control test method

Abstract

This invention discloses a multi-drive precision transmission temperature control test platform and its temperature control testing method, relating to the field of precision mechanical testing and temperature control technology. It includes a bed assembly, a worktable assembly, a transmission assembly, and a comprehensive testing system assembly. The bed assembly has pre-installed heat dissipation pipes forming a first temperature control pipeline network. The worktable assembly has uniformly distributed liquid channels forming a second temperature control pipeline network. The worktable assembly is slidably connected to the upper surface of the bed assembly. The first and second temperature control pipeline networks form a temperature control pipeline network. The transmission assembly includes a drive source, which is either a ball screw module or a linear motor module. The comprehensive testing system assembly includes a temperature control system. This invention provides a convenient and precise temperature control test platform capable of accurately regulating the temperature of the bed and worktable.

Description

Technical Field

[0001] This invention relates to the field of precision mechanical testing and temperature control technology, specifically to a multi-drive precision transmission temperature control test platform and its temperature control test method. Background Technology

[0002] In modern high-end equipment manufacturing, precision machining, semiconductor manufacturing, and aerospace fields, extremely stringent requirements are placed on the positioning accuracy, repeatability, and long-term operational stability of machine tools and precision motion platforms. As a core moving component, the transmission system's performance directly affects the overall machining quality and reliability of the equipment. Ball screws and linear motors are two of the most mainstream forms of precision linear transmission. The former has advantages such as high rigidity and large thrust, while the latter possesses characteristics of high speed, high acceleration, and contactless transmission.

[0003] However, both ball screws and linear motors generate heat during actual operation. The frictional heating of ball screws and the copper and iron losses of linear motors lead to uneven thermal deformation in the transmission system and its load-bearing structures (such as the bed and worktable). This deformation of the mechanical structure caused by temperature field changes is a key factor affecting the positioning accuracy and stability of precision equipment, often referred to as "thermal error," which can contribute 40%-70% of the total machine tool error.

[0004] To study and suppress thermal errors, the industry typically needs to test and analyze the thermal performance of transmission systems (i.e., their accuracy and dynamic characteristics under temperature variations). Currently, common testing methods are mostly limited to simple temperature rise observations of a single transmission type (such as testing only the lead screw or only the motor), or placing the test object in an environmental chamber for overall temperature regulation, lacking the ability to actively, accurately, and independently control the temperature of the core load-bearing structure. Existing technical solutions mainly have the following shortcomings: The test platform has poor versatility: Most test benches have a fixed structure and are designed only for a specific type of transmission. It is not convenient to replace and compare the thermal performance of two different transmission types, ball screws and linear motors, on the same benchmark platform. The test results are greatly affected by the differences in the platform's own structure and are not very comparable.

[0005] Temperature control methods are crude and inefficient: Traditional temperature control methods mostly rely on external heating or cooling, or simple air cooling or water cooling. The temperature control accuracy is low, the response is slow, and it is difficult to accurately and directionally regulate the temperature inside large basic components such as the bed and workbench.

[0006] Unsystematic thermo-mechanical coupling data acquisition: During testing, temperature data and mechanical motion accuracy data (such as displacement and positioning errors) are often acquired independently by different systems, resulting in poor time synchronization. This makes it difficult to accurately analyze the real-time thermal deformation patterns and transmission performance degradation processes under specific temperature fields, hindering in-depth research on thermal error mechanisms.

[0007] Therefore, there is an urgent need for a new, high-precision temperature control test platform and temperature control testing method that can overcome the above-mentioned defects, realize flexible switching of multiple transmission forms, independent and precise temperature control of key structural components, and synchronous acquisition and comprehensive analysis of thermo-mechanical data, thereby providing efficient and reliable test benchmarks and data support for the thermal design, thermal error compensation and control strategy research of precision transmission systems. Summary of the Invention

[0008] To address the lack of versatility in existing technologies, this invention specifically proposes a temperature control test platform and method integrating multiple drive types, enabling precise temperature control and thermal deformation characteristic analysis. This device innovatively employs an interchangeable transmission structure design, modularizing either the ball screw module or the linear motor module, allowing for flexible selection based on test requirements. The purpose of this invention is to provide a multi-drive precision transmission temperature control test platform and its temperature control test method to solve the problems mentioned in the background technology.

[0009] This invention provides a multi-drive precision transmission temperature control test platform to solve the problem of crude and inefficient temperature control methods in test platforms. It includes a bed assembly, a worktable assembly, a transmission assembly, and a comprehensive test system assembly. The bed assembly has pre-installed heat dissipation pipes forming a first temperature control pipeline network. The bed assembly is equipped with a transmission mounting surface, a set of linear guides, several temperature sensor mounting holes, several threaded holes for connecting temperature control medium pipelines, a grating ruler mounting surface, a set of anti-collision blocks, several virtual impact load generator mounting holes, and threaded mounting holes on the transmission mounting surface. The worktable assembly has uniformly distributed liquid channels forming a second temperature control pipeline network. The worktable assembly is slidably connected to the upper surface of the bed assembly, and the first and second temperature control pipeline networks form a temperature control pipeline network. The worktable assembly is equipped with multiple plugs, anti-collision bosses, grating ruler reading heads, and... Several simulated load mounting holes; the transmission assembly is installed in the transmission area of ​​the bed assembly corresponding to the movement of the worktable assembly. The transmission assembly includes a drive source, which is either a ball screw module or a linear motor module. The output end of the linear motor module is driven by a linear motor mover, and the output end of the ball screw module is driven by a ball screw nut. The worktable assembly can be replaced with a nut seat for connecting the ball screw nut or a mover mounting plate for connecting the linear motor mover. The nut seat or mover mounting plate has a second drill hole inside, which is set as a series or parallel channel and connected to the second temperature control pipeline network in series. The comprehensive test system assembly includes a temperature control system, a heat exchanger, several temperature sensors, and a data acquisition processor. The temperature control system includes an oil pump, a circulation pipeline, a flow regulating valve, and a temperature controller. The circulation pipeline and the temperature control pipeline network constitute a first type of closed-loop temperature control system.

[0010] The present invention further illustrates that a set of linear guides are arranged in parallel on both sides of the transmission assembly surface in the transmission direction, and a linear slider is provided at the bottom surface of the worktable assembly facing the linear guides, and the linear slider and the linear guides form a sliding pair.

[0011] The present invention further explains that a number of temperature sensor mounting holes and a number of temperature control medium pipeline connection threaded holes are respectively opened on the side adjacent to the bed assembly. Temperature sensors are installed on the temperature sensor mounting holes, and the grating ruler mounting plane is set on the side surface of the bed assembly parallel to the transmission direction of the transmission assembly surface.

[0012] The present invention further explains that a set of anti-collision blocks are disposed on the other side surface of the bed assembly parallel to the transmission direction of the transmission assembly surface. The set of anti-collision blocks are located inside the transmission area of ​​the bed assembly and are used to limit the displacement of the worktable assembly in the transmission direction.

[0013] The present invention further explains that the grating ruler reading head is installed on the bottom surface of the workbench assembly near the grating ruler mounting plane, and the anti-collision protrusion is installed on the bottom surface of the workbench assembly at a position parallel to the grating ruler reading head. The anti-collision protrusion and the anti-collision block are arranged on the same side and form a mechanical hard limit structure.

[0014] The present invention further illustrates that the first temperature control pipeline network adopts a dense serpentine or layered grid layout, covering the main structure of the bed assembly.

[0015] The present invention further explains that the ball screw module has a hollow cooling channel inside the screw, and the ends of the hollow cooling channel are respectively provided with a coolant inlet and a coolant outlet. The circulation pipeline is connected to the temperature control pipeline network and the hollow cooling channel to form a second closed-loop temperature control system.

[0016] A temperature control testing method for a multi-drive precision transmission temperature control test platform includes the following steps: Step S01: Based on the test objective, select the drive source for the transmission component and correctly install it between the bed component and the worktable component, and connect it to the integrated measurement and control system component; Step S02: Start the temperature control system through the integrated measurement and control system components, introduce a constant temperature medium at the set temperature into the first temperature control pipeline network and the second temperature control pipeline network, and introduce coolant into the hollow cooling channel of the transmission component to make the test platform reach a thermal equilibrium state. Step S03: Control the temperature control system to maintain a constant temperature or adjust it according to a preset temperature curve; control the transmission components to operate according to a preset motion mode; Step S04: Synchronously collect motion data, drive current or drive force data of the transmission component, and temperature data of temperature sensors arranged on the bed component and worktable component using the integrated measurement and control system components. Based on the collected multi-source data, analyze the performance indicators of the transmission component under thermal equilibrium or variable temperature conditions.

[0017] The present invention further illustrates that step S03 also includes triggering the simulated impact load component installed on the mounting hole of the virtual impact load generator during the movement.

[0018] The present invention further explains that the performance indicators in step S04 include positioning accuracy, repeatability, thermal deformation error, and dynamic response characteristics.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention constructs a temperature control network covering the core structural components by pre-installing a dense, serpentine or layered grid-like first temperature control pipeline network inside the bed assembly and a uniformly penetrating second temperature control pipeline network inside the worktable assembly. This network, together with the temperature control system, heat exchanger, and temperature sensors, forms a closed-loop temperature control system. This system enables convenient, precise, and independent temperature regulation of large basic components such as the bed and worktable, effectively solving the problems of inefficiency and inefficient traditional temperature control methods and achieving precise zoned temperature control. This invention enables rapid and repeatable disassembly and replacement of two mainstream transmission methods: ball screws and linear motors. It integrates multiple drive methods, improving the versatility and comparability of the test platform. The experimental platform of this invention integrates a high-precision grating ruler, a temperature sensor, and multiple types of sensors, and uses a comprehensive measurement and control system component to achieve simultaneous motion control, temperature control and data acquisition, thereby improving the accuracy of experimental data. The virtual impact load generator mounting holes reserved on the test platform of this invention allow dynamic loads that simulate cutting forces or inertial forces to be applied during movement. Combined with the temperature control system, it can more realistically simulate the complex thermo-mechanical conditions of machine tools in actual processing. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the test platform according to Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the bed assembly structure according to Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the workbench assembly with a moving part mounting plate according to Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the worktable assembly with a wire nut in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the transmission component structure according to Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the first temperature control pipeline network structure in Embodiment 2 of the present invention; Figure 7 This is a schematic diagram of the second temperature control pipeline network structure in Embodiment 2 of the present invention; In the diagram: 1. Bed assembly; 101. First temperature control piping network; 102. Transmission assembly surface; 103. Linear guide rail; 104. Temperature sensor mounting hole; 105. Temperature control medium pipeline connection threaded hole; 106. Grating ruler mounting plane; 107. Anti-collision block; 108. Virtual impact load generator mounting hole; 2. Worktable assembly; 201. Second temperature control piping network; 202. Plug; 203. Linear slider; 204. Wire 214. Female seat; 205. Mover mounting plate; 206. Anti-collision boss; 207. Grating ruler reading head; 208. Simulated load mounting hole; 209. Temperature control medium inlet hole; 2000. Temperature control medium outlet hole; 3. Transmission assembly; 30. Ball screw module; 301. Ball screw nut; 302. Coolant inlet hole; 303. Coolant outlet hole; 31. Linear motor module; 311. Linear motor mover; 4. Comprehensive test system components. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0023] The implementation of the present invention will be described in detail below. This embodiment is implemented based on the technical solution of the present invention, and provides detailed implementation methods and specific operation processes. However, the protection scope of the present invention is not limited to the following embodiment.

[0024] Example 1: This example provides an overall structure for a multi-drive precision transmission temperature control test platform, such as... Figures 1 to 5As shown, the platform comprises four main parts: bed assembly 1, worktable assembly 2, transmission assembly 3, and integrated testing system assembly 4. It aims to provide a universal and controllable thermal performance testing benchmark for two mainstream precision transmission methods: ball screws and linear motors. Transmission assembly 3 is installed in the transmission area on the upper surface of bed assembly 1. The output end of transmission assembly 3 is connected to worktable assembly 2, driving it to move in a linear direction. Worktable assembly 2 is slidably connected to bed assembly 1. Integrated testing system assembly 4 includes a temperature control system, a heat exchanger, several temperature sensors, and a data acquisition processor. The data acquisition processor connects to each sensor, enabling real-time monitoring of temperature changes at various points and automatic adjustment of the flow rate and temperature of the temperature control medium based on a preset temperature curve, thereby achieving closed-loop precise control of the test environment.

[0025] Specifically, such as Figure 2 As shown, the bed components of the bed assembly 1 are made of artificial cast stone material and have pre-installed heat dissipation pipes inside. A transmission assembly surface 102 is provided in the middle of the transmission area on the upper surface of the bed assembly 1. Linear guide rails 103 are provided on both sides parallel to the transmission direction of the transmission assembly surface 102. The plane height of the linear guide rails 103 is higher than the plane height of the transmission assembly surface 102. The transmission assembly surface 102 is provided with two sets of mounting threaded holes of different specifications. The linear guide rails 103 are used to form a sliding pair with the worktable assembly 2. Several temperature sensor mounting holes 104 and several temperature control medium pipeline connection threaded holes 105 are respectively opened on the side adjacent to the bed assembly 1 for connecting the temperature control system and forming a closed-loop temperature control system to realize real-time monitoring and precise control of the temperature of the transmission area. Temperature sensors are installed on the temperature sensor mounting holes 104 respectively. The bed assembly 1 also includes an adjustment shim mounting surface for installing adjustment shims, the other end of which is fixed to the ground for supporting the installation and leveling of the test platform.

[0026] A grating ruler mounting plane 106 is provided on one side of the bed assembly 1 parallel to the transmission assembly surface 102 in the transmission direction. After the grating ruler is installed, the displacement of the worktable assembly 2 is detected and closed-loop control is performed. A set of anti-collision blocks 107 is provided on the other side of the bed assembly 1 parallel to the transmission assembly surface 102 in the transmission direction. The set of anti-collision blocks 107 is located inside the transmission area of ​​the bed assembly 1 and is used to limit the displacement of the worktable assembly 2 in the transmission direction to avoid runaway accidents. Several virtual impact load generator mounting holes 108 are also provided on the side of the bed assembly 1 where the temperature control medium pipeline connection thread hole 105 is opened. This is used to install simulated impact load components according to the test requirements of impact resistance performance, thereby simulating instantaneous external force interference. The simulated impact load components are bolted to the front and rear sides of the bed assembly 1 and generate a rapid impact force on the worktable assembly 2 through an electric cylinder to simulate impact load.

[0027] like Figure 3 as well as Figure 4 As shown, the workbench assembly 2 is made of cast iron; several interconnected drill holes are opened inside the workbench assembly 2, and multiple plugs 202 are provided on the workbench assembly 2 to block part of the channels of the drill holes, so as to form liquid channels.

[0028] Specifically, a linear slider 203 is provided on the bottom surface of the worktable assembly 2 facing the linear guide rail 103. The linear slider 203 and the linear guide rail 103 form a sliding pair, so that the worktable assembly 2 can be slidably connected to the upper surface of the bed assembly 1. A grating ruler reading head 206 is installed on the bottom surface of the worktable assembly 2 near the grating ruler mounting plane 106. An anti-collision protrusion 205 is installed on the bottom surface of the worktable assembly 2 parallel to the grating ruler reading head 206. The anti-collision protrusion 205 is provided on the same side as the anti-collision block 107, and the anti-collision protrusion 205 and the anti-collision block 107 on the bed assembly 1 form a mechanical hard limit structure. The top surface of the workbench assembly 2 is provided with several simulated load mounting holes 207 for installing load blocks of corresponding mass according to the test requirements. The load blocks can be installed on the workbench assembly 2 by bolts. Increasing or decreasing the load weight can simulate the inertia of moving parts of different weights.

[0029] Furthermore, the transmission assembly 3 is mounted on the transmission assembly surface 102. A screw nut 204 or a mover mounting plate 214 is fixedly connected to the center of the surface of the worktable assembly 2 facing the transmission assembly 3. When the screw nut 204 is fixedly connected, the transmission assembly 3 adopts a ball screw module 30. When the mover mounting plate 214 is fixedly connected, the transmission assembly 3 adopts a linear motor module 31. like Figure 5 As shown, the transmission assembly 3 includes a drive source, which has two transmission methods: a ball screw module 30 and a linear motor module 31. The output end of the ball screw module 30 is connected to a ball screw nut 301, and the output end of the linear motor module 31 is connected to a linear motor mover 311. The transmission assembly 3 can be driven by either the ball screw module 30 or the linear motor module 31 to achieve performance testing and comparative analysis of different transmission forms on the same test platform.

[0030] The ball screw module 30 has a hollow cooling channel inside the screw. The ends of the hollow cooling channel are respectively provided with a coolant inlet hole 302 and a coolant outlet hole 303. The coolant can enter the hollow cooling channel through the coolant inlet hole 302 and flow out through the coolant outlet hole 303. The ball screw nut 204 or the mover mounting plate 214 has a drilled hole inside to prevent the heat of the ball screw nut 301 or the linear motor mover 311 from being transferred to the worktable, thus achieving the function of heat insulation.

[0031] The aforementioned temperature control system includes an oil pump, a circulation pipeline, a flow regulating valve, and a temperature controller. The temperature control system uses a constant temperature medium to maintain the temperature of the worktable assembly 2 and the bed assembly 1. Driven by the oil pump, the constant temperature medium flows through the internal channels of the bed assembly 1 and the worktable assembly 2 via the circulation pipeline. After absorbing heat, it returns to the heat exchanger for cooling. The temperature controller adjusts the opening of the flow regulating valve and the power of the oil pump in real time based on sensor feedback, thereby maintaining the set temperature of the key structural parts of the platform. The temperature controller has multi-channel independent control and data acquisition functions, and can set, monitor, and record the temperature of the bed assembly 1 and the worktable assembly 2 separately. It can also perform programmed temperature control according to a preset temperature curve.

[0032] Example 2: As Figures 6 to 7 As shown, this embodiment, based on embodiment 1, further details the integrated temperature control pipeline network design inside the bed assembly 1 and the worktable assembly 2 to solve the problem of rough temperature control in large basic components.

[0033] The heat dissipation pipes form a first temperature control piping network 101, used for temperature control during cooling or heating processes. The first temperature control piping network 101 employs a dense serpentine or layered grid layout to achieve a sufficiently large temperature control area, covering the main structure of the bed assembly 1. Preferably, the first temperature control piping network 101 is located near heat-sensitive or heat source areas, including but not limited to the mounting surface of the guide rail 103. By introducing media of different temperatures into the first temperature control piping network 101, overall temperature uniformity and control can be achieved for this large foundation component, the bed assembly 1, simulating the foundation deformation caused by the environment in an actual machine tool.

[0034] The liquid channels form a second temperature control pipeline network 201, which runs evenly through the workbench assembly 2 to ensure the uniformity of temperature control and response speed.

[0035] The side wall of the workbench assembly 2 is provided with a temperature-controlled medium inlet hole 208 and a temperature-controlled medium outlet hole 209 for matching the flow of medium in the liquid channel. The temperature-controlled medium inlet hole 208 and the temperature-controlled medium outlet hole 209 are the interfaces for connecting the second temperature-controlled pipeline network 201 to the outside.

[0036] Among them, borehole two and the second temperature control pipeline network 201 (such as...) Figure 7 The red lines shown in the diagram are connected; the second borehole is set as a series or parallel channel and connected in series to the second temperature control pipeline network 201; the first temperature control pipeline network 101 and the second temperature control pipeline network 201 are arranged inside the bed assembly 1 and the worktable assembly 2, which support the whole-domain temperature control with temperature control media such as oil or water.

[0037] Specifically, the piping configuration of the closed-loop temperature control system is as follows: ① For linear motor module 31, the mover mounting plate 214 forms a built-in linear motor mounting base cooling pipe through drilling hole two (e.g. Figure 7 (As shown by the blue lines), the cooling pipes of the linear motor mounting base are connected in series on the second temperature control pipe network 201. The cooling water circuit directly cools the motor, and an independent cooling water jacket is provided above it to effectively isolate the heat generated by the motor during operation from being conducted to the workbench. The above circulation pipes, together with the first temperature control pipe network 101 and the second temperature control pipe network 201 that form an integrated temperature control pipe network, constitute a closed-loop temperature control system suitable for linear motors, namely the first type of closed-loop temperature control system. ② For the ball screw module 30, a hollow cooling channel, a coolant inlet hole 302, and a coolant outlet hole 303 are opened inside the screw. The nut seat 204 forms an internal parallel cooling pipe circuit through a second drill hole (e.g., Figure 7 (As shown by the green lines) The cooling pipes of the ball screw nut are connected in series on the second temperature control pipe network 201. Active heat dissipation can be achieved through internal circulating coolant. The connection surface between the ball screw nut 204 and the worktable assembly 2 is provided with a channel. The temperature control medium flowing in the worktable assembly 2 can flow into and out of the ball screw nut 204 through the channel. The above circulating pipes, together with the first temperature control pipe network 101, the second temperature control pipe network 201, and the hollow cooling channel forming an integrated temperature control pipe network, constitute a closed-loop temperature control system suitable for ball screws, namely the second type of closed-loop temperature control system.

[0038] Example 3: This example describes in detail the temperature control test method of a multi-drive precision transmission temperature control test platform of the present invention, which is based on the temperature control test platform of Example 2 and includes the following steps: Step S01: Based on the test objective, select the drive source of the transmission component 3 and correctly install it between the bed component 1 and the worktable component 2, and connect the integrated test system component 4.

[0039] Furthermore, according to the load requirements of the test, a load block of appropriate mass is installed on the simulated load mounting hole 207; if it is necessary to test the impact resistance performance, a simulated impact load assembly is installed on the simulated impact load mounting hole 108.

[0040] Step S02: Start the temperature control system through the integrated measurement and control system component 4, and not only introduce the constant temperature medium at the set temperature into the first temperature control pipeline network 101 inside the bed component 1 and the second temperature control pipeline network 201 inside the worktable component 2, but also introduce coolant into the hollow cooling channel of the transmission component 3; keep the transmission component 3 stationary or running at low speed so that the test platform reaches a thermal equilibrium state at the set temperature.

[0041] Step S03: Control the temperature control system to maintain a constant temperature or adjust it according to a preset temperature curve; control the transmission component 3 to operate according to a preset motion mode, including but not limited to continuous reciprocating motion, different speed or acceleration combinations, and positioning; during the motion, trigger the simulated impact load component according to the program to simulate instantaneous external force interference.

[0042] Step S04: Use the integrated measurement and control system component 4 to synchronously collect motion data, drive current or drive force data, and temperature data from temperature sensors arranged on the bed component 1 and the worktable component 2 of the transmission component 3; based on the collected multi-source data, analyze the positioning accuracy, repeatability, thermal deformation error and dynamic response characteristics of the transmission component 3 under thermal equilibrium or temperature change conditions, and realize the test and comparative analysis of the thermal performance of different drive forms. Step S04 also includes modifying the operating parameters and recording the temperature control performance of the temperature control test platform under different operating parameters.

Claims

1. A multi-drive precision transmission temperature control test platform, characterized in that: include: The bed assembly (1) has a heat dissipation pipe inside, which forms a first temperature control pipeline network (101); the bed assembly (1) is provided with a transmission assembly surface (102), a set of linear guide rails (103), a number of temperature sensor mounting holes (104), a number of temperature control medium pipeline connection threaded holes (105), a grating ruler mounting surface (106), a set of anti-collision blocks (107), a number of virtual impact load generator mounting holes (108) and mounting threaded holes opened on the surface of the transmission assembly surface (102); The workbench assembly (2) has a liquid channel uniformly running through its interior, which forms a second temperature control pipeline network (201). The workbench assembly (2) is slidably connected to the upper surface of the bed assembly (1). The first temperature control pipeline network (101) and the second temperature control pipeline network (201) form a temperature control pipeline network. The workbench assembly (2) is provided with multiple plugs (202), anti-collision protrusions (205), grating ruler reading heads (206), and several simulated load mounting holes (207). A transmission assembly (3) is installed in the transmission area of ​​the bed assembly (1) corresponding to the movement of the worktable assembly (2). The transmission assembly (3) includes a drive source, which is either a ball screw module (30) or a linear motor module (31). The output end of the linear motor module (31) is connected to a linear motor mover (311), and the output end of the ball screw module (30) is connected to a ball screw nut (301). The worktable assembly (2) is alternatively equipped with a nut seat (204) for connecting the ball screw nut (301) or a mover mounting plate (214) for connecting the linear motor mover (311). The nut seat (204) or the mover mounting plate (214) has a second drill hole inside. The second drill hole is configured as a series or parallel channel and connected in series to the second temperature control pipeline network (201). The integrated test system component (4) includes a temperature control system, a heat exchanger, several temperature sensors and a data acquisition processor. The temperature control system includes an oil pump, a circulation pipeline, a flow regulating valve and a temperature controller. The circulation pipeline and the temperature control pipeline network constitute a first type of closed-loop temperature control system.

2. The multi-drive precision transmission temperature control test platform according to claim 1, characterized in that: A set of linear guides (103) are arranged in parallel on both sides of the transmission assembly surface (102) in the transmission direction. The worktable assembly (2) is provided with a linear slider (203) facing the bottom surface of the linear guide (103). The linear slider (203) and the linear guide (103) form a sliding pair.

3. The multi-drive precision transmission temperature control test platform according to claim 1, characterized in that: The plurality of temperature sensor mounting holes (104) and the plurality of temperature control medium pipeline connection threaded holes (105) are respectively opened on the side adjacent to the bed assembly (1). Temperature sensors are installed on the temperature sensor mounting holes (104). The grating ruler mounting plane (106) is set on the side surface of the bed assembly (1) parallel to the transmission assembly surface (102) in the transmission direction.

4. The multi-drive precision transmission temperature control test platform according to claim 1, characterized in that: A set of anti-collision blocks (107) is disposed on the other side surface of the bed assembly (1) parallel to the transmission assembly surface (102) in the transmission direction. The set of anti-collision blocks (107) is located inside the transmission area of ​​the bed assembly (1) to limit the displacement of the worktable assembly (2) in the transmission direction.

5. The multi-drive precision transmission temperature control test platform according to claim 1, characterized in that: The grating ruler reading head (206) is installed on the bottom surface of the workbench assembly (2) near the grating ruler mounting plane (106). The anti-collision boss (205) is installed on the bottom surface of the workbench assembly (2) at a position parallel to the grating ruler reading head (206). The anti-collision boss (205) and the anti-collision block (107) are arranged on the same side and form a mechanical hard limit structure.

6. The multi-drive precision transmission temperature control test platform according to claim 1, characterized in that: The first temperature control pipeline network (101) adopts a dense serpentine or layered grid layout, covering the main structure of the bed assembly (1).

7. A multi-drive precision transmission temperature control test platform according to any one of claims 1-6, characterized in that: The ball screw module (30) has a hollow cooling channel inside the screw. The ends of the hollow cooling channel are respectively provided with a coolant inlet (302) and a coolant outlet (303). The circulation pipeline is connected to the temperature control pipeline network and the hollow cooling channel to form a second closed-loop temperature control system.

8. The temperature control test method for a multi-drive precision transmission temperature control test platform according to claim 7, characterized in that: Includes the following steps: Step S01: According to the test purpose, select the drive source of the transmission component (3) and correctly install it between the bed component (1) and the worktable component (2), and connect the integrated measurement and control system component (4). Step S02: Start the temperature control system through the integrated measurement and control system component (4), introduce the constant temperature medium of the set temperature into the first temperature control pipeline network (101) and the second temperature control pipeline network (201), and introduce coolant into the hollow cooling channel of the transmission component (3) so that the test platform reaches the thermal equilibrium state. Step S03: Control the temperature control system to maintain a constant temperature or adjust it according to the preset temperature curve; control the transmission component (3) to operate according to the preset motion mode; Step S04: Use the integrated measurement and control system component (4) to synchronously collect motion data, drive current or drive force data of the transmission component (3), and temperature data of temperature sensors arranged on the bed component (1) and the worktable component (2). Based on the collected multi-source data, analyze the performance indicators of the transmission component (3) under thermal equilibrium or variable temperature conditions.

9. The temperature control test method for a multi-drive precision transmission temperature control test platform according to claim 8, characterized in that: Step S03 further includes triggering a simulated impact load assembly installed on the virtual impact load generator mounting hole (108) during the movement.

10. The temperature control test method for a multi-drive precision transmission temperature control test platform according to claim 8, characterized in that: The performance indicators in step S04 include positioning accuracy, repeatability, thermal deformation error, and dynamic response characteristics.

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