A middle box structure for high-precision CNC machine tools

Abstract

The invention relates to the field of middle boxes of numerically controlled machine tools, and discloses a middle box structure of a high-precision numerically controlled machine tool, comprising a box body installed in the numerically controlled machine tool, the middle box structure also comprising an X-axis slide rail fixed on the box body, an X-axis slide seat slidably installed on the X-axis slide rail, a Y-axis slide rail fixed on the box body, a Y-axis slide seat slidably installed on the Y-axis slide rail, a main frame fixed on the Y-axis slide seat, a Z-axis slide rail fixed on the main frame, and a Z-axis slide seat slidably installed on the Z-axis slide rail; a cleaning component for cleaning machining debris on the surface of the slide rail to reduce sliding friction is fixedly installed on the X-axis slide seat, the Y-axis slide seat, and the Z-axis slide seat; when the slide seat in the middle box structure moves and adjusts on the slide rail, the cleaning component can clean the machining debris adsorbed on the surface of the slide rail, and cool down the surface of the slide rail, so as to avoid thermal deformation and damage caused by friction between the slide rail and the slide seat.

Description

Technical Field

[0001] The invention relates to the field of middle boxes for numerically controlled machine tools, and in particular to a middle box structure for high-precision numerically controlled machine tools. Background Art

[0002] The middle box structure of CNC machine tools is an important component of the machine tool. The middle box structure is equipped with components that move along the X-axis, Y-axis and Z-axis directions, and move and adjust the positions of tools and workpieces in three directions. The spindle box in the middle box structure usually includes spindles, bearings, servo motors and other components. These components work together to realize the processing operations on the workpiece.

[0003] Chinese patent application CN111730364A discloses a box-in-box five-axis vertical cradle machining center, including a base, a cradle mechanism, a tool magazine frame, a Y-axis moving mechanism, and an X-axis moving mechanism. The X-axis moving mechanism is fixedly mounted on a Y-axis slide between a first column and a second column, and reciprocates along the Y-axis direction under the drive of a Y-axis motor; the Z-axis moving mechanism is arranged on the X-axis moving mechanism, and moves along the X-axis under the drive of the X-axis moving mechanism; the spindle box is arranged on the Z-axis moving mechanism and is perpendicular to the X-axis direction, and the spindle box reciprocates along the Z-axis under the drive of the Z-axis moving mechanism; the X-axis and Z-axis moving mechanisms are integrally mounted on a Y-axis slide similar to the box structure, which improves the safety of spindle processing and also improves the rigidity of the machine tool body.

[0004] During production of CNC machine tools, some processing waste chips fly and adhere to the slide rails. When the slide moves at high speed, it rubs against the slide rails, causing wear, which reduces the surface quality of the slide rails and the slide seat, and may also cause a decrease in dimensional accuracy, thereby affecting the positioning accuracy of the machine tool. In addition, the heat generated during the friction process may also cause thermal deformation of components such as the spindle box, further affecting the precision during processing. Summary of the invention

[0005] In view of the above problems, a high-precision CNC machine tool middle box structure is provided. The debris on the surface of the slide rail in the middle box structure is cleaned by a cleaning component, thereby solving the problems of some processing waste chips splashing and adhering to the slide rail during production of the CNC machine tool, causing the slide seat to rub against the slide rail when moving at high speed, resulting in wear, reducing the surface quality of the slide rail and slide seat, and affecting the positioning accuracy and repeatability accuracy of the machine tool.

[0006] In order to solve the problems of the prior art, the present invention provides a middle box structure of a high-precision CNC machine tool, including a box body installed in the CNC machine tool, the middle box structure also includes an X-axial slide rail fixed on the box body, an X-axial slide seat slidably installed on the X-axial slide rail, a Y-axial slide rail fixed on the box body, a Y-axial slide seat slidably installed on the Y-axial slide rail, a main frame fixed on the Y-axial slide seat, a Z-axial slide rail fixed on the main frame, a Z-axial slide seat slidably installed on the Z-axial slide rail, a mobile frame fixed on the Z-axial slide seat, and a chuck installed on the mobile frame; a cleaning component for cleaning processing debris from the slide rail surface to reduce sliding friction is fixedly installed on the X-axial slide seat, the Y-axial slide seat, and the Z-axial slide seat.

[0007] Preferably, the cleaning assembly includes a sliding disk fixed on the X-axial slide, the Y-axial slide, and the Z-axial slide, the sliding disk is slidably mounted on the X-axial slide, the Y-axial slide, and the Z-axial slide, a support seat is fixedly mounted on the sliding disk, a vacuum pump for controlling gas transmission is mounted on the support seat, and a filter box for cleaning processing debris mixed in the transmission gas is also mounted on the support seat; an air inlet pipe for negative pressure absorption of gas on the surface of the slide rail is installed through the filter box, an air supply pipe is connected between the filter box and the vacuum pump, and an exhaust pipe for discharging gas to the surface of the slide rail is installed on the vacuum pump.

[0008] Preferably, a guide frame is fixedly installed in the filter box, a filter seat is longitudinally slidably connected to the guide frame, and an upper filter screen and a lower filter screen are respectively embedded and installed in the filter seat at the upper and lower parts.

[0009] Preferably, a cooling assembly for cooling the transmission gas is provided in the filter box.

[0010] Preferably, the cooling assembly includes a plurality of cooling curved pipes fixedly installed in the filter seat at equal intervals, a liquid inlet pipe and a liquid outlet pipe being connected through the cooling curved pipes, the liquid inlet pipe and the liquid outlet pipe being slidably connected to the side wall of the filter box, and sealing strips that fit the outer wall of the filter box are fixedly installed on the liquid inlet pipe and the liquid outlet pipe.

[0011] Preferably, an air inlet head is rotatably connected to the air inlet pipe, an air outlet head is rotatably installed on the exhaust pipe, and a linkage frame is fixedly connected between the air inlet head and the air outlet head; and a swing component for controlling the reciprocating rotation of the air inlet head and the air outlet head is provided on the support seat.

[0012] Preferably, the swing assembly includes a turntable rotatably mounted on a support seat, and a push rod is eccentrically connected to the turntable; a longitudinal sliding frame is fixedly sleeved on the air outlet head, and the push rod is slidably assembled with the longitudinal sliding frame; a transverse sliding frame is longitudinally slidably connected to the support seat, and the push rod is slidably assembled with the transverse sliding frame, and an ejector rod is fixedly connected to the transverse sliding frame, the ejector rod is slidably connected to the support seat, and the ejector rod is fixedly connected to the filter seat.

[0013] Preferably, a first driving wheel and a second driving wheel are rotatably mounted in the sliding plate, and the first driving wheel and the second driving wheel are in contact with the side walls of the X-axis slide rail, the Y-axis slide rail, and the Z-axis slide rail.

[0014] Preferably, a driving bevel gear is coaxially fixedly connected to the first driving wheel, and the driving bevel gear is meshingly assembled with a first transmission bevel gear. The first transmission bevel gear is coaxially fixedly connected to the second transmission bevel gear. The first transmission bevel gear and the second transmission bevel gear are rotatably installed on a support seat, and the second transmission bevel gear is meshingly assembled with a driven bevel gear, and the driven bevel gear is coaxially fixedly connected to the turntable.

[0015] Preferably, a disc seat is coaxially fixedly connected to the second driving wheel, a plurality of pressure columns are fixed at equal angles on the upper end surface of the disc seat, a guide frame is fixedly installed in the support seat, a lifting bracket is slidably connected to the guide frame, a lifting spring is connected between the lifting bracket and the guide frame, a temperature sensor for detecting the surface temperature of the slide rail is fixedly installed on the lifting bracket, a power frame is slidably sleeved on the lifting bracket, and the power frame corresponds to the top of the pressure column.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention is provided with a cleaning component that can clean the processing debris adsorbed on the surface of the X-axis slide rail, the Y-axis slide rail and the Z-axis slide rail, thereby reducing the wear caused by the movement between the slide seat and the slide rail. The vacuum pump in the cleaning component generates negative pressure, and suction is generated on the surface of the slide rail. The processing debris adsorbed on the surface of the slide rail enters the filter box through the air inlet pipe. After being filtered by the filter box, the gas is sprayed on the surface of the slide rail again through the exhaust pipe. In this way, when the slide seat moves on the surface of the slide rail, the cleaning component can clean the debris adsorbed on the surface of the slide rail over a large range, thereby maintaining the precision of the movement control of the slide seat and the slide rail.

[0018] 2. The present invention is provided with a cooling component to cool the gas transmitted in the filter box. When the gas absorbed by the negative pressure enters the filter box, the gas contacts the cooling curved pipe and exchanges heat with the coolant flowing in the cooling curved pipe to quickly cool down the gas. The cooled gas is re-output to the surface of the slide rail through the exhaust pipe, thereby achieving the effect of cooling the surface of the slide rail and avoiding the situation in which the slide rail is thermally deformed due to the long-term control of the movement of the slide seat and the slide rail during CNC machining.

[0019] 3. The present invention is provided with a structure for controlling the reciprocating rotation of the air inlet head and the air outlet head to expand the range of air suction and exhaust on the slide rail surface. When the slide seat moves, the first driving wheel is mobilized to rotate. The first driving wheel drives the turntable to rotate through multiple gear transmission structures. The rotation drives the longitudinal slide frame and the transverse slide frame to reciprocate through the push rod. The longitudinal slide frame can drive the air outlet head and the air inlet head to reciprocate. The transverse slide frame drives the ejection rod to reciprocate up and down, and drives the filter seat to reciprocate up and down to clean the processing debris blocked on the lower filter screen.

[0020] 4. In the present invention, a second driving wheel is arranged to roll when the slide seat moves, and the second driving wheel controls the rotation of the disc seat. When the disc seat rotates, the pressure column on the surface intermittently pushes the power frame to move up and down, and the power frame intermittently pushes the lifting bracket to move longitudinally. The lifting bracket can intermittently move down close to the surface of the slide rail under the pulling force of the lifting spring. When the slide seat stops on the slide rail, the lifting bracket moves and contacts the surface of the slide rail under the thrust of the lifting spring, thereby detecting the temperature of the surface of the slide rail. The temperature sensor can follow the slide seat to move on the surface of the slide rail to achieve the effect of temperature detection at multiple positions on the surface of the slide rail, and in the process of the movement of the slide seat, the temperature sensor is subjected to intermittent upward thrust, and the temperature sensor is not always in contact with the surface of the slide rail, so as to maintain precise control of the movement between the slide seat and the slide rail. When the heat on the surface of the slide rail exceeds the bearing range of the material, the machine is shut down for cooling to avoid thermal deformation of the sliding structure in the box structure of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the box structure in a high-precision CNC machine tool.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the X-axis slide rail in the middle box structure of a high-precision CNC machine tool.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the main frame of a high-precision CNC machine tool center box structure.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the Y-axis slide in the middle box structure of a high-precision CNC machine tool.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the Z-axis slide rail of the middle box structure of a high-precision CNC machine tool.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of a sliding disk in a box structure of a high-precision CNC machine tool.

[0027] Figure 7 It is a three-dimensional structural diagram of a vacuum pump with a middle box structure for a high-precision CNC machine tool.

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the air intake pipe of the middle box structure of a high-precision CNC machine tool.

[0029] Fig. 9 It is a schematic diagram of the cross-sectional structure of a filter box in a high-precision CNC machine tool center box structure.

[0030] Fig.10 The present invention is a schematic diagram of the three-dimensional structure of the ejector rod in the middle box structure of a high-precision CNC machine tool.

[0031] Fig.11 It is a schematic diagram of the three-dimensional structure of the cooling curved pipe in the middle box structure of a high-precision CNC machine tool.

[0032] Fig.12 It is a schematic diagram of the three-dimensional structure of an air outlet head in a middle box structure of a high-precision CNC machine tool.

[0033] Fig.13 The present invention is a schematic diagram of the three-dimensional structure of the first driving wheel of the middle box structure of a high-precision CNC machine tool.

[0034] Fig.14 It is a schematic diagram of the three-dimensional structure of a longitudinal sliding frame in the middle box structure of a high-precision CNC machine tool.

[0035] Fig.15 It is a schematic diagram of the three-dimensional structure of a horizontal sliding frame in the middle box structure of a high-precision CNC machine tool.

[0036] Fig.16 The present invention is a schematic diagram of the three-dimensional structure of the second driving wheel of the middle box structure of a high-precision CNC machine tool.

[0037] The numbers in the figure are:

[0038] 11. Box; 12. X-axis slide rail; 13. X-axis slide seat; 14. Y-axis slide rail; 15. Y-axis slide seat; 16. Main frame; 17. Z-axis slide rail; 18. Z-axis slide seat; 19. Mobile frame; 110. Chuck; 2. Cleaning assembly; 21. Sliding plate; 22. Support seat; 23. Vacuum pump; 24. Filter box; 25. Inlet pipe; 26. Air pipe; 27. Exhaust pipe; 31. Guide frame; 32. Filter seat; 33. Upper filter screen; 34. Lower filter screen; 4. Cooling assembly; 41. Cooling curved pipe; 42. Liquid inlet pipe; 43. Liquid outlet pipe; 44 , sealing strip; 51, air inlet head; 52, air outlet head; 53, linkage frame; 54, swing assembly; 541, turntable; 542, push rod; 543, longitudinal slide frame; 544, transverse slide frame; 545, ejector rod; 61, first driving wheel; 611, active bevel gear; 612, first transmission bevel gear; 613, second transmission bevel gear; 614, driven bevel gear; 62, second driving wheel; 621, disc seat; 622, pressure column; 623, guide frame; 624, lifting bracket; 625, lifting spring; 626, temperature sensor; 627, power frame. DETAILED DESCRIPTION

[0039] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] See also Figure 1-Figure 7 As shown, a middle box structure of a high-precision CNC machine tool includes a box body 11 installed in the CNC machine tool, and the middle box structure also includes an X-axial slide rail 12 fixed on the box body 11, an X-axial slide seat 13 slidably installed on the X-axial slide rail 12, a Y-axial slide rail 14 fixed on the box body 11, a Y-axial slide seat 15 slidably installed on the Y-axial slide rail 14, a main frame 16 fixed on the Y-axial slide seat 15, a Z-axial slide rail 17 fixedly installed on the main frame 16, a Z-axial slide seat 18 slidably installed on the Z-axial slide rail 17, a mobile frame 19 fixedly installed on the Z-axial slide seat 18, and a chuck 110 installed on the mobile frame 19; the X-axial slide seat 13, the Y-axial slide seat 15, and the Z-axial slide seat 18 are all fixedly installed with a cleaning component 2 for cleaning processing debris from the slide rail surface to reduce sliding friction.

[0041] When the CNC machine tool is in production and processing, some of the processing waste chips splash and are adsorbed on the surfaces of the X-axial slide rail 12, the Y-axial slide rail 14 and the Z-axial slide rail 17. Due to the influence of the waste chips adsorbed on the slide rail surface, the slide seat and the slide rail rub against each other and produce wear, which affects the precision of the slide seat controlling the movement on the slide rail. In addition, the long-term friction between the slide seat and the slide rail generates heat, which makes the slide rail easily deformed due to the influence of heat. A cleaning component 2 is installed on the slide seat in the present application. When the X-axial slide seat 13, the Y-axial slide seat 15 and the Z-axial slide seat 18 are controlled to slide and move on the X-axial slide rail 12, the Y-axial slide rail 14 and the Z-axial slide rail 17 respectively, the cleaning component 2 moves on the slide rail surface accordingly, and can clean the processing debris adsorbed on the slide rail surface, thereby reducing the wear between the slide seat and the slide rail and maintaining high-precision control movement of the CNC machine tool.

[0042] See also Figure 3-Figure 12 As shown, the cleaning assembly 2 includes a sliding plate 21 fixed on the X-axis slide 13, the Y-axis slide 15, and the Z-axis slide 18. The sliding plate 21 is slidably mounted on the X-axis slide rail 12, the Y-axis slide rail 14, and the Z-axis slide rail 17. A support seat 22 is fixedly mounted on the sliding plate 21. A vacuum pump 23 for controlling gas transmission is mounted on the support seat 22. A filter box 24 for cleaning processing debris mixed in the transmission gas is also mounted on the support seat 22; a filter box 24 is penetrated by a filter box 24 that absorbs the sliding debris by negative pressure. An air supply pipe 26 is connected between the air inlet pipe 25 for the gas on the rail surface, the filter box 24 and the vacuum pump 23, and an exhaust pipe 27 for discharging gas to the surface of the slide rail is installed on the vacuum pump 23; the vacuum pump 23 is a micro pump body structure, and the negative pressure generated is limited, so as to maintain the absorption and cleaning effect of the debris adsorbed on the surface of the slide rail, and the side wall of the filter box 24 is provided with a detachable panel structure to clean the processing debris filtered inside, and the inner bottom surface of the filter box 24 is provided with a magnetic adsorption material, which can effectively adsorb the filtered processing debris.

[0043] When the slide seat slides on the surface of the slide rail, the sliding plate 21 moves synchronously with the slide seat on the surface of the slide rail, and the vacuum pump 23 is turned on to absorb the gas on the surface of the slide rail through the air inlet pipe 25. The processing debris adsorbed on the surface of the slide rail follows the gas through the air inlet pipe 25 into the filter box 24, and the processing debris mixed in the gas is filtered in the filter box 24. The filtered gas is discharged back to the surface of the slide rail through the exhaust pipe 27, thereby reducing the amount of processing debris adsorbed on the surface of the slide rail and avoiding serious wear between the slide seat and the slide rail.

[0044] See also Figure 6-Figure 11 As shown, a guide frame 31 is fixedly installed in the filter box 24, a filter seat 32 is longitudinally slidably connected to the guide frame 31, and an upper filter screen 33 and a lower filter screen 34 are respectively embedded and installed in the upper and lower parts of the filter seat 32.

[0045] The gas enters the filter box 24, and under the filtering action of the lower filter 34 and the upper filter 33, the processing debris mixed in the gas can be effectively filtered out, and the filter seat 32 connected to the guide frame 31 is controlled to move back and forth longitudinally to clean the debris blocked in the lower filter 34 and the upper filter 33.

[0046] See also Figure 9-11 As shown, a cooling assembly 4 for cooling the transport gas is disposed in the filter box 24 .

[0047] While the gas enters the filter box 24 for filtering, the temperature of the output gas is quickly reduced under the cooling effect of the cooling component 4, so that the gas output from the exhaust pipe 27 has a lower temperature acting on the surface of the slide rail, thereby cooling the slide rail and avoiding thermal deformation caused by friction of the slide rail.

[0048] See also Figure 9-11 As shown, the cooling assembly 4 includes a plurality of cooling curved pipes 41 fixedly installed in the filter seat 32 at equal intervals, and a liquid inlet pipe 42 and a liquid outlet pipe 43 are connected through the cooling curved pipe 41. The liquid inlet pipe 42 and the liquid outlet pipe 43 are slidably connected with the side wall of the filter box 24, and a sealing strip 44 that fits the outer wall of the filter box 24 is fixedly installed on the liquid inlet pipe 42 and the liquid outlet pipe 43; a slide groove structure for the liquid inlet pipe 42 and the liquid outlet pipe 43 to move up and down is provided on the side wall of the filter box 24, and when the filter seat 32 moves up and down, the liquid inlet pipe 42 and the liquid outlet pipe 43 are driven to move longitudinally synchronously, and the sealing strip 44 seals and blocks the outside of the slide groove on the side wall of the filter box 24 to maintain the sealing of the filter box 24.

[0049] The liquid inlet pipe 42 and the liquid outlet pipe 43 are interconnected with the equipment for storing and transporting the coolant through a hose. The coolant circulation in and out of the cooling curved pipe 41 is controlled by the liquid inlet pipe 42 and the liquid outlet pipe 43. After the gas enters the filter box 24, it contacts the cooling curved pipe 41 and is quickly cooled down, so that the output gas is in a low temperature state, so as to cool the surface of the slide rail.

[0050] See also Figure 8 , Figure 12-Figure 15 As shown, an air inlet head 51 is rotatably connected to the air inlet pipe 25, an air outlet head 52 is rotatably installed on the exhaust pipe 27, and a linkage frame 53 is fixedly connected between the air inlet head 51 and the air outlet head 52; a swing component 54 for controlling the reciprocating rotation of the air inlet head 51 and the air outlet head 52 is provided on the support seat 22.

[0051] The air inlet head 51 and the air outlet head 52 are controlled to reciprocate by the swing assembly 54, thereby expanding the range of air inlet and air outlet, and effectively cleaning the processing debris adsorbed on the surface of the slide rail.

[0052] See also Figure 12-Figure 15As shown, the swing assembly 54 includes a turntable 541 rotatably mounted on the support seat 22, and a push rod 542 is eccentrically connected to the turntable 541; a longitudinal sliding frame 543 is fixedly sleeved on the air outlet head 52, and the push rod 542 and the longitudinal sliding frame 543 are slidably assembled; a transverse sliding frame 544 is longitudinally slidably connected to the support seat 22, and the push rod 542 and the transverse sliding frame 544 are slidably assembled, and an ejector rod 545 is fixedly connected to the transverse sliding frame 544, and the ejector rod 545 is slidably connected to the support seat 22, and the ejector rod 545 is fixedly connected to the filter seat 32.

[0053] The control turntable 541 rotates, and the push rod 542 fixed on the turntable 541 rotates in a circle. The push rod 542 slides through the longitudinal slide frame 543 to control the reciprocating rotation of the longitudinal slide frame 543. The longitudinal slide frame 543 is sleeved on the outside of the air outlet head 52 and can drive it to reciprocate synchronously. The air outlet head 52 drives the air inlet head 51 to reciprocate through the linkage frame 53, thereby expanding the range of air intake and air outlet.

[0054] The push rod 542 passes through the transverse sliding frame 544 and can slide in the transverse sliding frame 544 to push the transverse sliding frame 544 to move back and forth longitudinally. The transverse sliding frame 544 drives the ejection rod 545 and the filter seat 32 to move back and forth longitudinally synchronously, so as to clean the processing debris blocked in the mesh of the upper filter screen 33 and the lower filter screen 34 in the filter seat 32.

[0055] See also Figure 12-16 As shown, the sliding plate 21 is rotatably mounted with a first driving wheel 61 and a second driving wheel 62 , and the side walls of the X-axis slide rail 12 , the Y-axis slide rail 14 , and the Z-axis slide rail 17 are all fitted with the first driving wheel 61 and the second driving wheel 62 .

[0056] When the sliding plate 21 is engaged on the slide rail and slides, the first driving wheel 61 and the second driving wheel 62 are attached to the side of the slide rail and roll.

[0057] See also Figure 12-Figure 15 As shown, a driving bevel gear 611 is coaxially fixedly connected to the first driving wheel 61, and the driving bevel gear 611 is meshed with a first transmission bevel gear 612. The first transmission bevel gear 612 is coaxially fixedly connected to the second transmission bevel gear 613. The first transmission bevel gear 612 and the second transmission bevel gear 613 are rotatably installed on the support seat 22. The second transmission bevel gear 613 is meshed with a driven bevel gear 614, and the driven bevel gear 614 is coaxially fixedly connected to the turntable 541.

[0058] The first driving wheel 61 rolls to drive the active bevel gear 611 to rotate, and the active bevel gear 611 drives the first transmission bevel gear 612 to rotate through meshing transmission, and the first transmission bevel gear 612 drives the second transmission bevel gear 613 to rotate synchronously, and the second transmission bevel gear 613 drives the driven bevel gear 614 to rotate through meshing transmission, and the driven bevel gear 614 provides power for the turntable 541 to drive it to rotate.

[0059] See also Figure 12-16 As shown, a disc seat 621 is coaxially fixedly connected to the second driving wheel 62, and a plurality of pressure columns 622 are fixed at equal angles on the upper end surface of the disc seat 621. A guide frame 623 is fixedly installed in the support seat 22, and a lifting bracket 624 is slidably connected to the guide frame 623. A lifting spring 625 is connected between the lifting bracket 624 and the guide frame 623. A temperature sensor 626 for detecting the surface temperature of the slide rail is fixedly installed on the lifting bracket 624. A power frame 627 is slidably sleeved on the lifting bracket 624, and the power frame 627 is correspondingly arranged above the pressure column 622; the upper end of the pressure column 622 is a hemispherical structure, and the up and down lifting height of the lifting bracket 624 does not exceed the radius of the spherical structure at the upper end of the pressure column 622.

[0060] The rotation of the second driving wheel 62 drives the disc seat 621 to rotate synchronously. When the disc seat 621 rotates, the pressure column 622 on its surface rotates in a circle. The pressure column 622 is correspondingly arranged at the lower position of the power frame 627. When the pressure column 622 rotates and separates from the power frame 627, the power frame 627 moves downward under the action of gravity and the downward pulling force of the lifting bracket 624 and the lifting spring 625. At this time, the lifting bracket 624 moves downward to make the temperature sensor 626 close to the surface of the slide rail. When the pressure column 622 rotates in a circle to squeeze the power frame 627, the power frame 627 pushes the lifting bracket 624 to move up, so that the temperature sensor 626 is away from the surface of the slide rail. When the sliding disc 2 When the slide rail surface moves, the temperature sensor 626 moves up and down under the driving action, and is subject to the elastic action of the lifting spring 625. The temperature sensor 626 basically does not contact the slide rail surface. When the sliding plate 21 stops moving on the slide rail, the temperature sensor 626 gradually stabilizes. When the pressure column 622 rotates and separates from the power frame 627, the temperature sensor 626 moves down and fits on the slide rail surface. The slide rail surface temperature can be detected in real time. When the slide rail surface temperature is too high, the machine needs to be shut down for cooling to avoid the thermal deformation of the sliding structure affecting the precision of the processing adjustment. The temperature sensor 626 moves on the slide rail surface following the sliding plate 21, and the detection range is wide.

[0061] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A high-precision CNC machine tool box structure, comprising a box body (11) installed in the CNC machine tool, characterized in that: The middle box structure also includes an X-axis slide rail (12) fixed on the box body (11), an X-axis slide seat (13) slidably mounted on the X-axis slide rail (12), a Y-axis slide rail (14) fixed on the box body (11), a Y-axis slide seat (15) slidably mounted on the Y-axis slide rail (14), a main frame (16) fixed on the Y-axis slide seat (15), a Z-axis slide rail (17) fixed on the main frame (16), a Z-axis slide seat (18) slidably mounted on the Z-axis slide rail (17), a mobile frame (19) fixedly mounted on the Z-axis slide seat (18), and a chuck (110) mounted on the mobile frame (19); a cleaning component (2) for cleaning machining debris from the surface of the slide rails is fixedly mounted on the X-axis slide seat (13), the Y-axis slide seat (15), and the Z-axis slide seat (18); The cleaning assembly (2) comprises a sliding disk (21) fixed on an X-axis slide seat (13), a Y-axis slide seat (15), and a Z-axis slide seat (18); the sliding disk (21) is slidably mounted on the X-axis slide rail (12), the Y-axis slide rail (14), and the Z-axis slide rail (17); a support seat (22) is fixedly mounted on the sliding disk (21); a vacuum pump (23) for controlling gas transmission is mounted on the support seat (22); and a filter box (24) for cleaning processing debris mixed in the transmission gas is also mounted on the support seat (22); The filter box (24) is provided with a cooling component (4) for cooling the transmission gas; An air inlet pipe (25) for absorbing gas on the surface of the slide rail by negative pressure is installed through the filter box (24), a gas delivery pipe (26) is connected between the filter box (24) and the vacuum pump (23), and an exhaust pipe (27) for discharging gas to the surface of the slide rail is installed on the vacuum pump (23); An air inlet head (51) is rotatably connected to the air inlet pipe (25), an air outlet head (52) is rotatably mounted on the air outlet pipe (27), and a linkage frame (53) is fixedly connected between the air inlet head (51) and the air outlet head (52); The support seat (22) is provided with a swing assembly (54) for controlling the reciprocating rotation of the air inlet head (51) and the air outlet head (52); the swing assembly (54) comprises a turntable (541) rotatably mounted on the support seat (22), and a push rod (542) is eccentrically connected to the turntable (541); a longitudinal sliding frame (543) is fixedly sleeved on the air outlet head (52), and the push rod (542) and the longitudinal sliding frame (543) are slidably assembled; a transverse sliding frame (544) is longitudinally slidably connected to the support seat (22), and the push rod (542) and the transverse sliding frame (544) are slidably assembled, and an ejector rod (545) is fixedly connected to the transverse sliding frame (544), and the ejector rod (545) is slidably connected to the support seat (22), and the ejector rod (545) is fixedly connected to the filter seat (32); A first driving wheel (61) and a second driving wheel (62) are rotatably mounted in the sliding plate (21); side walls of the X-axis sliding rail (12), the Y-axis sliding rail (14) and the Z-axis sliding rail (17) are mutually attached to the first driving wheel (61) and the second driving wheel (62); The first driving wheel (61) is coaxially fixedly connected to a driving bevel gear (611), the driving bevel gear (611) is meshed with a first transmission bevel gear (612), the first transmission bevel gear (612) is coaxially fixedly connected to a second transmission bevel gear (613), the first transmission bevel gear (612) and the second transmission bevel gear (613) are rotatably mounted on a support seat (22), the second transmission bevel gear (613) is meshed with a driven bevel gear (614), and the driven bevel gear (614) is coaxially fixedly connected to the rotating disk (541); A disc seat (621) is coaxially fixedly connected to the second driving wheel (62), a plurality of pressure columns (622) are fixedly provided on the upper end surface of the disc seat (621) at equal angles, a guide frame (623) is fixedly installed in the support seat (22), a lifting bracket (624) is slidably connected to the guide frame (623), a lifting spring (625) is connected between the lifting bracket (624) and the guide frame (623), a temperature sensor (626) for detecting the surface temperature of the slide rail is fixedly installed on the lifting bracket (624), a power frame (627) is slidably sleeved on the lifting bracket (624), the power frame (627) corresponds to the upper part of the pressure column (622), the upper end of the pressure column (622) is a hemispherical structure, and the lifting height of the lifting bracket (624) does not exceed the radius of the spherical structure at the upper end of the pressure column (622).

2. The high-precision CNC machine tool middle box structure according to claim 1 is characterized in that: A guide frame (31) is fixedly installed in the filter box (24), a filter seat (32) is longitudinally slidably connected to the guide frame (31), and an upper filter screen (33) and a lower filter screen (34) are respectively embedded and installed in the filter seat (32) at the upper and lower parts.

3. The high-precision CNC machine tool middle box structure according to claim 1 is characterized in that: The cooling assembly (4) comprises a plurality of cooling curved pipes (41) fixedly installed at equal intervals in the filter seat (32), a liquid inlet pipe (42) and a liquid outlet pipe (43) being connected through the cooling curved pipe (41), the liquid inlet pipe (42) and the liquid outlet pipe (43) being connected to the side wall of the filter box (24) in a sliding manner, and sealing strips (44) that are in contact with the outer wall of the filter box (24) are fixedly installed on the liquid inlet pipe (42) and the liquid outlet pipe (43).

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