Numerical control longmen guide rail grinder intelligent regulation and control guide rail temperature rising device and method

Abstract

This invention relates to an intelligent control device and method for temperature rise of guideways in CNC gantry grinding machines. The device comprises several thermally symmetrical and parallel V-shaped and planar guideways A on the machine bed. Each V-shaped and planar guideway A section is equipped with an independent PLC intelligent temperature control system and structural device. This invention solves the technical problems of guideway deformation and distortion caused by sliding friction and heat expansion, as well as the related technological challenges. It enables real-time and accurate detection and intelligent control of the temperature rise of each guideway within the grinding stroke, avoiding the problem of thermal deformation and distortion caused by differences in frictional force due to the different structural forms of the V-shaped and planar guideways. This improves the linear and planar accuracy and stability of the worktable movement, and also solves the prominent technical problems of straightness, flatness deviations, and grinding marks caused by long-term continuous high-efficiency grinding. This effectively improves the accuracy and efficiency of CNC gantry grinding machines in long-term continuous high-speed grinding of large key parts guideways.

Description

Technical Field

[0001] This invention relates to the field of CNC gantry guideway grinding machine manufacturing technology, specifically to a device and method for intelligently controlling the temperature rise of CNC gantry guideway grinding machines. Background Technology

[0002] Machine tools, as the "mother machines" of industry, are crucial to a nation's industrial strength, and CNC gantry rail grinding machines, known as the "mother machines among mother machines," are core foundational equipment for the high-quality development of advanced high-end equipment manufacturing. With the advanced manufacturing industry moving towards high-precision, high-speed, intelligent, and digital high-quality development, especially with the stringent standards for high-speed grinding and precision machining of key components such as guideways (tracks) in key industries like high-end industrial mother machine equipment, aerospace, military, and high-speed rail, existing CNC gantry rail grinding machines are struggling to meet the demands for efficient and precise machining.

[0003] like Figure 14-16 As shown, an existing CNC gantry grinding machine has an integrated V-shaped guide rail on one side of its upper bed and an integrated flat guide rail A on the other side. The V-shaped guide rail cooperates with the convex guide rail at the lower end of the worktable to form a sliding main guide rail pair, and the lower flat guide rail cooperates with the flat guide rail B at the lower end of the worktable to form a sliding guide rail pair. When the CNC gantry grinding machine continuously performs high-speed reciprocating motion for a long time to efficiently grind the guide rails (tracks) of large key parts, the V-shaped guide rail and the lower flat guide rail on the bed not only undergo sliding friction, heat generation, expansion, and deformation, resulting in torsion, but also the different structural shapes and friction forces of the V-shaped guide rail and the lower flat guide rail lead to the interaction and superposition of sliding friction, heat expansion, and deformation, severely affecting the stability of the reciprocating linear motion accuracy of the worktable. Ultimately, this results in the straightness of the guide rails when grinding large key parts with a universal grinding head, the flatness of the guide rails when grinding with a horizontal grinding head exceeding the tolerance, and grinding marks being generated during the grinding process. The aforementioned technical problems prevent existing CNC gantry rail grinding machines from meeting the urgent need for precision grinding and efficient machining of large key components in the aforementioned key industries, severely restricting further improvement in the grinding quality of large key components (rails) in these industries. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problems existing in the prior art and to provide an intelligent control device and method for the temperature rise of the guide rail in a CNC gantry guide rail grinding machine. It has the advantages of reasonable structural design, intelligent control of guide rail temperature rise, ensuring the stability of the flatness accuracy of the worktable, and improving the grinding quality of key parts such as guide rails (tracks).

[0005] To achieve the above objectives, the present invention employs the following technical solution: In a first aspect, the present invention provides an intelligent control device for temperature rise of guideways in a CNC gantry grinding machine, comprising a bed, a worktable, and an intelligent temperature rise control unit. The upper end of the bed is provided with a positioning guide groove and a mounting groove along its length. On one side of the bed corresponding to the positioning guide groove, multiple V-shaped guideways are provided along its length. Each V-shaped guideway has a V-shaped surface at its upper end and a positioning key at its lower end. The V-shaped guideways are precisely installed on the bed by cooperating with the positioning guide groove via the positioning key. The inner side of the mounting groove is a positioning surface, and the outer side is a locking support surface. Multiple planar guideways A are sequentially provided on the mounting groove along its length. The inner side of each planar guideway A rests against the positioning surface, and the outer side... A locking mechanism is provided between the locking support surfaces to lock the flat guide rail A onto the bed; a worktable is slidably provided on the upper end of the V-shaped guide rail and the flat guide rail A; the temperature rise intelligent control unit includes a cooling channel A and a temperature sensor A designed on each section of the V-shaped guide rail, and a cooling channel B and a temperature sensor B designed on each section of the flat guide rail A. The cooling channel A is connected to the solenoid valve A through the air inlet pipe A, and the cooling channel B is connected to the solenoid valve B through the air inlet pipe B. The temperature sensor A and the temperature sensor B are respectively connected to the PLC controller, and the solenoid valve A and the solenoid valve B are respectively connected to the air cooler. The PLC controller is respectively connected to the air cooler, the solenoid valve A, and the solenoid valve B.

[0006] As a further technical solution, the positioning guide groove is recessed on the bed, and the positioning key is protruded at the lower end of the V-shaped guide rail. The positioning guide groove and the positioning key are designed in a rectangular shape, and the depth of the positioning guide groove is not equal to the height of the positioning key.

[0007] As a further technical solution, the V-shaped guide rail is provided with a plurality of countersunk holes A evenly spaced along its length, and the corresponding guide positioning groove is provided with a plurality of internal threaded holes A evenly spaced along its length. The countersunk holes A are provided with hexagonal socket screws A, and the hexagonal socket screws A are installed on the internal threaded holes A to lock the V-shaped guide rail to the bed.

[0008] As a further technical solution, the cooling channel A includes two sets of cooling through holes symmetrically arranged on the V-shaped guide rail. Each set of cooling through holes includes multiple cooling through holes A evenly spaced apart. Two connecting grooves A are symmetrically arranged at both ends of the V-shaped guide rail. The connecting grooves A connect all the cooling through holes A in the same set. End caps A that seal the connecting grooves A are provided at both ends of the V-shaped guide rail. The two connecting grooves A at one end of the V-shaped guide rail are respectively connected to an air inlet A, and the two connecting grooves A at the other end are respectively connected to an exhaust port A. The air inlet A and the exhaust port A are arranged along the width direction of the V-shaped guide rail, and each air inlet A is connected to an air inlet pipe A.

[0009] As a further technical solution, the V-shaped guide rail is provided with a mounting hole A, the temperature sensor A is installed in the mounting hole A, and the collection point of the temperature sensor A is set at a position close to the V-shaped surface and far away from the cooling through hole A.

[0010] As a further technical solution, the locking mechanism includes a plurality of locking blocks spaced apart along the length of the bed. The inner side of the locking block is designed as an inclined surface A, and the outer side is designed as a vertical surface that mates with the locking support surface. The outer side of the flat guide rail A is designed as an inclined surface B that mates with the inclined surface A. The locking block is provided with a countersunk hole B, and the countersunk hole B is provided with an internal hexagon screw B. The mounting groove between the corresponding flat guide rail A and the locking support surface is provided with a plurality of internal threaded holes B evenly spaced along its length. The internal hexagon screw B is installed on the internal threaded hole B to install the locking block on the bed and lock the flat guide rail A on the bed at the same time.

[0011] As a further technical solution, the cooling channel B includes a plurality of cooling through holes B evenly distributed along the width direction of the planar guide rail A. The planar guide rail A has connecting grooves B at both ends that connect all the cooling through holes B. The planar guide rail A also has end caps B at both ends that seal the connecting grooves B. One connecting groove B is connected to the air inlet B, and the other connecting groove B is connected to the exhaust port B. The air inlet B and the exhaust port B are respectively arranged along the width direction of the planar guide rail A. The air inlet B is connected to the air inlet pipe B.

[0012] As a further technical solution, the planar guide rail A is provided with a mounting hole B, the temperature sensor B is disposed in the mounting hole B, and the collection point of the temperature sensor B is disposed near the surface of the planar guide rail A and away from the cooling through hole B.

[0013] As a further technical solution, a convex guide rail is provided on one side of the lower end of the workbench, and a flat guide rail B is provided on the other side. The convex guide rail is slidably mounted on the V-shaped guide rail, and the flat guide rail B is slidably mounted on the flat guide rail A. Polytetrafluoroethylene guide rail strips are respectively provided on the lower end surfaces of the convex guide rail and the flat guide rail B.

[0014] Secondly, this invention provides a method for intelligently controlling the temperature rise of guideways in a CNC gantry grinding machine, comprising: designing all V-shaped guideways and planar guideways A as separate parts from the machine bed; and adopting a segmented structure for the V-shaped guideways and planar guideways A; designing positioning guide grooves and mounting grooves on the machine bed respectively; precisely mounting the V-shaped guideways on the machine bed by engaging with the positioning guide grooves via positioning keys at their lower ends; and setting the planar guideways A on the mounting grooves and locking them to the machine bed by multiple locking blocks; and independently controlling the temperature rise of each segment of the V-shaped guideway and planar guideway A.

[0015] As a further technical solution, a temperature sensor A is designed on each V-shaped guide rail, and a temperature sensor B is designed on each planar guide rail A. The temperature sensors A and B transmit the detected temperature to the PLC controller in real time. A cooling channel A is designed on each V-shaped guide rail, and each cooling channel A is connected to a solenoid valve A. A cooling channel B is designed on each planar guide rail, and each cooling channel B is connected to a solenoid valve B. The solenoid valves A and B are respectively connected to an air cooler, and the solenoid valves A, B, and air cooler are respectively connected to the PLC controller.

[0016] The present invention, by adopting the above technical solution, can bring the following beneficial effects: By adopting a separate design for the V-shaped guide rail and the flat guide rail A from the bed, and by setting several parallel segments of the V-shaped guide rail and the flat guide rail A in a thermally symmetrical manner, the technical problems of deformation and twisting caused by the sliding friction and heat expansion of the V-shaped guide rail and the flat guide rail A on the upper part of the bed of the CNC gantry guide rail grinding machine (the V-shaped guide rail and the flat guide rail extend along the length of the bed) as well as the processability of machining and assembly are solved. Each guide rail segment is equipped with a PLC independent intelligent control system and structural device for the guide rail temperature rise, which also solves the problem of real-time accurate detection and intelligent control of different temperature rise changes of each guide rail within the grinding stroke. This avoids the technical problem of thermal deformation and superposition of twisting caused by the difference in friction force due to the different structural forms of the V-shaped guide rail and the flat guide rail A on the upper part of the bed of the CNC gantry guide rail grinding machine. This technology further solves the problems of excessive deviations in the linear motion of the worktable along the bed guideway of CNC gantry guideway grinding machines and the instability of the worktable surface accuracy. It also addresses the technical challenges of excessive deviations in the straightness of guideways when using universal grinding heads for grinding large critical parts and excessive deviations in the flatness of guideways when using horizontal grinding heads during long-term, continuous, and high-efficiency grinding operations. This effectively improves the accuracy and efficiency of CNC gantry guideway grinding machines in long-term, continuous, and high-speed grinding of large critical parts guideways. It meets the stringent high-quality requirements of high-efficiency, precision grinding of guideways (tracks) for large critical parts in key industries such as high-end industrial machine tools, aerospace, military, and high-speed rail, achieving a significant improvement in the quality of guideway (track) parts produced by CNC gantry guideway grinding machines. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the intelligent control device for temperature rise of CNC gantry grinding machine according to the present invention; Figure 2 This is a partial structural diagram of the intelligent control device for temperature rise of CNC gantry grinding machine according to the present invention; Figure 3 for Figure 1 Sectional view along line AA in the middle; Figure 4 for Figure 3 Enlarged view of part B in the image; Figure 5This is a schematic diagram of the V-shaped guide rail of the present invention; Figure 6 for Figure 5 A schematic diagram of the structure of the K-direction view in the diagram; Figure 7 This is a schematic diagram of the structure of end cap A of the present invention; Figure 8 for Figure 1 Enlarged view of section A in the image; Figure 9 This is a schematic diagram of the installation of the planar guide rail A of the present invention; Figure 10 This is a schematic diagram of the planar guide rail A of the present invention; Figure 11 for Figure 10 BB-direction sectional view in the middle; Figure 12 This is a schematic diagram of the structure of end cap B of the present invention; Figure 13 This is a schematic diagram of the locking block of the present invention; Figure 14 This is a schematic diagram of the structure of an existing CNC gantry grinding machine; Figure 15 for Figure 14 Enlarged view of a section in the middle I area; Figure 16 for Figure 14 Enlarged view of a section in central part II; In the diagram: 1. Bed; 2. Worktable; 3. Positioning guide groove; 4. Mounting groove; 5. V-shaped guide rail; 6. V-shaped surface; 7. Positioning key; 8. Positioning surface; 9. Locking support surface; 10. Flat guide rail A; 11. Locking mechanism; 1101. Locking pressure block; 1102. Inclined surface A; 1103. Vertical surface; 1104. Inclined surface B; 1105. Countersunk hole B; 1106. Socket head screw B; 1107. Internal threaded hole B; 12. Cooling channel A; 1201. Cooling channel A; 1202. Connecting groove A; 1203. End cap A; 1204. Air inlet A; 1205. Exhaust port A; 13. Temperature sensor A; 14. Cooling channel B; 1401. Cooling through hole B; 1402. Connecting groove B; 1403. End cap B; 1404. Air inlet B 1405. Exhaust port B; 15. Temperature sensor B; 16. Intake pipe A; 17. Solenoid valve A; 18. Intake pipe B; 19. Solenoid valve B; 20. PLC controller; 21. Air cooler; 22. Countersunk hole A; 23. Internal threaded hole A; 24. Socket head screw A; 25. Mounting hole A; 26. Mounting hole B; 27. Convex guide rail; 28. Flat guide rail B; 29. ​​Existing CNC gantry guide rail grinding machine; 30. Integrated flat guide rail A; 31. Integrated V-shaped guide rail; 32. Left column; 33. Right column; 34. Crossbeam; 35. First transverse slide plate; 36. Second transverse slide plate; 37. First vertical slide; 38. Second vertical slide; 39. Horizontal grinding head; 40. Horizontal grinding head grinding wheel; 41. Universal grinding head; 42. Universal grinding wheel; 43. PTFE guide rail belt. Detailed Implementation

[0018] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0019] For ease of description, the words "up," "down," "left," "right," "front," and "back" appearing in this invention only indicate that they are consistent with the up, down, left, right, front, and back directions of the accompanying drawings themselves. They do not limit the structure and are merely for the purpose of facilitating the description of this invention and simplifying the description. They do not indicate or imply that the device or component 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 this invention.

[0020] To better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

[0021] like Figure 1-13As shown, this invention provides an intelligent control device for the temperature rise of the guideway in a CNC gantry grinding machine. It includes a bed 1, a worktable 2, and an intelligent temperature rise control unit. It also includes a left column 32 on the left side of the bed 1 and a right column 33 on the right side. A crossbeam 34 is provided between the left column 32 and the right column 33. A first transverse slide plate 35 and a second transverse slide plate 36 are slidably mounted on the crossbeam 34. A first vertical slide block 37 is vertically slidable on the first transverse slide plate 35, and a second vertical slide block 38 is vertically slidable on the second transverse slide plate 36. The slide 37 is equipped with a horizontal grinding head 39 and a horizontal grinding wheel 40, and the second vertical slide 38 is equipped with a universal grinding head 41 and a universal grinding wheel 42; the upper end of the bed 1 is provided with a positioning guide groove 3 and a mounting groove 4 along its length; on the side of the bed 1 corresponding to the positioning guide groove 3, multiple V-shaped guide rails 5 are provided along its length, the upper end of the V-shaped guide rail 5 is provided with a V-shaped surface 6, and the lower end is provided with a positioning key 7. The V-shaped guide rail 5 is precisely installed on the bed 1 by cooperating with the positioning guide groove 3 through the positioning key 7; the inner side of the mounting groove 4 The mounting groove 4 has a positioning surface 8 and an outer surface 9. Multiple planar guide rails A10 are sequentially arranged along its length. The inner surface of each planar guide rail A10 rests against the positioning surface 8, and a locking mechanism 11 is provided between the outer surface and the locking support surface 9 to lock the planar guide rail A10 onto the bed 1. A worktable 2 is slidably mounted on the upper ends of the V-shaped guide rail 5 and the planar guide rail A10. The temperature rise intelligent control unit includes a cooling channel A12 and a temperature sensor A13 designed on each V-shaped guide rail 5. The cooling channel A14 and temperature sensor B15 are designed on the flat guide rail A10. The cooling channel A12 is connected to the solenoid valve A17 through the air inlet pipe A16, and the cooling channel B14 is connected to the solenoid valve B19 through the air inlet pipe B18. The temperature sensor A13 and temperature sensor B15 are respectively connected to the PLC controller 20. The solenoid valve A17 and solenoid valve A19 are respectively connected to the air cooler 21. The PLC controller 20 is connected to the air cooler 21, solenoid valve A17 and solenoid valve B19 respectively.Compared with the existing CNC gantry guideway grinding machine 29, the innovative design reconstructs the overall structure of the integrated V-shaped guideway 31 and integrated flat guideway 30 on the upper part of the CNC gantry guideway grinding machine bed. Specifically, the bed 1, V-shaped guideway 5, and flat guideway A10 are set as separate structures, and the V-shaped guideway 5 and flat guideway A10 are each thermally symmetrically arranged with several parallel segments. This solves the problem of sliding friction heat generation and expansion of the integrated V-shaped guideway 31 and integrated flat guideway 30 on the upper part of the CNC gantry guideway grinding machine bed (the integrated V-shaped guideway 31 and integrated flat guideway A10 are thermally symmetrically arranged with several parallel segments). The extension of rail 31 and integrated flat guide rail 30 along the length of bed 1 causes deformation and twisting, as well as technical problems related to machining and assembly. Simultaneously, each guide rail section is equipped with a PLC-based independent intelligent temperature control system and structural device, solving the problem of inaccurate real-time detection and intelligent control of temperature rise in each guide rail during the grinding stroke. This avoids the technical challenge of thermal deformation and superimposed twisting caused by the different structural forms of the integrated V-shaped guide rail 31 and integrated flat guide rail 30 on the upper part of the CNC gantry grinding machine, which result in differences in frictional force. Furthermore, it solves the problems of excessive deviation in the linear movement of the worktable along the guide rail of bed 1 and the flatness stability of the worktable 2 surface in CNC gantry grinding machines. It also solves the technical challenges of excessive deviation in the straightness of guide rails for large key parts ground by universal grinding heads and the flatness of guide rails for key parts ground by horizontal grinding heads during long-term continuous high-efficiency grinding operations in CNC gantry grinding machines, effectively improving the accuracy and efficiency of guide rails for large key parts ground by CNC gantry grinding machines during long-term continuous high-speed grinding. It meets the stringent requirements of high-efficiency grinding and precision machining of guide rails (tracks) for large key components in key industries such as high-end industrial machine tools, aerospace, military, and high-speed rail, and realizes the improvement of high quality of guide rail (track) parts products ground by CNC gantry guide rail grinding machines.

[0022] The positioning guide groove 3 is recessed on the bed 1, and the positioning key 7 is protruding at the lower end of the V-shaped guide rail 5. Both the positioning guide groove 3 and the positioning key 7 are rectangular. The depth of the positioning guide groove 3 is not equal to the height of the positioning key 7. That is, after the V-shaped guide rail 5 is installed on the bed 1, a gap remains between the lower end of the positioning key 7 and the positioning guide groove 3, serving only a guiding and positioning function, while the load is still borne by the bed 1. This achieves precise guiding and positioning of the V-shaped guide rail 5, ensuring that the machining and assembly process requirements are met.

[0023] The V-shaped guide rail 5 has multiple countersunk holes A22 evenly spaced along its length. Correspondingly, the guide positioning groove 3 has multiple internally threaded holes A23 evenly spaced along its length. Hex socket head cap screws A24 are installed on the countersunk holes A22 and mounted on the internally threaded holes A23 to lock the V-shaped guide rail 5 onto the bed 1. The specific locking and installation structure of the V-shaped guide rail 5 is given, fully utilizing the design structure of the guide positioning groove 3 and the positioning key 7 to quickly, accurately, and reliably lock the V-shaped guide rail 5 onto the bed 1.

[0024] The cooling channel A12 includes two sets of cooling through holes symmetrically arranged on the V-shaped guide rail 5. Each set of cooling through holes includes multiple cooling through holes A1201 evenly spaced apart. The V-shaped guide rail 5 has two symmetrically arranged connecting grooves A1202 at both ends, which connect all the cooling through holes A1201 in the same set. The V-shaped guide rail 5 has end caps A1203 at both ends that seal the connecting grooves A1202. The two connecting grooves A1202 at one end of the V-shaped guide rail 5 are respectively connected to an air inlet A1204, and the two connecting grooves A1202 at the other end are respectively connected to an exhaust port A1205. The air inlet A1204 and the exhaust port A1205 are arranged along the width direction of the V-shaped guide rail 5, and each air inlet A1204 is connected to an air inlet pipe A16. The specific structure of cooling channel A12 is given. Based on the symmetrical characteristics of V-shaped guide rail 5, two sets of cooling through holes are symmetrically arranged on it, which can quickly cool down the entire V-shaped surface 6, improving the temperature control effect and efficiency.

[0025] The V-shaped guide rail 5 is provided with a mounting hole A25, and the temperature sensor A13 is installed inside the mounting hole A25. The sampling point of the temperature sensor A13 is located near the V-shaped surface 6 and away from the cooling through hole A1201. This allows for timely and accurate detection of the surface temperature of the V-shaped guide rail 5, ensuring intelligent temperature rise control.

[0026] The locking mechanism 11 includes a plurality of locking blocks 1101 spaced apart along the length of the bed 1. The inner side of the locking block 1101 is designed as an inclined surface A1102, and the outer side is designed as a vertical surface 1103 that mates with the locking support surface 9. The outer side of the planar guide rail A10 is designed as an inclined surface B1104 that mates with the inclined surface A1102. The locking block 1101 is provided with a countersunk hole B1105. The countersunk hole B1105 is provided with an internal hexagon screw B1106. The mounting groove 4 between the corresponding planar guide rail A10 and the locking support surface 9 is provided with a plurality of internal threaded holes B1107 evenly spaced along its length. The internal hexagon screws B1106 are installed in the internal threaded holes B1107 to install the locking block 1101 on the bed 1 and lock the planar guide rail A10 on the bed 1 at the same time. The specific structural form of the locking mechanism 8 is given, which ensures the installation accuracy of the planar guide rail A10 while facilitating quick and reliable locking of the planar guide rail A10, thus meeting the processing and assembly process requirements.

[0027] The cooling channel B14 includes a plurality of cooling through holes B1401 evenly distributed along the width direction of the planar guide rail A10. Each end of the planar guide rail A10 has a connecting groove B1402 that connects all the cooling through holes B1401. Each end of the planar guide rail A10 also has an end cap B1403 that seals the connecting groove B1402. One connecting groove B1402 is connected to an air inlet B1404, and the other connecting groove B1402 is connected to an exhaust port B1405. The air inlet B1404 and exhaust port B1405 are respectively arranged along the width direction of the planar guide rail A10. The air inlet B1404 is connected to an air inlet pipe B18. The specific structural form of the cooling channel B14 is given, enabling the design of a cold air flow channel within the planar guide rail A10, thereby achieving rapid cooling of the planar guide rail A10 and realizing intelligent temperature rise control.

[0028] The planar guide rail A10 is provided with a mounting hole B26, and the temperature sensor B15 is disposed on the mounting hole B26. The sampling point of the temperature sensor B15 is located close to the surface of the planar guide rail A10 and away from the cooling through hole B1401. This allows for timely and accurate detection of the surface temperature of the planar guide rail A10, ensuring intelligent temperature rise control.

[0029] The workbench 2 has a convex guide rail 27 on one side of its lower end, which is slidably mounted on the V-shaped guide rail 5. On the other side, a flat guide rail B28 is provided, which is slidably mounted on the flat guide rail A10. Polytetrafluoroethylene (PTFE) guide rail strips 43 are respectively provided on the lower end surfaces of the convex guide rail 27 and the flat guide rail B27. The PTFE guide rail strips 43 offer advantages such as low friction coefficient, good wear resistance, and smooth movement, helping to reduce heat generated by friction.

[0030] This invention provides a method for intelligently controlling the temperature rise of guideways in a CNC gantry grinding machine. The method includes designing the V-shaped guideway 5 and the planar guideway A10 as separate components from the machine bed 1, and adopting a segmented structure for both. Positioning guide grooves 3 and mounting grooves 4 are designed on the machine bed 1. The V-shaped guideway 5 is precisely installed on the machine bed 1 by engaging with the positioning guide groove 3 via a positioning key 7 at its lower end. The planar guideway A10 is positioned in the mounting groove 4 and locked to the machine bed 1 by multiple locking blocks 1101. Independent intelligent temperature rise control is performed on each segment of the V-shaped guideway and the planar guideway A10.

[0031] Preferably, a temperature sensor A13 is designed on each V-shaped guide rail 5, and a temperature sensor B15 is designed on each planar guide rail A10. The temperature sensors A13 and B15 transmit the detected temperature to the PLC controller 20 in real time. A cooling channel A12 is designed on each V-shaped guide rail 5, and each cooling channel A12 is connected to a solenoid valve A17. A cooling channel B14 is designed on each planar guide rail A10, and each cooling channel B14 is connected to a solenoid valve B19. The solenoid valves A17 and B19 are respectively connected to the air cooler 21, and the solenoid valves A17, B19, and air cooler 21 are respectively connected to the PLC controller 20.

[0032] The above specific embodiments should not be construed as limiting the scope of protection of the present invention. For those skilled in the art, any alternative improvements or modifications made to the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0033] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. An intelligent control device for temperature rise of guideways in a CNC gantry grinding machine, characterized in that, The system includes a bed, a worktable, and a temperature rise intelligent control unit. The upper end of the bed has a positioning guide groove and a mounting groove along its length. On the side of the bed corresponding to the positioning guide groove, multiple V-shaped guide rails are arranged along its length. Each V-shaped guide rail has a V-shaped surface at its upper end and a positioning key at its lower end. The V-shaped guide rails are precisely installed on the bed through the positioning key and the positioning guide groove. The inner side of the mounting groove is a positioning surface, and the outer side is a locking support surface. Multiple flat guide rails A are arranged sequentially along the length of the mounting groove. The inner side of each flat guide rail A rests against the positioning surface, and a spacer is provided between the outer side and the locking support surface. A locking mechanism is locked onto the bed; a worktable is slidably provided on the upper end of the V-shaped guide rail and the flat guide rail A; the temperature rise intelligent control unit includes a cooling channel A and a temperature sensor A designed on each section of the V-shaped guide rail, and a cooling channel B and a temperature sensor B designed on each section of the flat guide rail A. The cooling channel A is connected to the solenoid valve A through the air inlet pipe A, and the cooling channel B is connected to the solenoid valve B through the air inlet pipe B. The temperature sensor A and the temperature sensor B are respectively connected to the PLC controller, and the solenoid valve A and the solenoid valve B are respectively connected to the air cooler. The PLC controller is respectively connected to the air cooler, the solenoid valve A, and the solenoid valve B.

2. The intelligent control device for temperature rise of CNC gantry grinding machine according to claim 1, characterized in that, The positioning guide groove is recessed in the bed, and the positioning key is protruding at the lower end of the V-shaped guide rail. The positioning guide groove and the positioning key are rectangular, and the depth of the positioning guide groove is not equal to the height of the positioning key.

3. The intelligent control device for temperature rise of CNC gantry grinding machine according to claim 2, characterized in that, The V-shaped guide rail has multiple countersunk holes A evenly spaced along its length. The corresponding guide positioning groove has multiple internal threaded holes A evenly spaced along its length. The countersunk holes A are equipped with internal hexagon screws A. The internal hexagon screws A are installed on the internal threaded holes A to lock the V-shaped guide rail to the bed.

4. The intelligent control device for temperature rise of CNC gantry grinding machine according to claim 3, characterized in that, The cooling channel A includes two sets of cooling through holes symmetrically arranged on a V-shaped guide rail. Each set of cooling through holes includes multiple cooling through holes A evenly spaced apart. Two connecting grooves A are symmetrically arranged at both ends of the V-shaped guide rail. The connecting grooves A connect all the cooling through holes A in the same set. End caps A that seal the connecting grooves A are provided at both ends of the V-shaped guide rail. The two connecting grooves A at one end of the V-shaped guide rail are respectively connected to an air inlet A, and the two connecting grooves A at the other end are respectively connected to an exhaust port A. The air inlet A and the exhaust port A are arranged along the width direction of the V-shaped guide rail, and each air inlet A is connected to an air inlet pipe A.

5. The intelligent control device for temperature rise of CNC gantry grinding machine according to claim 4, characterized in that, The V-shaped guide rail is provided with a mounting hole A, and the temperature sensor A is installed in the mounting hole A. The sampling point of the temperature sensor A is located close to the V-shaped surface and away from the cooling through hole A.

6. The intelligent control device for temperature rise of CNC gantry grinding machine according to claim 1 or 5, characterized in that, The locking mechanism includes multiple locking blocks evenly spaced along the length of the bed. The inner side of each locking block is designed as an inclined surface A, and the outer side is designed as a vertical surface that mates with the locking support surface. The outer side of the flat guide rail A is designed as an inclined surface B that mates with the inclined surface A. Each locking block has a countersunk hole B, and an internal hexagon screw B is provided in the countersunk hole B. The mounting groove between the flat guide rail A and the locking support surface has multiple internal threaded holes B evenly spaced along its length. The internal hexagon screws B are installed in the internal threaded holes B to lock the locking blocks onto the bed and simultaneously lock the flat guide rail A onto the bed.

7. The intelligent control device for temperature rise of CNC gantry grinding machine according to claim 6, characterized in that, The cooling channel B includes a plurality of cooling through holes B evenly distributed along the width direction of the planar guide rail A. The planar guide rail B has connecting grooves B at both ends that connect all the cooling through holes B. The planar guide rail A has end caps B at both ends that seal the connecting grooves B. One connecting groove B is connected to the air inlet B, and the other connecting groove B is connected to the exhaust port B. The air inlet B and the exhaust port B are respectively arranged along the width direction of the planar guide rail A. The air inlet B is connected to the air inlet pipe B.

8. The intelligent control device for temperature rise of CNC gantry grinding machine according to claim 7, characterized in that, The planar guide rail A is provided with a mounting hole B, and the temperature sensor B is installed in the mounting hole B. The sampling point of the temperature sensor B is located close to the surface of the planar guide rail A and away from the cooling through hole B.

9. The intelligent control device for temperature rise of CNC gantry grinding machine according to claim 8, characterized in that, The workbench has a convex guide rail on one side and a flat guide rail B on the other side. The convex guide rail is slidably mounted on the V-shaped guide rail, and the flat guide rail B is slidably mounted on the flat guide rail A. The lower end surfaces of the convex guide rail and the flat guide rail B are respectively provided with polytetrafluoroethylene guide rail strips.

10. A method for intelligently controlling the temperature rise of guideways in a CNC gantry grinding machine, comprising: designing all V-shaped guideways and flat guideways A as separate units from the machine bed; and adopting a segmented structure for both V-shaped and flat guideways A; designing positioning guide grooves and mounting grooves on the machine bed; precisely mounting the V-shaped guideways on the machine bed via positioning keys at their lower ends that engage with the positioning guide grooves; and setting the flat guideways A on the mounting grooves and locking them to the machine bed via multiple locking blocks; and independently controlling the temperature rise of each segment of the V-shaped guideway and flat guideway A. Temperature sensor A is designed on each V-shaped guide rail, and temperature sensor B is designed on each planar guide rail A. Temperature sensor A and temperature sensor B transmit the detected temperature to the PLC controller in real time. Cooling channel A is designed on each V-shaped guide rail, and each cooling channel A is connected to a solenoid valve A. Cooling channel B is designed on each planar guide rail, and each cooling channel B is connected to a solenoid valve B. Solenoid valve A and solenoid valve B are respectively connected to an air cooler. Solenoid valve A, solenoid valve B and air cooler are respectively connected to the PLC controller.

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