Heavy-load grinding anti-overturning lifting device and method for CNC gantry surface grinding machine

Abstract

The present application relates to heavy load grinding anti-overturning lifting device and method of numerical control gantry surface grinding machine, including the parallel arrangement of multiple section main V-shaped guide rail and multiple section rectangular guide rail on the bed upper part, the positioning groove is arranged on the bed upper end and the positioning key is arranged on the lower end of each guide rail, the guide rail back of the rectangular guide rail is provided with guide rail pressing plate and guide rail soft belt structure, which can effectively eliminate the overturning moment caused by heavy load transverse feed grinding, solve the technical problems of large part plane precision out-of-tolerance caused by the plane precision drift of the workbench relative motion of the guide rail pair precision fit, and the heavy load transverse feed grinding knife mark or line; Each section of the main V-shaped guide rail and the rectangular guide rail is uniformly provided with a cooling channel, and the temperature rise of each section of the guide rail is independently and intelligently controlled through the PLC controller, realizing the effect of real-time detection precision and intelligent decision control of the temperature rise of each guide rail in the process of heavy load transverse feed efficient precision grinding.

Description

Technical Field

[0001] This invention relates to the field of CNC gantry surface grinder manufacturing technology, specifically to a heavy-duty grinding anti-overturning lifting device and method for CNC gantry surface grinders. Background Technology

[0002] like Figure 11 The diagram shows the structure of an existing CNC gantry surface grinder. One side of the upper part of the machine bed has an integral main V-shaped guide rail structure fixed to the bed along its length, while the other side has an integral secondary V-shaped guide rail structure separate from the bed. These are fastened to the upper part of the machine bed by bolts and pressure plates. The aforementioned double V-shaped guide rails cooperate with the convex guide rails at the bottom of the worktable to form a sliding guide rail pair. Existing CNC gantry surface grinders suffer from continuous high-speed reciprocating motion, which leads to deformation and distortion of the V-shaped guide rail pair due to sliding friction and heat. In particular, during heavy-load transverse feed grinding, a toppling torque is generated, causing the V-shaped guide rail pair on one side to suspend, resulting in drift in the plane accuracy of the worktable that is precisely matched with it. This causes out-of-tolerance plane accuracy in the precision machining of large, fundamental core parts under heavy loads, and tool marks or textures appear during transverse feed grinding. This fails to meet the high-standard requirements of high-efficiency precision machining of large, fundamental core parts under heavy loads in key industries, severely hindering further improvement in the high-quality of heavy-load plane grinding of large, fundamental core parts in key industries. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned technical problems and provide a heavy-duty grinding anti-overturning lifting device and method for CNC gantry surface grinders, which can meet the high standard requirements of heavy-duty grinding precision and high-efficiency machining of large core basic parts.

[0004] To achieve the above objectives, the present invention employs the following technical solution:

[0005] In a first aspect, the present invention provides a heavy-duty grinding anti-overturning lifting device for a CNC gantry surface grinder, comprising a bed, columns on both sides of the bed, a crossbeam between the columns, a transverse slide on the crossbeam, a vertical ram on the transverse slide, and a horizontal grinding head on the vertical ram; a first positioning groove and a second positioning groove are arranged parallel to each other on the upper part of the bed, a plurality of main V-shaped guide rails are arranged sequentially along the first positioning groove on the upper part of the bed, and a plurality of rectangular guide rails are arranged sequentially along the second positioning groove, with a worktable on the upper part of the main V-shaped guide rails and the rectangular guide rails; a first positioning key that mates with the first positioning groove is provided at the lower end of each main V-shaped guide rail, and a second positioning key that mates with the second positioning groove is provided at the lower end of each rectangular guide rail; each main V-shaped guide rail and the rectangular guide rail are respectively connected by threads. It is fixed to the bed; the lower outer end of the rectangular guide rail is provided with a guide rail groove, the upper end surface of the guide rail groove is the rectangular guide rail sliding working surface, the lower end of the corresponding worktable is provided with a guide rail pressure plate, the upper sliding working surface of the guide rail pressure plate slides on the rectangular guide rail sliding working surface of the guide rail groove through the third guide rail soft belt; each section of the main V-shaped guide rail is provided with a first cooling passage and a first temperature sensor, each section of the rectangular guide rail is provided with a second cooling passage and a second temperature sensor, the first cooling passage is connected to the first solenoid valve and the air cooler in sequence through the first air inlet pipe, the second cooling passage is connected to the second solenoid valve and the air cooler in sequence through the second air inlet pipe, and the first temperature sensor, the second temperature sensor, the first solenoid valve, the second solenoid valve and the air cooler are respectively connected to the PLC controller.

[0006] As a further technical solution, the main V-shaped guide rail is fastened to the bed by a first threaded connection. The first threaded connection includes a plurality of first threaded holes that are provided on the first positioning groove and spaced apart along its length. The upper end of the main V-shaped guide rail is provided with a V-shaped working surface. The middle part of the main V-shaped guide rail is provided with a plurality of first mounting holes that are spaced apart along its length. The first mounting holes are provided with first hexagon socket head cap screws, which are installed on the first threaded holes.

[0007] As a further technical solution, the rectangular guide rail is fastened to the bed by a second threaded connection. The second threaded connection includes a plurality of second threaded holes provided on the second positioning groove and spaced apart along its length. The rectangular guide rail is provided with a plurality of second mounting holes spaced apart along its length. The second mounting holes are provided with second hexagon socket bolts, and the second hexagon socket bolts are installed on the second threaded holes.

[0008] As a further technical solution, the upper ends of the main V-shaped guide rail and the rectangular guide rail are respectively provided with a V-shaped sliding working surface and a planar sliding working surface, the lower end of the worktable is provided with a first guide rail soft strip that slides in cooperation with the V-shaped sliding working surface, and the lower end of the worktable is provided with a second guide rail soft strip that slides in cooperation with the planar sliding working surface.

[0009] As a further technical solution, the main V-shaped guide rail is provided with a first sensor mounting hole in the middle, and a first temperature sensor is provided on the first sensor mounting hole, with the front end of the first temperature sensor close to the V-shaped sliding working surface.

[0010] As a further technical solution, the first cooling passage includes two rows of cooling through holes arranged in a V-shape on the main V-shaped guide rail. Each row of cooling through holes includes a plurality of first cooling through holes spaced apart. One end of the main V-shaped guide rail is provided with a first end cap A, and the other end is provided with a first end cap B. The inner side of the first end cap A is provided with a first connecting groove A that connects all the first cooling through holes. The first end cap A is provided with a first air inlet that connects to the first connecting groove A and is connected to a first air inlet pipe. The inner side of the first end cap B is provided with a first connecting groove B that connects all the first cooling through holes, and the first end cap B is provided with a first exhaust hole that connects to the first connecting groove B.

[0011] As a further technical solution, the rectangular guide rail is inclinedly provided with a second sensor mounting hole in the middle, and a second temperature sensor is provided on the second sensor mounting hole, with the front end of the second temperature sensor close to the planar sliding working surface.

[0012] As a further technical solution, the second cooling passage includes a plurality of second cooling through holes disposed on a rectangular guide rail and respectively arranged along the width direction of the planar sliding working surface and the sliding working surface of the rectangular guide rail. One end of the rectangular guide rail is provided with a second end cap A and the other end is provided with a second end cap B. The inner side of the second end cap A is provided with a second connecting groove A that connects all the second cooling through holes. The second end cap A is provided with a second air inlet that connects to the second connecting groove A and is connected to a second air inlet pipe. The inner side of the second end cap B is provided with a second connecting groove B that connects all the second cooling through holes and the second end cap B is provided with a second exhaust hole that connects to the second connecting groove B.

[0013] Secondly, based on the aforementioned heavy-duty grinding anti-overturning lifting device for CNC gantry surface grinders, the present invention also provides a working method, as follows:

[0014] When the CNC gantry surface grinder is working, the first temperature sensor on each section of the main V-shaped guide rail autonomously collects its temperature in real time and transmits the temperature value to the PLC controller. Similarly, the second temperature sensor on each section of the rectangular guide rail autonomously collects its temperature in real time and transmits the temperature value to the PLC controller. When one or more of the measured temperature values ​​reach the system's set maximum temperature value, the PLC controller intelligently starts the air cooler and automatically opens the first solenoid valve corresponding to the main V-shaped guide rail where the measured temperature value reaches the system's set maximum temperature value, and automatically opens the second solenoid valve corresponding to the rectangular guide rail where the autonomously collected temperature value reaches the set maximum temperature value. The cold air generated by the air cooler enters the first cooling valve in the main V-shaped guide rail that needs cooling through the first air inlet pipe and the opened first solenoid valve. Within the cooling passage, cold air enters the first cooling orifice to intelligently and efficiently cool the main V-shaped guide rail. Cold air generated by the air cooler enters the second cooling passage within the rectangular guide rail that needs cooling through the second air inlet pipe and the opened second solenoid valve. The cold air then enters the second cooling orifice to intelligently and efficiently cool the rectangular guide rail. When the measured temperature of the main V-shaped guide rail reaches the system's set minimum temperature, its corresponding first solenoid valve closes. When the measured temperature of the rectangular guide rail reaches the system's set minimum temperature, its corresponding second solenoid valve closes. When all measured temperatures reach the system's set minimum temperature, the PLC controller intelligently controls the air cooler to stop working. This achieves independent intelligent temperature control for each section of the main V-shaped guide rail and each section of the rectangular guide rail.

[0015] The beneficial effects of this invention are as follows:

[0016] To address the technical challenges of exceeding planar accuracy tolerances and developing tool marks (marks) during the efficient and precise machining of large, fundamental core parts in CNC gantry surface grinders due to continuous high-speed reciprocating motion and heavy-load transverse feed grinding, this application proposes an innovative design to reconstruct the bed guideway structure of the CNC gantry surface grinder. The upper part of the bed features a separate main V-shaped guideway and rectangular guideway structure, with each guideway configured as a multi-segment structure with thermal symmetry. This design primarily solves the problem of thermal expansion caused by sliding friction on the upper guideways of the CNC gantry surface grinder bed. The extension of the guide rails along the length of the bed leads to technical challenges related to thermal deformation and distortion of the guide rails, as well as processing and assembly processes. Secondly, the design incorporates a PTFE guide rail with a low-friction guide rail pair on the back of the rectangular guide rail on one side of the bed, along with a guide rail pressure plate and bolt structure. This completely eliminates the overturning torque generated during heavy-load transverse feed grinding, preventing the guide rail pairs from suspending. It overcomes the technical problem of the worktable's plane accuracy drift caused by the precision fit of the guide rail pairs, resulting in out-of-tolerance plane accuracy of large core components and tool marks or textures during heavy-load transverse feed grinding. By installing PLC controllers within each main V-shaped guide rail and rectangular guide rail section to independently and intelligently control the temperature rise of each guide rail, the accuracy of real-time autonomous acquisition and intelligent decision-making control of temperature rise within the heavy-load transverse feed high-efficiency precision grinding stroke is effectively improved. This achieves the high-quality and demanding requirements of heavy-load precision grinding of large core components such as heavy molds and large measurement and inspection platforms on CNC gantry surface grinders, further enhancing the high quality and manufacturing efficiency of horizontal heavy-load grinding surface products on CNC gantry surface grinders. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the heavy-duty grinding anti-overturning lifting device of the present invention;

[0018] Figure 2 This is a schematic diagram of the heavy-duty grinding anti-overturning lifting device of the present invention from another perspective;

[0019] Figure 3 for Figure 1 Sectional view of AA;

[0020] Figure 4 for Figure 2 Sectional view along the BB direction;

[0021] Figure 5 This is a schematic diagram of the main V-shaped guide rail of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the first end cap A of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the first end cap B of the present invention;

[0024] Figure 8This is a schematic diagram of the rectangular guide rail of the present invention;

[0025] Figure 9 This is a schematic diagram of the structure of the second end cap A of the present invention;

[0026] Figure 10 This is a schematic diagram of the structure of the second end cap B of the present invention;

[0027] Figure 11 This is a schematic diagram of the structure of an existing CNC gantry surface grinder;

[0028] In the diagram, 1. Bed, 2. Column, 3. Crossbeam, 4. Transverse slide, 5. Vertical slide, 6. Horizontal grinding head, 7. First positioning groove, 8. Second positioning groove, 9. Main V-shaped guide rail, 10. Rectangular guide rail, 11. Worktable, 12. First positioning key, 13. Second positioning key, 14. Guide rail groove, 15. Rectangular guide rail sliding working surface, 16. Third guide rail flexible belt, 17. First cooling passage, 1701. First cooling through hole, 1702. First end cover A, 1703. First end cover B, 1704. First connecting groove A, 1705. First air inlet, 1706. First connecting groove B, 1707. First exhaust hole, 18. First temperature sensor, 19. Second cooling passage, 1901. Second cooling through hole, 1902. Second end cover A, 1903. Second end cover B, 1904. Second connecting groove A, 1905. Second air inlet, 1906, Second connecting groove B, 1907, Second exhaust port, 20, Second temperature sensor, 21, First air inlet pipe, 22, First solenoid valve, 23, Second air inlet pipe, 24, Second solenoid valve, 25, Air cooler, 26, PLC controller, 27, First threaded connection, 2701, First threaded hole, 2702, First mounting hole, 2703, First hexagon socket head cap screw, 28, V-shaped sliding working surface, 29, First guide rail soft strip, 30, Second threaded connection, 3001, Second threaded hole, 3002, Second mounting hole, 3003, Second hexagon socket head cap screw, 31, First sensor mounting hole, 32, Second sensor mounting hole, 33, Guide rail pressure plate, 34, Planar sliding working surface, 35, Second guide rail soft strip, 36, Existing integrated main V-shaped guide rail, 37, Existing secondary V-shaped guide rail, 38, Grinding wheel. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] To better understand the technical content of this invention, specific embodiments are described below in conjunction with the accompanying drawings.

[0032] The existing CNC gantry surface grinders suffer from the problem of deformation and distortion of the V-shaped guide rail pair on the upper part of the bed due to sliding friction and heat generation during continuous high-speed reciprocating motion. In particular, when subjected to heavy loads and transverse feed grinding motion, the V-shaped guide rail pair on one side is suspended due to the overturning torque. This causes the accuracy of the worktable plane, which is in precise contact with it, to drift. As a result, the accuracy of the plane of the large basic core parts is out of tolerance when precision-machined under heavy loads, and tool marks (textures) appear during transverse feed grinding. This embodiment innovatively designs a heavy-duty grinding anti-overturning lifting device to address the root causes of the aforementioned technical problems. It employs a separate structure between the bed and the main V-shaped guide rails and rectangular guide rails, with each guide rail being thermally symmetrically arranged in multiple segments. This solves the technical challenges of thermal deformation and distortion of the guide rails caused by sliding friction and thermal expansion (the guide rails extend along the length of the bed) in CNC gantry surface grinders, as well as issues related to machining and assembly processes. Specifically, a low-friction guide rail pair pressure plate structure is installed on the back of one rectangular guide rail, completely eliminating the floating phenomenon between guide rail pairs caused by overturning torque during heavy-load transverse feed grinding. This fundamentally solves the problem of excessive plane accuracy of large core components and tool marks (texture marks) caused by the relative motion of the worktable. Furthermore, independent intelligent temperature control is provided for each segment of the main V-shaped guide rail and rectangular guide rail, further resolving the issue of the inability to accurately and autonomously detect and intelligently control the temperature rise of each guide rail within the stroke of heavy-load transverse feed high-efficiency precision grinding.

[0033] Specifically, such as Figure 1-10As shown, this invention provides a heavy-duty grinding anti-overturning lifting device for a CNC gantry surface grinder, comprising a bed 1, columns 2 on both sides of the bed 1, a crossbeam 3 between the columns 2, a transverse slide 4 on the crossbeam 3, a vertical slide 5 on the transverse slide 4, a horizontal grinding head 6 on the vertical slide 5, and a grinding wheel 38 on the horizontal grinding head 6; the upper part of the bed 1 is provided with parallel and spaced first positioning grooves 7 and second positioning grooves 8, which are integrally designed with the bed 1 and arranged along the length of the bed 1; the upper end of the bed 1 is provided with multiple main V-shaped guide rails 9 along the length of the first positioning groove 7, and multiple rectangular guide rails 9 along the length of the second positioning groove 8. The main V-shaped guide rail 9 and the rectangular guide rail 10 are equipped with a worktable 11 on their upper parts, enabling the worktable 11 to slide with the bed 1 guide rail pair. Each main V-shaped guide rail 9 has a first positioning key 12 at its lower end, which engages with the first positioning groove 7 for precise positioning and installation. Each rectangular guide rail 10 has a second positioning key 13 at its lower end, which engages with the second positioning groove 8 for precise positioning and installation. Each main V-shaped guide rail 9 and the rectangular guide rail 10 are respectively threaded and fastened to the bed 1. The lower outer side of the rectangular guide rail 10 has a guide rail groove 14, the upper surface of which is a rectangular guide rail sliding working surface 15. Correspondingly, the lower end of the worktable 11 has a guide rail groove 14. The guide rail pressure plate 33 is fastened to the worktable 11 by bolts. The upper sliding working surface of the guide rail pressure plate 33 slides on the rectangular guide rail sliding working surface 15 of the guide rail groove 14 through the third guide rail soft belt. The guide rail pressure plate 33, the third guide rail soft belt 16, and the rectangular guide rail sliding working surface 15 cooperate to form a low-friction guide rail pair. Here, the third guide rail soft belt 16 is preferably a polytetrafluoroethylene guide rail belt, which reduces the heat expansion and deformation of the friction pair, and completely eliminates the floating phenomenon between the guide rail pairs caused by the overturning torque during heavy-load transverse feed grinding. This fundamentally solves the problem of the planar accuracy drift of the worktable 11 with which it is precisely matched and the resulting out-of-tolerance planar accuracy of large core basic parts and the problem of tool failure during transverse feed grinding. To address the issue of scratches or marks, each main V-shaped guide rail 9 is equipped with a first cooling channel 17 and a first temperature sensor 18, while each rectangular guide rail 10 is equipped with a second cooling channel 19 and a second temperature sensor 20. The first cooling channel 17 is connected to the first solenoid valve 22 and the air cooler 25 in sequence via the first air inlet pipe 21, and the second cooling channel 19 is connected to the second solenoid valve 24 and the air cooler 25 in sequence via the second air inlet pipe 23. The first temperature sensor 18, the second temperature sensor 20, the first solenoid valve 22, the second solenoid valve 24, and the air cooler 25 are all connected to the PLC controller 26, enabling real-time, accurate, automatic detection and intelligent control of each main V-shaped guide rail 9 and rectangular guide rail 10.Compared with the existing integrated main V-shaped guide rail 36 and the existing secondary V-shaped guide rail 37 structures, the heavy-duty grinding anti-overturning lifting device of this application effectively improves the accuracy of real-time detection of temperature rise of each guide rail within the stroke of heavy-duty transverse feed high-efficiency precision grinding and the effect of intelligent decision control. It meets the high-quality and demanding requirements of heavy-duty grinding precision high-efficiency machining of large core basic parts such as heavy molds and large measurement and inspection platforms on CNC gantry surface grinders, further improving the high quality and manufacturing efficiency of horizontal heavy-duty grinding surface products on CNC gantry surface grinders.

[0034] Furthermore, the main V-shaped guide rail 9 is fastened to the bed 1 via a first threaded connection 27. The first threaded connection 27 includes a plurality of first threaded holes 2701 spaced apart along the length of the first positioning groove 7. The upper end of the main V-shaped guide rail 9 is provided with a V-shaped working surface 28. The middle part of the V-shaped working surface 28 is provided with a plurality of first mounting holes 2702 spaced apart along its length. The first mounting holes 2702 are designed with countersunk holes to ensure the flatness of the surface. A first hexagon socket head cap screw 2703 is provided on the first mounting hole 2702 and is installed on the first threaded hole 2701. The first threaded connection 27 designed in this application makes full use of the structural features of the first positioning groove 7, the first positioning key 12, and the main V-shaped guide rail 9 to achieve stable and reliable installation of the main V-shaped guide rail 9 without affecting the normal use of the V-shaped sliding working surface 28.

[0035] Furthermore, the rectangular guide rail 10 is fastened to the bed 1 by a second threaded connection 29. The second threaded connection 29 includes a plurality of second threaded holes 2901 provided on the second positioning groove 8 and spaced apart along its length. The rectangular guide rail 10 is provided with a plurality of second mounting holes 2902 spaced apart along its length. The second mounting holes 2902 are provided with countersunk holes to ensure the flatness of the surface. The second mounting holes 2902 are provided with second hexagon socket head cap screws 2903, which are installed on the second threaded holes 2901.

[0036] Furthermore, the upper ends of the main V-shaped guide rail 9 and the rectangular guide rail 10 are respectively provided with a V-shaped sliding working surface 28 and a planar sliding working surface 34. The lower end of the worktable 11 is provided with a first guide rail soft strip 29 that slides in cooperation with the V-shaped sliding working surface 28, and the lower end of the worktable 11 is provided with a second guide rail soft strip 35 that slides in cooperation with the planar sliding working surface 34. The first guide rail soft strip 29 and the second guide rail soft strip 35 are preferably polytetrafluoroethylene (PTFE) guide rail strips, which can effectively reduce the heat expansion and deformation of the friction pair.

[0037] Furthermore, the main V-shaped guide rail 9 has a first sensor mounting hole 31 in the middle, and a first temperature sensor 18 is installed on the first sensor mounting hole 31. The front end of the first temperature sensor 18 is close to the V-shaped sliding working surface 28. This accurately reflects the temperature of the V-shaped sliding working surface 28, facilitating timely cooling and intelligent temperature control.

[0038] Furthermore, the first cooling passage 17 includes two rows of cooling through holes arranged in a V-shape on the main V-shaped guide rail 9. Each row of cooling through holes includes a plurality of first cooling through holes 1701 spaced apart. One end of the main V-shaped guide rail 9 is provided with a first end cap A1702, and the other end is provided with a first end cap B1703. The inner side of the first end cap A1702 is provided with a first connecting groove A1704 that connects all the first cooling through holes 1701. The first end cap A1702 is provided with a first air inlet 1705 that connects to the first connecting groove A1704. The first air inlet 1705 is connected to the first air inlet pipe 21. The inner side of the first end cap B1703 is provided with a first connecting groove B1706 that connects all the first cooling through holes 1701. The first end cap B1703 is provided with a first exhaust hole 1707 that connects to the first connecting groove B1706. By arranging multiple first cooling through holes 1701 along the V-shaped sliding working surface 28 on the main V-shaped guide rail 9, uniform, rapid and efficient cooling of the V-shaped sliding working surface 28 can be achieved.

[0039] Furthermore, the rectangular guide rail 10 has a second sensor mounting hole 32 at an angle in the middle, and a second temperature sensor 20 is mounted on the second sensor mounting hole 32. The front end of the second temperature sensor 20 is close to the planar sliding working surface 34. This accurately reflects the temperature of the planar sliding working surface 34, facilitating timely cooling and intelligent temperature control.

[0040] Furthermore, the second cooling passage 19 includes a plurality of second cooling through holes 1901 disposed on the rectangular guide rail 10 and respectively disposed along the width direction of the planar sliding working surface 34 and the rectangular guide rail sliding working surface 15. The rectangular guide rail 10 is provided with a second end cap A1902 at one end and a second end cap B1903 at the other end. The inner side of the second end cap A1902 is provided with a second connecting groove A1904 that connects all the second cooling through holes 1901. The second end cap A1902 is provided with a second air inlet 1905 that connects to the second connecting groove A1904. The second air inlet 1905 is connected to the second air inlet pipe 23. The inner side of the second end cap B1903 is provided with a second connecting groove B1906 that connects all the second cooling through holes 1901. The second end cap B1903 is provided with a second exhaust hole 1907 that connects to the second connecting groove B1906. By setting two rows of second cooling through holes 1901 on the rectangular guide rail 10, the planar sliding working surface 34 and the rectangular guide rail sliding working surface 15 can be cooled simultaneously, ensuring timely cooling and intelligent temperature control of the working surface.

[0041] Secondly, based on the aforementioned heavy-duty grinding anti-overturning lifting device for CNC gantry surface grinders, the present invention also provides a working method, as follows:

[0042] When the CNC gantry surface grinder is working, the first temperature sensor 18 on each section of the main V-shaped guide rail 9 autonomously collects its temperature in real time and transmits the temperature value to the PLC controller 26, and the second temperature sensor 20 on each section of the rectangular guide rail 10 autonomously collects its temperature in real time and transmits the temperature value to the PLC controller 26; when one or more of the detected temperature values ​​reach the system's set maximum temperature, the PLC controller 26 starts the air cooler 25, and opens the first solenoid valve 22 corresponding to the main V-shaped guide rail 9 whose detected temperature value has reached the system's set maximum temperature, and opens the second solenoid valve 24 corresponding to the rectangular guide rail 10 whose detected temperature value has reached the system's set maximum temperature; the cold air generated by the air cooler 25 enters the first cooling passage 17 in the main V-shaped guide rail 9 that needs to be cooled through the first air inlet pipe 21 and the opened first solenoid valve 22, and the cold air enters the first cooling through hole 1701 to cool the main V-shaped guide rail 9 (main V-shaped guide rail 9). To achieve intelligent and efficient cooling of the V-shaped sliding working surface 28 (which is cooled evenly and quickly), the cold air generated by the air cooler 25 enters the second cooling passage 19 within the rectangular guide rail 10 that needs to be cooled through the second air inlet pipe 23 and the opened second solenoid valve 24. The cold air enters the second cooling through hole 1901 to achieve intelligent and efficient cooling of the rectangular guide rail 10 (mainly to cool the planar sliding working surface 34 and the rectangular guide rail sliding working surface 15 evenly and quickly). When the detected temperature value of the main V-shaped guide rail 9 that needs to be cooled reaches the minimum temperature set by the system, its corresponding first solenoid valve 22 closes. When the detected temperature value of the rectangular guide rail 10 that needs to be cooled reaches the minimum temperature set by the system, its corresponding second solenoid valve 24 closes. When all detected temperatures reach the minimum temperature set by the system, the air cooler 25 stops working. This achieves independent intelligent temperature control for each section of the main V-shaped guide rail 9 and each section of the rectangular guide rail 10.

[0043] 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.

[0044] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A heavy-duty grinding anti-tipping lifting device for a CNC gantry surface grinder, comprising a bed, columns on both sides of the bed, a crossbeam between the columns, a transverse slide on the crossbeam, a vertical ram on the transverse slide, and a horizontal grinding head on the vertical ram; characterized in that... The upper part of the bed is provided with a first positioning groove and a second positioning groove spaced parallel to each other. Multiple main V-shaped guide rails are sequentially arranged along the first positioning groove on the upper part of the bed, and multiple rectangular guide rails are sequentially arranged along the second positioning groove. A worktable is provided on the upper part of the main V-shaped guide rails and the rectangular guide rails. Each main V-shaped guide rail has a first positioning key at its lower end that mates with the first positioning groove, and each rectangular guide rail has a second positioning key at its lower end that mates with the second positioning groove. Each main V-shaped guide rail and each rectangular guide rail is fastened to the bed by a threaded connection. A guide rail groove is provided on the lower outer side of each rectangular guide rail, and the upper surface of the guide rail groove is the sliding working surface of the rectangular guide rail. The lower end of the worktable is provided with a guide rail pressure plate. The upper sliding working surface of the guide rail pressure plate slides on the rectangular guide rail sliding working surface of the guide rail groove through the third guide rail soft belt. Each section of the main V-shaped guide rail is provided with a first cooling passage and a first temperature sensor. Each section of the rectangular guide rail is provided with a second cooling passage and a second temperature sensor. The first cooling passage is connected to the first solenoid valve and the air cooler in sequence through the first air inlet pipe. The second cooling passage is connected to the second solenoid valve and the air cooler in sequence through the second air inlet pipe. The first temperature sensor, the second temperature sensor, the first solenoid valve, the second solenoid valve, and the air cooler are respectively connected to the PLC controller.

2. The heavy-duty grinding anti-tipping lifting device for CNC gantry surface grinders according to claim 1, characterized in that, The main V-shaped guide rail is fastened to the bed by a first threaded connection. The first threaded connection includes a plurality of first threaded holes that are provided on the first positioning groove and spaced apart along its length. The middle part of the main V-shaped guide rail is provided with a plurality of first mounting holes spaced apart along its length. The first mounting holes are provided with first hexagon socket bolts, which are installed on the first threaded holes.

3. The heavy-duty grinding anti-overturning lifting device for CNC gantry surface grinders according to claim 1, characterized in that, The rectangular guide rail is fastened to the bed by a second threaded connection. The second threaded connection includes a plurality of second threaded holes provided on the second positioning groove and spaced apart along its length. The rectangular guide rail is provided with a plurality of second mounting holes spaced apart along its length. The second mounting holes are provided with second hexagon socket bolts, which are installed on the second threaded holes.

4. The heavy-duty grinding anti-tipping lifting device for CNC gantry surface grinders according to claim 2 or 3, characterized in that, The upper ends of the main V-shaped guide rail and the rectangular guide rail are respectively provided with a V-shaped sliding working surface and a planar sliding working surface. The lower end of the worktable is provided with a first guide rail soft strip that slides in cooperation with the V-shaped sliding working surface, and the lower end of the worktable is provided with a second guide rail soft strip that slides in cooperation with the planar sliding working surface.

5. The heavy-duty grinding anti-tipping lifting device for CNC gantry surface grinders according to claim 4, characterized in that, The main V-shaped guide rail has a first sensor mounting hole in the middle, and a first temperature sensor is installed in the first sensor mounting hole. The front end of the first temperature sensor is close to the V-shaped sliding working surface.

6. The heavy-duty grinding anti-tipping lifting device for CNC gantry surface grinders according to claim 5, characterized in that, The first cooling passage includes two rows of cooling through holes arranged in a V-shape on the main V-shaped guide rail. Each row of cooling through holes includes a plurality of first cooling through holes spaced apart. One end of the main V-shaped guide rail is provided with a first end cap A, and the other end is provided with a first end cap B. The inner side of the first end cap A is provided with a first connecting groove A that connects all the first cooling through holes. The first end cap A is provided with a first air inlet that connects to the first connecting groove A and is connected to a first air inlet pipe. The inner side of the first end cap B is provided with a first connecting groove B that connects all the first cooling through holes and is provided with a first exhaust hole that connects to the first connecting groove B.

7. The heavy-duty grinding anti-tipping lifting device for a CNC gantry surface grinder according to claim 6, characterized in that, The rectangular guide rail is inclined in the middle and has a second sensor mounting hole. A second temperature sensor is installed in the second sensor mounting hole and the front end of the second temperature sensor is close to the planar sliding working surface.

8. The heavy-duty grinding anti-tipping lifting device for CNC gantry surface grinders according to claim 7, characterized in that, The second cooling passage includes a plurality of second cooling through holes disposed on a rectangular guide rail and respectively arranged along the width direction of the working surface of the planar guide rail and the sliding working surface of the rectangular guide rail. One end of the rectangular guide rail is provided with a second end cap A and the other end is provided with a second end cap B. The inner side of the second end cap A is provided with a second connecting groove A that connects all the second cooling through holes. The second end cap A is provided with a second air inlet that connects to the second connecting groove A and is connected to a second air inlet pipe. The inner side of the second end cap B is provided with a second connecting groove B that connects all the second cooling through holes. The second end cap B is provided with a second exhaust hole that connects to the second connecting groove B.

9. A method for improving anti-overturning performance during heavy-duty grinding on a CNC gantry surface grinder, characterized in that: Including the anti-overturning device for heavy-duty grinding of a CNC gantry surface grinder as described in claim 8, the lifting method includes: When the CNC gantry surface grinder is working, the first temperature sensor on each section of the main V-shaped guide rail autonomously collects its temperature in real time and transmits the temperature value to the PLC controller. Similarly, the second temperature sensor on each section of the rectangular guide rail autonomously collects its temperature in real time and transmits the temperature value to the PLC controller. When one or more of the measured temperature values ​​reach the system's set maximum temperature value, the PLC controller intelligently starts the air cooler and automatically opens the first solenoid valve corresponding to the main V-shaped guide rail where the measured temperature value reaches the system's set maximum temperature value, and automatically opens the second solenoid valve corresponding to the rectangular guide rail where the measured temperature value reaches the system's set maximum temperature value. The cold air generated by the air cooler enters the first cooling system within the main V-shaped guide rail that needs cooling through the first air inlet pipe and the opened first solenoid valve. Within the cooling path, cold air enters the first cooling orifice to intelligently and efficiently cool the main V-shaped guide rail. Cold air generated by the air cooler enters the second cooling path within the rectangular guide rail requiring cooling through the second air inlet pipe and the opened second solenoid valve. The cold air then enters the second cooling orifice to intelligently and efficiently cool the rectangular guide rail. When the measured temperature of the main V-shaped guide rail reaches the system's set minimum temperature, its corresponding first solenoid valve closes. When the measured temperature of the rectangular guide rail reaches the system's set minimum temperature, its corresponding second solenoid valve automatically closes. When all measured temperatures reach the system's set minimum temperature, the PLC controller intelligently controls the air cooler to stop working. This achieves independent intelligent temperature control for each section of the main V-shaped guide rail and each section of the rectangular guide rail.

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