A high-precision planing machining system for a low-friction guide surface of a high-speed elevator guide rail

Abstract

This application provides a high-precision planing system for low-friction guide surfaces of high-speed elevator guide rails, relating to the field of profile processing technology. It includes: a base, a cutting assembly, a slide table, a drive assembly, a lifting assembly, a pressure sensor, and a controller. The base has a lifting rail; the cutting assembly is mounted on the base, forming a cutting channel between them; the slide table is mounted on the lifting rail and can support the workpiece; the drive assembly is drively connected to the slide table and can drive the slide table back and forth along the lifting rail through the cutting channel; the lifting assembly is drively connected to the lifting rail; the pressure sensor is located between the lifting rail and the base and can detect the pressure between them, and is electrically connected to the controller and can send the detection result to the controller; the controller is electrically connected to the lifting assembly, and the controller can control the lifting assembly to drive the two ends of the lifting rail to rise and fall independently, and change the inclination degree of the lifting rail along its length. This application achieves high processing accuracy.

Description

Technical Field

[0001] This application relates to the field of profile processing technology, and in particular to a high-precision planing system for low-friction guide surfaces of high-speed elevator guide rails. Background Technology

[0002] In existing planing systems, planers are generally used to machine the low-friction guide surfaces of high-speed elevator guideways. These planers typically use a slide table to support the workpiece and move it back and forth along the bed guideways, while the cutting tool is fixedly mounted on a crossbeam or tool holder. The planing process is achieved through the reciprocating motion of the slide table.

[0003] However, when the planer is placed on a non-level ground and the slide's moving track is also tilted to the ground, the slide will exert a large inertial impact on the base during its reciprocating motion. This inertial effect can easily cause relative misalignment between the workpiece and the tool in the vertical direction, thereby reducing the machining accuracy of the guide surface.

[0004] In view of this, there is a need to provide a high-precision planing system for the low-friction guide surface of high-speed elevator guide rails. Summary of the Invention

[0005] To address the problem that the machining accuracy of the guide surface is easily reduced when the moving track of an existing planer is tilted to the ground, this application provides a high-precision planing system for the low-friction guide surface of a high-speed elevator guide.

[0006] This application provides a high-precision planing system for low-friction guide surfaces of high-speed elevator guide rails, which adopts the following technical solution: including a base, a cutting assembly, a slide table, a drive assembly, a lifting assembly, a pressure sensor, and a controller, wherein the base is provided with a lifting rail; The cutting assembly is mounted on the base and forms a cutting channel between the two; The slide is mounted on the lifting rail and can support the workpiece; The drive assembly is connected to the slide table and can drive the slide table to move back and forth along the lifting rail through the cutting channel. The lifting assembly is connected to the lifting rail via a transmission. The pressure sensor is located between the lifting rail and the base and can detect the pressure between the lifting rail and the base. The pressure sensor is electrically connected to the controller and can send the detection result to the controller. The controller is electrically connected to the lifting assembly, and the controller can control the lifting assembly to drive the two ends of the lifting rail to lift independently, and change the degree of inclination of the lifting rail in the length direction.

[0007] By adopting the above technical solution, the pressure sensor can detect the pressure between the lifting rail and the base and send the result to the controller. The controller can control the lifting assembly to drive the two ends of the lifting rail to lift independently, changing the degree of inclination along the length of the lifting rail. Compared with existing planers, when placed on an imperfectly level surface and the slide rail is tilted, the reciprocating motion of the slide exerts a large inertial impact on the base, which can easily cause the workpiece and tool to be misaligned in the vertical direction, reducing the machining accuracy of the guide surface. This system can adjust the inclination of the lifting rail in real time according to the pressure detection result, reduce the inertial impact of the slide on the base, avoid the relative misalignment of the workpiece and tool in the vertical direction, and thus improve the machining accuracy of the guide surface.

[0008] Specifically, the drive assembly includes a lead screw and a drive motor. A groove is provided on the base along the length of the lifting rail. The lead screw is rotatably connected in the groove. A lead screw hole adapted to the lead screw is provided on the slide table and the lead screw is sleeved on the lead screw through the lead screw hole. The drive motor is connected to the lead screw and can drive the lead screw to rotate. The lifting rail is connected to the slide table and can restrict the slide table from rotating around the lead screw.

[0009] By adopting the above technical solution, the drive motor drives the lead screw to rotate, and the slide table is sleeved on the lead screw through the lead screw screw hole. Under the condition that the slide table is restricted from rotating around the lead screw by the lifting rail, the rotational motion of the lead screw can be converted into the linear motion of the slide table along the length of the lifting rail. This enables the slide table to pass back and forth through the cutting channel along the lifting rail to perform planing processing on the workpiece. Moreover, this transmission method can make the movement of the slide table more stable and precise, and improve the processing accuracy.

[0010] Furthermore, the lifting rail includes a lower long plate, and a lifting groove is formed on the side wall of the slide along its own length direction. The lower long plate is disposed in the lifting groove. A lower sliding wheel is provided on the slide platform. The lower sliding wheel abuts against the top surface of the lower long plate and can slide along the surface. The lifting assembly is drivenly connected to the lower long plate and can drive the two ends of the lower long plate to lift independently, so as to change the inclination of the top surface of the lower long plate.

[0011] By adopting the above technical solution, the lower long plate is set in the lifting groove on the side wall of the slide. The lower roller of the slide table abuts and slides against the top surface of the lower long plate. At the same time, the lifting assembly can drive the two ends of the lower long plate to lift independently to change the inclination of its top surface. This allows the slide table's moving track to be adjusted according to the actual situation, avoiding the slide table's moving track from tilting due to the planer being placed on an uneven ground. This reduces the inertial impact on the base during the slide table's reciprocating motion and prevents the workpiece and tool from being misaligned in the vertical direction, thereby improving the machining accuracy of the low-friction guide surface of the high-speed elevator guide rail.

[0012] Furthermore, the lifting assembly includes two lifting hydraulic pumps, two lower transmission rods, two lower connecting rods, and two lower piston rods. The base forms two receiving cavities and two lower lifting cavities. Each lifting hydraulic pump, lower lifting cavity, lower piston rod, lower transmission rod, and lower connecting rod corresponds to one of the receiving cavities. Each receiving cavity has a vertically extending lower connecting hole on its bottom wall leading to the corresponding lower lifting cavity. Each lifting groove has a vertically extending lower clearance hole on its bottom wall leading to the corresponding lower lifting cavity. Each lower transmission rod corresponds to one end of the lower long plate, and the top end of each lower transmission rod abuts against the corresponding end on the bottom surface of the lower long plate. The bottom end of the transmission rod passes through the corresponding lower clearance hole and extends into the corresponding lower lifting chamber, and is connected to one end of the corresponding lower connecting rod. The piston end of each lower piston rod is located in the corresponding receiving chamber, and a lifting fluid chamber is formed between the inner bottom wall of the receiving chamber and the piston end of the lower piston rod. The lifting fluid chamber is filled with pressurized fluid. The rod end of each lower piston rod passes through the corresponding connecting hole and extends into the corresponding lower lifting chamber, and is connected to the end of the corresponding lower connecting rod away from the lower long plate. The chamber wall of the lifting fluid chamber is provided with a lifting oil hole leading to the outside. The oil port of the liquid pump is connected to the lifting oil hole through a pipe. Each lifting liquid pump is electrically connected to the controller.

[0013] By adopting the above technical solution, the pressurized fluid can be controlled to enter and exit the lifting fluid chamber using a lifting fluid pump, thereby driving the lower piston rod to move up and down. The lower piston rod drives the lower connecting rod and the lower transmission rod, ultimately realizing the independent lifting and lowering of both ends of the lower long plate. This allows for flexible changes in the inclination of the top surface of the lower long plate to adapt to different work requirements, avoids tilting of the slide rail due to uneven ground where the planer is placed, reduces the inertial impact on the base during the reciprocating motion of the slide, prevents relative misalignment between the workpiece and the tool in the vertical direction, and improves the machining accuracy of the low-friction guide surface of the high-speed elevator guide rail.

[0014] Furthermore, the pressure sensor is a pressure-sensitive resistor, and the pressure-sensitive resistor is provided at the top of each of the lower transmission rods.

[0015] By adopting the above technical solution, a pressure-sensitive resistor is installed at the top of each lower transmission rod as a pressure sensor. This allows for accurate detection of pressure changes between the lower long plate and the lower transmission rod. The pressure-sensitive resistor converts the pressure changes into electrical signals that are transmitted to the controller. Based on these signals, the controller controls the lifting assembly to drive the two ends of the lifting rail to lift independently, thereby changing the inclination of the lifting rail along its length. This prevents the slide rail from tilting due to the planer not being placed on a level surface, thus preventing a large inertial impact on the base during the slide's reciprocating motion. Consequently, it reduces the relative misalignment of the workpiece and the tool in the vertical direction and improves the machining accuracy of the low-friction guide surface of the high-speed elevator guide rail.

[0016] Furthermore, the lifting rail also includes an upper long plate, which is disposed in the lifting groove and directly above the lower upper plate. An upper pulley is provided on the sliding table, and the upper pulley abuts against the bottom surface of the upper long plate and can slide along the plate surface. The lifting assembly further includes two upper transmission rods, two upper connecting rods, and two upper piston rods. Two upper lifting cavities are formed within the base. Each upper lifting cavity, upper piston rod, upper transmission rod, and upper connecting rod corresponds to a receiving cavity. Each receiving cavity has a vertically extending upper connecting hole on its top wall leading to the corresponding upper lifting cavity. Each lifting slot has a vertically extending upper clearance hole on its top wall leading to the corresponding upper lifting cavity. Each upper transmission rod corresponds to one end of an upper long plate. Each upper transmission rod has a dovetail block at its bottom end. Each upper long plate has a section extending along its length on its top surface. Each dovetail block is located in a corresponding dovetail groove and can slide along the dovetail groove. The top end of each upper transmission rod extends through the corresponding upper clearance hole into the corresponding upper lifting cavity and is connected to one end of the corresponding upper connecting rod. The piston end of each upper piston rod is located in the corresponding receiving cavity and forms an adjusting liquid chamber between the piston end of the lower piston rod and the piston end of the upper piston rod. The adjusting liquid chamber is filled with pressurized liquid. The rod end of each upper piston rod extends through the corresponding connecting hole into the corresponding upper lifting cavity and is connected to the end of the corresponding upper connecting rod away from the upper long plate. When the lower piston rod rises and drives the lower connecting rod, the lower transmission rod, and the lower long plate to rise, the upper piston rod can drive the upper connecting rod, the upper transmission rod, and the upper long plate to rise. When the lower piston rod rises and drives the lower connecting rod, the lower transmission rod, and the lower long plate to fall, the upper piston rod can drive the upper connecting rod, the upper transmission rod, and the upper long plate to fall.

[0017] By adopting the above technical solution, an upper long plate and an upper pulley are added, making the sliding of the slide table on the lifting rail more stable; the dovetail block at the bottom of the upper transmission rod cooperates with the dovetail groove at the top of the upper long plate, which can ensure the lifting of the upper long plate while allowing it to have a certain amount of room for movement in the horizontal direction to adapt to the movement of the slide table; when the lower piston rod drives the lower long plate to lift, the upper piston rod can drive the upper long plate to lift synchronously, keeping the distance between the upper and lower long plates unchanged, so as to adapt to the upper pulley and the lower pulley.

[0018] Furthermore, the lifting assembly also includes two regulating liquid pumps, each corresponding to one of the receiving cavities. The regulating liquid chamber has regulating oil holes that lead to the outside. The oil ports of the regulating liquid pumps are connected to the regulating oil holes through pipes. Each regulating liquid pump is electrically connected to the controller. When each of the regulating fluid pumps inputs pressurized fluid into the regulating oil hole, the upper long plate and the lower long plate move away from each other; when each of the regulating fluid pumps extracts pressurized fluid into the regulating oil hole, the upper long plate and the lower long plate move closer to each other.

[0019] By adopting the above technical solution, the input and output of pressurized fluid in the regulating fluid chamber can be controlled by connecting the regulating pump with the regulating oil hole. This allows the upper and lower long plates to move away from or closer to each other, enabling flexible adjustment of the lifting rail structure to accommodate upper and lower pulleys of different specifications. Alternatively, after wear occurs on the lower or upper pulleys, the distance between the upper and lower long plates can be reduced to ensure that the upper pulley is always in close contact with the upper long plate and the lower pulley is always in close contact with the lower long plate.

[0020] Furthermore, the pressure sensor also includes a bearing, a lower wear sensor, and an upper wear sensor. Both the lower wear sensor and the upper wear sensor are piezoresistors. The groove wall of the slide has a bearing hole. The lead screw is inserted into the inner ring of the bearing. The lower wear sensor is located between the outer ring of the bearing and the bottom wall of the bearing hole. The upper wear sensor is located between the outer ring of the bearing and the top wall of the bearing hole. Each of the lower wear sensor and the upper wear sensor is electrically connected to the controller and can feed back the detection results to the controller. When the top of the internal thread of the lead screw hole wears and a gap appears between it and the lead screw, the detection result of the lower wear sensor decreases, and the controller can control each of the lifting hydraulic pumps to drive the lower piston rod to move the lower long plate up until the bottom of the internal thread of the lead screw hole abuts against the lead screw, and the detection result of each of the upper wear sensors increases.

[0021] By adopting the above technical solution, since the lead screw is in a close fit with the lead screw hole during initial assembly, when a heavy workpiece such as an elevator guide rail is placed on the slide, the lead screw and the inner top wall of the lead screw hole will bear a certain pressure, causing the top of the internal thread of the lead screw hole to gradually wear with the back and forth movement of the slide. This wear will then create a gap between the top of the internal thread of the lead screw hole and the lead screw, affecting the stability of the lead screw driving the slide's reciprocating movement. However, the user can use the lower wear sensor and the upper wear sensor to monitor the fit between the lead screw and the lead screw hole in real time. When a gap appears due to wear at the top of the internal thread of the lead screw hole, the detection result of the lower wear sensor will decrease. The controller can control the lifting hydraulic pump to drive the lower piston rod to move the lower long plate upward, so that the bottom of the internal thread of the lead screw hole abuts against the lead screw. The detection result of the upper wear sensor will increase. This can make full use of the thread with less wear at the bottom of the internal thread of the lead screw hole to restore the stable drive of the lead screw on the slide and extend the service life of the slide. It can also give the user sufficient time to purchase a new slide and replace it with a new slide during the project interval.

[0022] Specifically, the cutting assembly includes a rotating shaft, a rotating motor, a cooling nozzle, and multiple cutting blade groups. The rotating shaft is rotatably connected to the base, and the rotating motor is driven by and can drive the rotating shaft to rotate. The multiple cutting blade groups are circumferentially spaced on the rotating shaft, and one of the multiple cutting blade groups located directly below the rotating shaft forms a working blade group. The working blade group forms the cutting channel with the base and can cut the workpiece on the slide. The cooling nozzle is connected to a liquid supply device through a pipe and can spray coolant onto the working blade group.

[0023] By adopting the above technical solution, the rotary motor drives the rotary shaft to rotate, enabling multiple cutting tool groups to be sequentially converted into working tool groups for cutting, thereby improving processing efficiency; the working tool group and the base form a cutting channel to cut the workpiece on the slide, realizing the processing of the low-friction guide surface of the high-speed elevator guide rail; the cooling nozzle sprays coolant onto the working tool group, which can reduce the temperature of the cutting tool group during the cutting process, reduce tool wear, increase tool life, and at the same time improve the processing quality of the workpiece.

[0024] Specifically, it also includes a loading assembly and a unloading assembly. The loading assembly includes a loading gantry, a loading carriage, loading grippers, and a loading drive. The cutting channel is located in the middle of the base. The two ends of the base are respectively formed as loading stations and unloading stations. The loading gantry spans directly above the loading stations. The loading grippers are mounted on the loading carriage. The loading carriage is mounted on the loading gantry and can drive the loading grippers to move closer to or away from the loading station. The loading drive is connected to the loading grippers and can drive the loading grippers to clamp the workpiece. When the loading carriage drives the loading grippers to move closer to the slide table located in the loading station, it drives the loading grippers to release, so that the workpiece clamped by the loading grippers is placed on the slide table. The unloading assembly includes an unloading gantry, an unloading carriage, unloading grippers, and an unloading drive unit. The unloading gantry spans directly above the unloading station. The unloading grippers are mounted on the unloading carriage. The unloading carriage is mounted on the unloading gantry and can move the unloading grippers closer to or away from the unloading station. The unloading drive unit is kinetically connected to the unloading grippers and can drive the unloading grippers to clamp the workpiece on the slide when the unloading carriage moves the unloading grippers closer to the slide located in the unloading station.

[0025] By adopting the above technical solution, the loading carriage of the loading component can drive the loading jaws to approach or move away from the loading station, and the loading drive can drive the loading jaws to clamp the workpiece and release it when it approaches the slide table, thus realizing automatic loading; the unloading carriage of the unloading component can drive the unloading jaws to approach or move away from the unloading station, and the unloading drive can drive the unloading jaws to clamp the workpiece on the slide table when it approaches the slide table, thus realizing automatic unloading, which improves the automation level and processing efficiency of planing the low friction guide surface of high-speed elevator guide rails.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The pressure sensor detects the pressure between the lifting rail and the base. The controller controls the lifting assembly to drive the two ends of the lifting rail to lift independently, changing the tilt of the lifting rail, reducing the inertial impact on the base when the slide table reciprocates, avoiding relative misalignment of the workpiece and the tool in the vertical direction, and improving the machining accuracy of the guide surface. 2. The drive assembly uses a lead screw and a drive motor to stably drive the slide table to move along the lifting rail, ensuring the stability of the planing process; 3. The cutting assembly drives the cutting tool assembly to rotate via a rotating shaft, and the cooling nozzle sprays coolant onto the working tool assembly, which can reduce the temperature during cutting and ensure machining quality. Attached Figure Description

[0027] Figure 1 This is a perspective view of a high-precision planing system for a low-friction guide surface of a high-speed elevator guide rail, as described in this application.

[0028] Figure 2 This is a top view of a high-precision planing system for low-friction guide surfaces of high-speed elevator guideways, as described in this application. Figure 3 It is along Figure 2 A schematic cross-sectional view taken along the AA direction; Figure 4 yes Figure 3 A schematic enlarged view of area B in the middle, showing the bearing, lower wear sensor, and upper wear sensor; Figure 5 It is along Figure 3 A schematic cross-sectional view taken along the CC direction; Figure 6 yes Figure 5 A schematic enlarged view of region D, showing the lifting assembly.

[0029] Attached reference numerals: 1. Base; 11. Lower long plate; 12. Upper long plate; 13. Lifting oil hole; 14. Adjusting oil hole; 2. Cutting assembly; 21. Rotary shaft; 22. Rotary motor; 23. Cooling nozzle; 24. Cutting blade assembly; 3. Slide table; 31. Lower pulley; 32. Upper pulley; 4. Drive assembly; 41. Lead screw; 42. Drive motor; 5. Lifting assembly; 51. Lower transmission rod; 52. Lower connecting rod; 53. Lower piston rod; 54. Upload 541. Moving rod; 55. Dovetail block; 56. Upper connecting rod; 6. Upper piston rod; 6. Pressure sensor; 61. Pressure-sensitive resistor; 62. Bearing; 63. Lower wear sensor; 64. Upper wear sensor; 7. Feeding assembly; 71. Feeding gantry; 72. Feeding trolley; 73. Feeding gripper; 74. Feeding drive component; 8. Unloading assembly; 81. Unloading gantry; 82. Unloading trolley; 83. Unloading gripper; 84. Unloading drive component; 9. Workpiece. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-6 Further explanation: See Figure 1 and Figure 2 A high-precision planing system for low-friction guide surfaces of high-speed elevator guide rails includes a base 1, a cutting assembly 2, a slide 3, two drive assemblies 4, two lifting assemblies 5, multiple pressure sensors 6, a loading assembly 7, a controller (not shown in the figure), and a unloading assembly 8. The cutting assembly 2 is located in the middle of the base 1, forming a loading station and an unloading station at both ends of the base 1, respectively. A cutting channel is formed between the cutting assembly 2 and the base 1. The slide 3 is located on the base 1 and can slide back and forth between the loading station and the unloading station along the length of the cutting channel. The top of the slide 3 is equipped with an electromagnet capable of attracting workpieces 9. The loading assembly 7 includes a loading gantry 71, a loading carriage 72, a loading gripper 73, and a loading drive component 74. The gantry 71 spans directly above the loading station. The loading gripper 73 is mounted on the loading trolley 72. The loading trolley 72 can be a horizontally moving trolley with a lifting platform driven by a drive structure such as a motor, chain assembly, and telescopic cylinder. The loading trolley 72 is mounted on the loading gantry 71 and can drive the loading gripper 73 to approach or move away from the loading station in the horizontal and vertical directions. The loading drive component 74 can be a cylinder. The loading drive component 74 is connected to the loading gripper 73 and can drive the loading gripper 73 to clamp the workpiece 9. When the loading trolley 72 drives the loading gripper 73 to approach the slide table 3 located in the loading station, it drives the loading gripper 73 to release, so that the loading gripper 73 can first clamp the workpiece 9 from elsewhere and then place the clamped workpiece 9 on the slide table 3.

[0031] See Figure 1 and Figure 2The unloading assembly 8 includes an unloading gantry 81, an unloading trolley 82, unloading grippers 83, and an unloading drive unit 84. The unloading gantry 81 spans directly above the unloading station. The unloading grippers 83 are mounted on the unloading trolley 82. The unloading trolley 82 can be a horizontally moving trolley with a lifting platform, driven by a motor, chain assembly, and telescopic cylinder. The unloading trolley 82 is mounted on the unloading gantry 81 and can drive the unloading grippers 83 to move closer to or further away from the unloading trolley in the horizontal and vertical directions. The unloading station has an unloading drive unit 84, which can be a cylinder. The unloading drive unit 84 is connected to the unloading gripper 83 so that the unloading carriage 82 can first drive the unloading gripper 83 to approach the slide table 3 located in the unloading station, then drive the unloading gripper 83 to clamp the workpiece 9 on the slide table 3, and finally drive the unloading gripper 83 to place the workpiece 9 elsewhere, realizing automatic loading and unloading, and improving the automation level and processing efficiency of the low friction guide surface planing of high-speed elevator guide rails.

[0032] See Figure 2 , Figure 4 and Figure 5 Each of the four corners of the slide table 3 has a block-shaped protrusion at its bottom. Each of the four block-shaped protrusions has a screw hole for a lead screw 41 along the length of the slide table 3. Each block-shaped protrusion has three upper rollers and three lower rollers on both sides. Each drive assembly 4 includes a lead screw 41 and a drive motor 42. The base 1 has two sliding grooves along the length of the lifting rail, each corresponding to a lead screw 41. Each sliding groove has bearing holes 62 on both end walls. One end of each lead screw 41 is rotatably connected to the bearing hole 62 at one end of the corresponding sliding groove via a bearing 62. The other end of each lead screw 41 is rotatably connected to the bearing hole 62 at the other end of the corresponding sliding groove via a bearing 62, extending through the bearing hole to the outside and connecting with the output of the corresponding drive motor 42. The shaft is connected, and the body of each drive motor 42 is fixed on the base 1; each pair of lead screws 41 screw holes correspond to one lead screw 41 and are sleeved on the corresponding lead screw 41; each side wall of each slide groove is provided with a lifting groove along its own length direction, and each lifting groove is provided with a lower long plate 11 and an upper long plate 12 facing each other vertically. A lifting rail is formed between the corresponding upper long plate 12 and the lower long plate 11. The upper rollers and lower rollers are divided into four groups in the width direction of the lifting rail. Each group includes six upper rollers and six lower rollers and corresponds to one lifting rail. Each upper roller abuts against the bottom plate surface of the corresponding upper long plate 12 and can slide along the plate surface. Each lower roller 31 abuts against the top plate surface of the corresponding lower long plate 11 and can slide along the plate surface.

[0033] See Figure 3 and Figure 5The lifting assembly 5 includes two lifting hydraulic pumps (not shown in the figure), two lower transmission rods 51, two lower connecting rods 52, and two lower piston rods 53. The base 1 contains two receiving cavities and two lower lifting cavities. Each lifting hydraulic pump, lower lifting cavity, lower piston rod 53, lower transmission rod 51, and lower connecting rod 52 corresponds to a receiving cavity. Each receiving cavity has a vertically extending lower connecting hole on its bottom wall leading to the corresponding lower lifting cavity. Each lifting groove also has a vertically extending lower connecting hole on its bottom wall leading to the corresponding lower lifting cavity. The lower clearance hole corresponds one-to-one with the two ends of the lower transmission rod 51 and the lower long plate 11. The top end of each lower transmission rod 51 abuts against the corresponding end on the bottom surface of the lower long plate 11. The bottom end of each lower transmission rod 51 passes through the corresponding lower clearance hole and extends into the corresponding lower lifting cavity, and connects to one end of the corresponding lower connecting rod 52. The piston end of each lower piston rod 53 is located in the corresponding receiving cavity, and a lifting fluid chamber is formed between the inner bottom wall of the receiving cavity and the piston end of the lower piston rod 53. The lifting fluid chamber is filled with pressurized fluid. The end of the lower piston rod 53 extends through the corresponding connecting hole into the corresponding lower lifting chamber and connects to the end of the corresponding lower connecting rod 52 away from the lower long plate 11. A lifting oil hole 13 is provided on the wall of the lifting fluid chamber to the outside. The oil port of the fluid pump is connected to the lifting oil hole 13 through a pipe. Each lifting fluid pump is electrically connected to the controller. The pressure sensor 6 is a pressure-sensitive resistor 61, and a pressure-sensitive resistor 61 is provided at the top of each lower transmission rod 51. This allows the user to control the flow of pressurized fluid within the lifting fluid chamber using the lifting fluid pump. The piston rod 53 moves up and down, which in turn drives the connecting rod 52 and the transmission rod 51 to achieve independent lifting and lowering of both ends of the lower long plate 11. This allows for flexible adjustment of the tilt of the top surface of the lower long plate 11 to adapt to different work requirements. It also prevents the slide table 3 from tilting due to uneven ground, reduces the inertial impact on the base 1 during the reciprocating motion of the slide table 3, prevents the workpiece 9 from being misaligned with the tool in the vertical direction, and improves the machining accuracy of the low-friction guide surface of the high-speed elevator guide rail.

[0034] See Figure 3 and Figure 5The lifting assembly 5 also includes two regulating liquid pumps (not shown in the figure), two upper transmission rods 54, two upper connecting rods 55, and two upper piston rods 56. Two upper lifting chambers are formed within the base 1. Each upper lifting chamber, upper piston rod 56, upper transmission rod 54, and upper connecting rod 55 corresponds to a receiving chamber. Each receiving chamber has a vertically extending upper connecting hole on its top wall leading to the corresponding upper lifting chamber. Each lifting slot has a vertically extending upper clearance hole on its top wall leading to the corresponding upper lifting chamber. The upper transmission rods 54 are connected to the upper long plate 12 at both ends. Each upper transmission rod 54 has a dovetail block 541 at its bottom end, and each upper long plate 12 has a dovetail groove along its length on its top surface. Each dovetail block 541 is located in the corresponding dovetail groove and can slide along it. The top end of each upper transmission rod 54 passes through the corresponding upper clearance hole and extends into the corresponding upper lifting cavity, connecting to one end of the corresponding upper connecting rod 55. The piston end of each upper piston rod 56 is located in the corresponding receiving cavity, forming an adjusting fluid chamber between the piston end of the lower piston rod 53 and the piston end of the upper piston rod 56. The fluid-saving chamber is filled with pressurized fluid. The rod end of each upper piston rod 56 extends through the corresponding connecting hole into the corresponding upper lifting chamber and is connected to the end of the corresponding upper connecting rod 55 away from the upper long plate 12. When the lower piston rod 53 rises and drives the lower connecting rod 52, the lower transmission rod 51, and the lower long plate 11 to rise, the upper piston rod 56 can drive the upper connecting rod 55, the upper transmission rod 54, and the upper long plate 12 to rise. When the lower piston rod 53 rises and drives the lower connecting rod 52, the lower transmission rod 51, and the lower long plate 11 to fall, the upper piston rod 56 can drive the upper connecting rod 55, the upper transmission rod 54, and the upper long plate 12 to fall. The upper connecting rod 55, the upper transmission rod 54, and the upper long plate 12 descend to make the sliding table 3 slide more stably on the lifting rail. The dovetail block 541 at the bottom of the upper transmission rod 54 cooperates with the dovetail groove at the top of the upper long plate 12, which can ensure the upper long plate 12 rises and falls while allowing it to have a certain amount of room for movement in the horizontal direction to adapt to the movement of the sliding table 3. When the lower piston rod 53 drives the lower long plate 11 to rise and fall, the upper piston rod 56 can synchronously drive the upper long plate 12 to rise and fall, keeping the distance between the upper long plate 12 and the lower long plate 11 unchanged, so as to adapt to the upper pulley 32 and the lower pulley 31.

[0035] See Figure 4 and Figure 5Each regulating pump corresponds to a receiving cavity. The walls of the regulating fluid chambers have regulating oil holes 14 leading to the outside. The oil ports of the regulating pumps are connected to the regulating oil holes 14 via pipes. Each regulating pump is electrically connected to a controller. When each regulating pump inputs pressurized fluid into the regulating oil holes 14, the upper long plate 12 and the lower long plate 11 move away from each other. When each regulating pump extracts pressurized fluid from the regulating oil holes 14, the upper long plate 12 and the lower long plate 11 move closer together, so that the regulating pumps and... The connection of the oil hole 14 can control the input and output of the pressurized fluid in the regulating fluid chamber, thereby allowing the upper long plate 12 and the lower long plate 11 to move away from or closer to each other. This enables flexible adjustment of the lifting rail structure to accommodate upper pulley 32 and lower pulley 31 of different specifications. Alternatively, after wear occurs on the lower pulley 31 or the upper pulley 32, the distance between the upper long plate 12 and the lower long plate 11 can be reduced to ensure that the upper pulley 32 is always in close contact with the upper long plate 12 and the lower pulley 31 is always in close contact with the lower long plate 11.

[0036] See Figure 4 and Figure 5The pressure sensor 6 also includes four lower wear sensors 63 and four upper wear sensors 64. Both the lower wear sensors 63 and upper wear sensors 64 are piezoresistors 61. A lower wear sensor 63 is installed between the outer ring of the bearing 62 at the end of each lead screw 41 and the bottom wall of the bearing 62 hole. An upper wear sensor 64 is installed between the outer ring of the bearing 62 at the end of each lead screw 41 and the top wall of the bearing 62 hole. Each lower wear sensor 63 and upper wear sensor 64 is electrically connected to the controller and can... The detection results are fed back to the controller; since the lead screw 41 is in contact with the lead screw 41 screw hole during initial assembly, when a heavy workpiece 9, such as an elevator guide rail, is placed on the slide table 3, the lead screw 41 and the inner top wall of the lead screw 41 screw hole will bear a certain pressure, causing the top of the internal thread of the lead screw 41 screw hole to gradually wear with the back and forth movement of the slide table 3. This wear will then create a gap between the top of the internal thread of the lead screw 41 screw hole and the lead screw 41, affecting the stability of the lead screw 41 driving the slide table 3 to reciprocate; when the lead screw 41 When the top of the internal thread of the screw hole wears and a gap appears between it and the lead screw 41, the detection result of the lower wear sensor 63 decreases. The controller can then control each lifting hydraulic pump to drive the lower piston rod 53 to move the lower long plate 11 upward until the bottom of the internal thread of the screw hole of the lead screw 41 abuts against the lead screw 41, and the detection results of each upper wear sensor 64 increase. This allows the user to monitor the fit between the lead screw 41 and the screw hole of the lead screw 41 in real time using the lower wear sensor 63 and the upper wear sensor 64. When the top of the internal thread of the screw hole of the lead screw 41 wears... When a gap occurs, the detection result of the lower wear sensor 63 will decrease. The controller can control the lifting hydraulic pump to drive the lower piston rod 53 to move the lower long plate 11 upward, so that the bottom of the thread inside the screw hole of the lead screw 41 abuts against the lead screw 41. The detection result of the upper wear sensor 64 will increase. This can make full use of the thread with less wear at the bottom of the thread inside the screw hole of the lead screw 41 to restore the stable drive of the lead screw 41 on the slide table 3, extend the service life of the slide table 3, and give users enough time to purchase a new slide table 3 and replace it with a new slide table 3 during the construction period.

[0037] See Figure 1 and Figure 5 The cutting assembly 2 includes a rotating shaft 21, a rotary motor 22, a cooling nozzle 23, and multiple cutting blade groups 24. The rotating shaft 21 is rotatably connected to the base 1. The rotary motor 22 is driven by the rotating shaft 21 and can drive the rotating shaft 21 to rotate. Multiple cutting blade groups 24 are arranged circumferentially on the rotating shaft 21, and one of the multiple cutting blade groups 24 located directly below the rotating shaft 21 forms a working blade group. A cutting channel is formed between the working blade group and the base 1, which can cut the workpiece 9 on the slide table 3. The cooling nozzle 23 is connected to a liquid supply device through a pipe and can spray coolant onto the working blade group to reduce the temperature of the cutting blade group 24 during the cutting process, reduce tool wear, increase tool life, and improve the machining quality of the workpiece 9.

[0038] Specifically, the bearing 62 on the lead screw 41 can be a flexible bearing 62 with a certain radial deformation capability, so that when the lifting assembly 5 adjusts the tilt of the lifting rail relative to the horizontal plane, the lead screw 41 can also be adjusted accordingly. However, in order to avoid excessive deformation of the flexible bearing 62, the site of the high-precision planing machining system for the low-friction guide surface of this high-speed elevator guide rail should be as flat as possible, preferably so that the initial angle between the length direction of the lifting rail and the horizontal plane is less than 5°.

[0039] The implementation principle of the high-precision planing system for low-friction guide surfaces of high-speed elevator guideways described in this application is as follows: Pressure sensor 6 detects the pressure between the lifting rail and the base 1 and sends the result to the controller. The controller can control the lifting assembly 5 to drive the two ends of the lifting rail to lift independently, changing the degree of inclination along the length of the lifting rail. Compared with existing planers, when placed on an imperfectly level surface and the slide 3's moving rail is tilted, the reciprocating motion of the slide 3 exerts a large inertial impact on the base 1, which can easily cause the workpiece 9 and the tool to be misaligned in the vertical direction, reducing the machining accuracy of the guide surface. This system can adjust the inclination of the lifting rail in real time according to the pressure detection result, reducing the inertial impact of the slide 3 on the base 1, avoiding the relative misalignment of the workpiece 9 and the tool in the vertical direction, thereby improving the machining accuracy of the guide surface.

[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-precision planing system for low-friction guide surfaces of high-speed elevator guide rails, characterized in that: It includes a base (1), a cutting assembly (2), a slide (3), a drive assembly (4), a lifting assembly (5), a pressure sensor (6), and a controller. The base (1) is provided with a lifting rail. The cutting assembly (2) is disposed on the base (1) and forms a cutting channel between the two; The slide (3) is mounted on the lifting rail and can support the workpiece (9); The drive assembly (4) is connected to the slide (3) and can drive the slide (3) to move back and forth along the lifting rail through the cutting channel; The lifting assembly (5) is connected to the lifting rail via a transmission. The pressure sensor (6) is located between the lifting rail and the base (1) and can detect the pressure between the lifting rail and the base (1). The pressure sensor (6) is electrically connected to the controller and can send the detection result to the controller. The controller is electrically connected to the lifting assembly (5), and the controller can control the lifting assembly (5) to drive the two ends of the lifting rail to lift independently, and change the degree of inclination of the lifting rail in the length direction.

2. The high-precision planing system for low-friction guide surfaces of high-speed elevator guideways according to claim 1, characterized in that: The drive assembly (4) includes a lead screw (41) and a drive motor (42). A groove is provided on the base (1) along the length of the lifting rail. The lead screw (41) is rotatably connected in the groove. A screw hole for the lead screw (41) is provided on the slide (3) and the slide is sleeved on the lead screw (41) through the screw hole. The drive motor (42) is connected to the lead screw (41) and can drive the lead screw (41) to rotate. The lifting rail is connected to the slide (3) and can restrict the slide (3) from rotating around the lead screw (41).

3. The high-precision planing system for low-friction guide surfaces of high-speed elevator guideways according to claim 2, characterized in that: The lifting rail includes a lower long plate (11). The side wall of the slide groove is provided with a lifting groove along its own length direction. The lower long plate (11) is located in the lifting groove. The slide table (3) is provided with a lower sliding wheel (31). The lower sliding wheel (31) abuts against the top plate surface of the lower long plate (11) and can slide along the plate surface. The lifting assembly (5) is connected to the lower long plate (11) and can drive the two ends of the lower long plate (11) to lift independently, so as to change the inclination of the top plate surface of the lower long plate (11).

4. The high-precision planing system for low-friction guide surfaces of high-speed elevator guideways according to claim 3, characterized in that: The lifting assembly (5) includes two lifting hydraulic pumps, two lower transmission rods (51), two lower connecting rods (52), and two lower piston rods (53). The base (1) contains two receiving cavities and two lower lifting cavities. Each lifting hydraulic pump, lower lifting cavity, lower piston rod (53), lower transmission rod (51), and lower connecting rod (52) corresponds to a receiving cavity. Each receiving cavity has a vertically opening lower connecting hole on its bottom wall leading to the corresponding lower lifting cavity. Each lifting groove has a vertically opening lower clearance hole on its bottom wall leading to the corresponding lower lifting cavity. Each lower transmission rod (51) corresponds to one end of the lower long plate (11). The top end of each lower transmission rod (51) abuts against the corresponding end on the bottom surface of the lower long plate (11). The bottom end of the lower transmission rod (51) extends through the corresponding lower clearance hole into the corresponding lower lifting chamber and is connected to one end of the corresponding lower connecting rod (52). The piston end of each lower piston rod (53) is located in the corresponding receiving chamber and a lifting liquid chamber is formed between the inner bottom wall of the receiving chamber and the piston end of the lower piston rod (53). The lifting liquid chamber is filled with pressurized liquid. The rod end of each lower piston rod (53) extends through the corresponding connecting hole into the corresponding lower lifting chamber and is connected to one end of the corresponding lower connecting rod (52) away from the lower long plate (11). The chamber wall of the lifting liquid chamber is provided with a lifting oil hole (13) leading to the outside. The oil port of the liquid pump is connected to the lifting oil hole (13) through a pipe. Each lifting liquid pump is electrically connected to the controller.

5. A high-precision planing system for low-friction guide surfaces of high-speed elevator guideways according to claim 4, characterized in that: The pressure sensor (6) is a pressure-sensitive resistor (61), and the pressure-sensitive resistor (61) is provided at the top of each of the lower transmission rods (51).

6. The high-precision planing system for low-friction guide surfaces of high-speed elevator guideways according to claim 5, characterized in that: The lifting rail also includes an upper long plate (12), which is located in the lifting groove and directly above the lower upper plate. The slide table (3) is provided with an upper pulley (32), which abuts against the bottom plate surface of the upper long plate (12) and can slide along the plate surface. The lifting assembly (5) further includes two upper transmission rods (54), two upper connecting rods (55), and two upper piston rods (56). Two upper lifting cavities are formed within the base (1). Each upper lifting cavity, upper piston rod (56), upper transmission rod (54), and upper connecting rod (55) corresponds to a receiving cavity. Each receiving cavity has a vertically opening upper connecting hole on its top wall leading to the corresponding upper lifting cavity. Each lifting groove has a vertically opening upper clearance hole on its top wall leading to the corresponding upper lifting cavity. Each upper transmission rod (54) corresponds to one end of the upper long plate (12). Each upper transmission rod (54) has a dovetail block (541) at its bottom end. Each upper long plate (12) has a dovetail block (541) on its top surface. A dovetail groove is provided along the length direction. Each dovetail block (541) is located in the corresponding dovetail groove and can slide along the dovetail groove. The top end of each upper transmission rod (54) extends through the corresponding upper clearance hole into the corresponding upper lifting cavity and is connected to one end of the corresponding upper connecting rod (55). The piston end of each upper piston rod (56) is located in the corresponding receiving cavity and forms an adjusting liquid chamber between the piston end of the lower piston rod (53) and the piston end of the upper piston rod (56). The adjusting liquid chamber is filled with pressure-bearing liquid. The rod end of each upper piston rod (56) extends through the corresponding connecting hole into the corresponding upper lifting cavity and is connected to one end of the corresponding upper connecting rod (55) away from the upper long plate (12). When the lower piston rod (53) rises and drives the lower connecting rod (52), the lower transmission rod (51), and the lower long plate (11) to rise, the upper piston rod (56) can drive the upper connecting rod (55), the upper transmission rod (54), and the upper long plate (12) to rise. When the lower piston rod (53) rises and drives the lower connecting rod (52), the lower transmission rod (51), and the lower long plate (11) to fall, the upper piston rod (56) can drive the upper connecting rod (55), the upper transmission rod (54), and the upper long plate (12) to fall.

7. A high-precision planing system for low-friction guide surfaces of high-speed elevator guideways according to claim 6, characterized in that: The lifting assembly (5) also includes two regulating liquid pumps, each corresponding to one of the receiving cavities. The regulating liquid chamber has a regulating oil hole (14) leading to the outside. The oil port of the regulating liquid pump is connected to the regulating oil hole (14) through a pipe. Each regulating liquid pump is electrically connected to the controller. When each of the regulating liquid pumps inputs pressurized liquid into the regulating oil hole (14), the upper long plate (12) and the lower long plate (11) move away from each other; when each of the regulating liquid pumps extracts pressurized liquid into the regulating oil hole (14), the upper long plate (12) and the lower long plate (11) move closer to each other.

8. A high-precision planing system for low-friction guide surfaces of high-speed elevator guideways according to claim 6, characterized in that: The pressure sensor (6) also includes a bearing (62), a lower wear sensor (63), and an upper wear sensor (64). The lower wear sensor (63) and the upper wear sensor (64) are both piezoresistors (61). The groove wall of the slide is provided with a bearing (62) hole. The lead screw (41) is inserted into the inner ring of the bearing (62). The lower wear sensor (63) is located between the outer ring of the bearing (62) and the bottom wall of the bearing (62) hole. The upper wear sensor (64) is located between the outer ring of the bearing (62) and the top wall of the bearing (62) hole. Each of the lower wear sensor (63) and the upper wear sensor (64) is electrically connected to the controller and can feed back the detection results to the controller. When the top of the internal thread of the lead screw (41) is worn and a gap appears between it and the lead screw (41), the detection result of the lower wear sensor (63) becomes smaller, and the controller can control each of the lifting pumps to drive the lower piston rod (53) to move the lower long plate (11) upward until the bottom of the internal thread of the lead screw (41) abuts against the lead screw (41), and the detection result of each of the upper wear sensors (64) becomes larger.

9. A high-precision planing system for low-friction guide surfaces of high-speed elevator guideways according to claim 1, characterized in that: The cutting assembly (2) includes a rotating shaft (21), a rotary motor (22), a cooling nozzle (23), and multiple cutting blade groups (24). The rotating shaft (21) is rotatably connected to the base (1). The rotary motor (22) is connected to the rotating shaft (21) and can drive the rotating shaft (21) to rotate. The multiple cutting blade groups (24) are arranged circumferentially on the rotating shaft (21), and one of the multiple cutting blade groups (24) located directly below the rotating shaft (21) forms a working blade group. The working blade group forms the cutting channel with the base (1) and can cut the workpiece (9) on the slide (3). The cooling nozzle (23) is connected to the liquid supply device through a pipe and can spray coolant onto the working blade group.

10. A high-precision planing system for low-friction guide surfaces of high-speed elevator guideways according to claim 1, characterized in that: It also includes a loading assembly (7) and a unloading assembly (8). The loading assembly (7) includes a loading gantry (71), a loading cart (72), loading grippers (73), and a loading drive unit (74). The cutting channel is located in the middle of the base (1). The two ends of the base (1) are respectively formed as loading stations and unloading stations. The loading gantry (71) spans directly above the loading station. The loading grippers (73) are located on the loading cart (72). The loading cart (72) is located on the upper... The material gantry (71) can drive the loading claw (73) to move closer to or away from the loading station. The loading drive (74) is connected to the loading claw (73) and can drive the loading claw (73) to clamp the workpiece (9). When the loading cart (72) drives the loading claw (73) to move closer to the slide (3) located in the loading station, the loading claw (73) is driven to release, so that the workpiece (9) clamped by the loading claw (73) is placed on the slide (3). The unloading assembly (8) includes an unloading gantry (81), an unloading carriage (82), unloading grippers (83), and an unloading drive unit (84). The unloading gantry (81) spans directly above the unloading station. The unloading grippers (83) are mounted on the unloading carriage (82). The unloading carriage (82) is mounted on the unloading gantry (81) and can move the unloading grippers (83) closer to or away from the unloading station. The unloading drive unit (84) is connected to the unloading grippers (83) and can drive the unloading grippers (83) to clamp the workpiece (9) on the slide table (3) when the unloading carriage (82) moves the unloading grippers (83) closer to the slide table (3) located in the unloading station.

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