A linear guide grinding machine

Abstract

The present invention discloses a linear guide rail grinding machine, which relates to the technical field of grinding linear guide rails, comprising a machine tool base, a first gantry, a second gantry, a base guide rail and a workbench magnetic table, wherein the base guide rail is arranged on the top surface of the machine tool base, the workbench magnetic table is arranged between the two base guide rails, and a linear motor is arranged on the surface of the machine tool base; the material of the present invention is integrally formed by Meehanite cast iron, the machine tool base is cast in a mold pressure-maintaining mode, and the bottom end of the machine tool base is infiltrated with finite elements to effectively maintain support rigidity, and the support adopts linear rails installed on both sides, so the support rigidity is good; vertical grinding heads one and two can be used to grind both sides of the linear guide rail at the same time, reducing the number of times the workpiece is clamped, thereby making the linear guide rail processing accuracy higher, not only can the linear guide rail moving back and forth be guided, but also the linear guide rail is pushed to the center under the action of a telescopic spring to avoid large deviation of the linear guide rail.

Description

Technical Field

[0001] The present invention relates to the technical field of linear guide rail grinding, in particular to a linear guide rail grinding machine. Background Art

[0002] Grinding is an important step in the processing of linear guide rails. It is used to ensure the flatness and smoothness of the guide rail surface and to remove scratches and other defects that may occur during the processing. The grinding machine is a special equipment for processing linear guide rails. It can grind in the direction of the guide rail at the same time, thereby improving processing accuracy and efficiency.

[0003] In the prior art, the linear guide rail needs to be installed on the surface of the workbench magnetic table during processing. Since the grinding head needs to grind both sides and the top surface of the linear guide rail, the linear guide rail needs to be grinded multiple times at different positions during grinding, and the mold needs to be repeatedly clamped, resulting in low grinding accuracy on both sides of the linear guide rail. In addition, grinding the linear guide rail separately with one or two grinding heads will also affect the grinding accuracy. Even grinding with two grinding heads separately will cause the linear guide rail adsorbed on the workbench magnetic table to shift, which will also affect the grinding accuracy of the linear guide rail. Summary of the Invention

[0004] The purpose of the present invention is to provide a linear guide rail grinder to solve the problem proposed in the above background technology that grinding a linear guide rail alone with one or two grinding heads will affect the grinding accuracy, and even grinding with two grinding heads separately will cause the linear guide rail adsorbed on the magnetic table of the workbench to shift, which will also affect the grinding accuracy of the linear guide rail.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A linear guide grinding machine comprises a machine tool base, a first gantry, a second gantry, a base guide rail and a workbench magnetic table, wherein the base guide rail is arranged on the top surface of the machine tool base, the workbench magnetic table is arranged between the two base guide rails, a linear motor is arranged on the surface of the machine tool base, and the direction of the base guide rail is the same as the moving direction of the workbench magnetic table, the first gantry and the second gantry are installed in the middle of the machine tool base; the material of the machine tool base is integrally formed using 340 Miehanna cast iron, the first gantry and the second gantry are integrally cast, and the material is FC-300 Miehanna cast iron, two groups of moving seats three are horizontally arranged in the middle of the upper end of the second gantry, and moving blocks are arranged on the back of the two moving seats three, and the moving blocks are fixed to the back of the moving seat three with bolts, and the intersection of the second gantry and the two groups of moving seats three is provided with screws. The threaded rod passes through the moving block on the back of the moving seat three, and a servo motor 1 is provided at one end of the threaded rod near the edge of the second gantry. The output end of the servo motor 1 rotates synchronously with the linear motor, and the movement direction of the moving seat three is horizontal. The end faces of the two moving seats three are both provided with moving seats four, and the contact surface between the moving seat four and the moving seat three is provided with a matching guide rail 2 arranged in the vertical direction. The top of the moving seat four is installed with a servo motor 2, and the end of the servo motor 2 is connected to the moving seat three through a screw. The movement direction of the moving seat four is vertical, and the end faces of the two moving seats four are both installed with a spindle head 2, and the ends of the two spindle heads 2 are respectively provided with a vertical grinding head 1 and a vertical grinding head 2, and the vertical grinding head 1 and the vertical grinding head 2 are arranged opposite to each other, and the vertical grinding head 1 and the vertical grinding head 2 are symmetrical about the axis of the workbench magnetic table.

[0007] As a preferred technical solution of the present invention, the servo motor 1 is installed at both ends of the second gantry, and two sets of matching guide rails 1 are provided at the three-phase contact between the second gantry and the movable seat. The matching guide rail 1 includes a slide rail and a slider that slide relative to each other. The slide rail is installed on the edge of the second gantry, and the slider is installed on the back of the movable seat 3.

[0008] As a preferred technical solution of the present invention, both ends of each threaded rod are rotatably connected to the two fixed ends, the moving block is connected to the threaded rod through threads of the same specification, and the moving blocks of the two groups of moving seats three approach or move away from each other.

[0009] As a preferred technical solution of the present invention, a movable seat 1 and a movable seat 2 are installed at the upper end of the first gantry, a horizontal drive motor shaft and a vertical drive motor shaft are installed between the movable seat 1 and the first gantry, the movement direction of the movable seat 1 is horizontal, and the movement direction of the movable seat 2 is vertical, and a spindle head 1 is installed at the bottom end of the movable seat 2, and the grinding wheel of the spindle head 1 is arranged horizontally.

[0010] As a preferred technical solution of the present invention, the linear motor is arranged between the machine tool base and the workbench magnetic table, and the guide rail of the linear motor is fixed to the top surface of the machine tool base, and the moving terminal of the linear motor is fixed to the bottom end of the workbench magnetic table.

[0011] As a preferred technical solution of the present invention, a stop block and a limiting roller are provided on the surface of the machine tool base and at one end of the base guide rail. The limiting roller is located on one side of the stop block. The cross-sectional shape of the stop block is L-shaped, and the inclined surface of the stop block is flush with the bottom end of the workbench magnetic table, and the upper end roller shaft of the limiting roller is in contact with the end of the workbench magnetic table.

[0012] As a preferred technical solution of the present invention, the bottom ends of the two spindle heads two are each equipped with two mutually rotating clamping plates one and two, the top of the clamping plate one is welded with a connecting ring, the connecting ring is rotatably connected to the end face of the spindle head two, the end of the clamping plate one and the end of the clamping plate two are respectively equipped with movable wheels one and two, the mating surfaces of the clamping plate one and the clamping plate two are respectively provided with arc-shaped reserved grooves two and reserved groove one, a gear is installed in the middle of the clamping plate two and inside the reserved groove one, an inner wall of the reserved groove two is provided with tooth two, an inner wall of the reserved groove one is provided with tooth one, and tooth one and tooth two are located on both sides of the gear, the gear is meshed with tooth one and tooth two, and the clamping plate one and the clamping plate two rotate in opposite directions.

[0013] As a preferred technical solution of the present invention, two fixing plates are welded to the bottom end surface of each of the spindle heads 2, and the clamping plate 1 and the clamping plate 2 are both connected to the fixing plates via telescopic springs.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The machine tool base is equipped with a one-piece molding of 340 Miehanna cast iron. The machine tool base is cast in a mold pressure-maintaining mode. Long-term pressure maintenance can effectively eliminate casting stress. The bottom of the machine tool base is infiltrated with finite elements to effectively maintain support rigidity and offset most deformation disturbances. The first and second gantries are equipped with an integrated casting of FC-300 Miehanna cast iron. The support adopts linear rails installed on both sides, which has good support rigidity.

[0016] The vertical grinding head 1 and the vertical grinding head 2 are arranged opposite to each other, and can be used to grind both sides of the linear guide rail at the same time. In combination with the spindle head 1, three sides of the linear guide rail can be ground, reducing the number of workpiece clamping times, thereby making the linear guide rail processing accuracy higher;

[0017] A stop block and a limit roller are provided. When the magnetic table of the workbench moves to the limit position, the limit roller can be used to limit the position, thereby preventing the magnetic table of the workbench from exceeding the limit position when the magnetic table of the workbench is moved;

[0018] The linear guide can be clamped by four movable wheels that fit into both sides of the linear guide. Not only can the linear guide moving back and forth be guided, but also the linear guide can be pushed to the center under the action of the telescopic spring to avoid large deviation of the linear guide. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a main structural diagram of a linear guide rail grinding machine of the present invention;

[0021] Figure 2 This is a schematic diagram of a machine base and a linear motor of a linear guide rail grinder according to the present invention;

[0022] Figure 3 This is a schematic diagram of the installation of a spindle head of a linear guide rail grinder according to the present invention;

[0023] Figure 4 Schematic diagram of servo motor 1 and servo motor 2 of a linear guide rail grinder according to the present invention;

[0024] Figure 5 A schematic diagram of a moving block and a threaded rod of a linear guide rail grinder according to the present invention;

[0025] Figure 6 A linear guide rail grinding machine according to the present invention Figure 2 Enlarged image;

[0026] Figure 7 Schematic diagram of vertical grinding head 1 and vertical grinding head 2 of a linear guide rail grinding machine according to the present invention;

[0027] Figure 8 This is a schematic diagram of tooth 1, tooth 2 and a gear of a linear guide rail grinder of the present invention.

[0028] In the figure: 1. Machine tool base; 2. First gantry; 3. Second gantry; 4. Base guide rail; 5. Workbench magnetic table; 6. Moving seat 1; 7. Moving seat 2; 8. Spindle head 1; 9. Moving seat 3; 10. Moving seat 4; 11. Spindle head 2; 12. Vertical grinding head 1; 13. Vertical grinding head 2; 14. Linear motor; 15. Stop block; 16. Limit roller; 17. Clamping plate 1; 1 8. Servo motor 1; 19. Matching guide rail 1; 20. Servo motor 2; 21. Matching guide rail 2; 22. Fixed end; 23. Moving block; 24. Threaded rod; 25. Clamping plate 2; 26. Movable wheel 1; 27. Movable wheel 2; 28. Fixed plate; 29. Telescopic spring; 30. Reserved slot 1; 31. Tooth 1; 32. Reserved slot 2; 33. Tooth 2; 34. Gear; 35. Connecting ring. DETAILED DESCRIPTION

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention. Example 1:

[0030] See also Figure 1 - Figure 5As shown, a linear guide grinding machine includes a machine tool base 1, a first gantry 2, a second gantry 3, a base guide rail 4 and a workbench magnetic table 5, the base guide rail 4 is arranged on the top surface of the machine tool base 1, the workbench magnetic table 5 is arranged between the two base guide rails 4, the base guide rail 4 is located at the two edges of the machine tool base 1, a linear motor 14 is provided on the surface of the machine tool base 1, the workbench magnetic table 5 moves along the base guide rail 4, so that the workbench magnetic table 5 can be moved to a suitable position, and the linear guide can be magnetically attracted to the surface of the workbench magnetic table 5 by the workbench magnetic table 5, and the direction of the base guide rail 4 is the same as the moving direction of the workbench magnetic table 5, the first gantry 2 and the second gantry 3 are installed in the middle of the machine tool base 1, and the workbench magnetic table 5 is located below the first gantry 2 and the second gantry 3 and moves, so that the linear guide on the surface of the workbench magnetic table 5 is moved to the grinding tool for grinding;The material of the machine tool base 1 is 340 Meehanite cast iron, and the first gantry 2 and the second gantry 3 are integrally cast. The material is FC-300 Meehanite cast iron. Two groups of movable seats 3 9 are horizontally arranged in the middle of the upper end of the second gantry 3. The machine tool base 1 is integrally formed with Meehanite cast iron. The machine tool base 1 made of Meehanite cast iron is cast in a mold pressure holding mode. The pressure holding time is more than half a month, which effectively eliminates the casting stress. The bottom end and column of the machine tool base 1 are infiltrated with finite elements to effectively maintain the support rigidity and offset most of the deformation disturbance. A movable block 23 is provided on the back of the two movable seats 3 9. The movable block 23 is fixed to the back of the movable seat 3 9 with bolts, and the movable seat 3 9 is installed on the back of the movable block 23. Two groups of fixed ends 22 are installed on the second gantry 3, and the two fixed ends 22 of each group are located on both sides of the second gantry 3. The second gantry 3 and the two groups of moving seats 3 9 are intersected with threaded rods 24. The threaded rods 24 pass through the inside of the moving block 23 on the back of the moving seat 3 9. A servo motor 18 is provided at one end of the threaded rod 24 and near the edge of the second gantry 3. The output end of the servo motor 18 rotates synchronously with the linear motor 14. The movement direction of the moving seat 3 9 is horizontal movement. The servo motor 18 can drive the threaded rod 24 to rotate, so that the threaded rod 24 and the moving block 23 are threadedly transmitted, so that the moving block 23 moves horizontally along the threaded rod 24, which can drive the moving seat 3 9 along the two The matching guide rail 19 moves, and the end faces of the two moving seats 3 9 are both provided with a moving seat 4 10. The contact surface between the moving seat 4 10 and the moving seat 3 9 is provided with a matching guide rail 21 arranged in the vertical direction. A servo motor 20 is installed on the top of the moving seat 4 10. The servo motor 20 fixes the moving seat 4 10 through bolts. The end of the servo motor 20 is connected to the moving seat 3 9 through a screw. The movement direction of the moving seat 4 10 is vertical movement. The servo motor 20 installed on the moving seat 4 10 rotates, so that the servo motor 20 drives the screw to rotate, thereby driving the moving seat 4 10 as a whole to rise and fall along the matching guide rail 21 of the moving seat 3 9. The end faces of the two moving seats 4 10 are both equipped with spindle heads The ends of the two spindle heads 11 are respectively provided with vertical grinding heads 12 and 13. The vertical grinding heads 12 and 13 are arranged opposite each other and symmetrically about the axis of the worktable magnetic table 5. By moving the two movable seats 3 9 closer or farther away from each other, the two spindle heads 11 can be moved closer or farther away from each other. At the same time, the spindle heads 11 of the movable seat 4 10 are moved in the vertical direction. The vertical grinding heads 12 and 13 in the two spindle heads 11 can grind the linear guide between them. The linear guide is ground on both sides by specially shaped grinding wheels, eliminating the need for multiple clamping and improving the machining accuracy of the linear guide.

[0031] See also Figure 4 and Figure 5 As shown, the servo motor 18 is installed at both ends of the second gantry 3, and the servo motor 18 is fixed to the second gantry 3 by bolts, and two sets of matching guide rails 19 are provided at the contact point between the second gantry 3 and the movable seat 3 9, and the matching guide rails 19 include relatively sliding slides and sliders, the slides are installed on the edge of the second gantry 3, and the sliders are installed on the back of the movable seat 3 9. The servo motor 18 drives the movable seat 3 9 to move along the matching guide rails 19, so that the slider of the movable seat 3 9 moves along the slide rails of the second gantry 3, so that the spindle head 2 11 rises and falls with the movable seat 4 10.

[0032] See also Figure 5 As shown, both ends of each threaded rod 24 are rotatably connected to the two fixed ends 22. When the threaded rod 24 rotates, the two ends of the threaded rod 24 are rotatably connected to the fixed ends 22. The moving block 23 is connected to the threaded rod 24 by a thread of the same specification, and the moving blocks 23 of the two sets of moving seats 3 9 approach or move away from each other. At this time, when the two servo motors 18 rotate at the same time, the two threaded rods 24 can be rotated, so that the vertical grinding heads 12 and 13 at the ends of the two spindle heads 2 11 are close to each other, ensuring that both sides of the linear guide are polished by the vertical grinding heads 12 and 13 at the same time, so that the shapes of the two sides of the linear guide are the same and the processing accuracy of the linear guide is high.

[0033] See also Figure 1 and Figure 3 As shown, a movable seat 1 6 and a movable seat 2 7 are installed at the upper end of the first gantry 2, and a horizontal drive motor shaft and a vertical drive motor shaft are installed between the movable seat 1 6 and the first gantry 2. The moving direction of the movable seat 1 6 is horizontal, and the moving direction of the movable seat 2 7 is vertical. A spindle head 1 8 is installed at the bottom end of the movable seat 2 7, and the grinding wheel of the spindle head 8 is arranged horizontally. The horizontal motor shaft at the movable seat 1 6 can be used to drive the movable seat 1 6 to move in the horizontal direction, and the vertical motor shaft at the movable seat 2 7 can be used to drive the movable seat 2 7 to rise and fall, so that the spindle head 1 8 is lifted and lowered along with the movable seat 2 7, so that the spindle head 1 8 is ground along the upper surface of the linear guide rail, and the vertical grinding head 1 12 and the vertical grinding head 2 13 can realize three-sided grinding of the linear guide rail.

[0034] See also Figure 2 As shown, the linear motor 14 is arranged between the machine tool base 1 and the workbench magnetic table 5, and the guide rail of the linear motor 14 is fixed to the top surface of the machine tool base 1, and the moving terminal of the linear motor 14 is fixed to the bottom end of the workbench magnetic table 5. When the linear motor 14 is working, the workbench magnetic table 5 moves along the base guide rail 4, so that the linear guide rail on the workbench magnetic table 5 can be moved and polished at the same time.

[0035] See also Figure 2and Figure 6 As shown, a stop block 15 and a limiting roller 16 are provided on the surface of the machine tool base 1 and at one end of the base guide rail 4. The limiting roller 16 is located on one side of the stop block 15. The cross-sectional shape of the stop block 15 is L-shaped. The stop block 15 is fixed to the machine tool base 1 by bolts, and the inclined surface of the stop block 15 is flush with the bottom end of the workbench magnetic table 5. The workbench magnetic table 5 can avoid contact between the workbench magnetic table 5 and the stop block 15 when the workbench magnetic table 5 moves back and forth. The upper end roller shaft of the limiting roller 16 is in contact with the end of the workbench magnetic table 5. When the workbench magnetic table 5 moves to the limit position, it can be limited by the limiting roller 16, thereby preventing the workbench magnetic table 5 from exceeding the limit position when the workbench magnetic table 5 is moved.

[0036] See also Figure 1 、 Figure 7 and Figure 8As shown, the bottom ends of the two spindle heads 11 are both equipped with two mutually rotating clamping plates 17 and 25, and the top of the clamping plate 17 is welded with a connecting ring 35, which is rotatably connected to the end face of the spindle head 11. The side wall of the connecting ring 35 is provided with a rotating groove adapted to the end face of the spindle head 11, and the end of the spindle head 11 is rotatably connected to the rotating groove of the connecting ring 35, so that the connecting ring 35 will not fall off when the end of the spindle head 11 rotates. At this time, the clamping plate 17 of the connecting ring 35 is welded to the top of the clamping plate 17. The connecting ring 35 is rotatably connected to the end face of the spindle head 11. 7 can rotate relative to the end of the spindle head 2 11, and the ends of the clamping plate 1 17 and the clamping plate 2 25 are respectively installed with a movable wheel 1 26 and a movable wheel 2 27. The movable wheel 1 26 and the movable wheel 2 27 can be used to clamp the linear guide rail, and the linear guide rail is clamped between the movable wheel 1 26 and the movable wheel 2 27. The mating surfaces of the clamping plate 1 17 and the clamping plate 2 25 are respectively provided with an arc-shaped reserved groove 2 32 and a reserved groove 1 30. A gear 34 is installed in the middle of the clamping plate 25 and inside the reserved groove 1 30. An inner wall of the reserved groove 2 32 is provided with a tooth 2 33, and an inner wall of the reserved groove 1 30 is provided with a tooth 1 31, and the tooth 1 31 and the tooth 2 33 are located on both sides of the gear 34, and the gear 34 is meshed with the tooth 1 31 and the tooth 2 33. The clamping plate 1 17 and the clamping plate 2 25 rotate in opposite directions. When the vertical grinding head 12 and the vertical grinding head 2 13 approach the linear guide rail, the clamping plate 17 and the clamping plate 2 25 located at the grinding head first contact the linear guide rail, thereby causing the clamping plate 17 and the clamping plate 2 25 to rotate relative to each other. Since a gear 34 is provided inside the clamping plate 25, when the clamping plate 1 17 and the clamping plate 2 25 rotate relative to each other, the gear 34 is engaged with the tooth 1 31 and the tooth 2 33 at the same time, so that the clamping plate 1 17 and the clamping plate 2 25 can rotate synchronously, so that the movable wheel 1 26 and the movable wheel 2 27 can be brought into contact with one side of the linear guide rail. Similarly, when the other grinding head approaches the linear guide rail at the same time, the two movable wheels 1 26 and the movable wheel 2 27 at this location move toward the linear guide rail, so that the four movable wheels clamp the two sides of the linear guide rail.

[0037] See also Figure 7 and Figure 8 As shown, two fixed plates 28 are welded to the bottom end face of each spindle head 11, and the clamping plate 1 17 and the clamping plate 2 25 are connected to the fixed plate 28 through the telescopic spring 29. When the clamping plate 17 and the clamping plate 2 25 are close to the linear guide rail, the two telescopic springs 29 can be used to press against the clamping plate 17 and the clamping plate 2 25 respectively, thereby ensuring that the clamping plate 17 and the clamping plate 2 25 can always be close to the workpiece of the linear guide rail.

[0038] When the present invention is in use, the machine base 1 of the grinder is integrally formed with 340 Meehanite cast iron. The machine base 1 made of Meehanite cast iron is cast in a mold pressure holding mode, and the pressure holding time exceeds half a month, which effectively eliminates the casting stress. The bottom end and column of the machine base 1 are infiltrated with finite elements to effectively maintain the support rigidity and offset most of the deformation disturbance. The first gantry 2 and the second gantry 3 are integrally cast, and the material is FC-300 Meehanite cast iron. The support adopts linear rails installed on both sides. The preliminarily processed linear guide rails are placed on the surface of the workbench magnetic table 5, and then the electromagnetic force of the workbench magnetic table 5 is used to process the linear guide rails. , so that the linear guide rail can be adsorbed on the surface of the workbench magnetic table 5. Since it is necessary to grind both sides and the top surface of the linear guide rail when grinding the linear guide rail so as to obtain a workpiece that meets the predetermined requirements, the specific operation is to start the equipment to rotate the spindle head 8, vertical grinding head 12 and vertical grinding head 2 13 of the grinding machine, move the moving seat 16 along the horizontal direction of the first gantry 2, and then move the moving seat 2 7 along the vertical direction of the moving seat 6, so that the position of the spindle head 8 can be adjusted so that the spindle head 8 moves to the top surface position of the linear guide rail, start the two servo motors 18 at both ends, and the servo motors 18 at both ends are turned on. The servo motor 18 drives the respective threaded rods 24 to rotate, thereby moving the moving block 23 on the back of the moving seat 3 9 to move, so that the two moving seats 3 9 are moved closer to or away from each other, and at the same time, the vertical grinding head 12 and the vertical grinding head 2 13 are raised and lowered, so that the ends of the two spindle heads 11 can be close to each other on the linear guide rail. At this time, the vertical grinding head 12 and the vertical grinding head 2 13 can be used to grind the linear guide rail. During this period, since the workbench magnetic table 5 moves along the base guide rail 4 on the machine tool base 1, the support rigidity is good. Under the action of the two vertical grinding heads 12 and the vertical grinding head 2 13, both sides of the linear guide rail can be ground. The vertical grinding head 12 and the vertical grinding head 2 13 are ground at the same time, which can improve the accuracy of both sides of the linear guide rail, and when the vertical grinding head 12 and the vertical grinding head 2 13 approach the middle, they can press against both sides of the linear guide rail through the clamping plate 17 and the clamping plate 2 25, so that when the workbench magnetic table 5 drives the linear guide rail, the movable wheel 1 26 and the movable wheel 2 27 can guide the linear guide rail. When the vertical grinding head 12 and the vertical grinding head 2 13 are grinding the workpiece, the four movable wheels can be used to clamp the linear guide rail to ensure the overall accuracy of the linear guide rail, and under the action of the telescopic spring 29 of the fixed plate 28, the four movable wheels can be pressed between the two vertical grinding heads.

[0039] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A linear guide rail grinding machine, comprising a machine base (1), a first gantry (2), a second gantry (3), a base guide rail (4) and a worktable magnetic table (5), wherein the base guide rail (4) is arranged on the top surface of the machine base (1), the worktable magnetic table (5) is arranged between the two base guide rails (4), a linear motor (14) is provided on the surface of the machine base (1), and the direction of the base guide rail (4) is the same as the moving direction of the worktable magnetic table (5), and the first gantry (2) and the second gantry (3) are installed in the middle of the machine base (1); characterized in that The first gantry (2) and the second gantry (3) are integrally cast and made of FC-300 Miehanna cast iron. Two groups of moving seats (9) are horizontally arranged in the middle of the upper end of the second gantry (3). Moving blocks (23) are arranged on the back of the two moving seats (9). The moving blocks (23) are fixed to the back of the moving seats (9). Threaded rods (24) are arranged at the intersection of the second gantry (3) and the two groups of moving seats (9). The threaded rods (24) pass through the inside of the moving blocks (23) on the back of the moving seats (9). A servo motor (18) is arranged at one end of the threaded rod (24) and near the edge of the second gantry (3). The output end of the servo motor (18) rotates synchronously with the linear motor (14). The moving seat (9) moves in the horizontal direction. The end faces of the two movable seats three (9) are both provided with movable seats four (10), and the contact surface between the movable seat four (10) and the movable seat three (9) is provided with a matching guide rail two (21) arranged in the vertical direction. The top of the movable seat four (10) is provided with a servo motor two (20), and the end of the servo motor two (20) is connected to the movable seat three (9) through a screw. The moving direction of the movable seat four (10) is vertical movement. The end faces of the two movable seats four (10) are both provided with a spindle head two (11), and the ends of the two spindle heads two (11) are respectively provided with a vertical grinding head one (12) and a vertical grinding head two (13). The vertical grinding head one (12) and the vertical grinding head two (13) are arranged relative to each other, and the vertical grinding head one (12) and the vertical grinding head two (13) are symmetrical about the axis of the workbench magnetic table (5); The bottom ends of the two spindle heads (11) are both provided with two mutually rotatable clamping plates (17) and clamping plates (25). A connecting ring (35) is welded to the top end of the clamping plate (17). The connecting ring (35) is rotatably connected to the end face of the spindle head (11). The ends of the clamping plate (17) and the ends of the clamping plate (25) are respectively provided with movable wheels (26) and movable wheels (27). The mating surfaces of the clamping plate (17) and the clamping plate (25) are respectively provided with arc-shaped reserved grooves (32) and reserved grooves (30). The middle of the clamping plate (25) is located inside the reserved groove (30). A gear (34) is installed, an inner wall of the reserved groove (32) is provided with a tooth (33), an inner wall of the reserved groove (30) is provided with a tooth (31), and the tooth (31) and the tooth (33) are located on both sides of the gear (34), the gear (34) is meshed with the tooth (31) and the tooth (33), the clamping plate (17) and the clamping plate (25) rotate in opposite directions, and when the clamping plate (17) and the clamping plate (25) rotate relative to each other, the gear (34) is meshed with the tooth (31) and the tooth (33) at the same time, so that the clamping plate (17) and the clamping plate (25) can rotate synchronously; Two fixing plates (28) are welded to the bottom end surface of each spindle head (11), and the clamping plate (17) and the clamping plate (25) are connected to the fixing plate (28) via a telescopic spring (29).

2. A linear guide rail grinding machine according to claim 1, characterized in that: The servo motor 1 (18) is installed at both ends of the second gantry (3), and two sets of matching guide rails 1 (19) are provided at the contact point between the second gantry (3) and the movable seat 3 (9). The matching guide rail 1 (19) includes a slide rail and a slider that slide relative to each other. The slide rail is installed at the edge of the second gantry (3), and the slider is installed at the back of the movable seat 3 (9).

3. The linear guide rail grinding machine according to claim 2, characterized in that: Both ends of each threaded rod (24) are rotatably connected to the two fixed ends (22), the moving block (23) and the threaded rod (24) are connected via threads of the same specification, and the moving blocks (23) of the two groups of moving seats (9) move closer to or farther away from each other.

4. The linear guide rail grinding machine according to claim 1, characterized in that: A movable seat 1 (6) and a movable seat 2 (7) are installed at the upper end of the first gantry (2), a horizontal driving motor shaft and a vertical driving motor shaft are installed between the movable seat 1 (6) and the first gantry (2), the movable seat 1 (6) moves in a horizontal direction, the movable seat 2 (7) moves in a vertical direction, and a spindle head 1 (8) is installed at the bottom end of the movable seat 2 (7), and the grinding wheel of the spindle head 1 (8) is arranged horizontally.

5. The linear guide rail grinding machine according to claim 4, characterized in that: The linear motor (14) is arranged between the machine tool base (1) and the workbench magnetic table (5), and the guide rail of the linear motor (14) is fixed to the top surface of the machine tool base (1), and the moving terminal of the linear motor (14) is fixed to the bottom end of the workbench magnetic table (5).

6. The linear guide rail grinding machine according to claim 5, characterized in that: A stop block (15) and a limiting roller (16) are provided on the surface of the machine tool base (1) and at one end of the base guide rail (4). The limiting roller (16) is located on one side of the stop block (15). The cross-section of the stop block (15) is L-shaped, and the inclined surface of the stop block (15) is flush with the bottom end of the workbench magnetic table (5). The upper end roller shaft of the limiting roller (16) contacts the end of the workbench magnetic table (5).

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