Monitoring device for straightness of machine tool

Abstract

The utility model relates to the technical field of machine tool straightness monitoring, in particular to a machine tool straightness monitoring device which comprises a machine tool body, a bottom plate and an L-shaped calibration plate, first electric telescopic rods are installed on the surface of the upper end of the bottom plate and close to the two sides, and L-shaped connecting plates are fixedly installed at one ends of the two first electric telescopic rods. The upper ends of the two L-shaped connecting plates are fixedly connected with a concentric-square-shaped frame, the interior of the concentric-square-shaped frame is rotationally connected with a reciprocating lead screw, the reciprocating lead screw is sleeved with a sliding block, and the upper end of the sliding block is fixedly connected with the L-shaped calibration plate. Distance monitoring is conducted on all the guide rails on the machine tool body, the monitoring work efficiency is effectively improved, the supporting effect on the concentric-square-shaped frame and the L-shaped calibration plate can be firmer and more stable through the supporting mechanism, and the situation that when the laser range finder moves subsequently, the device shakes, and the monitoring accuracy is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool straightness monitoring, in particular to a monitoring device for the straightness of a machine tool. Background Technique

[0002] When monitoring the straightness of a machine tool, it usually refers to the monitoring of the straightness of the guide rail on the machine tool. The straightness of the guide rail is the basic accuracy of various machine tool accuracies. The straightness of the guide rail has a direct impact on multiple machine tool accuracies. There are many and relatively complex detection instruments and detection methods, and different detection instruments and different detection methods should be adopted according to different situations.

[0003] When monitoring the straightness of a machine tool, a ranging instrument is often installed to measure the distance between the guide rail and the calibration plate where it is installed, so as to monitor the straightness. However, the position of the ranging instrument is generally fixed. When it is necessary to monitor the straightness of multiple groups of guide rails on the machine tool, it needs to be disassembled and then installed near the guide rail to be monitored, which is rather troublesome and affects the efficiency of the monitoring work. Moreover, the stability of the monitoring device is insufficient and it is easy to shake, resulting in affecting the accuracy of the monitoring. For this reason, we propose a monitoring device for the straightness of a machine tool. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a monitoring device for the straightness of a machine tool to solve the above deficiencies in the prior art.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A monitoring device for the straightness of a machine tool, including a machine tool main body, a bottom plate and an L-shaped calibration plate. Electric telescopic rods one are installed at both sides of the upper surface of the bottom plate. L-shaped connecting plates are fixedly installed at one ends of the two electric telescopic rods one. A return frame is fixedly connected to the upper ends of the two L-shaped connecting plates. A reciprocating lead screw is rotatably connected inside the return frame. A slider is sleeved outside the reciprocating lead screw, and the upper end of the slider is fixedly connected to the L-shaped calibration plate. A chute is penetrated and opened on the upper surface of the L-shaped calibration plate. A slide bar is fixedly installed inside the chute. A movable block is sleeved outside the slide bar. An L-shaped support plate is fixedly connected to the bottom surface of the movable block. An electric telescopic rod two is installed on the bottom surface of the L-shaped support plate. A laser rangefinder is installed at one end of the electric telescopic rod two. A control panel is installed on the outer side wall of the L-shaped calibration plate. Two support mechanisms are arranged on the outer side walls of the two L-shaped connecting plates. Guide rails are fixedly installed at both sides of the upper surface of the machine tool main body. A counterweight block is fixedly installed at the middle position of the upper surface of the bottom plate.

[0006] As a further description of the above technical solution:

[0007] A display screen is installed at a position near the upper part of the outer wall of the control panel, a control module is installed at a position near the lower part of the outer wall of the control panel, the output end of the laser rangefinder is electrically connected to the input end of the control module, and the output end of the control module is electrically connected to the output end of the display screen.

[0008] As a further description of the above technical solution:

[0009] A motor is installed on the outer wall of the loop-shaped frame, the output end of the motor is connected to one end of the reciprocating lead screw, long slots are opened at positions near both sides on the upper surface of the L-shaped calibration plate, and a mounting shell is fixedly connected to the upper surface of the movable block.

[0010] As a further description of the above technical solution:

[0011] Rotating wheels are rotatably connected to both outer walls of the mounting shell, and the rotating wheels are fitted with the long slots. Motors are installed on both inner walls of the mounting shell, and the output ends of the two groups of motors are respectively connected to the rotating wheels.

[0012] As a further description of the above technical solution:

[0013] The support mechanism includes a support plate, the support plate is arranged above the bottom plate, an adjustment plate is inserted at one end of the support plate, a plurality of groups of fixing screw holes are opened on the outer wall of the adjustment plate, a fixing bolt is inserted at one end of the outer wall of the support plate close to the adjustment plate, and the fixing bolt is fitted with the fixing screw holes.

[0014] As a further description of the above technical solution:

[0015] A screw rod is inserted at one end of the outer wall of the adjustment plate away from the support plate, a nut is sleeved on the outer part of the screw rod, a thread groove is opened on the outer wall of the L-shaped connecting plate, and the thread groove is fitted with the screw rod.

[0016] As a further description of the above technical solution:

[0017] One end of the support plate away from the adjustment plate is hinged with a fixing plate, a fixing nail is inserted on the upper surface of the fixing plate, a fixing hole is opened on the upper surface of the bottom plate and at a position directly below the fixing nail, and the fixing hole is fitted with the fixing nail.

[0018] Effective effect:

[0019] The utility model provides a monitoring device for the straightness of a machine tool. It has the following beneficial effects:

[0020] In the monitoring device for the straightness of a machine tool, the electric telescopic rod II drives the laser rangefinder to move to a position close to one side of a set of guide rails. Then, the motor cooperates with the rotating wheel to drive the laser rangefinder to move on one side of the guide rails on the main body of the machine tool, and the distance between it and the guide rails can be measured, so as to realize the monitoring of the straightness of the guide rails. Moreover, the motor installed on the loop frame drives the reciprocating lead screw to rotate, which can drive the slider to move inside the loop frame, thus driving the L-shaped calibration plate to move on the main body of the machine tool, driving the laser rangefinder to move to a position close to the other set of guide rails. Then, similarly, the electric telescopic rod II can drive the laser rangefinder to move to a position close to the other set of guide rails, and the distance measurement can be carried out similarly to realize the straightness monitoring of the other set of guide rails. Through the above operations, the position of the laser rangefinder can be adjusted automatically and conveniently, and the distance of each guide rail on the main body of the machine tool can be monitored, effectively improving the efficiency of the monitoring work.

[0021] In the monitoring device for the straightness of a machine tool, by moving the support plate along the outside of the adjusting plate, the bottom surface of the fixing plate is driven to closely adhere to the upper surface of the bottom plate, and the position between the support plate and the adjusting plate is fixed by the fixing bolt and the fixing screw hole. Then, the position between one end of the support plate and the bottom plate is fixed by the fixing nail and the fixing hole, and the position between the adjusting plate and the L-shaped connecting plate is squeezed and fixed by the nut and the screw rod. Similarly, the same operations can be carried out on the other three sets of support mechanisms, which can well support and reinforce the L-shaped connecting plate, and cooperate with the weight of the counterweight block to make the support effect on the loop frame and the L-shaped calibration plate more firm, avoiding the device from shaking during the subsequent movement of the laser rangefinder and affecting the accuracy of the monitoring. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 It is a schematic diagram of the partial structure of the present utility model;

[0024] Figure 3 It is a cross-sectional view of the installation shell in the present utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the bottom plate, the counterweight block and the support mechanism of the present utility model;

[0026] Figure 5 It is a schematic diagram of the structure of the support mechanism in the present utility model.

[0027] Description of the Reference Numerals:

[0028] 1. Machine tool main body; 2. Guide rail; 3. Base plate; 4. Counterweight; 5. Loop frame; 6. Reciprocating lead screw; 7. L-shaped calibration plate; 8. Control panel; 9. Display screen; 10. Control module; 11. Slide groove; 12. Slide bar; 13. Movable block; 14. Installation shell; 15. Runner; 16. Long groove; 17. Laser rangefinder; 18. Slide block; 19. Support plate; 20. Adjusting plate; 21. L-shaped connecting plate; 22. Screw; 23. Fixed bolt; 24. Fixed plate; 25. Fixed nail; 26. Electric telescopic rod one; 27. Support mechanism; 28. Electric telescopic rod two; 29. L-shaped support plate. Specific implementation manner

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-5 , a monitoring device for the straightness of a machine tool. Please refer to Figures 1-5 , a monitoring device for the straightness of a machine tool, including a machine tool main body 1, a base plate 3 and an L-shaped calibration plate 7. Electric telescopic rods one 26 are installed on both sides of the upper surface of the base plate 3 near the two sides. One ends of the two electric telescopic rods one 26 are fixedly installed with L-shaped connecting plates 21. The upper ends of the two L-shaped connecting plates 21 are fixedly connected with a loop frame 5. A reciprocating lead screw 6 is rotatably connected inside the loop frame 5. A slide block 18 is sleeved outside the reciprocating lead screw 6, and the upper end of the slide block 18 is fixedly connected with the L-shaped calibration plate 7. A slide groove 11 is penetrated through the upper surface of the L-shaped calibration plate 7. A slide bar 12 is fixedly installed inside the slide groove 11. A movable block 13 is sleeved outside the slide bar 12. The bottom surface of the movable block 13 is fixedly connected with an L-shaped support plate 29. An electric telescopic rod two 28 is installed on the bottom surface of the L-shaped support plate 29. A laser rangefinder 17 is installed at one end of the electric telescopic rod two 28. A control panel 8 is installed on the outer side wall of the L-shaped calibration plate 7. Two support mechanisms 27 are arranged on the outer side walls of the two L-shaped connecting plates 21. Guide rails 2 are fixedly installed on both sides of the upper surface of the machine tool main body 1 near the two sides. A counterweight 4 is fixedly installed at the middle position of the upper surface of the base plate 3.

[0031] A display screen 9 is installed at a position near the upper part of the outer wall of the control panel 8, and a control module 10 is installed at a position near the lower part of the outer wall of the control panel 8. The output end of the laser rangefinder 17 is electrically connected to the input end of the control module 10, and the output end of the control module 10 is electrically connected to the output end of the display screen 9. The data measured by the laser rangefinder 17 are all transmitted to the control module 10, and then transmitted by the control module 10 to the display screen 9 installed on the control panel 8, and the measured data are displayed by the display screen 9 for the staff to view.

[0032] A motor is installed on the outer wall of the loop-shaped frame 5. The output end of the motor is connected to one end of the reciprocating lead screw 6. Long slots 16 are respectively formed on the upper surface of the L-shaped calibration plate 7 near both sides. The upper surface of the movable block 13 is fixedly connected with a mounting shell 14. Rotating wheels 15 are rotatably connected to both outer walls of the mounting shell 14, and the rotating wheels 15 are fitted with the long slots 16. Motors are installed on both inner walls of the mounting shell 14. The output ends of the two groups of motors are respectively connected to the rotating wheels 15. The two groups of rotating wheels 15 are driven to rotate by the motors installed in the mounting shell 14, so that the rotating wheels 15 move along the long slots 16, driving the movable block 13 to move along the slide bar 12 installed in the slide groove 11, thereby driving the L-shaped support plate 29 and the second electric telescopic rod 28 to move with the movable block 13. The rotation of the reciprocating lead screw 6 can drive the slider 18 to move left and right along it, facilitating the adjustment of the position of the laser rangefinder 17.

[0033] During use, first, the electric telescopic rod II 28 drives the laser rangefinder 17 to move to a position close to one side of the guide rail 2. Then, the motor installed in the mounting shell 14 drives the two groups of runners 15 to rotate, causing the runners 15 to move along the long groove 16, driving the movable block 13 to move along the slide rod 12 installed in the chute 11, thereby driving the L-shaped support plate 29 and the electric telescopic rod II 28 to move following the movable block 13. This can drive the laser rangefinder 17 to move on one side of the guide rail 2 on the machine tool main body 1, and the distance between it and the guide rail 2 can be measured, thus realizing the monitoring of the straightness of the guide rail 2. Moreover, the data measured by the laser rangefinder 17 are all transmitted to the control module 10, and then transmitted by the control module 10 to the display screen 9 installed on the control panel 8, and the measurement data are displayed by the display screen 9 for the staff to view. Also, by driving the electric telescopic rod II 28, the laser rangefinder 17 can be lifted. Then, by driving the reciprocating lead screw 6 to rotate with the motor installed on the return frame 5, the slider 18 can be driven to move inside the return frame 5, thereby driving the L-shaped calibration plate 7 to move on the machine tool main body 1, driving the laser rangefinder 17 to move to a position close to the other group of guide rails 2. Then, similarly, by driving the electric telescopic rod II 28, the laser rangefinder 17 can be moved to a position close to one side of the other group of guide rails 2. Similarly, by the cooperation of the motor and the runners 15, the laser rangefinder 17 can be driven to move along one side of this group of guide rails 2 for distance measurement, realizing the monitoring of the straightness of the other group of guide rails 2. Through the above operations, the position of the laser rangefinder 17 can be adjusted automatically and conveniently, and the distance of each guide rail 2 on the machine tool main body 1 can be monitored, effectively improving the efficiency of the monitoring work;

[0034] Among them, the model of the laser rangefinder 17 is XR1200.

[0035] Please refer to Figure 5 , the support mechanism 27 includes a support plate 19. The support plate 19 is arranged above the bottom plate 3. One end of the support plate 19 is inserted with an adjusting plate 20. A plurality of groups of fixing screw holes are formed on the outer side wall of the adjusting plate 20. One end of the support plate 19 close to the adjusting plate 20 is inserted with a fixing bolt 23, and the fixing bolt 23 is fitted with the fixing screw holes. One end of the adjusting plate 20 far from the support plate 19 is inserted with a screw rod 22. A nut is sleeved on the outer part of the screw rod 22. A screw groove is formed on the outer side wall of the L-shaped connecting plate 21, and the screw groove is fitted with the screw rod 22. One end of the screw rod 22 is fixed to the L-shaped connecting plate 21 through the screw groove. When the nut is tightened on the screw rod 22, the position between one end of the adjusting plate 20 and the L-shaped connecting plate 21 can be fixed, and one end of the adjusting plate 20 can also rotate with the L-shaped connecting plate 21 through the screw rod 22.

[0036] One end of the support plate 19 away from the adjusting plate 20 is hinged to a fixing plate 24. A fixing nail 25 is inserted into the upper surface of the fixing plate 24. A fixing hole is formed in the upper surface of the bottom plate 3 and at a position directly below the fixing nail 25. The fixing hole is fitted with the fixing nail 25. Inserting one end of the fixing nail 25 through the fixing plate 24 and into the fixing hole can fix the position between one end of the support plate 19 and the bottom plate 3.

[0037] Specifically, when using this monitoring device to conduct linear monitoring on the machine tool, the bottom plate 3 can be placed on the ground near one side of the machine tool main body 1. Then, the two groups of electric telescopic rods 26 drive the L-shaped connecting plate 21 to move upward. Adjust the height of the L-shaped calibration plate 7 according to the machine tool main body 1 with different heights, so that this monitoring device can adapt to machine tool main bodies 1 with various heights, and make the L-shaped calibration plate 7 flush with one side of the machine tool main body 1. Then move the support plate 19 along the outside of the adjusting plate 20, drive the bottom surface of the fixing plate 24 installed at one end of it to closely adhere to the upper surface of the bottom plate 3, and insert one end of the fixing bolt 23 through the support plate 19 and rotate it into the corresponding fixing screw hole formed in the adjusting plate 20 to fix the position between the support plate 19 and the adjusting plate 20. At this time, insert one end of the fixing nail 25 through the fixing plate 24 and into the fixing hole, which can fix the position between one end of the support plate 19 and the bottom plate 3. Then tighten the nut along the screw rod 22 to squeeze and fix the position between the adjusting plate 20 and the L-shaped connecting plate 21. Similarly, the same operation can be performed on the other three groups of support mechanisms 27, which can well support and reinforce the L-shaped connecting plate 21, and cooperate with the weight of the counterweight 4, thereby making the support effect on the return frame 5 and the L-shaped calibration plate 7 more firm, and avoiding the device from shaking during the subsequent movement of the laser rangefinder 17, which affects the accuracy of monitoring.

[0038] The above description enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for monitoring the straightness of a machine tool, characterized in that: The machine tool comprises a machine tool body (1), a base plate (3) and an L-shaped calibration plate (7), wherein an electric telescopic rod (26) is installed near both sides of the upper end surface of the base plate (3), and an L-shaped connecting plate (21) is fixedly installed at one end of two groups of the electric telescopic rods (26), and the upper ends of the two groups of the L-shaped connecting plates (21) are fixedly connected to a circular frame (5), and a reciprocating screw (6) is rotatably connected inside the circular frame (5), and a slider (18) is sleeved on the outside of the reciprocating screw (6), and the upper end of the slider (18) is fixedly connected to the L-shaped calibration plate (7), and a slide groove (11) is opened through the upper end surface of the L-shaped calibration plate (7), and the slide groove (11) is fixed inside. A slide bar (12) is installed, and a movable block (13) is sleeved on the outside of the slide bar (12). The bottom surface of the movable block (13) is fixedly connected to an L-shaped support plate (29). The bottom surface of the L-shaped support plate (29) is installed with an electric telescopic rod (28). A laser rangefinder (17) is installed at one end of the electric telescopic rod (28). A control panel (8) is installed on the outer wall of the L-shaped calibration plate (7). Two groups of support mechanisms (27) are provided on the outer walls of the two groups of L-shaped connecting plates (21). Guide rails (2) are fixedly installed on the upper surface of the machine tool body (1) near both sides, and a counterweight block (4) is fixedly installed on the upper surface of the base plate (3) near the middle.

2. A machine tool straightness monitoring device according to claim 1, characterized in that: A display screen (9) is installed near the upper portion of the outer wall of the control panel (8), a control module (10) is installed near the lower portion of the outer wall of the control panel (8), an output end of the laser rangefinder (17) is electrically connected to an input end of the control module (10), and an output end of the control module (10) is electrically connected to an output end of the display screen (9).

3. A machine tool straightness monitoring device according to claim 2, characterized in that: A motor is installed on the outer wall of the circular frame (5), and the output end of the motor is connected to one end of the reciprocating screw (6). Long grooves (16) are provided on the upper surface of the L-shaped calibration plate (7) near both sides, and a mounting shell (14) is fixedly connected to the upper surface of the movable block (13).

4. A machine tool straightness monitoring device according to claim 3, characterized in that: Both outer side walls of the installation shell (14) are rotatably connected with a rotating wheel (15), and the rotating wheel (15) is matched with the long slot (16). Both inner side walls of the installation shell (14) are equipped with a motor, and two sets of motor output ends are respectively connected to the rotating wheel (15).

5. The device for monitoring the straightness of a machine tool according to claim 1, characterized in that: The support mechanism (27) comprises a support plate (19), the support plate (19) being arranged above the bottom plate (3), an adjustment plate (20) being inserted at one end of the support plate (19), a plurality of groups of fixing screw holes being opened on the outer wall of the adjustment plate (20), a fixing bolt (23) being inserted at one end of the outer wall of the support plate (19) close to the adjustment plate (20), and the fixing bolt (23) being fitted in the fixing screw hole.

6. A machine tool straightness monitoring device according to claim 5, characterized in that: A screw rod (22) is inserted into the end of the outer wall of the adjustment plate (20) away from the support plate (19), a nut is sleeved on the outside of the screw rod (22), and a screw groove is opened on the outer wall of the L-shaped connecting plate (21), and the screw groove fits with the screw rod (22).

7. A machine tool straightness monitoring device according to claim 6, characterized in that: The support plate (19) is hingedly connected to a fixing plate (24) at one end away from the adjustment plate (20); a fixing nail (25) is inserted into the upper surface of the fixing plate (24); a fixing hole is opened on the upper surface of the bottom plate (3) and located directly below the fixing nail (25); and the fixing hole fits with the fixing nail (25).

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