Laser machine tool body guide rail installation device and straightening method thereof

Abstract

The present invention discloses a guide rail installation device for a laser machine tool body in the field of machine tool equipment installation technology, comprising a machine tool body, a guide rail provided on the guide rail installation plane of the machine tool body, and a guide rail straightness adjustment device provided on the side plane of the body, comprising a steel belt tensioning mechanism, a steel belt position adjustment mechanism, and a steel belt clamped between the steel belt tensioning mechanism and the steel belt position adjustment mechanism by a steel belt clamping mechanism, respectively arranged at both ends of the guide rail; a guide rail straightness detection and calibration mechanism is connected to the guide rail; in the present invention, a steel belt is used to replace the marble parallel ruler in the prior art, thereby avoiding the use of bulky marble and reducing multiple repeated calibrations caused by repeated transportation of the marble parallel ruler, saving time and cost, and reducing the production and manufacturing cost of the machine tool; while ensuring the straightening accuracy, less time and cost can be spent, thereby improving the straightening efficiency, and being suitable for use in a high-precision machine tool guide rail straightening device with an increased major axis length.

Description

Technical Field

[0001] The present invention relates to the technical field of machine tool equipment installation, and in particular to a laser machine tool body guide rail installation device and a straightening method thereof. Background Art

[0002] With the rapid development of laser machine tools, the processing range of the long axis of the machine tool has gradually increased from the original 3 meters to 4 meters, 6 meters, 8 meters and 12 meters and even larger specifications. The length of the guide rails used for the long axis has also increased from 4 meters to 5 meters, 8 meters, 10 meters, 14 meters and other lengths. This puts higher requirements on the straightness of the long axis guide rails. In the existing technology, the straightness of the long axis guide rails is usually adjusted using a marble straightedge. As the length of the guide rail changes, it is necessary to purchase straightedges of different lengths, which is costly. In addition, marble is large in size and heavy in weight, and is easily bumped and broken during transportation. The method of using straightedges to splice during the adjustment process is not only time-consuming and labor-intensive, but also cannot guarantee the accuracy of the machine tool.

[0003] A high-precision guide rail straightness calibration structure and method thereof are published in the Chinese Patent Database. Its announcement number is: CN107387556A, and the announcement date is: November 24, 2017. It includes a base, a marble parallel ruler, a guide rail, a slider, a wedge block, a tightening block, an adjusting screw and a fixing screw. The marble parallel ruler is installed on one side of the base. The base is provided with a mounting slot and an adjusting slot connected to the mounting slot. The guide rail is locked in the mounting slot by a fixing screw. The guide rail is tightly attached to the side wall of the mounting slot. The slider is slidably arranged on the guide rail. A micrometer for calibrating the guide rail straightness is placed on the top of the slider. The wedge block and the tightening block are both installed in the adjusting slot. One end face of the tightening block presses against the guide rail, and the other end face of the tightening block presses against one end face of the wedge block, and the other end face of the wedge block presses against the side wall of the adjusting slot. This calibration structure does not have high requirements for the edge surface of the workpiece, and the guide rail straightness can be expressed by data. The guide rail straightness can be adjusted within the range of 0.002 mm, which is suitable for machine tools with high precision requirements; however, when using this calibration structure, multiple wedges and tightening blocks matching the wedges are set. When adjusting the linear guide rails at different corresponding points, it is necessary to adjust the tightness of the entire section of the screws to make the tightening block rise or fall. During use, the tightness of the screws will become loose due to vibration or collision of the machine tool processing, which will reduce the reference accuracy of the adjustment and thus reduce the reliability of the calibration accuracy; and when the straightness of the marble parallel ruler deviates, it is necessary to use a rubber hammer to knock on the side of the marble parallel ruler, which is highly dependent on manual labor, cumbersome operation, low calibration efficiency and large calibration error.

[0004] The Chinese patent database also published a device for precisely straightening linear guides, with the announcement number CN208374674U and the announcement date January 15, 2019. The device includes a base, a linear guide, a slider, a marble straightedge, a micrometer and a guide rail straightener. The marble straightedge is arranged in the middle groove of the base, and the upper surface of the base is provided with a guide rail mounting surface. The linear guide is fixed to the guide rail mounting surface by bolts, the slider is slidably connected to the linear guide, and the micrometer is connected to the top of the slider; the guide rail straightener includes an eccentric shaft bolt and a top block, one side of the top block abuts against the outer side of the linear guide, and the top block is connected to the base by an eccentric shaft bolt; this device solves the problems of reduced installation accuracy of the linear guide, increased blockage of each axis during movement, and poor movement, improves the long-term accuracy of each operating axis of the machine tool, and meets the needs of high-speed and high-precision CNC machine tools. The device uses multiple guide rail straighteners set on the left and right sides of the marble straight ruler, with the marble straight ruler as a unified benchmark. Marble is hard and is easily affected by machine vibration during daily use of the machine tool. It is prone to wear and tear, which causes deviations and affects the straightening accuracy. In addition, the cost of marble is relatively high. When the length of the long axis of the machine tool increases, the production cost of the machine tool increases. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects in the prior art and provide a laser machine tool body guide rail installation device and its straightening method, which does not require the use of a bulky marble straight ruler, improves the linear accuracy of the machine tool guide rail, improves the adjustment efficiency of the guide rail straightness, saves time and labor, reduces the production and manufacturing costs of the machine tool, and improves the market competitiveness of the machine tool.

[0006] The object of the present invention is achieved as follows: A laser machine tool body guide rail installation device includes a laser machine tool body, a guide rail is provided on the guide rail installation plane of the laser machine tool body, and a guide rail straightness adjustment device is provided on the side plane of the body perpendicular to the guide rail installation plane, including a steel belt tensioning mechanism, a steel belt position adjustment mechanism and a steel belt clamped between the steel belt tensioning mechanism and the steel belt position adjustment mechanism respectively arranged at both ends of the guide rail, a guide rail straightness detection and calibration mechanism is connected to the guide rail through a guide rail slider; the steel belt clamping mechanism includes a steel belt fixing base plate and a steel belt fixing cover plate connected by fastening screws, a steel belt clamping plate is connected to the installation groove of the steel belt fixing cover plate, the two ends of the steel belt are respectively clamped on the steel belt clamping plate, and the fastening screws are tightened to clamp the steel belt clamping plate to fix the steel belt.

[0007] The cam is fixedly mounted on the support frame of the vehicle body, wherein the cam is secured to the support frame by a secure coupling to the support frame. The cam is secured to the support frame by a secure coupling to the support frame.

[0008] A first steel belt support rotating shaft is also provided on the fixed plate, and a first steel belt limiting plate is connected to the top of the first steel belt support rotating shaft through a first shoulder screw. The bent end surface of the first steel belt limiting plate is in contact with the steel belt, and the sliding plate is connected to the steel belt fixed bottom plate through a third positioning pin.

[0009] Furthermore, the steel belt position adjustment mechanism includes a second connecting plate fixedly connected to the side plane of the fuselage, the second connecting plate is fixedly connected to the second fixing plate by screws, the lower plane of the second fixing plate is connected to an adjusting plate by a positioning screw, the spring tightening screw is screwed into the adjusting plate and locked by a nut, a pressure plate is connected to the second side plane of the fixing plate perpendicular to the lower plane of the second fixing plate, the spring support screw is screwed into the pressure plate and locked by a nut, and a compression spring is provided between the two nuts; a second threaded shaft is provided on the adjusting plate, the second adjusting screw passes through the strip groove of the pressure plate and is screwed into the threaded hole of the second threaded shaft, thereby realizing a movably connection with the adjusting plate;

[0010] A second steel belt support rotating shaft is also provided on the fixed plate 2, the lower end of the second steel belt support rotating shaft passes through the fixed plate 2 and is connected to the adjusting plate, the upper end of the second steel belt support rotating shaft is connected to the second steel belt limiting plate through a second shoulder screw, the bent end surface of the second steel belt limiting plate is abutted against the steel belt, and a connecting column is connected to the fixed plate 2 through a third shoulder screw, and a fourth positioning pin passes through the connecting column and is connected to the steel belt fixed bottom plate and the steel belt fixed cover plate.

[0011] Furthermore, the guide rail straightness detection and calibration mechanism includes a slider mounting plate slidably connected to the guide rail via the guide rail slider, the slider mounting plate is relatively provided with two rack limit plates, a toothed block is provided between the two rack limit plates, the side surface of the toothed block is screwed to one end of the connecting screw, the connecting block is plugged into the connecting screw, and the other end of the connecting screw is connected to the knob by a screw; a slide is connected to the top of the connecting block by screws, and a cover plate is provided above the slide, the cover plate and the slide are fixedly connected by screws and then installed in the groove on the upper surface of the toothed block, and the height of the slide is consistent with the depth of the groove on the upper surface of the toothed block; the two rack limit plates The upper surface of the positioning plate is symmetrically provided with mounting holes, which are screwed into the tightening nuts with screws and then installed into the mounting holes of the rack limit plate. The cover plate and the skateboard are tightened by rotating the tightening nuts downward; a sensor mounting plate is vertically connected to the side end face of the skateboard, and a distance detection sensor is provided at the lower end of the sensor mounting plate, and the distance detection sensor is abutted against the steel belt; the mounting shaft of the detection switch is inserted into the circular hole on one side of the cover plate, and the locking screw is screwed into the side of the cover plate to lock and fix the mounting shaft. A Bluetooth transmission display is installed on the side of the cover plate opposite to the mounting shaft through a clamping plate, and the detection switch and the Bluetooth transmission display, as well as the distance detection sensor and the Bluetooth transmission display are respectively connected through cables.

[0012] Furthermore, the guide rail is provided with a plurality of mounting circular holes, and conical positioning screw 1 and conical positioning screw 2 are respectively screwed into the first mounting circular hole at both ends of the guide rail to pre-tighten and position the guide rail, and mounting screws are screwed into the remaining mounting circular holes to install the guide rail.

[0013] The present invention also discloses a method for installing and straightening the guide rails of a laser machine tool body, comprising the following steps:

[0014] Step 1. Move the guide rail straightness detection and calibration mechanism through the slider mounting plate to one end of the guide rail close to the installation of the steel belt tensioning mechanism, close to the tapered positioning screw 1, adjust the distance between the detection switch and the upper plane of the guide rail to 1 mm, tighten the locking screw after adjustment to fix the detection switch on the guide rail straightness detection and calibration mechanism, then adjust the relative position of the tooth block and the rack limit plate, and rotate the knob to move the slide plate in the groove on the upper surface of the tooth block, so as to adjust the distance from the distance detection sensor to the steel belt between 0.4 mm and 0.6 mm. The measured distance of the distance detection sensor is transmitted to the Bluetooth transmission display and displayed, and this value is recorded; move the guide rail straightness detection and calibration mechanism through the slider mounting plate to the other end of the guide rail, close to the tapered positioning screw 2, and adjust the position of the steel belt by adjusting the second adjusting screw so that the value displayed on the Bluetooth transmission display is less than 0.002 mm from the aforementioned recorded value. Click the "Return to Zero" button on the Bluetooth transmission display to make the displayed value 0.

[0015] Step 2. Click the measurement button on the Bluetooth transmission display to turn on the Bluetooth transmission. Adjust the guide rail. The slider mounting plate moves within the full length of the guide rail. The measurement reading of the distance detection sensor displayed on the Bluetooth transmission display is less than or equal to 0.01 mm. After the guide rail is adjusted, use the guide rail mounting screws to replace the conical positioning screw 1 and the conical positioning screw 2, and tighten them with a torque wrench with a torque of 36 Nm. Check the straightness of the guide rail. Readjust it if the measurement reading is greater than 0.01 mm. Turn on the computer and connect the computer to the Bluetooth transmission display via Bluetooth. The slider mounting plate drives the guide rail straightness detection and calibration mechanism to move from one end of the guide rail to the other end. When the detection switch detects the mounting hole, it automatically transmits data to the computer. After the measurement data is transmitted and saved, the guide rail straightness adjustment is completed.

[0016] When the present invention is working, a steel belt tensioning mechanism and a steel belt position adjustment mechanism are arranged on the laser machine tool body, and the steel belt clamping mechanism clamps the steel belt between the steel belt tensioning mechanism and the steel belt position adjustment mechanism, and a slidable guide rail straightness detection and calibration mechanism is arranged on the guide rail, so that the distance detection sensor on the guide rail straightness calibration mechanism maintains a certain distance from the steel belt, and the position and tension of the steel belt are adjusted by the steel belt tensioning mechanism and the steel belt position adjustment mechanism to keep it parallel to the two ends of the fuselage guide rail, and serve as the straightening reference for the guide rail straightness. During the measurement, the guide rail straightness detection and calibration mechanism is moved within the full length of the guide rail, and the distance between the distance and the straightening reference steel belt within the full length of the guide rail is measured, and the measured data is transmitted to the computer end, and the distance values between each distance measuring point on the guide rail and the steel belt are observed. If the difference exceeds the value, the guide rail is adjusted, thereby realizing the measurement and calibration of the guide rail straightness.

[0017] Compared with the prior art, the present invention has the following advantages: first, the use of steel strips to replace the marble parallel rulers in the prior art avoids the use of bulky marble as a guide rail straightening reference, thereby reducing the production and manufacturing costs of machine tools; second, when the processing range of the machine tool changes, the straightness of the machine tool guide rail can be adjusted by selecting a steel strip of appropriate length according to the length of the guide rail. Compared with the prior art method of replacing bulky marble straight rulers or using multiple marble sections for splicing, the present invention is convenient and quick to use, reduces the difficulty of adjustment, and can save time and money while ensuring the straightness of the guide rail, thereby improving the straightening efficiency. rate; third, the steel strip is easy to organize and store in the daily production and maintenance of the processing machine tool, and is less affected by the vibration, wear and tear of the machine tool, thereby reducing the impact on the guide rail straightening benchmark during straightening; fourth, during the guide rail straightening process, the measuring mechanism is connected to the computer, and the measured data is continuously transmitted to the computer terminal in real time, which is convenient for recording, and the position of the guide rail at the corresponding point can be adjusted in time, saving adjustment time and improving efficiency. It is suitable for use in the guide rail straightening device of high-precision machine tools; fifth, the straightening method of the present invention can control the guide rail straightness straightening error within 0.002 mm, and the straightening accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the steel belt tensioning mechanism in the present invention.

[0020] Figure 3 It is a top view of the steel belt tensioning mechanism in the present invention.

[0021] Figure 4 for Figure 3 Section view at AA.

[0022] Figure 5 The structure diagram of the steel belt position adjustment mechanism in the present invention is as follows Figure 1 .

[0023] Figure 6 The structure diagram of the steel belt position adjustment mechanism in the present invention is as follows Figure 2 .

[0024] Figure 7 It is a top view of the steel strip position adjustment mechanism in the present invention.

[0025] Figure 8 for Figure 7 Sectional view at the middle BB.

[0026] Figure 9 The structure diagram of the guide rail straightness detection and calibration mechanism in the present invention is shown in FIG. Figure 1 .

[0027] Figure 10 The structure diagram of the guide rail straightness detection and calibration mechanism in the present invention is shown in FIG. Figure 2 .

[0028] Among them, 1 machine tool body, 2 guide rail, 3 steel belt tensioning mechanism, 4 steel belt position adjustment mechanism, 5 steel belt, 6 guide rail straightness detection and calibration mechanism, 7 steel belt fixing base plate, 8 steel belt fixing cover plate, 9 steel belt clamping plate, 10 fastening screws;

[0029] 11 Connecting plate 1, 12 Fixed plate 1, 13 Guide plate, 14 First positioning pin, 15 Y-type tensioning plate, 16 Sliding plate, 17 Second positioning pin, 18 First threaded shaft, 19 Limit screw, 20 Washer, 21 Tensioning seat, 22 First adjusting screw, 23 First steel belt support shaft, 24 First shoulder screw, 25 First steel belt limiting plate, 26 Third positioning pin;

[0030] 27 connecting plate 2, 28 fixing plate 2, 29 adjusting plate, 30 positioning screw, 31 spring tightening screw, 32 pressure plate, 33 spring support screw, 34 compression spring, 35 second threaded shaft, 36 second adjusting screw, 37 second steel belt support shaft, 38 second shoulder screw, 39 second steel belt limiting plate, 40 third shoulder screw, 41 connecting column;

[0031] 42 guide rail slider, 43 slider mounting plate, 44 rack limit plate, 45 toothed block, 46 connecting screw, 47 connecting block, 48 knob, 49 slide plate, 50 cover plate, 51 tightening nut, 52 sensor mounting plate, 53 distance detection sensor, 54 detection switch, 55 locking screw, 56 clamping plate, 57 Bluetooth transmission display, 58 mounting round hole, 59 conical positioning screw 1, 60 conical positioning screw 2, 61 fourth positioning pin. DETAILED DESCRIPTION

[0032] like Figures 1 to 10 The shown device comprises a guide rail installation device for a laser machine tool body, comprising a machine tool body 1, a guide rail 2 being provided on the guide rail installation plane of the machine tool body 1, and a guide rail straightness adjustment device being provided on a side plane of the machine tool body perpendicular to the guide rail installation plane, comprising a steel belt tensioning mechanism 3, a steel belt position adjustment mechanism 4 and a steel belt 5 clamped between the steel belt tensioning mechanism 3 and the steel belt position adjustment mechanism 4 by a steel belt clamping mechanism respectively arranged at both ends of the guide rail 2, a guide rail straightness detection and calibration mechanism 6 being connected to the guide rail 2 via a guide rail slider 42; the steel belt clamping mechanism comprises a steel belt fixing base plate 7 and a steel belt fixing cover plate 8 connected by fastening screws 10, a steel belt clamping plate 9 being connected in an installation groove of the steel belt fixing cover plate 8, the two ends of the steel belt 5 being clamped on the steel belt clamping plate 9 respectively, and the fastening screws 10 are tightened so that the steel belt clamping plate 9 clamps and fixes the steel belt 5.

[0033] like Figures 2-4The steel belt tensioning mechanism 3 shown includes a connecting plate 11 fixedly connected to the side plane of the fuselage, the connecting plate 1 is fixedly connected to a fixing plate 12 by screws, a guide plate 13 is provided above the fixing plate 12, a Y-shaped tensioning plate 15 is connected to the fixing plate 12 by a first positioning pin 14, a sliding groove is provided on the guide plate 13, a sliding plate 16 is inserted into the guide groove of the guide plate 13, a straight portion at one end of the Y-shaped tensioning plate 15 passes through the fixing plate 12 and is connected to the sliding plate 16 by a second positioning pin 17, the second positioning pin 17 passes through the I-shaped groove of the Y-shaped tensioning plate 15, and a first threaded shaft is connected to the fork at the other end of the Y-shaped tensioning plate 15 18. Limit screws 19 and washers 20 are installed at both ends of the first threaded shaft 18; a tensioning seat 21 is fixedly connected to the bottom of the fixed plate 12 by screws, and the first adjusting screw 22 passes through the strip groove of the tensioning seat 21 and is screwed into the threaded hole of the first threaded shaft 18, thereby realizing a movably connection with the Y-shaped tensioning plate 15; a first steel belt support rotating shaft 23 is also provided on the fixed plate 12, and a first steel belt limiting plate 25 is connected to the top of the first steel belt support rotating shaft 23 by a first shoulder screw 24, and the bent end surface of the first steel belt limiting plate 25 is in contact with the steel belt 5, and the sliding plate 16 is connected to the steel belt fixed base plate 7 through a third positioning pin 26. When adjusting the tension of the steel belt 5, the distance between the Y-shaped tensioning plate 15 and the tensioning seat 21 is adjusted by adjusting the first adjusting screw 22. The Y-shaped tensioning plate 15 drives the sliding plate 16 to move in the guide groove of the guide plate 13, thereby tightening or loosening the steel belt 5. The end of the steel belt 5 is clamped between the steel belt fixed bottom plate 7 and the steel belt fixed cover plate 8. The surface of the steel belt 5 is in contact with the bent end surface of the first steel belt limiting plate 25. The bent end surface of the first steel belt limiting plate 25 provides further support and steering for the steel belt 5.

[0034] like Figures 5 to 8The steel belt position adjustment mechanism 4 shown includes a connecting plate 27 fixedly connected to the side plane of the fuselage, a fixing plate 28 is fixedly connected to the connecting plate 27 by screws, an adjusting plate 29 is connected to the lower plane of the fixing plate 28 by a positioning screw 30, a spring tightening screw 31 is screwed into the adjusting plate 29 and locked by a nut, a pressure plate 32 is connected to the side plane of the fixing plate 28 perpendicular to the lower plane of the fixing plate 28, a spring support screw 33 is screwed into the pressure plate 32 and locked by a nut, and a pressure spring 34 is provided between the two nuts; a second threaded shaft 35 is provided on the adjusting plate 29, and a second adjusting screw 36 passes through the pressure plate The strip groove 32 is screwed into the threaded hole of the second threaded shaft 35, thereby realizing a movably connection with the adjustment plate 29; a second steel belt support rotating shaft 37 is also provided on the fixed plate 28, and the lower end of the second steel belt support rotating shaft 37 passes through the fixed plate 28 and is connected to the adjustment plate 29, and the upper end of the second steel belt support rotating shaft 37 is connected to the second steel belt limiting plate 39 through the second shoulder screw 38, and the bent end surface of the second steel belt limiting plate 39 is abutted against the steel belt 5, and a connecting column 41 is connected to the fixed plate 28 through the third shoulder screw 40, and the fourth positioning pin 61 passes through the connecting column 41 and is connected to the steel belt fixed bottom plate 7 and the steel belt fixed cover plate 8. When the measured distance at both ends shows that the position of the steel belt 5 needs to be adjusted, the position of the adjustment plate 29 is adjusted by rotating the second adjustment screw 36 to relax or compress the clamping spring 34. The second steel belt support shaft 37 rotates with the adjustment of the adjustment plate 29, driving the second steel belt limit plate 39 to rotate. The bent end surface of the second steel belt limit plate 39 supports the steel belt 5, and its rotation angle adjusts the inclination angle of the steel belt 5 until the distance measured at both ends is within the error range of 0.002 mm, so that the steel belt 5 can be used as the straightening reference of the guide rail 2.

[0035] like Figures 9 and 10The guide rail straightness detection and calibration mechanism 6 shown includes a slider mounting plate 43 which is slidably connected to the guide rail 2 via a guide rail slider 42, two rack limit plates 44 are oppositely provided on the slider mounting plate 43, a toothed block 45 is provided between the two rack limit plates 44, the side surface of the toothed block 45 is screwed to one end of the connecting screw 46, a connecting block 47 is plugged into the connecting screw 46, and the other end of the connecting screw 46 is connected to the knob 48 by a screw; a slide plate 49 is connected to the top of the connecting block 47 by screws, and a cover plate 50 is provided above the slide plate 49, the cover plate 50 is fixedly connected to the slide plate 49 by screws and then installed in the groove on the upper surface of the toothed block 45, and the height of the slide plate 49 is consistent with the depth of the groove on the upper surface of the toothed block 45; the upper surfaces of the two rack limit plates 44 Symmetrical mounting holes are provided on the surface. The tightening nut 51 is screwed into the cover plate 50 and then installed into the mounting hole of the rack limit plate 44. The cover plate 50 and the slide plate 49 are tightened by rotating the tightening nut 51 downward. A sensor mounting plate 52 is vertically connected to the side end face of the slide plate 49. A distance detection sensor 53 is provided at the lower end of the sensor mounting plate 52, and the distance detection sensor is abutted against the steel belt. The mounting shaft of the detection switch 54 is inserted into the circular hole on one side of the cover plate 50. The locking screw 55 is screwed into the side of the cover plate 50 to lock and fix the mounting shaft. A Bluetooth transmission display 57 is installed on the side of the cover plate 50 opposite to the mounting shaft through the clamping plate 56. The detection switch 54 and the Bluetooth transmission display 57, and the distance detection sensor 53 and the Bluetooth transmission display 57 are respectively connected by cables.

[0036] A plurality of mounting circular holes 58 are provided on the guide rail 2. Conical positioning screw 1 59 and conical positioning screw 2 60 are respectively screwed into the first mounting circular hole 58 at both ends of the guide rail 2 to pre-tighten and position the guide rail, and mounting screws are screwed into the remaining mounting circular holes 58 to install the guide rail. When installing and calibrating the straightness of the guide rail 2, first place the conical positioning screws in the mounting circular holes 58 to pre-tighten the position of the guide rail 2. After the straightness adjustment is completed, use the guide rail mounting screws to replace the conical positioning screws to fasten the guide rail 2 to the machine tool body 1. This is convenient and quick, and the installation straightness of the guide rail 2 is effectively guaranteed.

[0037] The present invention also discloses a method for installing and straightening the guide rails of a laser machine tool body, comprising the following steps:

[0038] Step 1: Move the guide rail straightness detection and calibration mechanism 6 through the slider mounting plate 43 to one end of the guide rail 2 where the steel belt tensioning mechanism 3 is installed, close to the tapered positioning screw 59, and adjust the distance between the detection switch 54 and the upper plane of the guide rail to 1 mm. After adjustment, tighten the locking screw 55 to fix the detection switch 54 on the cover plate 50 of the guide rail straightness detection and calibration mechanism; then adjust the relative position of the tooth block 45 and the rack limit plate 44, and move the slide 49 in the groove on the upper surface of the tooth block 45 by rotating the knob 48, so as to adjust the distance between the distance detection sensor 53 and the steel belt 5 to 0.4 mm~0.6 mm, the measured distance of the distance detection sensor 53 is transmitted to the Bluetooth transmission display 57 and displayed, and this value is recorded; then the guide rail straightness detection calibration mechanism 6 is moved to the other end of the guide rail 2 through the slider mounting plate 43, close to the second tapered positioning screw 60, and the position of the steel belt 5 is adjusted by adjusting the second adjusting screw 36 so that the difference between the value displayed on the Bluetooth transmission display 57 and the aforementioned recorded value is less than 0.002 mm. After the adjustment is completed, click the "Return to Zero" button on the Bluetooth transmission display to make the displayed value 0. The position and tension of the steel belt are fixed, and the steel belt 5 can be used as a calibration reference for the guide rail straightness;

[0039] Step 2, click the measurement button on the Bluetooth transmission display 57 to turn on the computer, connect the computer to the Bluetooth transmission display 57 via Bluetooth, adjust the straightness of the guide rail, there are several mounting holes 58 within the full length of the guide rail 2, when the slider mounting plate 43 moves on the guide rail 2, the detection switch 54 detects and responds to each mounting hole 58, and continuously and automatically transmits data to the computer. After the data measurement is completed, the guide rail straightness test is completed; if the measurement reading of the distance detection sensor 53 displayed on the Bluetooth transmission display 57 is less than or equal to 0.01 mm, there is no need to adjust the guide rail 2; if the measurement reading is greater than 0.01 mm, fine-tune the guide rail 2 at the corresponding point. After the guide rail 2 is adjusted, use the guide rail mounting screws to replace the conical positioning screw 1 59 and the conical positioning screw 2 60, and tighten them with a torque wrench with a torque of 36 Nm; check the straightness of the guide rail through such operation steps, and adjust the guide rail 2 at the point where the difference exceeds the value.

[0040] When the present invention is working, a steel belt tensioning mechanism 3 and a steel belt position adjustment mechanism 4 are provided on the machine tool body 1, and the steel belt clamping mechanism clamps the steel belt 5 between the steel belt tensioning mechanism 3 and the steel belt position adjustment mechanism 4. A slidable guide rail straightness detection and calibration mechanism 6 is provided on the guide rail 2, so that the distance detection sensor 53 on the guide rail straightness calibration mechanism 6 maintains a certain distance from the steel belt 5. The position and tension of the steel belt 5 are adjusted by the steel belt tensioning mechanism 3 and the steel belt position adjustment mechanism 4, so that the steel belt 5 remains parallel to the two ends of the machine body guide rail. As the straightening reference for the guide rail straightness, the guide rail straightness detection and calibration mechanism 6 is moved within the full length of the guide rail during measurement to measure the distance between the guide rail and the straightening reference steel belt within the full length of the guide rail. The measured data is continuously transmitted one by one to the computer terminal by the Bluetooth transmission display 57 to observe the distance values between each measuring point on the guide rail 2 and the steel belt 5. If the difference exceeds the value, the guide rail 2 is adjusted to achieve the measurement and calibration of the guide rail straightness. The straightening method of the present invention can control the guide rail straightness calibration error within 0.002 mm, and the straightening accuracy is high.

[0041] Specifically: first, the steel belt tensioning mechanism 3 and the steel belt position adjustment mechanism 4 are installed on the machine tool body 1, and the fixed plate 12 of the steel belt tensioning mechanism 3 and the fixed plate 2 28 of the steel belt position adjustment mechanism 4 are respectively installed on the side plane of the machine body through the connecting plate 11 and the connecting plate 2 27. A steel belt clamping mechanism is provided on the fixed plate 12 and the fixed plate 2 28, including a steel belt fixing base plate 7 and a steel belt fixing cover plate 8 connected and fixed by fastening screws 10, and a steel belt clamping plate 9 is also provided in the installation groove of the steel belt fixing cover plate 8. When the steel belt 5 is installed, the two ends of the steel belt 5 are respectively clamped between the steel belt fixing base plate 7 and the steel belt fixing cover plate 8. The steel belt clamping plate 9 provides a large friction force for clamping the steel belt 5, keeps the position of the steel belt 5 stable, and avoids the steel belt fixing base plate 7 and the steel belt fixing cover plate 8 failing to clamp the steel belt 5 under the action of the fastening screws 10, causing deviation in the position of the steel belt 5. When the steel belt 5 is tightened, the first adjusting screw 22 is adjusted to adjust the distance between the Y-shaped tensioning plate 15 and the tensioning seat 21, and the second positioning pin 17 passes through the I-shaped groove in the straight part at one end of the Y-shaped tensioning plate 15. When the Y-shaped tensioning plate 15 moves under the action of the first adjusting screw 22, the second positioning pin 17 can move to a limited position in the I-shaped groove in the straight part at one end of the Y-shaped tensioning plate 15, so that the Y-shaped tensioning plate 15 can drive the sliding plate 16 to move in the guide groove of the guide plate 13, and the other side of the sliding plate 16 is opposite to the second positioning pin 17 and is also connected to the steel belt fixed base plate 7 through the third positioning pin 26. When the sliding plate 16 performs a limited displacement, the steel belt clamping mechanism is pulled from the side to the top, thereby tightening or loosening the steel belt 5. The surface of the steel belt 5 is in contact with the bent end surface of the first steel belt limiting plate 25, and the bent end surface of the first steel belt limiting plate 25 provides further support and steering for the steel belt 5. When adjusting the position of the steel belt, the position of the adjustment plate 29 is adjusted by rotating the second adjustment screw 36 to relax or compress the clamping spring 34. The second steel belt support shaft 37 rotates with the adjustment of the adjustment plate 29, driving the second steel belt limit plate 39 to rotate. The bent end surface of the second steel belt limit plate 39 supports the steel belt 5, and its rotation angle adjusts the inclination angle of the steel belt 5 until the distance measured at both ends of the guide rail is within the error range of 0.002 mm. The steel belt 5 is used as the straightening reference of the guide rail 2.

[0042] The present invention replaces the marble parallel ruler in the prior art with a steel belt, avoids the use of bulky marble as a guide rail alignment reference, reduces repeated handling and calibration of the marble parallel ruler, and reduces the production cost of the machine tool. When the processing range of the machine tool changes, the straightness of the machine tool guide rail can be adjusted by selecting a steel belt of appropriate length according to the length of the guide rail. Compared with the prior art method of replacing a bulky marble straight ruler or splicing multiple marble straight rulers, the present invention is convenient and quick to use, reduces the difficulty of adjustment, avoids repeated alignment, and can spend less time and money while ensuring alignment accuracy, thereby improving alignment efficiency. The steel belt is easy to organize and store in daily production and maintenance of the processing machine tool, is less affected by machine tool vibration, wear, etc., and reduces the impact on the guide rail alignment reference during alignment. During the guide rail alignment process, the measuring mechanism is connected to the computer, and the measured data is continuously and in real time transmitted to the computer terminal for convenient recording. The position of the guide rail at the corresponding point can be adjusted in time, saving adjustment time, improving the mechanization degree of guide rail alignment, and improving efficiency. The present invention is particularly suitable for use in the guide rail straightening device of high-precision machine tools with increased major axis length.

[0043] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some of the technical features therein according to the disclosed technical content without creative labor, and these substitutions and modifications are all within the protection scope of the present invention.

Claims

1. A guide rail mounting device for a laser machine tool, comprising a machine tool body, a guide rail provided on a guide rail mounting plane of the machine tool body, and a guide rail straightness adjustment device provided on a side plane of the machine tool body perpendicular to the guide rail mounting plane, characterized in that: The guide rail straightness adjustment device includes a steel belt tensioning mechanism, a steel belt position adjustment mechanism, and a steel belt clamped between the steel belt tensioning mechanism and the steel belt position adjustment mechanism, respectively, which are arranged at both ends of the guide rail. The guide rail is connected to a guide rail straightness detection and calibration mechanism via a guide rail slider. The steel belt clamping mechanism includes a steel belt fixing base plate and a steel belt fixing cover plate connected by fastening screws. A steel belt clamping plate is connected to the mounting groove of the steel belt fixing cover plate. The two ends of the steel belt are respectively clamped on the steel belt clamping plates. The fastening screws are tightened to clamp the steel belt clamping plates to fix the steel belt. The steel belt serves as a guide rail straightening reference. The steel belt position adjustment mechanism includes a connecting plate 2 fixedly connected to the side plane of the fuselage, the connecting plate 2 is fixedly connected to the fixing plate 2 by screws, the lower plane of the fixing plate 2 is connected to the adjusting plate by a positioning screw, the spring tightening screw is screwed into the adjusting plate and locked by a nut, a pressure plate is connected to the second side plane of the fixing plate perpendicular to the lower plane of the fixing plate 2, the spring support screw is screwed into the pressure plate and locked by a nut, and a compression spring is provided between the two nuts; a second threaded shaft is provided on the adjusting plate, and the second adjusting screw passes through the pressure plate The strip groove is screwed into the threaded hole of the second threaded shaft, thereby realizing movably connection with the adjustment plate; the second fixed plate is also provided with a second steel belt support rotating shaft, the lower end of the second steel belt support rotating shaft passes through the second fixed plate and is connected to the adjusting plate, the upper end of the second steel belt support rotating shaft is connected to the second steel belt limiting plate through the second shoulder screw, the bent end surface of the second steel belt limiting plate is abutted against the steel belt, the fixed plate is connected with a connecting column through the third shoulder screw, and the fourth positioning pin passes through the connecting column and is connected to the steel belt fixed bottom plate and the steel belt fixed cover plate.

2. The guide rail mounting device for a laser machine tool according to claim 1, characterized in that: The steel belt tensioning mechanism includes a connecting plate 1 fixedly connected to the side plane of the fuselage, the connecting plate 1 is fixedly connected to the fixing plate 1 by screws, a guide plate is provided above the fixing plate 1, a Y-shaped tensioning plate is connected to the fixing plate 1 by a first positioning pin, a sliding groove is provided on the guide plate, the sliding plate is inserted into the guide groove of the guide plate, the straight portion of one end of the Y-shaped tensioning plate passes through the fixing plate 1 and is connected to the sliding plate by a second positioning pin, the second positioning pin passes through the I-shaped groove of the Y-shaped tensioning plate, and the fork at the other end of the Y-shaped tensioning plate is connected to a first threaded shaft. , limiting screws and gaskets are installed at both ends of the first threaded shaft; a tensioning seat is fixedly connected to the bottom of the fixing plate one by screws, and the first adjusting screw passes through the strip groove of the tensioning seat and is screwed into the threaded hole of the first threaded shaft, thereby realizing movably connection with the Y-shaped tensioning plate; a first steel belt support rotating shaft is also provided on the fixing plate one, and a first steel belt limiting plate is connected to the top of the first steel belt support rotating shaft by a first shoulder screw, and the bent end surface of the first steel belt limiting plate is abutted against the steel belt, and the sliding plate is connected to the steel belt fixed base plate by a third positioning pin.

3. The guide rail mounting device for a laser machine tool according to claim 1, wherein: The guide rail straightness detection and calibration mechanism includes a slider mounting plate slidably connected to the guide rail via the guide rail slider, and two rack limit plates are relatively provided on the slider mounting plate, and a toothed block is provided between the two rack limit plates, and the side surface of the toothed block is screwed to one end of the connecting screw, and the connecting block is inserted into the connecting screw, and the other end of the connecting screw is connected to the knob by a screw; a slide is connected to the top of the connecting block by screws, and a cover plate is provided above the slide, and the cover plate and the slide are fixedly connected by screws and installed in the groove on the upper surface of the toothed block, and the height of the slide is consistent with the depth of the groove on the upper surface of the toothed block; the two rack limit plates The upper surface is symmetrically provided with mounting holes, which are screwed into the tightening nut with a screw and then installed into the mounting hole of the rack limit plate. The cover plate and the skateboard are tightened by rotating the tightening nut downward; a sensor mounting plate is vertically connected to the side end surface of the skateboard, and a distance detection sensor is provided at the lower end of the sensor mounting plate, and the distance detection sensor is abutted against the steel belt; the mounting shaft of the detection switch is inserted into the circular hole on one side of the cover plate, and the locking screw is screwed into the side of the cover plate to lock and fix the mounting shaft. A Bluetooth transmission display is installed on the side of the cover plate opposite to the mounting shaft through a clamping plate, and the detection switch and the Bluetooth transmission display, and the distance detection sensor and the Bluetooth transmission display are respectively connected through cables.

4. The guide rail mounting device for a laser machine tool according to claim 3, wherein: The guide rail is provided with a plurality of mounting circular holes. Conical positioning screw 1 and conical positioning screw 2 are respectively screwed into the first mounting circular hole at both ends of the guide rail to pre-tighten and position the guide rail, and mounting screws are screwed into the remaining mounting circular holes to install the guide rail.

5. The installation and straightening method of the guide rail installation device of a laser machine tool according to claim 4, characterized in that: The steps include: Step 1. Move the guide rail straightness detection and calibration mechanism through the slider mounting plate to one end of the guide rail near the installation of the steel belt tensioning mechanism, close to the tapered positioning screw 1, adjust the distance between the detection switch and the upper plane of the guide rail to 1 mm, and tighten the locking screw after adjustment to fix the detection switch on the guide rail straightness detection and calibration mechanism. Then adjust the relative position of the toothed block and the rack limit plate, and rotate the knob to move the slide back and forth in the groove on the upper surface of the toothed block, so as to adjust the distance from the distance detection sensor to the steel belt between 0.4 mm and 0.6 mm. The measured distance of the distance detection sensor is transmitted to the Bluetooth transmission display and displayed, and this value is recorded; move the guide rail straightness detection and calibration mechanism through the slider mounting plate to the other end of the guide rail, close to the tapered positioning screw 2, and adjust the position of the steel belt by adjusting the second adjusting screw so that the value displayed on the Bluetooth transmission display differs from the aforementioned recorded value by less than 0.002 mm. Click the "Return to Zero" button on the Bluetooth transmission display to make the displayed value 0; Step 2. Click the measurement button on the Bluetooth transmission display to turn on the Bluetooth transmission. Adjust the guide rail. The slider mounting plate moves within the full length of the guide rail. The measurement reading of the distance detection sensor displayed on the Bluetooth transmission display is less than or equal to 0.01 mm. After the guide rail is adjusted, use the guide rail mounting screws to replace the conical positioning screw 1 and the conical positioning screw 2, and tighten them with a torque wrench with a torque of 36 Nm. Check the straightness of the guide rail. If the measurement reading is greater than 0.01 mm, readjust it. Turn on the computer and connect the computer to the Bluetooth transmission display via Bluetooth. The slider mounting plate drives the guide rail straightness detection and calibration mechanism to move from one end of the guide rail to the other end. When the detection switch detects the mounting hole, it automatically transmits data to the computer. After the measurement data is transmitted and saved, the guide rail straightness adjustment is completed.

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