Gantry double-drive synchronous machine tool and lead screw assembling method thereof

Abstract

The invention relates to the technical field of numerical control machine tools, and provides a gantry double-drive synchronous machine tool and a lead screw assembling method.The gantry double-drive synchronous machine tool comprises a machine tool body component, a cross beam assembly and a lead screw, the machine tool body component comprises a machine tool body, two guide rails and two support assemblies, the two guide rails are arranged at the two ends of the machine tool body in parallel, and the two support assemblies are located on the outer sides of the two guide rails respectively; each support assembly comprises a front support and a rear support which are arranged in the extending direction of the guide rail. The two ends of the cross beam assembly are arranged on the two guide rails in a sliding mode, the cross beam assembly comprises a cross beam and nut bases located at the two ends of the cross beam, the cross beam and the nut bases are integrally formed, and nut base holes are formed in the nut bases; the lead screw is arranged in the nut seat hole in a penetrating mode, and the two ends of the lead screw are rotationally connected with the front support and the rear support respectively. The cross beam and the nut bases on the two sides of the cross beam are integrated into a whole part, the assembling precision is improved, the coaxiality of the two nut bases and the corresponding front and rear supports is adjusted at the same time through the two testing rods, and the assembling and adjusting efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of numerically controlled machine tools, and in particular to a gantry dual-drive synchronous machine tool and a lead screw assembly method thereof. Background Art

[0002] With the development of modern manufacturing industry, CNC machine tools are being used more and more widely. Among them, gantry machine tools are widely used in precision machining of large parts due to their stable structure and large machining range. In the design of traditional gantry machine tools, the movement of the beam usually adopts a single drive mode, that is, a single screw or hydraulic cylinder or other transmission device is used to drive the beam to move along the guide rail. However, with the continuous improvement of the requirements for machining accuracy and load capacity, the single drive mode has gradually exposed its limitations and cannot meet the requirements of higher standards of machining. Therefore, a gantry machine tool with a dual-drive synchronous structure has emerged. This structure installs a screw on each side of the beam, and uses two motors to synchronously drive the two screws, thereby driving the beam to move smoothly and accurately.

[0003] However, in practical applications, the gantry machine tool with a dual-drive synchronous structure also faces a series of challenges. Especially during the assembly process, ensuring the assembly accuracy of the two lead screws has become a key factor restricting the performance of the machine tool. Since the crossbeam, the left nut seat and the right nut seat are usually processed separately as three independent parts and then assembled on site, this assembly method has many shortcomings. First, the assembly accuracy is difficult to guarantee. Since there may be slight dimensional deviations in the three parts during the processing, the mating surfaces of multiple parts need to be aligned and fixed during on-site assembly, which can easily lead to error accumulation. Once the parallelism of the two lead screws in the vertical plane or the equal height in the horizontal plane cannot be accurately controlled, the crossbeam may tilt, which will seriously affect the processing accuracy and the overall performance of the machine tool. Secondly, the assembly efficiency is low. Since the debugging process of the nut seat position is cumbersome and time-consuming, and the assembly of multiple parts requires a lot of manpower and time, the assembly cost is increased.

[0004] Therefore, how to improve assembly efficiency while ensuring assembly accuracy has become a technical problem that needs to be urgently solved for dual-drive synchronous structure gantry machine tools. Summary of the invention

[0005] The invention provides a gantry double-drive synchronous machine tool and a lead screw assembly method thereof, which are used to solve the problems of low assembly precision and low assembly efficiency in the existing gantry machine tools with double-drive synchronous structures.

[0006] The present invention provides a gantry dual-drive synchronous machine tool, comprising: A bed component, comprising a bed and two guide rails and two support assemblies arranged on the bed, wherein the two guide rails are arranged in parallel at both ends of the bed, and the two support assemblies are respectively located on the outsides of the two guide rails, and each support assembly comprises a front support and a rear support arranged along the extension direction of the guide rails; A crossbeam assembly, the two ends of which are slidably arranged on the two guide rails, comprising a crossbeam and nut seats located at the two ends of the crossbeam, the crossbeam and the nut seat being integrally formed, and a nut seat hole being provided on the nut seat; A lead screw is inserted into the nut seat hole, and two ends of the lead screw are rotatably connected to the front support and the rear support respectively.

[0007] According to the gantry dual-drive synchronous machine tool provided by the present invention, the crossbeam assembly includes a first nut seat and a second nut seat respectively located at two ends of the crossbeam, the first nut seat is provided with a first nut seat hole, the second nut seat is provided with a second nut seat hole, and the central axis of the first nut seat hole and the central axis of the second nut seat hole are parallel to each other.

[0008] According to the gantry dual-drive synchronous machine tool provided by the present invention, the central axis of the first nut seat hole and the central axis of the second nut seat hole are arranged at the same height in the height direction of the beam assembly.

[0009] According to the gantry dual-drive synchronous machine tool provided by the present invention, the front support is provided with a front support hole, the rear support is provided with a rear support hole, and the front support hole, the rear support hole and the nut seat hole are coaxially arranged.

[0010] According to the gantry dual-drive synchronous machine tool provided by the present invention, at least one sliding block is slidably provided on each of the guide rails, and the sliding block is fixedly connected to the bottom of the crossbeam assembly.

[0011] The present invention also provides a method for assembling a lead screw of a gantry dual-drive synchronous machine tool as described in any one of the above items, comprising the following steps: Slidingly arranging the two ends of the beam assembly on the two guide rails; Install a test rod at the position of the nut seat hole of the crossbeam assembly; Assembling the support assembly on the outer sides of the two guide rails respectively; Using the dial gauge and the inspection rod to adjust the position and height of the front support and the rear support; The test rod is removed, and the lead screw is connected to the front support, the nut support and the rear support respectively.

[0012] According to the lead screw assembly method of the gantry dual-drive synchronous machine tool provided by the present invention, the step of slidingly arranging the two ends of the beam assembly on the two guide rails comprises: At least one sliding block is slidably mounted on each of the two guide rails; The sliding blocks on the two guide rails are fixedly mounted on the bottoms of both ends of the beam assembly respectively.

[0013] According to the lead screw assembly method of the gantry dual-drive synchronous machine tool provided by the present invention, the step of installing the test rod at the position of the nut seat hole of the beam assembly includes: A test rod is respectively installed in the nut seat holes of the two nut seats.

[0014] According to the lead screw assembly method of the gantry dual-drive synchronous machine tool provided by the present invention, the step of adjusting the position and height of the front support and the rear support by using the micrometer and the inspection rod in combination comprises: Fixing the universal meter frame on the bed through the magnetic attraction of the magnetic base; Placing the probe of the micrometer in contact with the first end of the test rod; Pushing the crossbeam assembly to allow the test rod to be inserted into the front support; Adjusting the position and height of the front support according to the change of the micrometer; and, contacting the probe of the micrometer with the second end of the test rod; Pushing the crossbeam assembly to allow the test rod to be inserted into the rear support; The position and height of the rear support are adjusted according to the changes of the micrometer.

[0015] According to the lead screw assembly method of the gantry dual-drive synchronous machine tool provided by the present invention, the probes of the two micrometers are respectively contacted with the first end or the second end of the two inspection rods, and the crossbeam assembly is pushed so that the two inspection rods are simultaneously inserted into the two front supports or the two rear supports.

[0016] The above technical solution of the present invention has the following beneficial effects: The gantry dual-drive synchronous machine tool and the screw assembly method thereof of the present invention reduce the steps and difficulty of on-site assembly by processing the crossbeam and the screw nut seats on both sides of the crossbeam into an integral component, thereby improving the assembly efficiency, and at the same time ensuring the parallelism of the two screw nut seats with the crossbeam reference plane, as well as the parallelism of the two screw nut seats on the vertical plane and the equal height on the horizontal plane, thereby ensuring the parallelism and equal height of the two screws and improving the assembly accuracy. In addition, the present invention also uses two test rods to simultaneously adjust the coaxiality of the two screw nut seats and the corresponding front and rear supports, thereby reducing the difficulty of debugging for on-site workers, improving the assembly adjustment efficiency, reducing the number of reworks, and reducing the difficulty of operation for subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of a gantry dual-drive synchronous machine tool provided by an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a beam assembly provided in an embodiment of the present invention; Figure 3 A schematic structural diagram of a gantry dual-drive synchronous machine tool provided in an embodiment of the present invention using a test rod to adjust the position and height of a front support or a rear support; Figure 4 A side view of a gantry dual-drive synchronous machine tool provided in an embodiment of the present invention using a test rod to adjust the position and height of a front support or a rear support; Figure 5 A flow chart of a method for assembling a lead screw of a gantry dual-drive synchronous machine tool provided in an embodiment of the present invention.

[0019] Reference numerals: 1. Crossbeam assembly; 2. Lead screw; 3. Bed; 4. Guide rail; 5. Front support; 6. Rear support; 7. Slider; 8. Test rod; 101. Crossbeam; 102. First nut seat; 103. Second nut seat; 1021. First nut seat hole; 1031. Second nut seat hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1 and Figure 2The present invention provides a gantry dual-drive synchronous machine tool, including a bed part, a beam assembly 1 and a lead screw 2. The bed part includes a bed 3 and two guide rails 4 and two support assemblies arranged on the bed 3. The two guide rails 4 are arranged in parallel at the two ends of the bed 3. The two support assemblies are respectively located on the outside of the two guide rails 4. Each support assembly includes a front support 5 and a rear support 6 arranged along the extension direction of the guide rails 4. The two ends of the beam assembly 1 are slidably arranged on the two guide rails 4. The beam assembly 1 includes a beam 101 and a nut seat (a first nut seat 102 and a second nut seat 103) located at the two ends of the beam 101. The beam 101 and the nut seat are integrally formed to form an integral component. Among them, each nut seat is provided with a nut seat hole, and the two lead screws 2 are respectively inserted into the two nut seat holes, and the two ends of each lead screw 2 are respectively rotatably connected with a front support 5 and a rear support 6.

[0022] Specifically, the crossbeam assembly 1 includes a first nut seat 102 and a second nut seat 103 respectively located at both ends of the crossbeam 101, a first nut seat hole 1021 is provided on the first nut seat 102, a second nut seat hole 1031 is provided on the second nut seat 103, the central axis of the first nut seat hole 1021 and the central axis of the second nut seat hole 1031 are parallel to each other, and the central axis of the first nut seat hole 1021 and the central axis of the second nut seat hole 1031 are arranged at the same height in the height direction of the crossbeam assembly 1. The present invention integrates the crossbeam 101 and the first nut seat 102 and the second nut seat 103 on both sides of the crossbeam 101 into an integral component, and there is no need to assemble the crossbeam and the nut seat, thereby reducing the steps and difficulty of on-site assembly and improving assembly efficiency. At the same time, the one-piece structural design also ensures the parallelism of the two nut seats with the crossbeam reference plane, as well as the parallelism of the two nut seats on the vertical plane and the equal height on the horizontal plane, thereby ensuring the parallelism and equal height of the two lead screws 2, thereby improving the assembly accuracy.

[0023] It should be noted that the crossbeam assembly 1 can be manufactured using high-precision processing equipment and technology to ensure that the dimensional accuracy and shape and position tolerance of the entire crossbeam assembly 1 meet the requirements.

[0024] The first nut seat hole 1021 and the second nut seat hole 1031 are both provided with threads on their wall, the first nut seat 102 is threadedly connected to a lead screw 2, and the second nut seat 103 is threadedly connected to another lead screw 2. Each nut seat is located between the front support 5 and the rear support 6 of a support assembly, the front support 5 is provided with a front support hole, the rear support 6 is provided with a rear support hole, and the front support hole, the rear support hole and the nut seat hole are coaxially arranged. Bearings are provided in the front support hole and the rear support hole, and the two ends of the lead screw 2 are rotatably connected to the front support 5 and the rear support 6 respectively through bearings.

[0025] The gantry dual-drive synchronous machine tool also includes at least one driving mechanism. If one driving mechanism is used, the driving mechanism drives the two lead screws 2 to rotate synchronously to drive the crossbeam assembly 1 to move along the guide rail 4. Of course, the two lead screws 2 can also be driven separately by two driving mechanisms, as long as the two driving mechanisms can maintain synchronous driving.

[0026] Each guide rail 4 is slidably provided with at least one slider 7, and the slider 7 is fixedly connected to the bottom of the beam assembly 1. For the stability of the structure, each guide rail 4 can be connected to the bottom of the beam assembly 1 through two or more sliders 7.

[0027] In one embodiment, the front support 5 and the rear support 6 are both mounted on the bed 3 via an adjustable fixing seat, and the position and height of the front support 5 or the rear support 6 are adjusted by adjusting the position and height of the adjusting fixing seat.

[0028] Of course, in other embodiments, the front support 5 and the rear support 6 can also be directly installed on the bed 3 through adjusting bolts. The bed 3 is provided with corresponding adjustment holes. The position of the front support 5 or the rear support 6 is adjusted by adjusting the position of the adjusting bolts in the adjusting holes, and the height of the front support 5 or the rear support 6 is adjusted by adjusting the height of the adjusting bolts extending out of the upper surface of the bed 3.

[0029] See also Figure 3-Figure 5 The present invention also provides a method for assembling a lead screw of a gantry dual-drive synchronous machine tool as described above, comprising the following steps: Step 1: Slidingly set the two ends of the beam assembly 1 on the two guide rails 4.

[0030] Before step 1, the method further includes the following steps: installing two parallel guide rails 4 on the bed 3 by means of bolts.

[0031] Wherein, step 1 specifically includes the following steps: Step 101 : slidably install at least one sliding block 7 on two guide rails 4 .

[0032] Step 102 , the sliders 7 on the two guide rails 4 are fixedly mounted on the bottoms of both ends of the crossbeam assembly 1 , respectively, to achieve a sliding connection between the crossbeam assembly 1 and the guide rails 4 .

[0033] Step 2: Install the test rod 8 at the nut hole position of the crossbeam assembly 1.

[0034] Wherein, a test rod 8 is respectively installed in the nut seat holes of the two nut seats of the crossbeam assembly 1.

[0035] Step 3: assemble the support assemblies on the outer sides of the two guide rails 4 respectively.

[0036] Specifically, each support assembly includes a front support 5 and a rear support 6 arranged along the extension direction of the guide rail 4, and the two support assemblies are respectively installed on the bed 3 outside the two guide rails 4 by fasteners.

[0037] Step 4, use the micrometer and the test rod 8 to adjust the position and height of the front support 5 and the rear support 6.

[0038] Specifically, step 4 includes the following steps: Step 401, fix the universal meter frame on the bed 3 through the magnetic attraction of the magnetic base.

[0039] Specifically, the magnetic base of the universal meter frame is placed on the bed 3, and the magnet switch of the magnetic base is turned on, so that the universal meter frame is adsorbed on the bed 3 by the magnetic attraction of the magnetic base.

[0040] Step 402 , contact the probe of the micrometer with the first end of the test rod 8 .

[0041] After the universal meter frame is fixed, the universal joint of the universal meter frame is rotated to bring the probe of the micrometer into contact with the first end of the test rod 8, and the pointer of the micrometer is rotated clockwise by a certain angle.

[0042] Step 403 , pushing the crossbeam assembly 1 to insert the test rod 8 into the front support 5 .

[0043] Step 404, adjusting the position and height of the front support 5 according to the change of the micrometer.

[0044] When the height of the front support 5 needs to be adjusted, the probe of the micrometer is brought into contact with the upper part of the first end of the test rod 8, and the micrometer pointer is rotated clockwise by a certain angle. After the test rod 8 is inserted into the front support 5, if the micrometer pointer rotates clockwise, it means that the axis of the test rod 8 is higher than the axis of the front support hole of the front support 5. At this time, the position of the front support 5 is adjusted upward so that the axis of the front support hole of the front support 5 and the axis of the test rod 8 are in the same horizontal plane; if the micrometer pointer rotates counterclockwise, it means that the axis of the test rod 8 is lower than the axis of the front support hole of the front support 5. At this time, the position of the front support 5 is adjusted downward so that the axis of the front support hole of the front support 5 and the axis of the test rod 8 are in the same horizontal plane.

[0045] When the position of the front support 5 needs to be adjusted, the probe of the micrometer is brought into contact with the side of the first end of the test rod 8, and the micrometer pointer is rotated clockwise by a certain angle. After the test rod 8 is inserted into the front support 5, if the micrometer pointer rotates clockwise, it means that the axis of the front support hole of the front support 5 is deviated away from the micrometer pointer relative to the axis of the test rod 8. At this time, the position of the front support 5 is adjusted in the direction toward the micrometer pointer so that the axis of the front support hole of the front support 5 and the axis of the test rod 8 are in the same vertical plane; if the micrometer pointer rotates counterclockwise, it means that the axis of the front support hole of the front support 5 is deviated toward the micrometer pointer relative to the axis of the test rod 8. At this time, the position of the front support 5 is adjusted in the direction away from the micrometer pointer so that the axis of the front support hole of the front support 5 and the axis of the test rod 8 are in the same vertical plane.

[0046] After completing the position and height adjustment of the front support 5, use the micrometer and the test rod 8 to adjust the position and height of the rear support 6. The specific steps are as follows: Step 405 , bringing the probe of the micrometer into contact with the second end of the test rod 8 .

[0047] The contact method between the probe of the micrometer and the second end of the test rod 8 is similar to the contact method in the above step 402, which will not be described in detail here.

[0048] Step 406 , pushing the crossbeam assembly 1 to allow the test rod 8 to be inserted into the rear support 6 .

[0049] Step 407, adjusting the position and height of the rear support 6 according to the change of the micrometer.

[0050] When the height of the rear support 6 needs to be adjusted, the probe of the micrometer is brought into contact with the upper part of the second end of the test rod 8, and the micrometer pointer is rotated clockwise by a certain angle. After the test rod 8 is inserted into the rear support 6, if the micrometer pointer rotates clockwise, it means that the axis of the test rod 8 is higher than the axis of the rear support hole of the rear support 6. At this time, the position of the rear support 6 is adjusted upward so that the axis of the rear support hole of the rear support 6 and the axis of the test rod 8 are in the same horizontal plane; if the micrometer pointer rotates counterclockwise, it means that the axis of the test rod 8 is lower than the axis of the rear support hole of the rear support 6. At this time, the position of the rear support 6 is adjusted downward so that the axis of the rear support hole of the rear support 6 and the axis of the test rod 8 are in the same horizontal plane.

[0051] When the position of the rear support 6 needs to be adjusted, the probe of the micrometer is brought into contact with the side of the second end of the test rod 8, and the micrometer pointer is rotated clockwise by a certain angle. After the test rod 8 is inserted into the rear support 6, if the micrometer pointer rotates clockwise, it means that the axis of the rear support hole of the rear support 6 is deviated away from the micrometer pointer relative to the axis of the test rod 8. At this time, the position of the rear support 6 is adjusted in the direction toward the micrometer pointer so that the axis of the rear support hole of the rear support 6 and the axis of the test rod 8 are in the same vertical plane; if the micrometer pointer rotates counterclockwise, it means that the axis of the rear support hole of the rear support 6 is deviated toward the micrometer pointer relative to the axis of the test rod 8. At this time, the position of the rear support 6 is adjusted in the direction away from the micrometer pointer so that the axis of the rear support hole of the rear support 6 and the axis of the test rod 8 are in the same vertical plane.

[0052] It can be understood that the height adjustment of the front support 5 and the rear support 6 refers to the displacement in the vertical direction, and the position adjustment of the front support 5 and the rear support 6 refers to the displacement in the horizontal direction.

[0053] It should be noted that, in the process of adjusting the position and height of the front support 5, the probes of the two micrometers are firstly contacted with the first ends of the two test rods 8 respectively, and then the crossbeam assembly 1 is pushed to insert the two test rods 8 into the two front supports 5 at the same time, thereby realizing the simultaneous adjustment of the coaxiality of the two nut seats and the corresponding front supports 5. Similarly, in the process of adjusting the position and height of the rear support 6, the probes of the two micrometers are firstly contacted with the second ends of the two test rods 8 respectively, and then the crossbeam assembly 1 is pushed to insert the two test rods 8 into the two rear supports 6 at the same time, thereby realizing the simultaneous adjustment of the coaxiality of the two nut seats and the corresponding rear supports 6, thereby significantly shortening the debugging time and improving the assembly efficiency.

[0054] After the positions and heights of the two front supports 5 and the two rear supports 6 are adjusted, the following steps are also included: Step 5, remove the test rod 8, and connect the lead screw to the front support 5, the nut seat and the rear support 6 respectively.

[0055] The screw assembly method of the gantry dual-drive synchronous machine tool of the present invention adopts an integrally formed crossbeam assembly, so there is no need to assemble the crossbeam and the nut seats on both sides of the crossbeam separately, and there is no need to adjust the position of the nut seats. The integrated design reduces the error accumulation and the steps and difficulty of on-site assembly, improves the stability and reliability of the mechanical structure, and improves the assembly efficiency; at the same time, it also ensures the parallelism of the two nut seats with the crossbeam reference plane, as well as the parallelism of the two nut seats on the vertical plane and the equal height on the horizontal plane, thereby ensuring the parallelism and equal height of the two screws and improving the assembly accuracy. The present invention also uses two test rods to simultaneously adjust the coaxiality of the two nut seats and the corresponding front and rear supports, reducing the difficulty of debugging for on-site workers, significantly shortening the debugging time, improving the assembly adjustment efficiency, reducing the number of reworks, and reducing the difficulty of operation for subsequent maintenance.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gantry dual-drive synchronous machine tool, characterized in that: include: A bed component, comprising a bed and two guide rails and two support assemblies arranged on the bed, wherein the two guide rails are arranged in parallel at both ends of the bed, and the two support assemblies are respectively located on the outsides of the two guide rails, and each support assembly comprises a front support and a rear support arranged along the extension direction of the guide rails; A crossbeam assembly, the two ends of which are slidably arranged on the two guide rails, comprising a crossbeam and nut seats located at the two ends of the crossbeam, the crossbeam and the nut seat being integrally formed, and a nut seat hole being provided on the nut seat; A lead screw is inserted into the nut seat hole, and two ends of the lead screw are rotatably connected to the front support and the rear support respectively.

2. The gantry dual-drive synchronous machine tool according to claim 1, characterized in that: The crossbeam assembly includes a first nut seat and a second nut seat respectively located at two ends of the crossbeam, the first nut seat is provided with a first nut seat hole, the second nut seat is provided with a second nut seat hole, and the central axis of the first nut seat hole and the central axis of the second nut seat hole are parallel to each other.

3. The gantry dual-drive synchronous machine tool according to claim 2, characterized in that: The central axis of the first nut seat hole and the central axis of the second nut seat hole are arranged at the same height in the height direction of the beam assembly.

4. The gantry dual-drive synchronous machine tool according to claim 1, characterized in that: The front support is provided with a front support hole, the rear support is provided with a rear support hole, and the front support hole, the rear support hole and the nut seat hole are coaxially arranged.

5. The gantry dual-drive synchronous machine tool according to claim 1, characterized in that: At least one sliding block is slidably arranged on each guide rail, and the sliding block is fixedly connected to the bottom of the crossbeam assembly.

6. A method for assembling a lead screw of a gantry dual-drive synchronous machine tool according to any one of claims 1 to 5, characterized in that: The following steps are involved: Slidingly arranging the two ends of the beam assembly on the two guide rails; Install a test rod at the position of the nut seat hole of the crossbeam assembly; Assembling the support assembly on the outer sides of the two guide rails respectively; Using the dial gauge and the inspection rod to adjust the position and height of the front support and the rear support; The test rod is removed, and the lead screw is connected to the front support, the nut support and the rear support respectively.

7. The method for assembling a lead screw of a gantry dual-drive synchronous machine tool according to claim 6, characterized in that: The step of slidingly arranging the two ends of the beam assembly on the two guide rails comprises: At least one sliding block is slidably mounted on each of the two guide rails; The sliding blocks on the two guide rails are fixedly mounted on the bottoms of both ends of the beam assembly respectively.

8. The method for assembling a lead screw of a gantry dual-drive synchronous machine tool according to claim 6, characterized in that: The step of installing a test rod at the nut seat hole position of the crossbeam assembly comprises: A test rod is respectively installed in the nut seat holes of the two nut seats.

9. The method for assembling a lead screw of a gantry dual-drive synchronous machine tool according to claim 8, characterized in that: The steps of adjusting the position and height of the front support and the rear support by using the micrometer and the inspection rod include: Fixing the universal meter frame on the bed through the magnetic attraction of the magnetic base; Placing the probe of the micrometer in contact with the first end of the test rod; Pushing the crossbeam assembly to allow the test rod to be inserted into the front support; Adjusting the position and height of the front support according to the change of the micrometer; and, contacting the probe of the micrometer with the second end of the test rod; Pushing the crossbeam assembly to allow the test rod to be inserted into the rear support; The position and height of the rear support are adjusted according to the changes of the micrometer.

10. The method for assembling a lead screw of a gantry dual-drive synchronous machine tool according to claim 9, characterized in that: The probes of the two micrometers are respectively contacted with the first ends or the second ends of the two inspection rods, and the crossbeam assembly is pushed so that the two inspection rods are inserted into the two front supports or the two rear supports at the same time.

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