Cradle assembling platform and method

Abstract

The cradle assembly platform comprises a rack, an installation structure and a detection structure, an installation guide rail is arranged on the rack, and the extension direction of the installation guide rail is the first direction; the mounting structure comprises a first mounting platform, a second mounting platform and a third mounting platform; the first mounting platform and the second mounting platform are arranged on the mounting guide rail at intervals in the first direction, the first mounting platform is used for mounting a tail end seat, and the second mounting platform is used for mounting a motor seat; the third mounting platform is arranged on the rack between the first mounting platform and the second mounting platform, and the third mounting platform is used for mounting a cradle group; and the detection structure is mounted on the rack. According to the structure, servo drive and the high-precision measuring head are used for precision measurement in the rotary table assembling process, manual meter pushing and alignment are replaced, and convenience and high efficiency are achieved; and the assembly precision of the motor seat, the tail end seat and the cradle group can be effectively ensured.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control machine tools, and in particular to a cradle assembly platform and an assembly method. Background Art

[0002] The five-axis cradle turntable is an important part of the CNC machine tool. During the assembly process of the five-axis cradle turntable, it is necessary to ensure that the A-axis rotation axis of the cradle group is coaxial with the rotation axis of the A-axis turntable and the tailstock. At the same time, it is also necessary to ensure that the C-axis rotation axis of the cradle group is coplanar with the A-axis rotation axis.

[0003] The existing five-axis cradle turntable adopts the method of installing the motor seat, tail end seat and cradle assembly first, and then measuring the overlap of the A-axis and C-axis after the installation is completed, and then adjusting the overlap of the AC axis. The operation is cumbersome and the accuracy is not easy to guarantee. The solution is to complete the measurement of the AC axis overlap during the installation process, and then install it after ensuring the AC axis overlap. However, in this process, the installer needs to use special gauges and inspection tools for measurement. The manual operation process will introduce cumulative errors, and the final accuracy will have a certain deviation. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the existing five-axis cradle turntable, which adopts the method of first installing the motor seat, the tail end seat and the cradle group, and then measuring the overlap of the A axis and the C axis after the installation is completed, and then adjusting the overlap of the AC axis. The operation is cumbersome and the accuracy is not easy to guarantee. The solution is to complete the measurement of the AC axis overlap during the installation process, and then install it after ensuring the AC axis overlap. However, in this process, the installer needs to use special gauges and inspection tools for measurement, and the manual operation process will introduce cumulative errors, and the final accuracy will have a certain deviation.

[0005] To this end, the present invention provides a cradle assembly platform, comprising: A rack, wherein a mounting rail is disposed on the rack, and an extending direction of the mounting rail is a first direction; The mounting structure comprises a first mounting platform, a second mounting platform and a third mounting platform; the first mounting platform and the second mounting platform are arranged on the mounting rail at intervals along a first direction, the first mounting platform is used to install the tail end seat, and the second mounting platform is used to install the motor seat; the third mounting platform is arranged on the frame between the first mounting platform and the second mounting platform, and the third mounting platform is used to install the cradle group; A detection structure is installed on the frame, and the detection structure is used to detect the positional relationship between the tail end seat, the motor seat and the cradle assembly.

[0006] Optionally, the first mounting platform and the second mounting platform can be slidably mounted on the mounting rail; Both ends of the third mounting platform are respectively fixed to the racks on both sides of the mounting rail along a second direction perpendicular to the first direction so that the third mounting platform is straddled on the mounting rail.

[0007] Optionally, the above-mentioned third mounting platform includes: a cradle group support platform, an adjusting bolt and an adjusting bracket, the adjusting bolt being installed on the cradle group support platform; four adjusting bolts are provided, and the four adjusting bolts are respectively arranged at the corner positions of the cradle group support platform, and the four adjusting bolts are respectively fixed on both sides of the mounting guide rail along the second direction; a plurality of adjustment brackets are provided, and a plurality of adjustment brackets are installed on the top surface of the cradle group support platform, and the adjustment brackets are used to install and adjust the cradle group.

[0008] Optionally, the above detection structure includes: a driving component, a first detection member and a detection component; The driving assembly is mounted on the frame; The first detection member is suitable for being installed at the output end of the driving assembly; The detection assembly can be mounted on the motor seat and the tail end seat.

[0009] Optionally, the above-mentioned detection assembly includes: a tail end seat detection rod and a motor seat detection rod, the tail end seat detection rod is suitable for being coaxially installed on the tail end seat, and the motor seat detection rod is suitable for being coaxially installed on the motor seat.

[0010] Optionally, a rail clamp is provided on the above-mentioned mounting rail.

[0011] Optionally, anchor bolts are installed at the bottom end of the frame.

[0012] An assembly method, including the above-mentioned cradle assembly platform, includes the following steps: adjusting the upper end surface of the mounting guide rail; installing and adjusting the first mounting platform, the second mounting platform and the third mounting platform; installing the tail end seat on the first mounting platform, and installing the motor seat on the second mounting platform; adjusting the motor seat and the tail end seat, and detecting the first installation coordinates of the motor seat rotation axis and the tail end seat rotation axis through the detection structure; installing the cradle group on the third mounting platform and pre-adjusting the cradle group to obtain the second installation coordinates of the cradle group; adjusting the third mounting platform to change the position of the cradle group so that the error between the first installation coordinate and the second installation coordinate is within a preset range; Push the motor base and tail end base close to the cradle assembly and assemble them, and remove the third mounting platform.

[0013] Optionally, the above step of "detecting the first installation coordinates of the motor seat mounting end and the tail end seat mounting end through the detection structure" includes the following steps: installing a motor seat detection rod on the motor seat, adjusting the motor seat detection rod so that the motor seat detection rod is coaxial with the rotation axis of the motor seat; installing the tail end seat detection rod on the tail end seat, adjusting the tail end seat detection rod so that the tail end seat detection rod is coaxial with the main axis of the tail end seat; fixing the detection table on the drive assembly, and the drive assembly drives the detection table to move against the motor seat detection rod or the tail end seat detection rod to measure the coaxiality of the motor seat rotation axis and the tail end seat rotation axis; If the motor seat inspection rod and the tail end seat inspection rod are coaxial, the driving assembly drives the first detection member to detect the first installation coordinates of the motor seat rotation axis and the tail end seat rotation axis; If the motor base test rod and the tail end base test rod are not coaxial, the motor base and / or the tail end base are adjusted to make the motor base test rod and the tail end base test rod coaxial, and the driving component drives the first detection component to detect the first installation coordinates of the motor base test rod and the tail end base test rod.

[0014] Optionally, the above step of "installing and pre-adjusting the cradle group on the third installation platform to obtain the second installation coordinates of the cradle group; adjusting the third installation platform to change the position of the cradle group so that the error between the first installation coordinates and the second installation coordinates is within a preset range" includes the following steps: Clamp and install the cradle assembly between a plurality of adjustment brackets; Adjust the height and level of the cradle assembly by adjusting the adjusting bolts until the mandrel ends of the motor seat and the tail end seat can pass through the ends of the cradle assembly and the work surface at the top of the cradle assembly is in a horizontal state; The driving component drives the first detection component to measure the hole axis coordinate of the positioning hole at the center position of the worktable, which is recorded as the second installation coordinate; Determine the error between the second installation coordinate and the first installation coordinate. If the error between the second installation coordinate and the first installation coordinate is less than or equal to the preset value, no adjustment is required. If the error between the second installation coordinate and the first installation coordinate is greater than the preset value, adjust the adjustment bracket to drive the cradle group to shift horizontally until the error between the second installation coordinate and the first installation coordinate is less than or equal to the preset value.

[0015] The technical solution provided by the present invention has the following advantages: 1. A cradle assembly platform provided by the present invention comprises: a frame, a mounting structure and a detection structure, wherein a mounting rail is arranged on the frame, and the extension direction of the mounting rail is a first direction; the mounting structure comprises a first mounting platform, a second mounting platform and a third mounting platform; the first mounting platform and the second mounting platform are arranged on the mounting rail at intervals along the first direction, the first mounting platform is used for installing the tail end seat, and the second mounting platform is used for installing the motor seat; the third mounting platform is arranged on the frame between the first mounting platform and the second mounting platform, and the third mounting platform is used for installing the cradle group; the detection structure is installed on the frame, and the detection structure is used to detect the positional relationship between the tail end seat, the motor seat and the cradle group.

[0016] This structure uses servo drive and high-precision probe to measure the accuracy of the turntable assembly process, replacing manual table pushing and alignment, which is convenient and efficient; it can effectively ensure the assembly accuracy of the motor seat, tail end seat and cradle group. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods 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 overall structure of the cradle assembly platform provided by the present invention; Figure 2 A front view of the driving assembly provided by the present invention driving the detection meter to detect the coaxiality of the detection assembly; Figure 3 A rear axle side view of the cradle assembly platform provided by the present invention; Figure 4 A schematic diagram of the structure of installing the motor base, the tail end base and the cradle assembly on the mounting structure provided by the present invention; Figure 5 A schematic diagram of the structure of the driving assembly provided by the present invention driving the first detection member to detect the end surfaces of both sides of the cradle group; Figure 6 A schematic diagram of the coordinate positions of two points of the probe centering hole along the Y direction provided by the present invention; Figure 7 A schematic diagram of the structure of a third installation platform provided by the present invention; Figure 8 A method flow chart of the assembly method provided by the present invention; Description of reference numerals: 1-frame; 11-mounting rail; 12-anchor bolt; 2-installation structure; 21-first installation platform; 22-second installation platform; 23-third installation platform; 231-cradle group support platform; 232-adjusting bolt; 233-adjusting bracket; 3-detection structure; 31-driving assembly; 311-X-axis transport assembly; 312-Y-axis transport assembly; 313-Z-axis transport assembly; 3131-spindle box; 32-first detection piece; 33-detection assembly; 331-motor seat detection rod; 332-tail end seat detection rod; 333-detection table; 4- tail end seat; 5-Motor seat; 6-cradle assembly; 61-positioning hole; 7-Guide rail clamp. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] Example 1 This embodiment provides a cradle assembly platform, such as Figures 1 to 7As shown, it includes: a frame 1, a mounting structure 2 and a detection structure 3.

[0024] like Figure 1 and Figure 3 As shown, there are three anchor bolts 12 on both sides of the bottom end of the frame 1, with a total of six anchor bolts 12. The offset degree of the frame 1 can be adjusted by adjusting the anchor bolts 12, and the upper surface level of the first mounting platform 21 and the second mounting platform 22 in the mounting structure 2 can be ensured by adjusting the anchor bolts 12.

[0025] like Figures 1 to 7 As shown, a mounting rail 11 is fixed to the lower part of the front of the rack 1, and the mounting rail 11 is extended along the first direction. Figure 1 As shown in the coordinate system in FIG, the first direction is the X-axis direction. The mounting structure 2 includes a first mounting platform 21, a second mounting platform 22, and a third mounting platform 23; the first mounting platform 21 and the second mounting platform 22 are slidably mounted on the mounting rail 11 at intervals along the first direction. Both ends of the third mounting platform 23 are respectively fixed to the rack 1 on both sides of the mounting rail 11 along a second direction perpendicular to the first direction so that the third mounting platform 23 is straddled on the mounting rail 11, as shown in FIG. Figure 1 As shown in the coordinate system in , the first direction is the Y-axis direction. Specifically, the third mounting platform 23 includes: a cradle group support platform 231, an adjusting bolt 232 and an adjusting bracket 233. The cradle group support platform 231 is a rectangular plate. There are four adjusting bolts 232. The four adjusting bolts 232 are respectively fixed at the four corner positions of the cradle group support platform 231. The four adjusting bolts 232 are installed on both sides of the mounting guide rail 11 along a second direction perpendicular to the first direction, that is, there are two adjusting bolts 232 on both sides of the mounting guide rail 11, and the adjusting bolt 232 body is vertically arranged. An adjusting bracket 233 is also installed at the four corner positions of the top surface of the cradle group support platform 231. The adjusting bracket 233 is used to install and adjust the cradle group 6. The adjusting bracket 233 is an L-shaped plate. The horizontal section of the adjusting bracket 233 is connected to the cradle group support platform 231, and the vertical section of the adjusting bracket 233 is abutted against the side of the cradle group 6. The adjusting bracket 233 is connected with a screw for adjusting the position of the adjusting bracket 233.

[0026] like Figures 1 to 6As shown, the detection structure 3 includes a driving component 31 and a detection structure 3. The driving component 31 is a three-axis transport component, including an X-axis transport component 311, a Y-axis transport component 312 and a Z-axis transport component 313; the X-axis transport component 311 includes an X-axis guide rail and an X-axis drive. The Y-axis transport component 312 includes a Y-axis guide rail, a Y-axis transport plate and a Y-axis drive. The Z-axis transport component 313 includes a Z-axis guide rail and a Z-axis drive. Two Y-axis guide rails are provided, and the two Y-axis guide rails are respectively provided on both sides of the frame 1. The Y-axis guide rails extend along the Y-axis direction. The two ends of the Y-axis transport plate are installed on the two Y-axis guide rails through two sliders. The fixed end of the Y-axis drive is fixed on the frame 1, and the output end is installed on the Y-axis transport plate. The Y-axis drive can drive the Y-axis transport plate to move along the Y-axis guide rail toward or away from the installation guide rail 11. Two X-axis slide rails are installed on the upper and lower sides of the Y-axis transport plate. The slide saddle is installed on the X-axis slide rail through two sliders. The fixed end of the X-axis drive is fixed on the Y-axis transport plate. The output end of the X-axis drive is fixed on the slide saddle. The X-axis drive can push the slide saddle to move along the X-axis guide rail along the X-axis direction. Two Z-axis guide rails are installed on the side of the slide saddle close to the mounting guide rail 11. The spindle box 3131 is installed on the Z-axis guide rail. The fixed end of the Z-axis drive is installed on the slide saddle. The output end of the Z-axis drive is fixed on the spindle box 3131. The Z-axis drive drives the spindle box 3131 to move up and down along the Z-axis guide rail. The above arrangement realizes the three-axis movement of the mounting assembly. The spindle box 3131 also includes two degrees of freedom to realize the five-axis movement of the output end of the spindle box 3131. The X-axis drive, Y-axis drive and Z-axis drive are all composed of guide rails and lead screws; the base, crossbeam, saddle, spindle box 3131 and mounting guide rail 11 all have high processing accuracy, and matching high-precision guide rails and lead screws can ensure that the assembly and test platform has sufficient inspection accuracy.

[0027] like Figures 4 to 6 As shown, the detection structure 3 includes a first detection member 32 and a detection assembly 33. The first detection member 32 is a probe, which is fixed at the output end below the spindle box 3131. The detection assembly 33 includes: a tail end seat detection rod 332, a motor seat detection rod 331 and a detection gauge 333. The tail end seat detection rod 332 can be coaxially mounted on the tail end seat 4, and the motor seat detection rod 331 can be coaxially mounted on the motor seat 5. The detection gauge 333 is a micrometer, which is placed at the output end of the spindle box 3131 installed in the drive assembly 31, and the drive assembly 31 can drive the detection gauge 333 to move.

[0028] like Figure 3 As shown, a guide rail clamp 7 is also provided on the mounting guide rail 11 .

[0029] Example 2 This embodiment provides an assembly method for a cradle assembly platform, using the cradle assembly platform in Embodiment 1, such as Figure 8As shown, the steps are as follows: S1. Adjust the upper end surface of the mounting rail 11; adjust the anchor bolts 12 so that the upper end surface of the mounting rail 11 mounted on the rack 1 is in a horizontal state; specifically, in this embodiment, six anchor bolts 12 are provided at the bottom end of the rack 1, and two are provided on the left and right sides respectively. A level can be placed on the top surface of the mounting rail 11 to adjust the six anchor bolts 12 on both sides of the base until the upper end surface of the mounting rail 11 is in a horizontal state.

[0030] S2, installing and adjusting the first installation platform 21 and the second installation platform 22: Figure 2 As shown, the first mounting platform 21 and the second mounting platform 22 are adjusted, the joint surface between the first mounting platform 21 and the mounting rail 11, and the joint surface between the second mounting platform 22 and the mounting rail 11 are adjusted, so that the upper surface of the first mounting platform 21 and the upper surface of the second mounting platform 22 are both in a horizontal state parallel to the X-axis, and the two are coplanar.

[0031] Specifically, installing the first mounting platform 21 and the second mounting platform 22 includes: slidably installing the first mounting platform 21 on the left side of the mounting rail 11 through two sliders, and slidably installing the second mounting platform 22 on the right side of the mounting rail 11 through two sliders; adjusting the joint surface between the first mounting platform 21 and the mounting rail 11 includes: scraping the joint surface between the first mounting platform 21 and the mounting rail 11. Adjusting the joint surface between the second mounting platform 22 and the mounting rail 11 includes: scraping the joint surface between the second mounting platform 22 and the mounting rail 11.

[0032] S3, such as Figure 2 As shown, the third mounting platform 23 is installed: the third mounting platform 23 is installed between the first mounting platform 21 and the second mounting platform 22; specifically, the four adjusting bolts 232 are screwed into the threaded holes at the four corners of the cradle group supporting platform 231 from the bottom end, and the horizontal sections of the four adjustment brackets 233 are fixed at the four corner positions of the top surface of the cradle group supporting platform 231 to form the third mounting platform 23. Then the third mounting platform 23 is installed between the first mounting platform 21 and the second mounting platform 22, two adjusting bolts 232 are placed on the front side of the mounting rail 11, two adjusting bolts 232 are placed on the rear side of the mounting rail 11, and the four adjusting bolts 232 are fixed on the frame 1, so that the cradle group supporting platform 231 is placed above the mounting rail 11.

[0033] S4, such as Figure 2 As shown, the tail end seat 4 is installed on the first installation platform 21, and the motor seat 5 is installed on the second installation platform 22. Specifically, the tail end seat 4 is detachably installed on the first installation platform 21, and the motor seat 5 is detachably installed on the second installation platform 22.

[0034] S5, such as Figure 2 As shown, the tail end seat 4 and the motor seat 5 are adjusted, and the first installation coordinates of the rotation axis of the motor seat 5 and the rotation axis of the tail end seat 4 are detected by the detection structure 3: the motor seat detection rod 331 is installed on the rotation axis of the motor seat 5, and the coaxiality between the rotation axis of the motor seat 5 and the motor seat detection rod 331 is adjusted. The tail end seat detection rod 332 is installed on the main shaft of the tail end seat 4, and the coaxiality between the main shaft of the tail end seat 4 and the tail end seat detection rod 332 is adjusted.

[0035] The detection gauge 333 is a micrometer, which is installed on the spindle box 3131. The driving assembly 31 drives the detection gauge 333 to press against the outer surface of the motor seat check rod 331. The micrometer is moved to detect the runout of the micrometer on the motor seat check rod 331. The micrometer moves along the X-axis with the driving assembly 31 to measure the positive busbar and the side busbar of the motor seat check rod 331. The position of the axis of the motor seat check rod 331 is detected according to the runout, and then the position of the rotating shaft of the motor seat 5 is obtained. The driving component 31 drives the detection gauge 333 to press against the outer surface of the tail end seat inspection rod 332, and detects the runout of the micrometer on the tail end seat inspection rod 332 by moving the detection gauge 333. The micrometer moves along the X-axis with the driving component 31 to measure the positive busbar and the side busbar of the tail end seat inspection rod 332. The position of the axis of the tail end seat inspection rod 332 is detected according to the runout situation, and then the position of the rotating axis of the tail end seat 4 is obtained.

[0036] If the axis position of the motor seat detection rod 331 is the same as the axis position of the tail end seat detection rod 332, the driving assembly 31 drives the first detection member 32 to obtain the first installation coordinates of the rotation axis of the motor seat 5 and the rotation axis of the tail end seat 4; If the motor seat inspection rod 331 and the tail end seat inspection rod 332 are not coaxial, by adjusting one or more of the first mounting platform 21, the second mounting platform 22, the motor seat 5 and the tail end seat 4 to ensure that the rotating axis of the tail end seat 4 and the rotating axis of the motor seat 5 are coaxial, the driving component 31 drives the detection table 333 to obtain the first installation coordinates of the rotating axis of the motor seat 5 and the rotating axis of the tail end seat 4.

[0037] The steps for obtaining the first installation coordinates are as follows: remove the detection table 333, install the first detection member 32 at the lower end of the spindle box 3131, the first detection member 32 is a probe, move the spindle box 3131 along the Y direction, measure the inner generatrix coordinates of the A-axis tail end seat detection rod 332 or the motor seat detection rod 331 by the probe, and record the Y-axis coordinate as a. The spindle box 3131 moves along the Z direction, so that the probe is higher than the tail end seat detection rod 332 or the motor seat detection rod 331, and then continues to move forward along the Y direction. After passing the detection rod, the spindle box 3131 returns to the original coordinate along the Z direction, and then the probe measures the outer generatrix of the A-axis tail end seat detection rod 332 or the motor seat detection rod 331, and records the Y-axis coordinate as b. At this time, the axis where the tail end seat detection rod 332 or the motor seat detection rod 331 is located, that is, the axis center of the A-axis has a Y-direction coordinate of c=a+(ba).

[0038] S6, installing the cradle group 6 on the third installation platform 23 and pre-adjusting the cradle group 6, obtaining the second installation coordinates of the cradle group 6; adjusting the third installation platform 23 to change the position of the cradle group 6 so that the error between the first installation coordinates and the second installation coordinates is within a preset range: Specifically, the inspection rod is removed, and the cradle assembly 6 is mounted on the third mounting platform 23. The cradle assembly 6 is clamped and mounted between four adjustment brackets 233. The height and level of the cradle assembly 6 can be pre-adjusted by adjusting the bolts 232, and the front and rear swing of the cradle assembly 6 can be adjusted by adjusting the brackets 233. Alternatively, the inspection rod may be left unremoved, and the motor seat 5 and the tail end seat 4 may be moved away from the cradle assembly 6.

[0039] First, preliminarily adjust the height of the cradle group 6 by adjusting the bolt 232. After visually observing a certain height, push the motor seat 5 and the tail end seat 4 toward the cradle group 6 to ensure that the core shaft stoppers of the motor seat 5 and the tail end seat 4 can smoothly penetrate into the stoppers of the cradle group 6. If they cannot enter smoothly, continue to make fine adjustments by adjusting the components.

[0040] like Figure 4 As shown, after the height of the cradle assembly 6 is adjusted, the probe on the main shaft measures four to eight points on the table top of the cradle assembly 6 to determine whether the table is in a horizontal position. If the work table is not horizontal, adjust the adjustment bolts to adjust it. Figure 6 As shown, after the horizontal adjustment of the workbench is completed, the coordinate positions of the two points of the centering hole at the center of the workbench along the Y direction are measured by the probe, and the Y-axis coordinate of the inner point is defined as d, and the coordinate position of the outer point is defined as e. At this time, the Y-axis coordinate of the center of the centering hole and the vertical C-axis rotation center is f=d+(ed), and f is the second installation coordinate. The requirement |cf|≤0.01mm is required. If it is not satisfied, adjust it by adjusting the adjustment screws on the cradle group 6 adjustment bracket 233. Figure 5As shown, after the position of the cradle group 6 is adjusted, four to eight points are measured on the two mounting end faces of the cradle group 6 on the left and right sides of the cradle group 6 by the probe on the main shaft to determine whether the two mounting surfaces are perpendicular to the A axis. If not, they can be adjusted by adjusting the adjustment screws on the adjustment bracket 233. The adjustment in this step needs to take into account the coordinate position of the center of the C-axis in the Y direction, requiring |cf|≤0.01mm.

[0041] Repeat the above process until the table top of the cradle group 6 is in a horizontal state, the two cradle group 6 installation end faces on the left and right sides of the cradle group 6 are perpendicular to the A axis, and the error between the first installation coordinate and the second installation coordinate is within a preset range.

[0042] S7, push the motor base 5 and the tail end base 4 close to the cradle group 6 and assemble them, and remove the third mounting platform 23. Push the first mounting platform 21 and the second mounting platform 22 to move toward the cradle group 6 until the motor base 5 and the tail end base 4 are combined with the cradle group 6, remove the third mounting platform 23, lock the guide rail clamp 7, and power on to perform other functional tests.

[0043] The present invention uses the above-mentioned setting, uses servo drive and high-precision probe to measure the accuracy during the turntable assembly process, replaces manual table pushing and alignment, is convenient and efficient, and can effectively ensure the assembly accuracy of the motor seat 5, the tail end seat 4 and the cradle group 6. When placing the cradle group 6, there is no need to scrape the joint surface, the operation is simple, no complex calculation is required, and the workload is small.

[0044] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A cradle assembly platform, characterized in that: include: A frame (1), wherein a mounting rail (11) is provided on the frame (1), and an extending direction of the mounting rail (11) is a first direction; A mounting structure (2), the mounting structure (2) comprising a first mounting platform (21), a second mounting platform (22) and a third mounting platform (23); the first mounting platform (21) and the second mounting platform (22) are arranged on the mounting guide rail (11) at intervals along a first direction, the first mounting platform (21) is used to mount the tail end seat (4), and the second mounting platform (22) is used to mount the motor seat (5); the third mounting platform (23) is arranged on the frame (1) between the first mounting platform (21) and the second mounting platform (22), and the third mounting platform (23) is used to mount the cradle group (6); A detection structure (3), the detection structure (3) being mounted on the frame (1), the detection structure (3) being used to detect the positional relationship between the tail end seat (4), the motor seat (5) and the cradle assembly (6).

2. The cradle assembly platform according to claim 1, characterized in that: The first mounting platform (21) and the second mounting platform (22) can both be slidably mounted on the mounting guide rail (11); Both ends of the third mounting platform (23) are respectively fixed to the racks (1) on both sides of the mounting rail (11) along a second direction perpendicular to the first direction so that the third mounting platform (23) is straddled on the mounting rail (11).

3. The cradle assembly platform according to claim 2, characterized in that: The third mounting platform (23) comprises: a cradle group supporting platform (231), an adjusting bolt (232) and an adjusting bracket (233); the adjusting bolt (232) is mounted on the cradle group supporting platform (231); four adjusting bolts (232) are provided, the four adjusting bolts (232) are respectively arranged at the corner positions of the cradle group supporting platform (231), and the four adjusting bolts (232) are respectively fixed on both sides of the mounting guide rail (11) along the second direction; a plurality of adjusting brackets (233) are provided, the plurality of adjusting brackets (233) are mounted on the top surface of the cradle group supporting platform (231), and the adjusting brackets (233) are used to install and adjust the cradle group (6).

4. The cradle assembly platform according to claim 1, characterized in that: The detection structure (3) comprises: a driving component (31), a first detection member (32) and a detection component (33); The driving assembly (31) is mounted on the frame (1); The first detection member (32) is suitable for being installed at the output end of the driving component (31); The detection assembly (33) can be mounted on the motor seat (5) and the tail end seat (4).

5. The cradle assembly platform according to claim 4, characterized in that: The detection assembly (33) comprises: a tail end seat detection rod (332) and a motor seat detection rod (331); the tail end seat detection rod (332) is suitable for being coaxially mounted on the tail end seat (4); and the motor seat detection rod (331) is suitable for being coaxially mounted on the motor seat (5).

6. The cradle assembly platform according to claim 5, characterized in that: A guide rail clamp (7) is provided on the mounting guide rail (11).

7. The cradle assembly platform according to any one of claims 1 to 6, characterized in that: An anchor bolt (12) is installed at the bottom end of the frame (1).

8. An assembly method, characterized in that: Using the cradle assembly platform described in any one of claims 1 to 7, the method comprises the following steps: adjusting the upper end surface of the mounting guide rail (11); installing and adjusting the first mounting platform (21), the second mounting platform (22) and the third mounting platform (23); installing the tail end seat (4) on the first mounting platform (21), and installing the motor seat (5) on the second mounting platform (22); adjusting the motor seat (5) and the tail end seat (4), and detecting the first installation coordinates of the rotation axis of the motor seat (5) and the rotation axis of the tail end seat (4) by means of the detection structure (3); installing the cradle group (6) on the third mounting platform (23) and pre-adjusting the cradle group (6) to obtain the second installation coordinates of the cradle group (6); adjusting the third mounting platform (23) to change the position of the cradle group (6) so that the error between the first installation coordinate and the second installation coordinate is within a preset range; The motor seat (5) and the tail end seat (4) are pushed close to the cradle assembly (6) and assembled, and the third mounting platform (23) is removed.

9. The assembly method according to claim 8, characterized in that: The step of "detecting the first installation coordinates of the installation end of the motor seat (5) and the installation end of the tail end seat (4) by means of the detection structure (3)" comprises the following steps: installing a motor seat detection rod (331) on the motor seat (5), adjusting the motor seat detection rod (331) so that the motor seat detection rod (331) and the rotation axis of the motor seat (5) are coaxial; installing a tail end seat detection rod (332) on the tail end seat (4), adjusting the tail end seat detection rod (332) so that the tail end seat detection rod (332) and the main axis of the tail end seat (4) are coaxial; fixing the detection table (333) on the driving component (31), and the driving component (31) drives the detection table (333) to move against the motor seat detection rod (331) or the tail end seat detection rod (332) to measure the coaxiality of the rotation axis of the motor seat (5) and the rotation axis of the tail end seat (4); If the motor seat detection rod (331) and the tail end seat detection rod (332) are coaxial, the driving component (31) drives the first detection member (32) to detect the first installation coordinates of the rotation axis of the motor seat (5) and the rotation axis of the tail end seat (4); If the motor seat detection rod (331) and the tail end seat detection rod (332) are not coaxial, the motor seat (5) and / or the tail end seat (4) are adjusted to make the motor seat detection rod (331) and the tail end seat detection rod (332) coaxial, and then the drive assembly (31) drives the first detection member (32) to detect the first installation coordinates of the motor seat detection rod (331) and the tail end seat detection rod (332).

10. The assembly method according to claim 8, characterized in that: The step of "installing and pre-adjusting the cradle group (6) on the third installation platform (23) to obtain the second installation coordinate of the cradle group (6); adjusting the third installation platform (23) to change the position of the cradle group (6) so that the error between the first installation coordinate and the second installation coordinate is within a preset range" includes the following steps: Clamping and installing the cradle assembly (6) between a plurality of adjustment brackets (233); Adjust the adjusting bolt (232) to adjust the height and level of the cradle assembly (6) until the mandrel stoppers of the motor seat (5) and the tail end seat (4) can be inserted into the stoppers of the cradle assembly (6), and the top work surface of the cradle assembly (6) is in a horizontal state; The driving component (31) drives the first detection component (32) to measure the hole axis coordinate of the positioning hole (61) at the center position of the worktable, which is recorded as the second installation coordinate; The error between the second installation coordinate and the first installation coordinate is determined; if the error between the second installation coordinate and the first installation coordinate is less than or equal to a preset value, no adjustment is required; if the error between the second installation coordinate and the first installation coordinate is greater than the preset value, the adjustment bracket (233) is adjusted to drive the cradle assembly (6) to shift horizontally until the error between the second installation coordinate and the first installation coordinate is less than or equal to the preset value.

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