Perpendicularity detection equipment suitable for gantry machine tool

Abstract

The invention relates to the technical field of gantry machine tools, in particular to perpendicularity detection equipment suitable for a gantry machine tool, and solves the defects in the prior art, the perpendicularity detection equipment comprises a suspension structure, a balance structure and a detection structure, the suspension structure is provided with a PLC, and the suspension structure is arranged in the middle of a cross beam of the gantry machine tool; the balance structures are rotationally arranged on the two sides of the lower portion of the hanging structure, two positioning assemblies are slidably arranged between the inner side walls of the two opposite sides of each balance structure in the length direction of the balance structure, and two adjusting structures are rotationally arranged between the outer side walls of the two opposite sides of each balance structure. Compared with the prior art, the detection equipment has the advantage that the fixing effect and the detection effect of the detection equipment can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of gantry milling machine technology, and more particularly to a verticality detection device suitable for gantry milling machines. Background Technology

[0002] Gantry milling machines, as high-precision, long-stroke CNC machining equipment, are widely used in the processing of large parts in aerospace, shipbuilding, and heavy machinery industries. Their structure typically consists of key components such as a crossbeam, column, and worktable. During machining, extremely high geometric accuracy must be maintained, especially the perpendicularity error between the crossbeam and the worktable, which directly affects the machining quality of the workpiece. If the perpendicularity exceeds the tolerance, it may lead to workpiece dimensional deviations, deterioration of surface roughness, and even affect assembly accuracy and performance. Perpendicularity testing of gantry milling machines is a crucial step in ensuring their machining accuracy, mainly including the perpendicularity between the crossbeam and column, and the perpendicularity between the spindle and the worktable.

[0003] Chinese patent CN222926214U discloses a verticality detection device for a gantry milling machine, which has the following drawbacks: 1. The movement and adjustment of the L-shaped plates on both sides are achieved by means of threaded transmission, so that the vertical plates attached to the L-shaped plates on both sides are pressed between the columns of the gantry machine tool to achieve a fixed state. However, the fixation method of only two plates may have the problem of not being secure.

[0004] 2. The readings of the level and scale rely on manual observation, which carries the risk of subjective error, especially in poor lighting or when the viewing angle is limited. Moreover, the lower conical block is connected by a rope, which can easily cause shaking and interfere with the readings.

[0005] Therefore, we propose a perpendicularity testing device suitable for gantry milling machines to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a perpendicularity testing device suitable for gantry milling machines, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a verticality detection device suitable for gantry milling machines, comprising a suspension structure, a balancing structure and a detection structure, wherein a PLC controller is provided on the suspension structure and the suspension structure is located at the middle position of the crossbeam of the gantry milling machine. The balancing structure is rotatably mounted on both sides below the suspension structure, and two sets of positioning components are slidably mounted between the inner sidewalls of the opposite sides of the balancing structure along its length direction. Two sets of adjustment structures are rotatably mounted between the outer sidewalls of the opposite sides of the balancing structure, and the positioning components abut against the column sidewall of the gantry machine tool before the adjustment structures. The detection structure is located directly below the suspension structure. The top of the detection structure can make parallel contact with the bottom wall of the crossbeam of the gantry machine tool, while the bottom of the detection structure can make contact with the worktable surface of the gantry machine tool. The total length of the detection structure can be adjusted.

[0008] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. By setting up a suspension structure and a balancing structure, the suspension structure provides a fulcrum for the installation of the overall equipment. Furthermore, an adjustment structure and a positioning component are set on the balancing structure. The overall equipment is first positioned by clamping from both sides. Then, by switching the state of the adjustment structure, it can cooperate with the positioning component to achieve clamping and positioning of the column, thereby effectively improving the fixing effect of the testing equipment.

[0009] 2. By setting a fixed beam, an adjusting beam, a calibration structure, and a feedback structure on the detection structure, the vertical state of the fixed beam and the adjusting beam corresponds to the spindle direction of the gantry milling machine. The top calibration structure can perform balancing when the crossbeam and column of the gantry milling machine are not perpendicular, thus reflecting the vertical deviation based on the change in pressure value on the pressure sensor. The bottom feedback structure can provide mechanical feedback when the spindle direction is not perpendicular to the worktable of the gantry milling machine, thus reflecting the vertical deviation based on the change in distance value on the distance sensor. This effectively improves the detection effect of the verticality of the gantry milling machine. Attached Figure Description

[0010] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0011] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the balancing structure of the present invention and its attached positioning components and adjustment structure; Figure 3 This is a schematic diagram of the detection structure of the present invention; Figure 4 yes Figure 3 A schematic diagram of the main structure (excluding the connecting plate); Figure 5 This is a schematic diagram of the installation of the present invention on a gantry milling machine.

[0012] In the diagram: 1. Suspension structure; 11. Base; 12. Side plate; 13. PLC controller; 2. Balancing structure; 21. Balancing beam; 211. Fixing groove; 212. Bearing ring; 213. Limiting block; 22. Adjusting seat one; 221. Positioning component one; 23. Rack and pinion; 231. Limiting strip; 24. Adjusting gear; 3. Detection structure; 31. Fixing beam; 311. Connecting plate; 312. Lifting motor; 32. Connecting frame; 321. Fixing shaft; 33. Calibration... 331. Preliminary structure; 332. Fixed seat; 333. Fixed arm; 334. Top plate; 335. Positioning plate; 336. Adjusting wheel; 337. U-shaped frame; 338. Piston rod; 34. Pressure sensor; 35. Adjusting beam; 36. Distance sensor; 37. Lifting frame; 38. Sliding block; 39. Fixed bolt; 30. Movable arm; 31. Contact wheel; 32. Connecting handle; 4. Adjustment structure; 41. Adjustment seat two; 42. Rotating arm; 421. Positioning component two. Detailed Implementation

[0013] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0014] like Figure 5As shown, the present invention provides a technical solution: a verticality detection device suitable for a gantry milling machine, comprising a suspension structure 1, a balancing structure 2, a detection structure 3, and an adjustment structure 4. The gantry milling machine includes two vertically arranged columns and a crossbeam fixed between the two columns. The suspension structure 1 is fixed at the middle position of the crossbeam, thereby providing a fulcrum for fixing the detection device. Balancing structures 2 are provided on both sides below the suspension structure 1, and the balancing structures 2 are located between the side walls of the two columns on the same side. Positioning components are also provided between the opposite side walls of the two balancing structures 2. An adjustment structure 4 is also rotatably installed between them. When the adjustment structure 4 is mounted on the crossbeam, it can adjust and fix the positioning components on both sides. After the positioning components are tightened with the column, the adjustment structure 4 can be adjusted to the horizontal direction and cooperate with the positioning components to clamp and fix the column. The detection structure 3 is set in the middle position of the two balance structures 2. The top of the detection structure 3 can be calibrated and connected with the crossbeam of the gantry machine tool, while the bottom of the detection structure 3 can contact the worktable of the gantry machine tool to detect the perpendicularity of the spindle direction of the gantry machine tool to the horizontal direction of the worktable.

[0015] like Figure 1 As shown, the suspension structure 1 includes a base 11, a side plate 12, and a PLC controller 13; The base 11 has a "U" shaped structure. The PLC controller 13 is fixedly installed at the center of the top surface of the base 11. Connecting blocks are fixedly installed on both sides of the base 11. The side plate 12 is fixedly installed on the connecting blocks, and a rotary motor is fixedly installed on one side of the side plate 12.

[0016] like Figure 1 and Figure 2 As shown, the balancing structure 2 includes a balancing beam 21, a positioning assembly, a rack and pinion 23, and an adjusting gear 24; A through hole is provided in the middle of the balance beam 21, and a bearing ring 212 is installed through the through hole. One end of the bearing ring 212 is fixedly installed on the side plate 12. The balance beam 21 and the outer surface of the bearing ring 212 are rotatably fitted. A dovetail-shaped guide groove 1 is provided on the top surface of the balance beam 21 along its length direction, and a straight guide groove 2 is provided on the bottom surface of the balance beam 21 along its length direction. Both guide groove 1 and guide groove 2 are provided in two sets symmetrically about the center of the balance beam 21.

[0017] It should be further explained that after the suspension structure 1 is fixed on the crossbeam of the gantry machine tool, it is not possible to guarantee that the balance beam 21 is parallel to the crossbeam of the gantry machine tool. Therefore, the bearing ring 212 is set so that the balance beam 21 can be kept parallel to the crossbeam of the gantry machine tool after appropriate adjustment.

[0018] The positioning assembly includes an adjusting seat 22 and a positioning element 221. The adjusting seat 22 has an "L" shaped structure. A dovetail-shaped guide block is fixedly connected to the side wall of the adjusting seat 22 that contacts the top surface of the balance beam 21. The guide block slides between the inner walls of the guide groove. Two adjusting seats 22 in the same group are fixedly installed between their opposite side walls. The positioning element 221 is fixedly installed on the roller. The positioning element 221 has an irregular cylindrical structure. The side of the positioning element 221 facing the vertical side wall of the column is flat and the flat surface is frosted.

[0019] On the same balance beam 21, a rack rod 23 is fixedly installed on the opposite side wall of each of the two adjusting seats 22. Limiting strips 231 are fixedly installed on the end wall of each rack rod 23. One rack rod 23 passes through the limiting strip 231 connected to the other rack rod 23 and slides in contact with it. An adjusting gear 24 is meshed between the two rack rods 23 on the same side. The output shaft of the rotary motor passes through the side plate 12 and the bearing ring 212 in sequence and is connected to the adjusting gear 24 to drive it. The output shaft of the rotary motor rotates in cooperation with the inner wall of the bearing ring 212.

[0020] It should be further explained that when adjusting the position of the positioning component 221, the rotary motor is started, which drives the adjusting gear 24 to rotate. This causes the two rack rods 23 meshing with the adjusting gear 24 to move in opposite directions. Under the guidance of all the rack rods 23, the adjusting seats 22 on the two sets of positioning components move synchronously and in opposite directions until the plane of the positioning component 221 contacts the vertical side wall of the column and is tightened. Then the rotary motor is stopped. At this time, the positioning components 221 on both sides, together with the base 11, provide the main positioning support points for the entire testing equipment.

[0021] In addition, in order to better calibrate the level of the balance beam 21 and improve the connection between the positioning component 221 and the column, two additional adjustment structures 4 are provided and installed at the two ends of the balance structure 2 respectively. The adjustment structure 4 includes an adjustment seat 41, a rotating arm 42 and a positioning component 421. The adjusting seat 41 is L-shaped, and a guide block 2 (dovetail-shaped to avoid detachment from the guide groove 2) is fixedly installed on the surface of the adjusting seat 41 that contacts the bottom wall of the balance beam 21. The guide block 2 slides between the inner walls of the guide groove 2 and is driven to reciprocate by a linear motor (the linear motor is installed inside the balance beam 21, not shown in the figure). A rotary motor 2 is fixedly installed on one vertical side wall of the adjusting seat 41. A rotating arm 42 is rotatably installed on the vertical side wall of the adjusting seat 41 facing the balance beam 21. One end of the rotating arm 42 is fixedly installed on the output shaft of the rotary motor 2 and rotates synchronously with it. A roller shaft 2 is detachably installed between the two rotating arms 42. A positioning component 2 421 is fixedly installed on the roller shaft 2. The positioning component 2 421 and the positioning component 1 221 are made of the same material, and the plane of the positioning component 2 421 can face the top or end face of the balance beam 21.

[0022] In addition, a limiting block 213 is fixedly installed on one side wall of the balance beam 21. When the rotating arm 42 is in the horizontal direction, the lower surface of the rotating arm 42 can abut against the top surface of the limiting block 213. Furthermore, fixing grooves 211 are respectively provided at the two ends of the balance beam 21 so that the roller shaft 2 can pass through when moving horizontally.

[0023] It should be further explained that when calibrating the balance beam 21, the testing equipment should be used as follows: Figure 5 The roller shaft 2 and positioning component 2 421 are placed on the gantry milling machine and assembled, with the plane of positioning component 2 421 facing the top surface of the balance beam 21. At this time, the rotating arm 42 is in a vertically upward state. Then, the balance structure 2 is lowered so that the plane of positioning component 2 421 falls on the balance beam 21. When the planes of positioning components 2 421 on both sides fall on the top surface of the balance beam 21, the balance beam 21 is in a horizontal state.

[0024] Subsequently, by starting the first rotary motor, it drives the adjusting gear 24, thereby causing the two rack rods 23 meshing with the adjusting gear 24 to move the adjusting seats 22 on both sides away from each other until the plane of the positioning member 221 comes into contact with the vertical side of the column of the gantry machine tool, at which point the first rotary motor stops.

[0025] Then, by starting the second rotary motor, the rotating arm 42 is rotated 90 degrees to one side, thereby moving the second positioning component 421 to the horizontal direction. The plane of the second positioning component 421 is now facing the end face of the balance beam 21. Next, by starting the linear motor, the guide block 2 is moved along the guide groove 2, thereby synchronously moving the adjustment structure 4 together until the plane of the second positioning component 421 abuts against the other vertical side of the column of the gantry machine tool. At this time, the linear motor is stopped. The first positioning component 221 and the second positioning component 421 abut against the two vertical sides of the column, thereby providing a positioning effect for the balance beam 21.

[0026] In addition, if there is interference from the gantry milling machine when the positioning component 421 rotates from the vertical direction to the horizontal direction, the positioning component 421 and the roller shaft 2 can be disassembled first, and then the positioning component 421 and the roller shaft 2 can be reassembled after the rotating arm 42 is adjusted to the horizontal direction.

[0027] like Figure 1 and Figure 3-4 As shown, the detection structure 3 includes a fixed beam 31, a connecting assembly, a calibration structure 33, an adjusting beam 34, and a feedback structure; The connecting assembly is installed between the opposite side walls of the two balance beams 21. The connecting assembly includes two "U"-shaped connecting frames 32 and a fixed shaft 321. The connecting frames 32 are fixedly installed on the side walls of the balance beams 21, and the adjusting gear 24 is located in the gap between the connecting frames 32 and the balance beams 21. The two ends of the fixed shaft 321 are respectively fixedly installed on the connecting frames 32 on both sides.

[0028] A fixed shaft 321 passes through one end of a fixed beam 31 and is fixed thereto. An inner groove is provided between the inner walls of the fixed beam 31. The inner groove is located above the position through which the fixed shaft 321 passes and has an opening at the top. Furthermore, connecting plates 311 are fixedly installed on both side walls of the fixed beam 31.

[0029] It should be further explained that there is no rotation between the fixed shaft 321 and the connecting frame 32; they are only in a static fixed connection state. The fixed beam 31 is always in the vertical direction, that is, the direction of the fixed beam 31 is consistent with the direction of the gantry machine tool spindle (which is also indirectly equivalent to the direction of the gantry machine tool column). It can be used as a benchmark to check the perpendicularity between the gantry machine tool beam and column, as well as the perpendicularity between the worktable and the spindle direction.

[0030] The calibration structure 33 is positioned above the fixed beam 31, and the calibration structure 33 includes a swinging component, a balancing component, and an adjusting component; The swing component includes a fixed base 331 and two fixed arms 332, both of which are fixedly mounted on the outer surface of the fixed base 331. The longitudinal section of the fixed base 331 is shown below. Figure 4 As shown, its top is flat and the rest is arc-shaped. The two fixed arms 332 are connected at their close ends and are arc-shaped. The arc-shaped surface is adapted to the adjusting wheel 335. A rotary motor 3 is fixedly installed on the side wall of one of the connecting plates 311. A rotating shaft that moves synchronously with it passes through the center of the fixed base 331. The rotating shaft is rotatably arranged between the two connecting plates 311, and one end of the rotating shaft is fixedly installed on the output end of the rotary motor 3 (that is, the rotating shaft is equivalent to the output shaft of the rotary motor 3).

[0031] The balancing component includes a top plate 333 and positioning plates 334. There are two positioning plates 334, and each of them has a contact sensor (not shown in the figure) embedded in the middle of its top surface. The two positioning plates 334 are respectively fixedly installed at the two ends of the top surface of the top plate 333. The top plate 333 is fixedly installed on the top plane of the fixing base 331.

[0032] The adjusting components include an adjusting wheel 335, a U-shaped frame 336, and a piston rod 337. The bottom end of the piston rod 337 is arranged in a "⊥" shape and always slides between the inner walls of the inner groove. The bottom end of the U-shaped frame 336 is fixed to the top end of the piston rod 337, and an adjusting spring is sleeved on the outside of the piston rod 337. The two ends of the adjusting spring are respectively fixed to the bottom surface of the U-shaped frame 336 and the top surface of the fixed beam 31. The adjusting wheel 335 is rotatably connected between the side walls of the U-shaped frame 336 via a shaft. The adjusting wheel 335 can contact and adjust with the side wall surfaces opposite to the two fixed arms 332 and the arc surface formed at their connection.

[0033] Among them, a circular electromagnet is embedded in the middle of the top surface of the fixed beam 31 (that is, between the inner walls of the top opening of the inner groove). The power supply of the electromagnet is set on the other side wall of the fixed beam 31, which is not shown in the figure. The piston rod 337 passes through the electromagnet and can be connected and fixed together with it by attraction. The contact sensors on the positioning plates 334 on both sides of the electromagnet are triggered and start.

[0034] In addition, a pressure sensor 338 is embedded at the bottom of the U-shaped frame 336. The pressure sensor 338 contacts the top of the adjusting spring and detects the magnitude of the pressure applied to it by the adjusting spring.

[0035] It should be further explained that, in order to ensure the perpendicularity between the crossbeam and the column of the gantry milling machine, during adjustment, when one of the positioning pieces 334 of the balancing component comes into contact with the bottom wall of the crossbeam of the gantry milling machine, that is, when there is a certain vertical deviation between the detection structure 3 in the vertical direction and the crossbeam of the gantry milling machine, the rotary motor 3 is started to drive the fixed seat 331 and the fixed arm 332 to rotate and adjust, so that the positioning piece 334 on the other side is also adjusted to the state of contact with the bottom wall of the crossbeam of the gantry milling machine, until both positioning pieces 334 are in contact with the bottom wall of the crossbeam.

[0036] During the driving process of the rotary motor 3, the fixed arm 332 changes angle, which causes the adjusting wheel 335 to be pressed downward under the swinging action of the fixed arms 332 on both sides. This increases the force of the U-shaped frame 336 on the adjusting spring, and conversely, the reaction force of the adjusting spring on the U-shaped frame 336 also increases. Therefore, the value of the pressure sensor 338 increases, which proves that there is a deviation in the perpendicularity between the crossbeam and the column of the gantry machine tool.

[0037] A lifting motor 312 is fixedly installed between the bottom inner walls of the fixed beam 31. The output shaft of the lifting motor 312 is connected and fixed to the top wall of the adjusting beam 34 below. A distance sensor 341 is fixedly installed on one vertical side wall of the adjusting beam 34. Guide grooves 3 are provided on the opposite vertical side walls of the adjusting beam 34 on both sides. The guide grooves 3 are set along the height direction of the adjusting beam 34.

[0038] The feedback structure includes contact components, swing components, and lifting components; The swing component includes a movable arm 36 and a connecting handle 37. A through hole is provided on the connecting handle 37 along its length direction, and a synchronous shaft is connected between one end of the connecting handle 37 and one end of the movable arm 36 (i.e., the connecting handle 37 and the movable arm 36 rotate synchronously for adjustment). The other end of the synchronous shaft is rotatably mounted on the side wall of the adjusting beam 34. A contact element is rotatably mounted between the other ends of the two movable arms 36 via a shaft connection. The contact element should contact the table surface. In this embodiment, the contact element is an adjusting wheel 335. If more precise testing is required, the contact element can be replaced with a pin with a pointed bottom structure. However, the pin must be in the same vertical direction as the movable arm 36 and must not deflect.

[0039] The lifting components include a lifting frame 35, a slider 351, and a fixing bolt 352; The lifting frame 35 is arranged in a "hui" - shaped structure, and guide blocks three are fixedly installed on two opposite inner side walls respectively. The guide blocks three slide between the inner walls of the guide slots three, and the lifting frame 35 slides on the side wall of the adjusting beam 34. Side grooves are formed on two outer side walls of the lifting frame 35. Connecting shafts are fixedly installed along the length direction in the side grooves. Sliders 351 are slidably arranged between the inner walls of the side grooves, and the connecting shafts penetrate through the sliders 351 and are in sliding contact with them. A fixing bolt 352 (cylindrical structure) is fixedly installed in the middle of the surface of the slider 351 facing the outside of the side groove. One end of the fixing bolt 352 always slides between the inner walls of the through - hole of the connecting handle 37.

[0040] Among them, the bottom wall of the lifting frame 35 is arranged opposite to the distance sensor 341.

[0041] It should be further noted that when detecting the verticality, first adjust the balancing member above the fixed beam 31 to make it parallel to the cross - beam of the gantry machine tool. Then, adjust the position of the contact wheel 361. When adjusting, start the lifting motor 312 to drive the adjusting beam 34 to lower until the contact wheel 361 contacts the tabletop of the workbench. During the process of adjusting the position of the contact wheel 361, since both the fixed beam 31 and the adjusting beam 34 are in the vertical direction, and during the process of the contact wheel 361 contacting the workbench, if the lifting frame 35 does not change its position in height, it means that the workbench and the spindle direction of the gantry machine tool are in a perpendicular state at this time. On the contrary, if the workbench and the spindle direction of the gantry machine tool are not in a perpendicular state, it will inevitably cause the movable arm 36 and the connecting handle 37 to deflect during the contact of the contact wheel 361. Thus, under the action of the fixing bolt 352 and the slider 351, the lifting frame 35 will be forced to change its position in height, and the distance value detected by the distance sensor 341 will also change. The vertical deviation between the workbench of the gantry machine tool and the spindle direction can be reflected by the change in the front - and - back distance.

[0042] Then, start the workbench to make it move back and forth left and right continuously on the horizontal plane where it is located to detect whether the entire tabletop of the workbench is perpendicular to the spindle direction of the gantry machine tool. If the value of the distance sensor 341 changes, it means that there is a non - perpendicular area on the tabletop of the workbench with respect to the spindle direction.

[0043] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" 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, an electrical connection, or a connection that can communicate with each other; it can be a direct connection, a connection through the interior of two components, or an interaction relationship between two components. For those of ordinary skill in the art, the meanings of the above terms in the present application can be understood according to specific situations.

[0044] The above provides a detailed description of a verticality detection device for gantry milling machines provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A perpendicularity detection device suitable for a gantry machine tool, comprising: a suspension structure (1) provided with a PLC controller (13) and arranged at a middle position of a beam of the gantry machine tool; characterized in that it further comprises: a balance structure (2) rotatably arranged at both sides below the suspension structure (1), two groups of positioning assemblies slidingly arranged along the length direction between the inner side walls of the opposite sides of the balance structure (2), and two groups of adjusting structures (4) rotatably arranged between the outer side walls of the opposite sides of the balance structure (2), wherein the positioning assemblies are in contact with the side walls of the column of the gantry machine tool before the adjusting structures (4); a detection structure (3) arranged directly below the suspension structure (1), the top of the detection structure (3) being capable of parallel contact with the bottom wall of the beam of the gantry machine tool, the bottom of the detection structure (3) being capable of contact with the table top of the gantry machine tool, and the total length of the detection structure (3) being capable of adjustment.

2. The perpendicularity detection device for a gantry machine tool according to claim 1, wherein The balance structure (2) comprises two balance beams (21) rotatably arranged at both sides of the suspension structure (1), and a limiting block (213) is arranged on one side wall of the balance beam (21) near the edge, and an adjusting gear (24) is arranged on the opposite side wall of the balance beam (21), the top and bottom of the adjusting gear (24) are engaged with a rack rod (23), and the two rack rods (23) are respectively connected and fixed with the positioning assemblies on both sides.

3. The perpendicularity detection device for a gantry machine tool according to claim 1, wherein The positioning assembly comprises a positioning member one (221), and the movement methods of the positioning assemblies on both sides are always opposite; The adjusting structure (4) comprises a positioning member two (421) reciprocating in the vertical and horizontal directions; wherein the positioning member one (221) and the positioning member two (421) are both provided with frosted planes, and the positioning member two (421) can be disassembled and assembled from the adjusting structure (4).

4. The perpendicularity detecting apparatus for a gantry machine tool according to claim 3, wherein When the plane on the positioning member two (421) is in contact with the top surface of the beam of the gantry machine tool, the horizontal degree of the balance structure (2) can be adjusted; When the plane on the positioning member two (421) is opposite to the vertical side surface of the column of the gantry machine tool, the adjusting structure (4) is in the horizontal direction at this time and its bottom wall is in contact with the limiting block (213), and the adjusting structure (4) can be slidingly adjusted along the length direction of the balance structure (2) to be in contact with the vertical side surface of the column of the gantry machine tool.

5. The perpendicularity detection device for a gantry machine tool according to claim 1, wherein The detection structure (3) comprises a fixed beam (31), an adjusting beam (34), and a connecting assembly, the connecting assembly is fixed between the opposite side walls of the two balance beams (21), the fixed beam (31) is arranged on the connecting assembly and always in the vertical direction, the adjusting beam (34) is arranged below the fixed beam (31), and a lifting motor (312) is further arranged between the fixed beam (31) and the adjusting beam (34).

6. A perpendicularity detection device for a gantry machine tool according to claim 5, wherein The upper side of the fixed beam (31) is further provided with a calibration structure (33), the calibration structure (33) comprises a swinging member, a balancing member, and an adjusting member; The opposite side walls of the fixed beam (31) are fixed with vertically arranged connecting plates (311); The swing member is rotatably arranged between the opposite side walls of the two connecting plates (311) through shaft connection; The balancing member is arranged on the top end plane of the swing member, and the balancing member can be kept parallel and in contact with the cross beam of the gantry machine tool; The adjusting member is elastically movably arranged on the top end of the fixed beam (31), and the top of the adjusting member is provided with an adjusting wheel (335), which can realize synchronous adjustment of the height position up and down with the left-right deflection of the swing member, and a pressure sensor (338) is further embedded on the bottom wall of the adjusting member.

7. The perpendicularity detecting apparatus for a gantry machine tool according to claim 5, wherein The fixed beam (31) is further provided with a feedback structure below, which comprises a contact member, a swing member and a lifting member; The swing member is provided with two groups, and each is rotatably arranged on the two side walls of the adjusting beam (34) through shaft connection; The contact member is arranged between the bottom end side walls of the two swing members, and the contact member can be in contact with the workbench surface of the gantry machine tool for testing; The lifting member slides along the length direction of the adjusting beam (34), and a cylindrical fixing bolt (352) is arranged on the lifting member, which can slide along the inner wall of the swing member; A distance sensor (341) is further arranged on the other side wall of the adjusting beam (34), and the distance sensor (341) is arranged opposite to one side bottom wall of the lifting member.

Images