Numerically controlled machine tool column welding device

Abstract

The present application relates to the field of welding positioning, especially to a numerical control machine tool stand welding device. Technical problem: the traditional method needs to use a crane to hoist the stand body, manually adjust and fix, and then weld; the stand body needs to be tried and adjusted for many times, which is time-consuming and easy to produce errors, affecting the welding quality. A numerical control machine tool stand welding device, comprising a rack, a bottom plate is installed at the lower part of the rack, a feeding mechanism is arranged at the upper part of the rack, and a correction mechanism is arranged on the feeding mechanism. After the machine tool base contacts the correction frame on one side, the side surface of the machine tool base will first contact a protruding correction bead on the correction frame, with the movement of the machine tool base, the machine tool base pushes the correction frame to swing a certain angle, when the correction beads on the protrusions on both sides of the correction frame are in close contact with the side surface of the machine tool base, the position of the machine tool base is used as a reference to adjust the position of the two stand bodies, so that the two stand bodies are aligned with one of the faces on the machine tool base, ensuring the accurate positioning of the welded workpiece and improving the welding precision.

Description

Technical Field

[0001] This invention relates to the field of welding positioning, and more particularly to a welding device for CNC machine tool columns. Background Technology

[0002] The column of a CNC machine tool is usually located in the vertical structure of the machine tool and is an important component that supports and connects other machine tool parts. Its main function is to bear the weight of the bed and worktable and provide stable support for the moving parts of the machine tool.

[0003] Due to the significant weight of the machine tool base and column, the traditional method typically involves using a crane to lift the column to the machine tool base, followed by manual adjustments to ensure alignment. Finally, a specialized tool is used to secure it before welding can begin. Because of the column's weight, the adjustment process often requires multiple trials and corrections, which is not only time-consuming but also prone to alignment errors due to repeated movements, affecting weld quality. Furthermore, manual adjustments introduce uncertainty, easily leading to inaccurate weld placement due to operational deviations, thus affecting weld strength, increasing the workload of subsequent repair welding and grinding, and reducing overall production efficiency. Summary of the Invention

[0004] To overcome the shortcomings of traditional methods, which require crane lifting of the column body followed by manual adjustment and fixing before welding, and which necessitate multiple trials and adjustments of the column body (time-consuming, prone to errors affecting welding quality), manual adjustment is highly uncertain, easily leading to weld deviations, reduced weld strength, increased repair welding and grinding work, and reduced production efficiency, a CNC machine tool column welding device is needed. This device can achieve precise positioning of the column body and automatic fitting with the machine tool base, ensuring alignment between the column body and the machine tool base without repeated manual adjustments, thereby improving welding positioning accuracy and avoiding welding misalignment and weld deviations.

[0005] The technical solution is as follows: A CNC machine tool column welding device includes a frame, a base plate installed at the bottom of the frame, a feed mechanism at the top of the frame, and a correction mechanism installed on the feed mechanism.

[0006] Optionally, the feeding mechanism includes electric sliders, with four electric sliders slidably mounted on the top of the frame. A housing is installed between the four electric sliders, and a lower cover is installed at the bottom of the housing. A hollow rotating shaft is rotatably mounted between the housing and the lower cover. A hexagonal prism is slidably mounted on the hollow rotating shaft. A housing is installed at the lower end of the hexagonal prism. A fixed frame and a hinge seat are installed on both sides of the housing. A movable frame is rotatably mounted on each of the two hinge seats. A torsion spring connects the movable frame and the hinge seat.

[0007] Optionally, the correction mechanism includes a bracket, a bracket installed on one side of the lower cover, a vertical shaft rotatably connected between the box and the lower cover, the lower part of the vertical shaft being rotatably connected to the bracket, a return torsion spring connected between the vertical shaft and the bracket, a correction frame installed at the lower end of the vertical shaft, a sliding frame slidably provided on the box, a main gear installed on the upper part of the vertical shaft, a main rack installed on the sliding frame near the main gear, the main rack meshing with the main gear, a secondary gear installed on the lower part of the hollow rotating shaft, a secondary rack installed on the sliding frame near the secondary gear, the secondary rack meshing with the secondary gear.

[0008] Optionally, a protrusion is provided on both sides of the correction frame, and a correction bead is rolled on each of the two protrusions on the correction frame.

[0009] Optionally, it also includes a lowering mechanism set on the frame and the hexagonal prism. The top of the hexagonal prism is rotatably provided with a mounting seat, and the mounting seat is rotatably provided with two rollers. A guide slot frame is installed on the frame, and each of the two guide slot frames has a guide slot. The two rollers are respectively locked in the two guide slot frames.

[0010] Optionally, each guide groove consists of an upper straight groove, an inclined groove, and a lower straight groove, with two rollers located in the upper straight grooves on the two guide groove frames, respectively.

[0011] Optionally, the system also includes a positioning mechanism mounted on the frame and housing. The positioning mechanism includes an extrusion frame. An arc-shaped groove is formed on the side of the frame near the guide slot frame. The arc-shaped groove is centered on the hollow rotating shaft. An extrusion frame is slidably mounted inside the arc-shaped groove on the frame. Two positioning frames are slidably mounted on the housing. The two positioning frames are symmetrically arranged. A positioning spring is connected between the side of the two positioning frames that are close to each other and the two inner sides of the housing. The extrusion frame has two straight surfaces and two inclined surfaces. The side of the two positioning frames that are close to each other contacts the two straight surfaces on the extrusion frame. A sliding plate is slidably mounted on the lower part of each of the two positioning frames. A movable magnet is mounted on each of the two sliding plates. Two fixed magnets are mounted on one side of the frame. Two antimagnetic springs are connected between the movable magnets and the positioning frames.

[0012] Optionally, the two movable magnets and the two fixed magnets are magnetically opposite on the side that is close to each other, and the two movable magnets and the two fixed magnets attract each other.

[0013] Optionally, it also includes a locking mechanism disposed on the housing and the lower cover. The locking mechanism includes locking screws, two locking screws are threadedly connected to the housing, a locking gear is installed at the top of each of the two locking screws, and two locking racks are installed on the extrusion frame.

[0014] Optionally, it also includes a fixing mechanism disposed on the housing and the extrusion frame. The housing is slidably provided with two sliding blocks, which are symmetrically arranged. The housing is connected by two threaded rods, which are symmetrically arranged. The spirals on the two threaded rods face opposite directions. The ends of the two threaded rods that are far apart from each other are rotatably connected to the two sliding blocks respectively. A torque clutch is installed at the ends of the two threaded rods that are close to each other. A drive gear is installed on each of the two torque clutches. A rack is installed at the bottom of the extrusion frame, and the rack slides through the housing.

[0015] This invention has the following advantages: 1. After one side of the machine tool base contacts the straightening frame, if the side of the machine tool base is not parallel to the straightening frame, the side of the machine tool base will first contact a protruding straightening bead on the straightening frame. As the machine tool base moves, the machine tool base pushes the straightening frame to swing at a certain angle, and the return torsion spring twists accordingly. When the straightening beads on both sides of the straightening frame are in contact with the side of the machine tool base, the machine tool base stops moving. The swing of the straightening frame drives the vertical shaft and the main gear to rotate at a certain angle. The rotation of the main gear drives the main rack, the sliding frame, and the auxiliary rack to move synchronously. The movement of the auxiliary rack drives the auxiliary gear to rotate. The rotation of the auxiliary gear drives the hollow rotating shaft, the hexagonal prism, the housing, and the... The extrusion frame, two fixed frames, two hinged seats, two movable frames, two torsion springs, and two column bodies rotate at a certain angle. Due to the large mass of the machine tool base, its position is difficult to adjust. Therefore, the position of the two column bodies is adjusted based on the position of the machine tool base, so that the two column bodies are aligned with one of the faces on the machine tool base. This ensures accurate positioning of the welded workpiece, improves welding precision, and avoids welding misalignment or weld deviation. The straightening frame automatically adjusts the side position of the machine tool base, so that the welded workpiece is always in the optimal welding position, improving production efficiency, reducing pre-welding adjustment time, and improving the continuity and automation of welding operations.

[0016] 2. Under the action of two positioning springs, the two positioning frames move along the inclined surface of the extrusion frame, driving the two sliding plates to move closer to each other. When the two sliding plates contact the two side walls of the machine tool base respectively, the sliding plates and positioning frames stop moving. The inner side walls of the two positioning frames are on the same vertical plane as the side walls of the machine tool base, ensuring accurate workpiece positioning. At this time, the two locking gears mesh with the two locking racks. The locking gears rotate and drive the two locking screws to move inward. After the locking gears disengage from the locking racks, the locking screws move downward, locking the two positioned positioning frames to prevent positioning deviation and ensure welding stability. At the same time, the two drive gears mesh with the gear blocks on the rack frame, rotating and driving the threaded rod to rotate outward through the torque clutch. The threaded rod drives the sliding block to move outward, pushing the two column bodies outward. When the column bodies contact the positioning frames, The positioning frame and sliding block work together to align two adjacent surfaces of the column body with the adjacent surfaces of the machine tool base, improving welding accuracy, ensuring uniform welds, reducing welding stress concentration, and lowering the risk of welding deformation. After positioning, the drive gear continues to move along the toothed blocks on the rack frame, the torque clutch restricts the rotation of the threaded rod, and after the extrusion frame and rack frame detach from the housing, the roller enters the lower straight groove along the guide groove frame. Under the action of gravity, the roller, mounting base, hexagonal prism, housing, fixed frame, hinged base, movable frame, torsion spring, and column body move towards the machine tool base, ultimately fitting the column body with the machine tool base. This ensures precise welding position, improves welding consistency, and enhances assembly quality. The automatic fitting of the column body with the machine tool base reduces manual adjustments before welding, improves welding efficiency, reduces human error, increases automation, and improves overall production quality and efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the feeding mechanism of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the feeding mechanism and the lowering mechanism of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the feeding mechanism and the correction mechanism of the present invention.

[0021] Figure 5 This is a schematic diagram showing the disassembled structure of some parts of the feeding mechanism, straightening mechanism and lowering mechanism of the present invention.

[0022] Figure 6 This is a schematic diagram showing the disassembled structure of some parts of the feeding mechanism of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the feeding mechanism and positioning mechanism of the present invention.

[0024] Figure 8 This is a three-dimensional structural diagram of the lowering mechanism and the positioning mechanism of the present invention.

[0025] Figure 9 This is a three-dimensional structural diagram of the frame, extrusion frame, and locking rack of the present invention.

[0026] Figure 10 This is a three-dimensional structural diagram of the positioning mechanism and fixing mechanism of the present invention.

[0027] Figure 11 This is a cross-sectional three-dimensional structural diagram of the positioning mechanism and fixing mechanism of the present invention.

[0028] Figure 12 This is a three-dimensional structural diagram of the feeding mechanism, positioning mechanism, and fixing mechanism of the present invention.

[0029] Figure 13 This is a schematic diagram showing the disassembled structure of some parts of the positioning mechanism and fixing mechanism of the present invention.

[0030] Figure 14 This is a three-dimensional structural diagram of the housing, positioning frame, locking screw, and locking gear of the present invention.

[0031] The markings in the attached diagram are as follows: 1: Frame, 2: Base plate, 3: Machine tool base, 4: Column body, 51: Electric slider, 52: Box body, 53: Lower cover, 54: Hollow rotating shaft, 55: Hexagonal prism, 56: Housing, 57: Fixed frame, 58: Hinge seat, 59: Movable frame, 510: Torsion spring, 61: Support, 62: Vertical shaft, 621: Return torsion spring, 63: Correction frame, 64: Sliding frame, 651: Main gear, 652: Main rack. 661: Secondary gear; 662: Secondary rack; 71: Mounting base; 72: Roller; 73: Guide groove frame; 81: Extrusion frame; 82: Positioning frame; 83: Positioning spring; 84: Sliding plate; 85: Movable magnet block; 86: Fixed magnet block; 87: Antimagnetic spring; 881: Locking screw; 882: Locking gear; 883: Locking rack; 91: Sliding block; 92: Threaded rod; 93: Torque clutch; 94: Drive gear; 95: Rack frame. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside used in this text are based solely on the accompanying drawings and are not intended to specifically limit the invention.

[0033] Example 1: A welding device for a CNC machine tool column, such as Figures 1-6As shown, the machine includes a frame 1, a base plate 2 installed at the bottom of the frame 1, a machine tool base 3 placed on the base plate 2, a feed mechanism on the upper part of the frame 1, a column body 4 placed on the supporting component of the feed mechanism, and a correction mechanism provided on the feed mechanism.

[0034] The feeding mechanism includes electric sliders 51. Four electric sliders 51 are slidably mounted on the top of the frame 1. A box 52 is installed between the four electric sliders 51. A lower cover 53 is installed at the bottom of the box 52. A hollow rotating shaft 54 ​​is rotatably mounted between the box 52 and the lower cover 53 via a bearing. A hexagonal prism 55 is slidably mounted on the hollow rotating shaft 54. The hexagonal prism 55 slides up and down along the hollow rotating shaft 54. A housing 56 is installed at the lower end of the hexagonal prism 55. A fixed frame 57 and a hinge seat 58 are installed on both sides of the housing 56. A movable frame 59 is rotatably mounted on each of the two hinge seats 58 via a bearing. A torsion spring 510 is connected between the movable frame 59 and the hinge seat 58. A column body 4 is placed between the fixed frame 57 and the movable frame 59 on the same side.

[0035] The correction mechanism includes a bracket 61, which is mounted on one side of the lower cover 53. A vertical shaft 62 is rotatably connected between the box body 52 and the lower cover 53. The lower part of the vertical shaft 62 is rotatably connected to the bracket 61 via a bearing. A return torsion spring 621 is connected between the vertical shaft 62 and the bracket 61. A correction frame 63 is mounted on the lower end of the vertical shaft 62. A sliding frame 64 is slidably mounted on the box body 52. ​​A main gear 651 is mounted on the upper part of the vertical shaft 62. The sliding frame 64 is located near the main gear. A main rack 652 is installed on one side of 651, and the main rack 652 meshes with the main gear 651. A secondary gear 661 is installed at the lower part of the hollow rotating shaft 54. A secondary rack 662 is installed on the side of the sliding frame 64 near the secondary gear 661, and the secondary rack 662 meshes with the secondary gear 661. The main gear 651 and the secondary gear 661 have the same specifications, including size, number of teeth and tooth pitch. The main rack 652 and the secondary rack 662 have the same size, number of teeth and spacing.

[0036] The corrective frame 63 has a protrusion on each side, and a corrective bead is rolled on each of the two protrusions on the corrective frame 63.

[0037] It also includes a lowering mechanism set on the frame 1 and the hexagonal prism 55. The top of the hexagonal prism 55 is rotatably provided with a mounting base 71. Two rollers 72 are rotatably provided on the mounting base 71 via bearings. A guide slot frame 73 is installed on the frame 1. Each of the two guide slot frames 73 has a guide slot. The two rollers 72 are respectively locked in the two guide slots on the two guide slot frames 73. The two rollers 72 can slide in the guide slots on the two guide slot frames 73, but the two rollers 72 cannot rotate in the guide slots on the two guide slot frames 73.

[0038] Each guide groove consists of an upper straight groove, an inclined groove, and a lower straight groove, with two rollers 72 located in the upper straight grooves on the two guide groove frames 73 respectively.

[0039] The operator first places a column body 4 between the fixed frame 57 and the movable frame 59 on the same side. Then, the machine tool base 3 is moved onto the base plate 2 using a forklift. When one side of the machine tool base 3 contacts the straightening frame 63, if the side of the machine tool base 3 is not parallel to the straightening frame 63, the side of the machine tool base 3 will first contact the straightening ball on one of the protrusions on the straightening frame 63. As the machine tool base 3 moves, it will push the straightening frame 63 to swing at a certain angle, and the return torsion spring 621 will twist accordingly. When the straightening balls on both sides of the straightening frame 63 are in contact with the side of the machine tool base 3, the machine tool base 3 stops moving. The swing of the straightening frame 63 drives the vertical shaft 62 and the main gear 651 to rotate at a certain angle. The rotation of the main gear 651 drives the main gear... The main gear 652, sliding frame 64, and auxiliary rack 662 move synchronously a certain distance. After the auxiliary rack 662 moves, it drives the auxiliary gear 661 to rotate a certain angle. Since the main gear 651 and auxiliary gear 661 have the same specifications, including size, number of teeth, and tooth pitch, and the main rack 652 and auxiliary rack 662 have the same dimensions, number of teeth, and spacing, the rotation angles of the main gear 651 and auxiliary gear 661 are the same. The rotation of auxiliary gear 661 drives the hollow shaft 54, hexagonal prism 55, housing 56, two fixed frames 57, two hinge seats 58, two movable frames 59, two torsion springs 510, and two column bodies 4 to rotate a certain angle. Since the machine tool base 3 has a large mass and is not easy to adjust, the position is adjusted based on the position of the machine tool base 3. The positions of the two column bodies 4 are adjusted so that they are aligned with one of the faces on the machine tool base 3. This ensures accurate positioning of the welded workpiece, improves welding precision, and avoids welding misalignment or weld deviation. Then, the operator activates the four electric sliders 51 to move. The four electric sliders 51 drive the box body 52, lower cover 53, hollow rotating shaft 54, hexagonal prism 55, shell 56, extrusion frame 81, two fixed frames 57, two hinge seats 58, two movable frames 59, two torsion springs 510, bracket 61, vertical shaft 62, return torsion spring 621, straightening frame 63, sliding frame 64, main gear 651, main rack 652, auxiliary gear 661, auxiliary rack 662, mounting base 71, and two rollers 72 to move. The two straightening beads on the straightening frame 63 move. The two column bodies 4 will move along the machine tool base 3. When the two column bodies 4 move above the machine tool base 3, the four electric sliders 51 stop moving. The two rollers 72 move sequentially through the two upper straight grooves and two inclined grooves on the two guide slot frames 73 into the two lower straight grooves. Under the action of gravity, the two rollers 72, mounting base 71, hexagonal prism 55, housing 56, two fixed frames 57, two hinge seats 58, two movable frames 59, two torsion springs 510, and two column bodies 4 move towards the machine tool base 3. After the two column bodies 4 move, they contact the machine tool base 3. Then the operator manually adjusts the position of the two column bodies 4 so that two adjacent faces of each column body 4 are aligned with two adjacent faces on the machine tool base 3.Then the operator welds the two column bodies 4; after the two column bodies 4 are welded, the operator starts the four electric sliders 51 to move in the reverse direction and reset. The four electric sliders 51 drive the box body 52, lower cover 53, hollow rotating shaft 54, hexagonal prism 55, shell 56, two fixed brackets 57, two hinge seats 58, two movable brackets 59, two torsion springs 510, bracket 61, vertical shaft 62, reset torsion spring 621, straightening bracket 63, sliding bracket 64, main gear 651, main rack 652, auxiliary gear 661, auxiliary rack 662, mounting base 71 and two rollers 72 to move in the reverse direction and reset. Because the two column bodies 4 have been welded to the machine tool base 3, the two movable brackets 59 will be blocked by the two column bodies 4 during the movement, and the two movable brackets 59 will swing. The two torsion springs 510 will twist accordingly. When the two movable brackets 59 are separated from the two column bodies 4, under the action of the two torsion springs 510, the two movable brackets 59 will... The machine tool base 3 is then reset by swinging in the opposite direction. The two rollers 72 then move sequentially through the two lower straight grooves and two inclined grooves on the two guide slot frames 73 to the two upper straight grooves. Under the action of the two upper straight grooves, the two rollers 72, mounting base 71, hexagonal prism 55, housing 56, two fixed frames 57, two hinged seats 58, two movable frames 59, two torsion springs 510, and two column bodies 4 move away from the machine tool base 3 and reset. The operator then uses a forklift to remove the welded machine tool base 3 and two column bodies 4 from the base plate 2. After the machine tool base 3 separates from the straightening beads on the straightening frame 63, the straightening frame 63 swings back to reset under the action of the reset torsion spring 621. The straightening frame 63 drives the vertical shaft 62 and the main gear 651 to swing in the opposite direction by a certain angle. The main gear 651 drives the main rack 652, sliding frame 64, and auxiliary rack 662 to move synchronously a certain distance. After the auxiliary rack 662 moves, it drives the auxiliary gear 661 to rotate in the opposite direction by a certain angle.

[0040] Example 2: Based on Example 1, such as Figures 7-14As shown, it also includes a positioning mechanism disposed on the frame 1 and the housing 56. The positioning mechanism includes an extrusion frame 81. An arc-shaped groove is opened on the side of the frame 1 near the guide groove frame 73. The arc-shaped groove is centered on the hollow rotating shaft 54. An extrusion frame 81 is slidably disposed in the arc-shaped groove on the frame 1. Two positioning frames 82 are slidably disposed on the housing 56. Three positioning beads are rolled on the side of each positioning frame 82 that is close to each other. The two positioning frames 82 are symmetrically disposed. The side of each positioning frame 82 that is close to each other is connected to the two inner sides of the housing 56 respectively. One positioning spring 83, both positioning springs 83 are in a compressed state, the extrusion frame 81 is provided with two straight surfaces and two inclined surfaces, the two positioning frames 82 are respectively in contact with the two straight surfaces on the extrusion frame 81 on their respective sides, the lower part of each of the two positioning frames 82 is provided with a sliding plate 84, and a movable magnet block 85 is installed on each of the two sliding plates 84, two fixed magnet blocks 86 are installed on one side of the frame 1, and two antimagnetic springs 87 are connected between the movable magnet block 85 and the positioning frame 82, and five guide beads are rolled on the side of each of the two sliding plates 84 that are close to each other.

[0041] The two movable magnet blocks 85 and the two fixed magnet blocks 86 are magnetically opposite on the side that is close to each other. The two movable magnet blocks 85 and the two fixed magnet blocks 86 attract each other, and the two antimagnetic springs 87 are in a stretched state.

[0042] It also includes a locking mechanism provided on the housing 56 and the lower cover 53. The locking mechanism includes a locking screw 881. Two locking screws 881 are threadedly connected to the housing 56. A locking gear 882 is installed at the top of each of the two locking screws 881. Two locking racks 883 are installed on the extrusion frame 81. After the two locking gears 882 move, they will mesh with the two locking racks 883.

[0043] It also includes a fixing mechanism set on the housing 56 and the extrusion frame 81. The housing 56 is provided with two sliding blocks 91, which are symmetrically arranged. Three balls are rolled on the opposite side of each sliding block 91. The housing 56 is connected by two threaded rods 92, which are symmetrically arranged. The spirals on the two threaded rods 92 face opposite directions. The opposite ends of the two threaded rods 92 are rotatably connected to the two sliding blocks 91. A torque clutch 93 is installed on the opposite ends of the two threaded rods 92. A drive gear 94 is installed on each of the two torque clutches 93. A rack frame 95 is installed at the bottom of the extrusion frame 81. The rack frame 95 slides through the housing 56. Two sets of tooth blocks are provided on the side of the rack frame 95 near the two drive gears 94. After the two sets of tooth blocks on the rack frame 95 move, they will mesh with the two drive gears 94 respectively.

[0044] Initially, the movable magnet 85 is attracted to the fixed magnet 86, and the two sliding plates 84 do not affect the placement of the machine tool base 3. When the housing 56 swings or moves, it will cause the positioning frame 82, positioning spring 83, sliding plate 84, movable magnet 85, antimagnetic spring 87, sliding block 91, threaded rod 92, torque clutch 93, drive gear 94, locking screw 881, and locking gear 882 to swing or move. The housing 56 will only cause the extrusion frame 81 to swing. After the positioning frame 82 and sliding plate 84 swing, they will be parallel to the two sides of the machine tool base 3. After the movable magnet 85 moves and disengages from the fixed magnet 86, under the action of the antimagnetic spring 87, the two sliding plates 84 and the two movable magnets 85 will move closer to the machine tool base 3. When the two positioning frames 82 move along the two inclined surfaces on the extrusion frame 81, under the action of the two positioning springs 83, the two positioning frames 82 and the two sliding plates 84 will move towards each other. When the two sliding plates 84 contact the two side walls on the machine tool base 3 respectively, the two sliding plates 84 and the two positioning frames 82 will stop moving. The inner side walls of the two positioning frames 82 that are close to each other are exactly on the same vertical plane as the two side walls on the machine tool base 3. At this time, the two locking gears 882 mesh with the two locking racks 883. The two locking gears 882 and the two locking screws 881 rotate and move towards the two positioning frames 82. When the two locking gears 882 disengage from the two locking racks 883, the two locking screws 881 move downward and lock. The two positioning frames 82, which have already been positioned, and the two drive gears 94 are now engaged with the two sets of gear blocks on the rack frame 95. The two drive gears 94 rotate, and through the two torque clutches 93, drive the two threaded rods 92 to rotate and move away from each other. The two threaded rods 92 drive the two sliding blocks 91 to move away from each other, which in turn pushes the two column bodies 4 to move away from each other. When the column bodies 4 contact the positioning frames 82, the positioning frames 82 and the sliding blocks 91 work together to align the two adjacent surfaces of the column bodies 4 with the adjacent surfaces of the machine tool base 3, improving welding accuracy, ensuring uniform welds, reducing welding stress concentration, and lowering the risk of welding deformation. When the two sliding blocks 91... After the two positioning frames 82 position the column body 4, the two drive gears 94 continue to move on the two sets of tooth blocks on the rack frame 95. Under the action of the torque clutch 93, the drive gears 94 will not drive the threaded rod 92 to rotate. When the extrusion frame 81 and the rack frame 95 are separated from the housing 56, the two rollers 72 move sequentially through the two upper straight grooves and two inclined grooves on the two guide groove frames 73 to the two lower straight grooves. Under the action of gravity, the two rollers 72, the mounting base 71, the hexagonal prism 55, the housing 56, the two fixed frames 57, the two hinge seats 58, the two movable frames 59, the two torsion springs 510, and the two column bodies 4 move towards the machine tool base 3. After moving, the two column bodies 4 contact the machine tool base 3.The operator can then weld the two pre-aligned and positioned column bodies 4 onto the machine tool base 3. When the housing 56 swings or moves to reset, it will cause the positioning frame 82, positioning spring 83, sliding plate 84, movable magnet block 85, antimagnetic spring 87, sliding block 91, threaded rod 92, torque clutch 93, drive gear 94, locking screw 881, and locking gear 882 to swing or move to reset. The two drive gears 94 will move in opposite directions on the two sets of gear blocks on the rack frame 95. Under the action of the torque clutch 93, the drive gear 94 drives the two threaded rods 92 to rotate and move towards each other through the two torque clutches 93. The two threaded rods 92 drive the two sliding blocks 91 to move towards each other. Upon resetting, the two locking gears 882 mesh with the two locking racks 883. The two locking gears 882 and the two locking screws 881 rotate and move away from the two positioning frames 82. After the two locking gears 882 disengage from the two locking racks 883, the two locking screws 881 move upwards and disengage from the two positioning frames 82. As the two positioning frames 82 move along the two inclined surfaces on the pressing frame 81, the two positioning frames 82 and the two sliding plates 84 move away from each other to reset. The two positioning springs 83 are compressed accordingly. The movable magnet block 85 moves and is attracted by the fixed magnet block 86. The movable magnet block 85 drives the sliding plate 84 to move away from the machine tool base 3, and the anti-magnetic spring 87 is stretched accordingly.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding device for a CNC machine tool column, characterized in that, The machine includes a frame (1), a base plate (2) installed at the bottom of the frame (1), a feeding mechanism at the top of the frame (1), and a correction mechanism on the feeding mechanism; the feeding mechanism includes an electric slider (51), four electric sliders (51) are slidably installed at the top of the frame (1), a box (52) is installed between the four electric sliders (51), a lower cover (53) is installed at the bottom of the box (52), and a hollow rotating shaft (54) is rotatably installed between the box (52) and the lower cover (53); The correction mechanism includes a bracket (61), a bracket (61) installed on one side of the lower cover (53), a vertical shaft (62) rotatably connected between the box body (52) and the lower cover (53), the lower part of the vertical shaft (62) rotatably connected to the bracket (61), a return torsion spring (621) connected between the vertical shaft (62) and the bracket (61), a correction frame (63) installed at the lower end of the vertical shaft (62), and a sliding frame (64) slidably provided on the box body (52). (62) A main gear (651) is installed on the upper part, and a main rack (652) is installed on the side of the sliding frame (64) near the main gear (651). The main rack (652) meshes with the main gear (651). A secondary gear (661) is installed on the lower part of the hollow rotating shaft (54), and a secondary rack (662) is installed on the side of the sliding frame (64) near the secondary gear (661). The secondary rack (662) meshes with the secondary gear (661). The corrector (63) has a protrusion on each side, and a corrector bead is rolled on each of the two protrusions on the corrector (63).

2. The CNC machine tool column welding device according to claim 1, characterized in that, A hexagonal prism (55) is slidably mounted on the hollow rotating shaft (54). A housing (56) is installed at the lower end of the hexagonal prism (55). A fixed frame (57) and a hinge seat (58) are installed on both sides of the housing (56). A movable frame (59) is rotatably mounted on each of the two hinge seats (58). A torsion spring (510) is connected between the movable frame (59) and the hinge seat (58).

3. The CNC machine tool column welding device according to claim 2, characterized in that, It also includes a lowering mechanism set on the frame (1) and the hexagonal prism (55). The top of the hexagonal prism (55) is provided with a mounting base (71) which rotates. Two rollers (72) are provided on the mounting base (71). A guide slot frame (73) is installed on the frame (1). A guide slot is opened on each of the two guide slot frames (73). The two rollers (72) are respectively locked in the two guide slots opened on the two guide slot frames (73).

4. The CNC machine tool column welding device according to claim 3, characterized in that, Each guide groove consists of an upper straight groove, an inclined groove and a lower straight groove, with two rollers (72) located in the upper straight grooves on the two guide groove frames (73) respectively.

5. The CNC machine tool column welding device according to claim 4, characterized in that, It also includes a positioning mechanism set on the frame (1) and the housing (56). The positioning mechanism includes an extrusion frame (81). An arc-shaped groove is opened on the side of the frame (1) near the guide groove frame (73). The arc-shaped groove is centered on the hollow rotating shaft (54). An extrusion frame (81) is slidably provided in the arc-shaped groove on the frame (1). Two positioning frames (82) are slidably provided on the housing (56). The two positioning frames (82) are symmetrically arranged. The side of the two positioning frames (82) that is close to each other is between the two inner sides of the housing (56). Each is connected to a positioning spring (83). The extrusion frame (81) is provided with two straight surfaces and two inclined surfaces. The two positioning frames (82) are close to each other on one side and contact the two straight surfaces on the extrusion frame (81). Each of the two positioning frames (82) is provided with a sliding plate (84) at the bottom. Each of the two sliding plates (84) is equipped with a movable magnet (85). Two fixed magnets (86) are installed on one side of the frame (1). Two antimagnetic springs (87) are connected between the movable magnet (85) and the positioning frame (82).

6. The CNC machine tool column welding device according to claim 5, characterized in that, The two movable magnets (85) and the two fixed magnets (86) are magnetically opposite on the side that is close to each other, and the two movable magnets (85) and the two fixed magnets (86) attract each other.

7. The CNC machine tool column welding device according to claim 6, characterized in that, It also includes a locking mechanism set on the housing (56) and the lower cover (53). The locking mechanism includes a locking screw (881). Two locking screws (881) are threadedly connected to the housing (56). A locking gear (882) is installed at the top of each of the two locking screws (881). Two locking racks (883) are installed on the extrusion frame (81).

8. The CNC machine tool column welding device according to claim 7, characterized in that, It also includes a fixing mechanism set on the housing (56) and the extrusion frame (81). Two sliding blocks (91) are slidably provided on the housing (56). The two sliding blocks (91) are symmetrically arranged. Two threaded rods (92) are threadedly connected to the housing (56). The two threaded rods (92) are symmetrically arranged. The spirals on the two threaded rods (92) face opposite directions. The ends of the two threaded rods (92) that are far apart from each other are rotatably connected to the two sliding blocks (91). A torque clutch (93) is installed on the ends of the two threaded rods (92) that are close to each other. A drive gear (94) is installed on each of the two torque clutches (93). A rack frame (95) is installed at the bottom of the extrusion frame (81). The rack frame (95) slides through the housing (56).

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