A locking device of a five-axis gantry swing head spindle head

Abstract

The application discloses a locking device of a five-axis gantry swing head spindle head and relates to the technical field of five-axis swing head locking. The locking device comprises a main body shell, a machining table is fixedly connected to the bottom of the main body shell, a horizontal moving module is fixedly connected to the top of the main body shell, a lifting moving module is slidably connected to the horizontal moving module, a lifting frame is slidably connected to the side of the lifting moving module away from the horizontal moving module, a swing head box is rotatably connected to the bottom of the lifting frame, a spindle head is rotatably connected to the inside of the swing head box, a brake module is arranged on the side of the spindle head inside the swing head box, a first locking assembly is arranged on the lifting frame, and a second locking assembly is arranged on the spindle head. The swing head box is locked through the first locking assembly, so that the swing head box is prevented from being accidentally rotated, the risk that workpiece machining deviates due to the accidental rotation of the swing head box is reduced, the spindle head is further locked through the second locking assembly, and the accuracy of workpiece machining is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of five-axis swing head locking, in particular to a locking device of a five-axis gantry swing head spindle head. BACKGROUND

[0002] As a core component of high-end precision manufacturing equipment, the swing head spindle head of the five-axis gantry machining center realizes multi-degree-of-freedom machining through the linkage of A-axis (rotation around X-axis) and C-axis (rotation around Z-axis), and is widely used in complex curved surface machining fields such as aerospace and mold manufacturing. The locking device of the swing head spindle head is a key component to ensure machining accuracy, which rigidly constrains the rotation of the spindle head during machining to prevent position deviation caused by cutting force, vibration and other factors. In the prior art, the locking device of the five-axis swing head spindle head usually adopts a hydraulic brake module to achieve locking by applying pressure to the radial or axial direction of the rotating shaft, for example, by limiting the rotation of the swing head spindle head through the frictional contact between the brake pad and the brake disc.

[0003] However, the existing locking device has the following problems in actual application: the traditional locking device relies on a single braking mechanism, and when the hydraulic system leaks or the electromagnetic coil ages, the locking force decays, causing the swing head spindle head to rotate slightly, which causes the workpiece to be machined to deviate in size during machining, especially in high-precision curved surface machining, a slight deviation can cause the product to be scrapped; as a core component of the load-bearing spindle unit, the swing head spindle head can weigh hundreds of kilograms, and the existing structure is usually connected only through the bottom rotating shaft and the rack, lacking top suspension constraint. Under high-speed rotation or emergency stop conditions, the swing head spindle head is prone to overturning moment, causing the rotating shaft to bear additional bending moment, which can cause shaft deformation or even breakage over a long period of use, posing a safety hazard of the spindle head falling. SUMMARY

[0004] To solve the above technical problems, the present application provides a locking device of a five-axis gantry swing head spindle head.

[0005] The technical scheme is as follows:

[0006] A locking device of a five-axis gantry swing head spindle head, comprising a main body shell, a machining table is fixedly connected to the bottom of the main body shell, a horizontal movement module is fixedly connected to the top of the main body shell, a lifting movement module is slidably connected to the horizontal movement module, a lifting frame is slidably connected to the lifting movement module, a swing head box is rotatably connected to the bottom of the lifting frame, a spindle head is rotatably connected to the inside of the swing head box, a brake module is arranged on one side of the spindle head inside the swing head box, a first locking assembly for locking the swing head box is arranged on the lifting frame, a second locking assembly for locking the spindle head and a third locking assembly for locking the drill bit are arranged on the spindle head.

[0007] The third locking assembly comprises an outer ring sleeve located below the spindle head, an inner ring is rotatably arranged in the inner part of the outer ring sleeve, a support table is fixedly connected to the outer surface of the inner ring, and a rotating ring is rotatably connected to the support table, the bottom of the rotating ring is provided with a row of protruding teeth, the top of the inner ring is fixedly connected with three guide groove frames arranged in an annular array, the inner part of each of the three guide groove frames is slidably connected with a stable block, the side of each of the three stable blocks close to each other is fixedly connected with a pressure sensor, the outer surface of the support table is rotatably connected with a gear meshing with the protruding teeth of the rotating ring, the top of the rotating ring is provided with a flat thread, and the bottom of each of the stable blocks is provided with a thread protrusion matched with the flat thread of the rotating ring.

[0008] Further, the first locking assembly comprises a first fixed frame fixedly connected to the lifting frame, the bottom of the first fixed frame is provided with a track groove, the outer surface of the swing head box is fixedly connected with a second fixed frame, the upper surface of the second fixed frame is fixedly connected with a plurality of support rods arranged in an annular array, the top of each support rod is slidably connected in the inner part of the track groove, at least two fixed plates are fixedly connected to the inner side wall of the lifting frame, two first electric telescopic rods are fixedly connected to each fixed plate, an active plate is fixedly connected to the telescopic shaft of each first electric telescopic rod, and a contact plate is fixedly connected to the end of each active plate away from the fixed plate.

[0009] Further, the cross-sectional shape of the track groove is T-shaped, and the top of each support rod is matched with the shape in the inner part of the track groove.

[0010] Further, the side of the contact plate on each active plate close to the support rod is roughened.

[0011] Further, the contact plate on each active plate is in the shape of a circular arc, and the radius of the circular arc is the same as the radius of the support rod.

[0012] Further, the second locking assembly comprises a socket shaft fixedly connected to the spindle head, a fixed cover is fixedly connected to the outer surface of the swing head box, a first friction plate is fixedly connected to the inner part of the fixed cover, a plug shaft is inserted into the inner part of the socket shaft, a second friction plate is fixedly connected to the end of the plug shaft away from the socket shaft, the second friction plate is located beside the first friction plate, a second electric telescopic rod is fixedly connected to the outer surface of the fixed cover, a connecting disc is fixedly connected to the telescopic shaft of the second electric telescopic rod, a plurality of hook rods arranged in an annular array are fixedly connected to the side of the connecting disc close to the fixed cover, and the end of each hook rod away from the connecting disc hooks the side of the second friction plate close to the socket shaft.

[0013] Further, a through hole is formed in the outer surface of the side of the swing head box close to the fixed cover, the socket shaft is located in the through hole, the inner cavity of the socket shaft is in the shape of a cross, and the shape of the plug shaft is matched with the shape of the socket shaft.

[0014] Further, the second friction plate and the first friction plate are provided with rough surfaces on the sides close to each other, and the fixing cover is provided with a plurality of sliding holes for the plurality of hook rods to slide.

[0015] Further, the third locking assembly further comprises a fixing sleeve fixedly connected to the two sides of the main shaft head, a lifting rod is slidably connected in each of the two fixing sleeves, a fastening bolt is threadedly connected to the outer side of each of the two fixing sleeves, a threaded hole is formed in the outer surface of each of the two fixing sleeves for the fastening bolt to pass through, the two fastening bolts pass through the threaded holes and abut against the two lifting rods, the outer ring sleeve is fixedly connected to the side close to each other of the two lifting rods, and a plurality of rolling balls are connected between the inner ring and the outer ring sleeve.

[0016] As described above, the locking device of the five-axis gantry swing head main shaft head has the following beneficial effects:

[0017] The first locking assembly is used to lock the swing head box, so that the swing head box is prevented from rotating accidentally, the risk of deviation of workpiece machining caused by accidental rotation of the swing head box is reduced, and the accuracy of workpiece machining is ensured.

[0018] The T-shaped track groove and the top of the supporting rod cooperate with each other, so that the supporting rod suspends the swing head box, stabilizes the rotation of the swing head box, and also suspends and supports the swing head box, prevents the swing head box from falling due to excessive weight, avoids damage caused by falling of the swing head box and the main shaft head, and improves the safety of the swing head box and the main shaft head during operation.

[0019] The second locking assembly is used to further lock the main shaft head after the brake module preliminarily locks the main shaft head, so that a layer of locking protection is added, and accidental rotation of the main shaft head is avoided after the brake module fails.

[0020] The third locking assembly is used to further lock the drill bit, so that the safety of workpiece machining using the drill bit is improved, the probability of bending of the drill bit is reduced, the drill bit is prevented from breaking, and the service life of the drill bit is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic view of the overall components of the present application;

[0022] Figure 2 It is a three-dimensional schematic view of the lifting frame, swing head box, main shaft head and other components of the present application;

[0023] Figure 3 It is a three-dimensional schematic view of the lifting frame, fixing plate, first electric telescopic rod and other components of the present application;

[0024] Figure 4 It is a three-dimensional schematic view of the first electric telescopic rod, abutting plate and other components of the present application;

[0025] Figure 5 isometric view of the second locking assembly and other components of the present application;

[0026] Figure 6 isometric view of the second locking assembly and other components of the present application; Figure 5 isometric view of the second locking assembly and other components of the present application;

[0027] Figure 7 isometric view of the second locking assembly and other components of the present application; Figure 5 isometric view of the second locking assembly and other components of the present application;

[0028] Figure 8 isometric view of the second locking assembly and other components of the present application;

[0029] Figure 9 isometric view of the second locking assembly and other components of the present application;

[0030] Figure 10 isometric view of the third locking assembly and other components of the present application;

[0031] Figure 11 isometric view of the third locking assembly and other components of the present application;

[0032] Figure 12 isometric view of the third locking assembly and other components of the present application;

[0033] In the present application, the reference numbers are as follows:

[0034] 1, main body shell; 2, processing table; 3, fixed shell; 4, horizontal movement module; 5, lifting movement module; 6, lifting frame; 7, swing head box; 8, main shaft head; 81, brake module;

[0035] First locking assembly: 91, first fixed frame; 92, track groove; 93, second fixed frame; 94, support rod; 95, fixed plate; 96, first electric telescopic rod; 961, movable plate; 97, abutting plate;

[0036] Second locking assembly: 101, socket shaft; 102, fixed cover; 103, first friction plate; 104, plug shaft; 105, second friction plate; 106, second electric telescopic rod; 107, connecting disc; 108, hook rod;

[0037] Third locking assembly: 111, fixed sleeve; 112, lifting rod; 113, fastening bolt; 114, outer ring sleeve; 115, ball; 116, inner ring; 117, support table; 118, rotating ring; 119, guide groove frame; 1110, stabilizing block; 1111, pressure sensor; 1112, gear; 1113, insertion tube. DETAILED DESCRIPTION

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] The embodiments provided by the present invention will be described in detail below:

[0040] like Figures 1 to 6 As shown, a locking device for a five-axis gantry swing head spindle head includes a main body shell 1. A processing table 2 is fixedly connected to the bottom of the main body shell 1. Two fixed shells 3 are fixedly connected to the top of the main body shell 1. A horizontal moving module 4 is fixedly connected between the two fixed shells 3. A lifting moving module 5 is slidably connected to the horizontal moving module 4. A lifting frame 6 is slidably connected to the side of the lifting moving module 5 away from the horizontal moving module 4. A swing head box 7 is rotatably connected to the bottom of the lifting frame 6. A spindle head 8 is rotatably connected inside the swing head box 7. A brake module 81 is provided on one side of the spindle head 8 inside the swing head box 7. A first locking component is provided on the lifting frame 6 for supporting and locking the swing head box 7.

[0041] It should be noted that the horizontal moving module 4, the lifting moving module 5, the lifting frame 6, the swivel head box 7, the spindle head 8, and the brake module 81 are all existing structures. Specifically, the horizontal moving module 4 can drive the lifting moving module 5 to move horizontally in a straight line, the lifting moving module 5 can drive the lifting frame 6 to move vertically in a straight line, the swivel head box 7 can rotate 360 ​​degrees around the z-axis at the bottom of the lifting frame 6, the spindle head 8 can rotate around the x-axis on the swivel head box 7, and the brake module 81 can restrict the rotation of the spindle head 8, that is, it can lock the angle after the spindle head 8 has rotated. The bottom of the spindle head 8 can be connected to a drill bit.

[0042] The first locking assembly includes a first fixed frame 91 fixedly connected to the lifting frame 6. A ring of track grooves 92 is formed at the bottom of the first fixed frame 91. A second fixed frame 93 is fixedly connected to the outer surface of the swing head box 7. Multiple support rods 94 arranged in a circular array are fixedly connected to the upper surface of the second fixed frame 93. The top of each support rod 94 is slidably connected to the inside of the track groove 92. Two symmetrical fixed plates 95 are fixedly connected to the bottom of the inner wall of the lifting frame 6 by bolts. Two first electric telescopic rods 96 are fixedly connected to the sides of the two fixed plates 95 that are far apart from each other. Movable plates 961 are fixedly connected to the telescopic shafts of the two first electric telescopic rods 96. A stop plate 97 is fixedly connected to the end of each movable plate 961 that is far from the fixed plate 95.

[0043] It should be noted that the cross-sectional shape of the track groove 92 is T-shaped, and the top of each support rod 94 is shaped to match the shape inside the track groove 92, so as to limit the support rod 94 to only be able to slide and not be able to move up and down. The abutting plate 97 on each movable plate 961 is arc-shaped, and the arc of the arc-shaped abutting plate 97 is the same as the arc formed by the support rod 94, so as to match the support rod 94 arranged in a ring array. The movable plate 961 is also arc-shaped, and the arc of the movable plate 961 is the same as the arc formed by the abutting plate 97.

[0044] Specifically, when the workpiece needs to be machined, the worker fixes the workpiece on the machining table 2 through the existing clamp, and then starts the equipment to machine the workpiece. The horizontal movement module 4 drives the lifting movement module 5 to slide horizontally, the lifting movement module 5 drives the lifting frame 6 to move up and down, the swing box 7 rotates 360 degrees at the bottom of the lifting frame 6, and the spindle head 8 can rotate inside the swing box 7. Through the above movements, the drill bit at the bottom of the spindle head 8 machines the workpiece.

[0045] When the swing box 7 rotates, the extension shaft of the first electric telescopic rod 96 does not extend, and at this time the abutting plate 97 does not contact the support rod 94. When the swing box 7 rotates, the swing box 7 drives the second fixed frame 93 to rotate synchronously, and the second fixed frame 93 drives the support rod 94 to rotate synchronously. The top of the support rod 94 will slide inside the track groove 92, and the sliding of the support rod 94 inside the track groove 92 will not affect the normal rotation of the swing box 7. At the same time, under the mutual action of the T-shaped track groove 92 and the top of the support rod 94, the support rod 94 is suspended from the swing box 7, which stabilizes the rotation of the swing box 7 and also suspends and supports the swing box 7, preventing the swing box 7 from falling due to excessive weight, avoiding damage to the swing box 7 and the spindle head 8 caused by falling, and further improving the safety of the swing box 7 and the spindle head 8 during operation.

[0046] After the swing box 7 is rotated to the desired angle and the workpiece is fixed for angular machining, the extension shafts of the two first electric telescopic rods 96 extend to both sides. After the first electric telescopic rod 96 extends, the two movable plates 961 move synchronously to both sides, and the two movable plates 961 drive the abutting plates 97 to abut against the support rods 94. After the abutting plates 97 abut against the support rods 94 tightly, the abutting plates 97 abut against and limit the rotation of the support rods 94, thereby limiting the rotation of the swing box 7. This avoids the swing box 7 from rotating unexpectedly after being braked, reduces the problem of deviation in workpiece machining caused by unexpected rotation, and ensures the accuracy of workpiece machining.

[0047] It should be noted that the side of the abutment plate 97 towards the support rod 94 and the side of the support rod 94 towards the support rod 94 are roughened to increase the surface roughness, thereby enhancing the friction between them and improving the locking effect.

[0048] When it is necessary to release the locking state of the swing box 7, the telescopic shaft of the first electric telescopic rod 96 is retracted, the telescopic shaft of the first electric telescopic rod 96 drives the movable plate 961 to move towards the side close to the fixed plate 95, the movable plate 961 drives the abutment plate 97 to no longer abut against the support rod 94, thereby no longer limiting the support rod 94, and the swing box 7 can be rotated 360 degrees at this time.

[0049] As shown in Figure 5 , Figures 7 to 9 The second locking assembly for further locking the spindle head 8 is arranged on the spindle head 8, and the second locking assembly comprises a socket shaft 101 fixedly connected to the spindle head 8, a fixed cover 102 fixedly connected to the outer surface of the swing box 7 through bolts, a first friction plate 103 fixedly connected to the inside of the fixed cover 102, a plug shaft 104 inserted into the inside of the socket shaft 101, a second friction plate 105 fixedly connected to the end of the plug shaft 104 away from the socket shaft 101, the second friction plate 105 being located beside the first friction plate 103, a second electric telescopic rod 106 fixedly connected to the outer surface of the fixed cover 102, a connecting disc 107 fixedly connected to the telescopic shaft of the second electric telescopic rod 106, and a plurality of hook rods 108 arranged in a ring array on the side of the connecting disc 107 close to the fixed cover 102.

[0050] It should be noted that the side of the swing box 7 close to the fixed cover 102 is provided with a through hole, and the socket shaft 101 is located in the through hole. The internal cavity of the socket shaft 101 is cross-shaped, the shape of the plug shaft 104 is matched with the shape of the socket shaft 101, the plug shaft 104 is inserted into the cross-shaped cavity of the socket shaft 101 and can move linearly along the cross-shaped cavity. The side of the second friction plate 105 and the first friction plate 103 close to each other is provided with a rough surface, so that the friction force can be greater when the first friction plate 103 and the second friction plate 105 abut against each other. A plurality of sliding holes are arranged on the fixed cover 102 for the sliding of the plurality of hook rods 108, the cross section of the hook rod 108 is L-shaped, the end of the hook rod 108 away from the connecting disc 107 hooks the side of the second friction plate 105 close to the socket shaft 101, so that the second friction plate 105 can be effectively pushed towards the first friction plate 103 after the movement of the hook rod 108.

[0051] Specifically, when the spindle head 8 rotates at the bottom of the swing box 7, the second electric telescopic rod 106 is not extended, and when the angle adjustment of the spindle head 8 is completed and the angle needs to be fixed, the brake module 81 starts to lock the spindle head 8 to avoid accidental rotation of the spindle head 8. However, only the brake module 81 is used to lock the spindle head 8, which may cause wear of the brake module 81 during long-term use, thereby causing the brake locking of the spindle head 8 to fail. In order to avoid the above situation, in this embodiment, when the spindle head 8 stops rotating, the second electric telescopic rod 106 is extended, the second electric telescopic rod 106 drives the connecting disc 107 to move away from the fixed cover 102, the connecting disc 107 drives the plurality of hook rods 108 to move synchronously, the end of the hook rod 108 away from the connecting disc 107 abuts and pushes the second friction plate 105, so that the second friction plate 105 moves towards the first friction plate 103, and the second friction plate 105 abuts the first friction plate 103 after moving, so that the second friction plate 105 abutting the first friction plate 103 cannot rotate. The second friction plate 105 cannot rotate, and the spindle head 8 cannot rotate through the cooperation of the shaft 104 and the shaft hole 101, thereby being able to lock when the brake module 81 fails, increasing a layer of locking protection, avoiding accidental rotation of the spindle head 8 after the brake module 81 fails, and improving the stability during workpiece machining.

[0052] In addition, after the spindle head 8 is locked, the hook rod 108 is in a state of pushing the second friction plate 105, and the plurality of hook rods 108 simultaneously push the second friction plate 105, which can ensure that the second friction plate 105 is in uniform contact with the first friction plate 103, and the hook rod 108 and the first friction plate 103 can realize the abutting and clamping effect of the second friction plate 105, thereby improving the locking effect of the second locking assembly on the spindle head 8.

[0053] It should be noted that during the movement of the second friction plate 105, the second friction plate 105 drives the shaft 104 to slide horizontally in the shaft hole 101, and because the shaft 104 and the shaft hole 101 are both cross-shaped, the shaft 104 will not be misaligned during horizontal sliding in the shaft hole 101, and the shaft 104 will not be separated from the shaft hole 101.

[0054] When it is needed to release the locking of the spindle head 8, the telescopic shaft of the second electric telescopic rod 106 is retracted, which drives the connecting disc 107 and the hook rod 108 to move towards the side close to the spindle head 8, and the hook rod 108 no longer pushes and pushes the second friction plate 105. At this time, the second friction plate 105 and the first friction plate 103 are still in contact state but not in close contact, and the spindle head 8 can still be rotated through the insertion hole shaft 101 to drive the insertion shaft 104 to rotate, and the insertion shaft 104 can still drive the second friction plate 105 to rotate, so as not to affect the normal rotation of the spindle head 8.

[0055] As shown in Figure 2 , Figures 10 to 12 The third locking assembly for stabilizing the drill bit is arranged on the spindle head 8, and the third locking assembly comprises two fixed sleeves 111 symmetrically and fixedly connected to the two sides of the spindle head 8 by bolts, one lifting rod 112 slidingly connected in each of the two fixed sleeves 111, one fastening bolt 113 threadedly connected to the outer side of each of the two fixed sleeves 111, and a threaded hole formed in the outer surface of each of the two fixed sleeves 111 and through which the fastening bolt 113 passes. The two fastening bolts 113 respectively abut against the two lifting rods 112 through the threaded holes.

[0056] The two lifting rods 112 are fixedly connected to each other on the side close to each other, and an outer ring sleeve 114 is fixedly connected to the two lifting rods 112. The inner ring 116 is arranged in the inner ring sleeve 114, a plurality of rolling balls 115 in annular array are rotatably connected between the inner ring 116 and the outer ring sleeve 114, a supporting table 117 is fixedly connected to the outer surface of the inner ring 116, and a rotating ring 118 is rotatably arranged on the outer surface of the inner ring 116. Three guide groove frames 119 in annular array are fixedly connected to the top of the inner ring 116, a stable block 1110 is slidingly connected in each of the three guide groove frames 119, a pressure sensor 1111 is fixedly connected to the side close to each other of the three stable blocks 1110, two gears 1112 are rotatably connected to the outer surface of the supporting table 117, and an insertion pipe 1113 is fixedly connected to the end away from the supporting table 117 of each of the two gears 1112.

[0057] It should be noted that the top of the rotating ring 118 is provided with a flat thread, the bottom of the rotating ring 118 is provided with a plurality of protrusions in annular array, the two gears 1112 are engaged with the protrusions of the rotating ring 118, and the bottom of the stable block 1110 is provided with a threaded protrusion matched with the flat thread of the rotating ring 118.

[0058] Specifically, when drilling the workpiece through the spindle head 8, it is necessary to install the drill bit. When installing the drill bit below the spindle head 8, first pass the drill bit through the outer ring sleeve 114, then make the swing head box 7 clamp and install the drill bit, then the worker inserts a tool into the inside of the insertion pipe 1113, rotates the gear 1112, the gear 1112 rotates on the support table 117, the rotation of the gear 1112 drives the rotating ring 118 to rotate on the outer surface of the inner ring 116, the rotation of the rotating ring 118 will make the stable block 1110 slide in the guide groove frame 119 through the threaded convex of the stable block 1110 on the plane thread cooperation, at this time the three stable blocks 1110 will move synchronously to the middle of the inner ring 116, until the three stable blocks 1110 synchronously resist the drill bit, and the three pressure sensors 1111 on the three stable blocks 1110 will also synchronously resist the drill bit, at this time because the three pressure sensors 1111 synchronously resist the drill bit, the pressure values of the three pressure sensors 1111 are the same. By resisting and clamping the drill bit with the stable block 1110, the drill bit can be stabilized, and when the drill bit rotates, the rotation of the drill bit will drive the stable block 1110 to rotate synchronously, the stable block 1110 will drive the guide groove frame 119 and the inner ring 116 to rotate inside the outer ring sleeve 114, the rotation of the inner ring 116 will make the ball 115 rotate inside the outer ring sleeve 114, so as not to affect the normal rotation of the drill bit, so as to realize the stability of the drill bit during machining of the workpiece, avoid the drill bit from breaking due to oblique force, prevent the drill bit from breaking, improve the safety of using the drill bit to machine the workpiece, and reduce the probability of the drill bit bending after being stabilized, and improve the service life of the drill bit.

[0059] In addition, when the drill bit machines the workpiece, the spindle head 8 can rotate at multiple angles on the swing head box 7, so as to realize oblique machining of the workpiece, but during oblique machining, the drill bit is easy to be subjected to non-vertical resistance, which is easy to cause the drill bit to break. When the drill bit is obliquely machined, if the oblique force is too large, the drill bit will bend in the opposite direction, that is, the pressure of the pressure sensor 1111 in the bending direction will increase, and the pressures of the three pressure sensors 1111 will not be evenly distributed. If the pressure value of the pressure sensor 1111 exceeds the threshold value, the controller will control the spindle head 8 to stop running, and control the lifting moving assembly 5 to drive the lifting frame 6 to move upward, and after the lifting frame 6 moves upward, the swing head box 7 drives the spindle head 8 to move upward, the spindle head 8 drives the drill bit to move upward, so that the drill bit no longer resists the workpiece, thereby avoiding excessive non-vertical resistance to the drill bit, and further avoiding the drill bit from breaking.

[0060] It should be noted that, in the process of clamping the drill bit by the stabilizing block 1110, the worker can loosen the fastening bolt 113 before clamping the drill bit by the stabilizing block 1110, that is, the fastening bolt 113 no longer tightly abuts against the lifting rod 112, at this time the worker can pull the two lifting rods 112, so that the lifting rod 112 moves up and down in the inside of the fixed sleeve 111, wherein for the deeper drilling of the workpiece by the drill bit, the lifting rod 112 can be moved upward, the lifting rod 112 drives the outer ring sleeve 114 to move upward synchronously, the outer ring sleeve 114 drives the inner ring 116 to move upward, the inner ring 116 drives the guide groove frame 119 and the stabilizing block 1110 to move upward, the stabilizing block 1110 can be adjusted to a higher clamping position of the drill bit after moving upward, so as to avoid the interference of the workpiece processing by the drill bit after clamping the drill bit stably. Conversely, when the workpiece is drilled shallowly by the drill bit, the lifting rod 112 can be moved downward, that is, the clamping position of the stabilizing block 1110 to the drill bit can be adjusted to be lower, so that the drill bit can be more stably protected. After adjusting the clamping position of the stabilizing block 1110, the fastening bolt 113 is tightened again, so that the fastening bolt 113 tightly abuts against the lifting rod 112 again, so that the lifting rod 112 can be locked in the inside of the fixed sleeve 111.

[0061] The above description is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A locking device of a five-axis gantry swing head spindle head, comprising a main body shell (1), the bottom of the main body shell (1) is fixedly connected with a machining table (2), the top of the main body shell (1) is fixedly connected with a horizontal moving module (4), the horizontal moving module (4) is slidably connected with a lifting moving module (5), the lifting moving module (5) is slidably connected with a lifting frame (6), the bottom of the lifting frame (6) is rotatably connected with a swing head box (7), the inside of the swing head box (7) is rotatably connected with a spindle head (8), one side of the spindle head (8) located inside the swing head box (7) is provided with a brake module (81), characterized in that, The first locking assembly is arranged on the lifting frame (6) and is used for locking the swing head box (7), the second locking assembly is arranged on the main shaft head (8) and is used for locking the main shaft head (8), and the third locking assembly is arranged on the drill head and is used for locking the drill head; The first locking assembly comprises a first fixing frame (91) fixedly connected to the lifting frame (6), a track groove (92) is formed in the bottom of the first fixing frame (91), a second fixing frame (93) is fixedly connected to the outer surface of the swing head box (7), a plurality of support rods (94) are fixedly connected to the upper surface of the second fixing frame (93) in a ring array and are uniformly arranged, the top of each support rod (94) is slidingly connected to the inside of the track groove (92), at least two fixing plates (95) are fixedly connected to the inner side wall bottom of the lifting frame (6), two first electric telescopic rods (96) are fixedly connected to each fixing plate (95), a movable plate (961) is fixedly connected to the telescopic shaft of each first electric telescopic rod (96), and a contact plate (97) is fixedly connected to the end, away from the fixing plate (95), of each movable plate (961). The third locking assembly comprises an outer ring sleeve (114) arranged below the main shaft head (8), an inner ring (116) rotatably arranged in the inner ring sleeve (114), a support table (117) and a rotating ring (118) fixedly connected to the outer surface of the inner ring (116), a plurality of convex teeth arranged on the bottom of the rotating ring (118), three guide groove frames (119) fixedly connected to the top of the inner ring (116) in a ring array, one stable block (1110) slidingly connected to the inside of each guide groove frame (119), a pressure sensor (1111) fixedly connected to the side, close to each other, of each stable block (1110), a gear (1112) rotatably connected to the outer surface of the support table (117) and engaged with the convex teeth of the rotating ring (118), a flat thread arranged on the top of the rotating ring (118), and a threaded protrusion arranged on the bottom of each stable block (1110) and matched with the flat thread of the rotating ring (118). The third locking assembly further comprises two fixed sleeves (111) fixedly connected to the two sides of the main shaft head (8), one lifting rod (112) slidingly connected to the inside of each fixed sleeve (111), one fastening bolt (113) threadedly connected to the outer side of each fixed sleeve (111), a threaded hole formed in the outer surface of each fixed sleeve (111) and through which the fastening bolt (113) passes, and the two fastening bolts (113) respectively abutting against the two lifting rods (112) through the threaded holes.

2. The locking device of a five-axis gantry tilting spindle head according to claim 1, characterized in that, The cross section of the track groove (92) is T-shaped, and the top of each support rod (94) is matched with the shape of the inside of the track groove (92).

3. The locking device of the five-axis gantry tilting spindle head according to claim 1, characterized in that, The side, close to each other, of the contact plate (97) and the support rod (94) is subjected to surface roughening treatment.

4. The locking device of the five-axis gantry tilting spindle head according to claim 1, characterized in that, The abutting plate (97) on each movable plate (961) is in the shape of a circular arc, and the radius of the circular arc is the same as the radius of the support rod (94).

5. The locking device of the five-axis gantry tilting spindle head according to claim 1, characterized in that, The second locking assembly comprises a socket shaft (101) fixedly connected to the main shaft head (8), a fixed cover (102) fixedly connected to the outer surface of the swing head box (7), a first friction plate (103) fixedly connected to the inside of the fixed cover (102), a plug shaft (104) inserted into the inside of the socket shaft (101), a second friction plate (105) fixedly connected to the end of the plug shaft (104) away from the socket shaft (101), the second friction plate (105) being located beside the first friction plate (103), a second electric telescopic rod (106) fixedly connected to the outer surface of the fixed cover (102), a connecting disc (107) fixedly connected to the telescopic shaft of the second electric telescopic rod (106), a plurality of hook rods (108) arranged in a ring array and fixedly connected to the side of the connecting disc (107) close to the fixed cover (102), and the end of the hook rod (108) away from the connecting disc (107) being hooked to the side of the second friction plate (105) close to the socket shaft (101).

6. The locking device of a five-axis gantry tilting spindle head according to claim 5, characterized in that, The side of the swing head box (7) close to the fixed cover (102) is provided with a through hole, the socket shaft (101) is located in the through hole, and the internal cavity of the socket shaft (101) is in the shape of a cross.

7. The locking device of the five-axis gantry tilting spindle head according to claim 5, characterized in that, The side of the second friction plate (105) and the side of the first friction plate (103) close to each other are both provided with rough surfaces, the fixed cover (102) is provided with a plurality of sliding holes for the sliding of the plurality of hook rods (108), and the cross section of the hook rod (108) is in the shape of L.

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