Movable auxiliary supporting mechanism of long-stroke lead screw for milling machine

Abstract

The invention relates to the technical field of milling machine lead screws, in particular to a long-stroke lead screw movable auxiliary supporting mechanism for a milling machine, which comprises a supporting shell and a control box, the inner side surface of the supporting shell is provided with a supporting driving mechanism for controlling clamping, and the outer side surface of the supporting driving mechanism is provided with an adjustable supporting disc for supporting the radial direction or axis of a lead screw. And a control rod for controlling the supporting height and guaranteeing the coaxiality is arranged on the inner side surface of the control box, a coaxial mechanism for guaranteeing the coaxiality of the lead screw is arranged on the outer side surface of the movable base, the effects of stably clamping the lead screw and facilitating adjustment are achieved, the axis of the clamping roller is parallel to the axis of the lead screw in the clamping mode, and therefore the clamping roller can stably clamp the lead screw. When the lead screw is supported in situ and the axis of the clamping roller is perpendicular to the axis of the lead screw, friction of axis movement is low, and axial movement of the lead screw and adjustment of the supporting position are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of milling machine lead screws, in particular to a long-stroke lead screw movable auxiliary support mechanism for a milling machine. Background Art

[0002] The lead screw of a milling machine is one of the key transmission components of a milling machine. It is usually made of high-precision steel and is shaped like a rod with a spiral groove. The main function of the lead screw is to convert rotational motion into linear motion. When the lead screw rotates, the nut that matches it will move along the axis of the lead screw, thereby driving components such as the workbench or tool to achieve precise linear feed, so as to accurately control the milling depth and feed amount and ensure processing accuracy. The accuracy of the lead screw directly affects the processing quality and efficiency of the milling machine. A high-quality lead screw must have good rigidity, wear resistance and fatigue resistance to adapt to the long-term and high-load processing requirements of the milling machine.

[0003] When moving over long distances, the lead screw needs to be longer, resulting in insufficient rigidity of the lead screw and arbitrary bending without sufficient support.

[0004] When using existing long-stroke screw support mechanisms, the clamping method is usually relatively fixed, making the support position relatively single. In industrial production, processing tasks are diverse. For example, when processing workpieces of different lengths and shapes on large machine tools, the screw needs to be flexibly supported according to different processing positions. However, due to the fixed support position, the existing long-stroke screw support mechanism is difficult to adapt to situations where processing needs to be performed at different axial positions of the screw. For some complex processing processes, different support stiffness or different clamping methods are required at different stroke sections of the screw to ensure processing quality and efficiency. Taking the precision grinding process as an example, a tighter clamping may be required at the starting end of the screw to ensure initial positioning accuracy, moderate support may be required in the middle stroke to take into account processing stability and heat dissipation space, and another clamping method may be required at the end stroke. However, the single clamping method and support position of the existing mechanism cannot be flexibly adjusted to adapt to these diverse process requirements. Summary of the Invention

[0005] The purpose of the present invention is to provide a long-stroke lead screw movable auxiliary support mechanism for a milling machine, so as to solve the problem of the existing lead screw support mechanism proposed in the above background technology that the clamping method is relatively fixed, making the support position relatively single. In order to achieve the above purpose, the present invention provides the following technical solutions: A long-stroke lead screw movable auxiliary support mechanism for a milling machine, comprising a support shell, the top surface of the support shell is fixedly connected to a control box, the bottom surface of the support shell is fixedly connected to symmetrically distributed lifting support rods, the outer surface of the lifting support rods is slidably connected to a movable base, the inner surface of the support shell is provided with a support drive mechanism, the outer surface of the support drive mechanism is provided with an adjustable support plate, the inner surface of the control box is provided with a control rod, and the outer surface of the movable base is provided with a coaxial mechanism.

[0006] Preferably, the support driving mechanism includes an input rod, which is rotatably connected to the inner surface of the support shell, the bottom surface of the input rod is fixedly connected to an input gear, the top surface of the input rod is fixedly connected to an internal meshing gear, the inner surface of the support shell is fixedly connected to a top bracket, the inner surface of the support shell is fixedly connected to a bottom bracket, the outer surfaces of the top bracket and the bottom bracket are both slidably connected to a transverse moving platform, the inner surface of the transverse moving platform is threadedly connected to a threaded fixing rod, one end of the threaded fixing rod is fixedly connected to an output gear, and the outer surface of the transverse moving platform is hingedly connected to a driven push rod.

[0007] Preferably, the input gear is meshed with the output gears on both sides, and the threaded fixing rod is rotatably connected to the inner surface of the support shell.

[0008] The outer surface of the driven pressure block is fixedly connected to the lower pressure cylinder, and the outer surface of the lower pressure cylinder is fixedly connected to the contact protrusion, and the outer surface of the fixed plate is fixedly connected to the mounting bracket, and the inner surface of the mounting bracket is provided with a rotating groove, and the inner surface of the lower pressure cylinder is slidably connected to the driven rotating column.

[0009] Preferably, the number of the arc groove and the direct-acting groove are both three, and the three arc grooves and the three direct-acting grooves are all distributed in a ring around the fixed disk, the movable seat is slidably connected to the arc groove and the direct-acting groove, the number of the movable seat, the rotating seat and the clamping roller are all three and distributed in a ring, both ends of the winding belt are fixedly connected to the electric turntable, the winding belt is wrapped around the outer surface of the electric turntable, the winding belt passes through three driven pressure blocks, the other end of the pressure block spring is fixedly connected to the fixed disk, the lower pressure cylinder is slidably connected to the inner surface of the mounting bracket, the contact protrusion is slidably connected to the rotating groove, the lower pressure cylinder and the driven rotating column are meshed with each other, and the driven rotating column is fixedly connected to the rotating seat.

[0010] Preferably, the control lever includes a control spindle, which is rotatably connected to the inner surface of the support shell and the control box, the bottom surface of the control spindle is fixedly connected to a bevel gear set, the bottom surface of the bevel gear set is fixedly connected to a lifting threaded shaft, the outer surface of the lifting threaded shaft is threadedly connected to a threaded connection seat, the outer surface of the control spindle is rotatably connected to two driven gears, and the outer surfaces of the two driven gears are fixedly connected to driven ratchet grooves, the inner surfaces of the driven ratchet grooves are meshed with meshing ratchet wheels, the inner surface of the control box is slidably connected to a rotating handle, the outer surface of the rotating handle is fixedly connected to a driving gear, the bottom surface of the rotating handle is slidably connected to a handle spring, and the inner surface of the rotating handle is fixedly connected to an inner meshing groove.

[0011] Preferably, the bevel gear set is composed of three meshing bevel gears, the center of the bevel gear set, the center of the clamping roller, the center of the input gear and the center of the output gear are collinear, the threaded connection seat is fixedly connected to the top surface of the movable base, the meshing ratchet is fixedly connected to the control main shaft, and the directions of the two meshing ratchets are opposite, the other end of the handle spring is fixedly connected to the inner surface of the control box, the driving gear is meshed with the driven gear, and the internal meshing groove is meshed with the internal meshing gear.

[0012] Preferably, the coaxial mechanism includes a measuring seat, which is slidingly connected to the outer surface of the movable base, the top surface of the measuring seat is fixedly connected to a lifting limit column, the outer surface of the lifting limit column is slidingly connected to the lifting platform, the outer surface of the supporting shell is provided with a matching slot, the outer surface of the lifting platform is fixedly connected to a mounting beam, one end of the mounting beam is fixedly connected to a centering ring, the outer surface of the centering ring is fixedly connected to the measuring limit column, the outer surface of the mounting beam is slidingly connected to an articulated seat, the outer surface of the articulated seat is hingedly connected to a driven push-pull rod, one end of the driven push-pull rod is hingedly connected to a measuring block, and the outer surface of the measuring block is rotatably connected to a rotating clamp.

[0013] Preferably, the lifting platform is slidably connected to the matching slot, the number of the measuring limit columns and the measuring block are both two, and they are symmetrically distributed at the top and bottom of the centering ring, and the measuring block is slidably connected to the measuring limit columns.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the effect of stable clamping of the screw and easy adjustment is achieved through the cooperation of the supporting drive mechanism and the adjustable support plate. The three movable seats move inward or outward synchronously under the restriction of the arc groove and the linear groove, and the clamping roller stably clamps the screw. In the clamping mode, the axis of the clamping roller is parallel to the axis of the screw, which limits the movement of the axis but has low friction for radial rotation, and supports the screw in place; and when the clamping position needs to be adjusted, the electric turntable reels the belt and presses it down, and the driven pressure block drives the lower pressure cylinder to rotate and drives the clamping roller to rotate ninety degrees, so that the axis of the clamping roller is perpendicular to the axis of the screw. At this time, the friction of the axis movement is low, which is convenient for the axial movement of the screw and the adjustment of the support position.

[0015] In the present invention, the coaxiality of the screw is maintained and the processing accuracy is improved through the cooperation of the centering mechanism and the adjustable support plate. The measuring seat moves and drives the measuring block to align with the inner diameter or outer diameter of the screw base to ensure that the centering ring is coaxial with the center of the screw base. After the mobile base moves back, the height of the adjustable support plate is adjusted by the control rod to make the support position consistent with the center axis of the screw. The adjustable support plate can maintain the coaxiality of the screw when clamping the screw, thereby improving the accuracy and stability of the screw during milling machine processing.

[0016] In the present invention, the control rod and the support drive mechanism cooperate to achieve the effect of conveniently controlling the opening and closing and lifting of the adjustable support plate. The rotating handle controls the opening and closing of the adjustable support plate through the input rod; and when the rotating handle is pressed down or lifted up, the movable base is driven to rise and fall, thereby achieving convenient adjustment of the height of the adjustable support plate and adjustment of the clamping, thereby improving the flexibility and efficiency of the device operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side view schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the mobile base and the coaxial mechanism cooperating with each other in the present invention; Figure 3 It is a schematic side view of the internal structure of the present invention; Figure 4 This is a schematic diagram of the structure of the mutual cooperation of the various components of the support drive mechanism of the present invention; Figure 5 This is a schematic diagram of the structure of the support drive mechanism and the adjustable support plate cooperating with each other in the present invention; Figure 6This is a schematic diagram of the structure of the various components of the adjustable support plate of the present invention cooperating with each other; Figure 7 This is a schematic diagram of the structure in which the rotating disk, the fixed disk, and the movable seat cooperate with each other in the present invention; Figure 8 This is a schematic diagram of the structure of the clamping roller, the driven pressure block, and the lower pressure cylinder cooperating with each other in the present invention; Figure 9 This is a schematic diagram of the structure of the driven pressure block, the lower pressure cylinder, and the driven rotating column cooperating with each other in the present invention; Figure 10 This is a schematic diagram of the structure of the mounting bracket and the rotating groove cooperating with each other in the present invention; Figure 11 A schematic diagram of the structure of the control rod components of the present invention cooperating with each other; Figure 12 For the present invention Figure 11 Enlarged view of point A in the middle; Figure 13 A schematic diagram of the structure of the control rod and the supporting drive mechanism cooperating with each other in the present invention; Figure 14 It is a schematic diagram of the structure of the driven gear, the driven ratchet groove and the meshing ratchet wheel cooperating with each other in the present invention; Figure 15 This is a schematic diagram of the structure of the support housing, the movable base, and the control rod cooperating with each other in the present invention; Figure 16 A schematic diagram of the structure of the coaxial mechanism of the present invention in cooperation with each other; Figure 17 It is a schematic diagram of the structure of the cooperation between the measuring clamp and the rotating clamp of the present invention.

[0018] In the figure: 1. Support shell; 11. Control box; 12. Lifting support rod; 13. Mobile base; 2. Support drive mechanism; 21. Input rod; 211. Input gear; 212. Internal gear; 22. Top bracket; 221. Bottom bracket; 222. Transverse moving platform; 223. Threaded fixing rod; 224. Output gear; 23. Driven push rod; 3. Adjustable support plate; 31. Rotating plate; 311. Arc groove; 32. Fixed plate; 321. Direct-acting groove; 33. Moving seat; 331. Rotating seat; 332. Clamping roller; 34. Electric turntable; 341. Winding belt; 342. Driven pressure block; 343. Pressure block spring; 344. Lower pressure cylinder; 3441. Connecting Contact bump; 345, mounting bracket; 3451, rotating groove; 346, driven rotating column; 4, control lever; 41, control spindle; 42, bevel gear set; 43, lifting threaded shaft; 431, threaded connection seat; 44, driven gear; 441, driven ratchet groove; 442, meshing ratchet; 45, rotating handle; 451, driving gear; 452, handle spring; 453, internal meshing groove; 5, coaxial mechanism; 51, measuring seat; 511, lifting limit column; 52, lifting platform; 521, matching slot; 53, mounting beam; 531, centering ring; 532, measuring limit column; 54, articulated seat; 541, driven push-pull rod; 542, measuring block; 543, rotating clamp. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] See also Figures 1 to 17 The present invention provides a technical solution: a long-stroke screw movable auxiliary support mechanism for a milling machine, comprising a support shell 1, a control box 11 fixedly connected to the top surface of the support shell 1, a symmetrically distributed lifting support rod 12 fixedly connected to the bottom surface of the support shell 1, a movable base 13 slidably connected to the outer surface of the lifting support rod 12, a support drive mechanism 2 provided on the inner surface of the support shell 1, an adjustable support plate 3 provided on the outer surface of the support drive mechanism 2, a control rod 4 provided on the inner surface of the control box 11, and a coaxial mechanism 5 provided on the outer surface of the movable base 13.

[0021] The support drive mechanism 2 includes an input rod 21, which is rotatably connected to the inner surface of the support shell 1, the bottom surface of the input rod 21 is fixedly connected to the input gear 211, the top surface of the input rod 21 is fixedly connected to the internal meshing gear 212, the inner surface of the support shell 1 is fixedly connected to the top bracket 22, the inner surface of the support shell 1 is fixedly connected to the bottom bracket 221, the outer surfaces of the top bracket 22 and the bottom bracket 221 are both slidably connected to a transverse moving platform 222, the inner surface of the transverse moving platform 222 is threadedly connected to a threaded fixing rod 223, one end of the threaded fixing rod 223 is fixedly connected to an output gear 224, and the outer surface of the transverse moving platform 222 is hingedly connected to a driven push rod 23.

[0022] The input gear 211 is meshed with the output gears 224 on both sides, and the threaded fixing rod 223 is rotatably connected to the inner surface of the supporting shell 1; By setting the support drive mechanism 2, during use, the input rod 21 drives the input gear 211 at the bottom to rotate, and the input gear 211 engages with the output gears 224 on both sides, so that the output gears 224 on both sides rotate in opposite directions, and drive the threaded fixing rods 223 on both sides to rotate in opposite directions. The threaded fixing rods 223 on both sides have the same thread rotation direction, and when rotating, they drive the horizontal moving platform 222 to move in opposite directions. Therefore, when the input rod 21 rotates, the horizontal moving platform 222 moves inward or outward at the same time, and the adjustable support plate 3 is pushed by the driven push rod 23 to achieve rotation; The top bracket 22 and the bottom bracket 221 respectively support the top and bottom transverse moving platforms 222 and limit the moving path. The top bracket 22 also supports the input rod 21. The driven push rod 23 can rotate on the surface of the transverse moving platform 222 to adapt to different connection angles after rotating the adjustable support plate 3.

[0023] The adjustable support plate 3 includes a rotating plate 31, which is rotatably connected to the inner surface of the support shell 1. The outer surface of the rotating plate 31 is provided with an arc groove 311. The inner surface of the support shell 1 is fixedly connected to the fixed plate 32. The outer surface of the fixed plate 32 is provided with a direct-acting groove 321. The inner surface of the arc groove 311 is slidably connected to the movable seat 33. One end of the movable seat 33 is rotatably connected to the rotating seat 331. The outer surface of the rotating seat 331 is rotatably connected to the clamping roller 332. The outer surface of the fixed plate 32 is fixedly connected to the electric turntable 34. The outer surface of the disk 34 is fixedly connected with a winding belt 341, the outer surface of the fixed disk 32 is slidably connected with a driven pressure block 342, the outer surface of the driven pressure block 342 is fixedly connected with a pressure block spring 343, the outer surface of the driven pressure block 342 is rotatably connected with a lower pressure cylinder 344, the outer surface of the lower pressure cylinder 344 is fixedly connected with a contact protrusion 3441, the outer surface of the fixed disk 32 is fixedly connected with a mounting bracket 345, the inner surface of the mounting bracket 345 is provided with a rotating groove 3451, and the inner surface of the lower pressure cylinder 344 is slidably connected with a driven rotating column 346.

[0024] The number of the arc groove 311 and the direct-acting groove 321 is three, and the three arc grooves 311 and the three direct-acting grooves 321 are all distributed in a ring around the fixed disk 32, the movable seat 33 is slidably connected to the arc groove 311 and the direct-acting groove 321, the number of the movable seat 33, the rotating seat 331 and the clamping roller 332 are all three and distributed in a ring, both ends of the winding belt 341 are fixedly connected to the electric turntable 34, the winding belt 341 is wrapped around the outer surface of the electric turntable 34, the winding belt 341 passes through the three driven pressure blocks 342, the other end of the pressure block spring 343 is fixedly connected to the fixed disk 32, the lower pressure cylinder 344 is slidably connected to the inner surface of the mounting bracket 345, the contact protrusion 3441 is slidably connected to the rotating groove 3451, the lower pressure cylinder 344 and the driven rotating column 346 are meshed with each other, and the driven rotating column 346 is fixedly connected to the rotating seat 331; When the cam 33 is in the upright position, the cam 332 is in the upright position, and the cam 333 is in the upright position, so that the cam 333 is in the upright position, and the cam 333 is in the upright position, so that the cam 333 is in the upright position, and the cam 333 is in the upright position, so that the cam 333 is in the upright position, and the cam 333 is in the upright position, so that the cam 333 is in the upright position, so that the cam 333 is in the upright position, and the cam 333 is in the upright position, so that the cam 333 is in the upright position, so that the cam 333 is in the upright position, so that the cam 333 is in the upright position, When the clamping position needs to be changed, the electric turntable 34 rotates and rewinds the rewinding belt 341 on the surface. The size of the rewinding belt 341 sleeved on the fixed disk 32 becomes smaller, closer to the fixed disk 32 and presses down the three driven pressure blocks 342, driving the lower pressure cylinder 344 to be pressed down in the mounting bracket 345. The contact protrusion 3441 on the lower pressure cylinder 344 contacts the rotating groove 3451 to form a cylindrical cam, so that the lower pressure cylinder 344 will rotate ninety degrees when pressed down. The lower pressure cylinder 344 and the driven rotating column 346 are connected by a concave and convex groove, which can move laterally and rotate synchronously, so that the lower pressure cylinder 344 and the driven rotating column 346 are still after moving. Keep the connection, and drive the driven rotating column 346 to rotate when the lower pressure cylinder 344 rotates. The driven rotating column 346 drives the rotating seat 331 and the clamping roller 332 to rotate ninety degrees, so that the axes of the three clamping rollers 332 are perpendicular to the axis of the screw. At this time, the friction during the radial rotation of the screw is large, and when the axis moves, there is rolling friction with the clamping roller 332. At this time, the position of the screw or the entire device can be adjusted to facilitate the adjustment of the support position. After the electric turntable 34 returns to its initial state, the driven pressure block 342 drives the lower pressure cylinder 344 to reset under the action of the pressure block spring 343, and the clamping roller 332 returns to the state where the axis is parallel to the axis of the screw.

[0025] The control lever 4 includes a control spindle 41, which is rotatably connected to the inner surface of the support shell 1 and the control box 11. The bottom surface of the control spindle 41 is fixedly connected to a bevel gear set 42, and the bottom surface of the bevel gear set 42 is fixedly connected to a lifting threaded shaft 43. The outer surface of the lifting threaded shaft 43 is threadedly connected to a threaded connection seat 431. The outer surface of the control spindle 41 is rotatably connected to two driven gears 44, and the outer surfaces of the two driven gears 44 are fixedly connected to driven ratchet grooves 441. The inner surfaces of the driven ratchet grooves 441 are meshed with meshing ratchet wheels 442. The inner surface of the control box 11 is slidably connected to a rotating handle 45, and the outer surface of the rotating handle 45 is fixedly connected to a driving gear 451. The bottom surface of the rotating handle 45 is slidably connected to a handle spring 452, and the inner surface of the rotating handle 45 is fixedly connected to an inner meshing groove 453.

[0026] The bevel gear set 42 is composed of three meshing bevel gears. The center of the bevel gear set 42, the center of the clamping roller 332, the centers of the input gear 211 and the output gear 224 are collinear. The threaded connection seat 431 is fixedly connected to the top surface of the movable base 13. The meshing ratchet 442 is fixedly connected to the control main shaft 41, and the two meshing ratchet wheels 442 are in opposite directions. The other end of the handle spring 452 is fixedly connected to the inner surface of the control box 11. The driving gear 451 is meshed with the driven gear 44, and the inner meshing groove 453 is meshed with the inner meshing gear 212. By setting the control lever 4, during use, the opening and closing or lifting and lowering of the adjustable support plate 3 can be controlled by rotating the rotating handle 45. In the initial state, the rotating handle 45 is lifted by the handle spring 452, keeping the inner meshing groove 453 engaged with the inner meshing gear 212. At this time, rotating the rotating handle 45 will drive the inner meshing gear 212 to rotate, and rotate the input rod 21 to control the opening and closing of the adjustable support plate 3. After pressing down or lifting the rotating handle 45, the meshing groove 453 in the rotating handle 45 disengages from the inner meshing gear 212, and drives the outer driving gear 451 to move up or down, and mesh with the upper or lower driven gear 44. The driven gear 44 will not directly drive the control main shaft 41 to rotate, but will first drive The corresponding driven ratchet groove 441 rotates, and then drives the internal meshing ratchet 442 to rotate, and finally the meshing ratchet 442 drives the control spindle 41 to rotate. The upper and lower meshing ratchet wheels 442 are in opposite directions. When the upper driven gear 44 rotates, no matter what the direction is, the meshing ratchet 442 will only rotate in one direction, and the lower meshing ratchet 442 will rotate in the opposite direction. In this way, when the rotating handle 45 is rotated, no matter the rotation direction is forward or reverse, the control spindle 41 will only rotate forward or reverse according to the height position of the rotating handle 45, and drive the bottom lifting threaded shaft 43 to rotate, and through the threaded transmission with the threaded connection seat 431, the lifting threaded shaft 43 is raised and lowered, and the control box 11, the support shell 1 and the internal adjustable support plate 3 are driven to rise and fall; The center of the clamping position of the adjustable support plate 3, the center of the bevel gear set 42, and the centers of the input gear 211 and the output gear 224 are all on the same line. The bevel gear connection is used to keep the rotation of both sides synchronous while leaving a gap in the center for the screw to pass through, thereby adjusting the support position of the screw. The three bevel gears in the bevel gear set 42 are all rotatably connected inside the support housing 1; When the handle 45 is lifted, the driving gear 451 meshes with the driven gear 44 above, the adjustable support plate 3 descends, and the driven gear 44 also descends with the adjustable support plate 3. Even if the arm holding the rotating handle 45 does not follow the descent at this time, the rotating handle 45 will be pulled down by the control box 11, so that the driving gear 451 always remains in a state of meshing with the driven gear 44 above. After the height adjustment is completed, the rotating handle 45 is put down and it will fall onto the handle spring 452 under the influence of gravity and mesh with the internal gear 212 again. The same is true when the rotating handle 45 is pressed down, but the handle spring 452 will be compressed, the adjustable support plate 3 descends and the rotating handle 45 will also be pushed upward by the control box 11 to rise. After the height adjustment is completed, the handle spring 452 drives the rotating handle 45 to reset, so that the opening and closing or lifting and lowering of the adjustable support plate 3 can be controlled respectively by using the different heights of the rotating handle 45.

[0027] The coaxial mechanism 5 includes a measuring seat 51, which is slidingly connected to the outer surface of the movable base 13. The top surface of the measuring seat 51 is fixedly connected with a lifting limit column 511, and the outer surface of the lifting limit column 511 is slidingly connected to the lifting platform 52. A matching slot 521 is provided on the outer surface of the supporting shell 1. The outer surface of the lifting platform 52 is fixedly connected with a mounting beam 53, one end of the mounting beam 53 is fixedly connected with a centering ring 531, and the outer surface of the centering ring 531 is fixedly connected with a measuring limit column 532. The outer surface of the mounting beam 53 is slidingly connected with an articulated seat 54, and the outer surface of the articulated seat 54 is hingedly connected to a driven push-pull rod 541, and one end of the driven push-pull rod 541 is hingedly connected to a measuring block 542, and the outer surface of the measuring block 542 is rotatably connected to a rotating clamp 543.

[0028] The lifting platform 52 is slidably connected to the matching slot 521. There are two measuring limit posts 532 and two measuring blocks 542, which are symmetrically distributed at the top and bottom of the centering ring 531. The measuring blocks 542 are slidably connected to the measuring limit posts 532. Through the setting of the coaxial mechanism 5, during use, the measuring seat 51 can move and drive the entire coaxial mechanism 5 to move. Before the screw needs to be supported, if the screw has been installed, the lifting platform 52 is lifted, and the screw passes through the centering ring 531 and moves to the installation chassis of the screw. If the chassis is a boss, the measuring block 542 is moved outward to exceed the bracket of the boss, and the bottom plane of the rotating clamp 543 is facing the screw chassis. The measuring block 542 is moved inward until the screw chassis is clamped to align the outer diameter of the screw chassis. The upper and lower measuring blocks 542 will pass through the driven The push-pull rod 541 pushes the hinge seat 54 to move on the mounting crossbeam 53, and the angles between the two driven push-pull rods 541 and the mounting crossbeam 53 are always equal. After clamping, the height of the lifting platform 52 is the same as the height of the center of the screw chassis. At this time, the centering ring 531 is coaxial with the screw chassis and the screw. If the screw chassis is in the form of a groove, the measuring clamp 542 is first retracted and placed inside the chassis, and the rotating clamp 543 is rotated to a state where the plane is facing upward. The measuring clamp 542 is pushed to both sides to align with the inner diameter of the screw chassis. Similarly, after tightening, the centering ring 531 is coaxial with the screw chassis and the screw. If the screw is not installed, directly align the measuring block 542 with the inner diameter or outer diameter of the chassis. At this time, the centering ring 531 is coaxial with the center of the screw chassis. After the coaxial adjustment is completed, move the measuring seat 51 back to the movable base 13, and adjust the height of the support shell 1 through the control rod 4 so that the lifting platform 52 can be inserted into the matching slot 521. At this time, the axes of the adjustable support plate 3 and the center of the screw and the screw chassis are all on the same straight line to facilitate supporting the screw.

[0029] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 As shown, each component is installed in the support shell 1 and the control box 11. The lifting of the support shell 1 and the control box 11 drives the adjustable support plate 3 to lift; In this embodiment, Figure 4 、 Figure 5 As shown, the support drive mechanism 2 is installed inside the support housing 1; In this embodiment, Figure 6 、 Figure 7 As shown, the support drive mechanism 2 forms a force couple to drive the adjustable support plate 3 to rotate, thereby achieving a clamping support effect; In this embodiment, Figure 8 、 Figure 9 、 Figure 10 As shown, the driven pressure block 342 presses down to drive the driven rotating column 346 and the clamping roller 332 to rotate; In this embodiment, Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 As shown, the control rod 4 controls the lifting and clamping of the adjustable support plate 3 by controlling the engagement of the gears; In this embodiment, Figure 15 As shown, the adjustable support plate 3 follows the support housing 1 and the control box 11 in the rise and fall. Behind the clamping part of the adjustable support plate 3 is a bevel gear, through which the lead screw can pass directly. In this embodiment, Figure 15 、 Figure 17 As shown, the coaxial mechanism 5 aligns the inner diameter or outer diameter of the screw chassis and the center position to maintain the centering.

[0030] The use method and advantages of the present invention: The long-stroke screw movable auxiliary support mechanism for milling machines has the following working process: like Figures 1 to 17 As shown, when in use, before supporting the lead screw, if there is a lead screw, let the lead screw pass through. Centering ring 531, move measuring seat 51 so that measuring block 542 is at the position of lead screw base, change the mode of measuring inner diameter or outer diameter according to the structure of lead screw base, so as to ensure the centering of centering ring 531 and lead screw, and control the height of adjustable support plate 3 by control rod 4 according to the current length, so that lead screw and support position are coaxial, after the lead screw is installed, control the opening and closing of adjustable support plate 3 by control rod 4, so that clamping roller 332 clamps lead screw, and at this time the axis of clamping roller 332 is parallel to the axis of lead screw, reducing the friction of lead screw during radial rotation, and when the clamping position needs to be changed, electric turntable 34 rewinds winding belt 341 and presses down pressing cylinder 344, so that clamping roller 332 rotates ninety degrees, at this time the friction between lead screw axis and clamping roller 332 is small when moving, so as to facilitate changing support position.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A long-stroke screw movable auxiliary support mechanism for a milling machine, comprising a support shell (1), a control box (11) fixedly connected to the top surface of the support shell (1), symmetrically distributed lifting support rods (12) fixedly connected to the bottom surface of the support shell (1), and a movable base (13) slidably connected to the outer surface of the lifting support rod (12); Its characteristics are: The inner surface of the support shell (1) is provided with a support drive mechanism (2) for controlling clamping, the outer surface of the support drive mechanism (2) is provided with an adjustable support plate (3) for supporting the radial direction or axis of the screw, the inner surface of the control box (11) is provided with a control rod (4) for controlling the support height and ensuring the coaxiality, and the outer surface of the movable base (13) is provided with a coaxial mechanism (5) for ensuring the coaxiality of the screw.

2. The long-stroke lead screw movable auxiliary support mechanism for a milling machine according to claim 1, characterized in that: The support drive mechanism (2) comprises an input rod (21), the input rod (21) being rotatably connected to the inner surface of the support shell (1), the bottom surface of the input rod (21) being fixedly connected to an input gear (211), the top surface of the input rod (21) being fixedly connected to an inner meshing gear (212), the inner surface of the support shell (1) being fixedly connected to a top bracket (22), the inner surface of the support shell (1) being fixedly connected to a bottom bracket (221), the outer surfaces of the top bracket (22) and the bottom bracket (221) being slidably connected to a transverse moving platform (222), the inner surface of the transverse moving platform (222) being threadedly connected to a threaded fixing rod (223), one end of the threaded fixing rod (223) being fixedly connected to an output gear (224), and the outer surface of the transverse moving platform (222) being hingedly connected to a driven push rod (23).

3. The long-stroke lead screw movable auxiliary support mechanism for a milling machine according to claim 2, characterized in that: The input gear (211) is meshed with the output gears (224) on both sides, and the threaded fixing rod (223) is rotatably connected to the inner surface of the supporting shell (1).

4. The long-stroke lead screw movable auxiliary support mechanism for a milling machine according to claim 3, characterized in that: The adjustable support plate (3) includes a rotating plate (31), the rotating plate (31) is rotatably connected to the inner surface of the support shell (1), the outer surface of the rotating plate (31) is provided with an arc groove (311), the inner surface of the support shell (1) is fixedly connected to a fixed plate (32), the outer surface of the fixed plate (32) is provided with a direct-acting groove (321), the inner surface of the arc groove (311) is slidably connected to a movable seat (33), one end of the movable seat (33) is rotatably connected to a rotating seat (331), the outer surface of the rotating seat (331) is rotatably connected to a clamping roller (332), and the outer surface of the fixed plate (32) is fixedly connected to an electric turntable (34). The outer surface of the electric turntable (34) is fixedly connected to a winding belt (341), the outer surface of the fixed disk (32) is slidably connected to a driven pressure block (342), the outer surface of the driven pressure block (342) is fixedly connected to a pressure block spring (343), the outer surface of the driven pressure block (342) is rotatably connected to a lower pressure cylinder (344), the outer surface of the lower pressure cylinder (344) is fixedly connected to a contact protrusion (3441), the outer surface of the fixed disk (32) is fixedly connected to a mounting bracket (345), the inner surface of the mounting bracket (345) is provided with a rotating groove (3451), and the inner surface of the lower pressure cylinder (344) is slidably connected to a driven rotating column (346).

5. The long-stroke lead screw movable auxiliary support mechanism for a milling machine according to claim 4, characterized in that: The number of the arc grooves (311) and the direct-acting grooves (321) is three, and the three arc grooves (311) and the three direct-acting grooves (321) are all distributed in a ring around the fixed disk (32). The movable seat (33) is slidably connected to the arc grooves (311) and the direct-acting grooves (321). The number of the movable seat (33), the rotating seat (331) and the clamping roller (332) is three and distributed in a ring. Both ends of the winding belt (341) are fixedly connected to the electric turntable (34). The winding belt (341) ) is wound around the outer surface of the electric turntable (34), the winding belt (341) passes through three driven pressure blocks (342), the other end of the pressure block spring (343) is fixedly connected to the fixed disk (32), the lower pressure cylinder (344) is slidably connected to the inner surface of the mounting bracket (345), the contact protrusion (3441) is slidably connected to the rotating groove (3451), the lower pressure cylinder (344) and the driven rotating column (346) are engaged with each other, and the driven rotating column (346) is fixedly connected to the rotating seat (331).

6. The long-stroke lead screw movable auxiliary support mechanism for a milling machine according to claim 5, characterized in that: The control rod (4) includes a control spindle (41), the control spindle (41) is rotatably connected to the inner surface of the support shell (1) and the control box (11), the bottom surface of the control spindle (41) is fixedly connected to a bevel gear set (42), the bottom surface of the bevel gear set (42) is fixedly connected to a lifting threaded shaft (43), the outer surface of the lifting threaded shaft (43) is threadedly connected to a threaded connection seat (431), the outer surface of the control spindle (41) is rotatably connected to two driven gears (44), and The outer surfaces of the two driven gears (44) are fixedly connected to driven ratchet grooves (441), the inner surfaces of the driven ratchet grooves (441) are meshed with meshing ratchet wheels (442), the inner surface of the control box (11) is slidably connected to a rotating handle (45), the outer surface of the rotating handle (45) is fixedly connected to a driving gear (451), the bottom surface of the rotating handle (45) is slidably connected to a handle spring (452), and the inner surface of the rotating handle (45) is fixedly connected to an inner meshing groove (453).

7. The long-stroke lead screw movable auxiliary support mechanism for a milling machine according to claim 6, characterized in that: The bevel gear set (42) is composed of three meshing bevel gears. The center of the bevel gear set (42), the center of the clamping roller (332), the input gear (211), and the center of the output gear (224) are collinear. The threaded connection seat (431) is fixedly connected to the top surface of the movable base (13). The meshing ratchet (442) is fixedly connected to the control main shaft (41), and the two meshing ratchet wheels (442) are in opposite directions. The other end of the handle spring (452) is fixedly connected to the inner surface of the control box (11). The driving gear (451) is meshed with the driven gear (44), and the inner meshing groove (453) is meshed with the inner meshing gear (212).

8. The long-stroke lead screw movable auxiliary support mechanism for a milling machine according to claim 7, characterized in that: The coaxial mechanism (5) includes a measuring seat (51), the measuring seat (51) is slidably connected to the outer surface of the movable base (13), the top surface of the measuring seat (51) is fixedly connected to a lifting limit column (511), the outer surface of the lifting limit column (511) is slidably connected to a lifting platform (52), the outer surface of the supporting shell (1) is provided with a matching slot (521), the outer surface of the lifting platform (52) is fixedly connected to a mounting beam (53), and the mounting beam One end of (53) is fixedly connected to a centering ring (531), the outer surface of the centering ring (531) is fixedly connected to a measuring limit column (532), the outer surface of the mounting crossbeam (53) is slidably connected to a hinge seat (54), the outer surface of the hinge seat (54) is hingedly connected to a driven push-pull rod (541), one end of the driven push-pull rod (541) is hingedly connected to a measuring clamp (542), and the outer surface of the measuring clamp (542) is rotatably connected to a rotating clamp (543).

9. The long-stroke lead screw movable auxiliary support mechanism for a milling machine according to claim 8, characterized in that: The lifting platform (52) is slidably connected to the matching slot (521), the number of the measuring limit posts (532) and the measuring block (542) are both two, and they are symmetrically distributed at the top and bottom of the centering ring (531), and the measuring block (542) is slidably connected to the measuring limit posts (532).

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