A moving mechanism for an ultra-long machining center

Abstract

The application discloses a moving mechanism for an ultra-long machining center, wherein the top of a base is provided with a mounting platform; a first slide rail group is fixedly arranged on the mounting platform; a moving machining platform is slidably connected with the first slide rail group; a screw rod is fixedly arranged on the mounting platform; a driving nut mechanism is arranged on the moving machining platform and is threadedly matched with the screw rod, and the driving nut mechanism drives the moving platform to move relative to the screw rod by driving rotation; a second slide rail is arranged on the mounting platform; a screw rod supporting mechanism is slidably arranged on the second slide rail, and both ends of the screw rod supporting mechanism are respectively provided with rollers which are supported on the bottom of the screw rod; both ends of the top of the screw rod supporting mechanism are respectively provided with push rods; when the moving machining platform moves, the push rods can be pushed to drive the screw rod supporting mechanism to move along the second slide rail. The screw rod supporting mechanism supports the middle part of the screw rod, so that the problem that the screw rod is bent due to the self weight can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining equipment, and particularly relates to a moving mechanism for an ultra-long machining center. BACKGROUND

[0002] For a workpiece with a length exceeding 5 meters, the workpiece cannot be clamped due to the insufficient length of an ordinary machine tool, and therefore an ultra-long machining center (a machine tool with a length exceeding 5 meters) is usually used to machine the ultra-long workpiece. The spindle of the machine tool needs to be moved to machine each part of the workpiece. At present, the driving of the spindle is mainly achieved by using a screw nut mechanism. The screw nut mechanism is widely used in the moving walking mechanism of a machine tool because of its high driving efficiency and stable performance. However, when the length of the screw rod exceeds 5 meters, the screw rod will naturally bend under the influence of its own weight in the long-term use process because the screw rod has only two ends with support, and thus the machining accuracy of the machine tool gradually decreases and even the normal operation of the machine tool is affected. Therefore, there is an urgent need for a moving mechanism capable of slowing down the bending of the screw rod of an ultra-long machining center. SUMMARY

[0003] The present application aims to provide a moving mechanism for an ultra-long machining center. The moving mechanism can push the screw rod support mechanism to move when the moving machining platform moves, so as to solve the problem that the screw rod of the ultra-long machining center is easy to bend due to the lack of support in the middle.

[0004] To achieve the above purpose, the present application adopts the following technical scheme:

[0005] A moving mechanism for an ultra-long machining center comprises:

[0006] a base, the top of the base is provided with a mounting platform;

[0007] a first slide rail group, the first slide rail group is fixedly arranged on the mounting platform;

[0008] a moving machining platform, the moving machining platform is in sliding connection with the first slide rail group;

[0009] a screw rod, the screw rod is fixedly arranged on the mounting platform;

[0010] a driving nut mechanism, the driving nut mechanism is arranged on the moving machining platform, and the driving nut mechanism is in threaded cooperation with the screw rod. The driving nut mechanism drives the moving platform to move relative to the screw rod by being actively rotated;

[0011] a second slide rail, the second slide rail is arranged on the mounting platform;

[0012] The screw rod supporting mechanism is slidingly installed on the second sliding rail, and two ends of the screw rod supporting mechanism are respectively provided with rollers which are supported on the bottom of the screw rod; the top of the two ends of the screw rod supporting mechanism is respectively provided with a push rod; when the moving machining platform moves, the push rod can be pushed to move the screw rod supporting mechanism along the second sliding rail.

[0013] Preferably, the screw rod supporting mechanism further comprises a connecting rod and a supporting seat provided at two ends of the connecting rod, and the rollers are respectively rotationally connected to the supporting seat; the bottom of the supporting seat is slidingly connected to the second sliding rail; the push rod and / or the moving machining platform is provided with a buffer block.

[0014] Preferably, the supporting seat comprises a sliding block and a seat body assembly symmetrically provided at two sides of the sliding block.

[0015] The sliding block is slidingly installed on the second sliding rail.

[0016] The seat body assembly comprises a mounting seat and a height adjusting block which is detachably installed on the mounting seat.

[0017] The top of the mounting seat is provided with a groove, one side of the groove is a slope, the other side of the groove is provided with a threaded adjusting hole penetrating through, and the threaded adjusting hole is provided with an adjusting screw.

[0018] The height adjusting block comprises an adjusting portion, the bottom surface of the adjusting portion is provided with a protrusion, and one side of the protrusion is provided with a slope which is matched with the slope of the groove.

[0019] The roller is rotationally connected to the height adjusting block.

[0020] Preferably, the height adjusting block further comprises a connecting portion which is provided at one side of the adjusting portion.

[0021] The supporting seat further comprises a connecting cross rod, one end of the connecting cross rod is connected with the connecting portion, and the other end of the connecting cross rod is connected with the connecting rod; the push rod is provided at the top of the end of the connecting cross rod which is away from the connecting portion.

[0022] Preferably, the driving nut mechanism comprises a motor, a connecting seat and a nut assembly, the motor and the connecting seat are fixedly provided on the moving machining platform, the connecting seat is a cylindrical structure, the nut assembly is rotationally connected to the inside of the connecting seat; the nut assembly is sleeved on the outside of the screw rod and is threadedly connected with the screw rod; the motor is drivingly connected with the nut assembly.

[0023] Preferably, the nut assembly comprises a sleeve, a nut and a bearing, the sleeve and the nut are sleeved on the outside of the lead screw, and the nut is fixedly connected with one end of the sleeve; the nut is threadedly connected with the lead screw, and the inner wall of the sleeve is suspended on the outer wall of the lead screw; the bearing is arranged between the sleeve and the connecting seat; the motor is drivingly connected with the other end of the sleeve.

[0024] Preferably, the motor is drivingly connected with the sleeve through a synchronous belt or a gear.

[0025] Preferably, the connecting rods are two, and the connecting rods are symmetrically arranged on both sides of the supporting seat.

[0026] Preferably, the middle part of the mounting platform is recessed to form a mounting groove, the mounting groove extends along the length direction of the base, and the second sliding rail is arranged in the mounting groove.

[0027] Preferably, the ratio of the distance between the two rollers of the lead screw supporting mechanism to the length of the lead screw is 1:3-2:3.

[0028] The beneficial effect of one embodiment of the present application is that the lead screw supporting mechanism is arranged to support the middle part of the lead screw, the lead screw supporting mechanism is slidingly mounted on the mounting platform through the second sliding rail, that is, the lead screw supporting mechanism can reciprocate along the second sliding rail on the mounting platform, the lead screw supporting mechanism supports the lead screw through the rollers arranged at both ends, since the lead screw is fixedly arranged, the lead screw will not rotate when driving the moving machining platform to move, so the lead screw will not slide and rub with the rollers due to its rotation, which can reduce the wear of the rollers and the loss of power. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings further illustrate the present application, but the contents in the drawings do not constitute any limitation on the present application.

[0030] Figure 1 is a schematic diagram of the three-dimensional structure of one embodiment of the present application;

[0031] Figure 2 is a schematic diagram of the three-dimensional structure of one embodiment of the present application; Figure 1

[0032] Figure 3 is a schematic diagram of the three-dimensional structure of one embodiment of the present application; Figure 1

[0033] Figure 4 is a schematic diagram of the structure of the driving nut mechanism and the lead screw supporting mechanism of one embodiment of the present application;

[0034] Figure 5 ​​is an exploded structural schematic view of a support seat of one embodiment of the present application;

[0035] Figure 6 is a sectional structural schematic view of a drive nut mechanism of one embodiment of the present application;

[0036] In the drawings: 1 - base, 11 - mounting platform, 111 - mounting groove, 2 - first slide rail group, 3 - moving machining platform, 4 - lead screw, 5 - drive nut mechanism, 51 - motor, 52 - connecting seat, 53 - nut assembly, 531 - sleeve, 532 - nut, 533 - bearing, 6 - second slide rail, 7 - lead screw support mechanism, 71 - roller, 72 - push rod, 73 - connecting rod, 74 - support seat, 75 - sliding block, 76 - seat body assembly, 761 - mounting seat, 7611 - groove, 7612 - threaded adjusting hole, 762 - height adjusting block, 7621 - adjusting part, 7622 - connecting part, 7623 - protrusion, 7624 - slope, 77 - connecting cross bar, 8 - buffer block. DETAILED DESCRIPTION

[0037] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and letters throughout the drawings denote the same or like elements or elements having the same or similar function. The embodiments described below are examples of implementations of the present application and are not intended to limit the scope of the present application. In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0038] In the description of the application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0039] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0040] The following disclosure provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the application, the components and arrangements of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the application. In addition, the application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0041] The technical solutions of the application are further illustrated below by specific embodiments in conjunction with the drawings.

[0042] A moving mechanism for an ultra-long machining center according to the present embodiment is shown in Figures 1-6 and includes:

[0043] A base 1, the top of which is provided with a mounting platform 11;

[0044] A first slide rail group 2, which is fixedly arranged on the mounting platform 11;

[0045] A moving machining platform 3, which is in sliding connection with the first slide rail group 2;

[0046] A screw rod 4 is fixedly arranged on the mounting platform 11;

[0047] A drive nut mechanism 5 is mounted on the moving machining platform 3 and is in threaded cooperation with the screw rod 4. The drive nut mechanism 5 is driven to rotate to drive the moving platform to move relative to the screw rod 4.

[0048] A second slide rail 6 is mounted on the mounting platform 11;

[0049] A screw rod supporting mechanism 7 is slidingly arranged on the second slide rail 6. Two ends of the screw rod supporting mechanism 7 are respectively provided with rollers 71 which are supported on the bottom of the screw rod 4. The top of the screw rod supporting mechanism 7 is respectively provided with push rods 72. When the moving machining platform 3 moves, the push rods 72 can be pushed to drive the screw rod supporting mechanism 7 to move along the second slide rail 6.

[0050] The mobile machining platform 3 is slidably installed on the mounting platform 11 on the top of the base 1 through the first slide rail group 2, and is used for carrying a machining spindle. The mobile machining platform 3 can drive the spindle to a position where the workpiece needs to be machined by reciprocating along the first slide rail group 2. Specifically, in order to enable the mobile machining platform 3 to move more stably, the first slide rail group 2 is provided as at least two parallel slide rails, and the extension direction of the first slide rail group 2 is the same as the length direction of the base 1, so that the mobile machining platform 3 can reciprocate along the length direction of the base 1 to drive the spindle carried on the mobile machining platform 3 to any position in the length direction of the base 1, thereby realizing the machining of the super-long workpiece. In order to provide the mobile machining platform 3 with driving force for reciprocating movement, the present application adopts the driving mode of a screw nut. Different from the traditional screw nut mechanism, the present application adopts a fixed arrangement of a screw rod 4, and provides the mobile machining platform 3 with driving force by rotating the driving nut mechanism 5. Specifically, the screw rod 4 is fixedly arranged on the mounting platform 11, and the extension direction of the screw rod 4 is the same as the extension direction of the first slide rail group 2. The driving nut mechanism 5 is installed on the mobile machining platform 3, and is threadedly connected with the screw rod 4. The driving nut mechanism 5 can be actively rotated, and can realize the effect of reciprocating along the extension direction of the screw rod 4 by forward rotation and reverse rotation, thereby providing the mobile machining platform 3 with driving force for reciprocating movement along the first slide rail group 2.In order to enable the mobile machining platform 3 to move to any position in the length direction of the base 1, the drive nut mechanism 5 needs to be able to move to any position of the lead screw 4, therefore the middle part of the lead screw 4 cannot have any fixed support point, otherwise it will cause obstruction to the drive nut mechanism 5 when moving along the lead screw 4, however, if the support is only provided at both ends of the lead screw 4, for an ultra-long machining platform exceeding 5 meters, the lead screw 4 will slowly bend under the influence of its own weight over time; in order to solve this problem, the application innovatively provides the lead screw supporting mechanism 7, specifically, the lead screw supporting mechanism 7 is slidably installed on the mounting platform 11 through the second sliding rail 6, that is, the lead screw supporting mechanism 7 can reciprocate along the second sliding rail 6 on the mounting platform 11, the lead screw supporting mechanism 7 supports the lead screw 4 through the rollers 71 arranged at both ends, it should be pointed out that the lead screw 4 of the application is fixedly arranged, therefore the lead screw 4 will not rotate when driving the mobile machining platform 3 to move, therefore the lead screw 4 will not slide and rub with the rollers 71 due to its own rotation, which can not only reduce the wear of the rollers 71, but also reduce the loss of power; in actual use, the mobile machining platform 3 is arranged between the two rollers 71 of the lead screw supporting mechanism 7, when the mobile machining platform 3 moves in one direction along the lead screw 4, the mobile machining platform 3 will gradually approach the push rod 72 on the side of the lead screw supporting mechanism 7, and until the mobile machining platform 3 contacts the push rod 72, at this time the mobile machining platform 3 provides a pushing force for the push rod 72, so that the lead screw supporting mechanism 7 moves along the second sliding rail 6 under the pushing of the mobile machining platform 3; it should be noted that when the mobile machining platform 3 pushes the lead screw supporting mechanism 7 to any end of the lead screw 4, since the lead screw supporting mechanism 7 has a certain length, therefore the lead screw supporting mechanism 7 will always have one end near the middle part of the lead screw 4, thereby providing support for the middle part of the lead screw 4; however, when the mobile machining platform 3 and the lead screw supporting mechanism 7 are both near the middle part of the lead screw 4, the rollers 71 at both ends of the lead screw supporting mechanism 7 provide support for the lead screw 4, therefore no matter where the lead screw supporting mechanism 7 moves to, the lead screw supporting mechanism 7 can always provide support for the middle part of the lead screw 4, so that the lead screw 4 is not easy to bend downward under the influence of its own weight; furthermore, since the lead screw supporting mechanism 7 is installed on the base 1 through the second sliding rail 6, and the rollers 71 and the lead screw 4 are in rolling contact, therefore the lead screw supporting mechanism 7 can easily slide on the second sliding rail 6, the mobile machining platform 3 only needs to exert a small pushing force on the push rod 72 to push the lead screw supporting mechanism 7 to move, so that the mobile machining platform 3 does not need to consume too much kinetic energy when pushing the lead screw 4 to support, thereby reducing the loss of power; it should be pointed out that since the main shaft is usually uniform in speed during machining, therefore the lead screw supporting mechanism 7 of the application can also reduce the problem of the mobile machining platform 3 being jerked due to pushing the lead screw supporting mechanism 7.

[0051] As shown in Figures 2-5 The lead screw supporting mechanism 7 further comprises a connecting rod 73 and supporting seats 74 arranged at both ends of the connecting rod 73, and the rollers 71 are respectively rotatably connected to the supporting seats 74; the bottom of the supporting seat 74 is slidably connected to the second slide rail 6; the push rod 72 and / or the mobile machining platform 3 are provided with a buffer block 8.

[0052] The supporting seats 74 at both ends are connected through the connecting rod 73, which can make the two supporting seats connected to realize simultaneous action, and the connecting rod 73 can also make the lead screw supporting mechanism 7 more lightweight due to its simple structure; the rollers 71 are rotatably connected to the supporting seats 74, which provide support force for the rollers 71, and the rollers 71 can also rotate relative to the supporting seats 74; when the supporting seats 74 move, the rollers 71 rotate relative to the supporting seats 74, and the rollers 71 also roll along the bottom of the lead screw 4, so that the rollers 71 can always provide support force for the lead screw 4. Specifically, the rollers 71 can be connected to the bearing 533 seat through the ball bearing 533 to reduce the resistance and wear when the rollers 71 rotate relative to the bearing 533 seat.

[0053] In the process of moving the mobile machining platform 3 along the lead screw 4 and gradually approaching and pushing the push rod 72, at the moment when the mobile machining platform 3 contacts the push rod 72, due to the interaction of forces, the mobile machining platform 3 and the push rod 72 will all be subjected to impact force. In order to alleviate this impact force, a buffer block 8 can be arranged on the push rod 72 and / or the mobile machining platform 3. The buffer block 8 is arranged at the position where the mobile machining platform 3 and the push rod 72 contact. The buffer block 8 is made of elastic elements such as rubber, spring, etc., which can absorb impact force by deforming itself and restore to original shape under the action of elasticity to absorb the next impact.

[0054] Further, the supporting seat 74 comprises a sliding block 75 and a seat body assembly 76 symmetrically arranged on both sides of the sliding block 75;

[0055] The sliding block 75 is slidably installed on the second slide rail 6;

[0056] The seat body assembly 76 comprises a mounting seat 761 and a height adjusting block 762 detachably mounted on the mounting seat 761;

[0057] The top of the mounting seat 761 is provided with a groove 7611, one side of the groove 7611 is a slope, the other side of the groove 7611 is provided with a threaded adjusting hole 7612 penetrating through, and the threaded adjusting hole 7612 is provided with an adjusting screw;

[0058] The height adjusting block 762 comprises an adjusting portion 7621, the bottom surface of the adjusting portion 7621 is provided with a protrusion 7623, one side of the protrusion 7623 is provided with a slope 7624 matched with the slope of the groove 7611;

[0059] The roller 71 is rotationally connected to the height adjusting block 762.

[0060] The slider 75 is located at the bottom of the support seat 74, and is used to be in sliding connection with the second sliding rail 6 and to bear the seat body assembly 76; the mounting seat 761 in the seat body assembly 76 is detachably connected with the height adjustment block 762, and the height of the height adjustment block 762 relative to the mounting seat 761 is adjustable. Specifically, the top of the height adjustment block 762 is provided with a runway-shaped long hole penetrating through, and the top surface of the mounting seat 761 is provided with a threaded hole, and the runway-shaped long hole and the threaded hole are connected through a screw, so that the position of the height adjustment block 762 relative to the mounting seat 761 can be adjusted back and forth along the direction of the runway-shaped long hole. One of the side walls of the groove 7611 at the top of the mounting seat 761 is a slope, and the protrusion 7623 of the height adjustment block 762 is provided with a slope 7624. It should be pointed out here that the extension direction of the runway-shaped long hole points to the slope of the groove 7611, so that when the slope 7624 of the height adjustment block 762 slides along the slope of the groove 7611, the threaded hole can also be kept in alignment with the runway-shaped long hole. When it is necessary to adjust the height of the height adjustment block 762, the screw in the threaded hole is loosened first, so that the height adjustment block 762 and the mounting seat 761 change from the locked state to the loosened state. At this time, the adjusting screw can pass through the threaded adjusting hole 7612 and extend into the groove 7611, and by adjusting the length of the adjusting screw extending into the groove 7611, the protrusion 7623 can be moved along the slope of the groove 7611. The longer the length of the adjusting screw extending into the groove 7611, the greater the distance of the protrusion 7623 moving along the slope of the groove 7611, so the height of the height adjustment block 762 relative to the mounting seat 761 is higher, and vice versa. After the height of the height adjustment block 762 is adjusted, only the screw in the runway-shaped long hole needs to be locked, and then the height adjustment block 762 and the mounting seat 761 change from the loosened state to the locked state, and at this time the height adjustment block 762 and the mounting seat 761 are kept relatively fixed. The roller 71 is installed on the height adjustment block 762, so that the roller 71 can adjust its height along with the height adjustment block 762 to adapt to different working conditions. For example, during the equipment debugging stage, due to the inevitable machining errors in the production and processing of each part, it is impossible to ensure that the roller 71 can be supported on the bottom of the lead screw 4 during assembly. The roller 71 may be too high or too low, and at this time the height of the roller 71 needs to be adjusted by adjusting the height adjustment block 762, so that the roller 71 can be tightly abutted to the bottom of the lead screw 4. Of course, during the long-term use process

[0061] In some embodiments, the height adjustment block 762 further comprises a connecting portion 7622, which is arranged on one side of the adjustment portion 7621;

[0062] The supporting seat 74 further comprises a connecting crossbar 77, one end of which is connected with the connecting part 7622, and the other end is connected with the connecting rod 73; the push rod 72 is arranged on the top of the end of the connecting crossbar 77 away from the connecting part 7622.

[0063] By arranging the crossbar, the width of the screw rod supporting mechanism 7 can be increased, and the push rod 72 is arranged at the end of the crossbar away from the connecting part 7622, so that the two push rods 72 mounted on the same supporting seat 74 can have a larger spacing. It can be understood that, in an ideal state, the spacing between the two push rods 72 and the moving machining platform 3 should be equal, so that the moving machining platform 3 can simultaneously contact the two push rods 72 and exert the same pushing force on the two push rods 72. However, due to the existence of machining errors and assembly errors, the spacing between the two push rods 72 and the moving machining platform 3 cannot be equal in actual conditions. In order to reduce the influence of the error as much as possible, the present application increases the spacing of the two push rods 72 by arranging the crossbar, so that when the moving machining platform 3 pushes the push rod 72, the two push rods 72 can provide more close pushing force for the supporting seat 74, so that the comprehensive stress direction of the supporting seat 74 is closer to the extension direction of the second sliding rail 6, thereby reducing the speed of wear of the second sliding rail 6 and the sliding block 75 due to the deviation between the comprehensive stress direction and the moving direction when the screw rod supporting mechanism 7 is pushed by the moving machining platform 3.

[0064] Further, as shown in Figure 4 and 6 The driving nut mechanism 5 comprises a motor 51, a connecting seat 52 and a nut assembly 53, the motor 51 and the connecting seat 52 are fixedly arranged on the moving machining platform 3, the connecting seat 52 is a cylindrical structure, and the nut assembly 53 is rotationally connected to the inside of the connecting seat 52; the nut assembly 53 is sleeved on the outside of the screw rod 4 and is in threaded connection with the screw rod; the motor 51 is in transmission connection with the nut assembly 53.

[0065] Since the screw rod 4 is fixedly arranged, in order to drive the mobile machining platform 3 to move along the screw rod 4, the drive nut mechanism 5 needs to obtain driving force by being actively rotated; specifically, the motor 51 is a power source, the motor 51 obtains rotating power by being connected to a power supply; the connecting seat 52 serves as a medium for connecting the nut assembly 53 with the mobile machining platform 3, so that the nut assembly 53 can be freely rotated and can be connected with the mobile machining platform 3 to provide thrust for the mobile machining platform 3; in actual work, the motor 51 drives the nut assembly 53 to rotate, since the nut assembly 53 is threadedly connected with the screw rod 4, in the process of rotation of the nut assembly 53 (including forward rotation and reverse rotation), the nut assembly 53 will inevitably move relative to the screw rod 4, and the nut assembly 53 pushes the mobile machining platform 3 to reciprocatingly move along the screw rod 4 through the connecting seat 52.

[0066] Specifically, the nut assembly 53 comprises a sleeve 531, a nut 532 and a bearing 533, the sleeve 531 and the nut 532 are both sleeved on the outside of the screw rod 4, and the nut 532 is fixedly connected with one end of the sleeve 531; the nut 532 is threadedly connected with the screw rod 4, and the inner wall of the sleeve 531 is suspended on the outer wall of the screw rod 4; the bearing 533 is arranged between the sleeve 531 and the connecting seat 52; the motor 51 is in transmission connection with the other end of the sleeve 531.

[0067] Among them, the sleeve 531 plays a role of providing an installation position and power transmission, specifically, since the sleeve 531 has a certain length, the bearing 533 can be installed between the outer wall of the sleeve 531 and the inner wall of the connecting seat 52; the other end of the sleeve 531 is in transmission connection with the motor 51, the power of the motor 51 is transmitted to the nut 532 through the sleeve 531, so as to drive the nut 532 to rotate; the inner wall of the sleeve 531 is not in contact with the screw rod 4, so as to avoid friction between the inner wall of the sleeve 531 and the screw rod 4 in the process of rotation of the nut 532.

[0068] As an optional implementation, the motor 51 is in transmission connection with the sleeve 531 through a synchronous belt or a gear.

[0069] Specifically, the connecting rod 73 is two, and the connecting rods 73 are symmetrically arranged on both sides of the supporting seat 74.

[0070] When one end of the screw rod supporting mechanism 7 is subjected to the pushing force of the moving machining platform 3, the support seat 74 on this side can transmit the pushing force to the support seat 74 on the other side through two connecting rods 73, so as to pull the support seat 74 on the other side to move, and the two connecting rods 73 are symmetrically arranged on the two sides of the support seat 74, so that the support seat 74 on the other side can be subjected to two almost parallel pulling forces when the support seat 74 on one side pulls the support seat 74 on the other side, so that the deviation of the comprehensive stress direction of the support seat 74 on the other side from the moving direction is smaller, so as to reduce the abrasion speed of the sliding block 75 and the second sliding rail 6. Of course, since the connecting rod 73 only bears the pulling force and does not bear the pressure in the application, the connecting rod 73 can also be replaced by a flexible connecting piece, such as a steel wire rope.

[0071] Further, the middle part of the mounting platform 11 is recessed to form a mounting groove 111, the mounting groove 111 extends along the length direction of the base 1, and the second sliding rail 6 is arranged in the mounting groove 111.

[0072] By arranging the mounting groove 111, installation spaces can be left for the driving nut mechanism 5, the second sliding rail 6 and the screw rod supporting mechanism 7, so that the overall structure is more compact, and since the mounting groove 111 is recessed downward, the mounting groove 111 can also play a collecting role when the lubricating medium (such as lubricating oil) on each component drops into the mounting groove 111.

[0073] In order to achieve better supporting effect, the ratio of the interval between the two rollers 71 of the screw rod supporting mechanism 7 to the length of the screw rod 4 is 1:3-2:3.

[0074] By arranging in this way, the maximum distance between the adjacent two supporting points of the screw rod 4 cannot exceed Taking the length of the screw rod 4 as 6 meters and the length of the screw rod supporting mechanism 7 as 2 meters as an example, when the screw rod supporting mechanism 7 moves to the end of the screw rod 4, since the roller 71 has a certain volume, one end of the screw rod supporting mechanism 7 is close to one end of the screw rod 4, and the other end of the screw rod supporting mechanism 7 is located at the middle part of the screw rod 4, at this time, the maximum interval between the adjacent two supporting points of the screw rod 4 is the distance from the roller 71 on the other end of the screw rod supporting mechanism 7 to the other end of the screw rod 4, which is about 4 meters; when the screw rod supporting mechanism 7 is located at the midpoint of the screw rod 4 (that is, the distances from the two rollers 71 to the midpoint of the screw rod 4 are equal), at this time, each supporting point is uniformly distributed on the screw rod 4, and the interval between any two adjacent supporting points is 2 meters. When the interval between the two rollers 71 of the screw rod supporting mechanism 7 is too long or too short, the supporting effect of the screw rod supporting mechanism 7 on the screw rod 4 will be affected.

[0075] In the description of the specification, the description using the terms "one embodiment", "certain embodiments", "exemplary embodiment", "example", "specific example" or "some examples" etc. means that the particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the present application. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily intended to refer to the same embodiment or example. Moreover, the particular features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0076] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for explaining the principles of the present application, and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, other specific embodiments of the present application can be conceived by those skilled in the art without creative efforts, and these equivalent variations or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A moving mechanism for an ultra-long machining center, characterized in that, include: A base, the top of which is provided with an installation platform; The first slide rail assembly is fixedly mounted on the mounting platform; A mobile processing platform, wherein the mobile processing platform is slidably connected to the first slide rail assembly; A lead screw, which is fixedly mounted on the mounting platform; A drive nut mechanism is mounted on the mobile processing platform and is threadedly engaged with the lead screw. The drive nut mechanism drives the mobile processing platform to move relative to the lead screw by actively rotating. The second slide rail is mounted on the mounting platform; A lead screw support mechanism is slidably mounted on a second slide rail, and rollers are provided at both ends of the lead screw support mechanism, with the rollers supporting the bottom of the lead screw; push rods are provided at both ends of the top of the lead screw support mechanism; when the mobile processing platform moves, it can push the push rods to move the lead screw support mechanism along the second slide rail. The lead screw support mechanism further includes a connecting rod and support seats disposed at both ends of the connecting rod, and the rollers are rotatably connected to the support seats respectively; the bottom of the support seats is slidably connected to the second slide rail; the push rod and / or the moving processing platform are provided with buffer blocks; The support includes a slider and a seat assembly symmetrically arranged on both sides of the slider; The slider is slidably mounted on the second slide rail; The base assembly includes a mounting base and a height adjustment block that is detachably mounted on the mounting base; The top of the mounting base is provided with a groove, one side of which is a slope, and the other side of which is provided with a through threaded adjustment hole, and an adjustment screw is provided in the threaded adjustment hole; The height adjustment block includes an adjustment part, the bottom surface of which is provided with a protrusion, and one side of the protrusion is provided with a slope that matches the inclined surface of the groove; The roller is rotatably connected to the height adjustment block; The height adjustment block also includes a connecting part, which is disposed on one side of the adjustment part; The support also includes a connecting crossbar, one end of which is connected to the connecting part and the other end of which is connected to the connecting rod; the push rod is disposed at the top of the end of the connecting crossbar away from the connecting part; The height adjustment block has a through racetrack-shaped elongated hole at its top; the top surface of the mounting base has a threaded hole; the racetrack-shaped elongated hole and the threaded hole are connected by screws so that the height adjustment block can be adjusted back and forth along the direction of the racetrack-shaped elongated hole relative to the position of the mounting base. The extension direction of the racetrack-shaped elongated hole points towards the inclined surface of the groove, so that when the ramp of the height adjustment block slides along the inclined surface of the groove, the threaded hole can remain aligned with the racetrack-shaped elongated hole.

2. The moving mechanism for an ultra-long machining center according to claim 1, characterized in that, The driving nut mechanism includes a motor, a connecting seat, and a nut assembly. The motor and the connecting seat are both fixedly mounted on the mobile processing platform. The connecting seat has a cylindrical structure, and the nut assembly is rotatably connected to the inside of the connecting seat. The nut assembly is sleeved on the outside of the lead screw and is threadedly connected to the lead screw. The motor is driven by the nut assembly.

3. A moving mechanism for an ultra-long machining center according to claim 2, characterized in that, The nut assembly includes a sleeve, a nut, and a bearing. The sleeve and the nut are both sleeved on the outside of the lead screw, and the nut is fixedly connected to one end of the sleeve. The nut is threadedly connected to the lead screw, and the inner wall of the sleeve is suspended from the outer wall of the lead screw. The bearing is disposed between the sleeve and the connecting seat. The motor is drivenly connected to the other end of the sleeve.

4. A moving mechanism for an ultra-long machining center according to claim 3, characterized in that, The motor and the sleeve are connected by a synchronous belt or gear transmission.

5. A moving mechanism for an ultra-long machining center according to claim 1, characterized in that, There are two connecting rods, which are symmetrically arranged on both sides of the support.

6. A moving mechanism for an ultra-long machining center according to claim 1, characterized in that, The mounting platform has a recessed center forming a mounting groove, which extends along the length of the base, and the second slide rail is disposed within the mounting groove.

7. A moving mechanism for an ultra-long machining center according to claim 1, characterized in that, The ratio of the distance between the two rollers of the lead screw support mechanism to the length of the lead screw is 1:3 to 2:3.

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