CN104858669B - Traversing, the screw lifting mechanism of the lathe bed with movable beam type gantry - Google Patents

Abstract

The invention discloses a kind of traversing, the screw lifting mechanism of the lathe bed with movable beam type gantry.Its lathe bed is overall closed-in construction；Lathe bed bottom is provided with the small rail car that can be moved in track；At least two processing stations are provided with along the length direction of workpiece, the front side of each station and rear side are provided with underframe, clamping device is provided between the front and back ends of left and right lathe bed and corresponding underframe.Screw lifting device and sychronisation are installed between lathe bed and small rail car.The present invention can be risen lathe bed by using screw lifting device, cross sliding driving device drives small rail car that the conversion for realizing lathe bed between multiple stations is moved along track, each processing stations can be positioned to lathe bed, in the case where effectively increase can process specification of workpieces size, reduce package size, cost is reduced, cost performance is improve.

Description

Traversing and screw lifting mechanism of the bed with moving beam type gantry

technical field

The invention relates to the technical field of metal processing machine tools with a moving beam type gantry, in particular to a bed with a moving beam type gantry.

Background technique

At present, the processing equipment for large-scale workpieces such as the underframe of rail passenger cars adopts large-scale CNC gantry-type processing equipment with large span and long stroke. It can be divided into two types: fixed beam type and moving beam type according to whether the beam moves or not.

The fixed-beam CNC gantry processing equipment adopts the fixed-beam gantry frame structure. The workpiece can be directly fixed on the worktable or on the electromagnetic chuck. The worktable is driven by double-outlet cylinders or other driving mechanisms to move longitudinally along the guide rail. The processing equipment of this structure The length of the guide rail needs to be at least twice the length of the worktable. Therefore, in order to adapt to the processing of ultra-long workpieces, not only the overall volume of the equipment is large, but also high requirements are placed on the drive mechanism of the guide rail and the worktable, and the equipment cost is relatively high. .

The structural feature of the mobile gantry processing equipment is that the gantry moves and the worktable is fixed, so there is no limit to the weight of the workpiece. With the continuous improvement of its automation performance and compounding degree, it has been more and more widely used. Its structure includes bed, gantry, cross slide, workbench, hydraulic power unit and electrical control device. The cross sliding table is composed of a sliding table and a sliding plate. There is a driving device and a transmission device between the sliding table and the gantry beam to drive the sliding table to move in the Y direction along the linear guide rail on the gantry beam. The power head is fixedly connected with the sliding plate. There is a driving device and a transmission device between the slide plate and the slide table, which drive the slide plate and the power head to move in the Z direction along the linear guide rail installed on the slide table. For example, on July 17, 2013, the State Intellectual Property Office published an application for an invention patent designed by Lu Songmao and Xue Jingqing, with the application number 201310130111.X and the name of the Gantry Mobile Multifunctional CNC Drilling and Milling Machine, including the bed and the operation box. And the electric control cabinet, the column is slidably supported on the bed, the beam mechanism is fixed on the column, the drilling and milling mechanism is slidably supported on the beam mechanism, the electric control cabinet is fixed on the beam mechanism, and the bed is a separate body The structure includes the left bed and the right bed, the left bed and the right bed are connected by the middle connecting frame, and the workbench is fixed on the connecting frame; the left column and the right column are respectively slidably supported by the sliding mechanism On the left bed and the right bed; the crossbeam mechanism straddles and is fixedly installed on the left and right columns, the upper drilling and milling mechanism is installed on the movable support plate, and the movable support plate drives the spindle of the upper drilling and milling mechanism along the crossbeam mechanism Moving, the lifting movement of the main shaft is controlled by the lifting mechanism. The moving plate in the lifting mechanism is slidably supported on the upper drilling and milling mechanism, and the moving plate drives the main shaft to move up and down. However, the processing equipment of this structure still directly fixes the workpiece on the worktable of the bed, and the size of the processed workpiece is limited by the size of the worktable. Therefore, in order to adapt to the processing of super long workpieces, the length of the worktable must be longer than the workpiece. The gantry needs to move over the entire length of the workpiece. Precise processing and positioning on such a long stroke shows the complexity of the structure. The complexity of the structure is obvious, and the price is also very expensive.

"Shandong Industrial Technology" magazine published in the 8th issue of 2014, the author is Li Baoguo of Changchun Railway Vehicle Co., Ltd., and the article titled "Integral Processing Technology of Aluminum Alloy Chassis of Railway Passenger Vehicles" introduced the introduction of Changchun Railway Vehicle Co., Ltd. The 30-meter gantry mobile five-axis linkage CNC machining center produced by FOOKE company can meet the requirements of the overall processing of the chassis with the size of the traveling axis, and the spindle head of the 42kW electric spindle can meet the characteristics of high speed, high power and low torque for aluminum alloy cutting. Even for this kind of imported large-scale machining center, due to the large processing area of the machine tool, the high cost of the overall workbench, and the difficulty in installation, the overall workbench scheme was abandoned and the segmented workbench scheme was adopted; the interference between the tooling and the workpiece processing position requires installation The clamping position must have a flexible and adjustable function, so the clamping scheme of the folding tool is adopted with the movable beam installed on the double longitudinal guide rail as the base, and the height of the workpiece is evenly distributed on it.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a simple structure and low cost mechanism for lateral movement and screw lifting of the bed with a moving beam type gantry, which is suitable for the processing of ultra-long workpieces such as rail passenger car underframes. .

The technical scheme that the present invention adopts for realizing the above object is:

A bed with a moving beam type gantry for lateral movement, screw lifting mechanism, including bed, gantry, hydraulic power unit and electrical control device, the gantry can move along the guide rail on the bed in X direction, characterized in that : the bed includes a left bed, a right bed, a front connecting beam and a rear connecting beam, the front ends of the left bed and the right bed are fixedly connected with the front connecting beam, the rear ends of the left bed and the right bed are connected with the rear The connecting beam is fixedly connected; the lower parts of the front connecting beam and the rear connecting beam are respectively equipped with a front track trolley and a rear track trolley, and two ground rails respectively corresponding to the front track trolley and the rear track trolley are arranged on the foundation. The track trolley and the rear track trolley can reciprocate on the corresponding ground rails along the X-axis direction; a screw lifting device and a synchronization device are installed between the bed and the front track trolley and the rear track trolley; along the workpiece There are at least two processing stations in the length direction, and two underframes fixed on the foundation are respectively arranged on the front side and the back side of each processing station, and the two underframes on the front side are located on the front connecting beam. outside, and correspond to the front ends of the left bed and the right bed respectively; Clamping devices and bed position adjustment devices are arranged between the front ends of the bed and the right bed and the corresponding underframes, and clamps are respectively arranged between the rear ends of the left and right bed and the corresponding underframes. Tightening device and bed position adjustment device.

In order to expand the processing range and ensure the processing accuracy, in the present invention, a screw lifting device and a synchronizing device are installed between the bed, the front rail trolley and the rear rail trolley. At this time, the screw lifting device can lift the bed together with the main machine on it to process the higher surface. On the other hand, when the surface to be processed is lower, the screw lifting device can lift the bed together with the The main machine falls together to avoid the reduction of machining accuracy caused by the excessive extension of the main shaft and the reduction of rigidity.

In the present invention, the screw lifting device includes a drive motor, a reducer, a commutator A, a commutator B, a commutator C, a commutator D, a connecting rod A, a connecting rod B, a connecting rod C, a connecting rod Rod D, nut A, nut B, nut C, nut D, screw A, screw B, screw C, screw D, guide sleeve A, guide post A, bearing seat A, bearing seat B , bearing seat C, bearing seat D, hard limit A, hard limit B, hard limit C, hard limit D; the drive motor and reducer are respectively fixed on the outer side of the rear connecting beam and the bottom plate, and the drive motor The output shaft is connected to the input shaft of the reducer, and the two output shafts of the reducer are connected to the input shafts of commutator A and commutator B installed at the rear end of the left bed and the rear end of the right bed respectively through connecting rod A and connecting rod B One output shaft of the commutator A is connected with the input shaft of the commutator C installed at the front end of the left bed through the connecting rod C, and the other output shaft is connected with one end of the lead screw A, and the lead screw A passes through the The bearing seat A at the bottom of the rear end of the left bed meshes with the screw nut A installed on the left end of the rear track trolley, and the bearing seat A is provided with a hard limit A; an output shaft of the commutator B is installed on the The input shaft of the commutator D at the front end of the right bed is connected, and the other output shaft is connected with one end of the lead screw B. The lead screw B passes through the bearing seat B installed at the bottom of the rear end of the right bed and is installed on the right end of the rear track trolley. The screw nut B is meshed, and the bearing seat B is provided with a hard limit B; the output shaft of the commutator C is connected to one end of the lead screw C, and the lead screw C passes through the bearing seat C installed at the bottom of the front end of the left bed. The screw nut C installed on the left end of the front track trolley meshes with each other, and the bearing seat C is provided with a hard limit C; the output shaft of the commutator D is connected with one end of the screw D, and the screw D passes through and is installed at the front end of the right bed The bearing seat D at the bottom meshes with the screw nut D installed on the right end of the front track trolley, and the bearing seat D is provided with a hard limiter D; the screw A, the screw B, the screw C, and the screw D are respectively connected by bearing rotation on the bearing housing A, bearing housing B, bearing housing C and bearing housing D; the guide sleeves A are 4, respectively installed on the front and rear ends of the left bed and the right bed, and are respectively located on the commutator A and the rear side of commutator B and the front side of commutator C and commutator D, the guide post A is respectively installed on the left end and right end of the front track trolley and the rear track trolley, corresponding to the position of the guide sleeve A and can be Sliding in the guide bush A;

In the present invention, the synchronizing device includes a gear, a rack, a rack mounting seat, a bearing seat, and a synchronizing shaft. Synchronous shaft, the two ends of synchronous shaft are equipped with gear respectively, and the rack that meshes with gear is installed on the rack mounting seat, and the rack mounting seat is respectively installed on the rear track dolly of front track dolly.

In the present invention, the front track trolley includes a front frame body, a front drive device, and front wheels A, front wheels B, and front wheels C connected to the front frame body in turn from right to left, and the front wheels C are The front sprocket is coaxially installed, and the front sprocket is connected with the driving sprocket on the front driving device through the front chain; the front driving device is a front motor and a front reducer installed on the front frame body, and the The driving sprocket is arranged on the output shaft of the front reducer, and the input shaft of the front reducer is connected with the front motor;

Described rear track trolley comprises rear vehicle frame body, rear driving device and the rear wheel A, rear wheel B and rear wheel C that are connected to the rear vehicle frame body in order to rotate from right to left, rear wheel C is coaxially installed with Rear sprocket, the rear sprocket is connected with the driving sprocket on the rear driving device through the rear chain; the described rear driving device is a rear motor and a rear reducer installed on the rear vehicle frame body, and the described driving sprocket is set On the output shaft of the rear reducer, the input shaft of the rear reducer is connected with the rear motor.

In the present invention, the underframe is connected to the foundation through the first foundation plate, a support plate is installed on the top, and one end of the support plate protrudes from the underframe;

The bed position adjusting device is an adjusting bolt installed on the adjusting plate, and the adjusting plate is installed on the outside of the support plate protruding from one end of the chassis; the relative position between the bed and the workpiece can be adjusted in a small range by adjusting the bolt, satisfying It is necessary to process large workpieces; when the power head is working, the adjusting bolts can also limit the possible rotation of the bed in the plane.

The clamping device includes a mounting frame, a clamping oil cylinder, a guide sleeve B, a guide column B and a clamp. The mounting frame is composed of a vertical plate, a rib plate and a horizontal plate, and the mounting frame is fixedly connected to the bed through the vertical plate. The clamping cylinder and the guide sleeve B are installed on the horizontal plate of the mounting frame, the piston rod end of the clamping cylinder is fixedly connected with the clamp, and the support plate is clamped between the clamp and the horizontal plate, and the guide post B and the guide sleeve B Correspondingly, it is installed on the clamp and can slide in the guide bush B.

In order to improve the reliability of the processing process, in the above technical solution, the upper planes of the support plates on the chassis in the same processing station are located on the same plane. In the above technical solution, the maximum distance from the lower plane of the horizontal plate to the plane on the support plate is smaller than the maximum distance from the upper plane of the nut to the hard limit. The screw lifting device lifts the bed together with the main machine on it. After moving to the processing station, the screw lifting device moves again, the bed and the main machine on it fall down, and the bed contacts the bottom frame. The maximum distance from the plane on the support plate is less than the maximum distance from the upper plane of the nut to the hard limit. When the lower plane of the horizontal plate of the clamping device contacts the upper plane of the support plate on the chassis, the host stops falling and the drive motor continues to operate. , the lead screw rotates to lift the nut and then drives the track trolley to be lifted, so that the track trolley is separated from the ground rail, and then the clamping device is clamped, and the bed and the main machine on it are fixed on the chassis connected to the foundation, so that The equipment has high rigidity.

The beneficial effects of the present invention are:

By using the screw lifting device to lift the bed together with the main machine on it, the traverse drive device drives the track trolley to move along the ground rail to realize the conversion of the bed among multiple stations, and each processing station can The position is fine-tuned and positioned. In the case of effectively increasing the size of the workpiece that can be processed, the size of the whole machine is reduced, the cost is reduced, and the cost performance is improved.

Description of drawings

Fig. 1 is a structural schematic diagram of a large workpiece rail passenger car underframe in an inverted state.

Fig. 2 is a structural schematic diagram of a rail passenger car underframe corbel.

Fig. 3 is an enlarged schematic view of the bolster part of the underframe of the rail passenger car.

Fig. 4 is a top view structural schematic diagram of the traversing and screw lifting mechanism of the bed with a moving beam type gantry according to the present invention.

Fig. 5 is a right-view structure schematic diagram of the lateral movement and screw lifting mechanism of the bed with a moving beam type gantry according to the present invention.

FIG. 6 is a schematic cross-sectional view of J-J in FIG. 4 .

Fig. 7 is a structural schematic diagram of the screw lifting device.

FIG. 8 is an enlarged schematic view of part E in FIG. 6 .

FIG. 9 is an enlarged schematic view of part F in FIG. 6 .

FIG. 10 is an enlarged schematic view of part A in FIG. 4 .

FIG. 11 is an enlarged schematic view of part B in FIG. 4 .

FIG. 12 is an enlarged schematic view of part C in FIG. 4 .

FIG. 13 is an enlarged schematic view of part D in FIG. 4 .

Fig. 14 is a G-direction view in Fig. 7 .

Fig. 15 is a view taken along the H direction in Fig. 7 .

Fig. 16 is a schematic structural view of the clamping device in the present invention.

Fig. 17 is a side view structural schematic diagram of the front track trolley in the present invention.

Fig. 18 is a side view structural schematic diagram of the middle and rear track trolley of the present invention.

Fig. 19 is a schematic structural view of the chassis of the present invention.

FIG. 20 is a schematic cross-sectional view of G-G in FIG. 4 .

FIG. 21 is an enlarged schematic view of part K in FIG. 20 .

Among the figure: 100-front track trolley, 101-front frame body, 102-front drive device, 10201-front motor, 10202-front reducer, 103-front wheel A, 104-front wheel B, 105-front wheel C , 106-front sprocket, 107-front chain, 200-underframe, 201-first anchor plate, 202-support plate, 203-adjusting plate, 204-adjusting bolt, 300-rear track trolley, 301-rear frame Body, 302-rear drive device, 30201-rear motor, 30202-rear reducer, 303-rear wheel A, 304-rear wheel B, 305-rear wheel C, 306-rear sprocket, 307-rear chain, 400- Workpiece clamping device, 500-workpiece positioning device, 501-adjusting pad iron, 502-positioning device A, 503-positioning device B, 600-bed, 601-left bed, 602-right bed, 603-front connection Beam, 604-rear connecting beam, 60401-vertical plate, 60402-bottom plate, 605-screw lifting device, 60501-drive motor, 60502-reducer, 60503-commutator A, 60504-commutator B, 60505-change Commutator C, 60506-commutator D, 60507-connecting rod A, 60508-connecting rod B, 60509-connecting rod C, 60510-connecting rod D, 60511-nut D, 160512-screw D, 60513-guide Set A, 60514-guide column A, 60515-bearing seat D, 60516-hard limit D, 606-clamping device, 60601-mounting frame, 6060101-vertical plate, 6060102-rib plate, 6060103-horizontal plate, 60602- Clamping cylinder, 60603-guide sleeve B, 60604-guide column B, 60605-clamp, 607-synchronization device, 60701-gear, 60702-rack, 60703-rack mounting seat, 60704-bearing seat, 60705-synchronization Axis, 700-gantry, 800-cross slide, 801-slide, 802-slide, 803-power head, 900-ground rail, 1000-workpiece, J1-reference edge, J2-reference edge.

detailed description

In order to clearly illustrate the technical characteristics of the present solution, the present invention will be further described below through specific implementation modes and in conjunction with the accompanying drawings.

Referring to Fig. 4 to Fig. 7 and Fig. 9, a lateral movement and screw lifting mechanism of a bed with a moving beam type gantry is applied to a CNC gantry drilling and milling machine for processing large workpiece rail passenger car underframes, including a bed 600, The gantry 700, the workpiece clamping device 400, the workpiece positioning device 500, the hydraulic power device and the electrical control device, the gantry 700 can move along the guide rail on the bed 600 in the X direction, and the gantry beam is slidably installed to move along the Y direction. A cross slide 800, on which a power head 803 moving along the Z direction is slidably installed; the bed 600 includes a left bed 601, a right bed 602, a front connecting beam 603 and a rear connecting beam 604, the left bed The front ends of the body 601 and the right bed 602 are fixedly connected by bolts through the front connecting beam 603, and the rear ends of the left bed 601 and the right bed 602 are connected by bolts through the rear connecting beam 604 to form a frame bed of the overall structure; The gantry 700 moves along the linear guide rail installed on the bed 600 through the driving device and transmission device installed between the gantry 700 and the bed 600; the cross slide 800 is composed of a slide 801 and a slide 802, and the slide 801 is set on the gantry On 700, a driving device and a transmission device are arranged between the slide table 801 and the beam of the gantry 700, which drives the slide table 801 to move in the Y direction along the linear guide rail installed on the beam of the gantry 700; between the power head 803 and the slide table 801 There is a slide plate 802, and the power head 803 is fixedly connected with the slide plate 802. A driving device and a transmission device are arranged between the slide plate 802 and the slide table 801, and drive the slide plate 802 and the power head 803 to move along the linear guide rail installed on the slide table 801 in the Z direction. . The above-mentioned driving device and transmission device are known technologies, such as the servo motor installed on the bed 600 drives the lead screw to rotate, the screw nut installed on the gantry 700 meshes with the lead screw, and drives the gantry 700 to be installed on the bed 600 along the The linear guide rail moves; the linear guide rail includes the left linear guide rail installed on the left bed 601 and the right linear guide rail installed on the right bed 602, the left end and the right end of the gantry beam are respectively provided with sliders, and the sliders are respectively aligned with the left linear guide rail. The guide rail and the right linear guide rail are slidingly connected; the driving device and the transmission device arranged between the slide table 801 and the gantry 700, the drive device and the transmission device arranged between the slide plate 802 and the slide table 801 are also of similar structure.

The bottoms of the front connecting beam 603 and the rear connecting beam 604 are respectively provided with a front rail trolley 100 and a rear rail trolley 300, and two ground rails 900 respectively corresponding to the front rail trolley 100 and the rear rail trolley 300 are provided on the foundation. , the front track trolley 100 and the rear track trolley 300 can reciprocate on the corresponding ground rails 900 along the X-axis direction; the workpiece clamping device 400 and the workpiece positioning device 500 are fixed on the foundation between the two ground rails 900 Above: two processing stations are arranged along the length direction of the workpiece 1000, and two underframes 200 fixedly connected to the foundation are respectively arranged on the front side and the rear side of each processing station, and the two bottom frames 200 on the front side The frame 200 is located on the outside of the front connecting beam 603 and corresponds to the front ends of the left bed 601 and the right bed 602 respectively. , the rear end of the right bed 602 is corresponding; the front end of the left bed 601, the right bed 602 and the corresponding underframe 200 are provided with a clamping device 606 and a bed position adjustment device, and the left bed 601 1. Between the rear end of the right bed 602 and the corresponding underframe 200, a clamping device 606 and a bed position adjusting device are arranged respectively.

Referring to FIG. 6 to FIG. 8 and FIG. 13 , a screw lifting device 605 and a synchronizing device 607 are installed between the bed and the front rail trolley 100 and the rear rail trolley 300 .

Screw lifting device 605 includes drive motor 60501, reducer 60502, commutator A60503, commutator B60504, commutator C60505, commutator D60506, connecting rod A60507, connecting rod B60508, connecting rod C60509, connecting rod D60510, wire Nut A, nut B, nut C, nut D60511, lead screw A, lead screw B, lead screw C, lead screw D60512, guide sleeve A60513, guide post A60514, bearing seat A, bearing seat B, bearing seat C , Bearing seat D60515, hard limit A, hard limit B, hard limit C, hard limit D60516, screw nut A, screw nut B, screw nut C, screw nut D have the same structure, screw A, screw B , lead screw C and lead screw D have the same structure, bearing housing A, bearing housing B, bearing housing C and bearing housing D have the same structure, hard limit A, hard limit B, hard limit C, and hard limit D have the same structure The front connecting beam 603 and the rear connecting beam 604 are all welded by the vertical plates 60401 on both sides and the bottom plate 60402 connected between the bottoms of the two vertical plates, and the drive motor 60501 is fixedly connected to the outside of the vertical plate 60401 of the rear connecting beam 604 , the reducer 60502 is fixedly connected to the bottom plate 60402 of the rear connecting beam 604, the output shaft of the drive motor 60501 is connected to the input shaft of the reducer 60502 through a coupling, and the two output shafts of the reducer 60502 are respectively connected through a coupling and a coupling. The rod A60507, the coupling and the connecting rod B60508 are connected with the commutator A60503 and the input shaft of the commutator B60504 installed at the rear end of the left bed 601 and the right bed 602, and an output shaft of the commutator A60503 is connected through the coupling The shaft device and connecting rod C60509 are connected to the input shaft of the commutator C60505 installed at the front end of the left bed 601, and the other output shaft is connected to one end of the screw A, which passes through the bottom of the rear end of the left bed 601 The bearing seat A of the bearing seat A is meshed with the screw nut A installed on the left end of the rear track trolley 300, and the bearing seat A is provided with a hard limit position A; an output shaft of the commutator B60504 is installed on the The input shaft of the commutator D60506 at the front end of the right bed 602 is connected, and the other output shaft is connected with one end of the lead screw B. The lead screw B passes through the bearing seat B installed at the bottom of the rear end of the right bed 602 and is installed on the rear track The screw nut B at the right end of the trolley 300 is engaged, and the bearing seat B is provided with a hard limit B; the output shaft of the commutator C60505 is connected with one end of the lead screw C, and the lead screw C passes through and is installed at the bottom of the front end of the left bed 601 The bearing seat C of the bearing seat C meshes with the screw nut C installed on the left end of the front track trolley 100, and the bearing seat C is provided with a hard limit position C; the output shaft of the commutator D60506 is connected with one end of the lead screw D60512, and the lead screw D60512 passes through The bearing seat D60515 installed at the bottom of the front end of the right bed 602 meshes with the screw nut D60511 installed at the right end of the front track trolley 100, and the bearing seat D60515 is provided with a hard limit D60516; screw A, screw B , lead screw C and lead screw D60512 are respectively connected to bearing housing A, bearing housing B, bearing housing C and bearing housing D60515 through bearing rotation; 4 guide sleeves A60513 are respectively installed on the front ends of left bed 601 and right bed 602 and the rear end, and are respectively located at the rear side of commutator A60503 and commutator B60504 and the front side of commutator C60505 and commutator D60506. and the right end, corresponding to the position of the guide sleeve A60513 and can slide in the guide sleeve A60513;

The synchronous device 607 includes a gear 60701, a rack 60702, a rack mounting seat 60703, a bearing seat 60704, and a synchronous shaft 60705. The two bearing seats 60704 are respectively installed at the front and rear ends of the right bed 602, between the two bearing seats 60704 There is a synchronous shaft 60705 connected in rotation, gears 60701 are respectively installed at both ends of the synchronous shaft 60705, the rack 60702 meshing with the gear 60701 is installed on the rack mounting base 60703, and the two rack mounting bases 60703 are respectively installed on the front track trolley 100 and the rear track dolly 300.

Referring to Fig. 14, Fig. 15, Fig. 17 and Fig. 18, the front track trolley 100 includes a front frame body 101, a front driving device 102, and front wheels A103 connected to the front frame body 101 in turn from right to left , front wheel B104 and front wheel C105, front wheel C105 is coaxially equipped with front sprocket 106, and front sprocket 106 links to each other with the driving sprocket on the front drive unit 102 by front chain 107; Described front drive unit 102 is The front motor 10201 and the front reducer 10202 installed on the front frame body 101, the drive sprocket is arranged on the output shaft of the front reducer 10202, and the input shaft of the front reducer 10202 is connected with the front motor 10201;

Described rear rail trolley 300 comprises rear vehicle frame body 301, rear driving device 302 and rotates and is connected to rear wheel A303 on the rear vehicle frame body 301, rear wheel B304 and rear wheel C305 sequentially from right to left, rear wheel C305 Rear sprocket wheel 306 is installed coaxially, and rear sprocket wheel 306 links to each other with the driving sprocket wheel on the rear driving device 302 by rear chain 307; Described rear driving device 302 is rear motor 30201 and The rear reducer 30202, the drive sprocket is arranged on the output shaft of the rear reducer 30202, and the input shaft of the rear reducer 30202 is connected with the rear motor 30201.

Referring to Fig. 19, the underframe 200 is connected to the foundation through the first foundation plate 201, and a support plate 202 is installed on the top, and one end of the support plate 202 protrudes from the underframe 200; the bed position adjustment device is installed on The adjusting bolt 204 on the adjusting plate 203, the adjusting plate 203 is installed on the outside of the support plate 202 protruding from one end of the bottom frame 200;

Referring to Fig. 16, the clamping device 606 includes a mounting frame 60601, a clamping cylinder 60602, a guide sleeve B60603, a guide post B60604 and a clamp 60605. The mounting frame 60601 is composed of a vertical plate 6060101, a rib plate 6060102 and a horizontal plate 6060103. The mounting frame 60601 is fixedly connected with the bed 600 through the vertical plate 6060101, the clamping oil cylinder 60602 and the guide sleeve B60603 are installed on the horizontal plate 6060103 of the mounting frame 60601, the rod end of the clamping oil cylinder 60602 is firmly connected with the clamp 60605, and The support plate 202 is clamped between the clamp 60605 and the horizontal plate 6060103, the guide post B60604 corresponds to the guide sleeve B60603, is installed on the clamp 60605, and can slide in the guide sleeve B60603.

The upper planes of the support plates 202 on the chassis 200 in the same processing station are located on the same plane. The maximum distance from the lower plane of the horizontal plate 6060103 to the upper plane of the support plate 202 is smaller than the maximum distance from the upper plane of the nut 60509 to the hard limit 60514.

Referring to Fig. 4, Fig. 11 and Fig. 12, the workpiece positioning device 500 includes an adjustment pad iron 501 arranged at the bottom of the workpiece 1000, a positioning device A502 arranged at the left end of the workpiece 1000, and a positioning device B503 arranged at the front and rear sides of the workpiece 1000.

The working process of this embodiment is as follows:

Hoist the workpiece 1000 in place, make the left end of the workpiece 1000 lean against the positioning device A502, and the front side of the workpiece 1000 lean against the positioning device B503 on the front side of the workpiece; adjust the workpiece to keep it horizontal by adjusting the pad iron 501; then adjust the positioning The device A502 and the positioning device B503 perform preliminary positioning on the workpiece 1000; the screw lifting device 605 moves, the bed 600 and the main machine on it rise, and the front track trolley 100 and the rear track trolley 300 respectively move on the front drive device 102 and the rear drive device 302 Driven by the drive, the bed 600 and the main machine on it are driven along the ground rail 900 to the first processing station, the screw lifting device 605 moves again, the bed 600 and the main machine on it fall, and when the horizontal plate of the clamping device 606 When the lower plane of 6060103 is in contact with the upper plane of the support plate 202 on the chassis 200, the bed 600 stops falling together with the main engine on it, but at this time, the upper planes of the screw A, the screw B, the screw C, and the screw D60511 The plane does not touch the hard limit A, hard limit B, hard limit C, hard limit D60516, the screw lifting device continues to move, and then pulls up the front track trolley 100 and the rear track trolley 300, the front track trolley 100 and the The rear track dolly 300 breaks away from the ground rail 900. Install a dial indicator on the power head 803, use the dial indicator to detect the reference side J1, and adjust the positional relationship between the workpiece 1000 and the bed 600 through the mutual cooperation of the workpiece positioning device 500 and the bed position adjustment device, and adjust the workpiece 1000 again , Positioned to the state to be processed; the clamping device 606 moves, the piston rod of the clamping cylinder 60602 retracts and drives the clamp 60605 to move upward until the upper plane of the clamp 60605 contacts the lower plane of the support plate 202 to clamp the support plate 202 in the clamp Between 60605 and the horizontal plate 6060103; tighten the adjusting bolt 204 installed on the adjusting plate 203 of the bottom frame, so that the adjusting bolt 204 leans against the horizontal plate 6060103 of the mounting frame 60601 of the clamping device 606; tighten the workpiece clamping device The compression bolt on the 400 compresses the workpiece 1000. The action of the power head 803 is controlled by the electric control device to perform milling on the A surface of the workpiece 1000, and use the processed A surface as the processing reference to perform milling on the B surface. After the tool is changed, the A The position of the center hole on the surface, and then drill the A surface, and use the processed center hole as the processing reference to drill the other 8 holes on the A surface and the holes on the B surface, and complete the workpiece 1000 first. The processing content of the station. The clamping device 606 moves, and the piston rod of the clamping cylinder 60602 stretches out to drive the clamp 60605 to move downward. The upper plane of the clamp 60605 is separated from the lower plane of the support plate 202; 300 falls and contacts with ground rail 900, and screw lifting device 605 continues to move, and lathe bed 600 is lifted together with the main engine on it. Driven by the front drive device 102 and the rear drive device 302 respectively, the front rail trolley 100 and the rear rail trolley 300 drive the bed 600 together with the main machine on it to move along the ground rail to the second processing station, and the screw lifting device 606 moves again , repeating the above operation steps to complete the processing content of the workpiece 1000 at the second station. Then the clamping device 606 acts, and the piston rod of the clamping oil cylinder 60602 stretches out to drive the clamp 60605 to move downward, and the upper plane of the clamp 60605 is separated from the lower plane of the support plate 202 . Screw lifting device 605 moves then, and front track dolly 100 and rear track dolly 300 fall and contacts with ground rail 900, and screw lifting device 605 continues to move, and lathe bed 600 is lifted together with the main engine on it. Driven by the front drive device 102 and the rear drive device 302 respectively, the front rail trolley 100 and the rear rail trolley 300 drive the bed 600 and the host machine thereon to move to the initial position along the ground rail 900 . Repeat the above steps to process the next workpiece.

Claims (4)

1. A lateral movement and screw lifting mechanism of a bed with a moving beam type gantry, comprising a bed and a gantry, and the gantry can move in the X direction along a guide rail on the bed, and it is characterized in that: the bed includes The left bed, the right bed, the front connecting beam and the rear connecting beam, the front ends of the left bed and the right bed are fixedly connected with the front connecting beam, and the rear ends of the left bed and the right bed are fixedly connected with the rear connecting beam; The lower parts of the front connecting beam and the rear connecting beam are respectively equipped with a front track trolley and a rear track trolley, and two ground rails respectively corresponding to the front track trolley and the rear track trolley are arranged on the foundation, and the front track trolley and the rear track trolley They can reciprocate on the corresponding ground rails along the X-axis direction; a screw lifting device and a synchronization device are installed between the bed and the front track trolley and the rear track trolley; along the length direction of the workpiece, there are at least two Each processing station is provided with two underframes fixedly connected to the foundation on the front side and the back side of each processing station, and the two underframes on the front side are located on the outside of the front connecting The front ends of the bed and the right bed are corresponding, and the two bottom frames on the rear side are located on the outside of the rear connecting beam, and correspond to the rear ends of the left bed and the right bed respectively; the left bed, the right bed A clamping device and a bed position adjustment device are provided between the front end of the bed and the corresponding base frame, and a clamping device and a bed position adjustment device are respectively provided between the rear ends of the left bed and the right bed and the corresponding base frame. adjustment device; The screw lifting device includes a drive motor, a reducer, a commutator A, a commutator B, a commutator C, a commutator D, a connecting rod A, a connecting rod B, a connecting rod C, a connecting rod D, a wire Nut A, nut B, nut C, nut D, screw A, screw B, screw C, screw D, guide sleeve A, guide post A, bearing seat A, bearing seat B, bearing seat C , bearing seat D, hard limit A, hard limit B, hard limit C, hard limit D; the drive motor and the reducer are fixedly connected to the outer side of the rear connecting beam and the bottom plate respectively, and the output shaft of the drive motor and the reducer The two output shafts of the reducer are respectively connected to the input shafts of commutator A and commutator B installed at the rear end of the left bed and the rear end of the right bed through connecting rod A and connecting rod B respectively. One output shaft of the switch A is connected with the input shaft of the commutator C installed at the front end of the left bed through the connecting rod C, and the other output shaft is connected with one end of the lead screw A, which passes through and is installed at the rear end of the left bed The bearing seat A at the bottom meshes with the screw nut A installed on the left end of the rear track trolley, and the bearing seat A is provided with a hard limit A; an output shaft of the commutator B is installed on the front end of the right bed through the connecting rod D. The commutator D is connected to the input shaft, and the other output shaft is connected to one end of the lead screw B. The lead screw B passes through the bearing seat B installed at the bottom of the rear end of the right bed and the screw nut B installed at the right end of the rear track trolley. There is a hard limit B on the bearing seat B; the output shaft of the commutator C is connected to one end of the lead screw C, and the lead screw C passes through the bearing seat C installed at the bottom of the front end of the left bed and is installed on the front track The screw nut C at the left end of the trolley is meshed, and the bearing seat C is provided with a hard limit C; the output shaft of the commutator D is connected to one end of the screw D, and the screw D passes through the bearing seat installed at the bottom of the front end of the right bed D is meshed with the screw nut D installed on the right end of the front track trolley, and the bearing seat D is provided with a hard limiter D; the screw A, screw B, screw C, and screw D are respectively connected to the bearing seat A through bearing rotation , Bearing Block B, Bearing Block C, and Bearing Block D; the guide sleeves A are 4, installed on the front and rear ends of the left bed and right bed respectively, and are respectively located on the commutator A and the commutator The rear side of B and the front side of commutator C and commutator D, the guide post A is respectively installed on the left end and right end of the front track trolley and the rear track trolley, corresponding to the position of the guide sleeve A and can be placed on the guide sleeve A middle slide; The synchronizing device includes a gear, a rack, a rack mounting seat, a bearing seat, and a synchronous shaft. The two ends of the shaft are respectively equipped with gears, and the racks meshed with the gears are installed on the rack mounts, and the rack mounts are respectively installed on the front track trolley and the rear track trolley. 2. The traversing and screw lifting mechanism of the bed with moving beam type gantry according to claim 1, characterized in that: the front track trolley includes a front frame body, a front drive device, and press from right to left Rotate the front wheel A, front wheel B and front wheel C connected to the front frame body in turn, the front wheel C is coaxially equipped with a front sprocket, and the front sprocket is connected with the driving sprocket on the front driving device through the front chain ; The front driving device is a front motor and a front reducer installed on the front frame body, the driving sprocket is arranged on the output shaft of the front reducer, and the input shaft of the front reducer is connected with the front motor; Described rear track trolley comprises rear vehicle frame body, rear driving device and the rear wheel A, rear wheel B and rear wheel C that are connected to the rear vehicle frame body in order to rotate from right to left, rear wheel C is coaxially installed with Rear sprocket, the rear sprocket is connected with the driving sprocket on the rear driving device through the rear chain; the described rear driving device is a rear motor and a rear reducer installed on the rear vehicle frame body, and the described driving sprocket is set On the output shaft of the rear reducer, the input shaft of the rear reducer is connected with the rear motor. 3. The lateral movement and screw lifting mechanism of the bed with a moving beam type gantry according to claim 1, characterized in that: the bottom frame is connected to the foundation through the first foundation plate, and a support plate is installed on the top , one end of the support plate protrudes from the chassis; The bed position adjustment device is an adjustment bolt installed on an adjustment plate, and the adjustment plate is installed on the outside of the support plate protruding from one end of the chassis; The clamping device includes a mounting frame, a clamping oil cylinder, a guide sleeve B, a guide column B and a clamp. The mounting frame is composed of a vertical plate, a rib plate and a horizontal plate, and the mounting frame is fixedly connected to the bed through the vertical plate. The clamping cylinder and the guide sleeve B are installed on the horizontal plate of the mounting frame, the piston rod end of the clamping cylinder is fixedly connected with the clamp, and the support plate is clamped between the clamp and the horizontal plate, and the guide post B and the guide sleeve B Correspondingly, it is installed on the clamp and can slide in the guide bush B. 4. The traversing and screw lifting mechanism of the bed with moving beam type gantry according to claim 3, characterized in that: the upper plane of the support plate on the underframe in the same processing station is located on the same plane; The maximum distance from the lower plane of the transverse plate to the plane on the support plate is smaller than the maximum distance from the upper plane of the nut to the hard limit.