CN112743108A

CN112743108A - Gantry lathe

Info

Publication number: CN112743108A
Application number: CN202011556301.4A
Authority: CN
Inventors: 洪增勤
Original assignee: Shanghai Yixin Metallurgical Equipment Manufacturing Co ltd
Current assignee: Shanghai Yixin Metallurgical Equipment Manufacturing Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-05-04

Abstract

The application relates to a gantry lathe, which comprises a lathe body, a spindle box and a tailstock, wherein the spindle box and the tailstock are positioned on two sides of the lathe body in the length direction; the lathe bed is still provided with at least two sets of support frames on being in the section between headstock and the tailstock, and the multiunit support frame is arranged along lathe bed length direction, the support frame upper end forms the holding tank for the arc opening setting, the lathe bed still is provided with the driving piece of the vertical displacement of drive support frame. This application utilizes pneumatic cylinder jacking support frame to aim at the location to axle type part, need not artifical hand axle type part installation, when having the improvement part installation effectiveness, ensures staff's personal safety's effect.

Description

Gantry lathe

Technical Field

The application relates to the field of machining, in particular to a gantry lathe.

Background

A lathe is a machine tool for turning a rotating workpiece mainly with a turning tool.

The Chinese patent with the grant publication number of CN103223496B provides a multi-gantry mobile numerically-controlled lathe, which comprises a lathe bed, a spindle box and a tailstock, wherein the spindle box is installed at one end of the lathe bed, the tailstock is supported on a tailstock guide rail of the lathe bed, a supporting wall is installed at the front side or the rear side of the lathe bed, a horizontal guide rail is fixed on the supporting wall, another horizontal guide rail is arranged at the other side of the lathe bed, two or more sets of gantry frames and tool rest mechanisms are installed on the horizontal guide rails at the two sides, the tool rest mechanisms are installed on the gantry frames, the two ends of the gantry frames are connected on the horizontal guide rails at the two sides in a sliding mode, the linear displacement work of the gantry frames is realized through a gantry feeding device, the two ends of shaft parts are respectively connected with the spindle box and the tailstock and are driven by the spindle box to realize circumferential.

Aiming at the related technologies, the inventor thinks that when the machined shaft parts are long, the shaft parts need to be hoisted by using a traveling crane, and two ends of the parts are correspondingly connected with a spindle box and a tailstock; because of the existence of the portal frame, the upper part of the portal frame is transversely arranged on the machine body, so that the parts cannot directly fall between the spindle box and the tailstock from top to bottom, and therefore, the parts need to be firstly lowered to be lower than the height of the portal frame, then penetrate through the opening side of the portal frame for translation, and then are aligned with the positions of the spindle box and the tailstock for connection and installation; in the process, the parts are placed completely by means of the crane, the crane has high shaking performance, and particularly, the crane needs to do multi-direction movement to bypass the portal frame, so that a plurality of workers need to hold the parts by hands, and then the crane driver is instructed to perform slow positioning, and safety accidents are easily caused while the working efficiency is low.

Disclosure of Invention

In order to improve part installation effectiveness, ensure staff's personal safety, this application provides a gantry lathe.

The application provides a gantry lathe adopts following technical scheme:

a gantry lathe comprises a lathe body, a spindle box and a tailstock, wherein the spindle box and the tailstock are positioned on two sides of the lathe body in the length direction; the lathe bed is still provided with at least two sets of support frames on being in the section between headstock and the tailstock, and the multiunit support frame is arranged along lathe bed length direction, the support frame upper end forms the holding tank for the arc opening setting, the lathe bed still is provided with the driving piece of the vertical displacement of drive support frame.

By adopting the technical scheme, when the parts are installed, the shaft parts are hoisted and abutted to the containing grooves of the multiple groups of supporting frames by utilizing the traveling crane, the shaft parts can be stably supported due to the multiple groups of supporting frames, and meanwhile, the containing grooves are convenient for the placement work of the parts; because the shaft parts are arranged in a circular shape, and the accommodating grooves are arranged in an arc shape, the shaft parts can be kept in a centered state under the action of the dead weight of the parts; the driving piece is used for driving the vertical displacement of the supporting frame, so that the shaft parts can be aligned with the spindle box and the tailstock on the horizontal plane conveniently, the tailstock is driven to abut against one end of the shaft parts by the driving force of the lathe, the shaft parts are driven to linearly displace, the other end of the shaft parts is connected with one side of the spindle box, the spindle box locks the shaft parts, the supporting frame displaces downwards at the same time, the abutting against the shaft parts is removed, the spindle box drives the shaft parts to rotate, and the portal frame drives the tool rest mechanism to perform turning processing on the shaft parts, so that the shaft parts are processed; in the process, the driving piece is used for driving the support frame to vertically displace, the positioning alignment work of the shaft parts is realized, the shaft parts do not need to be supported and corrected manually by workers, the working efficiency of the shaft parts is improved, meanwhile, the potential safety hazard that the workers are collided by the parts in the handheld parts can be avoided, and the personal safety of the workers is guaranteed.

Optionally, the holding tank is provided with at least two sets of backing rolls along the circumferencial direction, inlay on the backing roll perisporium and be equipped with the ball.

By adopting the technical scheme, the shaft parts to be processed have different diameters, and the outer walls of the shaft parts can be abutted against the multiple groups of supporting rollers in the process of lowering the shaft parts by utilizing the multiple groups of supporting rollers arranged in the accommodating groove, so that the shaft parts with different diameters can be supported; meanwhile, the embedded balls are arranged on the supporting rollers, the balls can rotate, shaft parts can be guided, friction between the shaft parts and the supporting rollers is reduced, and subsequent tailstocks are convenient to push the shaft parts to perform linear displacement.

Optionally, the driving part comprises a lifting rod vertically connected below the support frame and a hydraulic cylinder vertically connected with the lathe bed, and a telescopic shaft of the hydraulic cylinder is connected with the lifting rod; and a gear transmission mechanism is connected between the lifting rods of the plurality of groups of supporting frames.

By adopting the technical scheme, the hydraulic cylinder drives the lifting rod to vertically displace, so that the support frame is driven to vertically displace; meanwhile, the multiple groups of support frames are driven by the hydraulic cylinders respectively, and the telescopic work of the multiple groups of hydraulic cylinders is slightly different, so that the displacement amplitude of each support frame is different, and the gear transmission mechanism is arranged between the lifting rods, so that the synchronous displacement of the lifting rods is kept under the transmission work of the gear transmission mechanism, the vertical displacement amplitudes of the multiple groups of support frames are ensured to be the same, the same supporting force is applied to the shaft parts, and the shaft parts are more convenient to install.

Optionally, the gear transmission mechanism comprises a limiting seat sleeved outside the lifting rod, and the limiting seat is connected to the lathe bed and provided with a through hole for the lifting rod to pass through; the limiting seat is internally and rotatably connected with a first gear corresponding to the lifting rod, tooth grooves meshed with the first gear are formed in the peripheral wall of the lifting rod along the axis of the lifting rod, and rotating shafts are coaxially connected between the first gears corresponding to the multiple groups of supporting frames.

By adopting the technical scheme, the limiting seat plays a supporting role for the first gear and the rotating shaft, so that the first gear can perform stable autorotation work, when the lifting rod vertically displaces, the tooth socket drives the first gear to rotate, the rotating shaft realizes synchronous rotation of the first gears, and therefore each first gear is meshed with the lifting rod, and synchronous lifting work of the lifting rods is realized.

Optionally, the support frames are provided with two groups, a screw rod transmission piece for driving one group of support frames to move along the length direction of the bed body is arranged on the bed body, the rotating shaft comprises a first shaft and a second shaft which are coaxially arranged and mutually matched in an inserted manner, and the second shaft can only linearly slide relative to the first shaft; one ends of the first shaft and the second shaft, which are far away from each other, are respectively connected with a gear in a coaxial mode.

By adopting the technical scheme, when shaft parts with different lengths are processed, the screw rod transmission part can be used for driving one support frame to linearly displace according to the length of the shaft parts, so that the distance between the two groups of support frames is changed, the two groups of support frames can more uniformly support the shaft parts, and the stability of the shaft parts is ensured; meanwhile, the second shaft can slide relative to the first shaft, so that the rotating shaft still meets the requirement of synchronous rotation of adjacent gears in the displacement process of the support frame.

Optionally, the screw rod transmission part comprises a first screw rod, and the first screw rod is arranged in parallel with the length direction of the bed body and is rotatably connected to the bed body; the bottom of the hydraulic cylinder is provided with a mounting seat, the first screw rod penetrates through the mounting seat and is in threaded fit with the mounting seat, and the lathe bed is further provided with a motor connected with the first screw rod.

Through adopting above-mentioned technical scheme, utilize the mount pad to install the pneumatic cylinder fixedly, again through the screw-thread fit of lead screw one with the mount pad, when the motor drives lead screw one and rotates, can drive the support frame and carry out the sharp slip.

Optionally, the longitudinal section of the mounting seat is a concave shape with an upward opening, and the hydraulic cylinder is mounted in a groove formed in the mounting seat; the first screw rods are provided with two screws along the width direction of the mounting seat, and a belt transmission mechanism is connected between the first screw rods.

By adopting the technical scheme, the mounting seat is concave, so that the hydraulic cylinder can be more stably fixed on one hand, and the two groups of screw rods can penetrate through and are in threaded fit on the other hand, and when the two groups of screw rods rotate, more stable sliding driving force can be given to the mounting seat; meanwhile, under the action of the belt transmission mechanism, synchronous rotation work of the two first lead screws can be realized, and the driving work of the two first lead screws can be realized only by one motor.

Optionally, the lathe bed is provided with a sliding groove along the length direction of the lathe bed, and the bottom of the mounting seat is embedded in the sliding groove.

Through adopting above-mentioned technical scheme, the spout plays the spacing work of direction to the mount pad, makes the more stable straight line work of sliding that carries on of its mount pad.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the shaft part is lifted and placed in the support frame, then the vertical displacement of the support frame is realized by using the driving piece, the shaft part is aligned with the spindle box and the tailstock on the horizontal plane, the linear displacement of the shaft part is driven by the displacement of the tailstock, one end of the shaft part is connected with the spindle box, and then the spindle box locks the shaft part, so that the installation work of the shaft part can be completed;

2. utilize the tooth's socket and the meshing of gear that offer on the lifter, and adjacent gear is fixed in an organic whole through the pivot, when making its one of them lifter go up and down, can order about gear one and rotate to drive another gear one and lifter meshing, all lifters of synchronous drive go up and down, guarantee the synchronous vertical displacement of two sets of support frames, improve the stable supporting effect to shaft part.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic structural diagram of two groups of support frames in fig. 1.

Fig. 3 is an enlarged schematic view at a in fig. 2.

FIG. 4 is a schematic diagram of the construction of the screw drive and hydraulic cylinder.

Fig. 5 is a schematic structural view of the rotating shaft in fig. 2.

Description of reference numerals: 1. a bed body; 2. a main spindle box; 3. a tailstock; 4. a gantry; 5. a tool holder mechanism; 6. an accommodating space; 7. a drive member; 71. a lifting rod; 72. a hydraulic cylinder; 73. a support plate; 8. a screw rod transmission part; 81. a first screw rod; 82. a motor; 9. a gear transmission mechanism; 91. a limiting seat; 92. a first gear; 93. a rotating shaft; 931. a first shaft; 932. a second shaft; 933. a sliding groove; 934. a slide bar; 94. a tooth socket; 10. accommodating grooves; 11. a support roller; 12. a ball bearing; 13. a mounting seat; 14. a chute; 15. a support frame; 16. a belt transmission mechanism.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a gantry lathe, which refers to fig. 1 and 2 and comprises a lathe body 1, wherein a spindle box 2 and a tailstock 3 are respectively arranged at two ends of the lathe body 1 in the length direction, and the tailstock 3 is connected to the lathe body 1 in a sliding manner; the lathe bed 1 is also provided with a portal frame 4 between the spindle box 2 and the tailstock 3, the portal frame 4 is connected to the lathe bed 1 in a sliding mode, and the portal frame 4 is provided with a tool rest mechanism 5. The middle part of the lathe bed 1 in the width direction is sunken to form an accommodating space 6, two groups of supporting frames 15 are arranged in the accommodating space 6 along the length direction of the lathe bed 1, and arc-shaped accommodating grooves 10 are formed at the upper end openings of the supporting frames 15; the driving pieces 7 are respectively connected below the supporting frames 15. Axle type part is through hanging hoist and mount place holding tank 10 in back, driving piece 7 orders about support frame 15 and drives the vertical displacement of axle type part, slides butt axle type part displacement through tailstock 3 again, with axle type part one end butt to headstock 2 on, accomplishes the installation of axle type part, carries out turning work again.

Referring to fig. 2, the radius of the accommodating groove 10 is larger than the maximum radius of the shaft parts that can be machined by the lathe; a pair of supporting rollers 11 are symmetrically fixed on the inner side wall of the accommodating groove 10 along the axis, the supporting rollers 11 are arranged parallel to the axis of the accommodating groove 10, and a plurality of balls 12 are embedded in the peripheral wall of the supporting rollers 11. The shaft parts are abutted against the supporting rollers 11 on the two sides, so that the shaft parts are in a centered state.

Referring to fig. 2, the driving member 7 includes two vertically disposed lifting rods 71, and the two lifting rods 71 are fixed at the lower end of the supporting frame 15 and arranged along the width direction of the bed 1; the lower ends of the two lifting rods 71 are fixed on the same supporting plate 73; a hydraulic cylinder 72 is vertically arranged at the bottom of the accommodating space 6, and a telescopic shaft of the hydraulic cylinder 72 is fixed with the lower end of a support plate 73; and the hydraulic cylinder 72 is communicated with the hydraulic pump station through a pipeline, so that the hydraulic cylinder 72 drives the support frame 15 to vertically displace.

Referring to fig. 2 and 3, a gear transmission mechanism 9 is further arranged between the lifting rods 71 of the two support frames 15; the gear transmission mechanism 9 comprises a limiting seat 91, the limiting seat 91 is hollow, and two ends of the limiting seat 91 are connected with the side wall of the accommodating space 6; two through holes vertically penetrate through the limiting seat 91, and the lifting rods 71 correspond to the through holes one by one and penetrate through the through holes; the peripheral wall of the lifting rod 71 is provided with a plurality of tooth grooves 94 along the axis direction, the limiting seat 91 is internally and rotatably connected with a first gear 92 meshed with the tooth grooves 94, a rotating shaft 93 is coaxially fixed between the first gears 92 below the two supporting frames 15, and the rotating shaft 93 penetrates through the limiting seat 91 and is rotatably connected with the limiting seat 91. When the lifting rod 71 vertically displaces, the first gear 92 is driven to rotate, the first two gears 92 synchronously rotate, and synchronous lifting of the lifting rod 71 is achieved.

Referring to fig. 1 and 2, in the present embodiment, a hydraulic cylinder 72 on a side close to the headstock 2 is fixed in the accommodating space 6; the other hydraulic cylinder 72 is slidably connected in the accommodating space 6, and the support frame 15 corresponding to the hydraulic cylinder 72 moves along with the other hydraulic cylinder, so that guide grooves are horizontally formed in two side walls of the accommodating space 6, and slide rods inserted in the guide grooves are fixed on two sides of the corresponding limiting seat 91; referring to fig. 3 and 5: simultaneously, pivot 93 includes axle one 931 and axle two 932, and axle one 931 is fixed with gear one 92 with axle two 932 one end of keeping away from each other respectively, and a sliding tray 933 has been seted up towards the one end of axle two 932 to axle one 931 coaxial, and the one end of axle two 932 is fixed with slide bar 934, and slide bar 934 pegs graft in sliding tray 933, and slide bar 934 and the hexagon setting of sliding tray 933's longitudinal section for equidimension. The lathe bed 1 is further provided with a screw rod transmission piece 8, the hydraulic cylinder 72 is driven by the screw rod transmission piece 8 to drive the support frames 15 to move along the length direction of the lathe bed 1, and the distance between the two support frames 15 is changed.

Referring to fig. 4, the mounting base 13 is fixed at the lower end of the sliding hydraulic cylinder 72, the section of the mounting base 13 along the width direction of the bed 1 is in a concave shape with an upward opening, and the hydraulic cylinder 72 is fixed in a groove of the mounting base 13; the screw rod transmission piece 8 comprises two screw rods I81 which are arranged in parallel with the length direction of the lathe bed 1, the two screw rods I81 are rotatably connected to the lathe bed 1 and are respectively positioned on two sides of the mounting seat 13 along the width direction of the lathe bed 1 and are in threaded fit with the mounting seat 13, a rotating seat is vertically fixed at the bottom of the accommodating space 6 corresponding to the screw rods I81, and one end of the screw rod I81 penetrates out of the mounting seat 13 to be rotatably connected with the rotating seat. The lathe bed 1 is also fixed with a motor 82, an output shaft of the motor 82 is coaxially fixed with one screw rod 81, and a belt transmission mechanism 16 is arranged between the two screw rods 81. When the motor 82 drives the first screw rods 81 to rotate, the first screw rods 81 can be driven to synchronously rotate, and the mounting base 13 drives the hydraulic cylinder 72 to linearly reciprocate.

The belt transmission mechanism 16 includes two rotating wheels, the two rotating wheels are coaxially fixed with the first screw rod 81, and the same belt is wound around the two rotating wheels, so as to realize the synchronous rotation of the two first screw rods 81.

Wherein, for the slip of convenience of installation seat 13, spout 14 has still been seted up to accommodation space 6 bottom, and spout 14 is along 1 length direction parallel arrangement of lathe bed, and the bottom of installation seat 13 is pegged graft in spout 14, is the linear displacement work along spout 14.

The implementation principle of the gantry lathe in the embodiment of the application is as follows: when axle type part is installed, use the line to hang earlier and place axle type part hoist and mount in holding tank 10 of two support frames 15, remove the connection of line to hang, pneumatic cylinder 72 starts again, order about the vertical displacement of support frame 15, make its axle type part keep coaxial with headstock 2 and tailstock 3, then lathe own actuating mechanism orders about 3 displacements of tailstock, 3 displacement in-process of tailstock, one end and axle type part butt, and drive axle type part linear displacement, until axle type part one end and headstock 2 butt, then headstock 2 carries out spacingly with 3 axle type parts of tailstock, pneumatic cylinder 72 orders about support frame 15 displacement down and keeps away from axle type part, headstock 2 drives axle type part at last and rotates, portal frame 4 takes 5 axle type parts of knife rest mechanism to carry out turning work.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A gantry lathe comprises a lathe body (1), a spindle box (2) and a tailstock (3) which are positioned on two sides of the lathe body (1) in the length direction, wherein the tailstock (3) is connected to the lathe body (1) in a sliding mode, a gantry (4) is further connected to the lathe body (1) in a sliding mode, and a tool rest mechanism (5) for machining a workpiece is connected to the gantry (4); the method is characterized in that: the lathe bed (1) is still provided with at least two sets of support frames (15) on being in one section between headstock (2) and tailstock (3), and multiunit support frame (15) are arranged along lathe bed (1) length direction, support frame (15) upper end sets up formation holding tank (10) for the arc opening, lathe bed (1) still is provided with driving piece (7) of drive support frame (15) vertical displacement.

2. A gantry lathe as claimed in claim 1, characterized in that: the holding tank (10) is provided with at least two groups of supporting rollers (11) along the circumferential direction, and balls (12) are embedded on the circumferential wall of each supporting roller (11).

3. A gantry lathe as claimed in claim 1, characterized in that: the driving piece (7) comprises a lifting rod (71) vertically connected below the supporting frame (15) and a hydraulic cylinder (72) vertically connected with the lathe bed (1), and a telescopic shaft of the hydraulic cylinder (72) is connected with the lifting rod (71); a gear transmission mechanism (9) is connected between the lifting rods (71) of the multiple groups of supporting frames (15).

4. A gantry lathe as claimed in claim 3, wherein: the gear transmission mechanism (9) comprises a limiting seat (91) sleeved outside the lifting rod (71), and the limiting seat (91) is connected to the lathe bed (1) and is provided with a through hole for the lifting rod (71) to pass through; the limiting seat (91) is internally and rotatably connected with a first gear (92) corresponding to the lifting rod (71), the peripheral wall of the lifting rod (71) is provided with a tooth groove (94) meshed with the first gear (92) along the axis of the lifting rod, and a rotating shaft (93) is coaxially connected between the first gears (92) corresponding to the multiple groups of supporting frames (15).

5. A gantry lathe according to claim 4, characterized in that: the two groups of supporting frames (15) are arranged, the lathe bed (1) is provided with a screw rod transmission piece (8) for driving one group of supporting frames (15) to move along the length direction of the lathe bed (1), the rotating shaft (93) comprises a first shaft (931) and a second shaft (932) which are coaxially arranged and are mutually inserted and matched, and the second shaft (932) can only linearly slide relative to the first shaft (931); and the ends, far away from each other, of the first shaft (931) and the second shaft (932) are respectively and coaxially connected with the first gear (92).

6. A gantry lathe according to claim 5, characterized in that: the screw rod transmission piece (8) comprises a screw rod I (81), and the screw rod I (81) is parallel to the length direction of the lathe bed (1) and is rotatably connected to the lathe bed (1); the bottom of the hydraulic cylinder (72) is provided with a mounting seat (13), the first screw rod (81) penetrates through the mounting seat (13) and is in threaded fit with the mounting seat (13), and the lathe bed (1) is further provided with a motor (82) connected with the first screw rod (81).

7. The gantry lathe of claim 6, wherein: the longitudinal section of the mounting seat (13) is a concave shape with an upward opening, and the hydraulic cylinder (72) is mounted in a groove formed in the mounting seat (13); two first screw rods (81) are arranged along the width direction of the mounting seat (13), and a belt transmission mechanism (16) is connected between the two first screw rods (81).

8. The gantry lathe of claim 6, wherein: the lathe bed (1) is provided with a sliding groove (14) along the length direction of the lathe bed, and the bottom of the mounting seat (13) is embedded in the sliding groove (14).