Multi-cutter-position metal cutting numerical control lathe
Technical Field
The invention relates to the technical field of multi-cutter numerical control lathes, in particular to a multi-cutter numerical control lathe for metal cutting.
Background
The numerical control lathe spindle adopts the procedures of manual control, electromechanical integrated design, attractive appearance, reasonable structure, wide application and convenient operation, can realize automatic control, can lathe the inner and outer circles, the end faces, the grooving, any conical surface, the spherical surface, the conical threads and the like of various parts, and is suitable for mass production. The numerical control lathe body guide rail adopts superaudio quenching, has strong process and wear resistance, high precision, advanced main shaft system structure, stable rotating speed and higher cutting performance.
For example, patent publication number CN107855542a discloses a horizontal multi-cutter-position numerically controlled lathe, the lathe body has a rotatable spindle, a processing chamber is located on one side of the spindle, a control panel is located right above the spindle, a display screen is fixedly installed on the outer surface of the front end of the control panel, a base is fixedly installed on the outer surface of the bottom end of the lathe body, a sliding rail is fixedly installed on the inner bottom end of the processing chamber, a sliding block is movably installed on the outer surface of the upper end of the sliding rail, and a tailstock is located above the sliding block. This many tool positions of horizontal numerical control lathe album bits case is through setting up the size of a tool position and No. two tool positions inconsistent to can effectually clip the cutter of different models, and then better treat the part of processing and decorate the processing, realize many tool positions and process it.
However, by arranging a plurality of cutters on the rotary cutter frame in parallel with each other, simultaneous processing of the plurality of cutters on the workpiece cannot be realized, and when the cutter is fed, the feeding amounts of the plurality of cutters are the same, which greatly prevents the application range of the plurality of cutters. For this reason, a plurality of cutters are usually arranged in the axial direction of the main shaft to perform synchronous machining, for example, the patent with publication number CN110508832a discloses a multi-cutter efficient synchronous dynamic balance turning machine tool and a machining method, and belongs to the technical field of machine manufacturing. The tail seat is fixed at the tail part of the lathe bed, the electric spindle system is fixed at the head part of the lathe bed through a first screw, the guide rail is fixed at two sides of the middle part of the lathe bed, the numerical control scale grating is fixed at one side of the middle part of the lathe bed, the workbench driving module is fixed at the middle part of the lathe bed, and the workbench module is fixed on the workbench driving module. The invention has the advantages that the three cutters are installed and fixed at 120-degree intervals, when the three cutters are simultaneously processed, the acting forces of the cutters to the workpiece to be processed are mutually offset, the self-supporting and dynamic balance can be realized, the stress deformation of the workpiece to be processed is reduced, the processing precision is increased, the workload is reduced, the time is saved, the efficiency is improved, and the machine tool has higher universality.
In the process of fine machining, the angle of the cutter is often required to be adjusted so as to machine a corresponding structure on a workpiece, however, when the cutter is installed, the cutter is fixed in a mode of opposite clamping, and the angle of the cutter is fixed in the clamping direction, so that the numerical control machine tool is not suitable for the fine machining process.
Disclosure of Invention
The invention aims at solving the problems in the prior art that the prior numerical control machine tool is fixed by adopting a mode of opposite clamping when the cutter is installed, and the angle of the cutter is fixed when the cutter is clamped in the clamping direction, so that the numerical control machine tool is not suitable for part of fine machining processes.
In order to solve the technical problems, the invention adopts the following technical scheme that the multi-cutter-position metal cutting numerical control lathe comprises:
A lathe body;
the main shaft is rotatably arranged on the lathe body;
The annular piece is coaxially arranged with the main shaft;
The tool clamping mechanism comprises a sliding seat, clamping seats, clamping plates and a limiting driving assembly, wherein the sliding seat is slidably arranged on the annular piece along the radial direction of the annular piece along the sliding seat, the clamping seats are rotatably arranged on the sliding seat, the clamping plates are slidably arranged on the clamping seats, the clamping plates are arranged in a circular array with the axis of the clamping seats as the center of a circle, the limiting driving assembly can drive the clamping plates to move so as to clamp a tool, and the limiting driving assembly can also limit the clamping seats to rotate
And the feeding mechanism can drive the sliding seat to feed in the axial direction and the radial direction of the main shaft.
The limiting driving assembly comprises a rotating shaft, a transmission unit and a connecting unit, wherein the rotating shaft is rotatably inserted into the clamping seat, a plurality of slots are formed in the sliding seat, the slots are arranged in a circular array with the circle center along the axis of the clamping seat, the slots are positioned on the stroke of the rotating shaft, when the rotating shaft is inserted into the slots, the connecting unit limits the rotating shaft to rotate, and the rotation of the rotating shaft drives the clamping plate to move through the transmission unit.
Preferably, the two rotating shafts and the transmission unit are coaxially arranged, and the connecting unit is connected with the two rotating shafts so that the two rotating shafts synchronously rotate and move oppositely.
The connecting unit comprises a swivel, connecting shafts, connecting plates, sliding blocks and supporting pieces, wherein the swivel is rotatably arranged on a clamping seat and is coaxially arranged with a rotating shaft, the two connecting plates are mutually crossed, the middle parts of the two connecting plates, which are crossed, are hinged with the swivel through the connecting shafts, the connecting shafts are arranged along the radial direction of the swivel, each rotating shaft is provided with the two sliding blocks through the supporting pieces, the two sliding blocks are arranged in one-to-one correspondence with the two connecting plates and are slidably arranged on the connecting plates along the length direction of the corresponding connecting plates, the sliding blocks on each connecting plate are respectively arranged on two sides of the connecting shafts, the clamping seat is provided with a plurality of inclined grooves which are in plug-in fit with the side edges of the supporting pieces, the inclined grooves are arranged in a circular array by taking the axis of the rotating shaft as the center of circle, and the inclined grooves are positioned on the travel of the supporting pieces.
Preferably, the connecting unit further comprises an elastic piece, wherein the elastic piece and the rotating shaft are arranged in parallel, and two ends of the elastic piece are respectively hinged with the end parts of the two connecting plates.
Preferably, the rotating shaft far away from the slot is provided with a hexagonal groove, and the hexagonal groove is positioned at one side of the rotating shaft far away from the slot.
The transmission unit comprises a threaded rod, a first bevel gear and a second bevel gear, wherein the first bevel gear and the second bevel gear are rotatably arranged on the clamping seat and meshed with each other, the rotating shaft is arranged along the axial direction of the clamping seat so as to drive the first bevel gear to rotate, the threaded rod is arranged along the radial direction of the clamping seat and is mutually perpendicular to the rotating shaft, the threaded rod is in threaded connection with the clamping seat, one end of the threaded rod is rotatably connected with the clamping plate, the threaded rod is coaxially arranged with the second bevel gear, and the threaded rod is in sliding insertion connection with the second bevel gear in the axial direction.
The annular piece comprises a circular ring and side plates, wherein the side plates are respectively arranged at two ends of the circular ring, the circular ring is rotatably connected with the two side plates, the sliding seat is slidably arranged on the circular ring, and the feeding mechanism drives the side plates to move in the axial direction of the spindle.
Preferably, the feeding mechanism comprises an axial feeding mechanism and a radial feeding mechanism, the annular piece is arranged on the lathe body through the axial feeding mechanism, the radial feeding mechanism and the cutter clamping mechanism are arranged in one-to-one correspondence, and the radial feeding mechanism drives the sliding seat to slide.
Preferably, the lathe further comprises a chuck and a tailstock, wherein the chuck is arranged on the main shaft, the tailstock is arranged on the lathe body in a sliding manner along the length direction of the main shaft, and the tailstock and the main shaft are coaxially arranged.
Compared with the prior art, the invention has at least the following advantages:
1. the angle of the cutter can be adjusted to adapt to different processing technologies. According to the invention, the cutter is placed among the plurality of clamping plates, the limiting driving assembly is controlled to act, the limiting driving assembly drives the clamping plates to move, so that the cutter is clamped, the clamping seat is rotated, the angle of the cutter is adjusted through the clamping seat, and after the angle adjustment of the cutter is finished, the rotation of the clamping seat is limited through the limiting driving mechanism, so that the installation and adjustment of the cutter can be finished.
2. The workpiece can be cut simultaneously by a plurality of cutters. The CNC system controls the rotating speed of the spindle to drive the workpiece to rotate when the workpiece is processed, the CNC system controls the feeding mechanism to act, the feeding mechanism controls the tool clamping mechanism of the corresponding tool to enable the sliding seat to slide, so that feeding motion of the tool in the X axial direction is achieved, a plurality of tools are driven to cut the workpiece at the same time, the annular piece is controlled to move in the length direction of the spindle, so that the plurality of tools are driven to reciprocate in the length direction of the spindle, feeding motion in the Z axial direction is achieved, and cutting of the workpiece is achieved.
3. Through the setting of spacing drive assembly, not only can drive the grip block removes and carries out the centre gripping to the cutter, can also restrict the grip slipper and rotate. The clamping device comprises a clamping plate, a rotating shaft, a connecting unit, a clamping seat, a rotating shaft, a connecting unit and a connecting unit, wherein the clamping plate is arranged on the clamping plate, the rotating shaft is connected with the clamping seat, the clamping plate is arranged on the connecting unit, the rotating shaft is connected with the connecting unit, the clamping plate is connected with the connecting unit, and the connecting unit is connected with the connecting unit.
4. Through the setting of the connecting unit, the two rotating shafts can be driven to synchronously rotate and oppositely move, only one rotating shaft is required to be controlled, the process of adjusting and clamping the cutters is greatly simplified, the installation efficiency of a plurality of cutters is improved, and through the setting of the connecting unit, the rotation of the rotating shafts can be limited, and the loosening of the clamping plate can be effectively prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described. Throughout the drawings, the elements or portions are not necessarily drawn to actual scale.
Fig. 1 is a perspective view of a multi-cutter-position metal cutting numerically controlled lathe according to the present embodiment.
Fig. 2 is a perspective view of the ring and the tool holding mechanism provided in this embodiment.
Fig. 3 is a cross-sectional view of the tool holding mechanism provided in this embodiment.
Fig. 4 is a schematic structural diagram of a connection unit according to the present embodiment.
The numerical control lathe comprises a lathe body, a spindle, a tail seat, a chuck, a 5 axial feeding mechanism, a 6 annular piece, a 61 annular ring, a 62 annular ring, a 7 annular plate, a tool clamping mechanism, a 71 annular sliding seat, a 711 annular groove, a 72 annular groove, a clamping seat, a 721 annular groove, a 722 annular groove, a containing groove, a 73 annular clamping plate, a 74 annular limiting driving assembly, a 741 annular rotating shaft, a 742 annular threaded rod, a 743 annular groove, a first bevel gear, 744 annular groove, a second bevel gear, 745 annular groove, 75 annular groove, a connecting unit, 751 annular rotating ring, 752 annular connecting shaft, 753 annular connecting plate, 754 annular sliding block, 755 annular supporting plate, 756 annular supporting plate and an elastic piece.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1-4, the embodiment of the invention provides a multi-tool-position metal cutting numerical control lathe, which comprises a lathe body 1, a main shaft 2, an annular piece 6, a tool clamping mechanism 7 and a feeding mechanism, wherein the main shaft 2 is rotatably arranged on the lathe body 1, the annular piece 6 and the main shaft 2 are coaxially arranged, the tool clamping mechanism 7 is arranged at intervals along the circumferential direction of the annular piece 6, the tool clamping mechanism 7 comprises a sliding seat 71, a clamping seat 72, clamping plates 73 and a limiting driving assembly 74, the sliding seat 71 is slidably arranged on the annular piece 6 along the radial direction of the annular piece 6 along the sliding seat 71, the clamping seat 72 is rotatably arranged on the sliding seat 71, the clamping plates 73 are slidably arranged on the clamping seat 72, the clamping plates 73 are arranged in a circular array with the axis of the clamping seat 72 as a circle center, one end, close to the axis of the annular piece 6, of the clamping seat 72 is provided with a containing groove 722 for containing the clamping plates 73, the limiting driving assembly 74 can drive the clamping plates 73 to move so as to clamp a tool, the limiting driving assembly 74 can also limit the rotation of the clamping seat 72 along the radial direction of the annular piece 6, and the feeding mechanism can drive the sliding seat 71 in the axial direction and the radial direction of the axial direction of the main shaft 2.
In the specific implementation, the cutter is placed among the plurality of clamping plates 73, and then the limiting driving assembly 74 is controlled to act, and the limiting driving assembly 74 drives the clamping plates 73 to move so as to clamp the cutter, and then the clamping seat 72 is rotated to adjust the angle of the cutter, after the angle adjustment of the cutter is completed, the rotation of the clamping seat 72 is limited by the limiting driving mechanism, so that the installation and adjustment of the cutter can be completed;
When a workpiece is processed, the CNC system controls the rotating speed of the spindle 2, the spindle 2 drives the workpiece to rotate, the CNC system controls the feeding mechanism to act, the feeding mechanism controls the cutter clamping mechanism 7 corresponding to the cutters to slide so as to realize the feeding motion of the cutters in the X axial direction, drive a plurality of cutters to cut the workpiece at the same time, and then control the annular piece 6 to move in the length direction of the spindle 2 so as to drive the plurality of cutters to reciprocate in the length direction of the spindle 2, so that the feeding motion in the Z axial direction is realized, and the cutting of the workpiece is realized.
Referring to fig. 1-4, in other embodiments, the limit driving assembly 74 includes a rotation shaft 741, a transmission unit and a connection unit 75, the rotation shaft 741 is rotatably inserted into the clamping seat 72, the sliding seat 71 is provided with a plurality of slots 711, the slots 711 are arranged in a circular array with a circle center along an axis of the clamping seat 72, the slots 711 are located on a stroke of the rotation shaft 741, when the rotation shaft 741 is inserted into the slots 711, the connection unit 75 limits the rotation of the rotation shaft 741, and the rotation of the rotation shaft 741 drives the clamping plate 73 to move through the transmission unit. In specific implementation, the rotating shaft 741 is rotated, the rotating shaft 741 drives the clamping plate 73 to move through the transmission unit, so that the clamping and fixing of the clamping plate 73 are realized, the angle of the cutter is adjusted through rotating the clamping seat 72, after the adjustment is finished, the rotating shaft 741 slides and rotates, the rotating shaft 741 is inserted into the corresponding slot 711, the connecting unit 75 is driven to act by the rotating shaft 741, and the connecting unit 75 limits the rotating shaft 741 to rotate, so that the position of the clamping plate 73 can be locked.
Referring to fig. 1 to 4, in other embodiments, two shafts 741 and a transmission unit are provided, the two shafts 741 are coaxially disposed, and a connection unit 75 connects the two shafts 741 such that the two shafts 741 rotate synchronously and move oppositely. In particular, by providing two transmission units, a pushing force can be applied to both ends of one clamping plate 73 by the transmission units, so that the tool can be clamped more stably than a pushing force.
Referring to fig. 1 to 4, in other embodiments, the connection unit 75 includes a swivel 751, a connection shaft 752, connection plates 753, sliders 754 and a supporting plate 755, the swivel 751 is rotatably mounted on the clamping seat 72, the swivel 751 and the rotation shaft 741 are coaxially arranged, the two connection plates 753 are arranged to cross each other, the middle parts of the two connection plates 753 crossing each other are hinged with the swivel 751 through the connection shaft 752 and the connection shaft 752 is arranged in the radial direction of the swivel 751, the two sliders 754 are mounted on each rotation shaft 741 through the supporting plate 755, the two sliders 754 are arranged in one-to-one correspondence with the two connection plates 753, the sliders 754 are slidably mounted on the connection plates 753 in the length direction of the corresponding connection plates 753, the sliders 754 on each connection plate 753 are respectively arranged on two sides of the connection shaft 752, a plurality of inclined grooves 721 in plug-in fit with the side edges of the supporting plate 755 are arranged on the clamping seat 72, the inclined grooves 721 are arranged in a circular array with the axis of the rotation shaft 741 as a center, and the inclined grooves 721 are located on the stroke of the supporting plate 755.
In specific implementation, the rotating shaft 741 is rotated, the rotating shaft 741 drives the supporting plate 755 fixedly connected with the rotating shaft 741 to rotate, the supporting plate 755 drives the sliding block 754 fixedly connected with the supporting plate 755 to rotate, the sliding block 754 drives the corresponding connecting plate 753 to rotate, the connecting plate 753 drives the sliding block 754, the supporting plate 755 and the rotating shaft 741 at the other side to rotate around the rotating ring 751 in sequence, so as to drive the threaded rod 742 to push the clamping plate 73 to clamp the cutter, when the angle of the clamping seat 72 needs to be regulated, the rotating shaft 741 is pressed, the supporting plate 755 pushes the sliding block 754 to slide, the sliding block 754 drives the connecting plate 753 to rotate, and then drives the rotating shaft 741 at the other side to move inwards, so that the rotating shaft 741 can be pulled out of the slot 711, limiting the clamping seat 72 can be regulated, after regulation is completed, an outward force is applied to the rotating shaft 741 can be reinserted into the nearest slot 711, so that the limiting of the clamping seat 72 is realized, and after the clamping plate 73 clamps and fixes the cutter, the rotating shaft 741, so that the supporting plate 755 moves into the nearest chute 721, so that the rotating plate 721 is prevented from loosening and limiting the rotating. Therefore, through the arrangement of the connection unit 75, the two rotating shafts 741 can be driven to synchronously rotate and move oppositely, only one rotating shaft 741 needs to be controlled, the flow of tool adjustment and clamping is greatly simplified, the rotation of the rotating shafts 741 can be limited by the connection unit 75, and the clamping plate 73 can be effectively prevented from loosening.
Referring to fig. 1-4, in other embodiments, the connection unit 75 further includes an elastic member 756, the elastic member 756 and the rotation shaft 741 are disposed parallel to each other, and both ends of the elastic member 756 are respectively hinged to ends of the two connection plates 753. In particular, when the rotating shaft 741 is pressed, the included angle between the two connecting plates 753 is changed, so that the two connecting plates 753 apply a pressure to the elastic element 756, when the rotating shaft 741 is stopped, the elastic element 756 can push the two connecting plates 753 to rotate reversely, and further apply a pushing force to the two rotating shafts 741, so that one rotating shaft 741 is inserted into the corresponding slot 711. Specifically, the elastic member 756 includes a first housing, a second housing and a spring, where the first housing and the second housing are all in a column shape and have one end open, one end of the opening of the first housing is slidably inserted into the other housing to enclose a cavity for accommodating the spring, the first housing is hinged with one of the connection plates 753, and the second housing is hinged with the other connection plate 753, so that the spring can be effectively limited to prevent the spring from bending. Further, a hexagonal groove 745 is formed on the rotating shaft 741 far from the slot 711, and the hexagonal groove 745 is located at one side of the rotating shaft 741 far from the slot 711. Through the setting of hexagonal groove 745 to can be more convenient adopt the hexagonal spanner to rotate pivot 741, and when adopting the hexagonal spanner, can directly press down and rotate pivot 741, need not to change other mounting tool again, reduce the flow of cutter centre gripping and regulation.
Referring to fig. 1 to 4, in other embodiments, the transmission unit includes a threaded rod 742, a first bevel gear 743 and a second bevel gear 744, the first bevel gear 743 and the second bevel gear 744 are rotatably mounted on the holder 72, the first bevel gear 743 and the second bevel gear 744 are engaged, a rotation shaft 741 is disposed along an axial direction of the holder 72 to drive the first bevel gear 743 to rotate, the threaded rod 742 is disposed along a radial direction of the holder 72, the threaded rod 742 is perpendicular to the rotation shaft 741, the threaded rod 742 is in threaded connection with the holder 72, one end of the threaded rod 742 is rotatably connected with the holder 73, the threaded rod 742 is coaxially disposed with the second bevel gear 744, and the threaded rod 742 is slidably inserted into the second bevel gear 744 in the axial direction.
In specific implementation, a plurality of clamping grooves are formed in the length direction of the threaded rod 742, the clamping grooves are uniformly arranged at intervals along the circumferential direction of the threaded rod 742, a clamping block which is in sliding fit with the clamping grooves is fixed in the second bevel gear 744, so that the second bevel gear 744 can slide relative to the threaded rod 742 and the rotation of the threaded rod 742 is not affected, the rotating shaft 741 drives the first bevel gear 743 to rotate, the first bevel gear 743 drives the second bevel gear 744 to rotate, the second bevel gear 744 drives the threaded rod 742 to rotate, the threaded rod 742 pushes the clamping plate 73 to move towards the cutter under the action of threads so as to clamp the cutter, and the control direction can be changed through the arrangement of the first bevel gear 743 and the second bevel gear 744, so that the rotating shaft 741 and the cutter are positioned on the same side of the clamping seat 72, and the cutter is convenient to install.
Referring to fig. 1 to 4, in other embodiments, the ring member 6 includes a circular ring 61 and side plates 62, the side plates 62 are provided at both ends of the circular ring 61, the circular ring 61 is rotatably connected to the two side plates 62, a slide seat 71 is slidably mounted on the circular ring 61, and the feed mechanism drives the side plates 62 to move in the axial direction of the spindle 2. During implementation, the tool clamping mechanism 7 on the circular ring 61 can be rotated by rotating the circular ring 61, so that the tool on the circular ring 61 is convenient to approach an operator, and the tool can be disassembled and adjusted more conveniently.
Referring to fig. 1-4, in other embodiments, the feeding mechanism comprises an axial feeding mechanism 5 and a radial feeding mechanism, the annular piece 6 is mounted on the lathe body 1 through the axial feeding mechanism 5, the radial feeding mechanism and the cutter clamping mechanism 7 are arranged in a one-to-one correspondence, and the radial feeding mechanism drives the sliding seat 71 to slide. In the concrete implementation, the CNC system controls the axial feeding mechanism 5 to act so as to drive the cutter to axially feed, and the CNC system controls the radial feeding mechanism to act so as to drive the cutter to feed.
Referring to fig. 1-4, in a further embodiment, the lathe further comprises a chuck 4 and a tailstock 3, wherein the chuck 4 is mounted on the spindle 2, the tailstock 3 is slidably mounted on the lathe body 1 along the length direction of the spindle 2, and the tailstock 3 is coaxially arranged with the spindle 2. In the concrete implementation, one end of the workpiece is clamped on the main shaft 2 through the chuck 4, then the workpiece passes through the annular piece 6 and is abutted against the other end of the workpiece through the tailstock 3, so that the workpiece can be clamped and fixed.
The present invention is not limited in any way by the above-described preferred embodiments, but is not limited to the above-described preferred embodiments, and any person skilled in the art will appreciate that the present invention can be embodied in the form of a program for carrying out the method of the present invention, while the above disclosure is directed to equivalent embodiments capable of being modified or altered in some ways, it is apparent that any modifications, equivalent variations and alterations made to the above embodiments according to the technical principles of the present invention fall within the scope of the present invention.