CN111957990A

CN111957990A - Numerical control machine tool

Info

Publication number: CN111957990A
Application number: CN202010803125.3A
Authority: CN
Inventors: 储召发
Original assignee: Taizhou Songpu Cnc Technology Co ltd
Current assignee: Taizhou Songpu Cnc Technology Co ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2020-11-20

Abstract

The application discloses digit control machine tool relates to the digit control machine tool field, and it includes the frame, the both ends of frame are provided with feed system and headstock respectively, the headstock is improved level and independent rotation is connected with a plurality of main shafts that are used for supplying the cutter to fix, and main shaft horizontal sliding connection in the headstock. The application has the following advantages and effects: through the spindle box for arranging the spindles which are assembled with a plurality of independent works, independent selection and work of different tools are achieved, non-stop selection of the tools and non-stop processing of workpieces are achieved, and the processing efficiency of the workpieces is improved.

Description

Numerical control machine tool

Technical Field

The application relates to the field of numerical control machines, in particular to a numerical control machine tool.

Background

The main shaft part of a numerically controlled machine tool refers to a shaft on the machine tool that drives a workpiece or a tool to rotate, and generally comprises a main shaft, a bearing, a transmission part and the like, and is mainly used for supporting a transmission part and transmitting motion and torque in the machine.

In the related art, a numerically-controlled machine tool mainly uses a feeding system to clamp and fix a workpiece, controls the workpiece to move along the directions of an X axis, a Y axis and a Z axis, and controls a tool to rotate by using a spindle box so as to machine the workpiece.

However, when a complex workpiece is machined, a plurality of tools are generally required to be used for machining different positions of the workpiece, and when a tool is replaced by a numerical control machine in the related art, the whole machine needs to be stopped, and then the tool needs to be detached and replaced, so that the machining efficiency of the workpiece is affected and needs to be improved.

Disclosure of Invention

In order to improve the machining efficiency of workpieces, the application aims to provide a numerical control machine tool.

The application provides a digit control machine tool adopts following technical scheme: the utility model provides a numerical control machine tool, includes the frame, the both ends of frame are provided with feed system and headstock respectively, the headstock is improved level and independent rotation and is connected with a plurality of main shafts that are used for supplying the cutter fixed, and main shaft horizontal sliding connection in the headstock.

By adopting the technical scheme, when the numerical control machine tool is used for processing a workpiece, the workpiece is clamped and fixed by using the feeding system, different cutters are fixed on different main shafts at the same time, and all the main shafts are controlled to rotate synchronously. When a workpiece is machined, the independent spindle is controlled to drive the cutter to extend out, and then the feeding system is used for controlling the workpiece to be close to the cutter, so that the workpiece is machined. And then, the feeding system is used for controlling the workpiece to move reversely, controlling the working spindle and the cutter to retreat, controlling the exceptional spindle and the cutter to stretch out, controlling the workpiece to be close to the cutter again by using the feeding system, and sequentially reciprocating to realize the machining of the workpiece. Therefore, the spindle box for assembling the spindles working independently is arranged, so that independent selection and working of different tools are realized, non-stop selection of the tools and non-stop processing of workpieces are realized, and the processing efficiency of the workpieces is improved.

The present application may be further configured in a preferred example to: the spindle comprises a spindle sleeve, an installation shaft is horizontally and slidably connected in the spindle sleeve, a spindle is horizontally and rotatably connected in the installation shaft, and end covers are arranged between the spindle and two ends of the installation shaft; a tool apron for fixing a tool is arranged at one end, positioned outside the installation shaft, of the mandrel, and a sliding shaft is arranged at the other end, positioned outside the installation shaft, of the mandrel in an extending manner; the outer wall of the sliding shaft is provided with a driving shaft, the sliding shaft is horizontally and slidably connected with the driving shaft, the outer wall of the sliding shaft is provided with a spline, and the inner wall of the driving shaft is provided with a key groove for the spline to slide; the spindle box comprises a main seat, a front main plate and a rear main plate are vertically arranged on the main seat side by side, a plurality of rows of front mounting hole groups are arranged on the front main plate in a penetrating manner, each row of front mounting hole groups comprises a plurality of front holes arranged at intervals, and each front hole is used for the shaft sleeve to be embedded and fixed; a plurality of rows of rear mounting hole groups aligned with the front mounting hole group are arranged on the rear main board in a penetrating manner, each row of rear mounting hole groups comprises a plurality of rear holes arranged at intervals, and each rear hole is used for the driving shaft to be embedded; two adjacent rows a plurality of on the preceding mounting hole group preceding hole is the dislocation form and sets up, still inlay in the back hole and establish and be fixed with the fixing base, and the drive shaft rotate connect in the fixing base.

Through adopting above-mentioned technical scheme, when using above-mentioned main shaft, the control drive shaft dead axle is rotatory, and under the cooperation of spline and keyway, control sliding shaft and dabber synchronous revolution this moment, and then realize the rotation control of blade holder and cutter. When the feed of the cutter is adjusted, the horizontal slippage of the installation shaft is controlled, and at the moment, the synchronous horizontal slippage of the mandrel and the sliding shaft is controlled under the matching action of the end covers. And in the sliding process of the sliding shaft, the sliding shaft cannot be separated from the driving shaft, so that the rotation and the sliding of the sliding shaft are synchronously carried out, namely the feeding control of the tool apron and the tool in the rotation process is realized. Therefore, through the arrangement of the core shaft and the sliding shaft which slide and rotate independently, the whole main shaft does not need to be driven to move synchronously to feed, free feeding control in rotation of the tool apron and the tool is achieved, and the use convenience of the main shaft is improved. When the spindle box is used, a plurality of spindles are fixed on the spindle box, and different tools are fixed on tool bases of different spindles. Therefore, when the workpiece is machined, the driving shafts in all the main shafts are controlled to rotate synchronously, and synchronous rotation control of all the sliding shafts and the core shaft is realized. When a workpiece needs to be machined by using a specific cutter, the selection of the cutter can be realized only by controlling the horizontal sliding of the installation shaft matched with the cutter, and then the workpiece can be machined by using the cutter. When other tools are needed, the mounting shaft is controlled to move reversely and reset, and then the other main shafts carrying the tools are controlled to independently slide and feed, so that the tools can be selected without stopping the machine and the workpieces can be machined without stopping the machine. Therefore, the spindle box for assembling the spindles working independently is arranged, so that independent selection and working of different tools are realized, non-stop selection of the tools and non-stop processing of workpieces are realized, and the processing efficiency of the workpieces is improved. Simultaneously, the front holes of two adjacent rows are arranged in a staggered mode, so that the cutter on each main shaft can independently work in a relatively independent space when working, the workpiece is prevented from touching other cutters, and the working stability of the whole main shaft box is improved.

The present application may be further configured in a preferred example to: the outer wall of one end, close to the sliding shaft, of the mounting shaft is provided with a clamping plate, the clamping plate is located between the front main plate and the rear main plate, a plurality of cylinders are arranged between the front main plate and the rear main plate and used for driving each mounting shaft to horizontally slide independently, and piston rods of the cylinders are fixed with the clamping plate; the front main plate and the rear main plate are horizontally provided with a suspension, the suspension is provided with a pair of motors, shafts of the motors are provided with driving wheels, the outer wall of one end, deviating from the mounting shaft, of the driving shaft is provided with a driving wheel, and the driving wheels are connected with the driving wheels in a linkage mode through belts.

Through adopting above-mentioned technical scheme, when the control installation axle slided, utilize the cylinder of independent work, can drive single installation axle and slide. And through setting up the grip block in the tail end of installation axle to set up the cylinder between preceding mainboard and back mainboard, realize the disguised setting of cylinder, reasonable utilization the idle space in the headstock, improve the compactness and the aesthetic measure of whole headstock. When all sliding shafts and the mandrels are controlled to synchronously rotate, the motor is used for driving the driving wheel to rotate, and meanwhile, the driving wheel and the belt are matched to realize the control of the synchronous rotation of all the sliding shafts and the mandrels, so that the non-stop switching of the cutter and the non-stop processing of the workpiece are realized.

The present application may be further configured in a preferred example to: the outer walls of the two sides of the mounting shaft are both horizontally provided with guide blocks, and the inner walls of the two sides of the shaft sleeve are both horizontally provided with guide grooves for the guide blocks to horizontally slide; the roof of axle sleeve is provided with the main oil groove that sets up along its axial direction, and the upper end outer wall runs through and is provided with the intercommunication the oilhole of main oil groove, the upper end outer wall of installation axle is provided with leads the oil groove, lead the oil groove intercommunication main oil groove with the outer wall of guide block.

Through adopting above-mentioned technical scheme, through the cooperation that sets up guide block and guide way, realize installing the direction and spacing of axle horizontal slip in-process, realize the accurate motion control of installation axle to can the effectual work precision and the machining precision who improves whole main shaft. And when the installation axle slided, in pouring lubricating oil into main oil groove along the oilhole, lubricating oil flowed to the guide block outer wall position along leading the oil groove afterwards, realized the lubrication between guide block and the guide groove and between axle sleeve and the installation axle, guaranteed the smooth slip of installation axle, avoided appearing the card pause phenomenon. Meanwhile, because the main oil groove sets up along the axial direction of axle sleeve, no matter how much the oil groove moves when going to, the oil groove is led all to main oil groove intercommunication, consequently can realize between guide block and the guide way and axle sleeve and the installation axle between the incessant oiling, guarantees the steady lubrication of both during operation promptly, improves the smoothness degree of working process.

The present application may be further configured in a preferred example to: the oil guide grooves comprise a pair of first oil grooves arranged on the outer wall of the mounting shaft, the pair of first oil grooves are arranged along the circumferential direction of the mounting shaft, and two ends of the pair of first oil grooves extend respectively and are aligned with the outer walls of the upper ends of the two ends of the pair of guide blocks; the oil guide groove also comprises a second oil groove arranged on the outer wall of the mounting shaft, the second oil groove is arranged along the circumferential direction of the mounting shaft, the second oil groove is positioned between the pair of first oil grooves, and two ends of the second oil groove respectively extend and align to the outer walls of the upper ends of the middle parts of the pair of guide blocks; lead the oil groove still including set up in install the third oil groove of axle upper end outer wall, the third oil groove is followed the axial direction of installation axle sets up, and aims at main oil groove, the both ends of third oil groove communicate respectively a pair ofly the middle part position of first oil groove, and middle part intercommunication the middle part position of second oil groove.

Through adopting above-mentioned technical scheme, when lubricating oil is arranged outward along main oil groove, fluid gets into in the third oil groove, because the third oil groove is with first oil groove and second oil groove intercommunication, consequently, lubricating oil in the third oil groove can flow to guide block position department along a pair of first oil groove and second oil groove, realize the multithread way fuel feeding, thereby guarantee between guide block and the guide groove and axle sleeve and install quick oiling and high-efficient oiling between the axle, guarantee both steady lubrication of during operation promptly, improve the smoothness degree of working process.

The present application may be further configured in a preferred example to: the feeding system comprises a base which is horizontally connected with the base in a sliding manner along the X-axis direction of the base, a supporting seat which horizontally slides along the Y-axis direction of the base is arranged on the base, a sliding seat which vertically slides along the Z-axis direction of the supporting seat is arranged on the supporting seat, and a clamp used for clamping a workpiece is arranged on the sliding seat; the base includes the first pedestal of level setting and the second pedestal of vertical setting, the lower terminal surface of supporting seat conflicts the up end of first pedestal, and the lateral wall conflicts the lateral wall of second pedestal.

By adopting the technical scheme, when the feeding system is applied to a numerical control machine tool, a workpiece is clamped by utilizing the clamp. When a workpiece is machined, the free sliding of the base, the supporting seat and the sliding seat is utilized to realize the motion control of the workpiece in the X-axis direction, the Y-axis direction and the Z-axis direction, namely the free feeding and machining of the workpiece are realized. And when the feeding system is used, the support seat, the sliding seat and the clamp are supported by the L-shaped base. In the supporting process, the first base body is used for bearing the gravity of the supporting seat, the sliding seat and the clamp, and the second base body is used for bearing the thrust of the cutter on the supporting seat, the sliding seat and the clamp, so that the stable supporting in the horizontal direction and the vertical direction is realized. Therefore, the stability of the supporting seat, the sliding seat and the clamp during working is effectively improved, and the workpiece is accurately positioned, so that the workpiece is accurately machined.

The present application may be further configured in a preferred example to: the clamp comprises a supporting plate which is vertically arranged, the upper end of the supporting plate is horizontally provided with an upper mounting plate, and the lower end of the supporting plate is horizontally provided with a lower mounting plate; the upper end surface of the lower mounting plate is provided with a lower clamping seat, the side wall of the supporting plate is vertically and slidably connected with an upper clamping seat positioned right above the lower clamping seat, and the upper mounting plate is provided with an oil cylinder for driving the upper clamping seat to slide along the vertical direction; the lower clamping seat comprises a motor, a rotary table is arranged on a machine shaft of the motor, a lower clamping block is arranged on the upper end face of the rotary table, the upper clamping seat comprises a vertical sliding connection seat connected with a positioning seat of the side wall of the supporting plate, a rotary shaft is vertically rotatably connected onto the positioning seat, the lower end of the rotary shaft is provided with an upper clamping block located right above the lower clamping block, and a brake disc is arranged on the outer wall of the upper clamping block.

By adopting the technical scheme, when the workpiece is clamped and fixed, the oil cylinder is utilized to control the upper clamping seat to move upwards, then the upper clamping seat is controlled to move downwards, and the workpiece can be clamped and fixed by utilizing the matching of the upper clamping seat and the lower clamping seat. When clamping the workpiece, the workpiece is clamped by the upper clamping block and the lower clamping block. Meanwhile, the lower clamping seat and the upper clamping seat can rotate freely, and meanwhile, the adjustment and the fixation of any angle of the workpiece can be realized through the matching of the brake disc, so that the continuous processing and the non-disassembly processing of all surfaces of the workpiece can be realized, and the processing efficiency is improved.

The present application may be further configured in a preferred example to: the positioning seat comprises a first positioning block arranged on the side wall of the supporting plate, a second positioning block is vertically and slidably connected to one side of the first positioning block, which deviates from the supporting plate, the first positioning block is fixed on the supporting plate through a bolt, the rotating shaft is rotatably connected to the second positioning block, and a piston rod of the oil cylinder is fixed to the upper end face of the second positioning block.

Through adopting above-mentioned technical scheme, because the vertical sliding connection of second locating piece is in first locating piece, and can only slide to the lower extreme from the upper end of first locating piece, consequently the high position of first locating piece will decide the working height position of second locating piece, thereby it is spacing to realize going up the least significant end operating position and the highest significant end operating position of clamp splice, thereby realize going up the regulation of distance between clamp splice and the lower clamp splice, in order to be used for the not work piece of adaptation equidimension, the effect of high suitability has been reached.

The present application may be further configured in a preferred example to: the lower clamping block comprises a first fixing block, a first clamping block is arranged on the upper end face of the first fixing block, a first dovetail strip for the first dovetail strip to slide is arranged on the lower end face of the first clamping block in a penetrating mode, the first fixing block comprises a pair of first block bodies, and the first block bodies are fixedly connected through bolts; go up the clamp splice and include the second fixed block, the lower terminal surface of second fixed block is provided with the second clamp splice, the up end of second clamp splice is provided with the second dovetail, the lower terminal surface of second fixed block runs through and is provided with the confession the second dovetail that the second dovetail slided, the second fixed block includes a pair of second block, and is a pair of pass through bolt fixed connection between the second block.

Through adopting above-mentioned technical scheme, when carrying out the centre gripping fixed to the work piece, utilize the cooperation of first grip block and second grip block, realize the centre gripping of work piece and fix. Because first grip block and second grip block are fixed through first dovetail strip and second dovetail strip and first fixed block and second fixed block looks joint respectively, consequently first grip block and second grip block can freely slide to realize the fixed of each position, consequently can realize the regulation of first grip block and second grip block position, fixed with the accurate centre gripping that is used for realizing the work piece, improve the machining precision of work piece. Meanwhile, the first clamping block and the second clamping block can be freely disassembled and assembled, and the disassembling and assembling process is easy and convenient, so that the first clamping block and the second clamping block of different specifications and shapes can be quickly replaced, and workpieces of different specifications and shapes can be clamped and fixed.

The present application may be further configured in a preferred example to: clamping strips are horizontally arranged on the lower end face of the upper mounting plate and the upper end face of the lower mounting plate, first openings for the clamping strips to be embedded into are horizontally arranged on the side wall of the upper end and the side wall of the lower end of the support plate, which are away from the sliding seat, respectively, and the upper mounting plate, the lower mounting plate and the pair of clamping strips are fixed on the support plate through bolts; one side of the support plate, which is close to the sliding seat, is provided with a second opening for the sliding seat to be embedded in, and the lower end of the second opening penetrates through the lower end face of the support plate.

Through adopting above-mentioned technical scheme, when carrying out the centre gripping fixed to the work piece, the flexible ascending reaction force will be applyed to the upper mounting panel to the expansion of hydro-cylinder, applys decurrent effort to the lower mounting panel simultaneously, consequently goes up the trend that mounting panel and lower mounting panel will produce keeping away from each other. Through the cooperation of card strip and first opening this moment, it is corresponding to make to produce the lever between last mounting panel and the lower mounting panel to go up the mounting panel and all support the backup pad with lower mounting panel, consequently can eliminate the trend that goes up the mounting panel and produce each other keeping away from with lower mounting panel, thereby increase backup pad and last mounting panel and the lower between the mounting panel stability of being connected and structural strength, realize the high accuracy centre gripping of work piece simultaneously, increased the machining precision of work piece. Simultaneously through setting up the second opening, make and form the joint cooperation between backup pad and the sliding seat to increased conflict point and atress position, increased stability and structural strength between whole anchor clamps and the sliding seat, thereby avoided whole anchor clamps to appear rocking the phenomenon, realized the high accuracy processing of work piece.

In summary, the present application has the following beneficial effects:

1. the spindle box for assembling the spindles working independently is arranged, so that independent selection and working of different tools are realized, non-stop selection of the tools and non-stop processing of workpieces are realized, and the processing efficiency of the workpieces is improved;

2. through the matching of the main oil groove and the oil guide groove, lubrication between the guide block and the guide groove and between the shaft sleeve and the installation shaft is realized, smooth sliding of the installation shaft is ensured, the phenomenon of blocking is avoided, meanwhile, multi-runner simultaneous oil supply is realized through the oil guide groove with multiple runners, rapid oil injection and efficient oil injection between the guide block and the guide groove and between the shaft sleeve and the installation shaft are ensured, and the smoothness during working is improved;

3. the supporting seat, the sliding seat and the clamp are supported by the high-stability base, and stable support in the horizontal and vertical directions is realized, so that the stability of the supporting seat, the sliding seat and the clamp during working is effectively improved, and the workpiece is accurately positioned, thereby realizing accurate processing of the workpiece;

4. the fixture which is simple in structure and can rotate freely is arranged, so that the workpiece can be adjusted and fixed at any angle, namely, the continuous processing and non-disassembly processing of each surface of the workpiece are realized, and the processing efficiency is improved;

5. through last mounting panel and the lower mounting panel that produces lever effect, eliminate and go up the mounting panel and produce the trend of keeping away from each other with lower mounting panel, increase backup pad and last mounting panel and the structural strength between the mounting panel down, realize the high accuracy centre gripping of work piece simultaneously, increased the machining precision of work piece.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

FIG. 2 is a schematic structural view of a main shaft of the embodiment;

FIG. 3 is a schematic structural view of a guide block and a guide groove of the embodiment;

FIG. 4 is a schematic view of the internal structure of the main shaft of the embodiment;

FIG. 5 is a schematic structural view of an oil guide groove of the embodiment;

FIG. 6 is a schematic structural view of a spindle head of the embodiment;

FIG. 7 is a schematic structural diagram of a front main board and a rear main board of an embodiment;

FIG. 8 is a schematic structural diagram of a driving wheel and a driving wheel according to an embodiment;

FIG. 9 is a schematic structural view of a clamping plate of an embodiment;

FIG. 10 is a schematic structural view of a feeding system of an embodiment;

FIG. 11 is a schematic structural diagram of a housing of the embodiment;

FIG. 12 is a schematic view of the support and slide of the embodiment;

FIG. 13 is a schematic structural view of a base of the embodiment;

FIG. 14 is a schematic structural view of a clip of an embodiment;

FIG. 15 is a schematic structural view of a lower cartridge of the embodiment;

FIG. 16 is a schematic structural view of an upper cartridge of the embodiment;

FIG. 17 is a schematic structural view of a lower clamp block of the embodiment;

FIG. 18 is a schematic structural view of an upper clamp block of the embodiment.

Reference numerals: 1. a shaft sleeve; 11. a guide groove; 12. a main oil sump; 13. an oil hole; 14. a first retainer ring; 2. installing a shaft; 21. a guide block; 22. a mandrel; 23. sealing the bearing; 24. an end cap; 25. a tool apron; 26. a sliding shaft; 27. a spline; 3. a drive shaft; 31. a keyway; 32. a drive wheel; 4. an oil guide groove; 41. a first oil groove; 42. a second oil groove; 43. a third oil groove; 5. a base; 51. connecting ribs; 52. a suspension; 53. a motor; 54. a driving wheel; 6. a front main board; 61. a front mounting hole group; 62. a front hole; 7. a rear main board; 71. a rear mounting hole group; 72. a rear hole; 73. positioning the bearing; 74. a fixed seat; 75. a second retainer ring; 8. a clamping plate; 81. a corner ear; 01. a machine base; 011. collecting tank; 012. a slag discharge port; 013. a first lead screw assembly; 02. a base; 021. a second lead screw assembly; 022. a first seat body; 023. a second seat body; 024. a first slide rail; 025. a second slide rail; 03. a supporting seat; 031. a third lead screw assembly; 032. a first chute; 033. a second chute; 04. a sliding seat; 05. a clamp; 051. a support plate; 052. an upper mounting plate; 053. a lower mounting plate; 054. clamping the strip; 055. a first gap; 056. a second gap; 06. a lower clamping seat; 061. an electric motor; 062. a turntable; 063. a lower clamping block; 064. a first fixed block; 065. a first clamping block; 066. a first dovetail bar; 067. a first dovetail groove; 068. a first block; 07. an upper clamping seat; 071. positioning seats; 0711. a first positioning block; 0712. a second positioning block; 072. a rotating shaft; 073. an upper clamping block; 074. a brake disc; 075. a second fixed block; 076. a second clamping block; 077. a second dovetail bar; 078. a second dovetail groove; 079. a second block; 08. a clamping strip; 09. a clamping groove.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

As shown in fig. 1, a numerical control machine tool includes a base 01, and a feeding system and a spindle box are respectively disposed at two ends of the base 01. The spindle box is horizontally and independently and rotatably connected with a plurality of spindles for fixing tools, and the spindles are horizontally and slidably connected with the spindle box.

When the numerical control machine tool is used for processing a workpiece, the workpiece is clamped and fixed by the feeding system, different cutters are fixed on different main shafts, and all the main shafts are controlled to rotate synchronously. When a workpiece is machined, the independent spindle is controlled to drive the cutter to extend out, and then the feeding system is used for controlling the workpiece to be close to the cutter, so that the workpiece is machined. And then, the feeding system is used for controlling the workpiece to move reversely, controlling the working spindle and the cutter to retreat, controlling the exceptional spindle and the cutter to stretch out, controlling the workpiece to be close to the cutter again by using the feeding system, and sequentially reciprocating to realize the machining of the workpiece.

As shown in fig. 2 and 3, the spindle includes a horizontally disposed shaft sleeve 1, and an installation shaft 2 is horizontally and smoothly connected in the shaft sleeve 1. The equal level of both sides outer wall of installation axle 2 is provided with guide block 21, the equal level of both sides inner wall of axle sleeve 1 is provided with the confession guide way 11 that guide block 21 level slided.

As shown in fig. 3 and 4, a spindle 22 is horizontally rotatably connected to the mounting shaft 2, and a seal bearing 23 and an end cap 24 covering the seal bearing 23 are provided between the spindle 22 and both ends of the mounting shaft 2.

As shown in fig. 3 and 4, a tool seat 25 for fixing a tool is provided at one end of the spindle 22 located outside the mounting shaft 2, and a sliding shaft 26 extends from the other end located outside the mounting shaft 2.

As shown in fig. 3 and 4, the outer wall of the sliding shaft 26 is provided with a driving shaft 3, and the sliding shaft 26 is horizontally slidably connected to the driving shaft 3. The outer wall of the sliding shaft 26 is provided with splines 27, and the inner wall of the driving shaft 3 is provided with key grooves 31 for the sliding of the splines 27.

When the spindle is applied to a numerical control machine tool, the spindle sleeve 1 is fixed, and the driving shaft 3 is supported and fixed, so that the fixed-axis rotation of the driving shaft 3 is realized. When a workpiece is machined, the driving shaft 3 is controlled to rotate in a fixed shaft mode, and under the matching of the spline 27 and the key groove 31, the sliding shaft 26 and the mandrel 22 are controlled to rotate synchronously, so that the tool apron 25 and the tool are controlled to rotate.

When the feed of the cutter is adjusted, the mounting shaft 2 is controlled to horizontally slide, and the core shaft 22 and the sliding shaft 26 are controlled to horizontally slide synchronously under the cooperation of the end cover 24. Meanwhile, under the matching action of the guide block 21 and the guide groove 11, the limiting of the mounting shaft 2 and the accurate sliding in the horizontal direction are realized.

In addition, in the process of sliding the mounting shaft 2 and the slide shaft 26, the slide shaft 26 does not separate from the drive shaft 3, and therefore, the rotation and sliding of the slide shaft 26 are synchronized, that is, the feeding control of the tool holder 25 and the tool in rotation is realized, while the rotation state is maintained all the time.

As shown in fig. 4 and 5, a main oil groove 12 is formed in a top wall of the sleeve 1 along an axial direction thereof, and an oil hole 13 communicating with the main oil groove 12 is vertically formed in an upper end outer wall thereof.

As shown in fig. 4 and 5, an oil guide groove 4 is formed in an outer wall of an upper end of the mounting shaft 2, and the oil guide groove 4 communicates the main oil groove 12 with an outer wall of the guide block 21.

When installation axle 2 slided, pour into main oil groove 12 with lubricating oil along oilhole 13 in, lubricating oil flows to guide block 21 outer wall position along leading oil groove 4 afterwards, realizes the lubrication between guide block 21 and the guide way 11 and between axle sleeve 1 and the installation axle 2, guarantees installing smooth gliding of axle 2, avoids appearing the card ton phenomenon.

Meanwhile, because main oil groove 12 sets up along the axial direction of axle sleeve 1, therefore no matter when leading oil groove 4 and moving to where, main oil groove 12 all communicates and leads oil groove 4, consequently can realize between guide block 21 and the guide way 11 and between axle sleeve 1 and the installation axle 2 not stopping oiling, guarantee the stable lubrication of both during operation promptly.

As shown in fig. 5, the oil guide groove 4 includes a pair of first oil grooves 41 disposed on the outer wall of the mounting shaft 2, the pair of first oil grooves 41 are disposed along the circumferential direction of the mounting shaft 2, and both ends of the pair of first oil grooves 41 extend and align with the outer walls of both ends upper ends of the pair of guide blocks 21, respectively.

As shown in fig. 5, the oil guide groove 4 further includes a second oil groove 42 disposed on an outer wall of the mounting shaft 2, and the second oil groove 42 is disposed along a circumferential direction of the mounting shaft 2. The second oil groove 42 is located between the pair of first oil grooves 41, and both ends of the second oil groove 42 extend and align with the outer walls of the upper ends of the middle portions of the pair of guide blocks 21, respectively.

As shown in fig. 4 and 5, the oil guide groove 4 further includes a third oil groove 43 disposed on an outer wall of an upper end of the mounting shaft 2, and the third oil groove 43 is disposed along an axial direction of the mounting shaft 2 and aligned with the main oil groove 12. The two ends of the third oil groove 43 are respectively communicated with the middle positions of the first oil grooves 41, and the middle parts of the third oil grooves are communicated with the middle position of the second oil groove 42.

When lubricating oil was arranged outward along main oil groove 12, fluid got into in the third oil groove 43, because third oil groove 43 communicates first oil groove 41 and second oil groove 42, consequently lubricating oil in the third oil groove 43 can flow to guide block 21 position department along a pair of first oil groove 41 and second oil groove 42, realized the multithread way fuel feeding to guarantee the high-efficient oiling between guide block 21 and the guide way 11 and between axle sleeve 1 and the installation axle 2, guarantee the stable lubrication of both during operation promptly.

As shown in fig. 6, the spindle box includes a main base, a front main plate 6 and a rear main plate 7 are vertically arranged on the main base side by side, and connecting ribs 51 are arranged around the front main plate 6 and the rear main plate 7.

As shown in fig. 6 and 7, a plurality of rows of front mounting hole sets 61 are arranged on the front main plate 6, and each row of the front mounting hole sets 61 includes a plurality of front holes 62 arranged at intervals. A plurality of front holes 62 in two adjacent rows of the front mounting hole groups 61 are arranged in a staggered manner, each front hole 62 is used for embedding and fixing the shaft sleeve 1, and the shaft sleeve 1 is provided with a first baffle ring 14 fixed on the outer wall of the front main plate 6.

As shown in fig. 6 and 7, a plurality of rows of rear mounting hole groups 71 aligned with the front mounting hole group 61 are formed through the rear main plate 7, each row of the rear mounting hole groups 71 includes a plurality of rear holes 72 arranged at intervals, and each rear hole 72 is used for the driving shaft 3 to be inserted.

As shown in fig. 6 and 7, a positioning bearing 73 and a fixing seat 74 covering the positioning bearing 73 are further embedded and fixed in the rear hole 72, the driving shaft 3 is rotatably connected to the fixing seat 74, and a second retaining ring 75 fixed to the outer wall of the rear main plate 7 is arranged on the fixing seat 74.

When the spindle box is applied to a numerically controlled lathe, a plurality of spindles are fixed to the spindle box, and different tools are fixed to tool rests 25 of different spindles. When the main shaft is fixed, the sleeve 1 is inserted into the front hole 62, and the first retainer ring 14 is fixed to the outer wall of the front main plate 6 by screws. Then, the positioning bearing 73 and the fixing seat 74 are embedded into the rear hole 72, the second retaining ring 75 is fixed to the outer wall of the rear main plate 7 by screws, and the driving seat is inserted through the positioning seat 071 to fix the main shaft.

When machining a workpiece, the drive shafts 3 in all the spindles are controlled to rotate synchronously, and at this time, the synchronous rotation control of all the slide shafts 26 and the spindle 22, that is, the synchronous rotation control of all the tool holders 25 and the tools is realized.

When a workpiece needs to be machined by using a specific cutter, the selection of the cutter can be realized only by controlling the horizontal sliding of the installation shaft 2 matched with the cutter, and then the workpiece can be machined by using the cutter.

When other tools are needed, the mounting shaft 2 is controlled to move reversely and reset, and then the other main shafts carrying the tools are controlled to independently slide and feed, so that the tools can be selected without stopping the machine and the workpieces can be machined without stopping the machine.

As shown in fig. 6 and 8, a suspension 52 is horizontally disposed between the upper ends of the front main plate 6 and the rear main plate 7, and a pair of motors 53 is disposed on the suspension 52. The shafts of the motors 53 are provided with driving wheels 54, the outer wall of one end of the driving shaft 3, which is away from the mounting shaft 2, is provided with driving wheels 32, and the driving wheels 54 are in linkage connection with the driving wheels 32 through a plurality of belts.

When all the sliding shafts 26 and the mandrels 22 are controlled to synchronously rotate, the motor 53 is started, then the motor 53 drives the driving wheel 54 to rotate, and meanwhile, the control of the synchronous rotation of all the sliding shafts 26 and the mandrels 22 is realized by the matching of the driving wheel 32 and the belt, so that the non-stop switching of the tool and the non-stop processing of the workpiece are realized.

As shown in fig. 8 and 9, a clamping plate 8 is disposed on an outer wall of one end of each of the mounting shafts 2 close to the sliding shaft 26, the clamping plate 8 is disposed in an open shape, a pair of corner lugs 81 is disposed at an opening position of the clamping plate 8, and a locking bolt is disposed on the pair of corner lugs 81. The clamping plate 8 is located between the front main plate 6 and the rear main plate 7, and one side of the clamping plate 8 extends to form a cam shape.

As shown in fig. 8 and 9, a plurality of air cylinders are arranged between the front main plate 6 and the rear main plate 7 at intervals, the air cylinders are used for driving each mounting shaft 2 to horizontally slide, and piston rods of the air cylinders are fixed with the protruding positions of the clamping plates 8.

When the control installation axle 2 slides, utilize the cylinder of independent work, can drive single installation axle 2 and slide. And through setting up grip block 8 in the tail end of installation axle 2 to set up the cylinder between preceding mainboard 6 and back mainboard 7, realize the disguised setting of cylinder, reasonable utilization the idle space in the headstock.

Because grip block 8 is the opening form setting, consequently through the cooperation that utilizes locking bolt and angle ear 81, can realize grip block 8's locking fixed, also can realize grip block 8's quick assembly disassembly simultaneously. Therefore, the assembly and disassembly maintenance of the holding plate 8 can be effectively realized.

As shown in fig. 10 and 11, a flared collecting tank 011 is provided on the machine base 01, and slag outlets 012 communicating with the collecting tank 011 are provided on both sides.

As shown in fig. 10 and 11, the feeding system includes a base 025 horizontally slidably connected along the X-axis direction of the base 01, and a first lead screw assembly 013 for driving the base 025 to horizontally slide is disposed on the base 01.

As shown in fig. 10 and 12, the base 025 is provided with a support seat 03 horizontally sliding along the Y-axis direction thereof, and the base 025 is provided with a second lead screw assembly 021 for driving the support seat 03 to horizontally slide.

As shown in fig. 10 and 12, the supporting seat 03 is provided with a sliding seat 04 which vertically slides along the Z-axis direction, the sliding seat 04 is provided with a clamp 05 for clamping a workpiece, and the supporting seat 03 is provided with a third screw rod assembly 031 for driving the sliding seat 04 to vertically slide.

When the feeding system is applied to a numerical control machine tool, a workpiece is clamped by the clamp 05. When a workpiece is machined, the first screw rod assembly 013, the second screw rod assembly 021 and the third screw rod assembly 031 are used for respectively controlling the base 025, the supporting seat 03 and the sliding seat 04 to freely slide, so that the motion control of the workpiece in the directions of an X axis, a Y axis and a Z axis is realized, and the free feeding and machining of the workpiece are realized.

And when adding man-hour to the work piece, through setting up the collecting vat 011 of flaring and realizing the automatic collection and the directional collection of iron fillings, realize the automatic discharge of iron fillings through setting up slag discharge hole 012 simultaneously, realize the automatic collection and clear away fast of iron fillings promptly.

As shown in fig. 12 and 13, the base 025 includes a first base 022 and a second base 023, and the first base 022 and the second base 023 are both hollow. First pedestal 022 and second pedestal 023 are the setting of L shape, the lower terminal surface of supporting seat 03 is contradicted the up end of first pedestal 022, and the lateral wall is contradicted the lateral wall of second pedestal 023.

As shown in fig. 12 and 13, a first slide rail 024 is horizontally disposed on an upper end surface of the first seat 022, and a first sliding groove 032 into which the first slide rail 024 is inserted is disposed on a lower end surface of the support base 03. The upper end lateral wall level of second pedestal 023 is provided with second slide rail 025, the lateral wall of supporting seat 03 is provided with the confession the second spout 033 of second slide rail 025 embedding.

When the feeding system is assembled, the support base 03, the sliding base 04 and the clamp 05 are supported by the L-shaped base 025. And in the supporting process, the gravity of the supporting seat 03, the sliding seat 04 and the clamp 05 is borne by the first seat body 022, and the thrust of the cutter on the supporting seat 03, the sliding seat 04 and the clamp 05 is borne by the second seat body 023, so that the stable supporting in the horizontal and vertical directions is realized.

As shown in fig. 14, the clamp 05 includes a vertically arranged support plate 051, an upper mounting plate 052 is horizontally extended in a direction away from the support plate 051 at the upper end of the support plate 051, and a lower mounting plate 053 is horizontally extended in a direction away from the support plate 051 at the lower end.

As shown in fig. 14, the upper end surface of the lower mounting plate 053 is provided with a lower clamp holder 06, the side wall of the supporting plate 051 is vertically and slidably connected with an upper clamp holder 07 positioned right above the lower clamp holder 06, and an oil cylinder (not shown in the figure) for driving the upper clamp holder 07 to slide in the vertical direction is arranged on the upper mounting plate 052.

When the workpiece is clamped and fixed, the oil cylinder is used for controlling the upper clamping seat 07 to move upwards, and then the workpiece is placed between the upper clamping seat 07 and the lower clamping seat 06. And then the upper clamping seat 07 is controlled to move downwards, so that the workpiece can be clamped and fixed by utilizing the matching of the upper clamping seat 07 and the lower clamping seat 06.

As shown in fig. 14, the lower end face of the end of the upper mounting plate 052 close to the support plate 051 and the upper end face of the end of the lower mounting plate 053 close to the support plate 051 are horizontally provided with a clamping strip 054.

As shown in fig. 14, the upper end side wall and the lower end side wall of the supporting plate 051 departing from the side of the sliding seat 04 are horizontally provided with first notches 055 for the clamping strips 054 to be embedded into, and the upper mounting plate 052, the lower mounting plate 053 and the pair of clamping strips 054 are fixed on the mounting plate through bolts.

As shown in fig. 12 and 14, a second notch 056 for the sliding seat 04 to be inserted into is disposed in a middle position of one side of the support plate 051 close to the sliding seat 04, and a lower end of the second notch 056 penetrates through a lower end surface of the support plate 051.

When the workpiece is clamped and fixed, the telescopic cylinder applies upward reaction force to the upper mounting plate 052 and applies downward action force to the lower mounting plate 053, so that the upper mounting plate 052 and the lower mounting plate 053 tend to be away from each other, namely, one end departing from the supporting plate 051 tends to tilt.

At the moment, through the matching of the clamping strip 054 and the first opening 055, the lever generated between the upper mounting plate 052 and the lower mounting plate 053 is corresponding, and the upper mounting plate 052 and the lower mounting plate 053 are tightly abutted against the supporting plate 051, so that the trend that the upper mounting plate 052 and the lower mounting plate 053 are far away from each other can be eliminated, and the tilting phenomenon of the upper mounting plate 052 and the lower mounting plate 053 is avoided.

Meanwhile, the supporting plate 051 is in clamping fit with the sliding seat 04 by arranging the second notch 056, so that contact points and stress positions are increased. To sum up, can effectual increase backup pad 051 and last mounting panel 052 and down mounting panel 053 between stability and structural strength improve simultaneously between whole anchor clamps 05 and the sliding seat 04, realize the high accuracy processing of work piece.

As shown in fig. 15, the lower chuck 06 includes a motor 061 provided on the lower mounting plate 053, a crankshaft of the motor 061 faces upward and is provided with a rotating plate 062, and an upper end surface of the rotating plate 062 is provided with a lower chuck 063.

As shown in fig. 15 and 16, the upper clamping base 07 includes a positioning seat 071 vertically slidably connected to the side wall of the supporting plate 051, the positioning seat 071 is vertically and rotatably connected to a rotating shaft 072, an upper clamping block 073 located right above the lower clamping block 063 is arranged at the lower end of the rotating shaft 072, and a brake disc 074 is arranged on the outer wall of the upper clamping base 072.

When clamping a workpiece, the workpiece is clamped by the upper clamp block 073 and the lower clamp block 063. Meanwhile, since the lower holder 06 and the upper holder 07 can freely rotate, the lower holder 06 and the upper holder 07 can be controlled to freely rotate by the motor 061.

After the workpiece rotates for a certain angle, the adjustment and fixation of any angle of the workpiece can be realized through the matching of the brake disc 074, so that the continuous processing and the non-disassembly processing of each surface position of the workpiece can be realized, and the processing efficiency of the workpiece is effectively improved.

As shown in fig. 17, the lower clamp block 063 includes a first fixed block 064, the upper end surface of the first fixed block 064 is provided with a first clamp block 065, the lower end surface of the first clamp block 065 is provided with a first dovetail strip 066, and the upper end surface of the first fixed block 064 is provided with a first dovetail groove 067 for the first dovetail strip 066 to slide.

As shown in fig. 17, the first fixing block 064 includes a pair of first blocks 068, the first blocks 068 are fixedly connected to each other by bolts, and a clamping strip 08 and a clamping groove 09 that are inserted into each other and fit with each other are respectively disposed on sides of the first blocks 068 that are close to each other.

As shown in fig. 18, the upper clamping block 073 includes a second fixing block 075, a second clamping block 076 is disposed on a lower end surface of the second fixing block 075, a second dovetail strip 077 is disposed on an upper end surface of the second clamping block 076, and a second dovetail groove 078 for the second dovetail strip 077 to slide is disposed on the lower end surface of the second fixing block 075 in a penetrating manner.

As shown in fig. 18, the second fixing block 075 includes a pair of second block bodies 079, the pair of second block bodies 079 are fixedly connected by bolts, and a clamping strip 08 and a clamping groove 09 that are engaged with each other in an inserting manner are respectively disposed on one side of the pair of second block bodies 079 that is close to each other.

When the workpiece is clamped and fixed, the workpiece is clamped and fixed by the cooperation of the first clamping block 065 and the second clamping block 076. Because the first clamping block 065 and the second clamping block 076 are respectively clamped and fixed with the first fixing block 064 and the second fixing block 075 through the first dovetail strip 066 and the second dovetail strip 077, the first clamping block 065 and the second clamping block 076 can freely slide, and the fixation of all positions is realized.

Therefore, when the workpiece is clamped and fixed, the working positions of the first clamping block 065 and the second clamping block 076 can be adjusted and quickly adjusted, so that the workpiece can be accurately clamped and fixed, and the machining precision of the workpiece is improved.

Meanwhile, the first clamping block 065 and the second clamping block 076 can be freely disassembled and assembled, and the disassembling and assembling process is easy and convenient, so that the first clamping block 065 and the second clamping block 076 with different specifications and shapes can be quickly replaced, and workpieces with different specifications and shapes can be clamped and fixed.

As shown in fig. 14 and 16, the positioning seat 071 comprises a first positioning block 0711 arranged on the side wall of the supporting plate 051, and a second positioning block 0712 is vertically and slidably connected to one side of the first positioning block 0711 departing from the supporting plate 051.

As shown in fig. 14 and 16, the first positioning block 0711 is fixed to the support plate 051 by bolts, the rotating shaft 072 is rotatably connected to the second positioning block 0712, and a piston rod of the oil cylinder is fixed to the upper end surface of the second positioning block 0712.

Since the second positioning block 0712 is vertically slidably connected to the first positioning block 0711 and can only slide from the upper end to the lower end of the first positioning block 0711, the height position of the first positioning block 0711 will determine the working height position of the second positioning block 0712.

Therefore, when the height position of the first positioning block 0711 changes, the lowest end working position and the highest end working position of the upper clamping block 073 are limited, so that the distance between the upper clamping block 073 and the lower clamping block 063 is adjusted to adapt to workpieces of different sizes.

The working principle is as follows: when the numerical control machine tool is used for processing a workpiece, the workpiece is clamped and fixed by the feeding system, different cutters are fixed on different main shafts, and all the main shafts are controlled to rotate synchronously. When a workpiece is machined, the independent spindle is controlled to drive the cutter to extend out, and then the feeding system is used for controlling the workpiece to be close to the cutter, so that the workpiece is machined. And then, the feeding system is used for controlling the workpiece to move reversely, controlling the working spindle and the cutter to retreat, controlling the exceptional spindle and the cutter to stretch out, controlling the workpiece to be close to the cutter again by using the feeding system, and sequentially reciprocating to realize the machining of the workpiece.

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. The utility model provides a numerical control machine tool, includes frame (01), the both ends of frame (01) are provided with feed system and headstock, its characterized in that respectively: the spindle box is horizontally and independently and rotatably connected with a plurality of spindles for fixing tools, and the spindles are horizontally and slidably connected with the spindle box.

2. The numerical control machine tool according to claim 1, characterized in that: the spindle comprises a spindle sleeve (1), a mounting shaft (2) is horizontally and smoothly connected in the spindle sleeve (1), a mandrel (22) is horizontally and rotatably connected in the mounting shaft (2), and end covers (24) are arranged between the mandrel (22) and two ends of the mounting shaft (2);

a cutter holder (25) for fixing a cutter is arranged at one end, located outside the mounting shaft (2), of the mandrel (22), and a sliding shaft (26) is arranged at the other end, located outside the mounting shaft (2), in an extending manner;

a driving shaft (3) is arranged on the outer wall of the sliding shaft (26), the sliding shaft (26) is horizontally and slidably connected to the driving shaft (3), a spline (27) is arranged on the outer wall of the sliding shaft (26), and a key groove (31) for the spline (27) to slide is arranged on the inner wall of the driving shaft (3);

the spindle box comprises a main seat, a front main plate (6) and a rear main plate (7) are vertically arranged on the main seat side by side, a plurality of rows of front mounting hole groups (61) penetrate through the front main plate (6), each row of front mounting hole groups (61) comprises a plurality of front holes (62) arranged at intervals, and each front hole (62) is used for embedding and fixing the shaft sleeve (1);

a plurality of rows of rear mounting hole groups (71) aligned with the front mounting hole group (61) penetrate through the rear main plate (7), each row of rear mounting hole groups (71) comprises a plurality of rear holes (72) arranged at intervals, and each rear hole (72) is used for being embedded into the driving shaft (3);

two adjacent rows a plurality of on preceding mounting hole group (61) preceding hole (62) are the dislocation form and set up, still inlay in back hole (72) and be fixed with fixing base (74), and drive shaft (3) rotate connect in fixing base (74).

3. A numerically controlled machine tool according to claim 2, wherein: a clamping plate (8) is arranged on the outer wall of one end, close to the sliding shaft (26), of the mounting shaft (2), the clamping plate (8) is located between the front main plate (6) and the rear main plate (7), a plurality of cylinders are arranged between the front main plate (6) and the rear main plate (7) and used for independently driving each mounting shaft (2) to horizontally slide, and piston rods of the cylinders are fixed to the clamping plate (8);

preceding mainboard (6) with level is provided with suspension (52) between the upper end of back mainboard (7), be provided with a pair of motor (53) on suspension (52), it is a pair of all be provided with action wheel (54) on the spindle of motor (53), drive shaft (3) deviate from the one end outer wall of installation axle (2) is provided with drive wheel (32), action wheel (54) with connect through the belt linkage between drive wheel (32).

4. A numerically controlled machine tool according to claim 2, wherein: the outer walls of two sides of the mounting shaft (2) are both horizontally provided with guide blocks (21), and the inner walls of two sides of the shaft sleeve (1) are both horizontally provided with guide grooves (11) for the guide blocks (21) to horizontally slide;

the roof of axle sleeve (1) is provided with main oil groove (12) that set up along its axial direction, and the upper end outer wall runs through and is provided with the intercommunication oilhole (13) of main oil groove (12), the upper end outer wall of installation axle (2) is provided with leads oil groove (4), lead oil groove (4) intercommunication main oil groove (12) with the outer wall of guide block (21).

5. The numerical control machine tool according to claim 4, characterized in that: the oil guide grooves (4) comprise a pair of first oil grooves (41) arranged on the outer wall of the mounting shaft (2), the pair of first oil grooves (41) are arranged along the circumferential direction of the mounting shaft (2), and two ends of the pair of first oil grooves (41) extend respectively and are aligned with the outer walls of the upper ends of the two ends of the pair of guide blocks (21);

the oil guide groove (4) further comprises a second oil groove (42) arranged on the outer wall of the mounting shaft (2), the second oil groove (42) is arranged along the circumferential direction of the mounting shaft (2), the second oil groove (42) is located between the pair of first oil grooves (41), and two ends of the second oil groove (42) respectively extend and align to the outer wall of the upper end of the middle part of the pair of guide blocks (21);

lead oil groove (4) still including set up in third oil groove (43) of installation axle (2) upper end outer wall, third oil groove (43) are followed the axial direction of installation axle (2) sets up, and aims at main oil groove (12), the both ends of third oil groove (43) communicate respectively a pair ofly the middle part position of first oil groove (41), and the middle part intercommunication the middle part position of second oil groove (42).

6. The numerical control machine tool according to claim 1, characterized in that: the feeding system comprises bases (02) (5) which are horizontally connected in a sliding mode along the X-axis direction of the base (01), a supporting seat (03) which horizontally slides along the Y-axis direction of the base (02) (5) is arranged on the base (02) (5), a sliding seat (04) which vertically slides along the Z-axis direction of the supporting seat (03) is arranged on the supporting seat (03), and a clamp (05) used for clamping a workpiece is arranged on the sliding seat (04);

base (02) (5) include first pedestal (022) that the level set up and second pedestal (023) of vertical setting, the lower terminal surface of supporting seat (03) is contradicted the up end of first pedestal (022), and the lateral wall is contradicted the lateral wall of second pedestal (023).

7. The numerical control machine tool according to claim 6, characterized in that: the clamp (05) comprises a supporting plate (051) which is vertically arranged, an upper mounting plate (052) is horizontally arranged at the upper end of the supporting plate (051), and a lower mounting plate (053) is horizontally arranged at the lower end of the supporting plate (051);

the upper end face of the lower mounting plate (053) is provided with a lower clamping seat (06), the side wall of the supporting plate (051) is vertically and slidably connected with an upper clamping seat (07) positioned right above the lower clamping seat (06), and the upper mounting plate (052) is provided with an oil cylinder for driving the upper clamping seat (07) to slide along the vertical direction;

lower holder (06) include motor (061), be provided with carousel (062) on the spindle of motor (061), the up end of carousel (062) is provided with down clamp splice (063), go up clamp splice (07) including vertical sliding connection in positioning seat (071) of backup pad (051) lateral wall, vertical rotation is connected with pivot (072) on positioning seat (071), the lower extreme of pivot (072) is provided with and is located clamp splice (073) directly over lower clamp splice (063), and the outer wall is provided with brake disc (074).

8. The numerical control machine tool according to claim 7, characterized in that: positioning seat (071) including set up in first locating piece (0711) of backup pad (051) lateral wall, first locating piece (0711) deviate from the vertical sliding connection in one side of backup pad (051) has second locating piece (0712), first locating piece (0711) is through the bolt fastening in backup pad (051), pivot (072) rotate connect in second locating piece (0712), and the piston rod of hydro-cylinder with the up end of second locating piece (0712) is fixed mutually.

9. The numerical control machine tool according to claim 7, characterized in that: the lower clamping block (063) comprises a first fixing block (064), a first clamping block (065) is arranged on the upper end face of the first fixing block (064), a first dovetail strip (066) is arranged on the lower end face of the first clamping block (065), a first dovetail groove (067) allowing the first dovetail strip (066) to slide is arranged on the upper end face of the first fixing block (064) in a penetrating mode, the first fixing block (064) comprises a pair of first block bodies (068), and the first block bodies (068) are fixedly connected through bolts;

go up clamp splice (073) including second fixed block (075), the lower terminal surface of second fixed block (075) is provided with second clamp splice (076), the up end of second clamp splice (076) is provided with second dovetail (077), the lower terminal surface of second fixed block (075) runs through to be provided with the confession second dovetail (078) that second dovetail (077) slided, second fixed block (075) includes a pair of second block (079), and is a pair of pass through bolt fixed connection between second block (079).

10. The numerical control machine tool according to claim 7, characterized in that: the lower end face of the upper mounting plate (052) and the upper end face of the lower mounting plate (053) are both horizontally provided with clamping strips (054), the upper end side wall and the lower end side wall of one side, deviating from the sliding seat (04), of the supporting plate (051) are both horizontally provided with first notches (055) for the clamping strips (054) to be embedded, and the upper mounting plate (052), the lower mounting plate (053) and a pair of clamping strips (054) are all fixed on the supporting plate (051) through bolts;

one side of the supporting plate (051) close to the sliding seat (04) is provided with a second notch (056) for the sliding seat (04) to be embedded, and the lower end of the second notch (056) penetrates through the lower end face of the supporting plate (051).