CN206415973U - A kind of numerically controlled lathe main body - Google Patents

Abstract

The utility model discloses a kind of numerically controlled lathe machine tool main body, including bed piece, main shaft device, feed arrangement, clamping device and cutter holder device；Bed piece includes fulcrum bearing, regulation pin, backbar and mounting seat；Backbar includes first level extension, diagonal brace section and second horizontal-extending section.Connecting seat is provided with the first level extension of backbar, connecting seat is connected in fulcrum bearing, connecting seat inwardly extends to the middle part of diagonal brace section beyond fulcrum bearing；Main shaft device includes main driving transmission system, main spindle box, main shaft and the first chuck, and main spindle box is provided with radiating ribs, and main shaft has axially extending through hole；Clamping device includes clamping drive system, clamping sliding seat, Holding seat, the second servomotor, the second chuck and the first protective cover, and the first protective cover is located on the second servomotor.Structure of the present utility model improves the intensity for seeing bed piece, has carried out more preferable radiating to main shaft device, has preferably protected clamping device.

Description

A kind of numerically controlled lathe main body

Technical field

The utility model is related to numerically controlled lathe.

Background technology

Numerically controlled lathe is a kind of high accuracy, efficient automated machine tool.It is equipped with multistation knife tower or power cutter tower, lathe , can the complicated work such as processing linear cylinder, oblique line cylinder, circular arc and various screw threads, groove, worm screw with extensive process industrial art performance Part, with linear interpolation, the various compensation functions of circular interpolation, and has played in the batch production of complex parts good economy Effect.

For numerically controlled lathe, machine tool main body core, machine tool main body typically by bed piece, axis system, Tool holder system etc. is constituted, and bed piece is supporting member, it is therefore desirable to which it will have enough intensity, axis system is mainly realized The rotation of workpiece, process workpiece when, it is sometimes desirable to rotating speed it is larger, so, main shaft can produce more heat, if can not Timely scatter and disappear, the normal work of axis system will be influenceed.

The content of the invention

In order to improve the intensity of bed piece, main shaft device is preferably radiated, clamping device is preferably protected, this Utility model provides a kind of numerically controlled lathe machine tool main body.

To reach above-mentioned purpose, a kind of numerically controlled lathe machine tool main body, including bed piece, main shaft device, feed arrangement, folder Hold device and cutter holder device；Bed piece includes fulcrum bearing, regulation pin, backbar and mounting seat；Adjust pin and be arranged on fulcrum bearing On, backbar is across in fulcrum bearing, and mounting seat is arranged in supporting two；Prolong below backbar from two ends to middle first level Stretch to be formed first level extension then obliquely extension formed diagonal brace section final level extend to form second horizontal-extending section, The first level extension of backbar is provided with connecting seat, and connecting seat is connected in fulcrum bearing, and connecting seat inwardly prolongs beyond fulcrum bearing Reach the middle part of diagonal brace section；There is main spindle box installation position on backbar, the right side of main spindle box installation position is located on backbar Provided with X direction guiding rails；Main shaft device includes main driving transmission system, main spindle box, main shaft and the first chuck, main driving transmission system peace In the mounting seat of dress, main spindle box is arranged on main spindle box installation position, has oil pocket in main spindle box, and main spindle box is provided with radiating ribs, Main shaft is arranged on bearing housing by bearing, and main shaft has an axially extending through hole, main driving transmission system drives main shaft, the One chuck is arranged on main shaft；Feed arrangement is arranged on bed piece；Described clamping device includes clamping drive system, folder Sliding seat, Holding seat, the second servomotor, the second chuck and the first protective cover are held, clamping drive system is arranged on machine tool With, what clamping sliding seat was slided is located on X direction guiding rails, clamping drive system driving clamping sliding seat motion, Holding seat peace On clamping sliding seat, the second servomotor is arranged on Holding seat, and the second chuck is arranged on the defeated of the second servomotor On shaft, the first protective cover is located on the second servomotor；Cutter holder device includes cross slide, longitudinal slide, the 4th servo Motor and knife rest；What cross slide was slided sets on X direction guiding rails, on feed arrangement driving cross slide；What longitudinal slide was slided sets On cross slide, the 4th servomotor is arranged on longitudinal slide, and knife rest is arranged on the 4th servomotor.

Said structure, using described supporting beam structure, its anti-bending strength preferably, and has reserved one at the middle part of longeron Determine space.Due to using above-mentioned connecting base structure, equivalent to Cantilever Beams are formd, the bearing strength to backbar is improved. When processing workpiece, workpiece is clamped on the first chuck, and main driving transmission system drives main shaft rotation, when the rotating speed of main shaft is larger When, more heat can be produced in main spindle box, a heat part for generation is delivered on main spindle box by lubricating oil, due to master Axle box is exposed outside, and is provided with radiating ribs, therefore, and the area of radiating is big, is conducive to quick heat radiating, when main shaft rotates, holds Easily form distinguished and admirable in through hole, the heat of another part is delivered in through hole through main shaft, by distinguished and admirable radiating, therefore, on The perfect heat-dissipating of main shaft device is stated, main shaft, bearing etc. can be preferably protected.Due to being provided with the first protective cover, accordingly, it is capable to more The good servomotor of protection second.

Further, backbar includes longeron, crossbeam, and longeron includes two, more than two are connected between two longerons Crossbeam, the upper surface of crossbeam is to have gap between V-arrangement face, adjacent crossbeam.So not only strength and stiffness energy of backbar It is guaranteed, and the relative mitigation of weight, when processing workpiece, produced part iron filings are dropped on V-arrangement face, part iron filings Fallen from gap, V-arrangement has guide effect in face of iron filings, allows iron filings to focus on the middle part of beam surface upper, be easy to concentrate and clear up.

Further, be provided with a crossbeam in the top of each fulcrum bearing, crossbeam above fulcrum bearing and fulcrum bearing it Between have gap.Can thus avoid backbar and fulcrum bearing be gross area rigid contact there is provided certain damping space, When processing part, the vibration that cutting is produced is eased between backbar and fulcrum bearing, reduces fulcrum bearing to pedestal Impact.

Further, described main driving transmission system includes main servo motor, drive pulley, driven pulley and skin Band；Main servo motor is bolted in mounting seat, and drive pulley is arranged on the output shaft of main servo motor, driven Belt pulley is arranged on main shaft, and belt is provided between drive pulley and driven pulley.The main driving transmission system will be dynamic Power is directly delivered on the first chuck by main shaft, once stuck phenomenon occurs in the first chuck, belt can be relative to belt pulley Skid, the driving force of main servo motor will not or be seldom delivered on main shaft, play protection main servo motor 4, main shaft and first The effect of chuck.

Further, described main spindle box includes lower house and upper shell；Diaphragm seal is provided between upper shell and lower house, Sealing property is improved, described radiating ribs include lower radiating ribs and upper radiating ribs, and lower radiating ribs are located on lower house, upper radiating ribs It is located on upper shell；Described main shaft includes jackshaft and is located at the end axle at jackshaft two ends, and the diameter of end axle is less than jackshaft Diameter, end axle on be located between jackshaft and bearing be provided with axle sleeve, end axle on be cased be fixed to main spindle box on end cap, Sealing ring is provided between end cap and main shaft, it is to avoid the phenomenon of oil leak.

Further, described clamping sliding seat includes sliding seat, the first connector and driving plate；What sliding seat was slided sets On X direction guiding rails, the first connector includes the first fixed plate and the first connecting plate, and the first fixed plate and the first connecting plate are L-shaped, First fixed plate is fixed on the side wall of sliding seat, and driving plate is fixed on the first connecting plate, in driving plate and the first fixed plate Between be formed with gap, clamping drive system driving driving plate.

Further, sliding seat is kept out plate including sliding panel, the slip bent downwards from the rear and front end of sliding panel, slided certainly The slip limiting plate that the dynamic lower end for keeping out plate extends internally and the slide rail for being located at sliding panel bottom, slide rail include upper slide rail and downslide Rail, glidepath is located at X direction guiding rails provided with V-shaped groove, and the lower surface of upper slide rail is supported by X direction guiding rails, and slip keeps out plate positioned at X The side of direction guiding rail, slip limiting plate is located on the bottom surface of X direction guiding rails.

Further, longitudinal slide includes longitudinal sliding block and the motor cabinet on longitudinal sliding block, and longitudinal sliding block is slided Be located on cross slide；There is accommodating cavity, one end of accommodating cavity has circular open, set in the bottom of accommodating cavity in motor cabinet There is mounting platform, step surface is formed between mounting platform and circular open；4th servomotor is arranged on mounting platform and position In in accommodating cavity；Terminal pad is connected with the output shaft of the 4th servomotor, described terminal pad includes disk body and is located at disk The connecting rod of body one end, connecting rod has jack, and the output shaft of the 4th servomotor is inserted into jack, and disk body is located at opening It is interior；Knife rest includes knife rest plate and the connecting pole being located on knife rest plate and the locating dowel being located on connecting pole, and the diameter of locating dowel is small In the diameter of connecting pole, locating dowel is connected by bolt with disk body, and locating dowel is located in opening, and the end face of connecting pole is located at motor The left side of seat.Before machining is carried out, by Cutting tool installation manner on knife rest plate, when chip is processed, cutter can be by larger Cutting force, locating dowel is extend into opening, then the power that cutter is subject to is delivered on motor cabinet through knife rest, and master is born by motor cabinet The chip power wanted, cutting force is born without the 4th servomotor, as long as the 4th servomotor is responsible for transmission revolving force, Therefore, it is effectively protected the 4th servomotor.

Brief description of the drawings

Fig. 1 is the stereogram of machine tool main body.

Fig. 2 is the exploded view of machine tool main body.

Fig. 3 is the stereogram of bed piece.

Fig. 4 is the top view of machine tool main body.

Fig. 5 is D-D sectional views in Fig. 4.

Fig. 6 is E-E sectional views in Fig. 4.

The stereogram of transmission system is driven based on Fig. 7.

The exploded view of transmission system is driven based on Fig. 8.

Fig. 9 is the stereogram of feed arrangement, clamping device and cutter holder device.

Figure 10 is the exploded view of feed arrangement, clamping device and cutter holder device.

Figure 11 is the stereogram of motor cabinet.

Embodiment

The utility model is further elaborated with reference to the accompanying drawings and detailed description.

As shown in Figure 1 to Figure 2, described machine tool main body 4 includes bed piece 41, main shaft device 42, feed arrangement 43, folder Hold device 44 and cutter holder device 45.

As shown in Figures 2 and 3, bed piece 41 includes fulcrum bearing 411, regulation pin 412, backbar 413 and mounting seat 414。

Fulcrum bearing 411 is two, and regulation pin 412 is arranged on the bottom of fulcrum bearing 411, can be reached by adjusting regulation pin 412 To the purpose of adjustment numerically controlled lathe level.Fulcrum bearing 411 passes through through hole 111, is connected angle bar 112 with fulcrum bearing 412 by screw Pick up and, so, whole numerically controlled lathe is supported indeed through the fulcrum bearing 411 of machine tool main body 4, without machine tool enclosure Supporting, in terms of stress, machine tool main body 4 is supported by its own, without being supported by machine tool enclosure 1 so that whole numerical control The supporting stabilizer of lathe is good.

Backbar 413 includes longeron 4131, crossbeam 4132, and longeron 4131 includes two, is connected between two longerons 4131 There is a crossbeam 4132 of more than two, the upper surface of crossbeam is to have gap between V-arrangement face, adjacent crossbeam, so not only backbar Strength and stiffness can be guaranteed, and weight is relative mitigates, and when processing workpiece, produced part iron filings drop into V On shape face, part iron filings are fallen from gap, and V-arrangement has guide effect in face of iron filings, allows iron filings to focus in beam surface upper Portion, is easy to concentrate and clears up.It is then oblique from two ends to middle first horizontal-extending formation first level extension below longeron 4131 Upwardly extend and to form diagonal brace section final level and extend to form second horizontal-extending section, the longeron of this structure, its anti-bending strength compared with It is good, and reserved certain space at the middle part of longeron.The connecting seat stretched out is provided with the first level extension of longeron 4133, connecting seat 4133 is bolt-connected in fulcrum bearing 411, in order to improve the bearing strength to backbar, connecting seat 4133 inwardly extend to the middle part of diagonal brace section beyond fulcrum bearing, thus equivalent to Cantilever Beams are formd, improve to backbar Bearing strength.

A crossbeam 4132, crossbeam 4132 and fulcrum bearing above fulcrum bearing are provided with the top of each fulcrum bearing 411 Have gap 40 between 411, can thus avoid backbar and fulcrum bearing be gross area rigid contact there is provided certain subtract Space is shaken, when processing part, the vibration that cutting is produced is eased between backbar and fulcrum bearing, reduces fulcrum bearing pair The impact of pedestal.

There is main spindle box installation position 4134 on longeron 4131.It is located on longeron 4131 on the right side of main spindle box installation position and sets There are X direction guiding rails 4135, X direction guiding rails 4135 are provided with V-shaped groove.

Mounting seat 414 includes L-shaped supporting seat 4141 and fagging 4142, and L-shaped supporting seat 4141 is fixed therein a fulcrum bearing On, fagging 4142 is welded on L-shaped supporting seat 4141, improves bearing strength.

As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 5, main shaft device 42 includes main driving transmission system 421, main spindle box 422, main shaft 423rd, sleeve 424, bearing 425, the chuck 427 of end cap 426 and first.

As shown in Fig. 2, Fig. 7 and Fig. 8, described main driving transmission system 421 includes main servo motor 4211, drive pulley Wheel 4212, driven pulley 4213 and belt 4214.Main servo motor 4211 is bolted in mounting seat 414, actively Belt pulley 4212 is arranged on the output shaft of main servo motor 4211, and driven pulley 4213 is arranged on main shaft 423, actively Belt 4214 is provided between belt pulley 4212 and driven pulley 4213.Power is passed through main shaft by the main driving transmission system 421 423 are directly delivered on the first chuck 427, once stuck phenomenon occurs in the first chuck 427, belt can be beaten relative to belt pulley Sliding, the driving force of main servo motor 4211 will not or be seldom delivered on main shaft 423, plays protection main servo motor 4211, master The effect of the chuck 427 of axle 423 and first.

As shown in Fig. 2, Fig. 4 to Fig. 8, described main spindle box 422 includes lower house 4221 and upper shell 4221.

Described lower house 4221 includes bottom plate 42211 and lower side panel 42212.The bottom surface of bottom plate 42211 is provided with groove 42213, stretch out in the periphery of bottom plate 42211 provided with lower flange 42214, in the upper end of lower side panel provided with stretching out Flange 42215.Lower radiating ribs 42216 are provided with the outer surface of front and rear lower side panel.Under being respectively equipped with the lower side panel of left and right Semi-circular hole 42217, is respectively equipped with the lower half annulus 42218 coaxial with lower semi-circular hole on the lateral surface of left and right lower side panel, It is located on the lower side panel of left and right between lower half circle ring and lower flange and is provided with lower web plate 42219.

Described upper shell 4222 includes top plate 42221 and epipleural 42222.It is outside in the lower edge of epipleural 42222 Extension is provided with upper flange 42223.Side flange 42224 is extended with to the left and to the right respectively at left and right epipleural edge.In top plate Convex tendon 42225 of 42221 middle part provided with left and right arrangement, is provided with upward from convex tendon on top plate 42221 and front and rear epipleural The upper radiating ribs 422250 of flange extension.Upper half circular hole 42226 is respectively equipped with the epipleural of left and right, the epipleural in left and right On be respectively equipped with upper half annulus 42227 with upper half circular hole coaxial, upper half annulus is connected as one with upper flange.In side convex tendon with Upper gusset 42228 is provided between upper half annulus.Suspension ring 42229 are provided with convex tendon 42225.

Lower flange 42214 is arranged on main spindle box installation position 4134 by bolt, upper flange 42223 and flange 42215 It is bolted.After lower house and upper shell are connected, formed in main spindle box 422 and lubricating oil is contained in oil pocket, oil pocket.On After lower house is installed, upper half circular hole and upper half circular hole formation mounting hole.In order to improve sealing property, in upper flange and flange Between be clamped with diaphragm seal.Using the structure of upper-lower casing, main shaft, bearing, axle sleeve are easily installed.

As shown in Figure 2 and Figure 8, the described jackshaft 4231 of main shaft 423 and the end axle 4232 for being located at the two ends of jackshaft 4231, The external diameter of jackshaft is more than the external diameter of end axle.There is the through hole 4233 of axial direction in main shaft 423.

Bearing 425 is installed in mounting hole, the end axle of main shaft passes through bearing 425, and main shaft 423 is supported by bearing 425. It is located on the axle 4232 of end and axle sleeve 424 is cased between jackshaft and the inner ring of bearing, axial limiting is carried out to main shaft by axle sleeve.

End cap 426 is installed on main spindle box 422, described end cap 426 includes cover plate 4261 and positioning sleeve 4262, positioning It is set in the side of cover plate.Cover plate 4261 is bolted on upper half annulus and lower half annulus, by setting upper lower half circle The fixation of ring, then end cap 426, main spindle box is also not easy crackle occur, further, since there is provided upper lower web plate, therefore, on The bonding strength of lower half annulus is high.Positioning sleeve 4262 is inserted into mounting hole and is enclosed on the axle of end, between positioning sleeve and mounting hole With space, it is located on the axle of end in space and is provided with sealing ring, prevent the oil leakage in main spindle box.

First chuck 427 is installed on main shaft.

When processing workpiece, workpiece is clamped on the first chuck 427, and main driving transmission system 421 drives main shaft 423 to revolve Turn, the rotating speed of main shaft is adjusted according to the demand of processing by main servo motor, when the rotating speed of main shaft is larger, in main spindle box 422 Interior to produce more heat, a heat part for generation is delivered on main spindle box 422 by lubricating oil, because main spindle box is exposed Outside, and be provided with upper, middle and lower flange, upper radiating ribs, lower radiating ribs, upper gusset and lower web plate, therefore, the area of radiating Greatly, be conducive to quick heat radiating, when main shaft rotates, easily form distinguished and admirable in through hole, the heat of another part is transmitted through main shaft Into through hole, by distinguished and admirable radiating, therefore, above-mentioned main shaft device is perfect heat-dissipating, can preferably protect main shaft, bearing Deng.

As shown in Figure 1, Figure 2, shown in Fig. 9 and Figure 10, described feed arrangement 43 includes the first servomotor 431, feed screw 432nd, feed nut 433 and first shaft coupling 434.First servomotor 431 is fixed on bed piece 41, feed screw 432 It is arranged on by bearing and bearing block on bed piece 41, feed nut 433 is engaged on feed screw, the first servomotor Output shaft is connected by first shaft coupling 434 with feed screw.

When the first servomotor works, the first servomotor drives feed screw to rotate by first shaft coupling, feeding Screw mandrel driving feed nut linear motion.

As shown in Figure 9 and Figure 10, described clamping device 44 includes clamping drive system 441, clamping sliding seat 442, folder Hold base 443, the second servomotor 444, the second chuck 445 and the first protective cover 446.

Clamping drive system 441 includes the 3rd servomotor 4411, drive screw 4412, drive nut 4413, second Axle device 4414.3rd servomotor 4411 is fixed on bed piece 41, and drive screw 4412 is installed by bearing and bearing block On bed piece, drive nut 4413 is engaged in drive screw 4412, and the 3rd servomotor 4411 passes through second shaft coupling 4414 are connected with drive screw.

When 3rd servomotor works, the 3rd servomotor drives drive screw to rotate by second shaft coupling, drives silk Bar drives drive nut linear motion.

Described clamping sliding seat 442 includes sliding seat, the first connector and driving plate 4427.Sliding seat includes sliding panel 4421st, the slip bent downwards from the rear and front end of sliding panel keeps out plate 4422, keeps out what the lower end of plate extended internally from sliding Slip limiting plate 4423 and the slide rail 4424 for being located at sliding panel bottom, slide rail 4424 include upper slide rail and glidepath, and glidepath is set Provided with V-shaped groove on X direction guiding rails 4135, the lower surface of upper slide rail is supported by X direction guiding rails 4135, and slip is kept out plate 4422 and is located at The side of X direction guiding rails 4135, slip limiting plate 4423 is located on the bottom surface of X direction guiding rails 4135.

First connector includes the first fixed plate 4425 and the first connecting plate 4426, and the first fixed plate and the first connecting plate are in L-shaped, the first fixed plate 4425 is fixed on the side wall of sliding seat, and driving plate 4427 is fixed on the first connecting plate 4426, is being driven Gap is formed between the dynamic fixed plate of plate 4427 and first, drive nut is fixed in driving plate 4427.

Holding seat 443 is arranged on clamping sliding seat 442 by screw, and the second servomotor 444 is arranged on clamping bottom On seat 443, the second chuck 445 is arranged on the second servo motor output shaft, and the first protective cover 446 is located at the second servomotor On.Ventilating opening 4461 is provided with the first protective cover 446.

When 3rd servomotor works, drive screw drives drive nut linear motion, and drive nut drives driving plate 4427 motions, driving plate 4427 drives sliding seat to be moved on X direction guiding rails 4135 by the first connector.In addition, the second servo Motor can drive the second chuck to rotate.

As shown in Fig. 6, Fig. 9 and Figure 10, cutter holder device 45 includes cross slide 451, longitudinal slide 452, the 4th servo electricity Machine 453 and knife rest 454.What cross slide 451 was slided is set on X direction guiding rails 4135, and feed nut is fixed on cross slide.It is described Longitudinal slide 452 include longitudinal sliding block 4521 and the motor cabinet 4522 on longitudinal sliding block 4521, longitudinal sliding block slide Be located on cross slide.As shown in Fig. 6 and Figure 11, there is accommodating cavity 4523, one end of accommodating cavity 4523 in motor cabinet 4522 With circular open 4524, mounting platform 4525, mounting platform 4525 and circular open are provided with the bottom of accommodating cavity 4523 Step surface 4526 is formed between 4524.

4th servomotor 453 is arranged on mounting platform 4525 and in accommodating cavity 4523.In the 4th servomotor Output shaft on be connected with terminal pad 455, described terminal pad 455 includes disk body 4551 and is located at the connection of the one end of disk body 4551 Bar 4552, connecting rod has jack, and the output shaft of the 4th servomotor is inserted into jack, and disk body 4551 is located in opening.Such as Shown in Fig. 6 and Figure 10, knife rest 454 includes knife rest plate 4541 and the connecting pole 4542 being located on knife rest plate and is located on connecting pole Locating dowel 4543, the diameter of locating dowel is less than the diameter of connecting pole, and locating dowel 4543 is connected by bolt with disk body 4551, is positioned Post 4543 is located in opening, and the end face of connecting pole is located at the left side of motor cabinet.

Before machining is carried out, by Cutting tool installation manner on knife rest plate 4541, when chip is processed, cutter can be by larger Cutting force, by locating dowel extend into opening in, then the power that cutter is subject to is delivered on motor cabinet through knife rest, is born by motor cabinet Main chip power, cutting force is born without the 4th servomotor, as long as the 4th servomotor is responsible for transmission, revolving force is Can, therefore, it is effectively protected the 4th servomotor.

When the first servomotor works, feed nut drives cross slide motion, cross slide to drive longitudinal slide, the Four servomotors 453 and knife rest 454 are moved, and reach the purpose of cutting feed, and longitudinal slide is driven by zigzag tread patterns system in addition Dynamic motion, zigzag tread patterns system is made up of servomotor, screw mandrel, nut, belongs to existing drive system, in addition, the 4th servo Motor can be with movable knife rack rotation, so as to reach the purpose of automatic tool changer.

Claims (8)

1. a kind of numerically controlled lathe machine tool main body, including bed piece, main shaft device, feed arrangement, clamping device and cutter holder device； It is characterized in that：Bed piece includes fulcrum bearing, regulation pin, backbar and mounting seat；Adjust pin to be arranged in fulcrum bearing, supporting Beam is across in fulcrum bearing, and mounting seat is arranged in supporting two；From two ends to middle first horizontal-extending formation below backbar First level extension and then obliquely extension form diagonal brace section final level and extend to form second horizontal-extending section, in backbar First level extension be provided with connecting seat, connecting seat is connected in fulcrum bearing, and connecting seat is inwardly extended to tiltedly beyond fulcrum bearing Support the middle part of section；On backbar have main spindle box installation position, on backbar positioned at main spindle box installation position right side provided with X to Guide rail；Main shaft device includes main driving transmission system, main spindle box, main shaft and the first chuck, the peace that main driving transmission system is installed Fill on seat, main spindle box is arranged on main spindle box installation position, there is oil pocket in main spindle box, main spindle box is provided with radiating ribs, and main shaft leads to Bearing is crossed on bearing housing, main shaft has axially extending through hole, main driving transmission system drives main shaft, the first chuck On main shaft；Feed arrangement is arranged on bed piece；Described clamping device includes clamping drive system, clamping and slided Seat, Holding seat, the second servomotor, the second chuck and the first protective cover, clamping drive system are arranged on bed piece, folder Hold sliding seat slip be located on X direction guiding rails, clamping drive system driving clamping sliding seat motion, Holding seat be arranged on clamping On sliding seat, the second servomotor is arranged on Holding seat, and the second chuck is arranged on the output shaft of the second servomotor, the One protective cover is located on the second servomotor；Cutter holder device includes cross slide, longitudinal slide, the 4th servomotor and knife Frame；What cross slide was slided sets on X direction guiding rails, on feed arrangement driving cross slide；What longitudinal slide was slided is located at horizontal cunning On plate, the 4th servomotor is arranged on longitudinal slide, and knife rest is arranged on the 4th servomotor.

2. numerically controlled lathe machine tool main body according to claim 1, it is characterised in that：Backbar includes longeron, crossbeam, longeron Including two, the crossbeam of more than two is connected between two longerons, the upper surface of crossbeam is between V-arrangement face, adjacent crossbeam There is gap.

3. numerically controlled lathe machine tool main body according to claim 2, it is characterised in that：One is provided with the top of each fulcrum bearing There is gap between crossbeam, the crossbeam and fulcrum bearing above fulcrum bearing.

4. numerically controlled lathe machine tool main body according to claim 1, it is characterised in that：Described main driving transmission system includes Main servo motor, drive pulley, driven pulley and belt；Main servo motor is bolted in mounting seat, actively Belt pulley is arranged on the output shaft of main servo motor, and driven pulley is arranged on main shaft, in drive pulley and driven skin Belt is provided between belt wheel.

5. numerically controlled lathe machine tool main body according to claim 1, it is characterised in that：Described main spindle box include lower house and Upper shell；Diaphragm seal is provided between upper shell and lower house, described radiating ribs include lower radiating ribs and upper radiating ribs, lower radiating Muscle is located on lower house, and upper radiating ribs are located on upper shell；Described main shaft includes jackshaft and is located at the end at jackshaft two ends Axle, the diameter of end axle is less than the diameter of jackshaft, is located on the axle of end between jackshaft and bearing and is provided with axle sleeve, is covered on the axle of end Have fixed to the end cap on main spindle box, sealing ring is provided between end cap and main shaft.

6. numerically controlled lathe machine tool main body according to claim 1, it is characterised in that：Described clamping sliding seat includes sliding Seat, the first connector and driving plate；What sliding seat was slided is located on X direction guiding rails, and the first connector includes the first fixed plate and the One connecting plate, the first fixed plate and the first connecting plate are L-shaped, and the first fixed plate is fixed on the side wall of sliding seat, and driving plate is solid It is scheduled on the first connecting plate, gap, clamping drive system driving driving plate is formed between driving plate and the first fixed plate.

7. numerically controlled lathe machine tool main body according to claim 6, it is characterised in that：Sliding seat includes sliding panel, slided certainly The slip that the rear and front end of plate is bent downwards keeps out plate, keeps out the slip limiting plate and be located at that the lower end of plate extends internally from sliding The slide rail of sliding panel bottom, slide rail includes upper slide rail and glidepath, and glidepath is located at X direction guiding rails and is provided with V-shaped groove, upper slide rail Lower surface supported by X direction guiding rails, slide keep out plate be located at X direction guiding rails side, slip limiting plate be located at X direction guiding rails bottom surface On.

8. numerically controlled lathe machine tool main body according to claim 1, it is characterised in that：Longitudinal slide includes longitudinal sliding block and peace Motor cabinet on longitudinal sliding block, what longitudinal sliding block was slided is located on cross slide；There is accommodating cavity, accommodating cavity in motor cabinet One end there is circular open, the bottom of accommodating cavity be provided with mounting platform, step is formed between mounting platform and circular open Face；4th servomotor is arranged on mounting platform and in accommodating cavity；It is connected with the output shaft of the 4th servomotor Terminal pad, described terminal pad includes disk body and is located at the connecting rod of disk body one end, and connecting rod has jack, the 4th servomotor Output shaft be inserted into jack, disk body be located at opening in；Knife rest includes knife rest plate and the connecting pole being located on knife rest plate and set Locating dowel on connecting pole, the diameter of locating dowel is less than the diameter of connecting pole, and locating dowel is connected by bolt with disk body, is positioned Post is located in opening, and the end face of connecting pole is located at the left side of motor cabinet.