CN103182655B - Multi-cutter process valve numerical control double-slider unit head - Google Patents
Multi-cutter process valve numerical control double-slider unit head Download PDFInfo
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- CN103182655B CN103182655B CN201310077678.5A CN201310077678A CN103182655B CN 103182655 B CN103182655 B CN 103182655B CN 201310077678 A CN201310077678 A CN 201310077678A CN 103182655 B CN103182655 B CN 103182655B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The present invention relates to a kind of multi-cutter process valve numerical control double-slider unit head, comprise ram seat, square ram, facing head, slide block, main spindle box, body, cutter frame mechanism etc.Side's ram is arranged in ram seat, ram front end, side connects facing head, two slide blocks installed by facing head, knife rest respectively symmetry is fixed on facing head, ram rear end, side connects main spindle box, the main spindle box other end connects body, body connects servomotor, main shaft alternating-current variable frequency motor is connected with by connected body in the upper end of main spindle box, the shift fork oil cylinder of the relative side of motor is connected on main spindle box, and main shaft is through square ram, and one end of main shaft is connected on facing head, the other end is connected in main spindle box, and the center of main shaft is connected to mandrel.Machining accuracy of the present invention is high, reduce labor strength, enhance productivity and product percent of pass.
Description
Technical field:
The present invention relates to a kind of multi-cutter process valve numerical control double-slider unit head.Mainly process the machining of pump valve flange, the valve that the present invention is applicable to processing has: gate valve, stop valve, check-valves, butterfly valve, pressure-reducing valve etc. are with the valve body piece of flange.
Background technology:
The processing of current domestic pump valve manufacturing enterprise to valve part adopts engine lathe usually, vertical car, the simple nc machine of Digit Control Machine Tool or the transformation of the way of common universal machine processes valve flange, but Digit Control Machine Tool also has limitation, mainly valve body blank size and sprue gate height difference very large, great difficulty is brought to Numerical Control Programming, valve body blank flange one end is clamped on machine chuck when processing valve body by these lathes, workpiece is driven to rotate turning flange by chuck, after completing, tune clamping cuts the other end, two end flanges to machine in aft-loaded airfoil flange to be needed on chuck, fix special fixture and carrys out clamping valve, carry out the processing of middle head flange, cause clamping poor rigidity.The shortcoming of valve body conventional machining process is:
(1) workman's clamping workpiece on lathe is consuming time, has potential safety hazard, as heavy caliber valve body needs driving or tailstock auxiliary clamping, also needs centering to clamp.
(2) traditional handicraft rotates to be principal cutting movement with workpiece, and centrifugal force causes very greatly workpiece rotary speed slow, and affects the stability of piece-holder, and sometimes needing tailstock to withstand valve body could process.
(3) valve body all will be carried out clamping and correction by each procedure of traditional handicraft, certainly will affect workpiece precision, labor strength, safety like this, reduces production efficiency and product percent of pass.
(4) repeatedly feeding is needed just can to complete processing when cutting.Pump valve flange turnery processing needs the multiple operation such as cylindrical, end face, chamfering, endoporus, waterline groove and completes, and common lathe saddle generally can only once mounting four cutter, cause the thick smart cutter of a lot of situation to share one, affect cutter life, and affect flange surface quality.
Summary of the invention:
The present invention is between the deficiency of above-mentioned traditional pump valve processing technology, and a kind of numerical control double-slider multi-cutter process unit head provided, object is the clamping process of improvement workpiece and repeatedly cuts feeding problem.This unit head adopts boring processing technology, cutter rotates to realize principal cutting movement, therefore workpiece can be processed by clamping on stationary fixture, if this unit head configuration lathe general utility functions parts NC rotary table can realize the processing of clamped one time multiaspect.Manufacturing procedure can be made like this to concentrate, reduce clamping workpiece number of times, not only can shorten non-cutting time, and be easy to the relative positional accuracy ensureing each surface processed in once mounting.This unit head facing head is configured with double-slider and multitool clamp structure knife rest, multitool in cutting at one time feeding process is made to participate in cutting, turning can have 6 cuttves to cut simultaneously, and cutting end face can have 4 cuttves to cut and waterline groove and inside and outside circle chamfering can reach and complete fast simultaneously; The slide block of this facing head and knife rest are all balanced configurations in addition, make principal cutting movement reach dynamic equilibrium state.Adopt multiple cut can solve repeatedly feeding problem, crudy can be improved again, because valve body manufacturing procedure should be divided into roughing and fine finishining usually, roughing chipping allowance is large, cutting force is also large, and heat in metal cutting is also higher, due to internal stress redistribution after roughing, make workpiece deformation comparatively large, thus after roughing again fine finishining workpiece can be made to obtain higher precision and roughness.
The technical scheme realizing above-mentioned purpose is as follows:
Multi-cutter process valve numerical control double-slider unit head, comprise ram seat 11, side's ram 14, main spindle box 18, body 19, servomotor 55, facing head 2, main shaft alternating-current variable frequency motor 36, shift fork oil cylinder 29, described side's ram 14 front end connects facing head 2, ram 14 rear end, side connects main spindle box 18, main spindle box 18 other end connects body 19, body 19 connects servomotor 55, main shaft alternating-current variable frequency motor 36 is connected with by connected body 35 in the upper end of main spindle box 18, the center of main shaft is connected to mandrel 13, facing head 2 is located with main shaft 12 and is connected, shift fork oil cylinder 29 is also connected on main spindle box 18, installation two slide blocks 1 symmetrical in the heart in facing head 2, on each slide block 1, each symmetry is fixed a knife rest 2 72 and is done symmetric motion and be used for turning end, knife rest 2 72 moves along slide block, knife rest 2 72 rotates together with facing head 2, facing head 2 is also symmetrically fixed with two knife rests 1, knife rest 1 also can move on facing head 2, knife rest 1 is used for turning flange excircle, the line of knife rest 2 72 is vertical with the line of knife rest 1, the feed speed of size and end face to be controlled by servomotor 55 through slowing down, slide block 1 is actively connected on facing head 2 by wedge 39, pressing plate 2 38, pressing plate 1, slide block 1 is located with ball wire pole socket 6 and is connected, ball wire pole socket 6 is located with ball screw nut and is connected, ball screw 7 bearing 1 connects with facing head 2, thus band movable slider does transverse movement during ball screw rotation, slide block 1 in-movement is realized the control of driving and movement velocity jointly by body 19 by mandrel 13.
Preferably, knife rest 2 72 side is fixed with skewback 83, facing head 2 is also connected with push rod 81, fixed block 82, connecting rod 80, push rod 81 is movably connected on facing head, push rod 81 can move up and down, the bottom of push rod 81 and skewback 83 are on a horizontal plane, fixed block 82 is used for fixing push rod 81, knife rest 1 is connected with gear 15, tooth bar 77, duplicate gear 76, duplicate gear 76 is connected with tooth bar 77, tooth bar 77 is connected with gear 15, gear 15 is connected with connecting rod 80, after knife rest 2 72 cutting end face operation completes, side's ram 14 slow astern segment distance, now slide block 1 continues transverse shifting, allow the fixing skewback 83 in knife rest 2 72 side promote push rod 81 move up, push rod 81 pushes connecting rod 80 and rotates, driven gear 15 rotates, tooth bar 77 is driven mobile by gear 15, by tooth bar 77 driven rotary after duplicate gear 76 is connected by bearing 14 location.
Fixed block 82 is used for fixing push rod 81, facing head 2 is located with main shaft 12 and is connected, slide block 1 is actively connected on facing head 2 by wedge 39, pressing plate 2 38, pressing plate 1, slide block 1 is located with ball wire pole socket 6 and is connected, ball wire pole socket 6 is located with ball screw nut and is connected, ball screw 7 bearing 1 connects with facing head 2, thus band movable slider does transverse movement during ball screw rotation, slide block 1 in-movement is realized the control of driving and movement velocity jointly by body 19 by mandrel 13.
Preferably, side's ram 14 is connected by front and back main shaft bearing 28 with internal spindle 12, side's ram 14 is fixed with ball wire pole socket 42, ram seat 11 is fixed with ball screw 41 by bearing 7 40, ball wire pole socket 42 connects with ball screw nut, synchronous pulley 2 67 is fixed on servomotor 64, servomotor 64 is fixed on casing 68, with Timing Belt 66 by synchronous pulley 1, synchronous pulley 2 67 connects, thus ball screw 41 when rotating the side's of drive ram 14 moved horizontally the motion of cutter length feed, main shaft alternating-current variable frequency motor 36 is fixed by connector 35 and main spindle box 18.
Preferably, main shaft alternating-current variable frequency motor 36 output shaft 30 is provided with high low speed mechanism, the High Rotation Speed of high low speed mechanism is made up of gear 6 28, gear 8 32, low speed rotation is made up of gear 5 27, gear 7 31, gear 7 31 and gear 8 32 are socketed on axle 30, be connected with shift fork block 33 in shift fork oil cylinder 29, high low speed switching has been moved through shift fork block 33 driven gear 7 31, gear 8 32 by shift fork oil cylinder 29 on axle 30, realizes the high low-speed rotation of facing head.
High low speed mechanism is to meet different processing requests.
Side's ram 14 and ram seat 11, ram lid 10 is actively coupled by adjustment wedge 9, side's ram 14 is connected by front and back main shaft bearing 28 with internal spindle 12, on ball wire pole socket 42 side of being fixed on ram 14, ball screw 41 is fixed in ram seat 11 by bearing 7 40, ball wire pole socket 42 connects with ball screw nut, synchronous pulley 2 67 is fixed on servomotor 64, and servomotor 64 is fixed on casing 68, with Timing Belt 66 by synchronous pulley 1, synchronous pulley 2 67 connects, thus when ball screw 41 rotates, the side's of drive ram 14 has moved horizontally the motion of cutter length feed, and main shaft alternating-current variable frequency motor 36 is fixed by connector 35 and main spindle box 18, axle 30, axle 25, axle 22, bearing 4 20 used respectively by axle sleeve 16, bearing 3 17, bearing 34, bearing 5 26 is fixed with main spindle box 18, gear 1, gear 2 21, gear 3 23, gear 4 24, gear 5 27, gear 6 28 respectively with axle 22, axle 25, axle sleeve 16 is fixed, and axle sleeve 16 connects with main shaft 12, in order to meet different processing requests.
Preferably, also have bevel gear 24 in facing head 2, ball screw 7 is socketed with bevel gear 1, mandrel 13 is connected with facing head 2 by bevel gear 24, and bevel gear 24 drives ball screw 7 to rotate and makes slide block 1 in-movement.
The present invention can realize two-axle interlocking processing, except above-mentioned requirements manufacturing procedure, also can realize valve body internal and external screw thread machining.
The present invention adopts modularized design, assembling, detect, easy to maintenance.
The numerical control cutting unit head of the present invention's configurable rotary table clamped one time multiaspect processing.
Accompanying drawing illustrates:
Fig. 1 is overall appearance figure of the present invention
Fig. 2 is the partial enlarged drawing of Fig. 1
Fig. 3 is the partial enlarged drawing of Fig. 1
Fig. 4 is the main sectional view of the present invention
Fig. 5 is the partial enlarged drawing of Fig. 4
Fig. 6 is the partial enlarged drawing of Fig. 4
Fig. 7 is that the present invention bows sectional view
Fig. 8 is A-A direction sectional view in Fig. 7
Fig. 9 is turning cutter action front view
Figure 10 is the side view of Fig. 9
Figure 11 is face work cutter action front view
Figure 12 is the side view of Figure 11
Figure 13 is turning cutter action front view
Figure 14 is the side view of Figure 13
Figure 15 is facing head schematic diagram
Figure number illustrates: slide block 1, facing head 2, bevel gear 1, bevel gear 24, bearing 1, ball wire pole socket 6, ball screw 7, bearing 28, adjustment wedge 9, ram lid 10, ram seat 11, main shaft 12, mandrel 13, side's ram 14, gear 1, axle sleeve 16, bearing 3 17, main spindle box 18, body 19, bearing 4 20, gear 2 21, axle 22, gear 3 23, gear 4 24, axle 25, bearing 5 26, gear 5 27, gear 6 28, shift fork oil cylinder 29, axle 30, gear 7 31, gear 8 32, shift fork block 33, bearing 6 34, connected body 35, main shaft alternating-current variable frequency motor 36, pressing plate 1, pressing plate 2 38, wedge 39, bearing 7 40, ball screw 41, ball wire pole socket 42, bearing 8 43, axle 44, bearing 9 45, gear 9 46, differential body 47, axle 48, gear 10, gear 11, gear 12, gear 13, bearing 53, case lid 54, servomotor 55, gear 14, bearing 10, bearing 11, gear shaft 1, bearing 12, bearing 13, gear shaft 2 62, axle sleeve 63, servomotor 64, synchronous pulley 1, Timing Belt 66, synchronous pulley 2 67, casing 68, knife rest 1, cutter 70, cutter 71, knife rest 2 72, cutter 73, knife rest 74, cutter 75, duplicate gear 76, tooth bar 77, bearing 14, gear 15, connecting rod 80, push rod 81, fixed block 82, skewback 83.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention is described in detail.Except inventive point of the present invention, remaining technology is same as the prior art.
The valve of the present invention's processing has: gate valve, stop valve, check-valves, butterfly valve, pressure-reducing valve etc., as long as there is valve body piece the present invention of flange layout to process.Except inventive point of the present invention, remaining technology is same as the prior art.
Multi-cutter process valve numerical control double-slider unit head, comprise ram seat 11, side's ram 14, facing head 2, slide block 1, main spindle box 18, body 19, cutter frame mechanism, side's ram 14 is arranged in ram seat 11, ram 14 front end, side connects facing head 2, cutter frame mechanism comprises knife rest 1, knife rest 2 72, two slide blocks 1 installed by facing head 2, on each slide block 1, each symmetry is fixed a knife rest 2 72 and is done symmetric motion and be used for turning end, facing head 2 is also symmetrically fixed with two knife rests 1, be used for turning flange excircle, the feed speed of size and end face to be controlled by servomotor 55 through slowing down, ram 14 rear end, side connects main spindle box 18, main spindle box 18 other end connects body 19, body 19 connects servomotor 55, main shaft alternating-current variable frequency motor 36 is connected with by connected body 35 in the upper end of main spindle box 18, the shift fork oil cylinder 29 of the relative side of motor is connected on main spindle box 18, main shaft 12 is through square ram 14, one end of main shaft 12 is connected on facing head 2, the other end is connected in main spindle box 18, the center of main shaft is connected to mandrel 13.
Differential body 47 bearing 11 and body 19 are fixed, differential body 47 is provided with four axles 48, four groups of gears, be respectively gear 13, gear 9 46, gear 10, gear 11, gear shaft 2 62 bearing 13 connects with body 19, gear shaft 1 bearing 12 connects with gear shaft 2 62, axle 44 Support Gear 10, gear 11, gear 12, gear 14 is fixed with servomotor 55, servomotor 55 case lid 54 is fixed in body 19, gear shaft 2 62 connects with axle sleeve 16, gear shaft 1 connects with axle sleeve 63, the rotating speed of gear shaft 1 is rotating speed and the rotating speed sum of servomotor 55 after gear reduction of facing head 2, warp beam sleeve 63 again, mandrel 13 passes to bevel gear 24.Now bevel gear 1 is used for offsetting the rotating speed that facing head 2 passes to gear shaft 1 by facing head driven rotary, and namely bevel gear 24 reality is for servomotor 55 is by passing to the rotating speed of mandrel 13 after gear reduction, meets institution requests.
Meanwhile, servomotor 55 is transmitted torque on mandrel 13 by gear 14 and box of tricks, then drives ball screw 7 rotation to make slide block 1 in-movement by bevel gear 24.
This multi-cutter process valve numerical control double-slider unit head processing technology principle: cut face cutter on knife rest 2 72, knife rest 2 72 is installed on the slider 1, rotate together with facing head 2, complete end face principal cutting movement, the feed of end face cross cutting has been moved by slide block 1, and feed is controlled by digital control system by servomotor 55.Turning cutter is fixed on knife rest 1, and knife rest 1 is connected and fixed in facing head 2 end face T-slot two, and cylindrical straight-cut feed is completed by the horizontal movement of square ram 14, and feed is controlled by digital control system by servomotor 64.Mounting cutter on knife rest.
Facing head 2 has groove (not shown), slide block 1 is placed in groove, fit depressions on the length of slide block 1 and width and facing head 2, the centre of slide block 1 has locating slot one 2-1 of knife rest 2 72, the both sides of locating slot one 2-1 are arranged symmetrically with T-slot one 2-2, in the middle of the bottom of knife rest 2 72, there is positioning key two 72-1, the both sides of positioning key two 72-1 are arranged symmetrically with T-shaped bolt hole (not shown), positioning key two 72-1 places in locating slot one 2-1 on the slider 1 and is used for locating, the T-shaped bolt (not shown) of knife rest 2 72 is fixed on T-slot one 2-2 of slide block 1, knife rest 2 72 moves together along slide block 1, follow facing head 2 to rotate together.
Facing head 2 has locating slot two 2-4 of knife rest 1, the both sides of locating slot two 2-4 are arranged symmetrically with T-slot two 2-3, in the middle of the bottom of knife rest 1, there is positioning key one 69-1, the both sides of positioning key one 69-1 are arranged symmetrically with T-shaped bolt hole (not shown), positioning key one 69-1 is placed in locating slot two 2-4 on facing head 2 and is used for locating, the T-shaped bolt (not shown) of knife rest 1 is fixed on T-slot two 2-3 of facing head 2, follows facing head 2 and rotates together.
Knife rest 2 72 side is fixed with skewback 83, the bottom of push rod 81 and skewback 83 are on a horizontal plane, the skewback 83 that knife rest 2 72 side is fixed promotes push rod 81 and moves up, push rod 81 pushes connecting rod 80 and rotates, driven gear 15 rotates, tooth bar 77 is driven mobile by gear 15, by tooth bar 77 driven rotary after duplicate gear 76 is connected by bearing 14 location.
This multi-cutter process valve numerical control double-slider unit head principal cutting movement and feed mechanism move and are described as follows:
Facing head principal cutting movement: by main shaft alternating-current variable frequency motor 36 by gear 7 31, gear 8 32, gear 5 27, gear 4 24, gear 6 28, gear 3 23, gear 2 21, gear 1, facing head 2 is driven to rotate through axle sleeve 16, main shaft 12, rotating speed is electrodeless variable-speed, is controlled by transducer drive main shaft alternating-current variable frequency motor 36.
Slide block in-movement: enter box of tricks by gear 14, gear 12 warp beam 44 by servomotor 55, rotated by axle 44 driven gear 11, gear 13, now differential body 47 is driven to rotate by axle 48, through gear 9 46, gear shaft 1, axle sleeve 63, mandrel 13, bevel gear 24, bevel gear 1, two ball screws 7 are driven to rotate, a slide block 1 is respectively driven to move through ball wire pole socket 6 again, thus realizing the in-movement of slide block, translational speed is controlled by driver drives servomotor 55.
Ram longitudinal feed mechanism: drive ball screw 41 to rotate by synchronous pulley 2 67, Timing Belt 66, synchronous pulley 1 by servomotor 64, move horizontally through ball wire pole socket 42 side of drive ram 14 again, because square ram 14, facing head 2, slide block 1 are synchronizing moving structure, thus realizing the horizontal feed motion of slide block, translational speed is controlled by driver drives servomotor 64.
These are only the preferred embodiment of the embodiment of the present invention; not in order to limit the embodiment of the present invention; within all spirit in the embodiment of the present invention and principle, any amendment done, equivalent replacement, improvement etc., all should be included in the protection domain of the embodiment of the present invention.
Claims (6)
1. multi-cutter process valve numerical control double-slider unit head, comprise ram seat (11), side's ram (14), main spindle box (18), body (19), servomotor (55), facing head (2), main shaft alternating-current variable frequency motor (36), shift fork oil cylinder (29), described side's ram (14) front end connects facing head (2), ram (14) rear end, side connects main spindle box (18), main spindle box (18) other end connects body (19), body (19) connects servomotor (55), main shaft alternating-current variable frequency motor (36) is connected with by connected body (35) in the upper end of main spindle box (18), the center of main shaft is connected to mandrel (13), facing head (2) is located with main shaft (12) and is connected, shift fork oil cylinder (29) is also connected on main spindle box (18), it is characterized in that: installation two slide blocks (1) symmetrical in the heart in facing head (2), the upper each symmetry of each slide block (1) is fixed a knife rest two (72) and is done symmetric motion and be used for turning end, knife rest two (72) moves along slide block, knife rest two (72) rotates together with facing head (2), facing head (2) is also symmetrically fixed with two knife rests one (69), knife rest one (69) also can be upper mobile at facing head (2), knife rest one (69) is used for turning flange excircle, the line of knife rest two (72) is vertical with the line of knife rest one (69), the feed speed of size and end face to be controlled by servomotor (55) through slowing down, slide block (1) is by wedge (39), pressing plate two (38), pressing plate one (37) is actively connected on facing head (2), slide block (1) is located with ball wire pole socket (6) and is connected, ball wire pole socket (6) is located with ball screw nut and is connected, ball screw (7) bearing one (5) connects with facing head (2), thus band movable slider does transverse movement during ball screw rotation, slide block (1) in-movement is realized the control of driving and movement velocity jointly by body (19) by mandrel (13).
2. multi-cutter process valve numerical control double-slider unit head according to claim 1, it is characterized in that: knife rest two (72) side is fixed with skewback (83), facing head (2) is also connected with push rod (81), fixed block (82), connecting rod (80), push rod (81) is movably connected on facing head, push rod (81) can move up and down, the bottom of push rod (81) and skewback (83) are on a horizontal plane, fixed block (82) is used for fixing push rod (81), knife rest one (69) is connected with gear ten five (79), tooth bar (77), duplicate gear (76), duplicate gear (76) is connected with tooth bar (77), tooth bar (77) is connected with gear ten five (79), gear ten five (79) is connected with connecting rod (80), after knife rest two (72) cutting end face operation completes, side's ram (14) slow astern segment distance, now slide block (1) continues transverse shifting, allow the fixing skewback (83) in knife rest two (72) side promote push rod (81) move up, push rod (81) pushes connecting rod (80) and rotates, driven gear ten five (79) rotates, tooth bar (77) is driven mobile by gear ten five (79), by tooth bar (77) driven rotary after duplicate gear (76) is connected by bearing ten four (78) location.
3. multi-cutter process valve numerical control double-slider unit head according to claim 1, it is characterized in that: (2) have slip recess with facing head, slide block (1) is placed in slip recess, the fit depressions on the length of slide block (1) and width and facing head (2);
The centre of slide block 1 has the locating slot one (2-1) of knife rest two (72), the both sides of locating slot one (2-1) are arranged symmetrically with T-slot one (2-2), in the middle of the bottom of knife rest two (72), there is positioning key two (72-1), the both sides of positioning key two (72-1) are arranged symmetrically with T-shaped bolt hole, positioning key two (72-1) is placed in the locating slot one (2-1) on slide block (1) and is used for locating, knife rest two (72) is bolted in the T-slot one (2-2) of slide block (1) with T-shaped, knife rest two (72) moves together along slide block (1), follow facing head (2) to rotate together,
Facing head (2) has the locating slot two (2-4) of knife rest one (69), the both sides of locating slot two (2-4) are arranged symmetrically with T-slot two (2-3), in the middle of the bottom of knife rest one (69), there is positioning key one (69-1), the both sides of positioning key one (69-1) are arranged symmetrically with T-shaped bolt hole, positioning key one (69-1) is placed in the locating slot two (2-4) on facing head (2) and is used for locating, knife rest one (69) is bolted in the T-slot two (2-3) of facing head (2) with T-shaped, knife rest one (69) moves along T-slot two, follow facing head (2) to rotate together.
4. multi-cutter process valve numerical control double-slider unit head according to claim 1, it is characterized in that: square ram (14) is connected by front and back main shaft bearing two (8) with internal spindle (12), side's ram (14) is fixed with ball wire pole socket (42), ram seat (11) is fixed with ball screw (41) by bearing seven (40), ball wire pole socket (42) connects with ball screw nut, synchronous pulley two (67) is fixed on servomotor (64), servomotor (64) is fixed on casing (68), with Timing Belt (66) by synchronous pulley one (65), synchronous pulley two (67) connects, thus side's of drive ram (14) have moved horizontally the motion of cutter length feed during ball screw (41) rotation, main shaft alternating-current variable frequency motor (36) is fixed by connector (35) and main spindle box (18).
5. multi-cutter process valve numerical control double-slider unit head according to claim 1, it is characterized in that: on main shaft alternating-current variable frequency motor (36) output shaft (30), be provided with high low speed mechanism, the High Rotation Speed of high low speed mechanism is by gear six (28), gear eight (32) forms, low speed rotation is by gear five (27), gear seven (31) forms, gear seven (31) and gear eight (32) are socketed on axle (30), shift fork block (33) is connected with in shift fork oil cylinder (29), high low speed switches by shift fork oil cylinder (29) through shift fork block (33) driven gear seven (31), gear eight (32) has above moved at axle (30), thus realize the high low-speed rotation of facing head.
6. multi-cutter process valve numerical control double-slider unit head according to claim 1, it is characterized in that: also there is in facing head (2) bevel gear two (4), ball screw (7) is socketed with bevel gear one (3), mandrel (13) is connected with facing head (2) by bevel gear two (4), and bevel gear two (4) drives ball screw (7) to rotate and makes slide block (1) in-movement.
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