CN102500788A - Multi-shaft drilling machine with adjustable main shaft - Google Patents
Multi-shaft drilling machine with adjustable main shaft Download PDFInfo
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- CN102500788A CN102500788A CN2011103567797A CN201110356779A CN102500788A CN 102500788 A CN102500788 A CN 102500788A CN 2011103567797 A CN2011103567797 A CN 2011103567797A CN 201110356779 A CN201110356779 A CN 201110356779A CN 102500788 A CN102500788 A CN 102500788A
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Abstract
The invention provides a multi-shaft drilling machine with an adjustable main shaft, which belongs to the technical field of machinery and solves the problem of low accuracy in position adjustment of the main shaft of the conventional multi-shaft drilling machine with the adjustable main shaft. The multi-shaft drilling machine with the adjustable main shaft comprises a stand, a multiple-shaft device, a guide column and a tool positioning plate, wherein the multi-shaft device is arranged on the stand; the guide column is positioned on the lateral part of the stand; the tool positioning plate is connected with the guide column and can slide axially along the guide column; the stand is provided with a rotary disc which can rotate relative to the stand; the main shaft of the multi-shaft device can pass through the rotary disc; the rotary disc is provided with an adjusting mechanism and a transposition mechanism; the adjusting mechanism can be used for driving the main shaft to do radial motion along the rotary disc by turning the rotary disc; the transposition mechanism is used for driving the rotary disc to rotate; and the stand is also provided with a driving mechanism for driving a tool positioning plate to lift. The radial position of the main shaft of the multi-shaft drilling machine relative to the rotary disc can be adjusted by turning the rotary disc, a plurality of groups of holes with different radial positions can be conveniently processed, and the processing efficiency is increased.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of multi-spindle drilling lathe, the multi-spindle drilling lathe that particularly a kind of main shaft is adjustable.
Background technology
Multi-shaft device is a kind of device that can process two above unthreaded holes or screwed hole simultaneously, and it comprises the main shaft of a plurality of interlocks, and the cutter of boring or tapping can be installed on the main shaft.The multi-spindle drilling lathe is fixed on multi-shaft device on the frame, can realize the processing in a plurality of holes, and is easy to process.The position of multi-shaft device main shaft confirms according to the position in the hole that is processed usually, and multi-shaft device main shaft and frame are fixed in process.Therefore, after the position in the hole that is processed changes, need adjust accordingly the position of multi-shaft device main shaft, troublesome poeration has reduced production efficiency.For example, when processing the hole that circumferentially distributes on the motor mounting disc end face, clamping of multi-spindle drilling lathe is processed the different installing holes of many group radial positions possibly, and the position of multi-shaft device main shaft need regulated along electric machine casing in the radial direction.
The technical staff realizes the position adjustments of multi-shaft device main shaft through between frame and multi-shaft device main shaft, the driving mechanism that can drive the multi-shaft device motion of main shaft being set.For example, Chinese patent [application number 200810210204.2; Publication number C N101372045A] a kind of multi-shaft device of synchronous adjustable disclosed, the multi-shaft device of this synchronous adjustable by the multi-shaft device housing, regulate tube, drilling rod, locking nut, travelling gear, synchronous regulation mechanism etc. and form.Multi-shaft device has a plurality of adjusting tubes, regulates in the tube transition gear is housed, transition gear one side and driving gear engagement; Another side drives the drilling rod gear and makes the drilling rod rotation; Axle one end of transition gear is fixed in the multi-shaft device housing, and the other end is furnished with locking nut, and locking nut makes the adjusting tube fixing; Unclamp the rotatable adjusting tube of locking nut, make drilling rod be in desired location.For the required pitch-row of adjusted in concert, between a plurality of adjusting tubes and the adjusting tube interlinked mechanism is arranged, when regulating the boring pitch-row, a plurality of adjusting tubes rotate synchronously, make the drilling rod distance by circumference uniform distribution.
The adjusting that can realize the drilling rod position of the multi-shaft device of above-mentioned synchronous adjustable, still, the problem that the multi-shaft device of this synchronous adjustable exists is, rotates and drive the drilling rod circumferential movement through a plurality of adjusting tubes synchronously by interlinked mechanism, structure is comparatively complicated; Link gear adopts gear driven to regulate tube, and the positioning accuracy of drilling rod is not high.
Summary of the invention
The objective of the invention is to have the problems referred to above to existing technology, proposed the adjustable multi-spindle drilling lathe of a kind of main shaft, the technical problem that the present invention solves is to improve the accuracy that the multi-shaft device main spindle's is regulated.
The object of the invention can be realized through following technical proposal: the multi-spindle drilling lathe that a kind of main shaft is adjustable; Comprise frame, be arranged on multi-shaft device on the frame, be positioned at the guide pillar of frame sidepiece and link with guide pillar and can be along guide pillar tool locating plate in axial sliding; It is characterized in that; Described frame is provided with can be with respect to the rotating disc of frame rotation; The main shaft of described multi-shaft device can pass above-mentioned rotating disc; Described rotating disc is provided with and can drives the governor motion and the indexing mechanism that be used for driven rotary dish rotation of main shaft along the rotating disc radial motion through rotating rotating disc, also is provided with on the described frame to be used to drive the driving mechanism that the tool locating plate goes up and down.
The main shaft of the multi-spindle drilling lathe that this main shaft is adjustable can be with respect to tool locating plate motion, is used in the different many groups hole of processing radial position under the condition of a clamping.The operation principle of the multi-spindle drilling lathe that this main shaft is adjustable is: before the processing, workpiece to be processed is fixed on the tool locating plate through frock; Handle indexing mechanism driven rotary dish and rotate, be positioned at governor motion on the rotating disc drive main shaft along the rotating disc radial motion and with the position in hole to be processed over against; Start multi-shaft device, main shaft is rotated, and make workpiece along the major axes orientation feeding, accomplish the processing in one group of hole through driving mechanism drive tool locating plate; After machining, the tool locating strip part of starting building resets, and changes the position of main shaft through indexing mechanism, can realize the different holes of clamping processing many groups radial positions No. one time.This lathe simple in structure, machining accuracy is higher.
In the adjustable multi-spindle drilling lathe of above-mentioned main shaft; Described governor motion comprises that several are positioned at the circular arc pilot hole that is the distribution of whirlpool shape on the rotating disc; All have a step surface on the inwall of described pilot hole, have the location convex shoulder that can be resisted against on the above-mentioned step surface on the described main shaft.Rotating disc rotate to drive main shaft and moves along the pilot hole of circular arc, makes the main shaft can be along the radial motion of rotating disc.
In the adjustable multi-spindle drilling lathe of above-mentioned main shaft, the quantity of described pilot hole is 3～4.The quantity of pilot hole is consistent with the quantity of the main shaft of multi-shaft device.
In the adjustable multi-spindle drilling lathe of above-mentioned main shaft; Be provided with an end between described rotating disc and the frame and be processed with externally threaded locating shaft; The other end of described locating shaft has boss; Be provided with the through hole that supplies above-mentioned locating shaft to pass on described rotating disc and the frame, an end of described locating shaft is connected with frame through screw mutually, and the other end is through nut and the locking of described rotating disc.The purpose that is provided with like this is: make the circumferential location of rotating disc and frame reliable, after rotating disc rotated repeatedly, the situation that can not occur becoming flexible improved the accuracy of main shaft radial position adjustment.
In the adjustable multi-spindle drilling lathe of above-mentioned main shaft, circumferentially be distributed with several on the end face of described rotating disc and be circular-arc via hole, screw can pass above-mentioned via hole screw-in and be positioned at the installing hole on the frame.When rotating disc rotated, screw can slide with respect to via hole; Rotating disc is played auxiliary spacing effect.
In the adjustable multi-spindle drilling lathe of above-mentioned main shaft, described governor motion comprises the gear that is connected on the rotating disc and is connected in the tooth bar on the main shaft also have the opening of stepping down that several supply main shafts to pass on the described rotating disc.The number of openings of stepping down is corresponding with the quantity of main shaft, can drive main shaft radially sliding along rotating disc through rack-and-pinion.
In the adjustable multi-spindle drilling lathe of above-mentioned main shaft, described indexing mechanism comprises handle and the scale that is connected in the rotating disc sidepiece, is fixed with pointer on the described frame, the scale place of above-mentioned pointed scale.Operating personnel rotate through handle driven rotary dish, and the pointer on the frame can be indicated the position at main shaft place simultaneously.
In the adjustable multi-spindle drilling lathe of above-mentioned main shaft; Described indexing mechanism comprises the stepper motor, the gear one that is connected in the rotating disc center that are arranged on the frame, be connected in the gear two on the stepper motor main shaft and be used for the gauge tap of control step motor, and described gear one is meshed with gear two.Realize the rotation of rotating disc through stepper motor, and control by gauge tap.
In the adjustable multi-spindle drilling lathe of above-mentioned main shaft, described gauge tap is a knob switch, and the base of described rotary switch is marked with scale value.Scale value is corresponding with the distance that main shaft moves radially.
In the adjustable multi-spindle drilling lathe of above-mentioned main shaft, described driving mechanism comprises the oil cylinder one that is fixed on the frame, and the piston rod of described oil cylinder one and tool locating plate are connected.Piston rod through oil cylinder one drives tool locating bar completion feed motion.
In the adjustable multi-spindle drilling lathe of above-mentioned main shaft; Be provided with lifter slide between described guide pillar and the tool locating plate; Described lifter slide links to each other with guide pillar through sliding sleeve; Described tool locating plate is fixed on the above-mentioned lifter slide through screw, and the piston rod of described oil cylinder one is connected in the bottom of lifter slide through Connection Block.Make the feeding of workpiece more steady, accurate.
In the adjustable multi-spindle drilling lathe of above-mentioned main shaft; Described driving mechanism comprises the drive motors that is fixed on the frame; Be fixed with screw mandrel on the main shaft of described drive motors, be fixed with screw on the described tool locating plate, described screw mandrel and screw match.Driving mechanism simple in structure, the feeding of workpiece is steady.
In the adjustable multi-spindle drilling lathe of above-mentioned main shaft; Be provided with bushing plate between described main shaft and the tool locating plate; Be provided with the drill jig location-plate between described bushing plate and the guide pillar, described drill jig location-plate links to each other through sliding sleeve with guide pillar, and described bushing plate is fixed on the drill jig location-plate through screw; Be fixed with oil cylinder two on the described frame, the piston rod of described oil cylinder two is connected mutually and can drives bushing plate with bushing plate and endwisely slips along guide pillar.Bushing plate is used for drill bit is led, and makes the positional precision in the hole that processes higher, and bushing plate can be convenient to the clamping of workpiece with respect to the up-down of tool locating plate.
In the adjustable multi-spindle drilling lathe of above-mentioned main shaft, have on the described drill jig location-plate and described hole site and the shape resigning hole one to one of crossing, also have the bar hole that the confession main shaft passes on the described drill jig location-plate.Avoid main shaft and screw and drill jig location-plate to interfere.
Compared with prior art, the advantage of the adjustable multi-spindle drilling lathe of this main shaft is:
1, the main shaft of this multi-spindle drilling lathe can be regulated through rotating rotating disc with respect to the radial position of rotating disc, is convenient to process the different hole of many group radial positions, has improved working (machining) efficiency.
2, the tool locating plate of the adjustable multi-spindle drilling lathe of this main shaft links to each other with guide pillar through lifter slide, and completion feed motion under the drive of the piston rod of oil cylinder one, and the feeding of workpiece is steady.
3, the adjustable multi-spindle drilling lathe of this main shaft is provided with liftable bushing plate, has improved the quality in the hole that processes, simultaneously the convenient mounting and clamping of workpiece.
Description of drawings
Fig. 1 is the assembly structure sketch map of the adjustable multi-spindle drilling lathe of this main shaft.
Fig. 2 is the structural representation of rotating disc among the embodiment one.
Fig. 3 is the structural representation of rotating disc among the embodiment two.
Fig. 4 is the structural representation of drill jig location-plate among the embodiment one.
Fig. 5 is the structural representation of drill jig location-plate among the embodiment two.
Fig. 6 is the assembly structure sketch map of rotating disc and handle.
Among the figure, 1, frame; 2, multi-shaft device; 21, main shaft; 3, guide pillar; 4, rotating disc; 41, pilot hole; 42, via hole; 5, tool locating plate; 6, lifter slide; 7, bushing plate; 8, drill jig location-plate; 81, bar hole; 82, resigning hole; 9, oil cylinder one; 10, oil cylinder two; 11, locating shaft; 12, nut; 13, sliding sleeve; 14, Connection Block; 15, handle; 16, protective plate.
The specific embodiment
Below be specific embodiment of the present invention and combine accompanying drawing, technical scheme of the present invention is done further to describe, but the present invention is not limited to these embodiment.
Embodiment one:
The multi-spindle drilling lathe that this main shaft is adjustable is used to process the different hole of many group radial positions.The multi-spindle drilling lathe that this main shaft is adjustable comprises frame 1, multi-shaft device 2, guide pillar 3, rotating disc 4, tool locating plate 5, governor motion, indexing mechanism and driving mechanism.
Specifically, as shown in Figure 1, multi-shaft device 2 is fixed on the frame 1, and three main shafts 21 of multi-shaft device 2 pass frame 1 and rotating disc 4 respectively.As shown in Figure 2, rotating disc 4 all offers through hole with frame 1 corresponding center position, is equipped with a locating shaft 11 in the through hole, and an end of locating shaft 11 has boss, and the other end is processed with external screw thread.Locating shaft 11 is fixed on the frame 1 through the screw that passes raised head face, and nut 12 and rotating disc 4 lockings through being screwed in the external screw thread place, and rotating disc 4 can rotate with respect to frame 1 around locating shaft 11.Circumferentially be distributed with three on the end face of rotating disc 4 and be circular-arc via hole 42, screw can pass via hole 42 screw-ins and be positioned at the installing hole on the frame 1, and when rotating disc 4 rotated, screw can slide with respect to via hole 42.
As depicted in figs. 1 and 2; In the present embodiment, governor motion comprises that three are positioned at the circular arc pilot hole 41 that is the distribution of whirlpool shape on the rotating disc 4, all process a step surface on the inwall of each pilot hole 41; This step surface matches with location convex shoulder on the main shaft 21; Main shaft 21 is assembled to 4 last times of rotating disc, and the location convex shoulder is resisted against on the step surface, plays spacing and supporting role to main shaft 21.Rotating disc 4 rotates and drives main shafts 21 and move along the pilot hole 41 of circular arc, makes the main shaft 21 can be along the radial motion of rotating disc 4.
Like Fig. 1 and shown in Figure 6; Indexing mechanism is used for driven rotary dish 4 and rotates, and indexing mechanism comprises handle 15 and scale, and handle 15 is connected in rotating disc 4 sidepieces and can rotates by driven rotary dish 4; The end of handle 15 makes the better effects if of putting forth effort of handle 15 through the grip part that has been threaded.The corresponding main shaft 21 of the scale of scale is fixed with pointer with respect to the distance of rotating disc 4 centers on the frame 1, the scale place of pointed scale and the position of indicating main shaft 21 to belong to.
As shown in Figure 1, be provided with lifter slide 6 between guide pillar 3 and the tool locating plate 5, lifter slide 6 links to each other with guide pillar 3 through sliding sleeve 13 and can slide along guide pillar 3, and tool locating plate 5 is fixed on the lifter slide 6 through screw.Driving mechanism comprises the oil cylinder 1 that is fixed on the frame 1, and the piston rod of oil cylinder 1 is connected on the lifter slide 6 through Connection Block 14, is used for realizing the feed motion of workpiece in boring processing.
As shown in Figure 1; Be provided with bushing plate 7 between main shaft 21 and the tool locating plate 5; Be provided with drill jig location-plate 8 between bushing plate 7 and the guide pillar 3, drill jig location-plate 8 links to each other through sliding sleeve 13 with guide pillar 3, and bushing plate 7 is fixed on the drill jig location-plate 8 through screw; Be fixed with oil cylinder 10 on the frame 1, the piston rod of oil cylinder 10 is connected mutually and can drives bushing plate 7 with bushing plate 7 and endwisely slips along guide pillar 3.As shown in Figure 4; Have on the drill jig location-plate 8 and via hole 42 positions and shape resigning hole 82 one to one; Also have the bar hole 81 that supplies main shaft 21 to pass on the drill jig location-plate 8, avoid main shaft 21 and the screw and the drill jig location-plate 8 that are positioned on the rotating disc 4 to interfere.Bushing plate 7 is used for drill bit is led, and makes the positional precision in the hole that processes higher, and bushing plate 7 can be convenient to the clamping of workpiece with respect to 5 up-downs of tool locating plate.
The operation principle of the multi-spindle drilling lathe that this main shaft is adjustable: before the processing, through oil cylinder
10 drive bushing plate 7 rises, and workpiece to be processed is fixed on the tool locating plate 5 position of adjustment bushing plate 7 through frock; Rotate through handle 15 driven rotary dishes 4, the main shaft 21 of multi-shaft device 2 slides along the pilot hole 41 of rotating disc 4, make main shaft 21 can with respect to rotating disc 4 move radially with hole to be processed over against the position; Start multi-shaft device 2, main shaft 21 is rotated, and make workpiece along main shaft 21 direction feedings through oil cylinder 10 drive tool locating plates 5; After processing one group of hole, tool locating plate 5 resets, and after the radial position of rotating rotating disc 4 adjustment main shafts 21, repeats above-mentioned steps, can be embodied as the processing in the different hole of many groups radial position.
Embodiment two:
Technical scheme among technical scheme in the present embodiment and the embodiment one is basic identical, and difference is that difference is; Like Fig. 3 and shown in Figure 5; In the present embodiment, the quantity of the main shaft 21 of multi-shaft device 2 is four, and the quantity of corresponding pilot hole 41 and bar hole 81 is four.
Embodiment three:
Technical scheme among technical scheme in the present embodiment and embodiment one or the embodiment two is basic identical; Difference is; In the present embodiment; Indexing mechanism comprises the stepper motor, the gear one that is connected in rotating disc 4 centers that are arranged on the frame 1, be connected in the gear two on the stepper motor main shaft 21 and be used for the gauge tap of control step motor, and gear one is meshed with gear two.Gauge tap is a knob switch, and the base of rotary switch is marked with scale value.Scale value is corresponding with the distance that main shaft 21 moves radially, and realizes the control that rotating disc 4 rotates through stepper motor and gauge tap.
Embodiment four:
Technical scheme among technical scheme in the present embodiment and embodiment one, embodiment two or the embodiment three is basic identical; Difference is; In the present embodiment, driving mechanism comprises the drive motors that is fixed on the frame 1, is fixed with screw mandrel on the main shaft 21 of drive motors; Be fixed with screw on the tool locating plate 5, screw mandrel and screw match.Drive motors drives screw mandrel and rotates, and screw can drive tool locating plate 5 and go up and down, and simple in structure, the feeding of workpiece is more steady.
Embodiment five:
Technical scheme among technical scheme in the present embodiment and embodiment one, embodiment two, embodiment three or the embodiment four is basic identical; In the present embodiment; Governor motion comprises the gear that is connected on the rotating disc 4 and is connected in the tooth bar on the main shaft 21 also have the opening of stepping down that supplies main shaft 21 to pass on the rotating disc 4.The number of openings of stepping down is identical with the quantity of main shaft 21, and rotating disc 4 driven gears rotate, and wheel and rack is meshed and drives tooth bar and slides, thereby drives main shaft 21 radially sliding along rotating disc 4.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as frame 1, multi-shaft device 2, main shaft 21, guide pillar 3, rotating disc 4, pilot hole 41, via hole 42, tool locating plate 5, lifter slide 6, bushing plate 7, drill jig location-plate 8, bar hole 81, resigning hole 82, oil cylinder 1, oil cylinder 2 10, locating shaft 11, nut 12, sliding sleeve 13, Connection Block 14, handle 15, protective plate 16 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; It all is contrary with spirit of the present invention being construed to any additional restriction to them.
Claims (10)
1. multi-spindle drilling lathe that main shaft is adjustable; Comprise frame (1), be arranged on multi-shaft device (2) on the frame (1), be positioned at the guide pillar (3) of frame (1) sidepiece and link with guide pillar (3) and can be along guide pillar (3) tool locating plate (5) in axial sliding; It is characterized in that; Described frame (1) is provided with can be with respect to the rotating disc (4) of frame (1) rotation; The main shaft (21) of described multi-shaft device (2) can pass above-mentioned rotating disc (4); Described rotating disc (4) is provided with and can drives the governor motion and the indexing mechanism that be used for driven rotary dish (4) rotation of main shaft (21) along rotating disc (4) radial motion through rotating rotating disc (4), also is provided with on the described frame (1) to be used to drive the driving mechanism that tool locating plate (5) goes up and down.
2. the multi-spindle drilling lathe that main shaft according to claim 1 is adjustable; It is characterized in that; Be provided with an end between described rotating disc (4) and the frame (1) and be processed with externally threaded locating shaft (11); The other end of described locating shaft (11) has boss; Be provided with the through hole that supplies above-mentioned locating shaft (11) to pass on described rotating disc (4) and the frame (1), an end of described locating shaft (11) is connected with frame (1) through screw mutually, and the other end is through nut (12) and described rotating disc (4) locking.
3. the multi-spindle drilling lathe that main shaft according to claim 2 is adjustable; It is characterized in that; Circumferentially be distributed with several on the end face of described rotating disc (4) and be circular-arc via hole (42), screw can pass above-mentioned via hole (42) screw-in and be positioned at the installing hole on the frame (1); Have on the described drill jig location-plate (8) and described via hole (42) position and shape resigning hole (82) one to one, also have the bar hole (81) that confession main shaft (21) passes on the said drill jig location-plate (8).
4. according to claim 1 or the adjustable multi-spindle drilling lathe of 2 or 3 described main shafts; It is characterized in that; Described governor motion comprises that several are positioned at the circular arc pilot hole (41) that is the distribution of whirlpool shape on the rotating disc (4); All have a step surface on the inwall of described pilot hole (41), have the location convex shoulder that can be resisted against on the above-mentioned step surface on the described main shaft (21).
5. according to claim 1 or the adjustable multi-spindle drilling lathe of 2 or 3 described main shafts; It is characterized in that; Described governor motion comprises the gear that is connected on the rotating disc (4) and is connected in the tooth bar on the main shaft (21) also have the opening of stepping down that several supply main shafts (21) to pass on the described rotating disc (4).
6. according to claim 1 or the adjustable multi-spindle drilling lathe of 2 or 3 described main shafts; It is characterized in that; Described indexing mechanism comprises handle (15) and the scale that is connected in rotating disc (4) sidepiece, and described frame is fixed with pointer on (1), the scale place of above-mentioned pointed scale.
7. according to claim 1 or the adjustable multi-spindle drilling lathe of 2 or 3 described main shafts; It is characterized in that; Described indexing mechanism comprises the stepper motor, the gear one that is connected in rotating disc (4) center that are arranged on the frame (1), is connected in gear two and the gauge tap that is used for the control step motor on the stepper motor main shaft (21), and described gear one is meshed with gear two.
8. according to claim 1 or the adjustable multi-spindle drilling lathe of 2 or 3 described main shafts, it is characterized in that described driving mechanism comprises the oil cylinder one (9) that is fixed on the frame (1), the piston rod of described oil cylinder one (9) and tool locating plate (5) are connected.
9. according to claim 1 or the adjustable multi-spindle drilling lathe of 2 or 3 described main shafts; It is characterized in that; Described driving mechanism comprises the drive motors that is fixed on the frame (1); The main shaft of described drive motors is fixed with screw mandrel on (21), is fixed with screw on the described tool locating plate (5), and described screw mandrel and screw match.
10. according to claim 1 or the adjustable multi-spindle drilling lathe of 2 or 3 described main shafts; It is characterized in that; Be provided with bushing plate (7) between described main shaft (21) and the tool locating plate (5); Be provided with drill jig location-plate (8) between described bushing plate (7) and the guide pillar (3), described drill jig location-plate (8) links to each other through sliding sleeve (13) with guide pillar (3), and described bushing plate (7) is fixed on the drill jig location-plate (8) through screw; Be fixed with oil cylinder two (10) on the described frame (1), the piston rod of described oil cylinder two (10) is connected mutually and can drives bushing plate (7) with bushing plate (7) and endwisely slips along guide pillar (3).
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| CN2011103567797A CN102500788A (en) | 2011-11-11 | 2011-11-11 | Multi-shaft drilling machine with adjustable main shaft |
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| CN2011103567797A CN102500788A (en) | 2011-11-11 | 2011-11-11 | Multi-shaft drilling machine with adjustable main shaft |
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Address after: Taizhou City, Zhejiang province 317521 Zeguo town Muyu electromechanical Industrial Park Applicant after: ZHEJIANG XILING CO., LTD. Address before: Taizhou City, Zhejiang province 317521 Zeguo town Muyu electromechanical Industrial Park Applicant before: Zhejiang West Diamond Bench Drill Manufacturer Co., Ltd. |
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Application publication date: 20120620 |