CN102717121B - Deep hole machine tool suitable for tapered deep hole boring - Google Patents
Deep hole machine tool suitable for tapered deep hole boring Download PDFInfo
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- CN102717121B CN102717121B CN201210210091.2A CN201210210091A CN102717121B CN 102717121 B CN102717121 B CN 102717121B CN 201210210091 A CN201210210091 A CN 201210210091A CN 102717121 B CN102717121 B CN 102717121B
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Abstract
The invention belongs to the technical field of a tapered hole processing device, and particularly relates to a deep hole machine tool suitable for tapered deep hole boring, which solves the problem that the conventional deep hole machine tool cannot be suitable for the conditions that holes are too deep and a hole diameter is small. The deep hole machine tool comprises a tool body, a boring rod and a boring cutter, wherein holes are formed in the axial center and the radial direction of the boring rod, and the boring cutter is installed in the radial hole of the boring rod; a double-cone core rod is arranged in the axial hole of the boring rod; two cone bodies are arranged at the front end of the double-cone core rod, and the tapers of the two cones of the two cone bodies are equal; a floating gripper is also installed on the boring rod; and a tapered hole is formed in the boring cutter, and the axis direction of the tapered hole is parallel to that of the boring rod. The deep hole machine tool has the beneficial effects that the demand on the deep hole machine tool processing tapered deep holes is realized, the defect that the boring rod is easy to deform during the tapered deep-hole processing is overcome, and the processing precision is increased.
Description
Technical field
The technical field that the invention belongs to processing bellmouth device, is specifically related to a kind of deep hole lathe that is applicable to taper deep hole boring.
Background technology
Boring cylindrical hole has ripe technology, and boring taper shallow bore hole is also easily realized.The taper hole that boring is very dark, its difficulty is the first, and the boring cutter bar amount of overhanging is large, and boring cutter bar is easily out of shape, and is not easy to guarantee crudy.The second, in shallow bore hole processing, boring cutter radial feed is easily realized, and during the very dark taper hole of boring, mode radial feed when boring cutter is difficult to according to boring shallow bore hole.The 3rd, be difficult to directly adopt the Deep-Hole Drilling Technologies such as drill gun, BTA brill, DF brill to complete the boring of taper deep hole.Eighties of last century, the mankind have captured the technical barrier of machining medium-length hole processing, formed the modern Deep-Hole Drilling Technology of science, but this technology is mainly applicable to the processing of cylinder deep hole, its main feature is to adopt from leading sizing cylindrical cutting tool, and conical bore diameter is variable, the processing of directly applying mechanically Deep-Hole Drilling Technology solution taper deep hole acquires a certain degree of difficulty.
Although when design, people avoid circular cone deep-hole structures, in some cases, are difficult to avoid completely circular cone deep-hole structures as far as possible.Such as, casting or during injection moulding, even cylindrical work sometimes often also will design pattern draft, this just makes the mould can be with taper hole, and when part is longer, just makes mould have taper deep hole.In real work, people have explored the certain methods of processing taper deep hole, but these methods often have limitation, and such as adapting to the larger situation in aperture, or can only adapt to hole is not too dark situation.
Summary of the invention
Goal of the invention of the present invention: can not adapt to Kong Taishen in order to solve existing deep hole lathe, the processing situation that aperture is little, provides a kind of principle simple, wide adaptability, can be combined with modern cnc technology, can accurately control a kind of deep hole lathe that is applicable to taper deep hole boring in taper hole aperture.
The present invention is achieved by the following technical solutions:
A kind of deep hole lathe that is applicable to taper deep hole boring, comprise lathe bed, main shaft, main spindle box, scroll chuck, centre frame, revolving meber, oil delivering unit support, oil delivering unit seat, slide carriage and boring bar and boring cutter, oil delivering unit support is fixed on bed ways according to the length of workpiece, oil delivering unit seat is connected on oil delivering unit support, the rear end of revolving meber is arranged on oil delivering unit seat by bearing, the front end of revolving meber contacts with workpiece rear end face, the axial centre of described boring bar and radially all perforates, boring cutter is installed in the radial hole of boring bar, in the axial hole of boring bar, be provided with Double-conical-surface core bar, the front end of Double-conical-surface core bar arranges two conical surface bodies, the tapering of two conical surface equates, float support is also installed on boring bar, float support comprises support bar, swivel nut and spring, swivel nut is fixed on boring bar, support bar is through the hole at swivel nut center, support bar bottom is with annular protrusion, between annular protrusion and swivel nut, spring is installed, on support bar, be processed with keyway, in keyway, card has stop pin, on boring cutter, have taper hole, the axis direction of taper hole is parallel to boring bar axis direction, on swivel nut upper surface, being processed with two can insert nipper plier and swivel nut is screwed into the complementary connecting hole of boring bar, on the position contacting with boring bar in swivel nut bottom surface and on swivel nut centre bore hole wall, be all processed with annular groove, in the annular groove of swivel nut bottom surface and in the annular groove of swivel nut centre bore hole wall, place respectively blind nut seal and float support seal
The inner cone of described Double-conical-surface core bar is through the taper hole of offering on boring cutter, one side contacts of the inner cone of Double-conical-surface core bar and taper hole, opposite side is separated, one end in contact of the rear cone of Double-conical-surface core bar and support bar, the gradient of this end face of support bar is consistent with the rear cone of Double-conical-surface core bar, other one end of support bar contacts with the bore area of workpiece boring, the gradient of this end face of support bar is consistent with the hole taper of workpiece, float support is provided with two, one of them float support axis is parallel with boring cutter axis, and with respect to boring bar axis, be positioned at the offside of boring cutter point of a knife, another one float support axis is vertical with boring cutter axis antarafacial, and be positioned at the below of boring cutter,
In the axial hole of boring bar, be also provided with cylinder core bar and screw thread spline core bar, Double-conical-surface core bar and cylinder core bar, screw thread spline core bar is coaxial, the rear end of Double-conical-surface core bar is porose, hole and cylinder core bar front end minor diameter position match, there is a pin to be horizontally through both matching parts, the rear end of cylinder core bar is porose, match with screw thread spline core bar front end smaller diameter end in hole, there is a pin to be horizontally through both matching parts, on screw thread spline core bar, threaded portion matches with the screw thread in stomidium after boring bar, splined section on screw thread spline core bar matches with spline housing, splined section and contiguous position thereof are provided with spatially and staggered many vertical graduation marks of core bar axis, spline housing is connected with servomotor by shaft coupling, servomotor is connected with servo motor control device, servo motor control device is connected with impulse generator, impulse generator is also connected with feed control device, feed control device is connected with deep hole machine tool feed motor,
Two symmetrical long spiro nails are installed on boring cutter, and two long spiro nails pass the gathering sill of offering on boring bar, by extension spring, are connected with the short screw being fixed on boring bar, and gathering sill is greater than the diameter of long spiro nail along the length of boring cutter axis direction,
On boring bar, also perforate is provided with industrial endoscope,
The rear end of boring bar passes oil delivering unit seat and is fixedly connected with slide carriage, on the wall of oil delivering unit seat, be provided with two radial direction through hole, on oil delivering unit seat wall, be also provided with axially extending bore, axially extending bore one end communicates with the radial direction through hole near revolving meber one end, the axially extending bore other end communicates with the cannelure on revolving meber, the inner space of the inner space of oil delivering unit seat, the inner space of revolving meber and workpiece is connected, the scroll chuck of fixation workpiece front end is outside equipped with scroll chuck cover, and scroll chuck cover bottom arranges chip removal mouth.
Both sides at boring cutter bellmouth are processed with respectively cannelure, place seal in groove.
One end of boring bar is provided with boring bar end cap, and boring bar end cap end face is offered cannelure, places seal in cannelure.
On boring bar, transparent sealing lid is installed at the position of corresponding industrial endoscope camera lens.
At cylinder core bar cylindrical and boring bar endoporus contact position, O-ring seals is installed.
Beneficial effect of the present invention:
The first, utilize the conical surface to control cutter radial motion, met the needs of deep hole machine tooling taper deep hole.
The second, two float supports are set, share respectively radial cutting force and cutting force, overcome in deep taper hole process, boring bar holds yielding shortcoming.
The 3rd, be provided with Double-conical-surface core bar, the tapering of two conical surfaces is identical, makes the radial motion of cutter and the radial motion of float support consistent, and float support can be played a role all the time in process.Due to float support one end and finished Surface Contact, can play to a certain extent the benchmark of doing for oneself, self guided effect, be conducive to improve machining accuracy.
The 4th, utilize servomotor and control device thereof, use spline housing 23 and thread mechanism to control the radial motion of cutter simultaneously, technical scheme is simple, accurate, reliable, can meet the needs of processing high-quality taper deep hole.Be equipped with many graduation marks, can further grasp, check taper hole diameter, prevent the generation of process quality issue.
The 5th, industrial endoscope is convenient to observe process, once pinpoint the problems, can process in time, avoids being difficult to observe in common deep hole machining process the drawback of cutting situation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention,
Fig. 2 be A-A to structural representation,
Fig. 3 is Double-conical-surface core bar structure schematic diagram,
Fig. 4 is cylinder core bar structural representation,
Fig. 5 is screw thread spline core bar structural representation,
Fig. 6 is boring bar schematic diagram,
Fig. 7 be boring bar C-C to structural representation,
In figure: 1-lathe bed, 2-bellmouth workpiece, 3-scroll chuck, 4-main spindle box, 5-main shaft, 6-boring bar end cap, 7-boring bar, 8-boring bar end cap seal, 9-Double-conical-surface core bar, 10-boring cutter, 11-boring cutter seal, 12-swivel nut, 13-stop pin, 14-support bar, 15-float support seal, 16-spring, 17-blind nut seal, 18-Work piece sealing part, 19-sealing ring, 20-bearing, 21-Y shape seal, 22-O shape seal, 23-spline housing, 24-shaft coupling, 25-servomotor, 26-slide carriage, 27-screw thread spline core bar, 28-cylinder core bar, 29-oil delivering unit seat, 30-oil delivering unit support, 31-servo motor control device, 32-revolving meber, 33-centre frame, 34-industrial endoscope, 35-transparent sealing lid, 36-impulse generator, 37-scroll chuck cover, 38-short screw, 39-long spiro nail, 40-extension spring, 41-feeding motor control assembly, 42-feeding motor.
The specific embodiment
Traditional deep hole lathe itself has the function of bore hole, and the present invention changes a social system deep hole lathe, can complete taper deep hole boring.The part of the transformation of the way comprises the parts such as boring bar 7, boring cutter 10, Double-conical-surface core bar 9, cylinder core bar 28, screw thread spline core bar 27.Scroll chuck 3 on the main spindle box 4 of deep hole lathe, clamps the workpiece with taper deep hole 2, and centre frame 33 is by the other end of holding workpiece.
Oil delivering unit support 30 is fixed in a certain position of lathe bed 1 guide rail according to the length of workpiece, be fixed with oil delivering unit seat 29 on oil delivering unit support 30, and one end of revolving meber 32 is arranged on oil delivering unit seat 29 by bearing, and the other end contacts with workpiece end face.
One end of boring bar 7 is fixedly connected with slide carriage 26, and boring bar 7 is made axial feed with slide carriage 26 along the movement of bed ways, and servomotor 25 and the shaft coupling 24 being attached thereto, spline housing 23 also move thereupon.The power resources of slide carriage motion are main motor.
On the wall of oil delivering unit seat 29, process two radial direction through hole, from macropore, enter fluid, fluid, the inner space of revolving meber 32 flows to boring cutter place, washes away iron filings by the inner space of oil delivering unit seat 29, cooling, lubricated working position.Iron filings, fluid are from other one section of outflow of workpiece.At scroll chuck place, be provided with scroll chuck cover 37, the in the situation that of the artificial shutoff in advance of spindle hole quilt, iron filings, fluid are under the effect of centrifugal force, from the space between claw, be thrown in scroll chuck cover, prevent that fluid from throwing away, produce and pollute, the bottom of scroll chuck cover is provided with chip removal mouth, adopt prior art in time by iron filings cleaning, prevent iron filings accumulation.
Little radial direction through hole from oil delivering unit seat 29 walls enters other high-voltage oil liquid, and the axial hole pushing revolving meber 32 by oil delivering unit seat 29 walls, prevents its axial play.
The boring cutter 10 that can move with respect to boring bar is installed in the transverse holes of boring bar 7, in the axial hole at boring bar center, is placed with Double-conical-surface core bar 9, cylinder core bar 28, screw thread spline core bar 27, swivel nut 12, spring 16 are installed on boring bar, float support.
The rear portion conical surface of Double-conical-surface core bar 9 and an end in contact of float support, other one end of float support contacts with workpiece 2, and float support, through the hole of being fixed on swivel nut 12 middle parts of boring bar, can move with respect to swivel nut.Float support one end is with annular protrusion, and between annular protrusion and swivel nut, mounting spring 16, and spring 16 contacts one end of float support all the time with the conical surface of Double-conical-surface core bar 9, when 9 axially-movable of Double-conical-surface core bar, make float support radial motion.When the hole of institute's boring diminishes, because 9 two conical degree of conical surfaces of Double-conical-surface core bar are identical, float support inwardly moves, and adapts with processed hole.The existence of float support, has played the effect of supplemental support, can reduce the distortion of boring bar, and this is very dark for hole, and cone hole machine when boring bar is longer acts on very large.
The two ends band of float support is gradient, and with one end that Double-conical-surface core bar 9 contacts, gradient is consistent with the core bar conical surface, the one end contacting with workpiece, and gradient is consistent with workpiece tapering.
On float support, be processed with keyway, dismountable stop pin 13 snaps in keyway; Prevent that float support is around self axis revolution.Float support has two, one of them float support axis is parallel with boring cutter axis or approach level, and with respect to boring bar axis, be positioned at the offside of boring cutter point of a knife, radial cutting force is born in help, another one float support axis and boring cutter axial space are staggered, and vertical or approaching vertical, are positioned at boring cutter below, cutting force is born in help, reduces the distortion of boring bar.
Double-conical-surface core bar 9 and cylinder core bar 28, screw thread spline core bar 27 is coaxial, the right-hand member of Double-conical-surface core bar 9 is porose, hole and cylinder core bar 28 left end minor diameter positions match, there is a pin to be horizontally through both matching parts, the right-hand member of cylinder core bar 28 is porose, match with screw thread spline core bar 27 left end smaller diameter end in hole, there is a pin to be horizontally through both matching parts, on screw thread spline core bar 27, threaded portion matches with the screw thread in boring bar right-hand member hole, splined section on screw thread spline core bar 27 matches with spline housing 23, splined section and contiguous position thereof have spatially and staggered many vertical graduation marks of core bar axis, spline housing is connected with servomotor 25 by shaft coupling 24.Many graduation marks can help to understand and check screw thread spline core bar 27 to move axially distance, help thus to understand and check the boring cutter radial motion distance being attached thereto, and help to understand and check taper hole aperture.
Two conical degree of conical surfaces of Double-conical-surface core bar 9 equate.
System many places arrange seal, to prevent oil liquid leakage.On swivel nut another one end face and swivel nut centre bore hole wall, be processed with cannelure, in groove, place respectively blind nut seal 17, float support seal 15, prevent oil liquid leakage.Both sides at boring cutter 10 bellmouths are processed with respectively cannelure, place seal 11, Leakage prevention in groove.One end of boring bar 7 is provided with boring bar end cap 6, and boring bar end cap 6 end faces are offered cannelure, places seal 8 in groove.Prevent draining.At cylinder core bar 28 cylindricals and boring bar 7 endoporus contact positions, O-ring seals is installed.
Servomotor 25 is connected with impulse generator 36 by servo motor control device 31, impulse generator 36 is connected with feeding motor 42 by feeding motor control assembly 41, the motion of feeding motor 42 is coordinated mutually with the motion of servomotor 25, guaranteed that the tapering processing meets the requirements.In bore hole process, the rotation of workpiece is by main shaft drives, and main shaft is driven by motor independently.Main shaft and drive motors thereof are not controlled the motion of cutter.The motion of cutter is jointly controlled by servomotor and feeding motor.Feeding Electric Machine Control cutter moves along axis of workpiece direction, and servomotor is controlled cutter along workpiece moving radially.
Claims (5)
1. a deep hole lathe that is applicable to taper deep hole boring, comprise lathe bed (1), main shaft (5), main spindle box (4), scroll chuck (3), centre frame (33), revolving meber (32), oil delivering unit support (30), oil delivering unit seat (29), slide carriage (26) and boring bar (7) and boring cutter (10), oil delivering unit support (30) is fixed on lathe bed (1) guide rail according to the length of workpiece, oil delivering unit seat (29) is connected on oil delivering unit support (30), the rear end of revolving meber (32) is arranged on oil delivering unit seat (29) by bearing, the front end of revolving meber (32) contacts with workpiece rear end face, it is characterized in that the axial centre of boring bar (7) and radially all perforates, boring cutter (10) is installed in the radial hole of boring bar (7), in the axial hole of boring bar (7), be provided with Double-conical-surface core bar (9), the front end of Double-conical-surface core bar (9) arranges two conical surface bodies, the tapering of two conical surface equates, boring bar is also provided with float support on (7), float support comprises support bar (14), swivel nut (12) and spring (16), swivel nut (12) is fixed on boring bar (7), support bar (14) is through the hole at swivel nut (12) center, support bar (14) bottom is with annular protrusion, spring (16) is installed between annular protrusion and swivel nut (12), support bar is processed with keyway on (14), in keyway, card has stop pin (13), boring cutter has taper hole on (10), the axis direction of taper hole is parallel to boring bar (7) axis direction, on swivel nut (12) upper surface, being processed with two can insert nipper plier and swivel nut (12) is screwed into the complementary connecting hole of boring bar (7), on the position contacting with boring bar (7) in swivel nut (12) bottom surface and on swivel nut (12) centre bore hole wall, be all processed with annular groove, in the annular groove of swivel nut (12) bottom surface and in the annular groove of swivel nut (12) centre bore hole wall, place respectively blind nut seal (17) and float support seal (15)
The inner cone of described Double-conical-surface core bar (9) is through the taper hole of offering on boring cutter (10), the inner cone of Double-conical-surface core bar (9) and a side contacts of taper hole, opposite side is separated, one end in contact of the rear cone of Double-conical-surface core bar (9) and support bar (14), the gradient of this end face of support bar (14) is consistent with the rear cone of Double-conical-surface core bar (9), other one end of support bar (14) contacts with workpiece (2) the bore area of boring, the gradient of this end face of support bar (14) is consistent with the hole taper of workpiece, float support is provided with two, one of them float support axis is parallel with boring cutter axis, and with respect to boring bar axis, be positioned at the offside of boring cutter point of a knife, another one float support axis is vertical with boring cutter (10) axis antarafacial, and be positioned at the below of boring cutter (10),
In the axial hole of boring bar (7), be also provided with cylinder core bar (28) and screw thread spline core bar (27), Double-conical-surface core bar (9) and cylinder core bar (28), screw thread spline core bar (27) is coaxial, the rear end of Double-conical-surface core bar (9) is porose, hole and cylinder core bar (28) front end minor diameter position match, there is a pin to be horizontally through both matching parts, the rear end of cylinder core bar (28) is porose, match with screw thread spline core bar (27) front end smaller diameter end in hole, there is a pin to be horizontally through both matching parts, the upper threaded portion of screw thread spline core bar (27) matches with the screw thread in stomidium after boring bar, splined section on screw thread spline core bar (27) matches with spline housing (23), splined section and contiguous position thereof are provided with spatially and staggered many vertical graduation marks of core bar axis, spline housing is connected with servomotor (25) by shaft coupling (24), servomotor (25) is connected with servo motor control device (31), servo motor control device (31) is connected with impulse generator (36), impulse generator (36) is also connected with feeding motor control assembly (41), feeding motor control assembly (41) is connected with feeding motor (42),
Symmetrical two long spiro nails (39) are installed on boring cutter (10), two long spiro nails (39) pass the gathering sill of offering on boring bar (7), by extension spring (40), be connected with the short screw (38) being fixed on boring bar (7), gathering sill is greater than the diameter of long spiro nail along the length of boring cutter axis direction
The upper also perforate of boring bar (7) is provided with industrial endoscope (34),
The rear end of boring bar (7) passes oil delivering unit seat (29) and is fixedly connected with slide carriage (26), on the wall of oil delivering unit seat (29), be provided with two radial direction through hole, on oil delivering unit seat (29) wall, be also provided with axially extending bore, axially extending bore one end communicates with the radial direction through hole near revolving meber (32) one end, the axially extending bore other end communicates with the cannelure on revolving meber (32), the inner space of oil delivering unit seat (29), the inner space of revolving meber (32) and the inner space of workpiece are connected, (30 are outside equipped with scroll chuck cover (37) to the scroll chuck of fixation workpiece front end, scroll chuck cover (37) bottom arranges chip removal mouth.
2. the deep hole lathe that is applicable to taper deep hole boring according to claim 1, is characterized in that: the both sides at boring cutter (10) bellmouth are processed with respectively cannelure, places seal (11) in groove.
3. the deep hole lathe that is applicable to taper deep hole boring according to claim 1, is characterized in that: one end of boring bar (7) is provided with boring bar end cap (6), and boring bar end cap (6) end face is offered cannelure, places seal (8) in cannelure.
4. the deep hole lathe that is applicable to taper deep hole boring according to claim 1, is characterized in that: transparent sealing lid (35) is installed at the position at upper corresponding industrial endoscope (34) camera lens of boring bar (7).
5. the deep hole lathe that is applicable to taper deep hole boring according to claim 1, is characterized in that: at cylinder core bar (28) cylindrical and boring bar (7) endoporus contact position, O-ring seals (22) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210210091.2A CN102717121B (en) | 2012-06-25 | 2012-06-25 | Deep hole machine tool suitable for tapered deep hole boring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210210091.2A CN102717121B (en) | 2012-06-25 | 2012-06-25 | Deep hole machine tool suitable for tapered deep hole boring |
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| CN102717121A CN102717121A (en) | 2012-10-10 |
| CN102717121B true CN102717121B (en) | 2014-02-26 |
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|---|---|---|---|---|
| CN105710401B (en) * | 2016-04-28 | 2017-09-22 | 南京理工大学 | A kind of deep and long hole annular trough boring special holder |
| CN110497147A (en) * | 2018-05-16 | 2019-11-26 | 安阳市恒威石化设备有限责任公司 | The disposable processing method of the inner hole of monoblock type bowl |
| CN108453288B (en) * | 2018-05-29 | 2024-05-24 | 山东华宇工学院 | Numerical control taper deep hole machining device and process |
| CN109332755A (en) * | 2018-10-17 | 2019-02-15 | 中北大学 | A kind of the internal screw thread borer and its boring process of reducing |
| CN111496280B (en) * | 2020-05-31 | 2024-05-14 | 西安昂达机电科技有限公司 | Inner reaming boring cutter for processing deep hole |
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| GB701188A (en) * | 1952-01-04 | 1953-12-16 | Samuel Osborn & Company Ltd | Improved reamer or boring bar |
| SU601082A2 (en) * | 1976-11-03 | 1978-04-05 | Специальное Конструкторское Бюро Алмазно-Расточных И Радиально-Сверлильных Станков | Boring mandrel |
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| CN102717121A (en) | 2012-10-10 |
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