CN102717119A - Engine lathe for tapered deep hole boring - Google Patents
Engine lathe for tapered deep hole boring Download PDFInfo
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- CN102717119A CN102717119A CN2012102100946A CN201210210094A CN102717119A CN 102717119 A CN102717119 A CN 102717119A CN 2012102100946 A CN2012102100946 A CN 2012102100946A CN 201210210094 A CN201210210094 A CN 201210210094A CN 102717119 A CN102717119 A CN 102717119A
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Abstract
The invention belongs to the technical field of a tapered hole processing device, and particularly relates to an engine lathe for tapered deep hole boring, which solves the problem that the conventional engine lathe cannot be suitable for the conditions that holes are too deep and a hole diameter is small. The engine lathe comprises a lathe 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 engine lathe has the beneficial effects that the demand on the engine lathe processing the 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 invention belongs to the technical field of processing bellmouth device, be specifically related to a kind of engine lathe that can be used for the taper deep hole boring.
Background technology
The boring cylindrical hole has mature technique, and boring taper shallow bore hole is also realized easily.The taper hole that boring is very dark, its difficulty is the first, and the boring cutter bar amount of overhanging is big, and the boring cutter bar easy deformation is not easy to guarantee crudy.The second, in the shallow bore hole processing, the boring cutter radial feed realizes easily, and during the very dark taper hole of boring, the mode radial feed when boring cutter is difficult to according to the boring shallow bore hole.The 3rd, be difficult to directly adopt deep hole machining technology such as drill gun, BTA brill, DF brill to accomplish the boring of taper deep hole.Eighties of last century; The mankind have captured the technical barrier of machining medium-length hole processing; Formed scientific modern deep hole machining technology, but should technology mainly be applicable to the processing of cylinder deep hole, its main feature is to adopt from leading the sizing cylindrical cutting tool; And the conical bore diameter is a variable, and the processing of directly applying mechanically deep hole machining technology solution taper deep hole acquires a certain degree of difficulty.
Although when design, people avoid the circular cone deep-hole structures, in some cases, are difficult to avoid fully the 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 mould can have taper hole, and when part is longer, just makes mould have the 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 bigger situation in aperture, perhaps, can only adapt to the 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 engine lathe; The situation of the little processing in aperture provides a kind of principle simple, wide adaptability; Can combine with modern cnc technology, can accurately control a kind of engine lathe that can be used for the taper deep hole boring in taper hole aperture.
The present invention realizes through following technical scheme:
A kind of engine lathe that can be used for the taper deep hole boring comprises 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, and the oil delivering unit support is fixed on the bed ways according to the length of workpiece; The oil delivering unit seat that is connected on the oil delivering unit support, the rear end of revolving meber is installed on the oil delivering unit seat through bearing, and the front end of revolving meber contacts with the workpiece rear end face; It is characterized in that the axial centre of boring bar and radially all perforates, boring cutter is installed in the radial hole of boring bar, be provided with bipyramid face core bar in the axial hole of boring bar; The tapering that the front end of bipyramid face core bar is provided with two conical surface bodies, its two conical surfaces equates that also being equipped with on the boring bar floats supports, and unsteady support comprises support bar, swivel nut and spring; Swivel nut is fixed in boring bar, and support bar passes the hole at swivel nut center, and the support bar bottom has annular protrusion; Between annular protrusion and the swivel nut spring is installed; Be processed with keyway on the support bar, card has stop pin in the keyway, has taper hole on the boring cutter; The axis direction of taper hole is parallel to the boring bar axis direction
The taper hole that the inner cone of described bipyramid face core bar passes on the boring cutter to be offered; The inner cone of bipyramid face core bar and a side contacts of taper hole, opposite side separates, the rear cone of bipyramid face core bar and an end in contact of support bar; The rear cone of the gradient of this end face of support bar and bipyramid face core bar is consistent; An other end of support bar contacts with the bore area of workpiece boring, and the gradient of this end face of support bar and the hole taper of workpiece are consistent, and unsteady support is provided with two; One of them unsteady axis of support and boring cutter parallel axes; And be positioned at the offside of boring cutter point of a knife with respect to the boring bar axis, the another one axis of support of floating is vertical with boring cutter axis antarafacial, and is positioned at the below of boring cutter;
Also be provided with cylinder core bar and screw thread spline core bar in the axial hole of boring bar; Bipyramid face core bar and cylinder core bar, screw thread spline core bar are coaxial, and the rear end of bipyramid face core bar is porose, and 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, matches with screw thread spline core bar front end smaller diameter end in the hole, has a pin to be horizontally through both matching parts; Threads engaged in the stomidium behind threaded portion and the boring bar on the screw thread spline core bar; Splined section on the screw thread spline core bar matches with spline housing, and splined section and contiguous position thereof are provided with spatially and staggered many vertical graduation marks of core bar axis, and spline housing links to each other with servomotor through shaft coupling; Servomotor links to each other with the numerical control control device, and the numerical control control device links to each other with impulse generator, and impulse generator is that 1 to 1 a pair of gear type machine driving pair links to each other with main shaft through gearratio,
Two long spiro nails of symmetry are installed on the boring cutter, and the gathering sill that two long spiro nails pass on the boring bar to be offered links to each other with short screw on being fixed in boring bar through extension spring, and gathering sill is along the length of the boring cutter axis direction diameter greater than long spiro nail,
Go back perforate on the boring bar industrial endoscope be installed,
The rear end of boring bar passes the oil delivering unit seat and is fixedly connected with slide carriage; The wall of oil delivering unit seat is provided with two radial direction through hole; Also be provided with axially extending bore on the oil delivering unit seat wall; Axially extending bore one end communicates with radial direction through hole near revolving meber one end, and the axially extending bore other end communicates with cannelure on the revolving meber, and 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 the scroll chuck cover, and scroll chuck cover bottom is provided with chip removal mouth.
Beneficial effect of the present invention:
The first, utilize the motion of conical surface control cutter radial, realized the needs of engine lathe processing taper hole deep hole.
The second, two supports of floating are set, share radial cutting force and tangential cutting power respectively, overcome in the deep taper hole process shortcoming of boring bar easy deformation.
The 3rd, be provided with bipyramid face core bar, the tapering of two conical surfaces is identical, makes that the radial motion of cutter is consistent with the radial motion of the support of floating, and making floats is supported in the process and can plays a role all the time.Support an end owing to float and contact, can play the benchmark of doing for oneself, self effect to a certain extent, help improving machining accuracy with finished surface.
The 4th, utilize servomotor and control device thereof, use the radial motion of spline housing 23 and thread mechanism control cutter simultaneously, technical scheme is simple, accurate, reliable, can satisfy the needs of processing high-quality taper deep hole.Be equipped with many graduation marks, can further grasp, check the taper hole diameter, prevent the generation of process quality issue.
The 5th, industrial endoscope is convenient to observe process, can in time handle in case pinpoint the problems, and avoids being difficult to observe in the common deep hole machining process drawback of cutting situation.
Description of drawings
Fig. 1 is a structural representation of the present invention,
Fig. 2 be A-A to structural representation,
Fig. 3 is a bipyramid face core bar structure sketch map,
Fig. 4 is a cylinder core bar structural representation,
Fig. 5 is a screw thread spline core bar structural representation,
Fig. 6 is the boring bar sketch map,
Fig. 7 be boring bar C-C to structural representation,
Among the figure: 1-lathe bed, 2-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-bipyramid face core bar, 10-boring cutter, 11-boring cutter seal, 12-swivel nut, 13-stop pin, 14-support bar; The 15-supporting sealing member of floating, 16-spring, 17-blind nut seal, 18-Work piece sealing spare, 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; The cylinder core bar, 29-oil delivering unit seat, 30-oil delivering unit support, 31-servomotor 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.
The specific embodiment
Existing engine lathe itself has the function of bore hole, and the present invention changes a social system engine lathe, can accomplish the taper deep hole boring.The transformation of the way or the part that increases comprise boring bar 7, boring cutter 10, bipyramid face core bar 9, cylinder core bar 28, screw thread spline core bar 27 etc.Scroll chuck 3 on the Lathe Spindle Box 4, the workpiece 2 that will have the taper deep hole is clamped, 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, is fixed with oil delivering unit seat 29 on the oil delivering unit support 30, and an end of revolving meber 32 is installed on the oil delivering unit seat 29 through 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 with mobile the do axial feed of slide carriage 26 along bed ways, and servomotor 25 and the shaft coupling 24 that is attached thereto, spline housing 23 also move thereupon.The power resources of slide carriage motion are main motor.
Two radial direction through hole of processing get into fluid from macropore on the wall of oil delivering unit seat 29, and fluid flows to the boring cutter place through the inner space of oil delivering unit seat 29, the inner space of revolving meber 32, washes away iron filings, cooling, lubricated working position.Iron filings, fluid are from other one section outflow of workpiece.Be provided with scroll chuck cover 37 at the scroll chuck place, spindle hole by the situation of the prior shutoff of manual work under, iron filings, fluid are under action of centrifugal force; Be thrown in the scroll chuck cover from the space between the claw; Prevent that fluid from throwing away, produce and pollute that the bottom of scroll chuck cover is provided with chip removal mouth; Adopt prior art in time with the iron filings cleaning, prevent the iron filings accumulation.
Little radial direction through hole from oil delivering unit seat 29 walls gets into other high-voltage oil liquid, through the pushing of the axially extending bore on oil delivering unit seat 29 walls revolving meber 32, 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 bipyramid face core bar 9, cylinder core bar 28, screw thread spline core bar 27, swivel nut 12, spring 16 are installed on boring bar, float and support 14.
The rear portion conical surface of bipyramid face core bar 9 and unsteady 14 the end in contact that supports, the other end that supports that floats contacts with workpiece 2, and the hole at swivel nut 12 middle parts of being fixed in boring bar is passed in the support 14 of floating, and can move with respect to swivel nut.Unsteady 14 1 ends that support have annular protrusion, and mounting spring 16 between annular protrusion and the swivel nut, and spring 16 makes ends of unsteady support 14 contact with the conical surface of bipyramid face core bar 9 all the time, and when 9 axially-movables of bipyramid face core bar, feasible floating supported 14 radial motions.When the hole of institute's boring diminishes, because 9 two conical surface taperings of bipyramid face core bar are identical, float and support 14 inwardly motions, adapt with the hole that is processed.The effect of supplemental support has been played in the existence of floating and supporting, and can reduce the distortion of boring bar, and this is very dark for the hole, and the taper hole processing when boring bar is longer acts on very big.
The two ends of unsteady support 14 have gradient, and with the end that bipyramid face core bar 9 contacts, the gradient and the core bar conical surface are consistent, an end that contacts with workpiece, and gradient and workpiece tapering are consistent.
Floating to support is processed with keyway, and dismountable stop pin 13 snaps in the keyway; Prevent to float and support 14 around self axis revolution.Float supporting 14 has two, one of them unsteady axis of support and boring cutter parallel axes or near level, and be positioned at the offside of boring cutter point of a knife with respect to the boring bar axis; Radial cutting force is born in help; Unsteady axis of support of another one and boring cutter axis space are staggered, and vertical or approaching vertical, are positioned at below the boring cutter; Tangential cutting power is born in help, reduces the distortion of boring bar.
Bipyramid face core bar 9 and cylinder core bar 28, screw thread spline core bar 27 are coaxial; The right-hand member of bipyramid face core bar 9 is porose; Hole and cylinder core bar 28 left end minor diameter positions match, and have a pin to be horizontally through both matching parts, and 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 the hole; Have one to sell the matching part that is horizontally through both, the threads engaged on the screw thread spline core bar 27 in threaded portion and the boring bar right-hand member hole, the splined section on the 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, and spline housing links to each other with servomotor 25 through shaft coupling 24.Many graduation marks can help to understand and check screw thread spline core bar 27 to move axially distance, help to understand and check the boring cutter radial motion distance that is attached thereto thus, promptly help to understand and check the taper hole aperture.
Industrial endoscope 34 is installed in the hole of being offered on the boring bar 7.The lens location design is advisable with the working angles that can observe the point of a knife place, but leaves the point of a knife certain distance, prevents that iron filings from damaging the transparent sealing lid of installing before the camera lens 35.
Two conical surface taperings of bipyramid face core bar 9 equate.
The system many places are provided with seal, to prevent oil liquid leakage.On swivel nut another one end face and swivel nut centre bore hole wall, be processed with cannelure, place blind nut seal 17, unsteady supporting sealing member 15 in the groove respectively, prevent oil liquid leakage.Both sides at boring cutter 10 bellmouths are processed with cannelure respectively, place seal 11 in the groove, anti-heads.One end of boring bar 7 is equipped with boring bar end cap 6, and boring bar end cap 6 end faces are offered cannelure, places seal 8 in the groove.Prevent draining.At cylinder core bar 28 cylindricals and boring bar 7 endoporus contact positions O-ring seals is installed.
Claims (1)
1. engine lathe that can be used for the 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, and oil delivering unit seat (29) is connected on the oil delivering unit support (30); The rear end of revolving meber (32) is installed on the oil delivering unit seat (29) through bearing; The front end of revolving meber (32) contacts with the workpiece rear end face, it is characterized in that the axial centre of boring bar (7) and radially all perforates, and boring cutter (10) is installed in the radial hole of boring bar (10); Be provided with bipyramid face core bar (9) in the axial hole of boring bar (7); The tapering that the front end of bipyramid face core bar (9) is provided with two conical surface bodies, its two conical surfaces equates that also being equipped with on the boring bar (7) floats supports, and unsteady support comprises support bar (14), swivel nut (12) and spring (16); Swivel nut (12) is fixed in boring bar (7); Support bar (14) passes the hole at swivel nut (12) center, and support bar (14) bottom has annular protrusion, and spring (16) is installed between annular protrusion and the swivel nut (12); Support bar is processed with keyway on (14), and card has stop pin (13) in the keyway; Boring cutter has taper hole on (10), and the axis direction of taper hole is parallel to boring bar (7) axis direction,
The inner cone of described bipyramid face core bar (9) passes the taper hole of being offered on the boring cutter (10); The inner cone of bipyramid face core bar (9) and a side contacts of taper hole, opposite side separates, an end in contact of the rear cone of bipyramid face core bar (9) and support bar (14); The gradient of this end face of support bar (14) and the rear cone of bipyramid face core bar (9) are consistent; An other end of support bar (14) contacts with workpiece (2) bore area of boring, and the gradient of this end face of support bar (14) and the hole taper of workpiece are consistent, and unsteady support is provided with two; One of them unsteady axis of support and boring cutter parallel axes; And be positioned at the offside of boring cutter point of a knife with respect to the boring bar axis, the another one axis of support of floating is vertical with boring cutter (10) axis antarafacial, and is positioned at the below of boring cutter (10);
Also be provided with cylinder core bar (28) and screw thread spline core bar (27) in the axial hole of boring bar (7); Bipyramid face core bar (9) and cylinder core bar (28), screw thread spline core bar (27) are coaxial; The rear end of bipyramid face core bar (9) is porose; Hole and cylinder core bar (28) front end minor diameter position match, and have a pin to be horizontally through both matching parts, and the rear end of cylinder core bar (28) is porose; Match with screw thread spline core bar (27) front end smaller diameter end in the hole; Have one to sell the matching part that is horizontally through both, the threads engaged behind last threaded portion of screw thread spline core bar (27) and the boring bar in the stomidium, the splined section on the 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, and spline housing links to each other with servomotor (25) through shaft coupling (24); Servomotor (25) links to each other with numerical control control device (31), and numerical control control device (31) links to each other with impulse generator (36), and to be that 1 to 1 a pair of gear type machine driving is secondary through gearratio link to each other with main shaft (5) impulse generator (36),
Two long spiro nails (39) of symmetry are installed on the boring cutter (10); Two long spiro nails (39) pass the gathering sill of being offered on the boring bar (7); Link to each other with short screw (38) on being fixed in boring bar (7) through extension spring (40), gathering sill is along the length of the boring cutter axis direction diameter greater than long spiro nail
Boring bar (7) is upward gone back perforate industrial endoscope is installed,
The rear end of boring bar (7) passes oil delivering unit seat (29) and is fixedly connected with slide carriage (26); The wall of oil delivering unit seat (29) is provided with two radial direction through hole; Also be provided with axially extending bore on oil delivering unit seat (29) wall; Axially extending bore one end communicates with radial direction through hole near revolving meber (32) one ends, and the axially extending bore other end communicates with cannelure on the revolving meber (32), and the inner space of oil delivering unit seat (29), the inner space of revolving meber (32) and the inner space of workpiece are connected; The scroll chuck of fixation workpiece front end (3) is outside equipped with scroll chuck cover (37), and scroll chuck cover (37) bottom is provided with chip removal mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210210094.6A CN102717119B (en) | 2012-06-25 | 2012-06-25 | A kind of engine lathe that can be used for taper deep hole boring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210210094.6A CN102717119B (en) | 2012-06-25 | 2012-06-25 | A kind of engine lathe that can be used for taper deep hole boring |
Publications (2)
| Publication Number | Publication Date |
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| CN102717119A true CN102717119A (en) | 2012-10-10 |
| CN102717119B CN102717119B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210210094.6A Active CN102717119B (en) | 2012-06-25 | 2012-06-25 | A kind of engine lathe that can be used for taper deep hole boring |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889841A (en) * | 2012-10-22 | 2013-01-23 | 无锡市迈日机器制造有限公司 | Gear M-value rapid diameter measuring jaw linkage mechanism |
| CN108672764A (en) * | 2018-07-16 | 2018-10-19 | 河南理工大学 | The adaptive brace type borer of the processing abdomen formula deep hole of cutter expandable |
| 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 |
| CN111957989A (en) * | 2020-08-18 | 2020-11-20 | 齐齐哈尔建华机械有限公司 | Method for machining deep hole groove |
| CN115846708A (en) * | 2023-02-15 | 2023-03-28 | 中北大学 | Boring and rolling compound cutter for conical deep hole |
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| CN201261080Y (en) * | 2008-09-26 | 2009-06-24 | 大连华锐股份有限公司 | Boring of tapered hole apparatus of numerical control machine |
| CN202752654U (en) * | 2012-06-25 | 2013-02-27 | 中北大学 | Ordinary lathe for boring of cone-shaped deep hole |
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| US3404588A (en) * | 1966-02-03 | 1968-10-08 | Pme Holding A G | Boring apparatus for conical bores |
| DE1652713A1 (en) * | 1968-03-13 | 1970-10-29 | Pme Holding Ag | Turning device for conical bores |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889841A (en) * | 2012-10-22 | 2013-01-23 | 无锡市迈日机器制造有限公司 | Gear M-value rapid diameter measuring jaw linkage mechanism |
| CN108672764A (en) * | 2018-07-16 | 2018-10-19 | 河南理工大学 | The adaptive brace type borer of the processing abdomen formula deep hole of cutter expandable |
| 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 |
| CN111957989A (en) * | 2020-08-18 | 2020-11-20 | 齐齐哈尔建华机械有限公司 | Method for machining deep hole groove |
| CN115846708A (en) * | 2023-02-15 | 2023-03-28 | 中北大学 | Boring and rolling compound cutter for conical deep hole |
| CN115846708B (en) * | 2023-02-15 | 2023-05-12 | 中北大学 | Boring and rolling composite cutter for conical deep hole |
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