CN1298470C - Boring mill for working special-shaped curved hole - Google Patents
Boring mill for working special-shaped curved hole Download PDFInfo
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- CN1298470C CN1298470C CNB2005100447938A CN200510044793A CN1298470C CN 1298470 C CN1298470 C CN 1298470C CN B2005100447938 A CNB2005100447938 A CN B2005100447938A CN 200510044793 A CN200510044793 A CN 200510044793A CN 1298470 C CN1298470 C CN 1298470C
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Abstract
The present invention discloses a boring machine for processing special-shaped holes with curved surfaces, which solves the problems that the existing boring machine can not realize the processing of special-shaped pinholes in a bell mouth type and a variable ellipse type and the processing of pinholes in a complicated spatial curved surface type. The present invention realizes the precision processing of the special-shaped holes in a complicated curved surface type, and the boring machine is particularly suitable for the precision processing of various special-shaped pinholes with pistons. The present invention comprises a machine body, and a mainshaft driving motor, a measuring device for measuring mainshaft angles, a workpiece clamping mechanism, a workpiece position mechanism, a numerical control device, a driving system of a longitudinal servo motor and an automatic lubrication device which are arranged on the machine body, and the mainshaft driving motor is connected with a small hole throttling type high-speed precise hydrostatic boring head. The present invention is characterized in that a magnetostriction feeding mechanism, a magnetostrictor cooling device and an electricity distributing device of the magnetostriction feeding mechanism are arranged in a mainshaft of the machine, the front end of the boring head is provided with a servo plasmodium of high frequency response, and the driving system of the longitudinal servo motor is provided with a longitudinal shift slipway of a linear guide.
Description
Technical field
The present invention relates to a kind of finish machining equipment of irregularly-shaped hole, relate in particular to a kind of boring machine that is used to process the abnormal curved surface hole of non-round surface.
Background technology
In order to improve bearing capacity, the pin-and-hole that requires some to bear complicated high machinery and thermic load part (as piston etc.) must be designed to non-circle (as ellipse) curved face type.Because the size of the bearing pin of carry-over moment distortion changes with the position of stress point is different, so that the ideal form of this class pin-and-hole cross section should be is oval, and the size of ovality changes with the difference of irregularly-shaped hole axial location, is to become oval; The axial plain line of this class pin-and-hole also should be a kind of shaped form (being usually said " horn mouth " shape) that meets the bearing pin stress.
Adopt traditional main spindle box to tilt once to adjust fixing ellipse of processing, can't realize becoming the processing of elliptical aperture, more can not realize the flexibility processing of other type non-circular hole; The inclination of main spindle box easily causes the interference in knife bar and processed hole, interferes for fear of knife bar and processed hole, must reduce the diameter of boring cutter bar, and this certainly will influence the rigidity of knife bar, and then has influenced the precision of processed pin-and-hole.
Existing domestic and international irregularly-shaped hole lathe, majority carries out the processing of " horn mouth " shape curve pin-and-hole only, up-to-date noncircular pin hole lathe can be realized the processing of " horn mouth+ellipse " type noncircular pin hole, and can't realize the processing of " horn mouth+change oval " type noncircular pin hole more can't realizing the processing of complex space curved face type pin-and-hole.
Summary of the invention
The purpose of this invention is to provide a kind of boring machine that is used for processing profiled curved hole.It both can realize traditional toroidal, ellipse, and the one-time positioning of horn mouth and oval combination shape irregularly-shaped hole shape, also can realize becoming the Precision Machining of oval complexity face, overcome and adopted traditional main spindle box to tilt once to adjust fixing oval drawback of processing, realized the flexibility processing of non-circular hole.
The present invention has adopted following technical scheme for achieving the above object:
A kind of boring machine that is used for working special-shaped curved hole, it comprises bed piece, the spindle drive motor of installing on the lathe bed, angle of eccentricity measurement mechanism, workpiece clamping mechanism, workpiece detent mechanism, numerical control device, servo longitudinal motor driven systems, automatic lubrication installation, spindle drive motor connects with hole throttle type high speed and precision fluid pressure boring head, it is characterized in that: magnetostrictor cooling device and dispensing electric installation that magnetostriction feed mechanism and magnetostriction feed mechanism are installed in machine tool chief axis; The front end of described boring head is installed the servo deformable body of high frequency response; The slide unit that vertically moves of linear guides is installed on the described servo longitudinal motor driven systems.
Described magnetostriction feed mechanism comprises magnetostriction executing agency pedestal, and this pedestal is connected with the magnetostrictor cooling system by cooling joint; This cooling system is installed on cylindrical and takes away in the axle sleeve of wire casing, and with the high speed rotary joint UNICOM of rear-end of spindle; The high-carbon steel top board that has pyramidal pits is installed at magnetostriction executing agency pedestal inner face, at the inner face of elastic deformable body corresponding the high-carbon steel top board of dribbling shape pit is installed, magnetostrictor and front and back rigid connector thereof are installed between two top boards with it; Preceding rigid attachment part contacts by steel ball that is installed on its front end and the high-carbon steel top board of dribbling the shape pit, and back rigid attachment part contacts with the high-carbon steel top board of band pyramidal pits by the steel ball that is installed on its rear end; The outside of magnetostrictor is the insulated coil support that endoporus has the spiral cooling bath, is wound with coil on the coil brace; Four equally distributed passages on cavity on the helicla flute of magnetostrictor on insulated coil support endoporus, magnetostrictor and the magnetostriction executing agency pedestal and the elastic deformable body constitute magnetostriction executing agency cold gas passage; The cold gas outlet is at preceding rigid attachment part place, and import is on the passage of magnetostriction executing agency pedestal bottom; In this pedestal, also has the coil line passage.
Described magnetostrictor cooling device structure is: the centre is the copper pipe of logical cold gas, the front end of copper pipe passes through flared fitting, link with magnetostriction pedestal rear end, the rear end of copper pipe is connected with the plug-in type seal nipple, and this plug-in type seal nipple directly inserts in the high speed rotary joint adapter sleeve; On the plug-in type seal nipple, O-ring seals is installed; High speed rotary joint adapter sleeve is by pressing closer screw, is fixed together with the rear end of main shaft; Outermost end at main shaft is a high-speed joint, and this high-speed joint is coupled as one with high speed rotary joint adapter sleeve by sealing thread.
Described dispensing electric installation comprises rear-end of spindle installation drive motors rotor tensioner cover and spindle motor rotor and spindle motor stator, and described tensioner cover connects with main shaft by locking nut; High speed brush power supply part is installed on the main shaft of the outer end of described rotor and stator, this power supply part outer end is a main shaft profile of tooth belt wheel, connect with encoder profile of tooth belt wheel by being with synchronously on this main shaft profile of tooth belt wheel, encoder profile of tooth belt wheel and encoder propeller shaft couplings, the encoder power transmission shaft) be installed in the rolling bearing, the encoder power transmission shaft is terminal to be connected with the main shaft pulse coder; The axle sleeve of taking away wire casing is equipped with in the inside of main shaft; The axle sleeve the inside is equipped with the big stroke magnetostrictor of GMA cooling system.
Described high speed brush power supply part comprises the electric brush slip ring support that is installed on the main shaft, this slip ring spider is made with insulating materials, two-supremes ski-running ring is installed on the slip ring spider, the centre isolates it with the insulation spacer, and two locking nuts are fixed together electric brush slip ring support, two-supremes ski-running ring, two insulation spacers and high-speed main spindle; Two-supremes ski-running ring connects with lead in the axle sleeve of taking away wire casing respectively; Brush assembly of electric is installed on the electric brush slip ring support, and there is the carbon brush supply lines its inside, the connecting line of high-speed slip rings and magnetostriction winding wire; The electric brush slip ring support is installed on the spindle motor shell; In spindle motor shell side is the brush assembly of electric seal cover; The carbon brush supply lines links to each other with the magnetostrictive dedicated control system of control by the via hole on the brush assembly of electric support; Screw is linked together brush assembly of electric support and spindle motor shell, and the brush assembly of electric gland is installed on the brush assembly of electric support.
Described main shaft profile of tooth belt wheel connects with main shaft by square key, and high-speed joint connects with main shaft by coupling sleeve, and the lead-out wire lead-out wire connection port of electric brush slip ring supply lines and magnetostriction coil is arranged in this coupling sleeve.
Described boring head comprises the main shaft that is installed in the main spindle box, front-end of spindle is installed in the hole throttle type high speed and precision hydrodynamic journal liquid polymers, in the outer end of this bearing is front bearing retainer, preceding Pressure gauge, orifice restriction device and pressure oil filter element are installed on the front portion on plane on the main spindle box, realize that the fuel feeding of fore bearing pressure oil cavity and lower oil cavitie oil pressure detect; The rear end of main shaft is installed on the rear bearing, and back Pressure gauge, rear bearing flow controller and pressure oil filter connect the rear portion that is installed on plane on the main spindle box, realizes that the fuel feeding of rear bearing pressure oil cavity and lower oil cavitie oil pressure detect; Rear end at main shaft also connects with main drive motor.
The servo deformable body of described high frequency response is installed in front-end of spindle, and it comprises elastomeric swing part and standing part, and the slit by through hole separately; Elastomeric material is a spring steel; Elastomeric standing part is one by screw and the machine tool chief axis binding that is installed in the counterbore; Boring cutter bar is coupled as one with elastomeric swing part by screw hole; The big stroke magnetostriction of GMA feed mechanism acts directly on the elastomeric swing part by the via hole on the elastomeric standing part, makes its axis of oscillation swing around through hole; The swing of elastomeric swing part makes the boring cutter bar that is installed on its end face produce radial displacement, has realized radially feed.
The present invention adopts magnetostriction micro-feed mechanism and control technology thereof, the servo deformation mechanism of high frequency response that adapts to the elliptical aperture High-speed machining, magnetostrictor dispensing power technology and cooling technology thereof in the electric brush type high-speed main spindle, special-purpose digital control system, the accurate linear guide rail slide unit of high accuracy etc., compared with former boring machine for boring special-shaped holes, this invention not only can realize traditional toroidal, oval, and horn mouth shapes with the oval one-time positioning that makes up the shape irregularly-shaped hole, its distinctive feature is: this invention also can realize becoming the Precision Machining of oval complexity face, that is: processed irregularly-shaped hole, the size of its cross section ovality along the irregularly-shaped hole axis direction can be linearly or the arbitrary curve rule change, overcome and adopted traditional main spindle box to tilt once to adjust fixing oval drawback of processing, and by the programming of circumference angle, also the piston pin hole shape of cross section can be processed into other complicated shapes, realize the flexibility digital control processing of non-circular hole; The plain line in its longitudinal section also can be processed to shapes of any curves, realizes the Precision Machining of complex-curved shape irregularly-shaped hole truly, is particularly suitable for the Precision Machining of all kinds of piston pinholes.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention;
Fig. 2 is the assembly drawing of boring head;
Fig. 3 is a magnetostriction feed mechanism structural representation;
Fig. 4 is a high speed brush power supply part structural representation;
Fig. 5 is the servo deformable body structural representation of high frequency response.
1, bed piece, 2, automatic lubrication installation, 3, spindle drive motor, 4, the magnetostrictor cooling device, 5, the angle of eccentricity measurement mechanism, 6, boring head, 7, high frequency response deformable body, 8, workpiece clamping mechanism, 9, the workpiece detent mechanism, 10, numerical control device, 11, the servo longitudinal motor driven systems, 12, linear guides vertically move slide unit, 13, main shaft, 14, main spindle box, 15, hole throttle type high speed and precision hydrodynamic journal liquid polymers, 16, front bearing retainer, 17, preceding Pressure gauge, 18, orifice restriction device and pressure oil filter element, 19, rear bearing, 20, back Pressure gauge, 21, rear bearing flow controller and pressure oil filter, 22, drive motors rotor tensioner cover, 23, the spindle motor rotor, 24, spindle motor stator, 25, locking nut, 26, high speed brush power supply part, 27, main shaft profile of tooth belt wheel, 28, encoder profile of tooth belt wheel, 29, the encoder power transmission shaft, 30, rolling bearing, 31, the main shaft pulse coder, 32, the axle sleeve that has trough, 33, the big stroke magnetostriction of GMA feed mechanism, 34, the carbon brush lead-out wire, 35, the magnetostrictor cooling line, 36, the encoder bearing, 37, high-speed joint, 38, the plug-in type seal nipple, 39, press closer screw, 40, magnetostriction executing agency pedestal, 41, high speed rotary joint adapter sleeve, 42, the O RunddichtringO, 43, cooling joint, 44, the high-carbon steel top board of band pyramidal pits, 45, the high-carbon steel top board of dribbling shape pit, 46, magnetostrictor, 47, preceding rigid connector, 48, back rigid connector, 49, steel ball, 50, the insulated coil support, 51, the magnetostriction body coil, 52, the spiral cooling bath, 53, the cold gas passage, 54, the cold gas outlet, 55, the coil line passage, 56, the electric brush slip ring support, 57, brush assembly of electric, 58, the carbon brush supply lines, 59, the spindle motor shell, 60, the brush assembly of electric seal cover, 61, the brush assembly of electric support, 62, screw, 63, the brush assembly of electric gland, 64, square key, 65, the connecting line port, 66, the electric brush slip ring lead-out wire, 67, the magnetostrictor lead-out wires of coil, 68, elastomeric swing part, 69, elastomeric standing part, 70, through hole, 71, counterbore, 72, the insulation spacer, 73, be with synchronously.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
As can be seen from Figure 1: bed piece 1 one sides are equipped with automatic lubrication installation 2, its top is spindle drive motor 3, it connects with hole throttle type high speed and precision fluid pressure boring head 6, connects magnetostrictor cooling inlet duct 4 and angle of eccentricity measurement mechanism 5 in the outside of spindle drive motor 3.The front end of described boring head 6 is installed the servo deformable body 7 of high frequency response.Servo longitudinal motor driven systems 11 in bed piece 1, what linear guides was installed on it vertically moves slide unit 12, and numerical control device 10 is installed on the lathe bed 1.Workpiece clamping mechanism 8 and workpiece detent mechanism 9 are installed on the lathe length feed slide unit 12.
Fig. 2 has provided the structural representation of described boring head 6.Hole throttle type high speed and precision fluid pressure boring head 6 comprises the main shaft 13 that is installed in the main spindle box 14, main shaft 13 front ends are installed in the hole throttle type high speed and precision hydrodynamic journal liquid polymers 15, in the outer end of this bearing 15 is front bearing retainer 16, and the big stroke magnetostriction of GMA execution unit 33, high frequency response deformable body 7, preceding Pressure gauge 17, orifice restriction device and pressure oil filter element 18 are installed on the front portion on plane on the main spindle box 14, realize that the fuel feeding of fore bearing pressure oil cavity and lower oil cavitie oil pressure detect; The rear end of main shaft 13 is installed on the rear bearing 19, and back Pressure gauge 20, rear bearing flow controller and pressure oil filter 21 are installed on the rear portion on plane on the main spindle box 14, realizes that the fuel feeding of rear bearing pressure oil cavity and lower oil cavitie oil pressure detect; Rear end at main shaft 13 also connects with main drive motor 3, and wherein drive motors rotor tensioner cover 22 and spindle motor rotor 23 and spindle motor stator 24 are installed in main shaft 13 rear ends, and described tensioner cover 22 connects with main shaft 13 by locking nut 25; High speed brush power supply part 26 is installed on the outer end main shaft 13 of described rotor 23 and stator 24, these power supply part 26 outer ends are main shaft profile of tooth belt wheel 27, on this main shaft profile of tooth belt wheel 27 by being with 73 to connect synchronously with encoder profile of tooth belt wheel 28, encoder profile of tooth belt wheel 28 connects with encoder power transmission shaft 29, encoder power transmission shaft 29 is installed in the rolling bearing 30, rolling bearing 30 is installed on the encoder bearing 36, and encoder power transmission shaft 29 ends connect with main shaft pulse coder 31.Axle sleeve 32 and the magnetostrictor cooling line 35 of taking away wire casing is housed in the inside of main shaft 13; Axle sleeve 32 the insides also are equipped with the big stroke magnetostrictor of GMA cooling system.Main shaft profile of tooth belt wheel 27 connects with main shaft 13 by square key 64, high-speed joint 37 connects with main shaft 13 by coupling sleeve 41, in this coupling sleeve 41 lead-out wire connection port 65 is arranged, the lead-out wire of electric brush slip ring supply lines 66 and magnetostriction body coil 51 is drawn thus, and in this connection.
Magnetostriction mechanism as shown in Figure 3, magnetostriction executing agency pedestal 40 is connected with the magnetostrictor cooling system by cooling joint 43; This cooling system is installed on cylindrical and takes away in the axle sleeve 32 of wire casing, and with high speed rotary joint 37 UNICOMs of main shaft 13 rear ends; The high-carbon steel top board 44 that has pyramidal pits is installed at magnetostriction executing agency pedestal 40 inner faces, be equipped with at the inner face of elastic deformable body corresponding between high-carbon steel top board 45, two top boards of dribbling shape pit magnetostrictor 46 and preceding rigid connector 47 and back rigid connector 48 are installed with it; Preceding rigid attachment part 47 contacts by steel ball 49 that is installed on its front end and the high-carbon steel top board 45 of dribbling the shape pit, and back rigid attachment part 48 contacts with the high-carbon steel top board 44 of band pyramidal pits by the steel ball 49 that is installed on its rear end; The outside of magnetostrictor 46 is insulated coil supports 50 that endoporus has the spiral cooling bath, is wound with coil 51 on the coil brace 50; Helicla flute 52 on magnetostrictor 46 and insulated coil support 50 endoporus, magnetostrictor 46 on magnetostriction executing agency pedestal 40 cavity 53 and elastic deformable body on 4 equally distributed passages 54, constitute magnetostriction executing agency cold gas passage; Cold gas outlet 54 is on deformable body 7, and import is on the passage of magnetostriction executing agency pedestal 40 bottoms; In this pedestal 40, also has coil line passage 55.
The lead-out wire 67 of magnetostriction body coil 51 is from the rear end of main shaft 13, and trough and coil channel 55 above the warp beam sleeve 32 arrive coil 51, realize the power supply of coil 51; Cold gas is by cooling joint 43, through the cooling duct 53, from the servo deformable body 7 front ends output of high frequency response.This cold gas can realize 46 coolings of magnetoconstriction body on the one hand, can export from boring cutter bar on the other hand, realizes the air cooling in the boring cutter process, helps stablizing processing dimension.Boring cutter bar is fixed on the front end of deformable body 7, by the servo oscillating of deformable body 7, realizes the radially feed campaign of boring cutter.
Big stroke magnetostrictor cooling system structure such as Fig. 2, Fig. 3, shown in Figure 4: be the copper pipe of logical cold gas in the middle of the main shaft 13, the front end of copper pipe passes through flared fitting, link with magnetostriction pedestal 40 rear ends, the rear end of copper pipe is connected with plug-in type seal nipple 43, and this plug-in type seal nipple 43 directly inserts in the high speed rotary joint adapter sleeve 41; On the plug-in type seal nipple 43, O-ring seals 42 is installed; High speed rotary joint adapter sleeve 41 is by pressing closer screw 39, is fixed together with the rear end of main shaft 13; Outermost end at main shaft 13 is a high-speed joint 37, and this high-speed joint 37 is coupled as one with high speed rotary joint adapter sleeve 41 by sealing thread.
High speed brush power supply part as shown in Figure 4, comprise the electric brush slip ring support 56 that is installed on the main shaft 13, these slip ring spider 56 usefulness insulating materials are made, two-supremes ski-running ring is installed on the slip ring spider 56, the centre isolates it with the insulation spacer, and two locking nuts are fixed together electric brush slip ring support 56, two-supremes ski-running ring, two insulation spacers 72 and high-speed main spindle 13; Two-supremes ski-running ring connects with lead in the axle sleeve 32 of taking away wire casing respectively; Brush assembly of electric 57 is installed on the brush carriage 61, and there is carbon brush supply lines 58 its inside; Brush assembly of electric support 61 is installed on the spindle motor shell 59; In spindle motor shell 59 sides is brush assembly of electric seal cover 60; Carbon brush supply lines 58,34 links to each other with the magnetostrictive dedicated control system of control by the via hole on the brush assembly of electric support 61; Screw 62 is linked together brush assembly of electric support 61 and spindle motor shell 59, and brush assembly of electric gland 63 is installed on the brush assembly of electric support 61.The main effect of this assembly is to realize under the high-speed case power supply and the cooling of main shaft 13 inner mangneto line stretcher circles 51.The control electric current of computer output is applied on the main shaft 13 inner mangneto line stretcher circles 51 by two carbon brush supply lines, realizes the SERVO CONTROL of magnetostrictive displacement amount, and then realizes the SERVO CONTROL of tool displacement amount.
The servo deformable body 7 of high frequency response as shown in Figure 5, it is installed in main shaft 13 front ends, it comprises elastomeric swing part 68 and standing part 69, the slit by through hole 70 is separately; Elastomeric material is a spring steel, and elastomeric standing part 69 is one by screw and machine tool chief axis 13 bindings that are installed in the counterbore 71; Boring cutter bar is coupled as one by screw hole and elastomeric swing part 68; The big stroke magnetostriction of GMA execution unit 8 acts directly on the elastomeric swing part 68 by the via hole on the elastomeric standing part 69, makes its axis of oscillation swing around through hole 70; The swing of elastomeric swing part 68 makes the boring cutter bar that is installed on its end face produce radial displacement, has realized radially feed.
Operation principle of the present invention is as follows:
1. the formation of high speed boring campaign, Fig. 1:
We are as can be seen from Fig. 1: boring bar is fixed on the deformable body 7, and deformable body 7 links to each other with machine tool chief axis 13, and spindle drive motor 3 drives machine tool chief axis 13 rotation at a high speed, has driven the high speed rotary motion of boring cutter bar, thereby has realized the high speed boring campaign of boring machine.
The formation of 2. little radially feed campaign:
From Fig. 4, we as can be seen: the control electric current of computer output is applied to main shaft 13 inner mangneto line stretcher circles 51 by two carbon brush supply lines, realizes the SERVO CONTROL of magnetostrictive displacement amount; From Fig. 3, we as can be seen: the displacement of magnetostrictor 46 makes elastomer distortion, has realized the swing of boring cutter bar, thereby realizes the SERVO CONTROL of tool displacement amount.
3. shaping of horn mouth pin-and-hole:
From Fig. 1, we as can be seen: servo longitudinal drive system 11, drive to adopt the slide unit 12 of accurate linear guide rail to do the length feed motion of lathe.So the accurate slide unit 12 that the SERVO CONTROL of the boring cutter displacement of magnetostrictor 46 controls and servomotor 11 drive is made moving interpolation, the Precision Machining that can finish various toroidal irregularly-shaped holes is shaped.
The processing of irregularly-shaped hole longitudinal section curve morph line, be to realize by the radial feed motion of boring cutter and the length feed motion interpolation of lathe, so, the interpolation of irregularly-shaped hole longitudinal type line, being actually the length feed motion of lathe and the interpolation of magnetostriction control coil bias current value, is a kind of low frequency control electric current that carries out with the lengthwise movement of lathe.
4. oval and become shaping of oval pin-and-hole:
The deflection of magnetostrictor 46, the size with the electric current of coil has linear relationship; The size of the electric current by coil can realize by the PWM pulsewidth modulation.Has certain functional relation (linear approximate relationship) between the size of the electric current after the pulsewidth modulation and the PWM dutycycle.By certain relation,, realize the SERVO CONTROL of magnetostrictive displacement amount by the different dutycycle of control PWM.
The processing of oval irregularly-shaped hole is at boring dynamic head main spindle 13 at a high speed in the rotation, carries out through the electric current of magnetostriction coil 51 and angle of eccentricity that oval interpolation realizes, the size of electric current in the magnetostriction coil 51 is the function of boring spindle corner.Because the boring spindle rotating speed is higher, so the electric current of process magnetostriction control coil is a kind of high frequency electric that changes at a high speed with the boring spindle corner.The axial location of a corresponding irregularly-shaped hole, promptly corresponding concrete ovality numerical value.The SERVO CONTROL of the boring cutter displacement of magnetostrictor 46 controls is carried out moving interpolation with the boring spindle corner, can realize the Precision Machining in all kinds of ellipses and other shaped form hole.The computing of interpolation track is finished by the digital control system of special use.
So-called become oval irregularly-shaped hole, be meant the size of the ovality in processed hole, change by a certain rule (being generally the straight line rule) along the axis direction in hole.Promptly become in the process of oval pin-and-hole, the size of ovality is the function of piston pin hole axial feed coordinate.The value of a corresponding ovality, current value in the promptly corresponding magnetostriction control coil, so the process of change elliptical aperture is actually the process that the realization coil is controlled the piston pin hole axial feed motion interpolation of electric current and the vertical slide unit Feed Motion Control of lathe.In the interpolation process, the electric current in the magnetostriction coil 51 is subjected to the constraint of boring spindle corner again when the axial coordinate with irregularly-shaped hole is independent variable, and finally reflection is the electric current that a kind of high frequency changes.
5. horn mouth makes up shaping of shape irregularly-shaped hole with the change ellipse:
Ellipse and the processing that becomes oval irregularly-shaped hole, the electric current that requires magnetostriction coil 51 are the electric currents that a kind of high frequency changes; The processing of irregularly-shaped hole longitudinal section curve morph line is a kind of low frequency control electric current that carries out with the lengthwise movement of lathe.Two kinds of control electric currents are independent variable with the axis coordinate of irregularly-shaped hole all, realize linear superposition, and the control electric current after the stack is input to magnetostriction coil 51, have realized the stack of cutter high frequency and low frequency movement.Interpolation is carried out in the irregularly-shaped hole axial direction motion of the vertical slide unit control of the Tool advance of this stack and lathe, has finished horn mouth and has been shaped with Precision Machining oval and the oval combination of change shape irregularly-shaped hole.
6. adopt the precise motion slide unit of the linear guide rail of high accuracy
The low-speed stability that the vertical slide unit of lathe moves has been optimized in the employing of the linear guide rail of high accuracy, makes the plain line good linearity of processed irregularly-shaped hole, the surface roughness height.
Claims (8)
1, a kind of boring machine that is used for working special-shaped curved hole, it comprises bed piece (1), lathe bed (1) is gone up the spindle drive motor of installing (3), angle of eccentricity measurement mechanism (5), workpiece clamping mechanism (8), workpiece detent mechanism (9), numerical control device (10), servo longitudinal motor driven systems (11), automatic lubrication installation (2), spindle drive motor (3) connects with hole throttle type high speed and precision fluid pressure boring head (6), it is characterized in that: magnetostrictor cooling device (4) and dispensing electric installation that magnetostriction feed mechanism (33) and magnetostriction feed mechanism (33) are installed in machine tool chief axis (13); The front end of described boring head (6) is installed the servo deformable body of high frequency response (7); What linear guides was installed on the described servo longitudinal motor driven systems (11) vertically moves slide unit (12).
2, the boring machine that is used for working special-shaped curved hole according to claim 1 is characterized in that: described magnetostriction feed mechanism comprises magnetostriction executing agency pedestal (40), and this pedestal is connected with the magnetostrictor cooling system by cooling joint (43); This cooling system is installed on cylindrical and takes away in the axle sleeve of wire casing (32), and with high speed rotary joint (37) UNICOM of main shaft (13) rear end; The high-carbon steel top board (44) that has pyramidal pits is installed at magnetostriction executing agency pedestal (40) inner face, at the inner face of elastic deformable body corresponding the high-carbon steel top board (45) of dribbling shape pit is installed, magnetostrictor (46) and front and back rigid connector thereof are installed between two top boards with it; Preceding rigid attachment part (47) contacts by steel ball (49) that is installed on its front end and the high-carbon steel top board (45) of dribbling the shape pit, and back rigid attachment part (48) contacts with the high-carbon steel top board (44) of band pyramidal pits by the steel ball (49) that is installed on its rear end; The outside of magnetostrictor (46) is the insulated coil support (50) that endoporus has the spiral cooling bath, is wound with coil (51) on the coil brace; Four equally distributed passages (54) on cavity (53) on helicla flute (52), magnetostrictor (46) and the magnetostriction executing agency pedestal (40) of magnetostrictor (46) on insulated coil support (50) endoporus and the elastic deformable body constitute magnetostriction executing agency cold gas passage; Cold gas outlet (54) is located at preceding rigid attachment part (47), and import is on the passage of magnetostriction executing agency pedestal (40) bottom; In this pedestal, also has coil line passage (55).
3, the boring machine that is used for working special-shaped curved hole according to claim 1, it is characterized in that: described magnetostrictor cooling device (4) structure is: the centre is the copper pipe of logical cold gas, the front end of copper pipe passes through flared fitting, link with magnetostriction pedestal (40) rear end, the rear end of copper pipe is connected with plug-in type seal nipple (43), and this plug-in type seal nipple (43) directly inserts in the high speed rotary joint adapter sleeve (41); On plug-in type seal nipple (43), O-ring seals (42) is installed; High speed rotary joint adapter sleeve (41) is by pressing closer screw (39), is fixed together with the rear end of main shaft (13); Outermost end at main shaft (13) is high-speed joint (37), and this high-speed joint (37) is coupled as one with high speed rotary joint adapter sleeve (41) by sealing thread.
4, the boring machine that is used for working special-shaped curved hole according to claim 1, it is characterized in that: described dispensing electric installation comprises main shaft (13) rear end installation drive motors rotor tensioner cover (22) and spindle motor rotor (23) and spindle motor stator (24), and described tensioner cover (22) connects with main shaft (13) by locking nut (25); High speed brush power supply part (26) is installed on the main shaft of the outer end of described rotor and stator, this power supply part right-hand member is a main shaft profile of tooth belt wheel (27), this main shaft profile of tooth belt wheel (27) is gone up by being with (73) to connect with encoder profile of tooth belt wheel (28) synchronously, encoder profile of tooth belt wheel (28) connects with encoder power transmission shaft (29), encoder power transmission shaft (29) is installed in the rolling bearing (30), and encoder power transmission shaft (29) is terminal to be connected with main shaft pulse coder (31); The axle sleeve (32) of taking away wire casing is equipped with in the inside of main shaft (13); The axle sleeve the inside is equipped with the big stroke magnetostrictor of GMA cooling system.
5, the boring machine that is used for working special-shaped curved hole according to claim 4, it is characterized in that: described high speed brush power supply part (26) comprises the electric brush slip ring support (56) that is installed on the main shaft (13), this slip ring spider is made with insulating materials, two-supremes ski-running ring is installed on the slip ring spider (56), the middle insulation spacer (72) of using is with its isolation, and two locking nuts (25) are fixed together electric brush slip ring support (56), two-supremes ski-running ring, two insulation spacers (72) and high-speed main spindle (13); Two-supremes ski-running ring connects with lead in the axle sleeve of taking away wire casing (32) respectively; Brush assembly of electric (57) is installed on the electric brush slip ring support (56), and there are carbon brush supply lines (58,34), the connecting line of magnetostriction winding wire and high-speed slip rings (66) in its inside; Electric brush slip ring support (56) is installed on the spindle motor shell (59); In spindle motor shell (59) side is brush assembly of electric seal cover (60); Carbon brush supply lines (58,34) links to each other with the magnetostrictive dedicated control system of control by the via hole on the brush assembly of electric support (61); Screw is linked together brush assembly of electric support (61) and spindle motor shell (59), and brush assembly of electric gland (63) is installed in (61) on the brush assembly of electric support.
6, the boring machine that is used for working special-shaped curved hole according to claim 4, it is characterized in that: described main shaft profile of tooth belt wheel (27) connects with main shaft (13) by square key (64), high-speed joint (37) connects with main shaft (13) by coupling sleeve (41), and the lead-out wire lead-out wire connection port (65) of electric brush slip ring supply lines and magnetostriction coil is arranged in this coupling sleeve.
7, the boring machine that is used for working special-shaped curved hole according to claim 1, it is characterized in that: described boring head (6) comprises the main shaft (13) that is installed in the main spindle box (14), main shaft (13) front end is installed in the hole throttle type high speed and precision hydrodynamic journal liquid polymers (15), in the outer end of this bearing is front bearing retainer (16), preceding Pressure gauge (17), orifice restriction device and pressure oil filter element (18) are installed on the front portion that main spindle box (14) is gone up the plane, realize that the fuel feeding of fore bearing pressure oil cavity and lower oil cavitie oil pressure detect; The rear end of main shaft (13) is installed on the rear bearing (19), and back Pressure gauge (20), rear bearing flow controller and pressure oil filter (21) are installed on the rear portion that main spindle box (14) is gone up the plane, realizes that the fuel feeding of rear bearing pressure oil cavity and lower oil cavitie oil pressure detect; Rear end at main shaft (13) also connects with main drive motor (3).
8, the boring machine that is used for working special-shaped curved hole according to claim 1, it is characterized in that: the servo deformable body of described high frequency response (7) is installed in main shaft (13) front end, it comprises elastomeric swing part (68) and standing part (69), and two parts separate by the slit of through hole (70); Elastomeric material is a spring steel; Elastomeric standing part (69) is one by screw and machine tool chief axis (13) binding that is installed in the counterbore (71); Boring cutter bar is coupled as one with elastomeric swing part (68) by screw hole; The big stroke magnetostriction of GMA feed mechanism (33) acts directly on the elastomeric swing part (68) by the via hole on the elastomeric standing part (69), makes its axis of oscillation swing around through hole (70); The swing of elastomeric swing part (68) makes the boring cutter bar that is installed on its end face produce radial displacement, has realized radially feed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100447938A CN1298470C (en) | 2005-09-22 | 2005-09-22 | Boring mill for working special-shaped curved hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100447938A CN1298470C (en) | 2005-09-22 | 2005-09-22 | Boring mill for working special-shaped curved hole |
Publications (2)
| Publication Number | Publication Date |
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| CN1743111A CN1743111A (en) | 2006-03-08 |
| CN1298470C true CN1298470C (en) | 2007-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100447938A Expired - Fee Related CN1298470C (en) | 2005-09-22 | 2005-09-22 | Boring mill for working special-shaped curved hole |
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| Country | Link |
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| CN (1) | CN1298470C (en) |
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Assignee: Foshan Soontrue Enterprise Co., Ltd. Assignor: Shandong University Contract fulfillment period: 2007.5.4 to 2012.5.3 contract change Contract record no.: 2009440001318 Denomination of invention: Boring mill for working special-shaped curved hole Granted publication date: 20070207 License type: Exclusive license Record date: 2009.8.27 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.5.4 TO 2012.5.3; CHANGE OF CONTRACT Name of requester: FOSHAN CITY SONGCHUAN ENTERPRISE CO., LTD. Effective date: 20090827 |
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Granted publication date: 20070207 Termination date: 20120922 |