CN208245867U - Numerical control taper deep hole drilling apparatus - Google Patents

Numerical control taper deep hole drilling apparatus Download PDF

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Publication number
CN208245867U
CN208245867U CN201820810259.6U CN201820810259U CN208245867U CN 208245867 U CN208245867 U CN 208245867U CN 201820810259 U CN201820810259 U CN 201820810259U CN 208245867 U CN208245867 U CN 208245867U
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China
Prior art keywords
boring
support
slot
pull rod
numerical control
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CN201820810259.6U
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Chinese (zh)
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谭德宁
孟凡召
陈福德
万志远
郑明辉
戴世群
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Shandong Huayu University of Technology
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Shandong Huayu University of Technology
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Abstract

Numerical control taper deep hole drilling apparatus, it is related to special type knife technical field, the numerical control taper deep hole drilling apparatus mainly includes borer, transmission device, driving device and support device, wherein, the connection of the lathe bed of support device and lathe, driving device is connect with support device, and driving device provides the power of feeding to borer by transmission device.On the one hand the technical solution of the application changes the mode of transfer force of conical core shaft and pull rod, so as to improve the stress of conical core shaft and pull rod, pull rod will not bend in the state of bearing pulling force, support is provided in the overall length of pull rod without boring bar, the weight for reducing boring bar, make it easy to using;On the other hand, Path of Force Transfer is optimized, the force-bearing situation of conical core shaft is further improved, improves the machining accuracy and reliability of numerical control taper deep hole drilling apparatus.

Description

Numerical control taper deep hole drilling apparatus
Technical field
This application involves special type knife technical fields, and in particular to a kind of numerical control cone for being mainly used for single cone hole deep hole machining Spend deep hole drilling apparatus.
Background technique
The processing of taper deep hole is a technical problem all the time, currently, existing molding deep hole working machine is such as TK2120 CNC deep-hole drilling & boring machine and 2MK2135 numerical control deep hole honing machine, can only process straight hole, can not process taper deep hole. Above-mentioned straight hole can be for example through-hole, blind hole or stepped hole etc..
In the case where no molding machine carries out taper deep hole machining, the tool of some auxiliary is devised in the prior art It is mounted on progress taper hole deep hole machining on existing lathe, for example, the Chinese invention that application publication number is CN102717119A is special Benefit application discloses a kind of center lathe that can be used for taper deep hole boring comprising lathe bed, boring bar and boring cutter, the axial direction of boring bar Center and radial all apertures, the radial hole of boring bar is interior to install boring cutter, is provided with Double-conical-surface core bar, Double-conical-surface in the axial hole of boring bar Two conical surface bodies of front end setting, the taper of two conical surface of core bar are equal, and floating support is also equipped on boring bar, is opened on boring cutter There is taper hole, the axis direction of taper hole is parallel to boring bar axis direction.
But there are following technical problems in the technical solution of above-mentioned patent application: one side Double-conical-surface core bar is to push away Mode pushes tool feeding, and since the diameter of workpiece taper hole limits, the diameter of boring bar and Double-conical-surface core bar is necessarily limited to smaller Diameter, and the rod piece of small diameter bears to be easily bent when thrust, causes the machining accuracy of workpiece insufficient;Alternatively, if wanting Make to be supported in the overall length of Double-conical-surface core bar, then the inner hole of boring bar and the outer circle of Double-conical-surface core bar is required to cooperate, The sectional area for increasing boring bar causes the heavier-weight of boring bar, is not convenient to use;On the other hand, the inner cone of Double-conical-surface core bar It is respectively used to support cutter and floating support with rear cone, floating support passes through knife to the bearing reaction and workpiece of Double-conical-surface core bar Have to Double-conical-surface core bar radial cutting component not point-blank, cause to vibrate in process larger, easily cause work The problem of machining accuracy and the roughness difference on part surface.
Therefore, designing a kind of high machining accuracy, service-strong numerical control taper deep hole drilling apparatus and technique becomes ability Field technique personnel technical problem urgently to be resolved.
Summary of the invention
The purpose of the application is, provides a kind of numerical control taper deep hole drilling apparatus and technique, on the one hand changes power transmission side The stress of formula and key components and parts;On the other hand, optimizing load transfer path, to solve existing in the prior art aforementioned ask Topic.
In order to solve the above technical problems, the one aspect of the application provides a kind of numerical control taper deep hole drilling apparatus, It include: the support device being connect with the lathe bed of lathe;The driving device being connect with the support device;Borer, including boring Head body, conical core shaft and tool apron, the boring cutter that the center of the boring head body is equipped with boring body core bore and is connected with the boring body core bore Slot, the conical core shaft are set in the boring body core bore, and the tool apron is arranged in the boring cutter slot, the conical core shaft tool The outside of tapered identical first cone and the second cone, the tool apron is equipped with mechanical clamped cutting blade, and the inside of the tool apron is equipped with First inclined-plane and the second inclined-plane, first inclined-plane mutually agree with first cone, second inclined-plane and second cone Body mutually agrees with;Transmission device, including boring bar, drive sleeve and pull rod set on the boring bar center, one end of the boring bar and institute The connection of boring head body is stated, the other end of the boring bar is connect with the support device;The pull rod is axially movable with the boring bar Connection, one end of the pull rod are connect with the conical core shaft, and the other end of the pull rod is equipped with thread segment;The drive sleeve quilt To can be rotated state, one end of the drive sleeve connect with the output end of the driving device for support, the transmission device it is another One end is connect with the thread segment screw-driven;And three support slots are radially provided on the boring head body, the support slot with The boring body core bore connects, and is equipped with the supporting block that can be radially slided, the inside of the supporting block in each support slot Be provided with third inclined-plane and the 4th inclined-plane, the third inclined-plane mutually agrees with first cone, the 4th inclined-plane with it is described Second cone is mutually agreed with, and the outside of the supporting block is equipped with guide pad;When the drive sleeve is rotated towards direction initialization, the pull rod Drive conical core shaft axial movement with pulling force to drive the tool apron and the supporting block synchronize be moved radially outward.
As the first improvement of the application numerical control taper deep hole drilling apparatus, described first, second, third, fourth tiltedly It is recessed inwardly to form inner fovea part in the middle part of face, the both ends of the inner fovea part and first cone or the second cone contact and institute It states and fills lubricating grease in inner fovea part.
As second of improvement of the application numerical control taper deep hole drilling apparatus, the outside of the supporting block and the tool apron Equipped with multiple ring-shaped grooves, the tension spring of annular is equipped in the ring-shaped groove.
As the third improvement of the application numerical control taper deep hole drilling apparatus, the connection of the boring bar and the drive sleeve End is installed with support sleeve, and the drive sleeve is rotatably connected with the support sleeve.
As the 4th kind of improvement of the application numerical control taper deep hole drilling apparatus, the pull rod is equipped with axial limit Slot is equipped with spacer pin corresponding to the position of the limiting slot on the boring bar, and the spacer pin is connect with the boring bar, the limit The front end of position slot is connect with the limiting slot.
The 5th kind of improvement as the application numerical control taper deep hole drilling apparatus, which is characterized in that the boring bar is by multistage Connection composition, the pull rod are made of multistage connection.
The 5th kind of improved further improvement as the application numerical control taper deep hole drilling apparatus, which is characterized in that institute It states and is equipped at least one support ring in the annular space between boring bar and the pull rod, the support ring and the fixed company of the boring bar It connects, the pull rod can be in axial sliding connection with the support ring.
As the 6th kind of the application numerical control taper deep hole drilling apparatus improvement, the support slot include the first support slot, Second support slot and third support slot, the boring cutter slot, first support slot, second support slot and third support Slot is sequentially arranged around the circumferencial direction of the boring head body, the circle of first support slot and the boring cutter slot in the boring head body 90 ° of circumferential direction interval;Second support slot and first support slot are 90 ° of the circumferencial direction interval of the boring head body;Institute Third support slot and the boring cutter slot are stated 76 ° of the circumferencial direction interval of the boring head body.
Further aspect of the application also provides a kind of to be filled using numerical control taper deep hole machining described in above-mentioned any one The taper deep hole processing technology of progress is set, the taper deep hole processing technology mainly comprises the steps that
S1 bores counter bore;
S2, according to stepped hole described in the ascending sequence of diameter of bore successively boring, when processing next section of stepped hole with The last period machined taper hole positioning support;
S3 utilizes grinding equipment honing workpiece taper hole.
Specifically, the grinding equipment includes:
Honing body, multiple slots that the center of the honing body is equipped with top gem of a girdle-pendant body core bore and is connected with the top gem of a girdle-pendant body core bore Body, the groove body is uniformly distributed in the circumferencial direction of the honing body, and being equipped with one in each groove body can radially stretch Out/retraction oilstone body;
Center-pole can be in axial sliding connection with the top gem of a girdle-pendant body core bore;
Oil stone base, the oil stone base are set in the groove body, and one end of the oil stone base and the honing body pivot connect It connects, the other end of the oil stone base and the oilstone body are pivotally connected;
Connecting rod, one end of the connecting rod and the center-pole are pivotally connected, the other end of the connecting rod and the oil stone base Middle part be pivotally connected.
Compared with the existing technology, the numerical control taper deep hole drilling apparatus of the application and technique have the advantages that one Aspect changes the mode of transfer force of conical core shaft and pull rod, and driving device pulls conical core shaft to transmit diameter to mechanical clamped cutting blade by pull rod To the power of feeding, so as to improve the stress of conical core shaft and pull rod, pull rod will not occur in the state of bearing pulling force Bending, provide support in the overall length of pull rod without boring bar, reduce the weight of boring bar, make it easy to using;It is another Aspect, the first cone promotion tool apron synchronous with the second cone and supporting block in conical core shaft move radially outward, so that workpiece Bearing reaction and workpiece to supporting block point-blank, optimize Path of Force Transfer, into one to the radial cutting component of cutter Step improves the force-bearing situation of conical core shaft, improves the machining accuracy and reliability of numerical control taper deep hole drilling apparatus.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the numerical control taper deep hole drilling apparatus of embodiment of the application;
Fig. 2 is borer structural schematic diagram and office in a kind of numerical control taper deep hole drilling apparatus of embodiment of the application Portion's enlarged drawing;
Fig. 3 is the A-A cross-sectional view of Fig. 2;
Fig. 4 is the structural schematic diagram of the conical core shaft in a kind of numerical control taper deep hole drilling apparatus of embodiment of the application;
Fig. 5 is the structural schematic diagram of the transmission device in a kind of numerical control taper deep hole drilling apparatus of embodiment of the application;
Fig. 6 is the contraction state structure of the grinding equipment in a kind of numerical control taper deep hole drilling apparatus of embodiment of the application Schematic diagram;
Fig. 7 is the spreading status architecture of the grinding equipment in a kind of numerical control taper deep hole drilling apparatus of embodiment of the application Schematic diagram;
Fig. 8 is the B-B cross-sectional view of Fig. 6;
Fig. 9 A- Fig. 9 D is a kind of numerical control taper deep hole processing technology process schematic of embodiment of the application.
Description of symbols
100- borer,
101- boring head body, 1011- boring body core bore, 1012- boring cutter slot, 1013a, 1013b, 1013c- first, second, third Support slot, 102- conical core shaft, the first cone of 1021-, the second cone of 1022-, 1023, the first, second support portion of 1024-, 103- tool apron, 104- mechanical clamped cutting blade, 105- boring body end lid, the first fastener of 106-, 107- supporting block, 107a, 107b, 107c- First, second, third supporting block, 1071- third inclined-plane, the 4th inclined-plane 1072-, the first tension spring of 108-, 109- guide pad, The first, second, third guide pad of 109a, 109b, 109c-, the second fastener of 110-, the second tension spring of 111-, 112- third tension spring, 113- bakelite block, the first inclined-plane 1141-, the second inclined-plane 1142-, 115- ring-shaped groove, 116- inner fovea part;
200- transmission device,
201,201a, 201b- boring bar, 2011- thread segment, 202,202a, 202b pull rod, 2021- limiting slot, 203- support Ring, 204- fixing pin, 205- spacer pin, 206- support sleeve, 207- first bearing, 208- drive sleeve, 209- second bearing, 210- snap ring;
300- driving device,
301- speed reducer, 3011- output end, 302- motor;
400- grinding equipment,
401- honing body, 4011- top gem of a girdle-pendant body core bore, 4012- groove body, 402- center-pole, 403- connecting rod, 404- oil stone base, 405- oilstone body, 406- top gem of a girdle-pendant body end lid;
500- support device.
Specific embodiment
By explaining that the preferred embodiment of following the application, the other objects and advantages of the application will be apparent.
As shown in Figure 1, a kind of numerical control taper deep hole drilling apparatus comprising borer 100, transmission device 200, driving Device 300 and support device 500, wherein support device 500 is connect with the lathe bed of lathe, driving device 300 and support device 500 connections, driving device 300 provide the power of feeding to borer 100 by transmission device 200.
Lathe described herein for example can be TK2120 CNC deep-hole drilling & boring machine, and the TK2120 lathe is special adds The equipment of work deep hole class workpiece, is equipped with Siemens's digital control system, close main shaft bearing and awards oily device note bearing, precision is high, Rigidity is good;It is shown and deep-controlled function with more accurate depth.There is the work of depth requirements in processing blind hole, stepped hole etc. When part, the advantages of which just seems especially prominent, while it remains T2120 product, it can not only drill, bore hole, may be used also To carry out rolling and processing.
As depicted in figs. 1 and 2, on the one hand the application technical solution changes the power transmission of conical core shaft 1012 and pull rod 202 Mode, driving device 300 pull conical core shaft 1012 to the power of the transmitting radial feed of mechanical clamped cutting blade 104 by pull rod 202, thus The stress of conical core shaft 1012 and pull rod 202 is improved, pull rod 202 will not bend in the state of bearing pulling force, Support is provided in overall length to which pull rod 202 does not need boring bar 201, is reduced the weight of boring bar 201, is kept its easy to operate;Separately On the one hand, the first cone 1021 in conical core shaft 1012 and the second cone 1022 push simultaneously tool apron 103 and supporting block 107 to Outer radial is mobile so that workpiece to the bearing reaction and workpiece of supporting block 107 to the radial cutting component of cutter in straight line On, Path of Force Transfer is optimized, the force-bearing situation of conical core shaft 1012 is further improved, improves numerical control taper deep hole machining dress The machining accuracy and reliability set.
Specifically, as shown in Figure 1, support device 500 is connect with the lathe bed (not shown) of lathe;Driving device 300 Including speed reducer 301 and the motor being connect with speed reducer 301 302, it is preferable that the motor 302 is AC servo motor.Subtract The shell of fast machine 301 is connect with support device 500.The left end of transmission device 200 is connect with borer 100, transmission device 200 Right end connect with support device 500.
The structure and working principle of borer 100 is discussed in detail first below.
As locating for Fig. 2, borer 100 includes boring head body 101, conical core shaft 1012 and tool apron 103, the boring head body The boring cutter slot 1012 that 101 center is equipped with boring body core bore 1011 and is connected with the boring body core bore 1011, the conical core shaft 1012 are set in the boring body core bore 1011, and conical core shaft 1012 and boring body core bore 1011 are small―gap suture cooperation, the tool apron 103 are arranged in the boring cutter slot 1012, and the conical core shaft 1012 has identical first cone 1021 of taper and the second cone Body 1022, the outside of the tool apron 103 are equipped with mechanical clamped cutting blade 104, and the inside of the tool apron 103 is equipped with the first inclined-plane 1141 and the Two inclined-planes 1142, first inclined-plane 1141 agree with 1021 phase of the first cone, second inclined-plane 1142 and described the Two cones, 1022 phase is agreed with.
As shown in Fig. 2, mechanical clamped cutting blade 104 has chip-breaker, can be replaced after a surface wear of mechanical clamped cutting blade 104 another One face continues to process, and improves cutting-tool's used life.
As shown in Fig. 2, the left end of boring head body 101 is equipped with boring body end lid 105, boring body end lid 105 and boring head body 101 pass through more A first fastener 106 connects, and the first fastener 106 for example can be soket head cap screw.
As shown in figure 3, being radially provided with three support slots 1013a, 1013b, 1013c, i.e., first on the boring head body 101 Support slot 1013a, the second support slot 1013b and third support slot 1013c, the first, second, third support slot 1013a, 1013b, 1013c are connect with the boring body core bore 1011, are equipped with the supporting block that can be radially slided in each support slot 107, the inside of the supporting block 107 is provided with third inclined-plane 1071 and the 4th inclined-plane 1072, the third inclined-plane 1071 and institute It states 1021 phase of the first cone to agree with, the 4th inclined-plane 1072 agrees with 1022 phase of the second cone.
As preferred embodiment, as shown in figure 3, the boring cutter slot 1012, the first support slot 1013a, described The two support slot 1013b and third support slot 1013c are sequentially arranged around the circumferencial direction of the boring head body 101, and described the One support slot 1013a and the boring cutter slot 1012 are 90 ° of the circumferencial direction interval of the boring head body 101;Second support slot 1013b and the first support slot 1013a are 90 ° of the circumferencial direction interval of the boring head body 101;The third support slot The angle [alpha] of 1013c and the boring cutter slot 1012 at the circumferencial direction interval of the boring head body 101 is 76 °.Correspondingly, first Bracer 107 and the first guide pad 109a are arranged in the first support slot 1013a;Second supporting block 107 and the second guide pad 109b It is arranged in the second support slot 1013b, third supporting block 107 and third guide pad 109c are arranged in third support slot 1013c. By verification experimental verification, the setting orientation of first, second, third above-mentioned support slot 1013a, 1013b, 1013c is conducive to balance Bearing of the cutting force and work piece inner surface generated in cutting process to first, second, third guide pad 109a, 109b, 109c Counter-force.When the setting of supporting block 107 and guide pad 109 ensure that bore hole, cutter is properly positioned, and provides cutter work in-process Stability and rigidity.
As preferred embodiment, as shown in Fig. 2, the outside of the supporting block 107 and the tool apron 103 is equipped with multiple rings Shape groove 115, the interior tension spring for being equipped with annular of the ring-shaped groove 115, i.e. the first, second, third tension spring 108,111,112 should First tension spring 108, the second tension spring 111 and third tension spring 112 are provided separately, wherein the setting of the first tension spring 108 is located proximate to machine 104 side of clip blade, third tension spring 112 are arranged in the other side of tool apron 103 and supporting block 107, and the setting of the second tension spring 111 then Position is then close to the middle position of tool apron 103 and supporting block 107.The setting position of first, second, third tension spring 108,111,112 It sets and tension spring is uniformly distributed the power of tool apron 103 and supporting block 107, be conducive to tool apron 103 and supporting block 107 to smooth Ground retracts.
As shown in figure 4, conical core shaft 1012 further includes the first support portion 1023 and the second support as preferred embodiment Portion 1024, first support portion 1023 and the second support portion 1024 and the first cone 1021 and the second cone 1022 are coaxially disposed, It is spaced a distance between each other;Correspondingly, it is provided in boring head body 101 and first support portion 1023 and the second support portion The 1024 one section of cylindrical hole matched, the first support portion 1023, the second support portion 1024 can the companies of sliding axially with the cylindrical hole It connects.First, second support portion 1023,1024 can play the role of centering to the first cone 1021 and the second cone 1022, make The central axis of the first cone 1021 and the second cone 1022 is located at the center of boring head body 101.
The working principle of above-mentioned borer 100 are as follows: as shown in Fig. 2, when conical core shaft 1012 moves axially to the right When, the first cone 1021 and the second cone 1022 move axially to the right therewith;First cone 1021, the first inclined-plane 1141 and third Inclined-plane 1071 agrees with, and the second cone 1022 is agreed with the second inclined-plane 1142, the 4th inclined-plane 1072, the first cone 1021 and the second cone Body 1022 is synchronous to push tool apron 103 and supporting block 107 to be moved radially outward, tool apron 103 and supporting block 107 synchronize press to workpiece Inner surface achievees the purpose that cutting, and during workpiece rotation, cutter is both in axial feed, by radial gradually spreading, this The track that sample cutter is walked out is exactly taper.
When conical core shaft 1012 moves axially to the left, tool apron 103 and supporting block 107 lose the first cone 1021 With the support of the second cone 1022, under the action of the first, second, third tension spring 108,111,112 being arranged on the outside, tool apron 103 and supporting block 107 radially-inwardly retract.
Specifically, when spreading is to range, the program of digital control system can give 300 1 signals of driving device, driving Device 300 by transmission device 200 pull conical core shaft 1012 move to right, tool apron 103 the first, second, third tension spring 108, 111, it retracts original position under the action of 112 rapidly automatically, completes one stroke.Then taper hole is completed according to preset program Processing.It should be noted that the biggish taper deep hole of taper deep hole, especially concentric reducer diameter difference, is not one step completed, need It repeatedly to feed processing and reach the processes such as processing purpose, such as a heavy boring, primary half right boring, specifically be realized by numerical control programming. Under conditions of guaranteeing reliable chip breaking, using the big flow cutting fluid of certain pressure carry out it is cooling, lubricate and chip removal, avoid and cut It considers the scuffing to machined surface to be worth doing, ensure that surface processing accuracy.
The axial feed of cutter is also by AC Servo Motor Control.In this way, radial feed, axial movement are by exchange Serve Motor Control, the processing drawing that can be provided according to user, writes a processing program, inputs digital control system, carries out two Axis driving issues order by digital control system control AC servo motor, in order cone hole machine is carried out to inner hole, it is entire to process Process is automatically performed.It should be noted that needing to pay attention to the adjustment of backlass when numerical control programming: key, planetary reducer There is backlass, needs to recycle all progress electric clearance compensation every time.
Wherein, digital control system and to digital control system carry out numerical control programming be the prior art, the emphasis of the application is to numerical control Taper hole deep hole drilling apparatus and technique.In addition, as shown in Figures 2 and 3, the outside of tool apron 103 is equipped with bakelite block 113, the bakelite Block 113 is connect by screw with tool apron 103;The outside of supporting block 107 is equipped with the guide pad 109 of hard alloy material, described to lead It is connect to block 109 with the supporting block 107 by the second fastener 110, the radial cutting that cutter generates during the cutting process point Power is balanced by the bearing reaction of guide pad 109, reduces the bending vibration in cutting process, and guide pad 109 can effectively rise To guiding role, certralizing ability is played when exiting workpiece.
As shown in Fig. 2 and its partial enlarged view, as preferred embodiment, first, second, third, fourth inclined-plane 1141,1142,1071,1072 middle part is recessed inwardly to form inner fovea part 116, the both ends of the inner fovea part 116 and described first Lubricating grease is filled in cone 1021 or the contact of the second cone 1022 and the inner fovea part 116.The both ends of the inner fovea part 116 and the One, the second cone 1022 contacts, and reduces first, second, third, fourth conical surface and the first cone 1021 or the second cone Face contact is changed to line contact, reduces the difficulty of processing by 1022 contact area, in addition, filling in above-mentioned inner fovea part 116 Lubricating grease internally can provide lubrication in the edge of recess portion 116 and the contact position of the first, second cone 1022, reduce opposite fortune Dynamic resistance, improves service life.
The structure and working principle of transmission device 200 is discussed in detail again below.
As described in figures 1 and 5, transmission device 200 is including boring bar 201, drive sleeve 208 and set on 201 center of boring bar Pull rod 202, one end of the boring bar 201 are connect with the boring head body 101, and the other end of the boring bar 201 and the support fill 500 connections are set, specially boring bar 201 is arranged in the inner hole of support device 500, and support device 500 can during the cutting process It plays a supporting role to boring bar 201;The pull rod 202 is axially movable with the boring bar 201 and connect, and the one of the pull rod 202 End is connect with the conical core shaft 1012, and the other end of the pull rod 202 is equipped with thread segment 2011;The drive sleeve 208 is propped up Support is can be rotated state, and one end of the drive sleeve 208 is connect with the output end 3011 of the driving device 300, the transmission The other end of device 200 is connect with 2011 screw-driven of thread segment.
Specifically, as shown in Figure 1 and Figure 5, the left end of boring bar 201 is threadedly coupled with boring head body 101, the right end of boring bar 201 Outside is connect with support device 500, and support sleeve 206 is equipped on the inside of the right end of boring bar 201, which is embedded at boring bar 201 Right end inner hole in, and be equipped on boring bar 201 and penetrate multiple holding screws of 201 outer wall of boring bar, the front end of holding screw It offsets with the outer surface of support sleeve 206, to support sleeve 206 is fixedly installed in the inner hole of boring bar 201.
As shown in figure 5, drive sleeve 208 is rotatably connected with support sleeve 206, specifically, one section of the left end of drive sleeve 208 is worn It is located in the inner hole of support sleeve 206, and first bearing 207 and second bearing 209 is respectively set in the left end of this section and right end, make To be preferred, the first bearing 207 and second bearing 209 are thrust ball bearing.Snap ring 210 is arranged in the left end of drive sleeve 208, should Snap ring 210 realizes the axial limiting of drive sleeve 208 Yu support sleeve 206.The inner hole of drive sleeve 208 is provided with internal screw thread, this is interior Screw thread is connect with 2011 screw-driven of thread segment of 202 right end of pull rod, that is to say, that when drive sleeve 208 rotates, pull rod 202 The axial movement of meeting under the action of thread segment 2011.The left end of pull rod 202 is threadedly coupled with conical core shaft 1012, pull rod 202 axial movement drives conical core shaft 1012 to move axially, and conical core shaft 1012 further drives tool apron 103 and supporting block 107 are moved radially outward.
As shown in figure 5, limitation pull rod 202 rotates, in the pull rod in order to move pull rod 202 only in the axial direction 202 are equipped with axial limiting slot 2021, and the position that the limiting slot 2021 is corresponded on the boring bar 201 is equipped with spacer pin 205, the spacer pin 205 is connect with the boring bar 201, and the front end of the spacer pin 205 is connect with the limiting slot 2021, limit Position slot 2021 can only move in the axial direction under the action of spacer pin 205.
As shown in figure 5, the boring bar 201 is connected with boring bar 201b by multistage boring bar 201a and is formed, two to connect section boring bar 201a and boring bar 201b can be using threaded connection;The pull rod 202 can also be connected by multistage and be formed, two to connect section pull rod 202a and 202b can use taper pin connection.That is, the length of boring bar 201 and pull rod 202 can according to need progress Design.
As preferred embodiment, as shown in figure 5, the inner hole in the connection of two sections of boring bars 201, in box thread one end In be embedded support ring 203, be equipped on boring bar 201 and fix the fixing pin 204 of the support ring 203.Pull rod 202 and support ring 203 inner hole can be in axial sliding connection, and support ring 203 can play the role of positioning support to pull rod 202.Above-mentioned support ring 203 may be multiple.
As shown in Figure 1, the output end 3011 of speed reducer 301 and 208 key of drive sleeve are sequentially connected in driving device 300.
Fig. 6 to Fig. 8 shows a kind of grinding equipment 400 of embodiment, introduces the grinding equipment of the embodiment in detail below 400 structure and working principle.
Fig. 6 shows the contraction state of the grinding equipment 400, and Fig. 7 shows the spreading state of the grinding equipment 400, Fig. 8 For the B-B cross-sectional view of Fig. 7.
As shown in Figure 6 to 8, the grinding equipment 400 includes honing body 401, center-pole 402, connecting rod 403, oil stone base 404 and oilstone body 405, specifically, the center of the honing body 401 be equipped with top gem of a girdle-pendant body core bore 4011 and with the top gem of a girdle-pendant body core bore 4011 four groove bodies 4012 being connected, certainly, those skilled in the art can also design two, three or five, six Groove body 4012.The groove body 4012 is uniformly distributed in the circumferencial direction of the honing body 401, is all provided in each groove body 4012 There is the oilstone body 405 that can be extended radially out/retract;The center-pole 402 can slide axially with the top gem of a girdle-pendant body core bore 4011 Connection;The oil stone base 404 is set in the groove body 4012, one end of the oil stone base 404 and 401 pivot of honing body Connection, the other end of the oil stone base 404 and the oilstone body 405 are pivotally connected;One end and the center of the connecting rod 403 Bar 402 is pivotally connected, and the middle part of the other end of the connecting rod 403 and the oil stone base 404 is pivotally connected.
As shown in fig. 6, the left end of honing body 401 is equipped with top gem of a girdle-pendant body end lid 406, which passes through soket head cap screw It is connect with honing body 401.
As shown in fig. 7, center-pole 402 pushes oil stone base 404 outside by connecting rod 403 when center-pole 402 moves to the left Side rotation, oil stone base 404 drive oilstone body 405 to be displaced outwardly, since oilstone body 405 and oil stone base 404 are pivotally connected, oilstone body 405 outside can be adjacent on the taper inner surface of workpiece, and the grinding equipment 400 of the present embodiment can be realized from the big of taper hole It holds to small end, and from small end to the two-way honing of big end, the effect that reciprocal honing improves Honing process can be carried out in this way Rate and processing quality.In addition, 405 telescopic extensions of oilstone body are larger, that is to say, that can in the grinding equipment 400 of the application Adapt to the workpiece Honing process of wider diameter range.
Above-mentioned grinding equipment 400 can be connect with transmission device 200, the boring bar 201 and honing body of transmission device 200 401 connections, the pull rod 202 of transmission device 200 are connect with the center-pole 402 of grinding equipment 400, and still, pull rod 202 is logical at this time The outside expansion for pushing center-pole 402 to realize oilstone body 405 is crossed, as long as also, due to 405 energy of oilstone body of grinding equipment 400 Enough to be bonded with the inner surface of workpiece taper hole, whether pull rod 202 is bent the honing precision for having no effect on grinding equipment 400.
When the diameter difference of taper hole concentric reducer is smaller, for example, diameter difference be not more than 15mm when, the number of the application can be used Control taper deep hole drilling apparatus is processed and formed at one time, and the grinding equipment 400 for reusing the application carries out honing and improves workpiece taper hole Bright and clean degree.
Specifically, borer 100 is being awarded in oily device guide sleeve, this guide sleeve is taper inner, consistent with test specimen taper, It plays the role of positioning to borer 100, this is initial position.For example, firstly, processing taper hole before basic hole be φ 126mm, into Row first time heavy boring, taper hole guide sleeve major part are made into φ 127mm, unilateral maximum machining allowance about 7mm, with axial feed penetration of a cutting tool Amount can be gradually increased, so, feed speed needs gradually decrease, and it is curved to can guarantee that the uniform taper hole of cutting force will not be walked in this way;Secondly, Carry out second half right boring taper hole, taper hole guide sleeve major part is made into φ 129.7,100 initial position of borer in guide sleeve, CNC automatic programming is carried out to workpiece, unilateral machining allowance is 2.7mm, and overall length processes taper hole.
Wherein, it awards oily device and guide sleeve is the prior art, effect is: (1) inputting coolant liquid to workpieces processing and seal. (2) boring bar is supported.(3) it is oriented to for borer.(4) bearing and top tight workpiece.(5) lathe bed is fixed.At the back side for awarding oily device, There is the petroleum pipeline come from cooling pump, coolant liquid is sent into workpiece cutting region by awarding oily device.On the head for awarding oily device, there is one Bore disk, bearing and top tight workpiece are used, it with workpiece with 30 ° of conical surfaces in conjunction with, be mounted on and award the hydraulic cylinder that oily device holds out against planker The power of generation is to workpiece pre-tightening.It in cone disk, has a guide sleeve, is oriented to for borer, replacement cutter must be replaced This guide sleeve.
It, can be deep using following taper when the diameter difference of taper hole concentric reducer is larger, such as when diameter difference is greater than 15mm Hole machined technique is processed.To process test specimen as φ 220x2600mm, the workpiece of taper hole concentric reducer φ 175- φ 130mm is carried out It illustrates.
The borer 100 of three kinds of specifications is designed, but transmission device 200 and driving device 300 are general, that is to say, that only need It is just processable to replace borer 100.One of which is above-mentioned borer 100, in addition two kinds borer 100 Tool apron 103 and guide pad 109 need to be replaced on the basis of aforementioned borer 100, outside diameter is sequentially increased 15mm respectively.
Procedure of processing is as follows: as shown in Figure 9 A, the first step bores three sections of counter bore axially uniformly distributed stepped hole, diameter point It Wei not φ 126mm, φ 143mm, φ 158mm.
Second step processes first segment taper hole using the numerical control taper deep hole drilling apparatus boring of the application as shown in Figure 9 B, The first segment taper hole is that internal diameter is one section the smallest.
Second segment section taper hole is processed in third step, boring, and boring second segment taper hole is needed in surplus≤2.7mm with first Section taper hole positioning and guiding processes second segment taper hole, and the seam diameter difference between such two sections is within 0.01mm.
4th step, processing third section taper hole method are identical as third step.Test specimen processing just meets technique requirement, surface in this way Roughness reaches within Ra3.2 μm.
Above-mentioned processing technology can process any taper hole in concentric reducer diameter difference 150mm with boring.
5th, using the 400 honing taper hole of grinding equipment of the application, no replacement is required during taper Deep-hole Grouting honing dress 400 are set, two-way honing can be carried out to taper hole at any angle, surface roughness can control within Ra0.4 μm.
In conclusion on the one hand the technical solution of the application changes the mode of transfer force of conical core shaft 1012 and pull rod 202, drive Dynamic device 300 transmits the power of radial feed by the pulling conical core shaft 1012 of pull rod 202 to mechanical clamped cutting blade 104, so as to improve The stress of conical core shaft 1012 and pull rod 202, pull rod 202 will not bend in the state of bearing pulling force, thus not Need boring bar 201 to provide support in the overall length of pull rod 202, reduce the weight of boring bar 201, make it easy to using;Another party Face, the first cone 1021 promotion tool apron 103 synchronous with the second cone 1022 and supporting block 107 in conical core shaft 1012 are to outer diameter To movement so that workpiece to the bearing reaction of supporting block 107 and workpiece to the radial cutting component of cutter point-blank, it is excellent Change Path of Force Transfer, further improved the force-bearing situation of conical core shaft 1012, improves numerical control taper deep hole drilling apparatus Machining accuracy and reliability.
In this application, term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " peace Dress ", " connected ", " connection ", the terms such as " fixation " shall be understood in a broad sense, can also be with for example, " connection " may be a fixed connection It is to be detachably connected, or be integrally connected;" connected " can be directly connected, can also be indirectly connected through an intermediary.It is right For those skilled in the art, the concrete meaning of above-mentioned term in this application can be understood as the case may be.
In this application, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. means to combine The particular features, structures, materials, or characteristics of embodiment or example description are contained at least one embodiment of the application or show In example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, The particular features, structures, materials, or characteristics of description can be in any one or more embodiment or examples in an appropriate manner In conjunction with.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.

Claims (8)

1. a kind of numerical control taper deep hole drilling apparatus characterized by comprising
The support device being connect with the lathe bed of lathe;
The driving device being connect with the support device;
Borer, including boring head body, conical core shaft and tool apron, the center of the boring head body be equipped with boring body core bore and with the boring The boring cutter slot that body core bore is connected, the conical core shaft are set in the boring body core bore, and the tool apron is arranged in the boring cutter In slot, the conical core shaft has identical first cone of taper and the second cone, and the outside of the tool apron is equipped with mechanical clamped cutting blade, The inside of the tool apron is equipped with the first inclined-plane and the second inclined-plane, and first inclined-plane mutually agrees with first cone, and described the Mutually agree with second cone on two inclined-planes;
Transmission device, including boring bar, drive sleeve and pull rod set on the boring bar center, one end of the boring bar and the boring head Body connection, the other end of the boring bar are connect with the support device;The pull rod is axially movable with the boring bar and connect, institute The one end for stating pull rod is connect with the conical core shaft, and the other end of the pull rod is equipped with thread segment;The drive sleeve is supported for The state of can be rotated, one end of the drive sleeve connect with the output end of the driving device, the other end of the transmission device and The thread segment screw-driven connection;And
Multiple support slots are radially provided on the boring head body, the support slot is connect with the boring body core bore, each support It is equipped with the supporting block that can be radially slided in slot, third inclined-plane and the 4th inclined-plane are provided on the inside of the supporting block, it is described Third inclined-plane mutually agrees with first cone, and the 4th inclined-plane mutually agrees with second cone, outside the supporting block Side is equipped with guide pad;When the drive sleeve is rotated towards direction initialization, the pull rod drives the conical core shaft axially to move with pulling force It is dynamic to drive the tool apron and the supporting block synchronize be moved radially outward.
2. numerical control taper deep hole drilling apparatus according to claim 1, which is characterized in that described first, second, third, It is recessed inwardly to form inner fovea part in the middle part of 4th inclined-plane, the both ends of the inner fovea part connect with first cone or the second cone Lubricating grease is filled in touching and the inner fovea part.
3. numerical control taper deep hole drilling apparatus according to claim 1, which is characterized in that the supporting block and the tool apron Outside be equipped with multiple ring-shaped grooves, the tension spring of annular is equipped in the ring-shaped groove.
4. numerical control taper deep hole drilling apparatus according to claim 1, which is characterized in that the boring bar and the drive sleeve Connecting pin be installed with support sleeve, the drive sleeve is rotatably connected with the support sleeve.
5. numerical control taper deep hole drilling apparatus according to claim 1, which is characterized in that the pull rod is equipped with axial Limiting slot is equipped with spacer pin corresponding to the position of the limiting slot on the boring bar, and the spacer pin is connect with the boring bar, institute The front end for stating limiting slot is connect with the limiting slot.
6. numerical control taper deep hole drilling apparatus according to claim 1, which is characterized in that the boring bar connects group by multistage At the pull rod is made of multistage connection.
7. numerical control taper deep hole drilling apparatus according to claim 6, which is characterized in that the boring bar and the pull rod it Between annular space in be equipped at least one support ring, the support ring is fixedly connected with the boring bar, the pull rod with it is described Support ring can be in axial sliding connection.
8. numerical control taper deep hole drilling apparatus according to claim 1, which is characterized in that the support slot includes first Support slot, the second support slot and third support slot, the boring cutter slot, first support slot, second support slot and described the Three support slots are sequentially arranged around the circumferencial direction of the boring head body, and first support slot and the boring cutter slot are in the boring head 90 ° of the circumferencial direction interval of body;Second support slot and first support slot are at the circumferencial direction interval of the boring head body 90°;The third support slot and the boring cutter slot are 76 ° of the circumferencial direction interval of the boring head body.
CN201820810259.6U 2018-05-29 2018-05-29 Numerical control taper deep hole drilling apparatus Active CN208245867U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108453288A (en) * 2018-05-29 2018-08-28 山东华宇工学院 Numerical control taper deep hole drilling apparatus and technique
CN110125447A (en) * 2019-05-05 2019-08-16 阜阳市飞弘机械有限公司 A kind of oil press gear-box porous special boring mill and its application method
CN115846708A (en) * 2023-02-15 2023-03-28 中北大学 Boring and rolling compound cutter for conical deep hole

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108453288A (en) * 2018-05-29 2018-08-28 山东华宇工学院 Numerical control taper deep hole drilling apparatus and technique
CN110125447A (en) * 2019-05-05 2019-08-16 阜阳市飞弘机械有限公司 A kind of oil press gear-box porous special boring mill and its application method
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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