CN209379938U - A kind of adjustable dead center of precision - Google Patents

A kind of adjustable dead center of precision Download PDF

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Publication number
CN209379938U
CN209379938U CN201822036086.XU CN201822036086U CN209379938U CN 209379938 U CN209379938 U CN 209379938U CN 201822036086 U CN201822036086 U CN 201822036086U CN 209379938 U CN209379938 U CN 209379938U
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China
Prior art keywords
adjustment seat
attachment base
gland
installation
spring
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CN201822036086.XU
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Chinese (zh)
Inventor
陈鹏
李立杰
杨纪东
胡萌
郭海营
徐万江
赵宇
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707th Research Institute of CSIC
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707th Research Institute of CSIC
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Abstract

The utility model relates to a kind of adjustable dead centers of precision, including fixing axle, centering ring, adjustment seat, attachment base, bearing, spring, gland and tail centre, coaxially produce the taper shank for connecting with lathe in the left side of fixing axle, the outside of the right end of fixing axle connects centering ring, screw is adjusted by bulb inside centering ring and connects adjustment seat, the left side of adjustment seat and the right side of fixing axle connect, attachment base is co-axially mounted in adjustment seat, spring is set between the left side and adjustment seat of the attachment base, the right side of attachment base is co-axially mounted bearing, gland is coaxially mounted to the outside of adjustment seat, the tail portion of tail centre is coaxially installed in gland and attachment base, the tip of tail centre is located at the outside of gland.The utility model is by designing a kind of adjustable dead center of precision, improve the part range of work of the position precision and turn-milling complex machining center between the top common axis in lathe front and back and tool apron, it ensure that product quality, while part processing efficiency can also be promoted that there is promotional value.

Description

A kind of adjustable dead center of precision
Technical field
The utility model relates to High Efficiency NC Machining Technology field, especially a kind of radially adjustable pressure of precision is controllable Lathe tail centre.
Background technique
In Precision Machining field, due to the structural particularity of certain parts, using numerical-control turn-milling combined machining method into Row processing meeting processing efficiency with higher, but must be loaded using Double Tops point when processing, and need to guarantee front and back The position precision of top common axis and the radial Milling Machining dynamic tool apron centre of gyration.However current existing turning-milling complex processing The position degree of top common axis and the radial Milling Machining dynamic tool apron centre of gyration is unable to satisfy above-mentioned part zero before and after center The process requirements of part not only will affect part processing quality if processed using existing equipment, can also cause part sometimes Do over again or scrap.Therefore in current actual production process, in order to guarantee the machining accuracy of part, it has to by above-mentioned zero The turning-milling complex processing of part needs to carry out accurate centering ability by finishing processing and the common completion of finish-milling processing, and before finish-milling processing It completes, not only significantly reduces production efficiency in this way, and increase the skill requirement to operator, while also reducing life The flexibility arranged is produced, causes above-mentioned part that can only be confined to be processed on individual lathes.It is vertical that Fig. 1 show existing tail centre Body structural schematic diagram.
By literature search, the country there is no a kind of radially adjustable lathe tail centre of precision.
Utility model content
The purpose of this utility model is that in place of making up the deficiencies in the prior art, provide one kind be able to carry out it is accurate it is radial can The lathe tail centre of tune, to improve top common axis and radial Milling Machining power before and after numerical-control turn-milling Compositions of metal-working machines The position precision of cutter head further increases machine tooling range, improves part processing precision.
The purpose of this utility model is realized by following technological means:
A kind of adjustable dead center of precision, it is characterised in that: including fixing axle, centering ring, adjustment seat, attachment base, axis It holds, spring, gland and tail centre, the left side of fixing axle coaxially produce the taper shank for connecting with lathe, the right end of fixing axle Outside connect centering ring, screw connection adjustment seat, the left side of adjustment seat and fixing axle are adjusted by bulb inside centering ring Right side connection, be co-axially mounted attachment base in adjustment seat, spring be set between the left side and adjustment seat of the attachment base, connect The right side of seat is co-axially mounted bearing, and gland is coaxially mounted to the outside of adjustment seat, and the tail portion of tail centre is coaxially installed on gland In attachment base, the tip of tail centre is located at the outside of gland.
Moreover, the fixing axle is made of axis body and taper shank, the left side of axis body is co-axially mounted taper shank, which is used for It is connected with tailstock tool;Multiple adjustment seat installation via holes are along the circumferential direction uniformly produced on axis body, which installs via hole and use It need to guarantee the positioning surface fitting corresponding to adjustment seat of adjustment seat mounting surface when installation and adjustment seat, installation;The right side of axis body is to adjust Seat mounting surface is saved, adjustment seat mounting surface center processes a seam allowance to guarantee its flatness with higher;On the side wall of axis body Cloth produces multiple centering ring installation screws, which plays radial direction with centering ring for fixing centering ring jointly Finely tune the effect of adjustment seat.
Moreover, described taper shank is No. 4 installation taper shanks of Mohs.
Moreover, the centering ring is annular shape, multiple centering ring installation via holes, the centering ring are uniformly produced on side wall Installation via hole is for being connected and fixed axis and centering ring;Multiple adjusting threaded holes, the adjusting are also uniformly produced on the side wall of centering ring Threaded hole adjusts screw for installing bulb, plays the role of radial fine tuning adjustment seat.
Moreover, the left side of the adjustment seat is adjustment seat positioning surface, multiple tune are uniformly produced in the left side of adjustment seat Seat installation screw is saved, is connected between adjustment seat and fixing axle by adjustment seat installation screw, guarantee adjustment seat positioning surface when connection It is sturdy with the adjustment seat mounting surface in fixing axle;Adjustment seat positioning surface center processes a seam allowance to guarantee its plane with higher Degree;It is that centering ring adjusts face on the outside of the left end of adjustment seat;
An attachment base mounting hole is coaxially produced in the right side of adjustment seat, and attachment base mounting hole is for installing attachment base, and two Radial fit gap is not more than 0.003mm between person;The inner face of attachment base mounting hole is spring positioning face, the spring positioning face For installing spring, when installation, guarantees that spring end face is sturdy with it;Adjustment seat fastening thread is produced on the outside of the right end of attachment base, it should Adjustment seat fastening thread plays the role of being fastenedly connected seat for installing gland.
Moreover, the attachment base is fitted into adjustment seat, the left part of attachment base main body is cylindrical shape, the cylindrical body Left side is that attachment base positions end face, and the periphery of the cylindrical body is that attachment base positions outer circle, the positioning outer circle and adjustment seat phase Inner hole is answered, fit clearance is not more than 0.003mm between the two, guarantees attachment base positioning end face and spring corresponding end-faces when installation Sturdy, spring primarily serves the effect for holding out against attachment base;Between attachment base and adjustment seat by gland by fine thread connect into Row fastening is played the role of adjusting spring top clamping power by tightening gland and is fastenedly connected seat;
A circular groove is coaxially produced in the right side of attachment base, and the inner face of the groove is bearing mounting surface, for convenient for Axial fine tuning is realized to attachment base, axial needle bearing is installed in bearing mounting surface, gland by compress axial needle bearing come Realize the accurate conversion between radial force and axial force;
A tail centre installation taper hole is coaxially produced in the axle center of the right side of attachment base, and tail centre installation taper hole is mainly used In installation tail centre, guarantee the radial trimming precision of tail centre by realizing radial fine tuning to adjustment seat and attachment base.
Moreover, the spring is mounted in the attachment base mounting hole of adjustment seat, the left and right ends of spring press against respectively On the spring positioning face of adjustment seat and the attachment base positioning end face of attachment base.
Moreover, the gland is coaxially mounted to the outside of adjustment seat, and with adjustment seat made on the outside of adjustment seat right end Fastening thread connection, the mounting hole for installing tail centre is coaxially produced in the axle center of gland.
Moreover, the tail centre is inserted into the mounting hole of gland and the tail centre installation taper hole of attachment base.
The advantages and positive effects of the utility model are as follows:
The utility model mentality of designing is ingenious, has novelty, by designing a kind of adjustable dead center of precision, improves The part range of work of position precision and turn-milling complex machining center before and after lathe between top common axis and tool apron, is protected Product quality has been demonstrate,proved, while part processing efficiency can also be promoted, there is promotional value.
In addition, being provided simultaneously with the adjustable advantage of axial pressure since this is top, it is also applied to other general NCs On lathe, the uncontrollable disadvantage of numerically controlled lathe tail centre pressure, the range of work of further expansion part can solve.
Detailed description of the invention
Fig. 1 is existing tail centre schematic perspective view;
Fig. 2 is accurate radially adjustable tail centre schematic perspective view;
Fig. 3 is fixing axle schematic perspective view;
Fig. 4 is centering ring schematic perspective view;
Fig. 5 is adjustment seat schematic perspective view;A is left side schematic diagram, and b is right side schematic diagram;
Fig. 6 is attachment base stereoscopic schematic diagram;A is left side schematic diagram, and b is right side schematic diagram;
Fig. 7 is bearing schematic perspective view;
Fig. 8 is that attachment base with bearing connect schematic perspective view;
Fig. 9 is assembly schematic perspective view one;
Figure 10 is assembly schematic perspective view two;
Figure 11 is accurate adjustable tail centre general assembly schematic perspective view.
Specific embodiment
Embodiment of the utility model will be described in detail below with reference to the attached drawings, it should be noted that the present embodiment is narrative , it is not restrictive, protection scope of this utility model cannot be limited by this.
A kind of adjustable dead center of precision, including fixing axle 1, centering ring 2, adjustment seat 3, attachment base 18, bearing 23, bullet Spring 24, gland 4 and tail centre 5, Fig. 2 show schematic device.It coaxially produces for being connect with lathe the left side of fixing axle Taper shank, the outside of the right end of fixing axle connects centering ring, adjusts screw by bulb inside centering ring and connect adjustment seat, adjusting The left side of seat and the right side of fixing axle connect, and are co-axially mounted attachment base in adjustment seat, the left side of the attachment base and adjusting Spring is set between seat, the right side of attachment base is co-axially mounted bearing, and gland is coaxially mounted to the outside of adjustment seat, tail centre Tail portion is coaxially installed in gland and attachment base, and the tip of tail centre is located at the outside of gland.
Fixing axle is mainly used for connecting machine tool, centering ring and adjustment seat, while playing radial fine tuning jointly with centering ring and adjusting Save the effect of seat.Adjustment seat and fixed axis connection, while playing fixed and Precision trimming jointly with gland, bearing, spring and connecting The effect of seat, wherein spring plays the role of holding out against attachment base, and bearing plays accurate conversion between radial force axial force.Even Joint chair is mainly used for installing tail centre, passes through the final radial Precision trimming for realizing tail centre of radial fine tuning of adjustment seat.Simultaneously The precision component that the device can also make pressure be applicable in various different structures by replacing different elastic springs, and not by heat expansion The influence of shrinkage keeps pressure consistent at any time.It is described below in conjunction with specific structure of the attached drawing to each component:
(1), fixing axle
Fig. 3 show fixing axle schematic perspective view, is mainly used for connecting machine tool, centering ring and adjustment seat.It is fixed Axis is made of axis body and taper shank 6, and the left side of axis body is co-axially mounted taper shank, which is No. 4 installation taper shanks of Mohs, the Mohs 4 Number installation taper shank with tailstock tool for being connected, coupling stiffness with higher.It is along the circumferential direction uniformly produced on axis body multiple Adjustment seat installs via hole 7, is three in the present embodiment, which is used for installation and adjustment seat, and when installation needs Guarantee the positioning surface fitting corresponding to adjustment seat of adjustment seat mounting surface.The right side of axis body is adjustment seat mounting surface 8, radial to guarantee Degree of regulation, adjustment seat mounting surface center process a seam allowance to guarantee its flatness with higher, while need to guarantee the face with The vertical precision of the taper shank centre of gyration is installed.Multiple centering ring installation screws 9 are uniformly produced on the side wall of axis body, in the present embodiment It is three, which plays the work of radial fine tuning adjustment seat with centering ring for fixing centering ring jointly With.
(2), centering ring
Fig. 4 show centering ring schematic perspective view, which is connected with fixing axle, primarily serves radial fine tuning and adjusts Save the effect of seat.Centering ring is annular shape, and multiple centering ring installation via holes 10 are uniformly produced on side wall, are three in the present embodiment A, three centering ring installation via holes are for being connected and fixed axis and centering ring.Multiple tune are also uniformly produced on the side wall of centering ring Threaded hole 11 is saved, is eight in the present embodiment, this eight adjusting threaded holes adjust screw for installing bulb, play radial fine tuning The effect of adjustment seat.
(3), adjustment seat
Fig. 5 show adjustment seat schematic perspective view, the part and fixed axis connection, at the same with gland, bearing and Spring plays the role of fixed and Precision trimming attachment base jointly.The left side of adjustment seat is adjustment seat positioning surface 13, adjustment seat Left side uniformly produce multiple adjustment seat installation screws 12, connected between adjustment seat and fixing axle by adjustment seat installation screw It connects, guarantees that adjustment seat positioning surface and the adjustment seat mounting surface in fixing axle are sturdy when connection.To guarantee radiai adjustment precision, adjust Seat positioning surface center processes a seam allowance to guarantee its flatness with higher.It is that centering ring adjusts face on the outside of the left end of adjustment seat 14。
An attachment base mounting hole 16 is coaxially produced in the right side of adjustment seat, and attachment base mounting hole is used to install attachment base, Radial fit gap is not more than 0.003mm between the two, and the hole and the verticality of adjustment seat positioning surface are more demanding.Attachment base The inner face of mounting hole is spring positioning face 17, and for installing spring, when installation guarantees spring end face and its in the spring positioning face It is sturdy.Adjustment seat fastening thread 15 is produced on the outside of the right end of attachment base, which plays tight for installing gland The effect of connected joint chair.
(4), attachment base
Attachment base is fitted into adjustment seat, and the left part of attachment base main body is cylindrical shape, and the left side of the cylindrical body is to connect Joint chair positions end face 19, and the periphery of the cylindrical body is that attachment base positions outer circle 20, the positioning outer circle and adjustment seat respective interior bores (attachment base mounting hole) cooperation, fit clearance is not more than 0.003mm between the two, guarantees attachment base positioning end face and spring when installation Corresponding end-faces are sturdy, and spring primarily serves the effect for holding out against attachment base.Closely-pitched spiral shell is passed through by gland between attachment base and adjustment seat Line connection is fastened, and is played the role of adjusting spring top clamping power by tightening gland and is fastenedly connected seat.
A circular groove is coaxially produced in the right side of attachment base, and the inner face of the groove is bearing mounting surface 22, for just In realizing axial fine tuning to attachment base, axial needle bearing 23 is installed in bearing mounting surface, gland is by compressing axial needle roller axis It holds to realize the accurate conversion between radial force and axial force, Fig. 7 show axial needle bearing schematic perspective view, Fig. 8 It show bearing and attachment base connection schematic diagram.
A tail centre installation taper hole 21 is coaxially produced in the axle center of the right side of attachment base, and it is main which installs taper hole For installing tail centre, guarantee the radial trimming precision of tail centre by realizing radial fine tuning to adjustment seat and attachment base.
(5), spring
Spring is mounted in the attachment base mounting hole of adjustment seat.The left and right ends of spring press against the spring of adjustment seat respectively The attachment base of positioning surface and attachment base positions on end face.
(6), gland
Gland is coaxially mounted to the outside of adjustment seat, and connects with adjustment seat fastening thread made on the outside of adjustment seat right end It connects.Coaxially produce the mounting hole 25 for installing tail centre in the axle center of gland.
(7), tail centre
Tail centre is inserted into the mounting hole of gland and the tail centre installation taper hole of attachment base.
The workflow of the present apparatus are as follows:
(1), fixing axle and centering ring are linked together using screw first, and connected adjustment seat and fixing axle with screw It is connected together, is packed into centering screw, as shown in Figure 9.
(2) spring, is packed into adjustment seat respective interior bores, guarantees that lower end diaphragm flexures and adjustment seat bottom surface are sturdy, the company of being then charged into Joint chair guarantees that its bottom surface and spring upper end face paste are real, axial bearing is packed into attachment base upper surface later, using gland compression axis Corresponding end-faces are held, as shown in Figure 10.
(3), tail centre is fitted into attachment base, guarantees that cone match is good between the two;Fixing axle is packed into lathe tail later In seat, guarantee that cone match is good between the two, as shown in figure 11.
(4), centering stick is packed between Double Tops point, by drawing table to determine the position between the top common axis in front and back and tool apron Precision slightly unclamps the mounting screw between fixing axle and adjustment seat later, is carried out by eight adjusting screws to tail centre accurate Radial fine tuning, the final position precision improved between the top public axial direction in front and back and tool apron, and tighten between fixing axle and adjustment seat Mounting screw guarantees that connection is reliable between the two, finally installs the turning-milling complex processing that part completes part.

Claims (9)

1. a kind of adjustable dead center of precision, it is characterised in that: including fixing axle, centering ring, adjustment seat, attachment base, bearing, The taper shank for connecting with lathe is coaxially produced in spring, gland and tail centre, the left side of fixing axle, the right end of fixing axle it is outer Side connects centering ring, adjusts screw by bulb inside centering ring and connects adjustment seat, the left side of adjustment seat and the right side of fixing axle End face connects, and is co-axially mounted attachment base in adjustment seat, spring is arranged between the left side and adjustment seat of the attachment base, attachment base Right side is co-axially mounted bearing, and gland is coaxially mounted to the outside of adjustment seat, and the tail portion of tail centre is coaxially installed on gland and company In joint chair, the tip of tail centre is located at the outside of gland.
2. a kind of adjustable dead center of precision according to claim 1, it is characterised in that: the fixing axle is by axis body It is constituted with taper shank, the left side of axis body is co-axially mounted taper shank, and the taper shank with tailstock tool for being connected;On axis body along the circumferential direction Uniformly produce multiple adjustment seats installation via holes, which installs via hole and be used for installation and adjustment seat, and when installation need to guarantee adjustment seat Mounting surface positioning surface fitting corresponding to adjustment seat;The right side of axis body is adjustment seat mounting surface, the processing of adjustment seat mounting surface center One seam allowance is to guarantee its flatness with higher;Multiple centering ring installation screws, the centering are uniformly produced on the side wall of axis body Ring installation screw plays the role of radial fine tuning adjustment seat for fixing centering ring, with centering ring jointly.
3. a kind of adjustable dead center of precision according to claim 2, it is characterised in that: described taper shank is Mohs No. 4 installation taper shanks.
4. a kind of adjustable dead center of precision according to claim 1, it is characterised in that: the centering ring is annulus Shape uniformly produces multiple centering rings installation via holes on side wall, and centering ring installation via hole is for being connected and fixed axis and centering ring; Multiple adjusting threaded holes are also uniformly produced on the side wall of centering ring, which adjusts screw for installing bulb, plays The effect of radial fine tuning adjustment seat.
5. a kind of adjustable dead center of precision according to claim 1, it is characterised in that: the left end of the adjustment seat Face is adjustment seat positioning surface, and multiple adjustment seat installation screws are uniformly produced in the left side of adjustment seat, between adjustment seat and fixing axle It is connected by adjustment seat installation screw, guarantees that adjustment seat positioning surface and the adjustment seat mounting surface in fixing axle are sturdy when connection;It adjusts It saves seat positioning surface center and processes a seam allowance to guarantee its flatness with higher;It is that centering ring is adjusted on the outside of the left end of adjustment seat Face;
An attachment base mounting hole is coaxially produced in the right side of adjustment seat, attachment base mounting hole for installing attachment base, the two it Between radial fit gap be not more than 0.003mm;The inner face of attachment base mounting hole is spring positioning face, which is used for Spring is installed, guarantees that spring end face is sturdy with it when installation;Adjustment seat fastening thread is produced on the outside of the right end of attachment base, the adjusting Seat fastening thread plays the role of being fastenedly connected seat for installing gland.
6. a kind of adjustable dead center of precision according to claim 1, it is characterised in that: the attachment base, which is packed into, to be adjusted It saves in seat, the left part of attachment base main body is cylindrical shape, and the left side of the cylindrical body is that attachment base positions end face, the cylindrical body Periphery be that attachment base positions outer circle, the positioning outer circle and adjustment seat respective interior bores cooperate, and fit clearance is not more than between the two 0.003mm guarantees that attachment base positioning end face and spring corresponding end-faces are sturdy when installation, and spring primarily serves the work for holding out against attachment base With;It is fastened by gland by fine thread connection between attachment base and adjustment seat, plays adjustment spring by tightening gland Pressure and the effect for being fastenedly connected seat;
A circular groove is coaxially produced in the right side of attachment base, and the inner face of the groove is bearing mounting surface, for convenient for even Joint chair realizes axial fine tuning, installs axial needle bearing in bearing mounting surface, gland is realized by compressing axial needle bearing Accurate conversion between radial force and axial force;
A tail centre installation taper hole is coaxially produced in the axle center of the right side of attachment base, and tail centre installation taper hole is mainly used for pacifying Tail centre is filled, guarantees the radial trimming precision of tail centre by realizing radial fine tuning to adjustment seat and attachment base.
7. a kind of adjustable dead center of precision according to claim 1, it is characterised in that: the spring is mounted on tune In the attachment base mounting hole for saving seat, the left and right ends of spring press against spring positioning face and the connection of attachment base of adjustment seat respectively On seat positioning end face.
8. a kind of adjustable dead center of precision according to claim 1, it is characterised in that: the gland is co-axially mounted It is connect in the outside of adjustment seat, and with adjustment seat fastening thread made on the outside of adjustment seat right end, the axle center of gland is coaxially produced For installing the mounting hole of tail centre.
9. a kind of adjustable dead center of precision according to claim 1, it is characterised in that: the tail centre is inserted into In the mounting hole of gland and the tail centre installation taper hole of attachment base.
CN201822036086.XU 2018-12-04 2018-12-04 A kind of adjustable dead center of precision Active CN209379938U (en)

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CN201822036086.XU CN209379938U (en) 2018-12-04 2018-12-04 A kind of adjustable dead center of precision

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Application Number Priority Date Filing Date Title
CN201822036086.XU CN209379938U (en) 2018-12-04 2018-12-04 A kind of adjustable dead center of precision

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112139852A (en) * 2020-09-24 2020-12-29 成都齐平科技有限公司 Method for centering replaceable head cutter head
CN112139852B (en) * 2020-09-24 2022-08-02 成都齐平科技有限公司 Method for centering replaceable head cutter head

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112139852A (en) * 2020-09-24 2020-12-29 成都齐平科技有限公司 Method for centering replaceable head cutter head
CN112139852B (en) * 2020-09-24 2022-08-02 成都齐平科技有限公司 Method for centering replaceable head cutter head

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