CN208004813U - It is a kind of activity before it is top - Google Patents

It is a kind of activity before it is top Download PDF

Info

Publication number
CN208004813U
CN208004813U CN201820369901.1U CN201820369901U CN208004813U CN 208004813 U CN208004813 U CN 208004813U CN 201820369901 U CN201820369901 U CN 201820369901U CN 208004813 U CN208004813 U CN 208004813U
Authority
CN
China
Prior art keywords
workpiece
main body
positioning sleeve
taper shank
thrust nut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201820369901.1U
Other languages
Chinese (zh)
Inventor
林志冲
聂志杏
Original Assignee
林志冲
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 林志冲 filed Critical 林志冲
Priority to CN201820369901.1U priority Critical patent/CN208004813U/en
Application granted granted Critical
Publication of CN208004813U publication Critical patent/CN208004813U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses top before a kind of activity, including the taper shank main body of coaxial arrangement, movable mandril, spring, Thrust nut and positioning sleeve;The tapered end of taper shank main body is spirally connected with Thrust nut, and the other end is spirally connected with positioning sleeve;Movable mandril is mounted in taper shank main body, and center point stretches out workpiece positioning sleeve and contacted with workpiece, and the other end is connect by spring with Thrust nut.It is top before the activity of the utility model, it need to be matched with the tailstock centre of lathe, when work pieces process is completed, tailstock centre only need to be unclamped, workpiece can be unloaded down, continue to process in the not parking workpiece that can install immediately, both it saved non-cutting time, improved production efficiency, and in turn ensured the positioning accuracy of workpiece, improve the machining accuracy of workpiece, for fixture using simplicity, practical performance is strong.

Description

It is a kind of activity before it is top
Technical field
The utility model is related to lathe accessorieies, and in particular to top before a kind of activity for lathe.
Background technology
In turnery processing, for there is the finish turning of the small shafts part of concentricity requirement to process, usually using two tops Sharp clamping is completed to process, but two traditional top installation way exist as following drawbacks:1, top before the advance vehicle system of needs.2, it needs It installs heart carrier for bolt additional and workpiece rotation is driven with passing power.3, workpiece loading and unloading needs to shut down.4, it is such as processed on numerically controlled lathe, by workpiece The influence of center hole size, can cause to position inaccurate, influence the control of length dimension.In conclusion traditional two are top Not only non-cutting time is long for installation way, low production efficiency, while can also influence size Control.
Utility model content
In view of the above-mentioned problems, the utility model aim be to provide it is a kind of activity before it is top, can effectively shorten non-cutting time, Production efficiency is improved, ensures machining accuracy.
To achieve the above object, the technical solution of the utility model is:
It is top before a kind of activity, including the taper shank main body of coaxial arrangement, movable mandril, spring, Thrust nut and positioning sleeve; The tapered end of taper shank main body is spirally connected with Thrust nut, and the other end is spirally connected with positioning sleeve;Movable mandril is movably set in taper shank main body, The top tip part of movable mandril one end is contacted across positioning sleeve with workpiece center hole, and spring pocket is in the movable mandril other end and and thrust Nut connects.
It is top before the activity of the utility model, the Mohs conical section of taper shank main body is squeezed into tapered bore of machine tool spindle when use (mohs tapered bore) coordinates, and realizes that self-centering clamping, when clamping workpiece need to be matched with the tailstock centre of lathe, during both ends are equipped with Mandril is top contacts with activity for finishing workpiece one end centre bore that waits in heart hole, and the other end is contacted with tailstock centre, and tailstock adjusts Suitable position fastens, shake barrel of tail stock from tailstock centre by part top to taper shank main direction, make workpiece the other end face with Positioning sleeve end face close contact, locks barrel of tail stock after holding out against, movable mandril under the action of the spring has part axial certain Anti- pushing force realizes workpiece self-centering under two top effects, automatic positioning is realized under the action of positioning sleeve end face, and lean on The frictional force of end face contact surface drives workpiece rotation, realizes turnery processing.Barrel of tail stock locking pressure need to be only unclamped when dismantling workpiece Block exits tailstock centre, and workpiece can voluntarily be fallen, install workpiece when by workpiece both ends centre bore be respectively aligned to tailstock centre and Movable mandril is top, shakes barrel of tail stock, and top tight workpiece locks barrel of tail stock, to realize not parking processing.
As a kind of improvement of the utility model, the positioning sleeve can be matched according to the size of diameter of work, end Face, which can realize workpiece positioning and provide frictional force, drives workpiece rotation, center to be equipped with through-hole and coordinate with movable mandril small―gap suture, institute One end clearance fit of the Thrust nut equipped with axis hole with movable mandril is stated, certain guiding, centering and supporting role can be played.
Compared with prior art, the beneficial effects of the utility model are:
It is top before the activity of the utility model, it realizes when work pieces process is completed, only need to unclamp tail portion rolling center, just Workpiece can be unloaded down, continue to process in the not parking workpiece that can install immediately, both saved non-cutting time, improved production effect Rate in turn ensures the positioning accuracy of workpiece, improves the machining accuracy of workpiece, and for fixture using simplicity, practical performance is strong.
Description of the drawings
Fig. 1 is structural schematic diagram top before the utility model activity;
Fig. 2 is the schematic diagram of top clamping workpiece before the utility model activity;
Reference sign:1- taper shank main bodys;2- activity mandrils;3- springs;4- Thrust nuts;5- positioning sleeves;6- lathes Main shaft mohs tapered bore;7- workpiece;8- tailstock centres.
Specific implementation mode
The content of the utility model is described in further details with reference to the accompanying drawings and detailed description.
Embodiment:
It please refers to shown in Fig. 1 and Fig. 2, it is top before a kind of activity of the present embodiment, including the taper shank main body 1 of coaxial arrangement, Movable mandril 2, spring 3, Thrust nut 4 and positioning sleeve 5.The tapered end of taper shank main body 1 is spirally connected with Thrust nut 4, the other end with it is fixed Position set 5 is spirally connected;The aperture small―gap suture of 2 right end shaft of movable mandril and taper shank main body 1 coordinates, top stretchings workpiece positioning sleeve 5 and Workpiece 7 contacts, the axis hole clearance fit of movable mandril 2 left end shaft and Thrust nut 4, and is slided by spring 3 and Thrust nut 4 Dynamic connection.2 one end of movable mandril is sleeved in taper shank main body 1, and one end is sleeved in the axis hole of Thrust nut 4, can be played centering and be led To effect, it is not easy partially.Positioning sleeve 5 can be matched according to the size of diameter of work, and end face can realize workpiece positioning and provide Frictional force drives workpiece 7 to rotate, and 5 center of positioning sleeve is equipped with through-hole and coordinates with 2 small―gap suture of movable mandril.
It is top before the activity of the utility model, it needs to match with the tailstock centre 8 of lathe in clamping workpiece, clamping work When part, with the Mohs cone of machine tool chief axis mohs tapered bore 6 and taper shank main body 1, self-centering and the folder of taper shank main body 1 are realized Tightly, movable mandril 2 is from 3 thrust top of spring to workpiece 7, one end of workpiece 7 pass through after the centering positioning of movable mandril 2 with positioning sleeve 5 end faces contact, and the friction by contact surface drives workpiece 7 to rotate, and the other end of workpiece 7 is then held out against by tailstock centre 8, in lathe master Workpiece 7 can be mounted in two top by axis in the case of not stopping operating, and realize not parking processing.Positioning sleeve 5 and taper shank main body 1 Screw-thread fit is conveniently replaceable, and to adapt to the workpiece 7 of different size, ensures maximized contact friction, and realize the accurate of workpiece Positioning.
Above-listed detailed description is illustrating for the utility model possible embodiments, which is not to limit The scope of protection of the utility model, all equivalence enforcements or change without departing from carried out by the utility model are intended to be limited solely by this case In protection domain.

Claims (2)

1. top before a kind of activity, which is characterized in that taper shank main body (1), movable mandril (2) including coaxial arrangement, spring (3), Thrust nut (4) and positioning sleeve (5);The tapered end of taper shank main body (1) is spirally connected with Thrust nut (4), the other end and positioning sleeve (5) it is spirally connected;Movable mandril (2) is movably set in taper shank main body (1), and the top tip part of movable mandril (2) one end passes through positioning sleeve (5) it is contacted with workpiece center hole, spring (3) is sleeved on movable mandril (2) other end and is connect with Thrust nut (4).
2. it is according to claim 1 activity before it is top, which is characterized in that the Thrust nut (4) be equipped with axis hole, and with work Dynamic mandril (2) clearance fit.
CN201820369901.1U 2018-03-16 2018-03-16 It is a kind of activity before it is top Expired - Fee Related CN208004813U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820369901.1U CN208004813U (en) 2018-03-16 2018-03-16 It is a kind of activity before it is top

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820369901.1U CN208004813U (en) 2018-03-16 2018-03-16 It is a kind of activity before it is top

Publications (1)

Publication Number Publication Date
CN208004813U true CN208004813U (en) 2018-10-26

Family

ID=63889491

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820369901.1U Expired - Fee Related CN208004813U (en) 2018-03-16 2018-03-16 It is a kind of activity before it is top

Country Status (1)

Country Link
CN (1) CN208004813U (en)

Similar Documents

Publication Publication Date Title
CN201102149Y (en) Turning clamper
CN202097409U (en) No-stop self-centering clamping chunk used for processing slender shaft part
CN201862802U (en) Inner expansion type positioning clamp
CN204747550U (en) Automobile -used anchor clamps of star gear in car constant velocity cardan joint
CN203751800U (en) Machining device directly clamping threaded surface without damaging thread
CN206066023U (en) A kind of Self-centering device of clamping thin-wall workpiece
CN206296483U (en) A kind of expansion set mandrel device connected by transition disc
CN203887254U (en) Cylindrical lathe turning, radial facing and cylindrical grinding fixture for shaft sleeves
CN203751746U (en) Double-end flexible ball fixture capable of transmitting torque
CN201960390U (en) Clamp for turning bottle jack of gas holder through numerically controlled horizontal lathe
CN208004813U (en) It is a kind of activity before it is top
CN202240608U (en) Hard turning external-circle clamp for besides-star wheel
CN201151069Y (en) Clamper for grinding taper hole of lathe spindle
CN203003166U (en) Combined centre
CN204954619U (en) Bearing inner race cylindrical grinding fixture device
CN104551020B (en) central hole processing lathe
CN203526737U (en) Self-tapping mechanism of lathe
CN201147891Y (en) Highly effective clamping structure for round orifice on grinding steel ball
CN201150994Y (en) Floating front center of lathe
CN203184681U (en) Three-jaw centrifugal force self-centering chuck
CN206200139U (en) A kind of Crankshaft Machining special purpose lathe by ordinary lathe
CN204338879U (en) Centre bore lathe for machining
CN203875363U (en) Chuck for lathe tailstock
CN105773254A (en) Turning fixture for no-stop workpiece clamping
CN104440173A (en) Lathe tailstock clamp

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20181026

Termination date: 20210316

CF01 Termination of patent right due to non-payment of annual fee