CN110052871A - A kind of rotational workpieces flexible drive fixture - Google Patents
A kind of rotational workpieces flexible drive fixture Download PDFInfo
- Publication number
- CN110052871A CN110052871A CN201910412482.4A CN201910412482A CN110052871A CN 110052871 A CN110052871 A CN 110052871A CN 201910412482 A CN201910412482 A CN 201910412482A CN 110052871 A CN110052871 A CN 110052871A
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- China
- Prior art keywords
- flexible
- chuck
- connection
- flexible connection
- jointing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
The present invention relates to a kind of rotational workpieces flexible drive fixtures, including swivel base and flexible chuck；Swivel base is mounted on machine tool chief axis and is coaxially freely rotated relative to machine tool chief axis, and flexible chuck is mounted on swivel base by flexible jointing-rod, and flexible connection spring is cased on flexible jointing-rod.The beneficial effects of the present invention are: using flexible jointing-rod, flexible connection hole and the structure for being flexibly connected spring, realize that the flexible of rotational workpieces fixes, it can guarantee the precision and quality of machining to avoid the stress and flexible deformation generated in the clamping process of column workpiece.The defects of deviation from circular from is excessive, taper error is excessive, cylindricity error is excessive when can eliminate column workpiece finishing, finished surface generates shake line and walks knife mark, is remarkably improved the structure precision and finish of workpiece.
Description
Technical field
The invention belongs to mechanical rotating actuator more particularly to a kind of rotational workpieces flexible drive fixtures.
Background technique
In the process of column workpiece, common processing method is using fixture (usually chuck) clamping workpiece
One end, the other end of workpiece is by top support, but the axis of the chucking power of fixture and top center line do not ensure that standard
True coaxial state, can make workpiece fixture and it is top between generate certain radial stress, in high-precision process
It will affect processing quality, deviation from circular from is excessive after there is workpiece finishing, and taper is excessive after work pieces process, and cylindricity is excessive, adds
Work surface shake line walks the problem of knife mark etc. significantly affects finish.Improved method is to support workpiece using the fixture rotated freely,
It is fastened on workpiece with clip, stirring clip by driver plate makes workpiece rotation；It, cannot be using artificial but on automatic production line
Clip is mounted and dismounted for each workpiece, needs the chuck using the setting fixing workpiece on fixture, stirring chuck by driver plate makes
Workpiece rotation.In being loaded in mode for this workpiece, chuck can also generate additional effect to workpiece in the colleague for fixing workpiece
Power can make workpiece generate internal stress or flexible deformation, work pieces process is after the completion in internal stress including radial and axial active force
Or be deformed under the action of elasticity recovery, the processing quality of workpiece is influenced, is especially influenced in the process of diameter processing especially bright
It is aobvious.
Summary of the invention
The purpose of the present invention is to propose to a kind of technical solution of rotational workpieces flexible drive fixture, adding because of fixture is avoided
Active force influences machining accuracy.
To achieve the goals above, the technical scheme is that a kind of rotational workpieces flexible drive fixture, is used in machine
Be loaded the workpiece of rotation on bed, including swivel base and flexible chuck；The swivel base is mounted on machine tool chief axis simultaneously opposite
It is coaxially freely rotated in machine tool chief axis, the flexibility chuck is mounted on the swivel base by flexible jointing-rod, described soft
Property connecting rod on be cased with flexible connection spring, one end press of the flexible connection spring flexible chuck, it is described it is flexible even
The other end for connecing spring presses the swivel base.
Further, in order to be stably installed at flexible chuck on swivel base, the flexibility chuck is soft by more
Property connecting rod be mounted on the swivel base, the axis equal part point of more flexible jointing-rods around the flexible chuck
Cloth.
Further, in order to realize the flexible connection effect of flexible chuck, the swivel base is equipped with flexible connection hole, institute
Flexible jointing-rod is stated across the flexible connection hole, the flexible jointing-rod is equipped with lock in the end for being pierced by the flexible connection hole
Determine nut and end washer, the flexible jointing-rod is fixedly connected with the flexible chuck.
Further, it in order to obtain good flexible connection effect, is equipped in the flexible connection hole with the flexibility even
The two sides on the connection edge of extension bar cooperation, the connection edge are the taper holes expanded outwardly.
Further, a kind of structure in preferable flexible connection hole is that the side on the connection edge is that taper hole is expanded in outside,
The taper of the outside expansion taper hole is 1:8, and the length of the outside expansion taper hole is the 0.77 of the flexible connection hole length
Times, 55 ° of transition chamfering is equipped between the outside expansion taper hole and the connection edge；The other side on the connection edge is inside
Taper hole is expanded, the taper of the inside expansion taper hole is 1:1.66, and the length of the inside expansion taper hole is the flexible connection
0.23 times of hole length；The inside expansion taper hole is relative to the flexible connection spring.
Further, in order to make fixture smooth running and facilitate maintenance, the swivel base is equipped with flexible connecting sleeve, described
Flexible connecting sleeve includes flexible connection housing and flexible connection inner sleeve, and the flexible connection hole is arranged in the flexible connection inner sleeve
In, it is set in the flexible connection in the flexible connection housing, the flexible connection housing is the soft of high-hardness
Property connection housing, the flexible connection inner sleeve is flexible connection inner sleeve made of copper.
Further, the machine tool chief axis is equipped with driver plate, and the flexibility chuck is equipped with drive block, and the driver plate passes through driving
Block stirs flexible card disc spins.
Further, in order to steadily fix workpiece, the flexibility chuck is equipped with the claw of at least three clamping workpieces.
The beneficial effects of the present invention are: being realized using flexible jointing-rod, flexible connection hole and the structure for being flexibly connected spring
The flexible of rotational workpieces fixes, and can guarantee machine to avoid the stress and flexible deformation generated in the clamping process of column workpiece
The precision and quality of tool processing.Deviation from circular from is excessive, taper error is excessive when can eliminate column workpiece finishing, cylindricity is missed
The defects of difference is excessive, finished surface generates shake line and walks knife mark, is remarkably improved the structure precision and finish of workpiece, reduces and adds
Light-knife number is walked during work, improves processing efficiency and one-pass finished qualification rate.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Detailed description of the invention
Fig. 1 is main view of the present invention；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 is the B partial enlarged view of Fig. 2, shows the structure of flexible connecting sleeve and flexible jointing-rod；
Fig. 4 is working state schematic representation of the invention；
Fig. 5 is functional schematic of the invention.
Specific embodiment
Such as Fig. 1 to Fig. 5, a kind of rotational workpieces flexible drive fixture, for the workpiece for the rotation that is loaded on lathe, including rotation
Turn chassis 10 and flexible chuck 20；The swivel base is mounted on machine tool chief axis 60 and coaxially freely turns relative to machine tool chief axis
Dynamic, the flexibility chuck is mounted on the swivel base by flexible jointing-rod 30, is covered on the flexible jointing-rod flexible
Connecting spring 32, one end press of the flexible connection spring flexible chuck, the other end top of the flexible connection spring
Press the swivel base.
The flexibility chuck is mounted on the swivel base by more flexible jointing-rods, the more flexible jointing-rods
Point distributions such as the axis around the flexible chuck.
The swivel base is equipped with flexible connection hole 40, and the flexible jointing-rod passes through the flexible connection hole, described soft
Property connecting rod be pierced by it is described flexible connection hole end be equipped with lock nut 33 and end washer 34, the flexible jointing-rod with
The flexibility chuck is fixedly connected.
The connection cooperated with the flexible jointing-rod is equipped in the flexible connection hole along 43, the two sides on the connection edge are
The taper hole expanded outwardly.
The side on the connection edge is that taper hole 44 is expanded in outside, and the taper of the outside expansion taper hole is 1:8, the outside
The length of expansion taper hole is 0.77 times of the flexible connection hole length, and the outside expansion taper hole and the connection are set between
There is 55 ° of transition chamfering α；The other side on the connection edge is that taper hole 45 is expanded in inside, and the taper of the inside expansion taper hole is
1:1.66, the length of the inside expansion taper hole are 0.23 times of the flexible connection hole length；Expand taper hole phase in the inside
For the flexible connection spring.
The swivel base is equipped with flexible connecting sleeve, and the flexible connecting sleeve includes flexible connection housing 41 and flexible connection
Inner sleeve 42, the flexible connection hole are arranged in the flexible connection inner sleeve, and the flexibility is set in the flexible connection
It connects in housing, the flexible connection housing is the flexible connection housing of high-hardness, and the flexible connection inner sleeve is copper
Flexible connection inner sleeve.
The machine tool chief axis is equipped with driver plate 61, and the flexibility chuck is equipped with drive block 22, and the driver plate is dialled by drive block
Dynamic flexible card disc spins.
The flexibility chuck is equipped with the claw 23 of at least three clamping workpieces.
Embodiment one:
Such as Fig. 1 to Fig. 5, a kind of rotational workpieces flexible drive fixture, including swivel base 10, flexible chuck 20 and flexible jointing-rod
30。
Swivel base 10 is mounted on machine tool chief axis 60 by one group of bearing 11, and swivel base is coaxial with machine tool chief axis, rotation
Turn chassis to be fixedly connected in axial direction with machine tool chief axis, swivel base can be rotated relative to machine tool chief axis (can be in machine tool chief axis
On rotate freely).
Swivel base is set there are six flexible connecting sleeve, and six flexible connecting sleeves revolve around it axis on chassis etc. point distribution.
Flexible connecting sleeve includes flexible connection housing 41 and flexible connection inner sleeve 42, is set on flexible connection housing in flexible connection
Interior, flexible connection housing is the flexible connection housing of high-hardness, and the present embodiment uses carbon tool steel.It is flexibly connected inner sleeve
It is flexible connection inner sleeve made of copper.
It is flexibly connected in inner sleeve and is equipped with flexible connection hole 40.Flexible connection is equipped with the connection cooperated with flexible jointing-rod in hole
Along 43, the two sides for connecting edge are the taper holes expanded outwardly.The side on connection edge is that taper hole 44 is expanded in outside, and taper hole is expanded in outside
Taper K1 is 1:8, and the length L1 of outside expansion taper hole is to be flexibly connected 0.77 times of hole length L, outside expand taper hole with connect
55 ° of transition chamfering α is equipped between.The other side on connection edge is that taper hole 45 is expanded in inside, and the taper K2 of taper hole is expanded in inside
Length L2 for 1:1.66, inside expansion taper hole is 0.23 times for being flexibly connected hole length.According to engineering practice, such flexibility
Connection hole machined can preferably realize the function of flexible chuck.
The claw 23 there are three clamping workpiece is set on flexible chuck, three claws surround the circumference equal part of flexible chuck
Distribution.Flexible chuck is equipped with two symmetrical drive blocks 22, and the material of drive block is copper.
Machine tool chief axis is equipped with driver plate 61, and driver plate, which sets to correspond to there are two position, drives fast driving lever 62, and the driving lever of driver plate is dialled
Dynamic drive block, drives flexible card disc spins.Flexible chuck is stirred using the driving lever of two symmetric positions, flexible card disk can be made
Rotary driving force more balances, and flexible chuck is made mainly to obtain torsion driving force, and avoids generating workpiece radial forces, keeps away
Exempt from workpiece and generates stress or flexible deformation under the action of radial force.
Flexible chuck is mounted on swivel base by flexible jointing-rod 30, and flexible chuck is equipped with six positions and corresponds to
The flexible jointing-rod in the flexible connection hole of swivel base, six flexible jointing-rods are around axis of flexible chuck etc. point distribution.It is soft
Property connecting rod be fixedly connected with flexible chuck, in the present embodiment, the end of flexible jointing-rod is equipped with an end cap 31, flexible connection
The end cap of bar is pressed into the hole of flexible chuck with stationary fit, is fixed on flexible chuck.
Flexible jointing-rod passes through the flexible connection hole 40 of swivel base (flexible connection inner sleeve), flexible jointing-rod be pierced by it is soft
Property connecting hole end be equipped with lock nut 33 and end washer 34, end washer is the washer of the material of high rigidity, using carbon
Plain tool steel is made.It is equipped with floor clip 35 between lock nut and end washer, prevents lock nut from loosening.
Flexible connection spring 32 is cased on flexible jointing-rod, the one end for being flexibly connected spring presses flexible chuck, and flexibility is even
Connect the other end press flexible connection inner sleeve 42 of spring.The inside expansion taper hole 45 of inner sleeve is flexibly connected relative to flexible connection bullet
Spring, i.e., towards flexible connection spring.
By the adjustable spring of lock nut to flexible chuck flexible connection inner sleeve (also corresponding to swivel base)
Pressure reaches different degrees of flexible drive effect.
As shown in figure 4, being equipped with main top 73(in the front end of machine tool chief axis also may be mounted on swivel base), workpiece
Both ends are all equipped with centre bore, and one end of workpiece 71 is withstood on main top 73, and the other end of workpiece is held out against by rotation top 72.Lathe
When main shaft 60 rotates, driver plate 61 is stirred flexible chuck 20 and is rotated, and flexible card disk drives workpiece rotation.In such driving structure
In, it is only necessary to flexible chuck generates the clamping force of circumferencial direction to workpiece, while should be avoided and generate the effect of other attachmentes to workpiece
Power, including the radial thrust and axial thrust to workpiece.
When fixing workpiece, due to workpiece irregularity (be processed before there are sizes and Form and position error), also by
In the manufacturing and fixing error of fixture (including swivel base, flexible chuck and flexible jointing-rod).If chuck and swivel base
Using rigid connection, just inevitably there is chuck to the additional forces of workpiece.
The rotational workpieces flexible drive fixture of the present embodiment, flexible connection spring can make between flexible chuck and swivel base
Distance keep it is a kind of can Flexible change state, the end face of swivel base can do suitable shifting along the axis of flexible jointing-rod
Dynamic, for the connection in the flexible connection hole of flexible jointing-rod and swivel base along cooperating, flexible jointing-rod can be in flexible connection hole
Interior axial movement, and axis oscillating is carried out, keep flexible chuck mobile with the fixing position of workpiece, can be described as flexible drive state,
Absorb additional forces.
The taper hole that flexible connection hole uses the connection edge and the two sides that cooperate with flexible jointing-rod to expand outwardly, makes to be flexibly connected
Bar successfully can do axial displacement and can produce axis inclination angle along flexible connection hole, thus swivel base passes through flexible connection
It hole can be successfully along the axis trimming position of flexible jointing-rod.Flexible jointing-rod can be reduced using flexible connection inner sleeve made of copper
Abrasion and improve the stationarity of transmission, flexible connection inner sleeve can be used as vulnerable part and be replaced.Using the soft of high-hardness
Property connection housing, contacted with the end washer of high rigidity, be effective against end washer with flexible connection housing contact friction.
By the position between the pretightning force and flexible chuck and swivel base of the adjustable flexible connection spring of lock nut, obtain good
Driving condition.
The rotational workpieces flexible drive fixture of the present embodiment, can be maximally maintained the nature of workpiece, avoid
Influence to machining accuracy.Knot when can eliminate column workpiece finishing using the rotational workpieces flexible drive fixture of the present embodiment
Structure error and defect are remarkably improved the structure precision and finish of workpiece, reduce in process and walk light-knife number, improve
Processing efficiency and one-pass finished qualification rate.
Claims (8)
1. a kind of rotational workpieces flexible drive fixture, the workpiece for the rotation that is loaded on lathe, which is characterized in that including rotation
Chassis and flexible chuck；The swivel base is mounted on machine tool chief axis and is coaxially freely rotated relative to machine tool chief axis, described
Flexible chuck is mounted on the swivel base by flexible jointing-rod, and flexible connection spring is cased on the flexible jointing-rod,
One end press of the flexible connection spring flexible chuck, the other end of the flexible connection spring press the rotation bottom
Disk.
2. a kind of rotational workpieces flexible drive fixture according to claim 1, which is characterized in that the flexibility chuck passes through
More flexible jointing-rods are mounted on the swivel base, axis etc. of the more flexible jointing-rods around the flexible chuck
Distribution.
3. a kind of rotational workpieces flexible drive fixture according to claim 1, which is characterized in that the swivel base is equipped with
It is flexibly connected hole, the flexible jointing-rod passes through the flexible connection hole, and the flexible jointing-rod is being pierced by the flexible connection
The end in hole is equipped with lock nut and end washer, and the flexible jointing-rod is fixedly connected with the flexible chuck.
4. a kind of rotational workpieces flexible drive fixture according to claim 3, which is characterized in that in the flexible connection hole
Equipped with the connection edge cooperated with the flexible jointing-rod, the two sides on the connection edge are the taper holes expanded outwardly.
5. a kind of rotational workpieces flexible drive fixture according to claim 4, which is characterized in that the side on the connection edge
The taper of expansion taper hole on the outside of being, the outside expansion taper hole is 1:8, and the length of the outside expansion taper hole is that the flexibility connects
0.77 times of hole length is connect, the outside expansion taper hole and the connection are equipped with 55 ° of transition chamfering between；The connection edge
The other side be that taper hole is expanded in inside, the taper of inside expansion taper hole is 1:1.66, the length of the inside expansion taper hole
It is 0.23 times of the flexible connection hole length；The inside expansion taper hole is relative to the flexible connection spring.
6. a kind of rotational workpieces flexible drive fixture according to claim 3, which is characterized in that the swivel base is equipped with
Flexible connecting sleeve, the flexible connecting sleeve include flexible connection housing and flexible connection inner sleeve, and the flexible connection hole setting exists
In the flexible connection inner sleeve, it is set in the flexible connection in the flexible connection housing, the flexible connection housing
It is the flexible connection housing of high-hardness, the flexible connection inner sleeve is flexible connection inner sleeve made of copper.
7. a kind of rotational workpieces flexible drive fixture according to claim 1, which is characterized in that the machine tool chief axis is equipped with
Driver plate, the flexibility chuck are equipped with drive block, and the driver plate stirs flexible card disc spins by drive block.
8. a kind of rotational workpieces flexible drive fixture according to claim 1, which is characterized in that the flexibility chuck is equipped with
The claw of at least three clamping workpieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910412482.4A CN110052871B (en) | 2019-05-17 | 2019-05-17 | Flexible driving clamp for rotary workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910412482.4A CN110052871B (en) | 2019-05-17 | 2019-05-17 | Flexible driving clamp for rotary workpiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110052871A true CN110052871A (en) | 2019-07-26 |
| CN110052871B CN110052871B (en) | 2020-08-18 |
Family
ID=67323485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910412482.4A Active CN110052871B (en) | 2019-05-17 | 2019-05-17 | Flexible driving clamp for rotary workpiece |
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| Country | Link |
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| CN (1) | CN110052871B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116638357A (en) * | 2023-07-27 | 2023-08-25 | 烟台东星集团有限公司 | Clamping device for machining integrated forging oil cylinder shaft |
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| CN205733952U (en) * | 2016-06-23 | 2016-11-30 | 无锡市国松环保机械有限公司 | A kind of gear box casing clamp for machining |
| DE102015119061B3 (en) * | 2015-11-06 | 2016-12-15 | Ott-Jakob Spanntechnik Gmbh | jig |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB782343A (en) * | 1954-10-18 | 1957-09-04 | Gleason Works | Improvements relating to machine tools, particularly gear-cutting machines |
| CN102773774A (en) * | 2012-07-06 | 2012-11-14 | 北京信泰德利华自动化技术有限公司 | Roller drive plate clamping tool |
| CN202684136U (en) * | 2012-08-08 | 2013-01-23 | 陈德明 | Chuck and machine tool |
| CN104227345A (en) * | 2014-08-21 | 2014-12-24 | 贵州凯星液力传动机械有限公司 | Processing method for high-precision thin step shaft and grinding chuck for processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116638357A (en) * | 2023-07-27 | 2023-08-25 | 烟台东星集团有限公司 | Clamping device for machining integrated forging oil cylinder shaft |
| CN116638357B (en) * | 2023-07-27 | 2023-10-03 | 烟台东星集团有限公司 | Clamping device for machining integrated forging oil cylinder shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110052871B (en) | 2020-08-18 |
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