CN105945312A - Back adjustment type precise cutting unit - Google Patents
Back adjustment type precise cutting unit Download PDFInfo
- Publication number
- CN105945312A CN105945312A CN201610555526.5A CN201610555526A CN105945312A CN 105945312 A CN105945312 A CN 105945312A CN 201610555526 A CN201610555526 A CN 201610555526A CN 105945312 A CN105945312 A CN 105945312A
- Authority
- CN
- China
- Prior art keywords
- cutting unit
- main body
- rotation plane
- hole
- locking 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/02—Boring bars
- B23B29/025—Boring toolholders fixed on the boring bar
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
- Knives (AREA)
Abstract
The invention relates to a back adjustment type precise cutting unit. The back adjustment type precise cutting unit comprises a main body, a cutter rod, a revolving screw sleeve, an elastic element and a locking nut; a through hole is formed in the main body; the revolving screw sleeve is coaxially mounted in the through hole; one end of the cutter rod is mounted in an internal thread hole of the revolving screw sleeve through a thread; an empty cutter groove is formed in the revolving screw sleeve for dividing the internal thread hole into two sections; an annular boss is arranged on the outer peripheral surface of the revolving screw sleeve; narrow grooves are radially formed in the outer cylindrical surface of the annular boss; the depth of the narrow grooves is larger than the radius of the cylindrical surface in the place; the narrow grooves are positioned in the empty cutter groove; two narrow grooves are provided, and are axially staggered; opening directions of the two narrow grooves are different by 180 degrees; one end surface of the annular boss is pressed by the locking nut, and the other end surface of the annular boss is ejected against the elastic element; and the locking nut is in threaded connection with the main body. The precision and the reliability of the back adjustment type precise cutting unit are greatly improved, the service life is largely prolonged, and the production and assembly technology is simplified.
Description
Technical field
The present invention relates to a kind of machine tool accessory, particularly relate to mode precision cutting list after one
Unit.
Background technology
Fine setting cutting unit is the core component of accurate boring class cutter, existing universal technology
In, micrometer adjustement boring tool cutting unit includes main body, knife bar, and the revolution swivel nut being arranged in main body,
Revolution swivel nut two ends are both supported upon on flexible member；One end of knife bar is by being threadably mounted at back
Turn in the internal thread hole of swivel nut.By along counterclockwise rotating revolution swivel nut, driving knife bar edge
Main body does the reciprocating motion of axis direction.
The female thread wherein turning round swivel nut is whole screw thread, by cutting out axial mistake at revolution swivel nut
Position and reverse narrow slot, make narrow slot generation plastic deformation by external force before assembling in advance so that interior spiral shell
There is pitch deformation in this place in stricture of vagina.After screwing in knife bar, thread pitch can be partially removed.But it is real
During border uses, narrow slot is allowed to deform so that pitch reaches a reasonable deflection very by external force
Difficulty；Deform the least, do not reach and Screw Thread Fit Clearance is completely eliminated；Deform excessive, then before making
Rear two sections of screw threads cannot link up and cause product cannot assemble at all.And this deformation must be
Complete when assembling, it is difficult to grasp deflection, the use process after having assembled
In, the most likely narrow slot deformation-recovery causes screw thread to get rid of gap inefficacy, it is also possible to for a long time
Counteract original by the work of narrow slot eliminating deformation thread pitch due to the abrasion of screw thread after not using
With, create the new screw thread working clearance, make screw thread transmission lose transmitting accuracy.And, existing
Structured narrow slot is opened at the screw thread of revolution swivel nut, and screw thread becomes with the screw thread of narrow slot intersection
Shape, has a strong impact on the quality of fit of revolution swivel nut and knife bar.
Summary of the invention
Mode precision cutting unit after it is desirable to provide, can get rid of knife bar spiral shell easily and reliably
Stricture of vagina and the thread pitch turning round swivel nut, it is achieved screw thread gapless relative motion.
For reaching above-mentioned purpose, the technical solution used in the present invention is as follows:
Rear mode precision cutting unit, including main body, knife bar, revolution swivel nut, flexible member and
Locking nut, has through hole in described main body, described revolution swivel nut is co-axially mounted in through-holes,
One end of knife bar, by being threadably mounted in the internal thread hole of revolution swivel nut, sets in revolution swivel nut
Put undercut and internal thread hole is separated into two sections；
Annular boss, the external cylindrical surface of described annular boss is had on described revolution swivel nut outer circumference surface
Upper radial direction has narrow slot, and the degree of depth of narrow slot is more than the radius of external cylindrical surface, described narrow slot position at this
At undercut；Described narrow slot has two, and two narrow slot axially offset, two narrow slot openings
To difference 180 degree；Described flexible member and locking nut are all enclosed within revolution swivel nut, described ring
The end face of shape boss is pressed on locking nut, and annular boss other end withstands on flexible member
On, described through hole is shoulder hole, and described flexible member is subject to be pressed on the interior step surface A of main body, institute
State locking nut to be connected with main body screw.
Further, the outer wall of the described knife bar other end is provided with the first anti-rotation plane, and described
One anti-rotation plane coordinates with the spigot surface in main body.
Further, the outer wall of the described knife bar other end is additionally provided with the second anti-rotation plane, described
Second anti-rotation plane coordinates with the spigot surface in main body.
Further, described first anti-rotation plane is 60 120 with the angle of the second anti-rotation plane
Degree.
Preferably, the angle of described first anti-rotation plane and the second anti-rotation plane is 90 degree.
Further, described first anti-rotation plane is with the second anti-rotation plane by arc surface transition even
Connect.
Further, coordinate with body gap at described knife bar arc surface.
Further, between described annular boss and locking nut, it is provided with spacing plain washer, described
Through hole is multistage shoulder hole, and described spacing plain washer is withstood on the interior platform of main body by being pressed on locking nut
On terrace B.
Further, described flexible member is spring.
Further, being provided with end cap outside described locking nut, end cap is connected to turn round on swivel nut.
Compared with prior art, the method have the advantages that
1. the present invention turns round swivel nut female thread and screws in knife bar external screw thread, arranges undercut and will turn round spiral shell
Internal thread hole in set is divided into two sections, cuts out axle at two at revolution swivel nut undercut simultaneously
To the reverse narrow slot of dislocation, under the pressure effect of flexible member, the narrow slot that two places are opened occurs
The deformation of trace and make two sections of the most coherent screw thread generation axial deformations, get rid of knife bar screw thread with
The thread pitch of revolution swivel nut, it is achieved that knife bar and the gapless relative motion turning round swivel nut；
2., due to the constraint of anti-rotation plane, knife bar can only move in the axial direction in main body.This
The anti-rotation locking function of anti-turn screw in prior art is developed into list by the anti-rotation design of invention
Solely locking function, makes locking independent with anti-rotating function, improves product reliability in use；
The most spacing plain washer is pressed on locking nut, closely pastes with the step surface at main body endoporus
Close, form an accurate step supporting surface, under the pressure effect of flexible member, turn round swivel nut
It is supported on this step surface rotary work and relative to main body without moving axially, it is achieved that knife bar phase
Main body is made the most mobile, reach good working effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the explosive view of Fig. 1；
Fig. 3 is the structural representation turning round swivel nut in the present invention；
Fig. 4 is the axonometric chart of anti-rotation structure in the present invention；
Fig. 5 is the left view of Fig. 4；
Fig. 6 is the structural representation of modular cutting unit；
Fig. 7 is the structural representation of monoblock type cutting unit；
In figure: 1-main body, 2-knife bar, 3-turn round swivel nut, 4-undercut, 5-narrow slot, 6-
First anti-rotation plane, 7-the second anti-rotation plane, 8-flexible member, the spacing plain washer of 9-, 10-
Step surface A, 15-in locking nut, 11-annular boss, 12-arc surface, 13-through hole, 14-
Interior step surface B.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with
Accompanying drawing, is further elaborated to the present invention.
As shown in Figure 1, 2, rear mode precision cutting unit disclosed by the invention, including main body
1, knife bar 2, revolution swivel nut 3, flexible member 8 and locking nut 10, have in main body 1
Through hole 13, revolution swivel nut 3 is coaxially mounted in through hole 13, and screw thread is passed through in one end of knife bar 2
It is arranged in the internal thread hole of revolution swivel nut 3, as it is shown on figure 3, arrange in revolution swivel nut 3
Internal thread hole is separated into two sections by undercut 4.
Annular boss 11, the external cylindrical surface of annular boss 11 is had on revolution swivel nut 3 outer circumference surface
Upper radial direction has narrow slot 5, and the degree of depth of narrow slot 5 is more than the radius of external cylindrical surface at this, further
, the degree of depth of narrow slot 5 is equal to the radius sum of the radius of external cylindrical surface at this with undercut 4.
Narrow slot 5 is positioned at undercut 4；Narrow slot 5 has two, and two narrow slot 5 axially offset, two
Narrow slot 5 opening direction differs 180 degree；Flexible member 8 and locking nut 10 are all enclosed within revolution
On swivel nut 3, the end face of annular boss 11 is pressed on locking nut 10, annular boss 11
Other end withstands on flexible member 8, and through hole 13 is shoulder hole, and flexible member 8 is pressed on
The interior step surface A14 of main body 1, locking nut 10 is threadeded with main body 1.Locking nut
Being provided with end cap outside 10, end cap is connected to turn round on swivel nut 3.
Flexible member 8 can have multiple choices according to its functional requirement: in such as present embodiment
Flexible member 8 have selected helical spring, and it can also be combination or the strength rubber of butterfly spring
And engineering plastics etc. possess the elastomeric material meeting performance requirement.
Being provided with spacing plain washer 9 between annular boss 11 and locking nut 10, through hole 13 is
Multistage shoulder hole, spacing plain washer 9 is withstood on the interior step of main body 1 by being pressed on locking nut 10
On the B15 of face.
The present invention designs anti-rotation structure, by the anti-rotation locking function of anti-turn screw in prior art
Develop into independent locking function, make product in use reliability increase.As shown in Figure 4,5,
The present invention is provided with the first anti-rotation plane 6, the first anti-rotation plane on the outer wall of knife bar 2 other end
6 coordinate with the spigot surface in main body 1.It is additionally provided with the second anti-rotation on the outer wall of knife bar 2 other end
Plane 7, the second anti-rotation plane 7 coordinates with the spigot surface in main body 1, is formed at knife rod head
Two-way anti-rotation structure.The angle of the first anti-rotation plane 6 and the second anti-rotation plane 7 is 60 120
Degree.Preferably, the angle of the first anti-rotation plane 6 and the second anti-rotation plane 7 is 90 degree.The
One anti-rotation plane 6 is connected by arc surface 12 transition with the second anti-rotation plane 7, knife bar 2 circle
With main body 1 matched in clearance at cambered surface 12.
In present embodiment, main body 1 is sleeve-shaped, and rear mode precision cutting unit is for such as Fig. 6 institute
The modular cutting unit shown.Certainly also the sleeve-shaped main body in present embodiment can be developed into
Solid tool form shown in Fig. 7.
The present invention arranges middle part undercut and coherent internal thread hole is divided into two in turning round swivel nut
Section, cuts out the reverse narrow slot of axile displacement at two at undercut.This structure make revolution swivel nut without
When axial compressive force keeps free state, female thread is coherent screw thread.When applying axial compressive force,
Being divided into the deformation being threaded through two narrow slot of two sections and produce pitch change, this pitch becomes
Change can discharge the thread pitch of the knife bar matched therewith.
Present invention greatly enhances the fine setting precision of cutting unit, reliability and use the longevity
Life, the technology simultaneously also making production assemble requires to be simplified, and operator only needs qualified
Part simply assembles solid and reliable, it is not necessary to have extra technical conditions to retrain, and just can protect
The overall performance of card product.
Certainly, the present invention also can have other numerous embodiments, without departing substantially from the present invention spirit and
In the case of its essence, those of ordinary skill in the art can according to the present invention make various accordingly
Change and deformation, but these change accordingly and deformation all should belong to the right appended by the present invention
The protection domain required.
Claims (10)
1. mode precision cutting unit after, it is characterised in that: include main body (1), knife bar (2),
Revolution swivel nut (3), flexible member (8) and locking nut (10), in described main body (1)
Having through hole (13), described revolution swivel nut (3) is coaxially mounted in through hole (13), knife bar
(2) one end is by being threadably mounted in the internal thread hole of revolution swivel nut (3), at revolution spiral shell
In set (3), undercut (4) is set internal thread hole is separated into two sections；
Annular boss (11), described annular boss is had on described revolution swivel nut (3) outer circumference surface
(11) radially having narrow slot (5) on external cylindrical surface, the degree of depth of narrow slot (5) is more than at this
The radius of external cylindrical surface, described narrow slot (5) is positioned at undercut (4) place, described narrow slot (5)
Having two, two narrow slot (5) axially offset, two narrow slot (5) opening direction differences 180
Degree；Described flexible member (8) and locking nut (10) are all enclosed within revolution swivel nut (3),
The end face of described annular boss (11) is pressed on locking nut (10), annular boss (11)
Other end withstand on flexible member (8), described through hole (13) is shoulder hole, described
Flexible member (8) is subject to be pressed on the interior step surface A (14) of main body (1), described locking nut
(10) threaded with main body (1).
Rear mode precision cutting unit the most according to claim 1, it is characterised in that: institute
The outer wall stating knife bar (2) other end is provided with the first anti-rotation plane (6), described first anti-rotation
Plane (6) coordinates with the spigot surface in main body (1).
Rear mode precision cutting unit the most according to claim 2, it is characterised in that: its
It is characterised by: on the outer wall of described knife bar (2) other end, be additionally provided with the second anti-rotation plane (7),
Described second anti-rotation plane (7) coordinates with the spigot surface in main body (1).
Rear mode precision cutting unit the most according to claim 3, it is characterised in that: institute
The angle stating the first anti-rotation plane (6) and the second anti-rotation plane (7) is 60 120 degree.
Rear mode precision cutting unit the most according to claim 4, it is characterised in that: institute
The angle stating the first anti-rotation plane (6) and the second anti-rotation plane (7) is 90 degree.
6. according to the rear mode precision cutting unit described in claim 3,4 or 5, its feature
It is: described first anti-rotation plane (6) and the second anti-rotation plane (7) are by arc surface (12)
Transition connects.
Rear mode precision cutting unit the most according to claim 6, it is characterised in that: institute
State knife bar (2) arc surface (12) place and main body (1) matched in clearance.
Rear mode precision cutting unit the most according to claim 1, it is characterised in that:
Spacing plain washer (9), institute it is provided with between described annular boss (11) and locking nut (10)
Stating through hole (13) is multistage shoulder hole, and described spacing plain washer (9) is pressed on locking nut
(10) withstand on the interior step surface B (15) of main body.
Rear mode precision cutting unit the most according to claim 1, it is characterised in that: institute
Stating flexible member (8) is spring.
Rear mode precision cutting unit the most according to claim 1, it is characterised in that:
Described locking nut (10) outside is provided with end cap, and end cap is connected to turn round on swivel nut (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610555526.5A CN105945312B (en) | 2016-07-14 | 2016-07-14 | Mode precision cutting unit afterwards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610555526.5A CN105945312B (en) | 2016-07-14 | 2016-07-14 | Mode precision cutting unit afterwards |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105945312A true CN105945312A (en) | 2016-09-21 |
| CN105945312B CN105945312B (en) | 2018-07-17 |
Family
ID=56900904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610555526.5A Active CN105945312B (en) | 2016-07-14 | 2016-07-14 | Mode precision cutting unit afterwards |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105945312B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3400616A (en) * | 1965-08-26 | 1968-09-10 | Mihic Wlajko | Tool insert |
| DE3443426A1 (en) * | 1984-02-22 | 1985-08-22 | Veb Werkzeugkombinat Schmalkalden, Ddr 6080 Schmalkalden | Split tie rod for cutting tools with interchangeable tool head |
| CN103158032A (en) * | 2013-04-01 | 2013-06-19 | 成都成量工具集团有限公司 | Fine-adjustment fine boring unit |
| CN104400039A (en) * | 2014-10-09 | 2015-03-11 | 陕西启源科技发展有限责任公司 | Multifunctional regulating boring bar |
| CN205733050U (en) * | 2016-07-14 | 2016-11-30 | 成都成量工具集团有限公司 | Rear mode precision cutting unit |
-
2016
- 2016-07-14 CN CN201610555526.5A patent/CN105945312B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3400616A (en) * | 1965-08-26 | 1968-09-10 | Mihic Wlajko | Tool insert |
| DE3443426A1 (en) * | 1984-02-22 | 1985-08-22 | Veb Werkzeugkombinat Schmalkalden, Ddr 6080 Schmalkalden | Split tie rod for cutting tools with interchangeable tool head |
| CN103158032A (en) * | 2013-04-01 | 2013-06-19 | 成都成量工具集团有限公司 | Fine-adjustment fine boring unit |
| CN104400039A (en) * | 2014-10-09 | 2015-03-11 | 陕西启源科技发展有限责任公司 | Multifunctional regulating boring bar |
| CN205733050U (en) * | 2016-07-14 | 2016-11-30 | 成都成量工具集团有限公司 | Rear mode precision cutting unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105945312B (en) | 2018-07-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191227 Address after: No. 199, Section 1, South Ring Road, Sanhe street, Xindu District, Chengdu, Sichuan 610000 Patentee after: Chengdu Xincheng Tools Co., Ltd Address before: 610000, No. 199, south section of Ring Road, Xindu District, Sichuan, Chengdu Patentee before: Chengdu Chengliang Tools Group Co., Ltd. |
|
| TR01 | Transfer of patent right |