CN107009259A - A kind of hinge top gem of a girdle-pendant bar of threaded adjusting - Google Patents
A kind of hinge top gem of a girdle-pendant bar of threaded adjusting Download PDFInfo
- Publication number
- CN107009259A CN107009259A CN201710192119.7A CN201710192119A CN107009259A CN 107009259 A CN107009259 A CN 107009259A CN 201710192119 A CN201710192119 A CN 201710192119A CN 107009259 A CN107009259 A CN 107009259A
- Authority
- CN
- China
- Prior art keywords
- regulating bolt
- mandrel
- bar body
- cutter bar
- girdle
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/08—Honing tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a kind of hinge top gem of a girdle-pendant bar of threaded adjusting, pass through the axially arranged centre bore in cutter bar body, it is tapered mandrel in the middle part of being set in centre bore, the honing base being engaged with mandrel is set in cutter bar body, and in the adjustable side of cutter bar body, silk braid and regulating bolt are set, in the centrally disposed hole of regulating bolt, one end of regulating bolt is engaged with silk braid, and the other end of regulating bolt is in contact with one end that mandrel is located at cutter bar body adjustable side；Being coordinated by the screw thread of regulating bolt and silk braid promotes mandrel to be moved axially in centre bore, tapered design support honing base in the middle part of mandrel opens the purpose for reaching regulation, when regulating bolt is because of often twisting abrasion, regulating bolt and the Screw Thread Fit Clearance of silk braid become big, when governor motion loses original precision, it is only necessary to regulating bolt and silk braid are changed, are very convenient to, and cost is relatively low, original precision of governor motion is not influenceed.
Description
Technical field
The present invention relates to precise machine machining field, and in particular to a kind of hinge top gem of a girdle-pendant bar of threaded adjusting.
Background technology
In precision optical machinery manufacture field, when to high hardness material, such as hardened steel, hard alloy, the hole wall on ceramics are carried out
During accurate grinding, hinge top gem of a girdle-pendant bar is often used, one layer of equigranular high grade diamond is plated with the periphery due to cutting with scissors top gem of a girdle-pendant bar
Abrasive material, therefore the material of high rigidity can be processed；Existing hinge top gem of a girdle-pendant bar is typically made up of cutter bar body and mandrel, mandrel
With certain conical surface, cutter bar body is expanded by the axial movement for adjusting mandrel, the diamond abrasive pair in cutter bar body
Hole wall is constantly ground, so that the aperture in processing hole constantly becomes big, reaches the purpose to processing hole accurate grinding processing.
The utility model of Application No. 201420303367.6 disclose it is a kind of can threaded adjusting hinge top gem of a girdle-pendant cutter, by knife
Bar, broach shell, adjusting nut composition；Knife bar front end is provided with external screw thread, and center section is male cone (strobilus masculinus), and its electroplating surface has diamond
Grain, rear end guide portion is connected with machine tool chief axis；Broach shell be " C " type hatch frame, centre be inner conical surface, the inner conical surface of broach shell with
The male cone (strobilus masculinus) of knife bar coordinates, and is electroplate with as needed on varigrained diamond particles, broach shell on broach shell and provided with several
Helix-type flute, plays a part of row and cuts；Broach shell is arranged on knife bar, and adjusting nut is arranged on the external screw thread of knife bar front end, is led to
The adjusting nut for crossing front end promotes broach shell to be moved to the big end of the conical surface, expands broach shell external diameter, broach shell inner conical surface and knife bar male cone (strobilus masculinus)
It is fitted close.
In above-mentioned technical proposal, broach shell is equivalent to cutter bar body, and knife bar is equivalent to mandrel, and whole hinge top gem of a girdle-pendant cutter is provided with tune
The one end for saving nut is adjustable side, and the one end being connected with machine tool chief axis is connection end；Adjusting nut is directly set with mandrel front end
The external screw thread put is engaged, because in the process to inner bore of part, adjusting nut is because of often twisting abrasion, adjusting nut
Internal thread and mandrel front end set external screw thread between Screw Thread Fit Clearance become larger, whole governor motion loses original
Precision, can cause mandrel to be scrapped, and the cost of mandrel is costly, mandrel change wasted than more serious, therefore how
Arbor portions, when governor motion loses original precision, are not changed by design hinge top gem of a girdle-pendant cutter, but to other regulating members
Carry out the trickle technical problem changed, be those skilled in the art's urgent need solution.
The content of the invention
It is only right when governor motion loses original precision it is an object of the invention to provide a kind of hinge top gem of a girdle-pendant bar of threaded adjusting
Part regulating member carries out trickle replacing, changes speed soon, cost is relatively low, and can ensure original degree of regulation.
The technical solution adopted by the present invention is：A kind of hinge top gem of a girdle-pendant bar of threaded adjusting, including cutter bar body, axially penetrate through knife bar
Middle part is tapered mandrel, is arranged in cutter bar body in the adjustable side of body and the centre bore of installation end, centrally disposed hole
And the honing base being engaged with mandrel and the hone stone being arranged on honing base, the adjustable side of the cutter bar body is set
There are silk braid, the silk braid and the centre bore coaxial line, the adjustable side of the cutter bar body is additionally provided with regulating bolt, the tune
Save in the centrally disposed hole of bolt, one end of regulating bolt is engaged with silk braid, the other end and the mandrel of regulating bolt are located at knife
One end of bar body adjustable side is in contact.
Further the installation end of the cutter bar body is provided with push rod, the centrally disposed hole of push rod, the core
Spring is provided between the other end and push rod of axle.
Further the first corresponding pilot hole, the silk braid are provided with the adjustable side of the cutter bar body and silk braid
Jackscrew is locked by the silk braid being engaged with first pilot hole to be fixed in cutter bar body.
Further the mandrel contact it is axially arranged on the side wall of one end of the regulating bolt have the first groove, it is described
The adjustable side of cutter bar body is additionally provided with the second pilot hole corresponding with first groove, second pilot hole and set
There is spindle Lock to press closer silk, spindle Lock, which presses closer silk and is inserted into the first groove, to be used to prevent mandrel from rotating.
Further the regulating bolt is " convex " type structure, and one end end that the mandrel contacts the regulating bolt is set
It is equipped with the second groove being engaged with the top of the regulating bolt.
The spanner position hole for rotating regulating bolt is further additionally provided with the regulating bolt.
Further the two ends of the honing base are arranged in cutter bar body by extension spring respectively.
Further the installation end of the cutter bar body is provided with the ring flange for connecting machine tool output end.
The present invention by the axially arranged centre bore in cutter bar body, in centre bore set in the middle part of be tapered mandrel,
The honing base being engaged with mandrel is set in cutter bar body, and silk braid is set in the adjustable side of cutter bar body and spiral shell is adjusted
In bolt, the centrally disposed hole of regulating bolt, one end of regulating bolt is engaged with silk braid, the other end and the mandrel position of regulating bolt
It is in contact in one end of cutter bar body adjustable side；Coordinated by the screw thread of regulating bolt and silk braid and promote mandrel in centre bore axis
To movement, the tapered design support honing base in the middle part of mandrel opens the purpose for reaching regulation, when regulating bolt is because of often twisting
The Screw Thread Fit Clearance of abrasion, regulating bolt and silk braid becomes big, when governor motion loses original precision, it is only necessary to regulating bolt
Changed, be very convenient to silk braid, and cost is relatively low, and original precision of governor motion is not influenceed.
Further the installation end of cutter bar body is provided with push rod, the centrally disposed hole of push rod, the other end of mandrel with
Spring is provided between push rod, by setting spring between mandrel and push rod, when regulating bolt is to the adjustable side of cutter bar body
When direction is moved, the screen resilience of spring makes mandrel be moved with the movement of regulating bolt, facilitates the regulation of whole device.
Axially arranged first groove, knife bar sheet on the side wall of one end that the regulating bolt is further contacted in mandrel
The adjustable side of body, which is additionally provided with the second pilot hole corresponding with first groove, the second pilot hole, is provided with mandrel locking
Jackscrew, spindle Lock presses closer silk and is inserted into the first groove, and spindle Lock, which presses closer silk, can prevent mandrel Effect of Rotation degree of regulation, and
First groove and spindle Lock press closer silk and are engaged with the limit function to mandrel shaft orientation moving range, prevent mandrel from moving axially
It is excessive that device is caused to damage.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 for Fig. 1 A-A to sectional view.
Embodiment
As depicted in figs. 1 and 2, axle is provided with a kind of hinge top gem of a girdle-pendant bar of threaded adjusting, including cutter bar body 1, cutter bar body 1
To the centre bore 14 of the adjustable side through cutter bar body 1 and installation end, center section is provided with centre bore 14 for tapered core
Multiple honing bases 2 are provided with axle 15, cutter bar body 1, are specially provided with the lateral wall of cutter bar body 1 multiple along knife bar
The strip hole of the axial direction of body 1, multiple strip holes are uniformly looped around on the lateral wall circumference of cutter bar body 1, and strip hole is with
Heart hole 14 is connected, and multiple honing bases 2 are inserted respectively into strip hole, has trickle seam between honing base 2 and strip hole
Gap, the two ends of each honing base 2 are connected by extension spring 5 with cutter bar body 1 respectively, inwall and the mandrel 15 of honing base 2
Outer wall be engaged；Hone stone 3 is provided with multiple honing bases 2, the main component of hone stone 3 is diamond abrasive, can
The fineness of processing endoporus is selected as needed.
The adjustable side of the cutter bar body 1 is provided with silk braid 7, and the silk braid 7 is set with the coaxial line of centre bore 14, and
In the centrally disposed hole 14 of silk braid 7, the first corresponding pilot hole 10, silk are provided with the adjustable side of cutter bar body 1 and silk braid 7
Set 7 is locked jackscrew by the silk braid being engaged with first pilot hole 10 and is fixed on the adjustable side of cutter bar body 1, facilitates
The dismounting and change of silk braid 7.
The adjustable side of the cutter bar body 1 is additionally provided with regulating bolt 8, the centrally disposed hole 14 of regulating bolt 8,
Regulating bolt 8 is to be provided with the outer spiral shell being engaged with the internal thread of silk braid 7 on " convex " type structure, the bottom outer wall of regulating bolt 8
Line, the top of regulating bolt 8 is in contact with one end that mandrel 15 is located at the adjustable side of cutter bar body 1, and the preferably contact of mandrel 15 is adjusted
One end end of section bolt 8 is provided with the second groove 16 being engaged with the top of the regulating bolt 8, the top of regulating bolt 8
End is inserted into the second groove 16, can effectively prevent regulating bolt 8 from holding out against when mandrel 15 is moved axially to break away, and is influenceed
Degree of regulation；The spanner position hole 9 for rotating regulating bolt 8 is additionally provided with the regulating bolt 8, it is convenient to utilize the works such as spanner
Tool is rotated to regulating bolt 8, and then whole governor motion is adjusted.
It is axially arranged on the side wall of one end of the contact of mandrel 15 regulating bolt 8 to have the first groove 11, the knife bar sheet
The adjustable side of body 1 is additionally provided with the second pilot hole 4 corresponding with first groove 11, second pilot hole 4 and set
There is spindle Lock to press closer silk, the lower end that the spindle Lock presses closer silk is inserted into the first groove 11, when regulating bolt 8 holds out against mandrel 15
During axial movement, the spindle Lock, which presses closer silk, can prevent the Effect of Rotation degree of regulation of mandrel 15, and the first groove 11 and mandrel
Locking jackscrew is engaged with the limit function to the shaft orientation moving range of mandrel 15, prevents mandrel 15 from moving axially excessive to device
Cause to damage.
The installation end of the cutter bar body 1 is provided with push rod 13, and the push rod 13 is fixedly installed in centre bore 14, described
Spring 12 is provided between the other end and push rod 13 of mandrel 15, when regulating bolt 8 is moved to the regulation extreme direction of cutter bar body 1
When, the screen resilience of spring 12 makes mandrel 15 be moved with the movement of regulating bolt 8, facilitates the regulation of whole device；Knife bar sheet
The installation end of body 1 is additionally provided with the ring flange 6 for connecting machine tool output end, facilitates dismounting of the whole hinge top gem of a girdle-pendant bar on lathe
Install.
In use, the aperture of processing endoporus is rotated using Wrench to regulating bolt 8 as needed first, adjust
Bolt 8 holds out against mandrel 15 and moved axially, and the tapered design at the middle part of mandrel 15 opens honing base 2, by continuous
Rotation regulating bolt 8 reaches the standard of demand；Then the ring flange 6 of installation end and the ring flange on lathe are connected by bolt
Connect, complete the installation of honing lever, you can the grinding of the aperture inner bore of part is carried out using honing lever；When regulating bolt 8 because
The Screw Thread Fit Clearance of often twisting abrasion, regulating bolt 8 and silk braid 7 becomes big, when governor motion loses original precision, it is only necessary to
Regulating bolt 8 and silk braid 7 are changed, it is not necessary to expensive mandrel 15 is changed, is very convenient to,
And it is cheap, original precision of governor motion is not influenceed.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to foregoing embodiments, it will be understood by those within the art that：It is still
Technical scheme described in previous embodiment can be modified, or which part or all technical characteristic are carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from technical scheme of the embodiment of the present invention
Scope.
Claims (8)
1. a kind of hinge top gem of a girdle-pendant bar of threaded adjusting, including cutter bar body, axially penetrate through in the adjustable side and installation end of cutter bar body
The honing base that middle part is tapered mandrel, is arranged in cutter bar body and is engaged with mandrel in heart hole, centrally disposed hole
And it is arranged on the hone stone on honing base, it is characterised in that：The adjustable side of the cutter bar body is provided with silk braid, the silk
Set and the centre bore coaxial line, the adjustable side of the cutter bar body are additionally provided with regulating bolt, and the regulating bolt is arranged on
In centre bore, one end of regulating bolt is engaged with silk braid, and the other end and the mandrel of regulating bolt are located at cutter bar body adjustable side
One end be in contact.
2. the hinge top gem of a girdle-pendant bar of threaded adjusting as claimed in claim 1, it is characterised in that：The installation end of the cutter bar body is provided with
In push rod, the centrally disposed hole of push rod, spring is provided between the other end and push rod of the mandrel.
3. the hinge top gem of a girdle-pendant bar of threaded adjusting as claimed in claim 2, it is characterised in that：The adjustable side of the cutter bar body and silk braid
On be provided with the first corresponding pilot hole, the silk braid is locked jackscrew by the silk braid being engaged with first pilot hole and consolidated
It is scheduled in cutter bar body.
4. the hinge top gem of a girdle-pendant bar of threaded adjusting as claimed in claim 3, it is characterised in that：The mandrel contacts the regulating bolt
Axially arranged on the side wall of one end to have the first groove, the adjustable side of the cutter bar body is additionally provided with relative with first groove
Spindle Lock is provided with the second pilot hole answered, second pilot hole and presses closer silk, and spindle Lock presses closer silk and is inserted into the first groove
In be used for prevent mandrel from rotating.
5. the hinge top gem of a girdle-pendant bar of the threaded adjusting as described in claim 1-4 is any, it is characterised in that：The regulating bolt is " convex " type
Structure, one end end that the mandrel contacts the regulating bolt is provided with second be engaged with the top of the regulating bolt
Groove.
6. the hinge top gem of a girdle-pendant bar of threaded adjusting as claimed in claim 5, it is characterised in that：Being additionally provided with the regulating bolt is used for
Rotate the spanner position hole of regulating bolt.
7. the hinge top gem of a girdle-pendant bar of threaded adjusting as claimed in claim 6, it is characterised in that：The two ends of the honing base pass through respectively
Extension spring is arranged in cutter bar body.
8. the hinge top gem of a girdle-pendant bar of threaded adjusting as claimed in claim 7, it is characterised in that：The installation end of the cutter bar body is provided with
Ring flange for connecting machine tool output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710192119.7A CN107009259A (en) | 2017-03-28 | 2017-03-28 | A kind of hinge top gem of a girdle-pendant bar of threaded adjusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710192119.7A CN107009259A (en) | 2017-03-28 | 2017-03-28 | A kind of hinge top gem of a girdle-pendant bar of threaded adjusting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107009259A true CN107009259A (en) | 2017-08-04 |
Family
ID=59445857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710192119.7A Pending CN107009259A (en) | 2017-03-28 | 2017-03-28 | A kind of hinge top gem of a girdle-pendant bar of threaded adjusting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107009259A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931723A (en) * | 2017-12-12 | 2018-04-20 | 苏州信能精密机械有限公司 | A kind of stepped hole honing reamer |
| CN112276236A (en) * | 2020-10-19 | 2021-01-29 | 浙大宁波理工学院 | Honing reamer |
| CN113664708A (en) * | 2021-09-26 | 2021-11-19 | 江苏耐尔特钻石有限公司 | Adjustable honing rod for blind hole |
| CN114310648A (en) * | 2022-01-10 | 2022-04-12 | 常州凯瑞莱精密工具有限公司 | Multi-stage adjustable reaming and honing tool |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH649939A5 (en) * | 1980-10-10 | 1985-06-28 | Alfred Rohr | Tool for honing bores |
| CN2645850Y (en) * | 2003-10-21 | 2004-10-06 | 哈尔滨飞机工业(集团)有限责任公司 | Diameter altering honing knife |
| CN2748221Y (en) * | 2004-10-22 | 2005-12-28 | 吴国生 | Honing knife bar with replaceable honing sleeve |
| CN202388459U (en) * | 2011-12-22 | 2012-08-22 | 湖北北辰汽车转向***有限公司 | Special device for disassembling bearing of power steering gear valve body |
| CN202861542U (en) * | 2012-10-30 | 2013-04-10 | 长泰县海力机械制造有限公司 | Adjustable reamer |
| CN203936761U (en) * | 2014-06-10 | 2014-11-12 | 江苏瑞普机床有限公司 | A kind of hinge top gem of a girdle-pendant cutter that can threaded adjusting |
| CN204397105U (en) * | 2014-12-08 | 2015-06-17 | 赵钱 | The tailfiber fixed mechanism of a kind of cylinder |
| CN205732779U (en) * | 2016-07-14 | 2016-11-30 | 山东千里马锻压自动化设备有限公司 | A kind of full-automatic forging roll mould fixed mechanism |
| CN206811731U (en) * | 2017-03-28 | 2017-12-29 | 郑州市钻石精密制造有限公司 | A kind of hinge top gem of a girdle-pendant bar of threaded adjusting |
-
2017
- 2017-03-28 CN CN201710192119.7A patent/CN107009259A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH649939A5 (en) * | 1980-10-10 | 1985-06-28 | Alfred Rohr | Tool for honing bores |
| CN2645850Y (en) * | 2003-10-21 | 2004-10-06 | 哈尔滨飞机工业(集团)有限责任公司 | Diameter altering honing knife |
| CN2748221Y (en) * | 2004-10-22 | 2005-12-28 | 吴国生 | Honing knife bar with replaceable honing sleeve |
| CN202388459U (en) * | 2011-12-22 | 2012-08-22 | 湖北北辰汽车转向***有限公司 | Special device for disassembling bearing of power steering gear valve body |
| CN202861542U (en) * | 2012-10-30 | 2013-04-10 | 长泰县海力机械制造有限公司 | Adjustable reamer |
| CN203936761U (en) * | 2014-06-10 | 2014-11-12 | 江苏瑞普机床有限公司 | A kind of hinge top gem of a girdle-pendant cutter that can threaded adjusting |
| CN204397105U (en) * | 2014-12-08 | 2015-06-17 | 赵钱 | The tailfiber fixed mechanism of a kind of cylinder |
| CN205732779U (en) * | 2016-07-14 | 2016-11-30 | 山东千里马锻压自动化设备有限公司 | A kind of full-automatic forging roll mould fixed mechanism |
| CN206811731U (en) * | 2017-03-28 | 2017-12-29 | 郑州市钻石精密制造有限公司 | A kind of hinge top gem of a girdle-pendant bar of threaded adjusting |
Non-Patent Citations (1)
| Title |
|---|
| 谢缅纽克等: "谷物联合收获机的修理", 农业出版社, pages: 127 - 181 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931723A (en) * | 2017-12-12 | 2018-04-20 | 苏州信能精密机械有限公司 | A kind of stepped hole honing reamer |
| CN112276236A (en) * | 2020-10-19 | 2021-01-29 | 浙大宁波理工学院 | Honing reamer |
| CN112276236B (en) * | 2020-10-19 | 2021-09-14 | 浙大宁波理工学院 | Honing reamer |
| CN113664708A (en) * | 2021-09-26 | 2021-11-19 | 江苏耐尔特钻石有限公司 | Adjustable honing rod for blind hole |
| CN114310648A (en) * | 2022-01-10 | 2022-04-12 | 常州凯瑞莱精密工具有限公司 | Multi-stage adjustable reaming and honing tool |
| CN114310648B (en) * | 2022-01-10 | 2022-11-22 | 常州凯瑞莱精密工具有限公司 | Multi-stage adjustable reaming and honing tool |
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