CN202964386U - Floating finishing grinding head with controllable grinding force - Google Patents
Floating finishing grinding head with controllable grinding force Download PDFInfo
- Publication number
- CN202964386U CN202964386U CN 201220533256 CN201220533256U CN202964386U CN 202964386 U CN202964386 U CN 202964386U CN 201220533256 CN201220533256 CN 201220533256 CN 201220533256 U CN201220533256 U CN 201220533256U CN 202964386 U CN202964386 U CN 202964386U
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- CN
- China
- Prior art keywords
- bistrique
- grinding
- polishing
- grinding force
- finishing
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- 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
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Abstract
The utility model relates to a floating finishing grinding head with a controllable grinding force. The floating finishing grinding head comprises a grinding head body, a grinding tool head floatingly connected to the front end of the grinding head body, a drive mechanism arranged at the rear end of the grinding head body and a grinding pressure control element, wherein a pressure cavity filled with compressed air is formed in the grinding head body. The balance condition Fp=Fm-Fg is met, wherein Fp is the system pressure (provided by the compressed air and controlled by the grinding pressure control element), Fm is the grinding force, and Fg is force of gravity and friction force of motion parts. According to the floating finishing grinding head structured by the compressed air, a compensation spring and the pressure control regulation element, different finishing tools are selected and used, so that different finishing processes such as precision grinding, grinding, polishing and the like can be finished and the tool abrasion in the finishing process can be automatically compensated; and the finishing tools are subjected to motion trajectory planning by CAD/CAM (computer aided design/computer aided manufacturing) software, and industrial robots or digital control machine tools are configured, so that complicated profiles can be automatically finished, the finishing efficiency and quality of the complicated profiles can be greatly improved, and the passive situation that profiles of complicated parts are manually finished by experienced technicians only at present can be got rid of.
Description
Technical field
The utility model is a kind of unsteady polishing processing grinding head device of controlled grinding force, is applicable to the different finishing process such as accurate grinding, grinding and polishing, relates to the technical field of Complex Surface Part polishing processing.
Background technology
Polishing processing is to improve part to be processed object surface quality, improves a kind of processing technology of functional reliability and working life, can make Part Surface Roughness reach even nano-precision hierarchy level of micron, sub-micron.Polishing is processed with traditional machinery polishing techniques such as accurate grinding, grinding, polishing, have also that development in recent years gets up as non-traditional finishing process technology such as ultrasonic wave, electron beam, laser beam, electrochemistry, magnetic fluids.Due to present some non-traditional technologies also more difficult accurate control part geometric accuracy and affected by condition element also to be difficult to guarantee its job stability.Thereby within even following a period of time at present, the polishing processing of Complex Surface Part is still take traditional mechanical type finishing process as main.
No matter be these traditional mechanical type finishing process such as grinding or polishing, except requiring to have correct location, position processing object, also require the polishing machining tool can apply constant contact force on each processing stand.Satisfy simultaneously above-mentioned two requirements due to more difficult, therefore mostly or by the experienced operator rely on the skills and experience of self to carry out manual operations to some polishing processing as Complex Surface Parts such as mold cavity, turbine blades at present, its work workload is large, and the production cycle is long.Grinding and polishing amount as mold cavity often account for 30% ~ 80% of whole Mould Machining workload, and work under bad environment, and surface quality stability is difficult to guarantee.
The utility model content
The utility model is for the deficiencies in the prior art, a kind of unsteady polishing processing bistrique of controlled grinding force has been proposed, this bistrique can be used different polishing machining tools, automatically completes the different finishing process such as accurate grinding, grinding, polishing of Complex Surface Part.
The technical solution of the utility model is: comprise the bistrique body, floating connection forms at the grinding tool head of bistrique body front end, the driving mechanism and the grinding force control element that are arranged on bistrique body rear end, be provided with a logical compressed-air actuated pressure chamber in described bistrique body, satisfy following equilibrium condition:
F
p=F
m-F
g
F in formula
pBe system pressure (compressed air provides); F
mBe grinding force; F
gBe the frictional force that produces between gravity and each moving component;
F wherein
pControl its size by the grinding force control element, the grinding force control element is pressure regulator, pressure regulator optional with electric Proportion valve or adjustable gas pressure valve to control F
pSize.
Described bistrique body is comprised of rolling spline axle, spline housing, bistrique shell, connection base, counterbalance spring and end cap: the rolling spline cover is fixedly arranged in the bistrique shell, and the rolling spline axle is removably set in spline housing; An end that connects base is for by bolt and rolling spline overlaps and the bistrique shell connects firmly composition surface, the other end is staight shank or the taper shank that is connected with driving mechanism, connection base inside is provided with a vestibule that is slidingly fitted with rolling spline shaft end axle journal, and this vestibule has the passage that communicates with the external compression air;
On the basis of the above, the utility model further can be established counterbalance spring in the bistrique body, counterbalance spring is located on rolling spline multidiameter between end cap and the rolling spline shaft shoulder [w1], the grinding force control element is pressure regulator, pressure regulator optional with electric Proportion valve or adjustable gas pressure valve to control F
pSize.
Described driving mechanism comprises the electric main shaft that the High Rotation Speed of the connector that is connected with the bistrique body and hollow structure drives, and electric main shaft tail is provided with the swivel joint that is connected with external compression air input pipe.
Polishing grinding tool head is comprised of dish type polishing grinding tool and footstalk, and grinding tool and footstalk are for being articulated and connected, and footstalk connects firmly in the splined shaft central shaft hole of bistrique body by collet.
The utility model has the advantages that: the utility model is by compressed air, counterbalance spring, the constructed unsteady polishing bistrique of controlled grinding force of pressure control and regulation element, by selecting of different polishing machining tools, can complete the different finishing process such as accurate grinding, grinding, polishing, tool wear that can auto-compensation polishing process; Carry out the movement locus planning of finishing tool by CAD/CAM software, allied industry robot or Digit Control Machine Tool, can realize the automatic polishing processing to complex profile, complex profile polishing working (machining) efficiency and crudy can be greatly improved, the current passive situation that has the experience skilled worker to be engaged in by hand the processing of complex parts profile polishing that only relies on can be broken away from.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the utility model grinding machine head force diagram.
In figure, 1 is that finishing tool, 2 is that end cap, 3 is that rolling spline axle, 4 is that spline housing, 5 is that connection handle of a knife, 6 is that electric main shaft, 7 is that swivel joint, 8 is that compressed air input channel, 9 is that counterbalance spring, 10 is the connection base.
The specific embodiment
The utility model describes as an example with example most preferably, in order to better understand the utility model.
The unsteady polishing processing of the controlled grinding force of the utility model bistrique comprises that structurally bistrique body, High Rotation Speed drive electric main shaft 6, control pressurer system and unsteady finishing tool 1.
The bistrique body is comprised of rolling spline axle 3, spline housing 4, bistrique shell, counterbalance spring 9, connection base 10 and end cap 2.Rolling spline cover 4 is fixedly arranged in the bistrique shell, rolling spline axle 3 is arranged in spline housing 4, can overlap 4 axis along rolling spline moves around, connect base 10 by bolt and rolling spline overlap 4 and the bistrique shell connect firmly, counterbalance spring 9 is located on the multidiameter of rolling spline axle 3, and is subject to the shaft shoulder constraint of end cap 2 and rolling spline axle 3.
Connection base 10 ends provide the hollow that is connected with drive motors handle of a knife, and this handle of a knife can be staight shank, BT handle of a knife (7:24 tapering), HSK handle of a knife or other Knife handle structure; One cylindrical bore that matches with rolling spline axle 3 end axle journals is arranged connecting base 10 inside, this vestibule communicates with the centre bore of hollow handle of a knife, the compressed air of acceptance outside and form a pressure chamber.The moving range of rolling spline axle 3 in spline housing 4 is subject to the splined shaft 3 front end shaft shoulders and end cap 2 and the rear end shaft shoulder and is connected base 10 inner faces restrictions.
It is hollow structure that High Rotation Speed drives electric main shaft 6, for compressed air provides an input channel, its front end provides the syndeton that matches with bistrique body Knife handle structure, its afterbody is provided with the swivel joint 7 that is connected with external compression air input pipe, rotates with electric main shaft 6 not cause external compression air input channel 8.
The finishing tool 1 that floats is comprised of a footstalk and finishing tool wheel, and footstalk is connected with the finishing tool wheel by universal coupling, and the finishing tool wheel can be accurate emery wheel, abrasive wheel, polishing wheel etc.
Control pressurer system comprises that counterbalance spring 9, pressure chamber, compressed air input channel 8 and pressure control and regulation element form, and pressure control and regulation element can be selected adjustable gas pressure valve or electric Proportion valve etc.
Control pressurer system provides the effect of two aspects for polishing processing bistrique:
On the one hand: for polishing processing provides constant operating pressure.During bistrique work, the pressure equilibrium equation of system is as follows:
F
p=F
m+F
h-F
g （*）
In formula, F
mBe grinding force; F
pBe system pressure; F
hBe counterbalance spring power; F
gBe gravity and moving component frictional force.
With counterbalance spring power F
hBe set to and F
gClose, the grinding force F of polishing processing so
mJust with the pressure F of default
pIdentical.Polishing adds man-hour, makes grinding force that increase tendency be arranged if affected by the factors such as stock removal, material, at this moment F
mF
p, will force finishing tool 1 along the bistrique axis away from workpiece to be machined, cause stock removal to reduce, cause simultaneously grinding force to reduce, until F
m=F
pTill; If grinding force has the trend of reducing, this moment F
m＜F
p, will force finishing tool 1 further to cut workpiece to be machined along the bistrique axis, cause stock removal to strengthen, cause simultaneously grinding force to strengthen, until F
m=F
p, the polishing process is worked under constant pressure always.
On the other hand: the wearing and tearing of compensation finishing tool.In the course of work, bistrique is being removed outside unnecessary processed subject material, and finishing tool 1 self constantly shortens its length also constantly consuming, and meanwhile its stock removal and grinding force also reduce thereupon, have broken the system force equilibrium condition.Under this state, the constant pressure that system supplies with will be ordered about rolling spline axle drive finishing tool 1 and be carried out motion compensation with respect to processed object, make system reach new grinding force equilibrium condition.The utility model finishing tool 1 wear-compensating amount is L=10-12mm.Should be noted, increase spring force F with wear-compensating amount L
h=kL follows increase, by formula (*) as can be known spring force increase and will cause grinding force F
mReduce, its coefficient of elasticity k should not get greatly when spring 9 design for this reason, with the consumption of finishing tool, large fluctuation is arranged not cause grinding force.
Claims (7)
1. the unsteady polishing of controlled grinding force is processed bistrique, it is characterized in that, comprise the bistrique body, floating connection forms at the grinding tool head of bistrique body front end, the driving mechanism and the grinding force control element that are arranged on bistrique body rear end, be provided with a logical compressed-air actuated pressure chamber in described bistrique body, satisfy following equilibrium condition:
F
p=F
m-F
g
F in formula
pBe system pressure (compressed air provides); F
mBe grinding force; F
gThe frictional force that produces each other for gravity, each moving component;
F wherein
pControl its size by the grinding force control element.
2. the unsteady polishing of a kind of controlled grinding force according to claim 1 is processed bistrique, it is characterized in that, described bistrique body is comprised of rolling spline axle, spline housing, bistrique shell, connection base and end cap: the rolling spline cover is fixedly arranged in the bistrique shell, and the rolling spline axle is removably set in spline housing; An end that connects base is for by bolt and rolling spline overlaps and the bistrique shell connects firmly composition surface, the other end is staight shank or the taper shank that is connected with driving mechanism, connection base inside is provided with a vestibule that is slidingly fitted with rolling spline shaft end axle journal, and this vestibule has the passage that communicates with the external compression air.
3. the unsteady polishing of controlled grinding force is processed bistrique, it is characterized in that, comprise the bistrique body, floating connection forms at the grinding tool head of bistrique body front end, the driving mechanism and the grinding force control element that are arranged on bistrique body rear end, be provided with a logical compressed-air actuated pressure chamber and counterbalance spring in described bistrique body, satisfy following equilibrium condition:
F
p=F
m+F
h-F
g
F in formula
pBe system pressure (compressed air provides); F
mBe grinding force; F
gThe frictional force, the F that produce each other for gravity, each moving component
hBe counterbalance spring power;
F wherein
pControl its size by the grinding force control element.
4. the unsteady polishing of a kind of controlled grinding force according to claim 3 is processed bistrique, it is characterized in that, described bistrique body is comprised of rolling spline axle, spline housing, bistrique shell, connection base, counterbalance spring and end cap: the rolling spline cover is fixedly arranged in the bistrique shell, and the rolling spline axle is removably set in spline housing; An end that connects base is for by bolt and rolling spline overlaps and the bistrique shell connects firmly composition surface, the other end is staight shank or the taper shank that is connected with driving mechanism, connection base inside is provided with a vestibule that is slidingly fitted with rolling spline shaft end axle journal, and this vestibule has the passage that communicates with the external compression air; Counterbalance spring is located on rolling spline multidiameter between end cap and the rolling spline shaft shoulder.
5. the unsteady polishing of according to claim 1 or 3 described a kind of controlled grinding forces is processed bistrique, it is characterized in that, described driving mechanism comprises the electric main shaft that the High Rotation Speed of the connector that is connected with the bistrique body and hollow structure drives, and electric main shaft tail is provided with the swivel joint that is connected with external compression air input pipe.
6. the unsteady polishing of according to claim 1 or 3 described a kind of controlled grinding forces is processed bistrique, it is characterized in that, polishing grinding tool head is comprised of dish type polishing grinding tool and footstalk, grinding tool and footstalk are for being articulated and connected, and footstalk connects firmly in the splined shaft central shaft hole of bistrique body by collet.
7. the unsteady polishing processing of a kind of controlled grinding force according to claim 2 bistrique, is characterized in that, the grinding force control element is pressure regulator, and pressure regulator is optional with electric Proportion valve or adjustable gas pressure valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533256 CN202964386U (en) | 2012-10-18 | 2012-10-18 | Floating finishing grinding head with controllable grinding force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533256 CN202964386U (en) | 2012-10-18 | 2012-10-18 | Floating finishing grinding head with controllable grinding force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202964386U true CN202964386U (en) | 2013-06-05 |
Family
ID=48505515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220533256 Expired - Fee Related CN202964386U (en) | 2012-10-18 | 2012-10-18 | Floating finishing grinding head with controllable grinding force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202964386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522176A (en) * | 2012-10-18 | 2014-01-22 | 江苏省（扬州）数控机床研究院 | Floating finishing-machining grinding head with controllable grinding force |
-
2012
- 2012-10-18 CN CN 201220533256 patent/CN202964386U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522176A (en) * | 2012-10-18 | 2014-01-22 | 江苏省（扬州）数控机床研究院 | Floating finishing-machining grinding head with controllable grinding force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131018 |