CN109590767A - Fixture with force measuring function - Google Patents
Fixture with force measuring function Download PDFInfo
- Publication number
- CN109590767A CN109590767A CN201811425909.6A CN201811425909A CN109590767A CN 109590767 A CN109590767 A CN 109590767A CN 201811425909 A CN201811425909 A CN 201811425909A CN 109590767 A CN109590767 A CN 109590767A
- Authority
- CN
- China
- Prior art keywords
- block
- type seat
- load cell
- piezoelectric patches
- fixture
- 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
- 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
-
- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
The invention discloses a kind of fixture with force measuring function, the technical issues of the practicability is poor for solving existing fixture.Technical solution is that the fixture includes pedestal and load cell, the load cell is made of V-type seat, PVDF piezoelectric patches and V-block, there are two V-type seat inclined-planes and installation threaded hole on V-type seat, there are two V-block inclined-planes for the left side of V-block, the right side of V-block is cylindrical surface, when dynamometry, cylindrical surface is contacted with the workpiece surface being supported.V-block and V-type seat are linked together and compress PVDF piezoelectric patches.There are the groove and metallic channel with load cell cooperation on the pedestal, metallic channel is used to draw the conducting wire of PVDF piezoelectric patches.Groove on the load cell and pedestal is interference fitted installation.The multiple fixtures of the present invention use simultaneously, according to each fixture in the position in space and the size and Orientation of measured power, by the synthesis of power, uniquely determine the size and Orientation for acting on cutting force on workpiece, practicability is good.
Description
Technical field
The present invention relates to a kind of fixtures, more particularly to a kind of fixture with force measuring function.
Background technique
Document " Design, development and testing of a four-component milling
dynamometer for the measurement of cutting force and torque,Mechanical
Systems and Signal Processing, Vol21 (3), p1499-1511 ", which discloses one kind, can measure cutting force
Ergograph.The ergograph measures cutting force by supporting 8 angular strain rings of ergograph table top, when measuring cutting force, workpiece dress
Be clipped on the ergograph table top, but limited by ergograph mesa dimensions, the ergograph can only clamping it is smaller than ergograph mesa dimensions
Workpiece.Large-scale integral structure component size is larger, and structure is complicated, and stiffness variation is big, and mostly thin-wall construction, cannot be mounted on
Cutting force measurement is carried out on ergograph.But in its Milling Processes, since the selection of clamping point position is unreasonable, or cutting
Parameter selection is unreasonable, causes workpiece in Milling Processes that moderate finite deformation occurs, seriously affects processing quality and efficiency.In order to
Processing quality is improved, needs to measure cutting force in its process, for process control and clamping cloth
The optimization such as office, machined parameters.
Summary of the invention
In order to overcome the shortcomings of existing fixture, the practicability is poor, and the present invention provides a kind of fixture with force measuring function.The fixture
Including pedestal and load cell, the load cell is made of V-type seat, PVDF piezoelectric patches and V-block, and there are two V on V-type seat
Type seat inclined-plane and installation threaded hole, there are two V-block inclined-planes for the left side of V-block, and the right side of V-block is cylindrical surface, survey
When power, cylindrical surface is contacted with the workpiece surface being supported.Screw is cooperated by the countersunk head through-hole in V-block with threaded hole, by V
Type block is linked together with V-type seat, and compresses PVDF piezoelectric patches.There are the groove and conducting wire with load cell cooperation on the pedestal
Slot, metallic channel are used to draw the conducting wire of PVDF piezoelectric patches.Groove on the load cell and pedestal is interference fitted installation.This
It invents multiple fixtures while using, according to each fixture in the position in space and the size and Orientation of measured power, pass through power
Synthesis, uniquely determine the size and Orientation for acting on cutting force on workpiece, practicability is good.
The technical solution adopted by the present invention to solve the technical problems is: a kind of fixture with force measuring function, its main feature is that
Including pedestal 7 and load cell 1, the load cell 1 is made of V-type seat 5, PVDF piezoelectric patches 3,4 and V-block 2, V-type seat 5
It is upper that there are two V-type seat inclined-plane 501,502 and threaded hole 503, the one side cooperations on V-type seat inclined-plane 501,502 and PVDF piezoelectric patches 3,4
Installation.There are two V-block inclined-plane 201,202, V-block inclined-plane 201,202 is another with PVDF piezoelectric patches 3,4 for the left side of V-block 2
It is coupled on one side, the right side of V-block 2 is cylindrical surface, and when dynamometry, cylindrical surface is contacted with the workpiece surface being supported, V
There is perforative countersunk head through-hole 203 on type block 2.Screw 6 passes through the threaded hole on the countersunk head through-hole 203 and V-type seat 5 in V-block 2
503 cooperations, V-block 2 and V-type seat 5 are linked together, and compress PVDF piezoelectric patches 3,4.Have on the pedestal 7 and dynamometry list
The groove 701 and metallic channel 702 of 1 cooperation of member, metallic channel 702 are used to draw the conducting wire of PVDF piezoelectric patches 3,4.The dynamometry list
Member 1 is interference fitted with the groove 701 on pedestal 7 and installs.3,4 place plane of PVDF piezoelectric patches is not parallel.
The beneficial effects of the present invention are: the fixture includes pedestal and load cell, the load cell by V-type seat,
PVDF piezoelectric patches and V-block are constituted, and there are two V-type seat inclined-planes and installation threaded hole on V-type seat, and there are two V for the left side of V-block
Type block inclined-plane, the right side of V-block are cylindrical surfaces, and when dynamometry, cylindrical surface is contacted with the workpiece surface being supported.Screw is logical
The countersunk head through-hole and threaded hole crossed in V-block cooperate, and V-block and V-type seat are linked together, and compress PVDF piezoelectric patches.It is described
Pedestal on have groove and metallic channel with load cell cooperation, metallic channel is used to draw the conducting wire of PVDF piezoelectric patches.Described
Groove on load cell and pedestal, which is interference fitted, to be installed.The multiple fixtures of the present invention use simultaneously, according to each fixture in space
Position and the size and Orientation of measured power the size for acting on cutting force on workpiece is uniquely determined by the synthesis of power
And direction, practicability are good.
It elaborates with reference to the accompanying drawings and detailed description to the present invention.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the fixture of the invention with force measuring function.
Fig. 2 is the assembly perspective view of the explosion of Fig. 1.
Fig. 3 is the structural schematic diagram of Fig. 1 other direction.
Fig. 4 is the A-A cross-sectional view of Fig. 3.
In figure, 1- load cell, 2-V type block, 201,202-V type block inclined-planes, 203- countersunk head through-hole, 3,4-PVDF piezoelectricity
Piece, 5-V type seat, 501,502-V type seat inclined-planes, 503- threaded hole, 6- screw, 7- pedestal, 701- groove, 702- metallic channel.
Specific embodiment
Following embodiment is referring to Fig.1~4.
Fixture of the present invention with force measuring function, OO be entire fixture center line, load cell 1 and by interference fit peace
In pedestal 7.Load cell 1 includes V-block 2, and right side is the cylindrical surface contacted with the workpiece surface being supported, left
End face is the V-block inclined-plane 201,202 of two with the cooperation contact of PVDF piezoelectric patches 3,4.There is V-block 2 countersunk head through it to lead to
Hole 203.V-type seat 5, there are two the V-type seat inclined-planes 501,502 and installation threaded hole with the cooperation contact of PVDF piezoelectric patches 3,4 thereon
503.Screw 6 is cooperated by the countersunk head through-hole 203 in V-block 2 with threaded hole 503, is passed through connection V-block 2 and V-type seat 5, is compressed
PVDF piezoelectric patches 3,4.In order to make the work of PVDF piezoelectric patches 3,4 in the linear range, it is non-to eliminate to need to apply certain precompressed value
Linear contact gap, this process are tightened screw 6 by torque wrench and are realized.
There are the groove 701 cooperated with load cell 1, and the conducting wire for drawing 3,4 conducting wire of PVDF piezoelectric patches on pedestal 7
Slot 702.
Ll is the face vertical with center line OO, and angle formed by PVDF piezoelectric patches 3 and ll plane is a, PVDF piezoelectric patches 4 with
Angle formed by ll plane is b, and angle a and b size can be different, and angle a and b angle are advisable between 30 ° to 45 °.
The place plane of PVDF piezoelectric patches 3,4 is not parallel, they are by the effect of contraction of V-block 2 and V-type seat 5 in space
The middle positional relationship that V-type is presented.The contact force in cylindrical surface is acted on, PVDF piezoelectric patches 3,4 is transmitted to by V-block 2,
The size for the pressure that PVDF piezoelectric patches 3,4 is subject to is directly proportional to its output charge, and direction is perpendicular to 3,4 place of PVDF piezoelectric patches
Plane.According to the synthesis and decomposition of power, obtain acting on the size and Orientation of power in cylindrical surface.
The present invention also provides a kind of force measuring methods.
Several fixtures of (at least three) with force measuring function are provided；
The cylindrical surface of multiple fixtures with force measuring function is contacted with structure is supported, contact surface should have certain contact
Pressure, the fixture can measure the variation of the contact force as caused by cutting force.
According to each fixture with force measuring function in the position in space and the size and Orientation of measured power, pass through power
Synthesis, the cutting force size and Orientation acted on workpiece can be uniquely determined.
Claims (1)
1. a kind of fixture with force measuring function, it is characterised in that: including pedestal (7) and load cell (1), the load cell
(1) be made of V-type seat (5), PVDF piezoelectric patches (3,4) and V-block (2), on V-type seat (5) there are two V-type seat inclined-plane (501,
502) it is coupled on one side with threaded hole (503), V-type seat inclined-plane (501,502) with PVDF piezoelectric patches (3,4)；V-block (2)
Left side there are two V-block inclined-plane (201,202), the another side of V-block inclined-plane (201,202) and PVDF piezoelectric patches (3,4)
It is coupled, the right side of V-block (2) is cylindrical surface, and when dynamometry, cylindrical surface is contacted with the workpiece surface being supported, V-type
There is perforative countersunk head through-hole (203) on block (2)；Screw (6) passes through on the countersunk head through-hole (203) and V-type seat (5) in V-block (2)
Threaded hole (503) cooperation, V-block (2) and V-type seat (5) are linked together, and compress PVDF piezoelectric patches (3,4)；The bottom
There are the groove (701) and metallic channel (702) with load cell (1) cooperation on seat (7), metallic channel (702) is for drawing PVDF pressure
The conducting wire of electric piece (3,4)；Groove (701) on the load cell (1) and pedestal (7), which is interference fitted, to be installed；PVDF piezoelectricity
Plane where piece (3,4) is not parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811425909.6A CN109590767B (en) | 2018-11-27 | 2018-11-27 | Clamp with force measuring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811425909.6A CN109590767B (en) | 2018-11-27 | 2018-11-27 | Clamp with force measuring function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109590767A true CN109590767A (en) | 2019-04-09 |
| CN109590767B CN109590767B (en) | 2021-05-07 |
Family
ID=65959705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811425909.6A Expired - Fee Related CN109590767B (en) | 2018-11-27 | 2018-11-27 | Clamp with force measuring function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109590767B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111141324A (en) * | 2019-12-25 | 2020-05-12 | 北京工研精机股份有限公司 | Workpiece in-place detection system using electric signals |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1261662A (en) * | 1999-01-20 | 2000-08-02 | 大连理工大学 | Integrated piezoelectric-quartz three-way milling, grinding and cutting dinamometric instrument |
| WO2009128693A1 (en) * | 2008-04-16 | 2009-10-22 | Tubos De Acero De Mexico, S.A. | P-type piezoresistive resonant microsensor for measuring magnetic fields |
| CN201589674U (en) * | 2009-08-10 | 2010-09-22 | 德立斯科技股份有限公司 | Piezoelectric pipe pressure measuring clamp improved structure |
| CN103447860A (en) * | 2013-08-27 | 2013-12-18 | 西北工业大学 | Clamp for measuring milling force for milling and processing blade fixed inclining angle |
| CN104913865A (en) * | 2014-03-12 | 2015-09-16 | 鸿富锦精密工业（深圳）有限公司 | Multi-dimensional force/torque sensor |
-
2018
- 2018-11-27 CN CN201811425909.6A patent/CN109590767B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1261662A (en) * | 1999-01-20 | 2000-08-02 | 大连理工大学 | Integrated piezoelectric-quartz three-way milling, grinding and cutting dinamometric instrument |
| WO2009128693A1 (en) * | 2008-04-16 | 2009-10-22 | Tubos De Acero De Mexico, S.A. | P-type piezoresistive resonant microsensor for measuring magnetic fields |
| CN201589674U (en) * | 2009-08-10 | 2010-09-22 | 德立斯科技股份有限公司 | Piezoelectric pipe pressure measuring clamp improved structure |
| CN103447860A (en) * | 2013-08-27 | 2013-12-18 | 西北工业大学 | Clamp for measuring milling force for milling and processing blade fixed inclining angle |
| CN104913865A (en) * | 2014-03-12 | 2015-09-16 | 鸿富锦精密工业（深圳）有限公司 | Multi-dimensional force/torque sensor |
Non-Patent Citations (1)
| Title |
|---|
| 蔡扬璋: "新型切削力测力计", 《机械制造》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111141324A (en) * | 2019-12-25 | 2020-05-12 | 北京工研精机股份有限公司 | Workpiece in-place detection system using electric signals |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109590767B (en) | 2021-05-07 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210507 Termination date: 20211127 |