CN104330248B - The test device of linear compressor spiral flat spring axial rigidity and manufacture method - Google Patents
The test device of linear compressor spiral flat spring axial rigidity and manufacture method Download PDFInfo
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Abstract
The invention discloses test device and the manufacture method of a kind of linear compressor spiral flat spring axial rigidity, this test device is by upper cover, base, pull bar, outer washer, inner washer, clamp nut, outer pad, internal gasket forms, pass through invented test device and fix inner edge and the outer rim of spiral flat spring respectively, inner edge is made to be with the Impact direction of outer rim the most axial and the most parallel, the stress biasing produced when eliminating spiral flat spring test axial rigidity to greatest extent and Bending Deformation, to accurately measure flat spring displacement after axially loaded and corresponding intensity level and variation tendency, for the design of spiral flat spring with manufacture and provide the contrast of accurate measured data and reference frame, the most positive effect is all played in the development that spiral flat spring optimizes design or even linear compressor.
Description
Technical field
The present invention relates to linear compressor and flat spring thereof, particularly to a kind of linear compressor spiral flat spring
The test device of axial rigidity and manufacture method.
Background technology
Linear compressor, or claim Linearkompressor, it is a kind of reciprocating-piston compressor with innovation meaning.
It utilizes linear electric motors to drive piston to do reciprocating linear motion in the cylinder, completely eliminates piston in theory
Radial forces, thus also eliminate the mechanical wear between piston and cylinder wall and consequent nothing
Hard, working life and energy conversion efficiency all increase substantially, so the needs long-life, highly reliable and
The special dimensions such as the Aeronautics and Astronautics of efficiency operation, military affairs have very important application.Such as, at present
The two class long-life regenerating type low-temperature refrigerator pulse tube refrigeration that aerospace field is most widely used
Machine and sterlin refrigerator, the overwhelming majority uses linear compressor as its power source.
The linear compressor being applied to the fields such as Aero-Space in the world mainly uses Oxford type version.Institute
Meaning " Oxford type ", its gain the name come from Regius professor two important technology invention clearance seals and
Flat spring supports, and these two technology are that linear compressor realizes oil-free lubrication and can protect by the crucial of long-life operating
Barrier.
Gap sealed essence is to make to remain between the piston of motion and cylinder inner wall that small gap (claims
For air gap, thickness is micron dimension).Gap Sealing Technology replaces in contactless gas movable sealing mode
The sealed solid of contact, thus ingenious and solve up hill and dale contact wear between piston and cylinder with
And the pollution problem that the oil lubrication needed for Conventional solid sealing brings, for oil-free lubrication formula long-life straight line pressure
The influence on development of contracting machine is far-reaching.
The Main Function of flat spring support technology is the clearance seal needed for realization and long term maintenance.Flat spring one
As be made up of the thin spring leaf of a group or array, it is very big that these spring leafs are designed to rigidity diametrically, and
Upper rigidity is less.Piston shaft is fixed in the center of flat spring, ensures that piston begins in cylinder with this
The most axially movable, and offset the most diametrically, thus between strict guarantee piston and cylinder inner wall
Air gap thickness.
From above-mentioned discussion, flat spring plays the pivotal role of core, plate bullet in linear compressor technology
Spring design will directly influence gap sealed effect with the quality of workmanship, thus to linear compressor
Efficiency, reliability and working life all produce conclusive impact.
In practice, spiral flat spring is the flat spring type that linear compressor is the most commonly used, and it has several snails
Spiral arm forms, and is divided into the key positions such as spiral groove, outer rim, inner edge, centre bore and outer rim fixing hole.Spiral
Designing and developing of flat spring needs through complicated calculating and utilizes the method for modeling analysis to make structure obtain as far as possible
To optimizing, the key parameter values needed for obtaining.Before putting into practicality, in addition it is also necessary to designing and processing
The sample become carries out detailed check analysis and test, and contrast design calculates and model analysis, finds out material
Material and processing technique aspect problem that may be present, and obtain the feedback information structurally optimized further.
Among these, the measurement of axial rigidity and radial rigidity is two tests of non-the normally off key.
First the test of spiral flat spring axial rigidity requires inner edge and the outer rim of fixed plate spring respectively, keeps
Test the centrage of device and the perpendicularity of flat spring plane high-precision, suffered by such guarantee flat spring
Power is axial force.In test process, more want strict guarantee test device be applied to spiral flat spring inner edge and
Power in outer rim is all vertical with the plane of flat spring, and flat spring inner edge is the most parallel with the power suffered by outer rim,
Have certain deviation in the depth of parallelism if there is the two, then test value is it would appear that bigger error.Above-mentioned two
Require flat spring axial rigidity test device is proposed very strict requirement.Owing to long-life Oxford type is straight
The development at home of wire compression machine is also in the starting stage, so being used for the special of its spiral flat spring axial rigidity
The rarest with test device.
Summary of the invention
In view of this, the present invention propose a kind of linear compressor spiral flat spring axial rigidity test device and
Manufacture method.
It is an object of the invention to, pass through invented test device fix respectively spiral flat spring inner edge and
Outer rim, makes inner edge the most parallel with the two of outer rim Impact direction, and it is flat to be perpendicular to flat spring the most accurately
Face, in order to accurately measure flat spring displacement after axially loaded and corresponding intensity level and change
Trend, for spiral flat spring design and make provide accurate measured data to when reference.
The test device of the linear compressor spiral flat spring axial rigidity invented include upper cover 1, base 2,
Pull bar 3, outer washer 4, inner washer 5, clamp nut 6, outer pad 7, internal gasket 8, it is characterised in that:
Described upper cover 1 has along center for moving up and down of pull bar 3 is played the upper cover of guide effect and led
To hole 10, make on the upper cover lower end plane 13 of upper cover 1 and have and the upper cover back-up ring of base 2 location fit
Cylindrical 11, the outer rim at upper cover lower end plane 13 is machined with the upper cover fixing hole 12 of uniformly arrangement；
On the base of described base 2, the outer rim of transverse plane 14 is machined with on the base being used for fixing upper cover 1
End screwed hole 17, along base, transverse plane 14 processes downwards a step, outside being fabricated to upper cover back-up ring
The base location inner headed face 15 that circle 11 matches, the inside of base 2 is machined with for pacifying near centre position
Dress inner washer 5 and the base workpiece installed surface 16 of spiral flat spring 9, add on base workpiece installed surface 16
Work has the workpiece being used for fixing inner washer 5, spiral flat spring 9 and outer washer 4 to fix screwed hole 18,
The base lower end fixing hole being used for fixing whole axial rigidity detection device it is machined with on base lower end plane 19
20；
Processing a step near lower end position in the middle of described pull bar 3, the lower surface of step is pull bar pressure
Tight plane 23, is respectively pull bar lower end cylindrical 24 and pull bar lower end external screw thread under pull bar clamping plane 23
25；Internal gasket centre bore 28, flat spring centre bore 33 and outer pad centre bore 29 are sequentially sleeved under pull bar
On end cylindrical 24, and under the squeezing action of the clamp nut 6 being arranged on pull bar lower end external screw thread 25
Being fixed into entirety, pull bar upper end cylindrical 22 is upward through upper cover pilot hole 10, on the pull bar on pull bar 3 top
End external screw thread 21 is connected with spring tension and compression testing machine；Keep the consistency of thickness of internal gasket 8 and inner washer 5,
And keep outer pad 7 and the consistency of thickness of outer washer 4, and outer pad 7 is bigger than the thickness of internal gasket 8,
Enough intensity is had during to ensure and to compress spiral flat spring 9；
Described inner washer 5 is arranged on base workpiece installed surface 16, plays support spiral flat spring 9
Effect；The flat spring outer rim 31 of spiral flat spring 9 is interposed in centre by inner washer 5 and outer washer 4,
And by through outer washer fixing hole 27, flat spring outer rim fixing hole 34 and the spiral shell of inner washer fixing hole 26
Nail is fixed on base workpiece installed surface 16, so that the flat spring outer rim 31 of spiral flat spring 9 and base
2 connect into entirety；During the flat spring inner edge 32 of spiral flat spring 9 is interposed in by internal gasket 8 and outer pad 7
Between, pull bar lower end cylindrical 24 sequentially passes through internal gasket centre bore 28, flat spring centre bore 33 and outer pad
Centre bore 29, pull bar clamping plane 23 connects with the end face of internal gasket 8, and clamp nut 6 is screwed under pull bar
On end external screw thread 25, tighten clamp nut 6, make pull bar 3, internal gasket 8, flat spring inner edge 32, outer pad
Sheet 7 and clamp nut 6 are fixed into entirety, are installed on base 2 by upper cover 1 afterwards and are screwed,
The pull bar 3 being then passed through upper cover pilot hole 10 is connected directly between on spring tension and compression testing machine, so that flat spring
Inner edge 32 is connected with spring tension and compression testing machine；Finally the lower end plane 19 of base 2 is placed on spring tension and compression
On the work top of testing machine, and by screw through base lower end fixing hole 20, make base 2 and spring tension and compression
Testing machine is fixed into an entirety, thus collectively constitutes a kind of linear compressor spiral flat spring axial rigidity
Test device.
The manufacture method of the test device of the linear compressor flat spring axial rigidity invented is as follows:
Upper cover 1, base 2, pull bar 3 and clamp nut 6 are by tensile strength, comprcssive strength and fatigue
The metal material that intensity is bigger is made；Fine turning lathe is used to go out upper cover at the centre finish turning of upper cover 1
Pilot hole 10, it is ensured that the central axis of upper cover pilot hole 10 is in the perpendicularity of upper cover lower end plane 13
Between 1.0～2.0 μm；Fine turning lathe is used to process protrusion upper cover lower end plane 13 in the downside of upper cover 1
On upper cover back-up ring cylindrical 11, and use precision drilling machine to process uniformly arrangement along the outer marginal circumference of upper cover 1
Upper cover fixing hole 12；On the base of base 2, the outer rim of transverse plane 14 uses precision machine tool to coordinate tapping
Processes goes out base threaded upper ends hole 17, and uses fine turning lathe transverse plane 14 along base to process downwards
Go out a step；Use fine turning lathe to process base workpiece near centre position in the inside of base 2 to install
Face 16, and use precision grinder to grind, it is ensured that the flatness of base workpiece installed surface 16 is in 1.0～2.0 μm
Between；Outside using fine turning lathe to coordinate tapping technique to process with flat spring on base workpiece installed surface 16
Screwed hole 18 fixed by the same number of workpiece of edge fixing hole 34, it is ensured that the central shaft of screwed hole 18 fixed by workpiece
The perpendicularity of line and workpiece installed surface 16 is between 1.0～2.0 μm；Use fine turning lathe in base lower end
Base lower end fixing hole 20 is processed, it is ensured that base lower end fixing hole 20 and base lower end plane in plane 19
The perpendicularity of 19 is between 2.0～3.0 μm；Use precision machine tool near lower end position in the middle of pull bar 3
Process pull bar clamping plane 23, pull bar lower end cylindrical 24 and pull bar lower end external screw thread 25 successively；Outer washer
4, inner washer 5, outer pad 7 and internal gasket 8 all use precision machine tool to be processed into annular flake, and use essence
Close grinding machine grinds the flatness of the surfaces externally and internally making four and is between 1.0～2.0 μm, uses accurate brill
Edge of bed outer washer 4 processes identical with flat spring outer rim fixing hole 34 number respectively with the circumference of inner washer 5
Outer washer fixing hole 27 and inner washer fixing hole 26, use precision drilling machine pad 7 outside and internal gasket 8
Center be machined with outer pad centre bore 29 and internal gasket centre bore 28 respectively；Fine turning lathe is used to repair also
Use precision grinder grinds, it is ensured that internal gasket 8 and the consistency of thickness of inner washer 5, at thickness deviation absolute value
Between 1.0～2.0 μm, and ensureing outer pad 7 and the consistency of thickness of outer washer 4, thickness deviation is absolute
Value is between 1.0～2.0 μm；Fine turning lathe finishing is used to ensure that the thickness of outer pad 7 exceedes internal gasket
The thickness of 8 is between 5.0～8.0 μm；Pull bar 3 and base 2 are respectively by pull bar upper external screw thread 21 He
Base lower end fixing hole 20 is connected on spring tension and compression testing machine.
It is an advantage of the current invention that:
1) fixed by the high accuracy of base, and strictly limited the motion rail of pull bar by upper cover fixed guide hole
Mark, makes the Impact direction exact vertical of spiral flat spring and the plane of flat spring the center through flat spring,
Avoid to greatest extent because of spring tension and compression testing machine its own interfaces error and test device install time inclined
The problem of the spiral flat spring stress biasing that difference causes；
2) apparatus of the present invention are by internal outer washer, the careful design of inside and outside pad and making, it is ensured that spiral
Flat spring is during installing and be actually detected, and the deformation making spiral flat spring occur strictly is limited in axial side
Upwards, and the inner edge of flat spring and the stress of outer rim is the most parallel and always perpendicular to flat spring plane.
The test device using the present invention will produce when will eliminate test spiral flat spring axial rigidity to greatest extent
Flat spring stress biasing and Bending Deformation, axial rigidity measured value the most accurately can be obtained, to spiral
The most positive effect is all played in the development optimizing design or even linear compressor of flat spring.
Accompanying drawing explanation
The overall profile of the Fig. 1 linear compressor spiral flat spring axial rigidity test device by being invented；
Fig. 2 is the sectional view of upper cover 1；
Fig. 3 is the sectional view of base 2；
Fig. 4 is the sectional view of pull bar 3；
Fig. 5 is the plane graph of spiral flat spring 9；
Fig. 6 is the 3-D view of outer washer 4；
Fig. 7 is the 3-D view of inner washer 5；
Fig. 8 is the 3-D view of outer pad 7；
Fig. 9 is the 3-D view of internal gasket 8；
Figure 10 is the 3-D view of clamp nut 6.
Wherein；1 is upper cover；2 is base；3 is pull bar；4 is outer washer；5 is inner washer；6 for compressing
Nut；7 is outer pad；8 is internal gasket；9 is spiral flat spring；10 is upper cover pilot hole；11 is upper
Lid back-up ring cylindrical；12 is upper cover fixing hole；13 is upper cover lower end plane；14 is transverse plane on base；15
Inner headed face is positioned for base；16 is base workpiece installed surface；17 is base threaded upper ends hole；18 is workpiece
Fixing screwed hole；19 is base lower end plane；20 is base lower end fixing hole；21 is pull bar threaded upper ends
Hole；22 is pull bar upper end cylindrical；23 is pull bar clamping plane；24 is pull bar lower end cylindrical；25 is pull bar
Lower end screwed hole；26 is inner washer fixing hole；27 is outer washer fixing hole；28 is internal gasket centre bore；
29 is outer pad centre bore；30 is nut clamping plane；31 is flat spring outer rim；32 is flat spring inner edge；
33 is flat spring centre bore；34 is flat spring outer rim fixing hole.
Detailed description of the invention
Below in conjunction with the accompanying drawings and the detailed description of the invention of the present invention is described in further detail by embodiment.
The test device of the linear compressor spiral flat spring axial rigidity invented by upper cover 1, base 2,
Pull bar 3, outer washer 4, inner washer 5, clamp nut 6, outer pad 7, internal gasket 8 form, its feature
Being, upper cover 1 has along center for moving up and down of pull bar 3 is played the upper cover pilot hole of guide effect
10, make on the upper cover lower end plane 13 of upper cover 1 and have the upper cover back-up ring cylindrical with base 2 location fit
11, the outer rim at upper cover lower end plane 13 is machined with the upper cover fixing hole 12 of uniformly arrangement；The end of base 2
On seat, the outer rim of transverse plane 14 is machined with the base threaded upper ends hole 17 being used for fixing upper cover 1, along base
Transverse plane 14 processes downwards a step, is fabricated to the base location matched with upper cover back-up ring cylindrical 11
Inner headed face 15, the inside of base 2 is machined with near centre position for installing inner washer 5 and spiral flat spring
The base workpiece installed surface 16 of 9, is machined with on base workpiece installed surface 16 and is used for fixing inner washer 5, snail
Screwed hole 18 fixed by the workpiece of rotating plate spring 9 and outer washer 4, is machined with on base lower end plane 19
It is used for fixing the base lower end fixing hole 20 of whole axial rigidity detection device；Near position, lower end in the middle of pull bar 3
Putting and process a step, the lower surface of step is pull bar clamping plane 23, under pull bar clamping plane 23
It is respectively pull bar lower end cylindrical 24 and pull bar lower end external screw thread 25；Internal gasket centre bore 28, flat spring center
Hole 33 and outer pad centre bore 29 are sequentially sleeved on pull bar lower end cylindrical 24, and under being arranged on pull bar
End external screw thread 25 on clamp nut 6 squeezing action under be fixed into entirety, pull bar upper end cylindrical 22 to
On through upper cover pilot hole 10, the pull bar upper external screw thread 21 on pull bar 3 top and spring tension and compression testing machine phase
Even；Keep the consistency of thickness of internal gasket 8 and inner washer 5, and keep the thickness of outer pad 7 and outer washer 4
Unanimously, and outer pad 7 is bigger than the thickness of internal gasket 8, has foot during to ensure and to compress spiral flat spring 9
Enough intensity；Inner washer 5 is arranged on base workpiece installed surface 16, plays support spiral flat spring 9
Effect；The flat spring outer rim 31 of spiral flat spring 9 is interposed in centre by inner washer 5 and outer washer 4,
And by through outer washer fixing hole 27, flat spring outer rim fixing hole 34 and the spiral shell of inner washer fixing hole 26
Nail is fixed on base workpiece installed surface 16, so that the flat spring outer rim 31 of spiral flat spring 9 and base
2 connect into entirety；During the flat spring inner edge 32 of spiral flat spring 9 is interposed in by internal gasket 8 and outer pad 7
Between, pull bar lower end cylindrical 24 sequentially passes through internal gasket centre bore 28, flat spring centre bore 33 and outer pad
Centre bore 29, pull bar clamping plane 23 connects with the end face of internal gasket 8, and clamp nut 6 is screwed under pull bar
On end external screw thread 25, tighten clamp nut 6, make pull bar 3, internal gasket 8, flat spring inner edge 32, outer pad
Sheet 7 and clamp nut 6 are fixed into entirety, are installed on base 2 by upper cover 1 afterwards and are screwed,
The pull bar 3 being then passed through upper cover pilot hole 10 is connected directly between on spring tension and compression testing machine, so that flat spring
Inner edge 32 is connected with spring tension and compression testing machine；Finally the lower end plane 19 of base 2 is placed on spring tension and compression
On the work top of testing machine, and by screw through base lower end fixing hole 20, make base 2 and spring tension and compression
Testing machine is fixed into an entirety, thus collectively constitutes a kind of linear compressor spiral flat spring axial rigidity
Test device.
The manufacture method of the test device of the linear compressor flat spring axial rigidity invented is as follows:
Upper cover 1, base 2, pull bar 3 and clamp nut 6 are by tensile strength, comprcssive strength and tired
The metal material that labor intensity is bigger is made；Use fine turning lathe on the centre finish turning of upper cover 1 goes out
Lid pilot hole 10, it is ensured that the central axis of upper cover pilot hole 10 with the perpendicularity of upper cover lower end plane 13 is
1.5μm；Fine turning lathe is used to process protrude on upper cover lower end plane 13 upper in the downside of upper cover 1
Lid back-up ring cylindrical 11, and use precision drilling machine to process the upper cover of uniformly arrangement admittedly along the outer marginal circumference of upper cover 1
Determine hole 12；On the base of base 2, the outer rim of transverse plane 14 uses precision machine tool to coordinate tapping processes
Go out base threaded upper ends hole 17, and use fine turning lathe transverse plane 14 along base to process downwards a platform
Rank；Fine turning lathe is used to process base workpiece installed surface 16 near centre position in the inside of base 2, and
Use precision grinder grinds, it is ensured that the flatness of base workpiece installed surface 16 is 1.5 μm；Use accurate car
Bed coordinates tapping technique to process on base workpiece installed surface 16 and flat spring outer rim fixing hole 34 number phase
Screwed hole 18 fixed by same workpiece, it is ensured that central axis and the workpiece installed surface 16 of screwed hole 18 fixed by workpiece
Perpendicularity be 1.5 μm；Use fine turning lathe to process base lower end on base lower end plane 19 to fix
Hole 20, it is ensured that base lower end fixing hole 20 is 2.5 μm with the perpendicularity of base lower end plane 19；Use
Precision machine tool processes outside pull bar clamping plane 23, pull bar lower end successively near lower end position in the middle of pull bar 3
Circle 24 and pull bar lower end external screw thread 25；Outer washer 4, inner washer 5, outer pad 7 and internal gasket 8 all use
Precision machine tool is processed into annular flake, and it is equal to use precision grinder to grind the flatness of the surfaces externally and internally making four
It is 1.5 μm, outside using precision drilling machine to process with flat spring respectively along the circumference of outer washer 4 and inner washer 5
Edge fixing hole 34 the same number of outer washer fixing hole 27 and inner washer fixing hole 26, use precision drilling machine to exist
The center of outer pad 7 and internal gasket 8 is machined with outer pad centre bore 29 and internal gasket centre bore 28 respectively；
Fine turning lathe is used to repair and use precision grinder to grind, it is ensured that internal gasket 8 and the consistency of thickness of inner washer 5,
Thickness deviation absolute value is 1.5 μm, and ensures the consistency of thickness of outer pad 7 and outer washer 4, thickness deviation
Absolute value is 1.5 μm；Fine turning lathe finishing is used to ensure that the thickness of outer pad 7 exceedes the thickness of internal gasket 8
It is 6.0 μm；Pull bar 3 and base 2 are respectively by pull bar upper external screw thread 21 and base lower end fixing hole 20
It is connected on spring tension and compression testing machine.
Claims (2)
1. the test device of a linear compressor spiral flat spring axial rigidity, it includes upper cover (1), base (2), pull bar (3), outer washer (4), inner washer (5), clamp nut (6), outer pad (7), internal gasket (8), it is characterised in that:
Described upper cover (1) has for pull bar (3) moves up and down the upper cover pilot hole (10) playing guide effect along center, making upper cover back-up ring cylindrical (11) having with base (2) location fit on the upper cover lower end plane (13) of upper cover (1), the outer rim at upper cover lower end plane (13) is machined with the upper cover fixing hole (12) of uniformly arrangement；
On the base of described base (2), the outer rim of transverse plane (14) is machined with the base threaded upper ends hole (17) being used for fixing upper cover (1), along base, transverse plane (14) processes downwards a step, it is fabricated to base location inner headed face (15) matched with upper cover back-up ring cylindrical (11), the inside of base (2) is machined with base workpiece installed surface (16) for installing inner washer (5) and spiral flat spring (9) near centre position, base workpiece installed surface (16) is machined with and is used for fixing inner washer (5), screwed hole (18) fixed by the workpiece of spiral flat spring (9) and outer washer (4), base lower end plane (19) is machined with base lower end fixing hole (20) being used for fixing whole axial rigidity detection device；
A step is processed near lower end position in the middle of described pull bar (3), the lower surface of step is pull bar clamping plane (23), is respectively pull bar lower end cylindrical (24) and pull bar lower end external screw thread (25) under pull bar clamping plane (23)；Internal gasket centre bore (28), flat spring centre bore (33) and outer pad centre bore (29) are sequentially sleeved on pull bar lower end cylindrical (24), and it is fixed into entirety under being arranged on the squeezing action of the clamp nut (6) on pull bar lower end external screw thread (25), pull bar upper end cylindrical (22) is upward through upper cover pilot hole (10), and the pull bar upper external screw thread (21) on pull bar (3) top is connected with spring tension and compression testing machine；Keep the consistency of thickness of internal gasket (8) and inner washer (5), and keep the consistency of thickness of outer pad (7) and outer washer (4), and outer pad (7) is bigger than the thickness of internal gasket (8), during to ensure and to compress spiral flat spring (9), there is enough intensity；
Described inner washer (5) is arranged on base workpiece installed surface (16), plays the effect supporting spiral flat spring (9)；The flat spring outer rim (31) of spiral flat spring (9) is interposed in centre by inner washer (5) and outer washer (4), and by being fixed on base workpiece installed surface (16) through the screw of outer washer fixing hole (27), flat spring outer rim fixing hole (34) and inner washer fixing hole (26), so that the flat spring outer rim (31) of spiral flat spring (9) and base (2) connect into entirety；nullThe flat spring inner edge (32) of spiral flat spring (9) is interposed in centre by internal gasket (8) and outer pad (7)，Pull bar lower end cylindrical (24) sequentially passes through internal gasket centre bore (28)、Flat spring centre bore (33) and outer pad centre bore (29)，Pull bar clamping plane (23) connects with the end face of internal gasket (8)，Clamp nut (6) is screwed on pull bar lower end external screw thread (25)，Tighten clamp nut (6)，Make pull bar (3)、Internal gasket (8)、Flat spring inner edge (32)、Outer pad (7) and clamp nut (6) are fixed into entirety，Upper cover (1) is installed to base (2) afterwards above and be screwed，The pull bar (3) being then passed through upper cover pilot hole (10) is connected directly between on spring tension and compression testing machine，So that flat spring inner edge (32) are connected with spring tension and compression testing machine；Finally the lower end plane (19) of base (2) is placed on the work top of spring tension and compression testing machine, and by screw through base lower end fixing hole (20), make base (2) and spring tension and compression testing machine be fixed into an entirety, thus collectively constitute the test device of a kind of linear compressor spiral flat spring axial rigidity.
2. the method for the test device manufacturing linear compressor flat spring axial rigidity as claimed in claim 1, it is characterized in that, upper cover (1), base (2), pull bar (3) and clamp nut (6) are made by the metal material that tensile strength, comprcssive strength and fatigue strength are bigger；Fine turning lathe is used to go out upper cover pilot hole (10) at the centre finish turning of upper cover (1), it is ensured that the central axis of upper cover pilot hole (10) and the perpendicularity of upper cover lower end plane (13) are between 1.0～2.0 μm；Use fine turning lathe to process upper cover back-up ring cylindrical (11) protruded on upper cover lower end plane (13) in the downside of upper cover (1), and use precision drilling machine to process, along the outer marginal circumference of upper cover (1), the upper cover fixing hole (12) uniformly arranged；On the base of base (2), the outer rim of transverse plane (14) uses precision machine tool to coordinate tapping processes to go out base threaded upper ends hole (17), and uses fine turning lathe transverse plane (14) along base to process downwards a step；Use fine turning lathe to process base workpiece installed surface (16) near centre position in the inside of base (2), and use precision grinder to grind, it is ensured that the flatness of base workpiece installed surface (16) is between 1.0～2.0 μm；Use fine turning lathe to coordinate tapping technique to process on base workpiece installed surface (16) and fix screwed hole (18) with flat spring outer rim fixing hole (34) the same number of workpiece, it is ensured that the perpendicularity of the central axis and workpiece installed surface (16) that screwed hole (18) fixed by workpiece is between 1.0～2.0 μm；Fine turning lathe is used to process base lower end fixing hole 20 on base lower end plane (19), it is ensured that the perpendicularity of base lower end fixing hole (20) and base lower end plane (19) is between 2.0～3.0 μm；Precision machine tool is used to process pull bar clamping plane (23), pull bar lower end cylindrical (24) and pull bar lower end external screw thread (25) successively near lower end position in the middle of pull bar (3)；Outer washer (4), inner washer (5), outer pad (7) and internal gasket (8) all use precision machine tool to be processed into annular flake, and the flatness using precision grinder to grind the surfaces externally and internally making four is between 1.0～2.0 μm, precision drilling machine is used to process respectively and flat spring outer rim fixing hole (34) the same number of outer washer fixing hole (27) and inner washer fixing hole (26) along the circumference of outer washer (4) and inner washer (5), the center using precision drilling machine pad outside (7) and internal gasket (8) is machined with outer pad centre bore (29) and internal gasket centre bore (28) respectively；Fine turning lathe is used to repair and use precision grinder to grind, ensure the consistency of thickness of internal gasket (8) and inner washer (5), thickness deviation absolute value is between 1.0～2.0 μm, and ensureing outer pad (7) and the consistency of thickness of outer washer (4), thickness deviation absolute value is between 1.0～2.0 μm；Fine turning lathe finishing is used to ensure that the thickness of outer pad (7) exceedes the thickness of internal gasket (8) between 5.0～8.0 μm；Pull bar (3) and base (2) are connected on spring tension and compression testing machine by pull bar upper external screw thread (21) and base lower end fixing hole (20) respectively.
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| CN104895776B (en) * | 2015-05-04 | 2017-01-04 | 浙江大学 | A kind of indirect measurement Linearkompressor spring rate and the method for mover quality |
| CN106051036B (en) * | 2016-07-21 | 2018-10-12 | 上海理工大学 | Equiangular spiral flat spring |
| CN110043442A (en) * | 2019-04-19 | 2019-07-23 | 上海理工大学 | The error-correction structure of sterlin refrigerator linear compressor piston biasing |
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| CN87215484U (en) * | 1987-11-10 | 1988-09-14 | 杭州照相机械研究所 | Tester for camera spring stiffness |
| DE102004062301A1 (en) * | 2004-12-23 | 2006-07-13 | BSH Bosch und Siemens Hausgeräte GmbH | Linear compressor and drive unit for it |
| CN101556229B (en) * | 2008-08-15 | 2011-01-12 | 上海舜宇恒平科学仪器有限公司 | Spring plate rigidity precision testing instrument |
| CN102175534B (en) * | 2011-01-21 | 2013-07-10 | 上海理工大学 | Test device for stiffness of flexible spring |
| CN103728110A (en) * | 2014-01-13 | 2014-04-16 | 核工业理化工程研究院 | Vertically-lifting embedded spring rigidity measuring device |
| CN204228392U (en) * | 2014-10-16 | 2015-03-25 | 中国科学院上海技术物理研究所 | The proving installation of linear compressor spiral laminated spring axial rigidity |
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Effective date of registration: 20230925 Address after: 1155 Liuxiang Road, Nanxiang Town, Jiading District, Shanghai, 201802 Patentee after: Shanghai Platinum-indigo Refrigeration Technology Co.,Ltd. Address before: 200083 No. 500, Yutian Road, Shanghai, Hongkou District Patentee before: SHANGHAI INSTITUTE OF TECHNICAL PHYSICS, CHINESE ACADEMY OF SCIENCE |