CN106626503B - A kind of built-in force snesor that direct measuring force may be implemented - Google Patents
A kind of built-in force snesor that direct measuring force may be implemented Download PDFInfo
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- CN106626503B CN106626503B CN201611227526.9A CN201611227526A CN106626503B CN 106626503 B CN106626503 B CN 106626503B CN 201611227526 A CN201611227526 A CN 201611227526A CN 106626503 B CN106626503 B CN 106626503B
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- Prior art keywords
- force
- pressing sleeve
- cylindrical bore
- dynamometry
- hole
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/026—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same fluid driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0052—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for fluid driven presses
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
- G01L1/2218—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being of the column type, e.g. cylindric, adapted for measuring a force along a single direction
- G01L1/2225—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being of the column type, e.g. cylindric, adapted for measuring a force along a single direction the direction being perpendicular to the central axis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/26—Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
Abstract
The invention discloses a kind of built-in force snesors that direct measuring force may be implemented, including the first pressing sleeve, pressure sensor assembly, the second pressing sleeve, pressure head and fixed device, the first cylindrical bore is equipped in first pressing sleeve one end, pressure sensor assembly is mounted on inside the first cylindrical bore, including sequentially connected force side, transmission rod and dynamometry end, the free end at dynamometry end is equipped with the second cylindrical bore, its inside bottom surface is equipped with foil gauge, and the free end of force side is equipped with third cylindrical bore；The fixing end face contact of second pressing sleeve one end and dynamometry end, other end outside are equipped with the shoulder being fixedly connected by screw with pressing sleeve, pressure sensor assembly are fixed on inside the first pressing sleeve；Pressure head is fixed on inside third cylindrical bore by fixed device.The core of sensor can be built in inside digitally-controlled press machine by the present invention, and directly detection reduces the influence of external environment by dynamometry, realize the function that built-in installation, precision is high, facilitates installation.
Description
Technical field
The present invention relates to a kind of force snesors, and in particular to one kind, which is installed on inside digitally-controlled press machine, may be implemented directly to survey
The built-in force snesor measured one's own ability.
Background technique
Force snesor is the device for the magnitude of power to be converted to corresponding electric signal, is mainly made of three parts:
1. elastomer (common material has aluminium alloy, steel alloy and stainless steel)；2. (most commonly seen is resistance-strain to conversion element
Piece)；3. circuit part (generally has enameled wire, foil gauge is connected composition electric bridge, for measuring resistance change).According to function
With the difference of principle, the main 5 kinds of forms of force snesor: (1) by dynamometry produce elastomer (such as spring, beam, bellows, diaphragm)
Raw corresponding displacement, the signal of power is obtained by the measurement of displacement；(2) elastic component and foil gauge collectively form sensor, answer
Become piece to be securely pasted onto component surface, when elastic component stress generates linear deformation, answers foil gauge resistance change (
When change, foil gauge geometry and resistivity change, and lead to resistance change), the signal of power is obtained by resistance measurement.
Foil gauge can be made of metal foil, can also be made of semiconductor material；(3) piezoelectric effect dynamometry is utilized, piezo-electric crystal handle is passed through
Power is converted directly into the potential difference being placed on crystal double-sided electrode；(4) power causes mechanical resonance system intrinsic frequency to change, and passes through
The relevant information of frequency measurement acquisition power；(5) balance for passing through electromagnetic force and testing force is obtained by the powered-down magnetic parameter of balance phase
The information of power.
Application No. is 201010129745.X to disclose a kind of high-temperature high-frequency response pressure sensor for flushing encapsulation, including pressure
Power chip, in conjunction with glass, glass and metal base bond pressure chip, and high temperature pinboard and high temperature built-up circuit compensate
Plate is separately fixed in metal base, and pressure chip is connect with high temperature switching circuit board by spun gold lead, high temperature pinboard with
High temperature built-up circuit compensating plate is connected by high temperature wire, is connected on four core high temperature wires and high temperature built-up circuit compensating plate, gold
Belong to pedestal to connect with metal shell, metal shell is connect with solidus cap, and four core high temperature wires are from the hole of metal shell and solidus cap
It is pierced by, the pressure chip impression external world is connected to oneself pressure, pressure signal is changed into voltage signal, voltage signal passes sequentially through gold
Silk lead, high temperature pinboard and high temperature wire are transmitted to high temperature built-up circuit compensating plate, are led after overcompensation by four core high temperature
The output of bundle of lines voltage signal.Have the advantages that high temperature resistant, high frequency sound.
Application No. is 201210501256.1 to disclose a kind of pressure sensor assembly, including the first component；Second component,
It includes being connected to the first end of the first component and being connected to the second end in the source of fluid；Substrate, be located at the first component with
In the first cavity formed between second component, wherein second side from the first side of substrate to the first component and substrate
Two side faces are to the first side of second component；Pressure-sensing chip, installation to substrate and the first energy absorbing member,
Between first side of substrate and second side of the first component, wherein the first energy absorbing member separates substrate and the first component.
Above-mentioned force snesor is used to hydraulic pressure, the i.e. measurement of pressure, and is external design, belongs to indirectly measurement,
And digitally-controlled press machine is a kind of precision intelligence press-loading device, wherein force snesor is its critical component, the structure shape of force snesor
Formula and installation form directly influence dynamometry precision, reliability and the ease of use of digitally-controlled press machine, existing structure
Due to external installation, indirectly measurement power in force snesor use process, the influence of external environment is easily received and to generate precision not high
The problem of.
Summary of the invention
The present invention is to overcome digitally-controlled press machine uses in the prior art force snesor due to vulnerable to external environment shadow
It rings and leads to the problem of that precision is not high, a kind of built-in force snesor that direct measuring force may be implemented is provided, it can be by sensor
Core be built in inside digitally-controlled press machine, and directly measure load force, the influence cut down the number of intermediate links with external environment,
Realize that built-in installation, direct dynamometry, precision are high, facilitate installation, quick detachable function.
The present invention provides a kind of built-in force snesor that direct measuring force may be implemented, including the first pressing sleeve, pressure pass
Sensor component, the second pressing sleeve, pressure head and fixed device, the first pressing sleeve is mounted on digitally-controlled press machine, in the freedom of the first pressing sleeve
End is equipped with the first cylindrical bore, and pressure sensor assembly is mounted on inside the first cylindrical bore；Pressure sensor assembly packet
Include force side, the transmission rod that one end is fixedly connected with force side and the dynamometry end being fixedly connected with the transmission rod other end, dynamometry end
Free end face and the first cylindrical bore inside bottom surface be in close contact, dynamometry end free end be equipped with the second cylinder in
Hole, is equipped with foil gauge in the second cylindrical bore inside bottom surface, and the free end of force side is equipped with third cylindrical bore, dynamometry
The outer diameter at end is greater than the outer diameter of transmission rod and the outer diameter of force side, and pressure sensor assembly generates change under the action of external pressure
Corresponding change occurs for the resistance value of shape, foil gauge, is passed through the variation of resistance value by the electric bridge that conducting wire connects foil gauge composition
External signal amplification is changed into voltage signal, to realize the measurement of power；Second pressing sleeve one end is fixed with dynamometry end and transmission rod
The end face of connection is in close contact, and pressure sensor assembly is fixed on inside the first pressing sleeve, makes it in radial and axial gapless,
Gap displacement is not generated, the pressing force of the second pressing sleeve only acts upon on the body wall at dynamometry end at this time, does not generate power to foil gauge
Effect will not cause to generate additional power because of installation, be equipped with shoulder on the outside of the other end of the second pressing sleeve, spiral shell is equipped on shoulder
Hole, screw pass through screw hole and are fixedly connected with the second pressing sleeve with the first pressing sleeve；Pressure head includes the first end and second end being fixedly connected,
First end is mounted on inside third cylindrical bore, and the length of first end is identical as the depth of third cylindrical bore；Fixed dress
Set the inside for pressure head to be fixed on to third cylindrical bore.
A kind of built-in force snesor that direct measuring force may be implemented of the present invention, it is preferred that, it is fixed
Device includes the ring flange being connect by screw with force side；The second end of pressure head passes through the through-hole in the middle part of ring flange.Pass through method
The second end of pressure head can be fixed in the third cylindrical hole of force side by blue disk, contact pressure head and sensor directly,
Directly measure load force.
A kind of built-in force snesor that direct measuring force may be implemented of the present invention, it is preferred that, it is fixed
Device includes jackscrew, and first through hole is equipped on the side wall of the first pressing sleeve, and the second through-hole is equipped on the side wall of the second pressing sleeve,
The side wall of force side is equipped with third through-hole, and jackscrew sequentially passes through first through hole, the second through-hole and third through-hole and pressure head is fixed
Connection.The second end of pressure head can be fixed in the third cylindrical hole of force side by jackscrew, make pressure head and sensor
It directly contacts, directly measurement load force.
A kind of built-in force snesor that direct measuring force may be implemented of the present invention, it is preferred that, power transmission
Bar is solid cylinder, and force side and dynamometry end are hollow cylinder, force side, transmission rod and dynamometry end axis having the same
The heart.Circular shape concentric design can guarantee the uniformity of pressure transmission, improve the measurement accuracy of force snesor.
A kind of built-in force snesor that direct measuring force may be implemented of the present invention, it is preferred that, stress
The diameter Relationship at end, transmission rod and dynamometry end is the force side dynamometry end outer diameter > outer diameter > transmission rod outer diameter.
A kind of built-in force snesor that direct measuring force may be implemented of the present invention, it is preferred that, dynamometry
The internal diameter of the outer diameter at end and the first cylindrical bore is clearance fit；The internal diameter of the outer diameter of second pressing sleeve and the first cylindrical bore
For clearance fit；The internal diameter of second pressing sleeve and the outer diameter of force side are clearance fit, to prevent the diameter of pressure sensor assembly
To movement.
A kind of built-in force snesor that direct measuring force may be implemented of the present invention, it is preferred that, it is surveying
The free end face at power end is equipped with an end cap, for being sealed to the second cylindrical bore.End cap can be realized the second cylinder
The sealing of shape inner hole, the pollutants such as pre- dust protection enter dynamometry area, the foil gauge being located therein and phase can be effectively protected
The electronic circuit answered guarantees the measuring accuracy of pressure sensor assembly from pollution, and that improves built-in force snesor uses the longevity
Life.
A kind of built-in force snesor that direct measuring force may be implemented of the present invention, it is preferred that,
On two cylindrical bore bottom surfaces, the anchor ring between transmission rod outer diameter and the second cylindrical bore internal diameter is equipped with multiple uniform points
The fourth hole of cloth, foil gauge are arranged between fourth hole.The design in hole can increase pressure sensor assembly in pressure
Deflection under effect, and then improve sensitivity of the pressure sensor assembly to pressure.
In use, pressure acts on the second end of pressure head and is transferred to power transmission with the first end for crossing pressure head the present invention
Bar, then dynamometry end is transmitted to by transmission rod, dynamometry end generates deformation under the effect of the pressure, and the resistance value of foil gauge is caused to produce
Changing is connected the electric bridge of foil gauge composition by conducting wire, resistance change value is sent to signal amplifier, force value is converted
The measurement of power is realized for voltage signal.When pressure head needs replacing, the screw for taking out jackscrew or unclamping on ring flange removes flange
Disk can be replaced easily；When needing replacing pressure sensor assembly, the screw on the second pressing sleeve need to be only unscrewed, i.e.,
It can be taken off pressure sensor assembly to be replaced.
The present invention is since the pressure sensor assembly for being used to measure pressure to be built in inside the first pressing sleeve, then passes through second
Pressure sensor assembly is fixed in pressing sleeve, can effectively prevent influence of the pressure sensor assembly by external environment,
And the stabilization of pressure sensor assembly is kept in measurement process, it avoids generating structural instability phenomenon, pressure head passes through jackscrew or method
Blue disk and screw are directly fixedly connected in built-in force snesor third cylindrical bore, are realized direct dynamometry, are effectively mentioned
The high precision of built-in force snesor, while the first pressing sleeve outer wall integrally shields to pressure sensor assembly, and more
It changes conveniently.
Detailed description of the invention
Fig. 1 is a kind of cross-sectional view of built-in force snesor in embodiment 1；
Fig. 2 is the cross-sectional view of the first pressing sleeve in embodiment 1；
Fig. 3 is the perspective view of pressure sensor assembly in embodiment 1；
Fig. 4 is the cross-sectional view of pressure sensor assembly in embodiment 1；
Fig. 5 is the top view of pressure sensor assembly in embodiment 1；
Fig. 6 is the cross-sectional view of the second pressing sleeve in embodiment 1；
Fig. 7 is the cross-sectional view of pressure head in embodiment 1；
Fig. 8 is a kind of cross-sectional view of built-in force snesor in embodiment 2；
Fig. 9 is the cross-sectional view of the first pressing sleeve in embodiment 2；
Figure 10 is the cross-sectional view of pressure sensor assembly in embodiment 2；
Figure 11 is the cross-sectional view of the second pressing sleeve in embodiment 2；
Figure 12 is a kind of cross-sectional view of built-in force snesor in embodiment 3；
Figure 13 is the perspective view of pressure sensor assembly in embodiment 3；
Figure 14 is the cross-sectional view of pressure sensor assembly in embodiment 3；
Figure 15 is the top view of pressure sensor assembly in embodiment 3.
Appended drawing reference:
1, the first pressing sleeve；11, the first cylindrical bore；12, first through hole；2, pressure sensor assembly；21, force side；
22, transmission rod；23, dynamometry end；24, the second cylindrical bore；25, foil gauge；26, third cylindrical bore；27, third is logical
Hole；28, fourth hole；3, the second pressing sleeve；31, shoulder；32, screw hole；33, the second through-hole；4, pressure head；41, first end；42,
Two ends；5, ring flange；6, screw；7, jackscrew；8, end cap.
Specific embodiment
Embodiment 1
As shown in Figure 1, the present invention provides a kind of built-in force snesor that direct measuring force may be implemented, including the first pressure
Set 1, pressure sensor assembly 2, the second pressing sleeve 3, pressure head 4, ring flange 5 and end cap 8, the first pressing sleeve 1 are mounted on digitally-controlled press machine
On, as shown in Fig. 2, being equipped with the first cylindrical bore 11 in the free end of the first pressing sleeve 1, pressure sensor assembly 2 is mounted on the
Inside one cylindrical bore 11；As seen in figures 3-5, pressure sensor assembly 2 includes that force side 21, one end and force side 21 are solid
Surely the transmission rod 22 connected and the dynamometry end 23 being fixedly connected with 22 other end of transmission rod, the free end face at dynamometry end 23 and first
11 inside bottom surface of cylindrical bore is in close contact, and the second cylindrical bore 24 is equipped in the free end at dynamometry end 23, in the second circle
24 inside bottom surface of bore is equipped with foil gauge 25, and an end cap 8 is equipped on the free end face at dynamometry end 23, for second
Cylindrical bore 24 is sealed, and prevents dirt of the pollutants such as dust to foil gauge 25 and conducting wire in the second cylindrical bore 24
Dye and damage, the free end of force side 21 are equipped with third cylindrical bore 26, and it is cylindrical that the free end of force side 21 is equipped with third
Inner hole 26, transmission rod 22 are solid cylinder, and force side 21 and dynamometry end 23 are hollow cylinder, force side 21, transmission rod
22 and the axle center having the same of dynamometry end 23, the diameter Relationship of force side 21, transmission rod 22 and dynamometry end 23 is outside dynamometry end 23
21 outer diameter > transmission rod of the force side diameter >, 22 outer diameter；As shown in fig. 6,3 one end of the second pressing sleeve and dynamometry end 23 and transmission rod 22 are solid
Surely the end face that connects is in close contact, for pressure sensor assembly 2 to be fixed on inside pressing sleeve 1, make its radial-axial not
Displacement is generated, the wall thickness of the second pressing sleeve 3 is not more than the wall thickness at dynamometry end 23, and the pressing force of the second pressing sleeve 3 only acts upon survey at this time
On the body wall at power end 23, does not generate the effect of power to foil gauge 25, shoulder 31 is equipped on the outside of the other end of the second pressing sleeve 3, in shoulder
Portion 31 is equipped with screw hole 32, and screw 6 passes through screw hole 32 and is fixedly connected with the second pressing sleeve 3 with the first pressing sleeve 1；As shown in fig. 7, pressure head
4 include the first end 41 and second end 42 being fixedly connected, and first end 41 is mounted on inside third cylindrical bore 26, first end 41
Length it is identical as the depth of third cylindrical bore 26, second end 2 passes through the through-hole at the middle part of ring flange 5；Ring flange 5 passes through spiral shell
Nail 6 is connect with force side 21, for pressure head 4 to be fixed in force snesor 2 by the movement of limitation pressure head 4.
In use, pressure acts on the second end 42 of pressure head 4 and passes with the first end 41 for crossing pressure head the present embodiment
It is handed to transmission rod 22, then dynamometry end 23 is transmitted to by transmission rod 22, dynamometry end 23 generates deformation under the effect of the pressure, causes
The resistance value of foil gauge 25 generates variation, exports resistance change by conducting wire, is converted to electric signal through signal amplifier.When
When pressure sensor assembly 2 needs replacing, the screw 6 on the second pressing sleeve 3 is unclamped, that is, can be taken off the progress of pressure sensor assembly 2
Replacement.
Built-in force snesor described in the present embodiment is suitable for the case where rated pressure is greater than 30000N, sensitivity energy
Enough reach the 1 ‰ of rated pressure.
Embodiment 2
As shown in figure 8, the present invention provides a kind of built-in force snesor that direct measuring force may be implemented, including the first pressure
Set 1, pressure sensor assembly 2, the second pressing sleeve 3, pressure head 4, jackscrew 7 and end cap 8, pressing sleeve 1 are mounted on digitally-controlled press machine, are such as schemed
Shown in 9, it is equipped with the first cylindrical bore 11 in the free end of the first pressing sleeve 1, pressure sensor assembly 2 is mounted on the first cylinder
Inside inner hole 11；As shown in Fig. 3,5,10, pressure sensor assembly 2 is fixedly connected including force side 21, one end with force side 21
Transmission rod 22 and the dynamometry end 23 that is fixedly connected with 22 other end of transmission rod, the free end face at dynamometry end 23 and first cylindrical
11 inside bottom surface of inner hole is in close contact, and the second cylindrical bore 24 is equipped in the free end at dynamometry end 23, in the second cylinder
24 inside bottom surface of hole is equipped with foil gauge 25, and an end cap 8 is equipped on the free end face at dynamometry end 23, for the second cylinder
Inner hole 24 is sealed, and prevents pollution and damage of the pollutants such as dust to foil gauge 25 and conducting wire in the second cylindrical bore 24
Wound, the free end of force side 21 are equipped with third cylindrical bore 26, and the free end of force side 21 is equipped with third cylindrical bore 26,
Transmission rod 22 is solid cylinder, and force side 21 and dynamometry end 23 are hollow cylinder, force side 21, transmission rod 22 and dynamometry
23 axle center having the same are held, the diameter Relationship of force side 21, transmission rod 22 and dynamometry end 23 is 23 outer diameter > stress of dynamometry end
Hold 21 outer diameter > transmission rod, 22 outer diameter；As shown in figure 11,3 one end of the second pressing sleeve is fixedly connected with dynamometry end 23 and transmission rod 22
End face is in close contact, and for pressure sensor assembly 2 to be fixed on inside the first pressing sleeve 1, generates it not in diameter and axially
Displacement, the pressing force of the second pressing sleeve 3 only acts upon on the body wall at dynamometry end 23 at this time, does not generate the effect of power to foil gauge 25,
It is equipped with shoulder 31 on the outside of the other end of second pressing sleeve 3, screw hole 32 is equipped on shoulder 31, screw 6 passes through screw hole 32 for the second pressure
Set 3 is fixedly connected with pressing sleeve 1；As shown in fig. 7, pressure head 4 includes the first end 41 and second end 42 being fixedly connected, first end 41 is pacified
Inside third cylindrical bore 26, the length of first end 41 is identical as the depth of third cylindrical bore 26, in the first pressure
The side wall of set 1 is equipped with first through hole 12, and the second through-hole 37, the side wall in force side 21 are equipped on the side wall of the second pressing sleeve 3
It is equipped with third through-hole 23, jackscrew 7 sequentially passes through first through hole 12, the second through-hole 37 and third through-hole 23 and the fixed company of pressure head 4
It connects.The second end 42 of pressure head 4 can be fixed in the third cylindrical hole 26 of force side 21, can be prevented by jackscrew 7
Pressure head 4 is in radial and axial movement.
In use, pressure acts on the second end 42 of pressure head 4 and passes with the first end 41 for crossing pressure head the present embodiment
It is handed to transmission rod 22, then dynamometry end 23 is transmitted to by transmission rod 22, dynamometry end 23 generates deformation under the effect of the pressure, causes
The resistance value of foil gauge 25 generates variation, draws resistance change value by conducting wire, is converted force value by signal amplifier
For electric signal, that is, voltage value, the measurement of power is realized.When pressure sensor assembly 2 needs replacing, on the second pressing sleeve 3 spiral shell is unclamped
Bolt 6 can be taken off pressure sensor assembly 2 and be replaced.
Built-in force snesor described in the present embodiment is suitable for the case where rated pressure is less than 30000N, clever precision energy
Enough reach the 1 ‰ of rated pressure.
Embodiment 3
As shown in figure 12, the present invention provides a kind of built-in force snesor that direct measuring force may be implemented, including first
Pressing sleeve 1, pressure sensor assembly 2, the second pressing sleeve 3, pressure head 4, ring flange 5, jackscrew 7 and end cap 8, the first pressing sleeve 1 are mounted on number
On governor pressure machine, as shown in figure 9, being equipped with the first cylindrical bore 11, pressure sensor assembly 2 in the free end of the first pressing sleeve 1
It is mounted on inside the first cylindrical bore 11；As shown in Figure 13~15, pressure sensor assembly 2 include force side 21, one end with
The transmission rod 22 and the dynamometry end 23 being fixedly connected with 22 other end of transmission rod that force side 21 is fixedly connected, the freedom at dynamometry end 23
End face and 11 inside bottom surface of the first cylindrical bore are in close contact, and are equipped with the second cylindrical bore in the free end at dynamometry end 23
24, on 24 bottom surface of the second cylindrical bore, on the anchor ring between 24 internal diameter of 22 outer diameter of transmission rod and the second cylindrical bore
Eight fourth holes 28 are uniformly provided with, foil gauge 25 is arranged between fourth hole 28, sets on the free end face at dynamometry end 23
There is an end cap 8, for being sealed to the second cylindrical bore 24, prevents the pollutants such as dust in the second cylindrical bore 24
Foil gauge 25 and conducting wire pollution and damage, the free end of force side 21 is equipped with third cylindrical bore 26, force side 21
Free end is equipped with third cylindrical bore 26, and transmission rod 22 is solid cylinder, and force side 21 and dynamometry end 23 are open circles
Cylinder, force side 21, transmission rod 22 and dynamometry end 23 axle center having the same, force side 21, transmission rod 22 and dynamometry end 23
Diameter Relationship is 23 force side outer diameter > of dynamometry end, 21 outer diameter > transmission rod, 22 outer diameter；As shown in figure 11,3 one end of the second pressing sleeve with
The end face that dynamometry end 23 is fixedly connected with transmission rod 22 is in close contact, for pressure sensor assembly 2 to be fixed on the first pressing sleeve 1
Inside, makes it not generate displacement both horizontally and vertically, and the wall thickness of the second pressing sleeve 3 is not more than the wall at dynamometry end 23
Thickness, the pressing force of the second pressing sleeve 3 only acts upon on the body wall at dynamometry end 23 at this time, does not generate the effect of power to foil gauge 25, the
It is equipped with shoulder 31 on the outside of the other end of two pressing sleeves 3, screw hole 32 is equipped on shoulder 31, screw 6 passes through screw hole 32 for the second pressing sleeve 3
It is fixedly connected with the first pressing sleeve 1；As shown in fig. 7, pressure head 4 includes the first end 41 and second end 42 being fixedly connected, first end 41
It is mounted on inside third cylindrical bore 26, the length of first end 41 is identical as the depth of third cylindrical bore 26, second end 2
Through-hole across 5 middle part of ring flange；Ring flange 5 is connect by screw 6 with force side 21, for the movement by limitation pressure head 4
Pressure sensor assembly 2 is fixed on inside the first pressing sleeve 1；First through hole 12 is equipped on the side wall of the first pressing sleeve 1, second
The side wall of pressing sleeve 3 is equipped with the second through-hole 37, and third through-hole 23 is equipped on the side wall of force side 21, and jackscrew 7 sequentially passes through the
One through-hole 12, the second through-hole 37 and third through-hole 23 are fixedly connected with pressure head 4, can be by pressure head 4 by ring flange 5 and jackscrew 7
Second end 42 be fixed in the third cylindrical hole 26 of force side 21, pressure head 4 can be prevented in radial and axial movement.
In use, pressure acts on the second end 42 of pressure head 4 and passes with the first end 41 for crossing pressure head the present embodiment
It is handed to transmission rod 22, then dynamometry end 23 is transmitted to by transmission rod 22, dynamometry end 23 generates deformation under the effect of the pressure, causes
The resistance value of foil gauge 25 generates variation, and foil gauge is connected into electric bridge and drawn increased resistance value by conducting wire and is amplified through signal
Force value is converted to the measurement that electric signal realizes power by device.When pressure sensor assembly 2 needs replacing, jackscrew 7 is first taken out, later
It takes out the screw 6 unclamped on ring flange 5 and removes ring flange 5, so that it may take out pressure head 4；The screw 6 on the second pressing sleeve 3 is unscrewed again, i.e.,
It can be taken off pressure sensor assembly 2 to be replaced.
Built-in force snesor described in the present embodiment selects the fixed pressure head 4 of jackscrew 7 when pressure is less than 30000N, works as pressure
Power selects the fixed pressure head 4 of ring flange 5 when being greater than 30000N, can easily switch between two kinds of fixed forms, precision is equal
The 1 ‰ of rated pressure can be reached.
Described above to be merely exemplary for the purpose of the present invention, and not restrictive, those of ordinary skill in the art understand,
Without departing from the spirit and scope defined by the claims, any modification, the variation or equivalent that can be made, will all fall
Enter within protection scope of the present invention.
Claims (7)
1. a kind of built-in force snesor that direct measuring force may be implemented, it is characterised in that: including the first pressing sleeve (1), pressure
Sensor module (2), the second pressing sleeve (3), pressure head (4) and fixed device, first pressing sleeve (1) are mounted on digitally-controlled press machine
On, the first cylindrical bore (11) are equipped in the free end of first pressing sleeve (1), pressure sensor assembly (2) installation
It is internal in first cylindrical bore (11)；The pressure sensor assembly (2) include force side (21), one end and it is described by
The transmission rod (22) and the dynamometry end (23) being fixedly connected with the transmission rod (22) other end that power end is fixedly connected, the dynamometry
The free end face and the first cylindrical bore (11) inside bottom surface for holding (23) are in close contact, the dynamometry end (23) from
Second cylindrical bore (24) are equipped with by end, are equipped with foil gauge (25) in the second cylindrical bore (24) inside bottom surface,
The free end of the force side (21) is equipped with third cylindrical bore (26), and the outer diameter of the dynamometry end (23) is greater than the power transmission
The outer diameter of bar (22) and the outer diameter of the force side (21)；Described second pressing sleeve (3) one end and the dynamometry end (23) and described
The end face that transmission rod (22) is fixedly connected is in close contact, for the pressure sensor assembly (2) to be fixed on first pressure
(1) inside is covered, shoulder (31) is equipped on the outside of the other end of second pressing sleeve (3), screw hole is equipped on the shoulder (31)
(32), screw (6) passes through the screw hole (32) and is fixedly connected with second pressing sleeve (3) with first pressing sleeve (1)；The pressure
Head (4) includes the first end (41) and second end (42) being fixedly connected, and it is cylindrical that the first end (41) is mounted on the third
Inner hole (26) is internal, and the length of the first end (41) is identical as the depth of the third cylindrical bore (26)；The fixation
Device is used to for the pressure head (4) to be fixed on the third cylindrical bore (26) internal；The fixed device includes passing through spiral shell
The ring flange (5) that nail (6) is connect with the force side (21)；The second end (42) of the pressure head (4) passes through the flange
Through-hole in the middle part of disk (5)；The fixed device includes jackscrew (7), and first through hole is equipped on the side wall of first pressing sleeve (1)
(12), the second through-hole (33) are equipped on the side wall of second pressing sleeve (3), the is equipped on the side wall of the force side (21)
Three through-holes (27), the jackscrew (7) sequentially pass through the first through hole (12), second through-hole (33) and the third through-hole
(27) pressure head (4) is fixed on third cylindrical bore (26) inside.
2. a kind of built-in force snesor that direct measuring force may be implemented according to claim 1, it is characterised in that: institute
State transmission rod (22) be solid cylinder, the force side (21) and the dynamometry end (23) are hollow cylinder, it is described by
Power end (21), the transmission rod (22) and the dynamometry end (23) axle center having the same.
3. a kind of built-in force snesor that direct measuring force may be implemented according to claim 2, it is characterised in that: institute
The diameter Relationship for stating force side (21), the transmission rod (22) and the dynamometry end (23) is dynamometry end (23) force side outer diameter >
(21) outer diameter > transmission rod (22) outer diameter.
4. a kind of built-in force snesor that direct measuring force may be implemented according to claim 3, it is characterised in that: institute
The internal diameter of the outer diameter and first cylindrical bore (11) of stating dynamometry end (23) is clearance fit；Second pressing sleeve (3)
Outer diameter and the internal diameter of first cylindrical bore (11) are clearance fit；The internal diameter of second pressing sleeve (3) and the stress
The outer diameter for holding (21) is clearance fit.
5. according to claim 2~4 its any one of described in it is a kind of direct measuring force may be implemented built-in power sensing
Device a, it is characterised in that: end cap (8) are equipped on the free end face of the dynamometry end (23), for cylindrical to described second
Inner hole (24) is sealed.
6. according to claim 2~4 its any one of described in it is a kind of direct measuring force may be implemented built-in power sensing
Device, it is characterised in that: on the second cylindrical bore (24) bottom surface, in the transmission rod (22) outer diameter and second circle
Anchor ring between bore (24) internal diameter is equipped at least two fourth holes (28), and the foil gauge (25) is arranged in institute
It states between fourth hole (28).
7. a kind of built-in force snesor that direct measuring force may be implemented according to claim 5, it is characterised in that:
On second cylindrical bore (24) bottom surface, in the transmission rod (22) outer diameter and the second cylindrical bore (24) internal diameter
Between anchor ring be equipped at least two fourth holes (28), the foil gauge (25) setting the fourth hole (28) it
Between.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611227526.9A CN106626503B (en) | 2016-12-27 | 2016-12-27 | A kind of built-in force snesor that direct measuring force may be implemented |
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| CN201611227526.9A CN106626503B (en) | 2016-12-27 | 2016-12-27 | A kind of built-in force snesor that direct measuring force may be implemented |
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| CN109127837B (en) * | 2018-09-05 | 2020-08-14 | 安徽瑞研新材料技术研究院有限公司 | Accurate-positioning heavy-load die device |
| CN109760363A (en) * | 2018-12-27 | 2019-05-17 | 西安交通大学 | A kind of device for measuring force suitable for large-tonnage alternating current servo press |
| CN110052220A (en) * | 2019-04-25 | 2019-07-26 | 南京理工大学 | It is a kind of can between real-time detection mold roller extruding force pressure roller |
| CN110133329B (en) * | 2019-05-10 | 2021-10-01 | 江苏塔菲尔新能源科技股份有限公司 | Test fixture |
| DE102019113907A1 (en) * | 2019-05-24 | 2020-11-26 | Voith Patent Gmbh | Regenerative energy absorption device, coupling or joint arrangement with such an energy absorption device as well as damping arrangement with such an energy absorption device |
| CN110954282B (en) * | 2019-10-24 | 2021-08-17 | 中石化石油机械股份有限公司研究院 | Packer rubber cylinder sealing performance testing device and method |
| JP7318135B2 (en) * | 2020-07-06 | 2023-07-31 | エックスワイゼット ロボティクス グローバル インコーポレイテッド | Structural load cell case for containing sensors in robotic systems |
| CN116380330B (en) * | 2023-05-31 | 2023-10-24 | 成都凯天电子股份有限公司 | Liquid-free piezoresistive silicon carbide pressure sensor for high temperature |
| CN117433668A (en) * | 2023-12-08 | 2024-01-23 | 深圳市鑫精诚传感技术有限公司 | Composite force measuring sensor and force measuring method thereof |
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