CN114370799B - Spring pressure and height detection method - Google Patents
Spring pressure and height detection method Download PDFInfo
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- CN114370799B CN114370799B CN202111675883.2A CN202111675883A CN114370799B CN 114370799 B CN114370799 B CN 114370799B CN 202111675883 A CN202111675883 A CN 202111675883A CN 114370799 B CN114370799 B CN 114370799B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/04—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
- G01B5/043—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
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Abstract
The invention discloses a method for detecting the pressing and height of a spring, which relates to the field of spring testing and comprises the following steps: s1, detecting and recording the stress of the spring and the expansion and contraction amount of the spring when the spring is stressed, and establishing a rectangular coordinate system of the stress of the spring and the expansion and contraction amount of the spring; s2, converging the detected stress of the spring and the expansion amount data of the spring when the spring is stressed into a rectangular coordinate system to form a relation curve of the stress of the spring and the expansion amount of the spring when the spring is stressed, and determining an inflection point of abrupt change of the curve shape; s3, recording the expansion and contraction amount of the spring corresponding to the inflection point; and S4, subtracting the natural length of the spring from the expansion and contraction amount of the spring at the position of the inflection point to obtain a numerical value of the compression and height. The spring pressure measuring device has the effect of improving the measured spring pressure and the high precision.
Description
Technical Field
The application relates to the field of spring detection, in particular to a method for detecting the height of a spring.
Background
A spring is a mechanical part that works with elasticity. Parts made of elastic materials are changed under the action of external force, and the parts are restored to the original state after the external force is removed. Typically made of spring steel. The spring is of various kinds and is divided into spiral spring, plate spring, special spring, etc. The pressing height of the spring refers to the actual or theoretical height of the coil compression spring as it presses to contact with each turn.
In the related art, the spring pressing height is measured by using a theoretical pressing load which is less than or equal to 1.5 times, and then the spring pressing is measured by using a general measuring tool or a special measuring tool with an indexing value which is less than or equal to 0.02mm, so that the spring pressing load is obtained.
For the related art, the inventor considers that because the theoretical pressure and load are calculated values and have certain correlation with the helix angle and the total number of turns in the actual spring processing process, and adopts a method for detecting the pressure and the height of the spring in the related art, the measured pressure and the height of the spring have larger error with the actual pressure and the height of the spring, and the requirement of pressure and height measurement with higher precision is difficult to meet.
Disclosure of Invention
In order to improve the precision of measuring the spring pressure and the height, the application provides a method for detecting the spring pressure and the height.
The method for detecting the spring pressure and the height adopts the following technical scheme:
a method for detecting the pressing height of a spring comprises the following steps:
s1, detecting and recording stress of a spring on a workbench, and stretching and retracting the spring when the stress is applied;
s2, establishing a rectangular coordinate system of the stress of the spring and the expansion and contraction amount of the spring, and converging the detected stress of the spring and the expansion and contraction amount data of the spring in the rectangular coordinate system to form a relation curve of the stress of the spring and the expansion and contraction amount of the spring in the stress;
s3, determining an inflection point of abrupt change of the curve shape, and recording the expansion and contraction amount of the spring corresponding to the inflection point;
and S4, subtracting the natural length of the spring from the expansion and contraction amount of the spring at the position of the inflection point to obtain a numerical value of the compression and height.
By adopting the technical scheme, the spring force is in direct proportion to the compression amount of the spring through a spring force calculation formula, the stress of the spring and the compression amount of the spring are measured, coordinates of a plurality of measured points are drawn in a rectangular coordinate system, a plurality of measured points are sequentially connected to obtain a measured curve, the curve is approximately equal to a straight line with a slope of k, wherein k is the elasticity coefficient of the spring, namely, the plurality of measured points fluctuate on two sides of the straight line with the slope of k, in the process of continuing compression, when an image starts to deviate obviously, namely, the plurality of points measured after the point fluctuate on two sides of the straight line with the slope of k, namely, the point is an inflection point, and the length of the corresponding spring is the true value of the compression and the height of the spring.
Optionally, in step S1, the stress condition of the spring is measured by a pressure sensor, and the compression length of the spring is recorded when the pressure value on the pressure sensor increases by 1N.
By adopting the technical scheme, the pressure is gradually increased by controlling a variable method, the compression degree of the corresponding spring is measured, coordinates of the corresponding points are recorded in a rectangular coordinate system, a plurality of measuring points are connected in sequence, and the length of the spring corresponding to the point where the image starts to suddenly change is the true value of the pressure and the height of the spring.
Optionally, in step S1, the stress condition of the spring is measured by the pressure sensor, and each time the compression length of the spring is increased by 0.1cm, the corresponding pressure value on the pressure sensor is recorded.
By adopting the technical scheme, the compression amount of the spring is increased by 0.1cm each time by a control variable method, the corresponding pressure value at the moment is recorded, coordinates of corresponding points are recorded in a rectangular coordinate system, a plurality of measuring points are connected in sequence, and the length of the spring corresponding to the point where the image starts to suddenly change is the true value of the pressure and the height of the spring.
Optionally, be fixed with the supporting seat on the workstation, be fixed with the bracing piece that is the level setting on the supporting seat, the spring cup joints on the bracing piece, and the workstation upper surface is provided with the extrusion device that is used for extruding the spring.
By adopting the technical scheme, a worker can sleeve the spring to be detected on the supporting rod and act on the extrusion device, so that the extrusion device extrudes the spring, the measured pressure value and the compression amount of the corresponding spring are drawn in a rectangular coordinate system, and the length of the spring corresponding to the point where the image starts to suddenly change is found in the rectangular coordinate system, namely the true value of the compression and height of the spring.
Optionally, the extrusion device includes to slide and sets up the seat that removes on the workstation, remove and be fixed with on the seat with the coaxial locating lever of bracing piece, cup jointed the slip ring that slides along the locating lever axial on the locating lever, the slip ring is just fixed with the butt ring to the terminal surface of spring, the butt ring is connected with pressure sensor, remove and be provided with on the seat and promote the slip ring and slide along its axial and carry out extruded extrusion mechanism to the spring.
Through adopting above-mentioned technical scheme, the staff cup joints the spring on the bracing piece earlier, then acts on the movable seat, make the movable seat drive the slip ring and move towards the direction that is close to the spring, promote the slip ring and fix the butt ring on the slip ring under extrusion mechanism's effect and extrude the spring, obtain the atress of spring through pressure sensor, when the pressure value of spring both ends butt respectively on butt ring and supporting seat and pressure sensor is 0, the spring is in natural length this moment, extrude the spring, and record the distance that the butt ring removed, namely the compression volume of spring.
Optionally, extrusion mechanism is including fixing a plurality of extrusion barrels on moving the seat and being on a parallel with the locating lever, wear to establish the extrusion stem in the extrusion barrel, wear to be equipped with the extrusion lead screw in the extrusion stem, extrusion lead screw threaded connection is in the extrusion stem, the extrusion stem deviates from the tip of moving the seat and fixes on the slip ring, the extrusion lead screw runs through and moves the seat and be fixed with the drive flywheel at extrusion lead screw tip, be provided with the drive chain of connecting a plurality of drive flywheels on the drive flywheel, it is fixed with one of them extrusion lead screw pivoted extrusion motor to move on the seat.
Through adopting above-mentioned technical scheme, extrusion motor drives one of them extrusion lead screw and rotates, drives a plurality of extrusion lead screws synchronous motion under the effect of drive chain and drive flywheel, and extrusion lead screw drives the extrusion pole of threaded connection on extrusion lead screw and moves towards the direction that is close to the spring to the butt ring on the slip ring extrudees the spring, and measures the compression volume and the atress of spring at extruded in-process.
Optionally, a plurality of sliding grooves have been seted up along radial to the bracing piece outer wall, the sliding groove extends along the bracing piece axial, sliding in the sliding groove is provided with the sliding plate, and the spring cup joints a plurality of on the sliding plate, offer the groove of stepping down that supplies the sliding plate to move along radial on butt ring and the sliding ring, the spacing groove has been seted up to the sliding groove tank bottom wall, spacing inslot is fixed with the limiting spring that pulls the sliding plate towards the sliding inslot motion, be provided with the drive on the bracing piece the sliding plate is along bracing piece radial motion's drive assembly.
Through adopting above-mentioned technical scheme, under limit spring's effect, the sliding plate moves towards being close to bracing piece axis direction, according to the size of spring internal diameter, the staff can act on drive assembly, makes drive assembly drive the sliding plate and moves towards keeping away from bracing piece axis direction to make the sliding plate support the spring, reduce the spring and appear distortion and influence measuring precision in compression process.
Optionally, two drive slots that communicate with the sliding tray have been seted up along its axial at bracing piece both ends, drive slot and bracing piece coaxial and symmetry set up on the bracing piece, the bracing piece internal rotation is connected with the coaxial drive lead screw of and bracing piece, the drive lead screw is rotated to opposite by both ends towards middle screw thread, the symmetry is provided with two drive blocks on the drive lead screw, two the drive block is with the coaxial circular cone of drive lead screw, two the drive block is by drive lead screw center towards both ends diameter increase gradually, be fixed with the actuating lever on the sliding plate, the actuating lever butt corresponds on the drive block, be fixed with the extension rod that runs through the supporting seat on the drive lead screw, extension rod end fixing has the handle that is convenient for drive lead screw pivoted.
Through adopting above-mentioned technical scheme, the rotatable handle of staff makes the drive lead screw rotate to make two drive blocks towards the direction motion that is close to each other or keep away from, the drive block acts on the actuating lever, drives the sliding plate and is close to or keep away from bracing piece axis direction motion under the combined action of spacing spring, thereby the sliding plate is convenient for support to the spring.
Optionally, the lateral wall that the sliding plate deviates from the bracing piece axis has seted up the guide way along its length direction, the sliding motion is provided with the guide block in the guide way, it is convenient for the ball that the guide block slided in the guide way to inlay on the guide block, be fixed with the supporting rod that is on a parallel with the bracing piece on the guide block, the supporting rod runs through the supporting seat along the axial, and the supporting rod diameter is greater than the sliding plate width and can slide in the groove of stepping down, the groove inside wall of stepping down is fixed with and is used for contradicting the supporting rod and promotes the supporting rod along two stripper plates of axial motion, and the distance between two stripper plates is greater than the thickness of sliding plate and makes the sliding plate pass between two stripper plates, and the spring cup joints outside a plurality of supporting rods.
Through adopting above-mentioned technical scheme, when the butt ring butt in the spring and promote the spring compression, the butt pole is along axial motion, turns into sliding friction to rolling friction, is convenient for to the compression of spring, when reducing to begin compression spring, makes measuring result produce great error because of the atress is too little, simultaneously in the motion process, the stripper plate can promote the butt pole along axial motion, reduces to influence measuring result because of the butt pole motion is promoted to the butt pole to the butt ring.
Optionally, the mounting groove has been seted up along the bracing piece axial to workstation upper surface, and the mounting groove swivelling joint has the installation lead screw that is on a parallel with the bracing piece and drives the installation lead screw pivoted installation motor, it runs through the movable seat and with movable seat threaded connection to remove the seat setting in the mounting groove and install the lead screw to slide.
Through adopting above-mentioned technical scheme, the installation motor drives the installation lead screw and rotates, and the installation lead screw drives and removes the seat along bracing piece axial motion, the installation of the spring on the bracing piece of being convenient for with dismantling.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the spring is sleeved on the supporting rod, the extrusion motor drives the abutting ring to extrude the spring, the compression amount and the corresponding pressure of the spring are measured in the extrusion process, a rectangular coordinate system is drawn by the compression amount and the pressure value, and when an obvious inflection point appears in an image, the length of the corresponding spring is the compression and height of the spring;
2. the setting of sliding plate is used for adapting to the spring of different internal diameters size, reduces and leads to the spring distortion because of the spring internal diameter is too big in the extrusion process to lead to there is great error in measuring result.
Drawings
Fig. 1 is a schematic diagram of the overall structure in the embodiment of the present application.
Fig. 2 is a sectional view of the support bar.
Fig. 3 is a schematic structural view of an extrusion mechanism according to an embodiment of the present application.
Reference numerals illustrate:
1. a work table; 2. a support base; 3. a support rod; 4. a mounting groove; 5. a movable seat; 6. installing a lead screw; 7. installing a motor; 8. a positioning rod; 9. a clamping block; 10. a clamping groove; 11. a slip ring; 12. an abutment ring; 13. an extrusion cylinder; 14. an extrusion rod; 15. extruding a screw rod; 16. driving a flywheel; 17. a drive chain; 18. extruding a motor; 19. a sliding groove; 20. a sliding plate; 21. a relief groove; 22. a limit groove; 23. a limit spring; 24. a driving groove; 25. driving a screw rod; 26. a driving block; 27. a baffle; 28. an extension rod; 29. a handle; 30. a guide groove; 31. a guide block; 32. a butt joint rod; 33. a ball; 34. an extrusion plate; 35. and a driving rod.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-3.
The embodiment of the application discloses a method for detecting the pressing height of a spring. Referring to fig. 1, the method comprises the steps of:
s1, placing a spring on a workbench 1, measuring the length of the spring in a natural state, extruding the spring, measuring and recording the stress of the spring through a pressure sensor, measuring and recording the expansion and contraction amount corresponding to the stress of the spring, and in the measuring process, enabling the compression length of the spring to be increased by 0.1cm each time, recording the corresponding pressure value on the pressure sensor, and also enabling the pressure value on the pressure sensor to be increased by 1N each time, and recording the compression amount of the spring at the moment;
s2, establishing a rectangular coordinate system of the stress F of the spring and the expansion and contraction quantity X of the spring, taking the stress F as an ordinate and the expansion and contraction quantity X as an abscissa, converging the detected stress of the spring and the expansion and contraction quantity data of the spring when the stress is applied into the rectangular coordinate system to form a stress relation curve of the spring and the expansion and contraction quantity relation curve of the spring when the stress is applied, and according to a stress formula F=KX of the spring, wherein K is the elasticity coefficient of the spring, and the measured coordinates generally wave near a straight line with a slope of K;
s3, when the stress of the spring is increased to a certain value in the compression process of the spring, an inflection point of abrupt change occurs in the curve shape in the coordinate system, and the expansion and contraction amount of the spring corresponding to the inflection point is recorded;
and S4, subtracting the expansion and contraction amount of the spring at the position of the inflection point from the natural length of the spring to obtain the numerical value of the pressing height.
Referring to fig. 1, a support seat 2 which is vertically arranged is fixed on the upper surface of a workbench 1 through bolts, a support rod 3 which is horizontally arranged is welded on the side wall of the support seat 2, a spring is sleeved on the support rod 3, and an extrusion device for extruding the spring is slidably arranged on the upper surface of the workbench 1.
Referring to fig. 1 and 2, the mounting groove 4 extending along the axial direction of the supporting rod 3 is provided on the upper surface of the workbench 1, the extrusion device comprises a movable seat 5 sliding in the mounting groove 4, the side wall of the movable seat 5 is abutted against the inner side wall of the mounting groove 4 and can slide along the length direction of the mounting groove 4, a mounting screw 6 is rotationally connected in the mounting groove 4, the mounting screw 6 is parallel to the supporting rod 3, a mounting motor 7 is fixed in the mounting groove 4 through a bolt, one end of the mounting screw 6 is rotationally connected on the inner wall of the mounting groove 4, the other end of the mounting screw 6 is welded on the mounting motor 7, and the mounting screw 6 penetrates through the movable seat 5 and is in threaded connection with the movable seat 5. The end face of the movable seat 5, which is opposite to the supporting rod 3, is welded with a positioning rod 8 coaxial with the supporting rod 3, the diameter of the positioning rod 8 is the same as that of the supporting rod 3, a clamping block 9 is adhered to the end face of the supporting rod 3, opposite to the positioning rod 8, and a clamping groove 10 for clamping the clamping block 9 is formed in the positioning rod 8.
Referring to fig. 2 and 3, the extruding device further includes a sliding ring 11 sleeved on the positioning rod 8, the inner wall of the sliding ring 11 abuts against the outer side wall of the positioning rod 8 and can axially move along the positioning rod 8, an abutting ring 12 coaxial with the sliding ring 11 is bonded to the end face of the sliding ring 11 opposite to the spring, the abutting ring 12 is connected with the pressure sensor, and an extruding mechanism for pushing the sliding ring 11 to extrude the spring is arranged on the moving seat 5. The extrusion mechanism comprises two extrusion barrels 13 welded on the movable seat 5, the two extrusion barrels 13 are positioned on the movable seat 5 opposite to the side wall of the spring and parallel to the positioning rod 8, an extrusion rod 14 is arranged in the extrusion barrel 13 in a penetrating mode, the extrusion barrels 13 and the extrusion rod 14 are square rods, the extrusion rod 14 can slide in the extrusion barrel 13 along the length direction of the extrusion barrel 13, one end of the extrusion rod 14 is arranged in the extrusion barrel 13 in a penetrating mode, and the other end of the extrusion rod 14 is bonded on the end face, deviating from the spring, of the sliding ring 11. An extrusion screw rod 15 is arranged in the extrusion rod 14 in a penetrating way, and the extrusion screw rod 15 is parallel to the positioning rod 8 and is in threaded connection with the extrusion rod 14. The two extrusion lead screws 15 horizontally penetrate through the movable seat 5 and are rotatably connected to the movable seat 5. The end part of the extrusion lead screw 15 is welded with a driving flywheel 16, the driving flywheel 16 is provided with a driving chain 17 surrounding the two driving flywheels 16, the movable seat 5 is fixedly provided with an extrusion motor 18 through bolts, and the output shaft of the extrusion motor 18 is welded on one extrusion lead screw 15 and drives the extrusion lead screw 15 to rotate.
Referring to fig. 1 and 2, a plurality of sliding grooves 19 are radially formed in the outer wall of the supporting rod 3, the sliding grooves 19 axially extend along the supporting rod 3 and axially penetrate through the supporting rod 3, sliding plates 20 are slidably arranged in the sliding grooves 19, two ends of each sliding plate 20 are flush with the supporting rod 3, the side walls of the sliding plates 20 are abutted to the inner side walls of the sliding grooves 19 and can radially move along the supporting rod 3 in the sliding grooves 19, abduction grooves 21 penetrating through the abutting ring 12 and the sliding ring 11 are axially formed in the abutting ring 12 and the sliding ring 11, the abduction grooves 21 radially extend along the sliding ring 11 and are in one-to-one correspondence with the sliding plates 20, and when the sliding ring 11 moves onto the supporting rod 3, the sliding plates 20 penetrate through the corresponding sliding grooves 19 and can axially and radially move along the supporting rod 3 to prevent interference of the sliding plates 20 on movement of the sliding ring 11. The limiting groove 22 is formed in the bottom wall of the limiting groove 19, the limiting spring 23 is arranged in the limiting groove 22, one end of the limiting spring is adhered to the sliding plate 20, and the other end of the limiting spring 23 is adhered to the bottom wall of the limiting groove 22 and pulls the sliding plate 20 to move towards the inside of the sliding groove 19.
Referring to fig. 1 and 2, a driving assembly for driving the sliding plate 20 to move radially along the supporting rod 3 is provided on the supporting rod 3, driving grooves 24 are provided at two ends of the supporting rod 3 along the axial direction of the driving assembly, the driving grooves 24 are communicated with the sliding grooves 19, limiting grooves 22 are located between the driving grooves 24, the driving grooves 24 and the supporting rod 3 are coaxially and symmetrically arranged on the supporting rod 3, a driving screw rod 25 is rotatably connected in the supporting rod 3, the driving screw rod 25 is coaxially and penetratingly arranged in the driving grooves 24, the outer wall of the driving screw rod 25 is oppositely rotated from two ends towards the middle thread, two driving blocks 26 are provided on the driving screw rod 25, the two driving blocks 26 are respectively located in the corresponding driving grooves 24 and symmetrically arranged on the driving screw rod 25, the two driving blocks 26 are truncated cones coaxial with the driving screw rod 25, the diameters of the two driving blocks 26 are gradually increased from the center of the driving screw rod 25 towards the two ends, two driving rods 35 are arranged on the sliding plate 20 in a radial direction, one end of the two driving rods 35 is rotatably connected on the sliding plate 20, the other end of the driving rods 35 is abutted against the side wall of the corresponding driving blocks 26, and the driving rods 26 are rotatably arranged on the side wall of the driving screw rod 25 in a radial direction, and the driving spring is not required to move in the radial direction, and the driving rod is driven by the driving rod 35, and the driving rod is not rotatably driven in the driving rod is in the radial direction, and the driving rod is required to move, and has the driving rod is not in the driving rod and has the driving motion. The two ends of the driving groove 24 are adhered with baffle plates 27 for closing the opening of the driving groove 24, the end part of the driving screw rod 25, which is close to the supporting seat 2, is welded with an extension rod 28 which is coaxial with the driving screw rod 25 and penetrates through the adjacent baffle plates 27 and the supporting seat 2, and the end part of the extension rod 28 is welded with a handle 29 which is convenient for the rotation of the extension rod 28.
Referring to fig. 1 and 2, a guide groove 30 is formed in a side wall of the sliding plate 20, which faces away from the axis of the supporting rod 3, the guide groove 30 extends along the length direction of the guide groove 30, the cross section of the guide groove 30 is dovetail-shaped, a guide block 31 is slidably arranged in the guide groove 30, the cross section of the guide block 31 is dovetail-shaped matched with the guide groove 30, the guide block 31 is prevented from moving in the guide groove 30 in the radial direction, a plurality of balls 33 which are convenient for the guide block 31 to move in the guide groove 30 are embedded on the end face of the bottom wall of the guide groove 30 in a abutting mode, the side wall of the guide block 31, which faces away from the balls 33, is welded with a abutting rod 32, the abutting rod 32 is parallel to the supporting rod 3, two ends of the abutting rod 32 are flush with two ends of the supporting rod 3, and axially penetrates through the supporting seat 2 in the sliding process. The diameter of the abutting rod 32 is larger than the thickness of the sliding plate 20 and smaller than the opening of the yielding groove 21, so that the abutting rod 32 can move in the yielding groove 21 along the axial direction and the radial direction, two extrusion plates 34 are adhered to the inner side wall of the yielding groove 21, the distance between the two extrusion plates 34 is smaller than the diameter of the abutting rod 32 and larger than the thickness of the sliding plate 20, and the extrusion plates 34 can push the abutting rod 32 to move.
According to the size of the inner diameter of the spring, the positions of the plurality of abutting rods 32 are adjusted, so that the plurality of abutting rods 32 are abutted against the inner wall of the spring, when the abutting rings 12 extrude the spring, the sliding plate 20 slides relatively in the yielding groove 21, the extruding plate 34 pushes the abutting rods 32 to slide axially, and the spring is compressed under the action of the abutting rings 12 and the supporting seat 2.
The implementation principle of the spring pressure and height detection method in the embodiment of the application is as follows: the spring is sleeved on the supporting rod 3, a worker can act on the extrusion motor 18 to enable the abutting ring 12 to extrude the spring, the stress and the expansion amount of the spring are recorded in the extrusion process, the expansion amount and the stress are drawn in a rectangular coordinate system, and when an obvious inflection point position appears in an image, the length of the spring is the pressing length of the spring.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (5)
1. The method for detecting the spring pressure and the height is characterized by comprising the following steps of:
s1, detecting and recording stress of a spring on a workbench (1) and stretching the spring when the spring is stressed;
s2, establishing a rectangular coordinate system of the stress of the spring and the expansion and contraction amount of the spring, and converging the detected stress of the spring and the expansion and contraction amount data of the spring in the rectangular coordinate system to form a relation curve of the stress of the spring and the expansion and contraction amount of the spring in the stress;
s3, determining an inflection point of abrupt change of the curve shape, and recording the expansion and contraction amount of the spring corresponding to the inflection point;
s4, subtracting the natural length of the spring from the expansion and contraction amount of the spring at the position of the inflection point to obtain a numerical value of the compression and height; in the step S1, the stress condition of the spring is measured through a pressure sensor, and the compression length of the spring at the moment is recorded when the pressure value of the pressure sensor is increased by 1N; in the step S1, the stress condition of the spring is measured through the pressure sensor, and the corresponding pressure value on the pressure sensor is recorded when the compression length of the spring is increased by 0.1 cm; a supporting seat (2) is fixed on the workbench (1), a supporting rod (3) which is horizontally arranged is fixed on the supporting seat (2), a spring is sleeved on the supporting rod (3), and an extrusion device for extruding the spring is arranged on the upper surface of the workbench (1); the extrusion device comprises a movable seat (5) arranged on a workbench (1) in a sliding manner, a positioning rod (8) coaxial with a supporting rod (3) is fixed on the movable seat (5), a sliding ring (11) axially sliding along the positioning rod (8) is sleeved on the positioning rod (8), an abutting ring (12) is fixed on the end face, opposite to a spring, of the sliding ring (11), the abutting ring (12) is connected with a pressure sensor, and an extrusion mechanism for pushing the sliding ring (11) to axially slide along the sliding ring and extruding the spring is arranged on the movable seat (5); the extrusion mechanism comprises a plurality of extrusion barrels (13) which are fixed on the movable seat (5) and are parallel to the positioning rods (8), extrusion rods (14) are arranged in the extrusion barrels (13) in a penetrating mode, extrusion lead screws (15) are arranged in the extrusion rods (14) in a penetrating mode, the extrusion lead screws (15) are connected in the extrusion rods (14) in a threaded mode, the end portions, deviating from the movable seat (5), of the extrusion rods (14) are fixed on the sliding ring (11), the extrusion lead screws (15) penetrate through the movable seat (5) and are fixedly provided with driving flywheel (16) at the end portions of the extrusion lead screws (15), driving chains (17) which are connected with the driving flywheel (16) are arranged on the driving flywheel (16), and an extrusion motor (18) which drives one of the extrusion lead screws (15) to rotate is fixed on the movable seat (5).
2. The method for detecting the spring pressure and height according to claim 1, wherein: a plurality of sliding grooves (19) are formed in the outer wall of the supporting rod (3) in the radial direction, the sliding grooves (19) axially extend along the supporting rod (3), sliding plates (20) are slidably arranged in the sliding grooves (19), springs are sleeved on the sliding plates (20), a stepping groove (21) for the sliding plates (20) to move in the radial direction is formed in the abutting ring (12) and the sliding ring (11), a limiting groove (22) is formed in the bottom wall of the sliding groove (19), limiting springs (23) for pulling the sliding plates (20) to move towards the sliding grooves (19) are fixedly arranged in the limiting groove (22), and driving components for driving the sliding plates (20) to move in the radial direction along the supporting rod (3) are arranged on the supporting rod (3).
3. A method for detecting the spring pressure and height according to claim 2, wherein: two drive grooves (24) communicated with the sliding grooves (19) are formed in the two ends of the support rod (3) along the axial direction of the support rod, the drive grooves (24) are coaxial with the support rod (3) and symmetrically arranged on the support rod (3), the drive screw (25) which is coaxial with the support rod (3) is rotationally connected to the support rod (3), the two ends of the drive screw (25) are oppositely rotated towards middle threads, two drive blocks (26) are symmetrically arranged on the drive screw (25), the two drive blocks (26) are conical tables coaxial with the drive screw (25), the diameters of the two ends of the drive blocks (26) are gradually increased towards the center of the drive screw (25), a drive rod (35) is fixed on the sliding plate (20), the drive rod (35) is abutted to the side wall of the corresponding drive block (26), and a handle (29) which penetrates through a support seat (2) is fixed on the drive screw (25), and the end of the extension rod (28) is fixedly provided with a handle (29) which is convenient for the rotation of the drive screw (25).
4. A method of detecting spring pressure and height according to claim 3, wherein: the utility model provides a sliding plate (20) deviate from lateral wall of bracing piece (3) axis and offered guide way (30) along its length direction, guide way (30) internal sliding is provided with guide block (31), the last ball (33) that are convenient for guide block (31) slide in guide way (30) that inlay of guide block (31), be fixed with on guide block (31) and be on a parallel with bracing piece (3) supporting rod (32), supporting seat (2) are run through along the axial to supporting rod (32), supporting rod (32) diameter is greater than sliding plate (20) width and can slide in groove (21) of stepping down, stepping down groove (21) inside wall is fixed with and is used for contradicting supporting rod (32) and promotes two stripper plates (34) of supporting rod (32) along axial motion, and the distance between two stripper plates (34) is greater than the thickness of sliding plate (20) makes sliding plate (20) can pass between two stripper plates (34), and the spring cup joints outside a plurality of supporting rod (32).
5. The method for detecting the spring pressing height according to claim 4, wherein: the upper surface of the workbench (1) is axially provided with a mounting groove (4) along the supporting rod (3), a mounting screw (6) parallel to the supporting rod (3) and a mounting motor (7) for driving the mounting screw (6) to rotate are rotationally connected in the mounting groove (4), and the movable seat (5) is slidably arranged in the mounting groove (4) and the mounting screw (6) penetrates through the movable seat (5) and is in threaded connection with the movable seat (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111675883.2A CN114370799B (en) | 2021-12-31 | 2021-12-31 | Spring pressure and height detection method |
Applications Claiming Priority (1)
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Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003057421A1 (en) * | 2001-12-28 | 2003-07-17 | Honda Giken Kogyo Kabushiki Kaisha | Leg-type moving robot and floor reaction force detection device therefor |
| CN102537436A (en) * | 2010-12-28 | 2012-07-04 | 陈耕田 | HS-type pressure-adjustable explosion-proof valve core |
| WO2014014350A1 (en) * | 2012-07-17 | 2014-01-23 | Ihc Systems B.V. | Method and device for determining a height of a settled bed in a mixture in a loading space |
| CN203689772U (en) * | 2014-01-17 | 2014-07-02 | 唐郑一 | Spring elastic force experiment instrument |
| CN104359662A (en) * | 2014-11-11 | 2015-02-18 | 河海大学常州校区 | Cylindrical compression spring parameter testing method |
| CN208060137U (en) * | 2018-02-09 | 2018-11-06 | 浙江兰菱机械有限公司 | A kind of spring tension and compression testing machine |
| CN208060134U (en) * | 2018-02-09 | 2018-11-06 | 浙江兰菱机械有限公司 | Compression spring fatigue tester |
| CN108838308A (en) * | 2018-06-15 | 2018-11-20 | 南京溧水丽华弹簧厂 | A kind of spring pressure spring machine convenient for detecting decrement |
| CN208383105U (en) * | 2018-07-11 | 2019-01-15 | 鹤山麦瑟文卫浴有限公司 | A kind of pressure spring testing device |
| CN109632222A (en) * | 2019-01-18 | 2019-04-16 | 上海交通大学 | A kind of spring rate measuring device and its measurement method |
| CN209990828U (en) * | 2019-05-09 | 2020-01-24 | 东莞天平弹簧五金制品有限公司 | Damping spring |
| CN110762146A (en) * | 2019-10-30 | 2020-02-07 | 北京裕泰行新材料科技有限公司 | H-shaped spring and production method thereof |
| CN110836239A (en) * | 2019-11-11 | 2020-02-25 | 株洲时代新材料科技股份有限公司 | Nonlinear air spring and transverse stiffness design method thereof |
| CN211601793U (en) * | 2020-01-13 | 2020-09-29 | 中广核铀业发展有限公司 | Spring pressing and height detecting device |
| CN112283475A (en) * | 2020-11-06 | 2021-01-29 | 杭州偶耀智能科技有限公司 | Pipeline connecting equipment with adjustable diameter |
| CN112484596A (en) * | 2020-11-24 | 2021-03-12 | 扬州工业职业技术学院 | Automobile inspection tool convenient for inspecting automobile bumper |
| CN213274756U (en) * | 2020-09-08 | 2021-05-25 | 重庆华得利机械有限公司 | Force measurement auxiliary tool |
| CN113820058A (en) * | 2021-10-15 | 2021-12-21 | 广西电网有限责任公司柳州供电局 | Device and method for testing spring force of bolt mechanism of on-load voltage regulating switch |
-
2021
- 2021-12-31 CN CN202111675883.2A patent/CN114370799B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003057421A1 (en) * | 2001-12-28 | 2003-07-17 | Honda Giken Kogyo Kabushiki Kaisha | Leg-type moving robot and floor reaction force detection device therefor |
| CN102537436A (en) * | 2010-12-28 | 2012-07-04 | 陈耕田 | HS-type pressure-adjustable explosion-proof valve core |
| WO2014014350A1 (en) * | 2012-07-17 | 2014-01-23 | Ihc Systems B.V. | Method and device for determining a height of a settled bed in a mixture in a loading space |
| CN203689772U (en) * | 2014-01-17 | 2014-07-02 | 唐郑一 | Spring elastic force experiment instrument |
| CN104359662A (en) * | 2014-11-11 | 2015-02-18 | 河海大学常州校区 | Cylindrical compression spring parameter testing method |
| CN208060137U (en) * | 2018-02-09 | 2018-11-06 | 浙江兰菱机械有限公司 | A kind of spring tension and compression testing machine |
| CN208060134U (en) * | 2018-02-09 | 2018-11-06 | 浙江兰菱机械有限公司 | Compression spring fatigue tester |
| CN108838308A (en) * | 2018-06-15 | 2018-11-20 | 南京溧水丽华弹簧厂 | A kind of spring pressure spring machine convenient for detecting decrement |
| CN208383105U (en) * | 2018-07-11 | 2019-01-15 | 鹤山麦瑟文卫浴有限公司 | A kind of pressure spring testing device |
| CN109632222A (en) * | 2019-01-18 | 2019-04-16 | 上海交通大学 | A kind of spring rate measuring device and its measurement method |
| CN209990828U (en) * | 2019-05-09 | 2020-01-24 | 东莞天平弹簧五金制品有限公司 | Damping spring |
| CN110762146A (en) * | 2019-10-30 | 2020-02-07 | 北京裕泰行新材料科技有限公司 | H-shaped spring and production method thereof |
| CN110836239A (en) * | 2019-11-11 | 2020-02-25 | 株洲时代新材料科技股份有限公司 | Nonlinear air spring and transverse stiffness design method thereof |
| CN211601793U (en) * | 2020-01-13 | 2020-09-29 | 中广核铀业发展有限公司 | Spring pressing and height detecting device |
| CN213274756U (en) * | 2020-09-08 | 2021-05-25 | 重庆华得利机械有限公司 | Force measurement auxiliary tool |
| CN112283475A (en) * | 2020-11-06 | 2021-01-29 | 杭州偶耀智能科技有限公司 | Pipeline connecting equipment with adjustable diameter |
| CN112484596A (en) * | 2020-11-24 | 2021-03-12 | 扬州工业职业技术学院 | Automobile inspection tool convenient for inspecting automobile bumper |
| CN113820058A (en) * | 2021-10-15 | 2021-12-21 | 广西电网有限责任公司柳州供电局 | Device and method for testing spring force of bolt mechanism of on-load voltage regulating switch |
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