Spring piece elasticity detection tool

Abstract

The invention provides a spring piece elasticity detection tool which ensures the accuracy of a spring piece elasticity test. The device is used for detecting a structure in which a positioning hole is arranged at one end of the length direction of a leaf spring, and is characterized by comprising a vertical frame which comprises four groups of mutually vertical installation positioning frames at the upper part, and the four groups of installation positioning frames are tiled and fixedly connected to form a rectangular enclosure frame; guide rails arranged in the length direction are arranged on four surfaces of each group of mounting positioning frames; the pressing and attaching assembly comprises vertical sliding rail supports on the two sides, a supporting cross beam, a pressure display device, a downward pressing head and a transmission standard part. The spring piece end fixing assembly comprises a fixed mounting block, and a positioning convex column is arranged at the position, corresponding to the positioning hole, of the fixed mounting block; and the spring piece other end supporting assembly comprises a supporting rotating shaft.

Description

Technical Field

[0001] This invention relates to the technical field of spring sheet testing, specifically to a spring sheet elasticity testing fixture. Background Technology

[0002] The structure of the existing spring sheet detection technology is shown below. Figure 1 The device includes a lower seat 1 and an upper pressing end 2. The lower seat 1 includes a base 102 and two upper protruding mounting brackets 103. There is a gap between the two sets of upper protruding mounting brackets 103. A roller 105 is installed on the top of each set of upper protruding mounting brackets 103. The lower pressing mold 201 of the upper pressing end 2 is located between the gaps. The spring sheet is placed between the two rollers 105. Then the tip of the lower pressing mold 201 moves downward to complete the pressing test. This causes the spring sheet to bend at three points: the two ends and the center position in the length direction, which fixes the span. As a result, the position of the spring sheet cannot be reliably fixed, making the elasticity test data of the spring sheet inaccurate. Therefore, it is urgent to develop an elasticity testing fixture that can reliably and accurately measure the spring sheet. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a spring sheet elasticity testing fixture, which fixes one end of the spring sheet along its length and then presses the middle of the spring sheet along its length by driving the upper pressure end, so that the mechanical fixture can press down at a fixed point when loaded, ensuring the accuracy of the spring sheet elasticity test.

[0004] A spring sheet elasticity testing fixture, used to test the structure of a spring sheet with a positioning hole at one end along its length, characterized in that it comprises: The vertical frame includes four sets of mutually perpendicular mounting and positioning frames at the top. The four sets of mounting and positioning frames are laid flat and fixed together to form a rectangular frame. Each set of mounting and positioning frames has guide rails arranged along the length direction on its four surfaces. The pressure attachment assembly includes two vertical slide rail supports, a support beam, a pressure display device, a pressure head, and standard transmission components; A spring sheet is fixed at one end of an assembly, which includes a fixing block, and the fixing block is provided with a positioning protrusion corresponding to the position of the positioning hole; And the other end support assembly of the spring sheet, which includes a support shaft; The mounting and positioning frames on one pair of sides of the rectangular frame are respectively fixed to the bottom of each set of side-mounted slide rail brackets along their length. Both ends of the support beam are respectively embedded in the inner slide rails of the side-mounted slide rail brackets. The pressure display device is fixed to the middle of the support beam along its length. The sensing end of the pressure display device is press-fitted to the upper end of the lower pressure head, with the lower end of the lower pressure head facing downwards. The transmission standard component is fixed to the support beam, and the upper part of the transmission standard component is fixed to the output end of the tensile testing machine. One end fixing component of the spring sheet is fixedly mounted on one set of mounting and positioning frames on the other opposite side of the rectangular frame, and the other end support component of the spring sheet is fixedly mounted on the other set of mounting and positioning frames on the other opposite side of the rectangular frame.

[0005] Its further features are: All the mounting and positioning frames are made of aluminum profiles. T-bolts are pre-embedded in the guide rails of the mounting and positioning frames, which allows the positions of the pressing component, the spring sheet fixing component at one end, and the spring sheet support component at the other end to be adjusted and arranged according to the actual shape of the spring sheet. The spring sheet end fixing assembly includes a central fixing seat, two end fixing seats, and a fixing mounting block. The fixing mounting block has positioning screw holes at both ends along its length. Each end fixing seat is fixed with a bolt-type bearing at a position corresponding to the positioning screw hole of the fixing mounting block. The bolts of the bolt-type bearings are arranged facing the positioning screw holes. The central fixing seat is used to fix the middle part of the fixing mounting block along its length. After the position of the fixing mounting block along its length is adjusted to the correct position, the bolts of the bolt-type bearings are used to tighten the positioning screw holes at the corresponding positions. Then, the end fixing seats are fastened to the corresponding T-bolts with nuts. The central fixing base includes a vertical plate and a horizontal plate. The vertical plate is fixed to the T-bolt corresponding to the outer side of the mounting positioning frame by a nut. The inner end of the horizontal plate is connected to the alignment hole of the fixing block by an upper protrusion, which makes the installation of the fixing block quick and convenient. The other end support assembly of the spring sheet includes two fixed mounting seats and a support shaft. The two ends of the support shaft along its length are respectively inserted into the corresponding mounting holes of the fixed mounting seats. The bottom of the fixed mounting seats is respectively fastened to the T-bolts of the corresponding positioning mounting frame by nuts. The four corners of the rectangular frame are connected to the bottom horizontal bars by uprights, and the four corners of the two bottom horizontal bars are respectively fixed with support structures. The two bottom crossbars are fixed together by a reinforcing plate. A guide sleeve is provided in the middle of the length direction of the reinforcing plate. The upper stud of the support foot is threaded to the guide sleeve. The support foot is used to reinforce the entire structure. The spring sheet has alignment guide holes on both sides at the middle position along its length. The outer ends of the alignment guide holes are open. The pressing head has a downward protruding guide post at the position of the alignment guide hole. In the pressing state, the downward protruding guide post is inserted into the alignment guide hole. The diameter of the alignment guide hole is slightly larger than that of the downward protruding guide post, which ensures that the spring sheet has a detection travel amount in the pressing detection state, and ensures that the detection is stable and reliable. The pressing head, end fixing seat, and fixed mounting seat are all made of POM material to ensure that the spring sheet will not be damaged.

[0006] After adopting the solution of the present invention, the entire fixture is fixed in the loading area of ​​the universal tensile testing machine. The transmission standard part corresponding to the pressing head is fixed to the output end of the tensile testing machine. After the bottom of the vertical frame is leveled with a level, the end of the spring sheet with a positioning hole in the length direction is fixed by the positioning protrusion of the fixed mounting block. Then, the other end of the spring sheet in the length direction is supported on the support shaft. The tensile testing machine program is set so that the pressing head presses down under the drive of the tensile testing machine. Then, the product force value is read through the pressure display device, which fixes one end of the spring sheet in the length direction. Then, the upper pressing end is driven to press the middle part of the spring sheet in the length direction, so that the mechanical fixture can press down at the fixed point when loading, ensuring the accuracy of the spring sheet elasticity test. Attached Figure Description

[0007] Figure 1 For existing spring sheet elasticity testing fixtures; Figure 2 This is a perspective view of the spring sheet corresponding to the present invention; Figure 3 This is a perspective view of the present invention; Figure 4 For assembling spring sheets in the three-dimensional structure of the present invention Figure 1 ; Figure 5 For assembling spring sheets in the three-dimensional structure of the present invention Figure 2 ; The names corresponding to the serial numbers in the diagram are as follows: Lower seat 1, base 102, upper protruding mounting bracket 103, roller 105, upper pressing end 2, lower pressing mold 201; The spring sheet 100, positioning hole 1001, and alignment guide hole 1002 to be tested Vertical frame 10, mounting and positioning frame 11, guide rail 12, T-bolt 13, upright 14, guide sleeve 15, support foot 16, upper stud 161, reinforcing plate 17, pressing assembly 20, side vertical slide rail bracket 21, supporting crossbeam 22, pressure display device 23, lower pressing head 24, pressing end 241, lower convex guide post 242, transmission standard part 25, inner slide rail 26, spring plate one end fixing assembly 30, middle fixing seat 31, upright plate 311, horizontal plate 312, upper convex post 313, end fixing seat 32, spring plate other end support assembly 40, support shaft 41, fixed mounting seat 42, rectangular frame 50, fixed mounting block 60, positioning protrusion post 61, alignment insertion hole 62, positioning screw hole 63, bolt type bearing 70, bolt 71, bottom crossbar 80, support foot structure 90. Detailed Implementation

[0008] The spring sheet to be tested 100 (see Figure 2 A positioning hole 1001 is provided at one end along the length direction of the ) A spring sheet elasticity testing fixture, see Figures 3-5 It includes a vertical frame 10, a pressing assembly 20, a spring sheet fixing assembly 30, and a spring sheet support assembly 40. The vertical frame 10 includes four sets of mutually perpendicular mounting and positioning frames 11 at the top. The four sets of mounting and positioning frames 11 are laid flat and fixed together to form a rectangular frame 50. Each set of mounting and positioning frames 11 has guide rails 12 arranged along the length direction on its four surfaces. The pressure attachment assembly 20 includes two vertical slide rail supports 21, a support beam 22, a pressure display device 23, a pressure head 24, and a transmission standard component 25; The spring sheet end fixing assembly 30 includes a fixing mounting block 60, and the fixing mounting block 60 is provided with a positioning protrusion 61 corresponding to the position of the positioning hole 1001; The other end support assembly 40 of the spring sheet includes a support shaft 41; The mounting positioning frame 11 on one pair of sides of the rectangular frame 50 is fixedly connected to the bottom of each set of side-mounted slide rail brackets 21 along its length. The two ends of the support beam 22 along its length are respectively embedded in the inner slide rails 26 of the side-mounted slide rail brackets 21. A pressure display device 23 is fixedly installed in the middle of the support beam 22 along its length. The sensing end of the pressure display device 23 is press-fitted to the upper end of the lower pressure head 24. The pressing end 241 of the lower pressure head 24 is arranged downward. The transmission standard component 25 is fixedly connected to the support beam 22. The upper part of the transmission standard component 25 is fixedly connected to the output end of a tensile testing machine (which is an existing mature structure and is not part of the inventive point of this case, and is not shown in the figure). One end of the spring sheet fixing assembly 30 is fixedly mounted on one set of mounting and positioning frames 11 on the other opposite side of the rectangular frame 50, and the other end of the spring sheet support assembly 40 is fixedly mounted on the other set of mounting and positioning frames 11 on the other opposite side of the rectangular frame 50.

[0009] In a specific embodiment, the mounting and positioning frames 11 are all made of aluminum profiles. T-bolts 13 are pre-embedded in the guide rails 12 of the mounting and positioning frames 11, which allows the positions of the pressing assembly 20, the spring sheet one-end fixing assembly 30, and the spring sheet other-end support assembly 40 to be adjusted and arranged according to the actual shape of the spring sheet 100. The spring sheet end fixing assembly 30 includes a central fixing seat 31, two end fixing seats 32, and a fixing mounting block 60. The fixing mounting block 60 has positioning screw holes 63 at both ends along its length. Each end fixing seat 32 is fixed with a bolt-type bearing 70 at a position corresponding to the positioning screw hole 63 of the fixing mounting block 60. The bolts 71 of the bolt-type bearing 70 are arranged facing the positioning screw hole 63. The central fixing seat 31 is used to fix the middle part of the fixing mounting block 60 along its length. After the position of the fixing mounting block 60 along its length is adjusted to the correct position, the bolts 71 of the bolt-type bearing 70 are used to tighten the positioning screw hole 63 at the corresponding position. Then, the end fixing seat 32 is fastened to the corresponding T-bolt 13 with a nut. The central fixing base 31 includes a vertical plate 311 and a horizontal plate 312. The vertical plate 311 is fixed to the T-bolt 13 on the outer side of the corresponding mounting positioning frame 11 by nuts. The inner end of the horizontal plate 312 is connected to the alignment hole 62 of the fixing mounting block 60 through the upper protrusion 313, which makes the installation of the fixing mounting block 60 quick and convenient. The other end support assembly 40 of the spring sheet includes two fixed mounting seats 42 and a support shaft 41. The two ends of the support shaft 41 along its length are respectively inserted into the corresponding mounting holes of the fixed mounting seats 42. The bottom of the fixed mounting seats 42 is respectively fastened to the T-bolts 13 of the corresponding positioning mounting frame 11 by nuts.

[0010] In a specific embodiment, the four corners of the rectangular frame 50 are respectively connected to two bottom horizontal bars 80 by uprights 14, and the four corners of the two bottom horizontal bars 80 are respectively fixed with support structures 90. The two bottom crossbars 80 are fixed together by a reinforcing plate 17. A guide sleeve 15 is provided in the middle of the length direction of the reinforcing plate 17. The upper stud 161 of the support foot 16 is threaded to the guide sleeve 15. The support foot 16 is used to reinforce the entire structure. The spring sheet 100 has alignment guide holes 1002 on both sides of the middle position along its length. The outer ends of the alignment guide holes 1002 are open. The pressing head 24 has a downward protruding guide post 242 corresponding to the position of the alignment guide hole 1002. In the pressing state, the downward protruding guide post 242 is inserted into the alignment guide hole 1002. The diameter of the alignment guide hole 1002 is slightly larger than that of the downward protruding guide post 242, which ensures that the spring sheet 100 has a detection travel amount in the pressing detection state, and ensures that the detection is stable and reliable. The pressing head 24, the end fixing seat 32, and the fixed mounting seat 41 are all made of POM material to ensure that the spring sheet will not be damaged.

[0011] When it works, the whole tooling is fixed in the loading area of the universal tensile testing machine. The transmission standard part corresponding to the lower pressing head is fixedly connected to the output end of the tensile testing machine. After leveling the bottom of the vertical frame with a level, one end of the spring piece with positioning holes in the length direction is fixed through the positioning convex column of the fixed mounting block. Then, the other end of the spring piece in the length direction is supported on the support rotating shaft. Set the program of the tensile testing machine to make the lower pressing head press down under the drive of the tensile testing machine. Then, read the product force value through the pressure display device. It fixes one end of the spring piece in the length direction, and then presses the middle part of the spring piece in the length direction by driving the upper pressing end, so that the mechanical tooling can press down at a fixed point during loading, ensuring the accuracy of the spring piece elasticity test.

[0012] [[ID=​​​​​​

Claims

1. A spring sheet elasticity testing fixture, characterized in that it is used to test the structure of a spring sheet having a positioning hole at one end along its length, wherein... It comprises: Vertical frame, which comprises four sets of mutually perpendicular installation positioning frame, four sets of installation positioning frame flatly fixed combination forms a rectangular frame, each set of installation positioning frame is provided with four surfaces along the length direction of the guide rail; Compression assembly, which comprises two side vertical slide rail support, support beam, pressure display device, lower pressure head, transmission standard parts; Spring sheet one end fixed component, which comprises a fixed mounting block, the fixed mounting block is provided with a positioning protruding column corresponding to the position of the positioning hole; And the other end of the spring sheet supporting component, which comprises a supporting shaft; The length direction of one pair of edges of the rectangular frame is respectively fixed to the bottom of each set of side vertical slide rail support, the length direction of the support beam is respectively embedded in the inner slide rail of the side vertical slide rail support, the length direction of the support beam is fixed with the pressure display device, the sensing end of the pressure display device is connected with the upper end of the lower pressure head, the lower end of the lower pressure head is arranged downward, the transmission standard part is fixed to the support beam, and the output end of the tension machine is fixed to the upper part of the transmission standard part. One end of the spring sheet is fixed on one set of installation positioning frame of the other pair of edges of the rectangular frame, and the other end of the spring sheet is fixed on the other set of installation positioning frame of the other pair of edges of the rectangular frame.

2. The spring leaf elasticity detection tool of claim 1, wherein: The installation positioning frame is made of aluminum profile, and T bolts are embedded in the guide rail of the installation positioning frame in advance, so that the positions of the compression assembly, the one end of the spring sheet fixed component and the other end of the spring sheet supporting component are adjusted and arranged according to the actual shape of the spring sheet.

3. The spring leaf elasticity detection tool of claim 2, wherein: The one end of the spring sheet fixed component comprises a middle fixed seat, two end fixed seats and a fixed mounting block, the length direction of the fixed mounting block is provided with a positioning screw hole, the bolt type bearing is fixed on each end fixed seat corresponding to the position of the positioning screw hole of the fixed mounting block, the bolt of the bolt type bearing is arranged towards the positioning screw hole, the middle fixed seat is used for fixing the length direction of the fixed mounting block, and the bolt of the bolt type bearing is used for fastening the positioning screw hole of the corresponding position after the length direction of the fixed mounting block is adjusted in place.

4. The spring leaf elasticity detection tool of claim 3, wherein: The middle fixed seat comprises a vertical plate and a horizontal plate, the vertical plate is fixed on the T bolt corresponding to the outer side of the installation positioning frame through a nut, and the inner end of the horizontal plate is butted to the alignment insertion hole of the fixed mounting block through an upper protruding column.

5. The spring leaf elasticity detection tool of claim 3, wherein: The other end of the spring sheet supporting component comprises two fixed mounting seats and a supporting shaft, the length direction of the supporting shaft is respectively inserted into the corresponding mounting hole of the fixed mounting seat, and the bottom of the fixed mounting seat is respectively fastened to the T bolt of the corresponding installation positioning frame through a nut.

6. The spring leaf elasticity detection tool of claim 2, wherein: The four corners of the rectangular frame are respectively connected with bottom horizontal rods through vertical rods, and the four corners of the two bottom horizontal rods are respectively fixed with supporting leg structures.

7. The spring leaf elasticity detection tool of claim 6, wherein: The two bottom horizontal rods are fixed through a reinforcing plate, the length direction of the reinforcing plate is provided with a guide sleeve, and the upper stud of the supporting leg is threadedly connected with the guide sleeve.

8. The spring leaf elasticity detection tool of claim 1, wherein: The length direction middle position of the spring piece is provided with alignment guide holes on both sides, the outer ends of the alignment guide holes are open, the lower convex guide column corresponding to the position of the alignment guide hole is provided on the lower pressing head, the lower convex guide column is inserted into the alignment guide hole in the pressed state, and the hole diameter of the alignment guide hole is slightly larger than the lower convex guide column.

9. The spring leaf resiliency testing tool of claim 5, wherein: The lower pressing head, the end fixed seat and the fixed mounting seat are made of POM material.

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