A leaf spring detector

Abstract

The utility model discloses a leaf spring detector, and the relative position of side mark and first scale mark is configured to display the size of target position; in the state that first work surface and second work surface are clamped in leaf spring target position, and leaf spring leans against the shape inspection strip, the relative position of total mark and first scale mark is configured to display the size of leaf spring width direction target position, and the relative position of second scale mark and pointer calibration center thickness is configured as a reference, and the center of edge arc symmetry proportion form is detected, in the state that third work surface leans against the upper surface of leaf spring, the shape inspection strip moves to the end of the shape inspection strip and the recess bottom surface of main ruler abut, and the relative position of side mark and first scale mark is configured to display the depth of recess. The utility model aims at providing a leaf spring detector to solve the problem that the key size of leaf spring cannot be accurately measured in the prior art.

Description

Technical Field

[0001] This utility model belongs to the field of detection equipment technology, specifically, it relates to a leaf spring detector. Background Technology

[0002] Automotive spring flat steel is a crucial material used in automobile manufacturing, and its high quality in terms of shape and dimensional accuracy significantly impacts its performance. After leaf springs are shaped through the K1 and K2 holes, various complex factors can lead to unreliable shape and dimensions, including the arc shape corresponding to the edge center angle, the center angle corresponding to the arc, the flatness and straightness of the plate, and the dimensions of the working surface. Previous inspections using edge templates or visual inspection yielded unsatisfactory results and could not guarantee the shape and dimensional accuracy of the spring flat steel.

[0003] Therefore, the development of a leaf spring detector is necessary to achieve high-precision detection of the shape and size of a circular arc leaf spring corresponding to any central angle from 0° to 180° on the edge. This detector can more accurately detect the shape and size of the leaf spring. It is simple to operate, has low cost, and the detection results can provide certain guidance for practical production. This is a technical problem that urgently needs to be solved. Utility Model Content

[0004] The purpose of this invention is to provide a leaf spring detector to solve the problems of inaccurate measurement of key dimensions of leaf springs in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution: In one aspect, this utility model proposes a leaf spring detector, comprising: The main scale includes a main scale body and a first measuring jaw and a positioning stop connected thereto. A first scale mark is formed on the main scale body along the length direction of the main scale. A second scale mark is formed on the first measuring jaw along the width direction of the main scale. A first working surface is formed on one end of the first measuring jaw along the width direction of the main scale. A positioning stop working surface is formed on the other end of the positioning stop along the width direction of the main scale. A third working surface is formed at the end of the main scale body along its length.

[0006] A shape detection and dimensional mechanism is slidably connected to the main scale body. The shape detection and dimensional mechanism can move relative to the main scale body along the length direction of the main scale. The shape detection and dimensional mechanism includes a main scale and a second measuring claw connected thereto. A second working surface is formed on the second measuring claw along the width direction of the main scale. A shape inspection mechanism is slidably connected to the main scale body. The shape inspection mechanism can move relative to the main scale body along the length direction of the main scale. The shape inspection mechanism includes a side mark and a shape inspection strip connected to the side mark. The shape inspection strip extends along the length direction of the main scale and is used to abut and position the leaf spring. The side marker drives the shape inspection strip to move relative to the main scale body to the target position, and the relative position of the side marker and the first scale mark is configured to display the size of the target position; With the first working surface and the second working surface clamped at the target position of the leaf spring, the relative position of the total mark and the first scale mark is configured to display the size of the target position in the width direction of the leaf spring, and the second scale mark is configured to display the size direction of the target position in the thickness direction of the leaf spring; With the third working surface perpendicularly abutting against the upper surface of the leaf spring, the shape inspection bar moves relative to the main scale body until the end measuring surface of the shape inspection bar abuts against the bottom surface of the groove of the main scale, and the relative position of the edge mark and the first scale mark is configured to display the depth of the groove.

[0007] In some embodiments of this application, a first working portion is formed on the first measuring claw; A second working portion is formed on the second measuring jaw; The first and second working parts are configured to clamp at two target positions corresponding to the chord length on the edge arc of the leaf spring, for measuring the distance between the two target positions. The target position can be directly defined as the chord length. The design purpose and sole function of the first and second working parts is to measure the chord length. Their structure is arc-shaped, unlike vernier calipers which cannot measure the chord length.

[0008] In some embodiments of this application, the shape inspection mechanism further includes a first calibration pin; A first sliding groove is formed on the main scale body; The edge marker and the shape inspection strip are connected by the first calibration pin, which is slidably connected in the first sliding groove.

[0009] In some embodiments of this application, the first calibration pin is provided with a first calibration adjustment groove along the length direction of the main scale, and the side marker is provided with a plurality of first adjustment connection holes; When the edge marker is adjusted to the target position relative to the first calibration pin, a plurality of first locking members pass through a plurality of first adjustment connecting holes, and the ends of the first locking members are inserted into the first calibration adjustment groove to lock the relative position of the edge marker and the first calibration pin.

[0010] In some embodiments of this application, a second calibration adjustment groove is provided on the first calibration pin along the length direction of the main scale, and a plurality of second adjustment connection holes are provided on the shape inspection strip; When the test strip is adjusted to the target position relative to the first calibration pin, a plurality of second locking members pass through a plurality of second adjustment connecting holes, and the ends of the second locking members are inserted into the second calibration adjustment groove to lock the relative position of the test strip and the first calibration pin.

[0011] Locked in position with the second calibration adjustment slot.

[0012] In some embodiments of this application, a second sliding groove is formed on the shape detection and dimensional mechanism; With the shape inspection mechanism slidably connected to the first sliding groove, the main ruler body and the shape inspection strip are slidably connected to the second sliding groove.

[0013] In some embodiments of this application, the first sliding groove includes a first direction through groove and a second direction through groove. The first direction through groove penetrates the main ruler along the thickness direction of the main ruler, and the second direction through groove penetrates the main ruler from the first direction through groove along the width direction of the main ruler.

[0014] In some embodiments of this application, the shape inspection strip extends from the second direction through the groove to the lower side of the main scale; The first calibration pin is accommodated within the first direction through groove and the second direction through groove; The side marker extends from the through groove in the first direction to the front side of the main scale.

[0015] In some embodiments of this application, the shape detection and dimensional measurement mechanism further includes a shape detection and dimensional measurement body, and the second measuring claw is connected to the shape detection and dimensional measurement body; the main body is provided with a plurality of third adjustment connection holes; The second sliding groove is formed on the main body of the shape detection dimension along the length direction of the main scale. The main body for measuring the external dimensions has a third calibration adjustment groove along the length of the main ruler. When the overall calibration is adjusted to the target position relative to the third calibration adjustment slot, a plurality of third locking members pass through a plurality of the third adjustment connection holes, and the ends of the third locking members are locked to the position of the third calibration adjustment slot.

[0016] In some embodiments of this application, a first positioning surface is formed on the main body of the ruler; the first positioning surface should also include a first working surface, a first working part, one end of the first sliding groove, and a positioning stop working surface. A second positioning surface is formed on the shape detection and dimensional mechanism; the second positioning surface should also include a second working part. A third positioning surface is formed on one end of the shape detection mechanism; this mainly refers to the side of the starting line at one end of the shape detection strip. With the first positioning surface, the second positioning surface, and the third positioning surface abutting against each other, the zero mark of the main scale, the edge scale, and the first scale mark are adjusted to be aligned, and the first locking member, the second locking member, and the third locking member lock the positions of the edge scale, the shape detection strip, and the main scale.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are: A first measuring jaw is set on the main scale, forming a first working surface. A second measuring jaw is set on the shape detection mechanism, forming a second working surface. The first and second working surfaces are clamped on the dimensions to be measured of the leaf spring. By reading the value of the total scale relative to the first scale mark, the width and thickness of the leaf spring are obtained. The first and second working parts detect the chord length corresponding to the edge arc. The position of the leaf spring's groove is read by reading the value of the edge mark relative to the first scale mark; the edge width is read by reading the value of the edge mark relative to the first scale mark; using the third working surface as a reference plane, the groove depth of the leaf spring is read by reading the value of the edge mark relative to the first scale mark; the thickness is located by the pointer center, and the arc shape of the leaf spring's end is read on the second scale mark; thus, the key dimensions of the leaf spring are measured using a leaf spring detector. The straightness of the upper and lower surfaces is checked by a shape inspection strip. The detector is simple to operate, low in cost, and the test results can provide certain guidance for practical production.

[0018] Other features and advantages of this utility model will become clearer after reading the specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view of an embodiment of the leaf spring measuring device used in the leaf spring measuring method proposed in this invention; Figure 2 yes Figure 1 Sectional view at point A in the middle; Figure 3 This is a schematic diagram illustrating one embodiment of the leaf spring measuring instrument used in the leaf spring measurement method proposed in this invention; Figure 4 This is a second schematic diagram illustrating the use of a leaf spring measuring device in an embodiment of the leaf spring measuring method proposed in this invention. Figure 5 This is a front view of an embodiment of the main scale of the leaf spring measuring instrument used in the leaf spring measuring method proposed in this invention; Figure 6 This is a front view of an embodiment of the shape detection and dimensioning mechanism of the leaf spring measuring device used in the leaf spring measurement method proposed in this invention; Figure 7 This is a side view of an embodiment of the shape detection and dimensioning mechanism of the leaf spring measuring device used in the leaf spring measurement method proposed in this invention; Figure 8 This is a schematic diagram of the overall structure of an embodiment of the shape inspection mechanism of the leaf spring measuring device used in the leaf spring measurement method proposed in this invention; Figure 9 This is a schematic diagram of the side marker and first calibration pin of a leaf spring measuring instrument used in a leaf spring measuring method proposed in this invention. Figure 10 This is a side view of one embodiment of the leaf spring measuring device used in the leaf spring measuring method proposed in this invention; Figure 11 This is a side view of an embodiment of the shape inspection strip of the leaf spring measuring device used in the leaf spring measuring method proposed in this invention; In the picture, 100. Main scale; 110. Main scale body; 111. First scale mark; 112. Third working surface; 113. First locking element; 114. First sliding groove; 1143. Anti-wear protrusion; 115. Positioning stop working surface; 120. First measuring jaw; 121. Second scale mark; 1211. Sliding groove; 122. First working surface; 123. First working part; 200. External dimension inspection mechanism; 210. Main mark; 211. Third locking element; 212. Third adjustment connecting hole; 213. Second moving part; 220. Second measuring jaw; 221. Second working surface; 222. Second working part; 223. Pointer; 230. Second positioning surface; 240. External dimension inspection body; 241. Third calibration adjustment groove; 250. Second sliding groove; 300. Shape inspection mechanism; 310. Edge mark 311. Second locking element; 312. First adjusting connecting hole; 313. First moving part; 320. Form inspection strip; 321. Second adjusting connecting hole; 322. Working line; 323. Starting line; 324. Measuring surface; 325. Plane; 326. Arc surface; 330. First calibration pin; 331. First calibration adjustment groove; 332. Second calibration adjustment groove; 340. Third positioning surface; 400. Leaf spring; 410. First end; 420. Second end; 430. Groove; 431. Bottom surface; 440. Upper surface; 450. Lower surface; 461. First intersection point; 462. Second intersection point; 471. First side width; 472. Second side width; 473. Third intersection point; 474. Third side width; 475. Fourth side width; 476. Fourth intersection point; 500. Positioning surface. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The following disclosure provides many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0027] In some embodiments of this application, such as Figure 1 , Figure 3 , Figure 4 As shown, this relates to a leaf spring detector.

[0028] In other embodiments of this application, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 As shown, a leaf spring measurement method is provided, which uses the aforementioned leaf spring detector to measure the key dimensions of the leaf spring.

[0029] like Figure 1 , Figure 3 , Figure 4 The leaf spring detector includes a main scale 100, an external dimension detection mechanism 200, and a shape detection mechanism 300.

[0030] like Figure 5 As shown, the main scale 100 includes a main scale body 110 and a first measuring claw 120 connected thereto.

[0031] Specifically, the first measuring claw 120 is connected to one end of the main scale body 110 along its length.

[0032] On the main body 110, a first scale mark 111 is formed along its length. On the first scale mark 111, the zero point is represented by a circle ○, and the dots of different colors represent 5mm, 10mm and 20mm respectively. They can be accumulated and superimposed to represent the exponential value, which is convenient for reading the value.

[0033] A second scale mark 121 is formed on the first measuring jaw 120 along its width direction.

[0034] A sliding groove 1211 is provided on the first measuring jaw 120, which can slide along the extension direction of the second scale mark 121. The pointer 223 can slide along the sliding groove 1211 and is fixed by a bolt penetrating the first measuring jaw 120. It is used to calibrate the center thickness and serves as a reference for the centrally symmetrical proportional shape.

[0035] The main scale body 110 is set perpendicularly to the first measuring claw 120.

[0036] The shape measurement mechanism 200 is movable along the length of the main scale 100. The shape measurement mechanism 200 includes a main scale 210 and a second measuring jaw 220 connected to the main scale 210.

[0037] A first working surface 122 is formed on the first measuring jaw 120 along the width direction of the main scale 100.

[0038] A second working surface 221 is formed on the second measuring jaw 220 along the width direction of the main scale 100.

[0039] The first working surface 122 and the second working surface 221 are clamped on the two ends of the leaf spring 400 in the width direction or on the upper surface 440 and the lower surface 450 in the thickness direction of the two ends.

[0040] Specifically, the two ends of the leaf spring 400 in the width direction or in the thickness direction are defined as the first end 410 and the second end 420, respectively.

[0041] The first working surface 122 and the second working surface 221 are respectively clamped on the first end 410 and the second end 420.

[0042] The first working surface 122 and the second working surface 221 are respectively clamped between the upper surface 440 and the lower surface 450 of the first end 410 or the upper surface 440 and the lower surface 450 of the second end 420.

[0043] The shape inspection mechanism 300 can move along the length of the main scale 100.

[0044] like Figure 8 , Figure 9 , Figure 10 , Figure 11 As shown, the shape inspection mechanism 300 includes a side marker 310 and a shape inspection strip 320. The side marker 310 is connected to the shape inspection strip 320. The shape inspection strip 320 is arranged along the length direction of the main scale 100.

[0045] To facilitate the movement of the shape inspection mechanism 300 relative to the main scale 100, a first moving part 313 is provided on the side mark 310. The first moving part 313 protrudes from the side mark 310, making it easy for the operator to move the shape inspection mechanism 300 relative to the main scale 100 by pushing the first moving part 313.

[0046] With the first working surface 122 and the second working surface 221 clamped at both ends of the leaf spring width and the leaf spring 400 abutting against the inspection bar 320, the inspection bar 320 detects straightness. The first working part 123 and the second working part 222 are clamped at the target position corresponding to the chord length of the leaf spring end arc, detecting the chord length dimension at two points. The relative position of the overall scale and the first scale mark is configured to display the chord length dimension corresponding to the leaf spring end arc. The shape inspection strip 320 is used to abut against the leaf spring 400.

[0047] Specifically, a working line 322 is formed at the lower end of a plane 325 at one end and an arc surface 326 at the other end of the shape inspection strip 320 in the width direction. The working line 322 is a straight line. In the length direction of the shape inspection strip 320, one end is the starting line 323 and the other end is the measuring surface 324.

[0048] The working line 322 is aligned with the zero mark of the second scale 121.

[0049] The working line 322 extends along the length of the main scale 100 on the shape inspection strip 320.

[0050] During the testing of the leaf spring 400 using a leaf spring detector, the first measuring jaw 120 and the second measuring jaw 220 are clamped on the leaf spring 400, and the leaf spring 400 abuts against the shape inspection strip 320.

[0051] When the operator pushes the side marker 310 to move the shape inspection strip 320 relative to the main scale body 110 to the target position, the relative position of the side marker 310 and the first scale mark 111 is configured to display the size of the target position.

[0052] Specifically, the zero mark of the marginal mark 310 corresponds to the scale value indicated on the first scale mark 111, which is the size of the target position.

[0053] With the first working surface 122 and the second working surface 221 clamping the leaf spring 400 at the target position, the relative position of the total mark 210 and the first scale mark 111 is configured to display the size of the target position in the width direction of the leaf spring; The second scale mark 121 is configured to display the direction of the target position of the leaf spring thickness dimension.

[0054] To facilitate the operator in moving the shape detection mechanism 200 relative to the main scale 100, a second moving part 213 is provided on the shape detection main body 240. The second moving part 213 protrudes out of the shape detection main body 240, so that the operator can move the shape detection mechanism 200 relative to the main scale 100 by pushing the second moving part 213.

[0055] A third working surface 112 is formed at the end of the length of the main body 110.

[0056] The first positioning surface, the second positioning surface 230, and the third positioning surface 340 are coplanar on the positioning surface 500. The total mark 210 and the edge mark 310 are aligned with the zero mark of the first scale mark 111. The third working surface 112 and the measuring surface 324 are on the same plane.

[0057] The first positioning surface should include a first working surface 122, a first working part 123, one end of the first sliding groove 114, and a positioning stop working surface 115.

[0058] The second positioning surface 230 should also include a second working section.

[0059] The third positioning surface 340 includes the side of the starting line at one end of the shape inspection mechanism.

[0060] The third working surface 112 and the first measuring claw 120 are respectively located at the two ends of the length of the main scale body 110.

[0061] The third working surface 112 is used as a reference surface when measuring the depth of the groove 430 of the leaf spring 400.

[0062] With the third working surface 112 perpendicularly abutting against the upper surface 440 of the leaf spring 400, the shape inspection strip 320 moves relative to the main scale body 110 until the end measuring surface 324 of the shape inspection strip 320 abuts against the bottom surface 431 of the groove 430, and the relative position of the edge mark 310 and the first scale mark 111 is configured to display the depth of the groove 430.

[0063] The surface that contacts the bottom surface 431 of the groove 430 is defined as the detection surface.

[0064] To ensure the accuracy of readings from the edge mark 310, the main mark 210, the first scale mark 111, and the second scale mark 121, the main scale 100, the shape detection mechanism 200, and the shape inspection mechanism 300 must be calibrated before measurement.

[0065] Thus, a first positioning surface is formed on the main body 110. A second positioning surface 230 is formed on the shape inspection and dimensional measuring mechanism 200. A third positioning surface 340 is formed on the shape inspection mechanism 300.

[0066] A positioning surface 500 is formed when the first positioning surface 230, the second positioning surface 230, and the third positioning surface 340 are abutting each other, meaning that the first positioning surface 230, the second positioning surface 230, and the third positioning surface 340 are coplanar on the positioning surface 500. The end of the first sliding groove 114 is also located on this positioning surface 500. In this state, the total mark 210, the edge mark 310, and the zero mark of the first scale mark 111 are adjusted to be aligned, and the positions of the edge mark 310, the shape inspection strip 320, and the total mark 210 relative to the first scale mark 111 are locked by the first locking member 113, the second locking member 311, and the third locking member 211.

[0067] In some embodiments of this application, a first working portion 123 is formed on the first measuring jaw 120. A second working portion 222 is formed on the second measuring jaw 220.

[0068] The first working part 123 and the second working part 222 are configured to clamp at two target positions on the leaf spring 400 for measuring the chord length corresponding to the edge arc. Since the design purpose and sole function of the first working part 123 and the second working part 222 is to measure the chord length, their arc-shaped structure is different from the straight vernier caliper, which cannot measure the chord length, and facilitates the measurement of the distance between two points.

[0069] Specifically, the shape inspection mechanism 300 also includes a first calibration pin 330. A first sliding groove 114 is formed on the main body 110.

[0070] The side marker 310 and the shape inspection strip 320 are connected by the first calibration pin 330. The first calibration pin 330 is slidably connected in the first sliding groove 114.

[0071] The sliding of the first calibration pin 330 relative to the first sliding groove 114 can drive the edge mark 310 and the shape inspection strip 320 to move relative to the main scale body 110.

[0072] Anti-wear protrusions 1143 are formed extending from the upper and lower sides of the first sliding groove 114 to protect the facility.

[0073] Anti-wear protrusions 1143 are formed extending along the upper edge of the main body 110.

[0074] A first calibration adjustment groove 331 is provided on the first calibration pin 330 along the length direction of the main scale 100, and a plurality of first adjustment connection holes 312 are provided on the side marker 310.

[0075] When the edge marker 310 is adjusted to the target position relative to the first calibration pin 330, after several first locking members 113 pass through several first adjustment connecting holes 312 respectively, the end of the first locking member 113 is inserted into the first calibration adjustment groove 331 to lock the relative position of the edge marker 310 and the first calibration pin 330.

[0076] A second calibration adjustment groove 332 is provided on the first calibration pin 330 along the length of the main scale 100. Several second adjustment connection holes 321 are provided on the inspection strip 320.

[0077] With the shape inspection strip 320 adjusted to the target position relative to the first calibration pin 330, a number of second locking members 311 pass through a number of second adjustment connecting holes 321 respectively, and the ends of the second locking members 311 are inserted into the second calibration adjustment groove 332 to lock the relative position of the shape inspection strip 320 and the first calibration pin 330.

[0078] In some embodiments of this application, the first sliding groove 114 includes a first-direction through groove and a second-direction through groove. The first-direction through groove communicates with the second-direction through groove. The first-direction through groove extends through the main scale 100 along its thickness direction. The second-direction through groove extends along the width direction of the main scale 100. One end of the second-direction through groove communicates with the first-direction through groove. The other end of the second-direction through groove extends along the width direction of the main scale 100 to the lower side of the main scale 100.

[0079] The inspection strip 320 extends from the second direction through groove to the lower side of the main scale 100. The first calibration pin 330 is accommodated within the first direction through groove and the second direction through groove.

[0080] The side marker 310 extends from the first direction through the groove to the front side of the main scale 100.

[0081] In this state, by mounting the shape inspection and dimensional detection mechanism 200 on the outside of the shape inspection mechanism 300 and the main scale 100, the shape inspection mechanism 300 can be stably operated, and the stable operation of the shape inspection mechanism 300 can be protected.

[0082] The shape inspection and dimensional measurement mechanism 200 is provided with a second sliding groove 250, which is used to fit around the shape inspection mechanism 300 and the main ruler 100.

[0083] With the shape inspection mechanism 300 slidably connected to the first sliding groove 114, the main ruler body 110 and the shape inspection strip 320 are slidably connected to the second sliding groove 250 after assembly.

[0084] Specifically, the shape measurement mechanism 200 also includes a shape measurement body 240, and a second sliding groove 250 is formed on the shape measurement body 240 along the length direction of the main scale 100. A second measuring claw 220 is connected to the shape measurement body 240.

[0085] After the main scale body 110 is assembled with the shape inspection strip 320, it slides in the second sliding groove 250.

[0086] The main body 210 has several third adjustment connection holes 212. The main body 240 for external dimension inspection also has a third calibration adjustment groove 241. When the main body 210 is adjusted to the target position relative to the third calibration adjustment groove 241, several third locking members 211 pass through the multiple third adjustment connection holes 212 respectively. After passing through the third adjustment connection holes 212, the ends of the third locking members 211 are inserted into the third calibration adjustment groove 241, thereby locking the relative position between the main body 210 and the main body 240 for external dimension inspection.

[0087] When measuring the critical dimensions of leaf spring 400, the following leaf spring measurement methods can be used: S1: Adjust the relative positions of the main scale 100, the shape detection and dimensional mechanism 200, and the shape inspection mechanism 300. A first positioning surface is formed on the main scale body 110; a second positioning surface 230 is formed on the shape detection and dimensional mechanism 200; and a third positioning surface 340 is formed on the shape inspection mechanism 300. A positioning surface 500 is formed when the first positioning surface, the second positioning surface 230, and the third positioning surface 340 are in contact with each other, so that the zero mark of the first scale mark 111, the total scale mark 210, and the edge scale mark 310 are aligned. S2: Measure the thickness of the leaf spring 400: Adjust the position of the shape detection dimension mechanism 200 relative to the main scale 100 so that the first working surface 122 and the second working surface 221 are respectively clamped on the upper surface 440 and the lower surface 450 of the first end 410 of the leaf spring 400 in the thickness direction. By the relative position of the total scale 210 relative to the first scale 111, read the thickness value of the first end 410 of the leaf spring 400 on the first scale 111. Adjust the position of the shape detection dimension mechanism 200 relative to the main scale 100 so that the first working surface 122 and the second working surface 221 are respectively clamped on the upper surface 440 and the lower surface 450 of the second end 420 of the leaf spring 400 in the thickness direction. By the relative position of the total scale 210 relative to the first scale 111, the thickness value of the second end 420 of the leaf spring 400 is read on the first scale 111. S21: Flatness detection: By reading the relative position of the total mark 210 relative to the first scale mark 111, the thickness values ​​of the first end 410 and the second end 420 of the leaf spring 400 are obtained, and the flatness of the upper surface 440 of the leaf spring 400 relative to the lower surface 450 is determined by the thickness values ​​of the two ends.

[0088] S3: Measure the width of the leaf spring: Adjust the position of the shape detection mechanism 200 relative to the main scale 100 so that the first working surface 122 and the second working surface 221 are clamped at both ends of the leaf spring 400 in the width direction, and the upper surface 440 or the lower surface 450 of the leaf spring 400 abuts against the working line 322 of the shape inspection strip 320; read the width value of the leaf spring 400 on the first scale 111 by the relative position of the total scale 210 relative to the first scale 111. S31: Straightness detection: Adjust the position of the shape detection dimension mechanism 200 relative to the main ruler 100 so that the first working surface 122 and the second working surface 221 are clamped at both ends of the leaf spring 400 in the width direction, the upper surface 440 or the lower surface 450 of the leaf spring 400 abuts against the working line 322 of the shape inspection strip 320 and the first scale mark 111 is aligned with the zero scale line of the edge mark 310; observe whether there is a gap between the upper surface 440 or the lower surface 450 of the leaf spring 400 and the working line 322 of the shape inspection strip 320. The gap is used to determine the straightness of the upper surface 440 or the lower surface 450 of the leaf spring.

[0089] S4: Measure the side width of the leaf spring: Adjust the position of the shape detection dimension mechanism 200 relative to the main scale 100 so that the first working surface 122 and the second working surface 221 are respectively clamped at the first end 410 and the second end 420 in the width direction of the leaf spring 400. The upper surface 440 of the leaf spring 400 abuts against the working line 322 of the shape inspection bar 320. Move the shape inspection bar 320 so that the starting line 323 of the shape inspection bar 320 coincides with the first intersection point 461 at the first end 410 of the upper surface 440 of the leaf spring 400. Read the first side width 471 of the first end 410 of the upper surface 440 of the leaf spring 400 on the first scale 111 by the relative position of the edge mark 310 relative to the first scale mark 111. Rotate the leaf spring 400 laterally by 180 degrees and adjust the position of the shape detection dimension mechanism 200 relative to the main scale 100 so that the first working surface 122 and the second working surface 221 are respectively clamped at the second end 420 and the first end 410 in the width direction of the leaf spring 400. The upper surface 440 of the leaf spring 400 abuts against the working line 322 of the shape detection bar 320. Move the shape detection bar 320 so that the starting line 323 of the shape detection bar 320 coincides with the second intersection point 462 at the second end 420 of the upper surface 440 of the leaf spring 400. Read the second side width 472 of the second end 420 of the upper surface 440 of the leaf spring 400 on the first scale 111 by the relative position of the edge mark 310 relative to the first scale mark 111. The leaf spring 400 is rotated 180 degrees longitudinally and clamped between the first end 410 and the second end 420. The lower surface 450 of the leaf spring 400 abuts against the working line 322 of the forming strip 320. As described above, the third side width 474 and the fourth side width 475 are measured respectively. The intersection point corresponding to the third side width 474 is defined as the third intersection point 473, and the intersection point corresponding to the fourth side width 475 is defined as the fourth intersection point 476. In order to more clearly obtain the first, second, third, and fourth intersection points, the starting points of the two ends of the straight lines on the upper surface 440 and lower surface 450 of the leaf spring in the S31 straightness test are defined as the first intersection point 461, the second intersection point 462, the third intersection point 473, and the fourth intersection point 476.

[0090] S41: Leaf spring size detection: Subtract the first side width 471 measured in S4 from the width of the leaf spring 400 measured in S3, and then subtract the second side width 472 measured in S4 to obtain the width of the upper surface 440 of the leaf spring 400.

[0091] The width of the lower surface 450 of the leaf spring 400 is obtained by subtracting the third side width 474 measured in S4 from the width of the leaf spring 400 measured in S3, and then subtracting the fourth side width 475 measured in S4.

[0092] Simultaneously, if the width dimension of the leaf spring 400 measured in S3 meets the requirements, and the first side width 471 and the second side width 472 of the leaf spring measured in S4 also meet the requirements, then the width dimension of the upper surface 440 of the leaf spring 400 can be determined to meet the requirements. If the width dimension of the leaf spring 400 measured in S3 meets the requirements, and the third side width 474 and the fourth side width 475 of the leaf spring measured in S4 also meet the requirements, then the width dimension of the lower surface 450 can be determined to meet the requirements.

[0093] S5: Detection of the chord length corresponding to the end arc of the leaf spring 400: The first working part 123 of the first measuring jaw 120 of the main scale 100 and the second working part 222 of the second measuring jaw 220 of the shape detection dimension mechanism 200 are configured to clamp at the first intersection point 461 and the third intersection point 473 of the first end 410 in the thickness direction of the leaf spring 400 to measure the first chord length corresponding to the arc of the first end 410; The first working part 123 of the first measuring jaw 120 of the main scale and the second working part 222 of the second measuring jaw 220 of the shape detection dimension mechanism 200 are configured to clamp at the second intersection point 462 and the fourth intersection point 476 of the second end 420 in the thickness direction of the leaf spring 400 to measure the second chord length corresponding to the arc of the second end 420; The first and second chord length dimensions are read on the first scale 111 by the relative position of the total scale 210 relative to the first scale 111; Simultaneously, in S4, the first side width 471 and the third side width 474 of the first end 410 of the leaf spring 400 are checked to determine whether the first side width 471 and the third side width 474 are within the tolerance range of the theoretical values ​​of the first arc height and the third arc height of the first end 410 of the leaf spring 400, respectively. If they are within the above range, based on the thickness of the first end 410 of the leaf spring that meets the requirements measured in S2, it can be determined whether the first chord length meets the requirements. In S2, the second side width 472 and the fourth side width 475 of the second end 420 of the leaf spring 400 are checked to determine whether the second side width 472 and the fourth side width 475 are within the tolerance range of the theoretical values ​​of the second arc height and the fourth arc height of the second end 420 of the leaf spring 400, respectively. If they are within the above range, based on the thickness of the second end 420 of the leaf spring that meets the requirements measured in S2, it can be determined whether the second chord length meets the requirements.

[0094] To more clearly determine the heights of the first, second, third, and fourth arcs, the vertical distance from the vertex of the arc profile corresponding to the central angle 410 at the first end of the leaf spring 400 to both ends is defined as the height of the first arc and the height of the third arc. The vertical distance from the vertex of the arc profile corresponding to the central angle 420 at the second end of the leaf spring 400 to both ends is defined as the height of the second arc and the height of the fourth arc.

[0095] S6: Determine the end arc shape detection of the leaf spring: Adjust the position of the shape detection dimension mechanism 200 relative to the main scale 100 so that the first working surface 122 and the second working surface 221 are clamped at both ends of the leaf spring 400 in the width direction, and the upper surface 440 or the lower surface 450 of the leaf spring 400 abuts against the working line 322 of the shape inspection strip 320; the shape formed by the contact characteristics of the arc corresponding to different central angles of the first end 410 with the first working surface 122, according to the principle of central symmetry proportion, the center thickness is calibrated by the pointer 223, and the arc shape corresponding to the central angle is determined by the second scale mark 121.

[0096] Similarly, the arc shape corresponding to the 420° central angle at the second end can be determined.

[0097] In order to obtain the arc shape corresponding to the central symmetry ratio determination circle angle more clearly, a pointer 223 that can slide along the extension direction of the second scale 121 is provided on the second measuring claw 220, and the center thickness is calibrated by the pointer 223 as a reference.

[0098] Based on the theoretical thickness of the leaf spring 400, the value corresponding to the center value is calculated, and the pointer 223 is adjusted to indicate the above value on the second scale 121. In this way, with the center thickness calibrated by the pointer 223 as the reference, and considering the characteristics of the arcs with different central angles contacting the first working surface 122, according to the principle of central symmetry, by comparing and judging the allowable tolerance value displayed on the second scale 121, it can be determined whether the end arc shape of the leaf spring 400 meets the requirements.

[0099] S7: Determination of End Central Angle: The central angle is determined by drawing an arc using three points. In S2, the thickness of the first end 410 is constant. In S4 and S5, the relationship between the first side width 471, the third side width 474, the first arc height, and the third arc height of the first end 410 is used to determine the first intersection point 461 and the third intersection point 473 as the two endpoints of the arc. In S6, the shape formed by the contact characteristics of the arc with the first working surface 122 corresponding to different central angles of the first end 410 is the third point. Finally, the central angle of the first end 410 is determined by using the chord length data in S5 and the arc height determined by the three points. The same operation can be used to determine the central angle of the second end 420.

[0100] S8: Measure the position of the groove 430 in the leaf spring 400: Adjust the position of the shape detection dimension mechanism 200 relative to the main scale 100 so that the first working surface 122 and the second working surface 221 are respectively clamped on the first end 410 and the second end 420 in the width direction of the leaf spring 400, the upper surface 440 of the leaf spring 400 abuts against the working line 322 of the shape inspection bar 320, move the starting line 323 of the shape inspection bar 320 to the position of the first end 410 of the leaf spring 400 to the outer edge of the groove 430, and read the position data of the first end 410 of the leaf spring 400 to the groove 430 on the first scale 111 by the relative position of the edge mark 310 to the first scale mark 111. Rotate the leaf spring 400 laterally by 180 degrees and adjust the position of the shape detection dimension mechanism 200 relative to the main scale 100 so that the first working surface 122 and the second working surface 221 are respectively clamped on the second end 420 and the first end 410 in the width direction of the leaf spring 400. The upper surface 440 of the leaf spring 400 abuts against the working line 322 of the shape detection bar 320. Move the starting line 323 of the shape detection bar 320 to the position of the second end 420 of the leaf spring 400 to the outer edge of the groove 430. Read the position data of the second end 420 of the leaf spring 400 to the groove 430 on the first scale 111 by the relative position of the edge mark 310 to the first scale 111. Finally, the distance from the first end 410 and the second end 420 to the two ends of the groove 430 is used to locate and detect the groove 430 of the leaf spring 400. S9: Measuring the depth of the groove 430 in the leaf spring 400: With the third working surface 112 at the end of the main scale 100 perpendicular to the upper surface 440 of the leaf spring 400, the shape inspection strip 320 is moved until its end measuring surface 324 abuts against the bottom surface 431 of the groove 430 of the leaf spring 400, and the relative position of the edge mark 310 and the first scale mark 111 is configured to realize the depth detection of the groove 430.

[0101] Whenever possible, the various aspects and features described and shown in the specification can be applied individually, and these individual aspects can serve as the subject of a divisional application.

[0102] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. A leaf spring detector, characterized in that, include: The main scale includes a main scale body and a first measuring jaw connected thereto. A first scale mark is formed on the main scale body along the length direction of the main scale. A second scale mark is formed on the first measuring jaw along the width direction of the main scale. A first working surface is formed on the first measuring jaw along the width direction of the main scale. A third working surface is formed at the end of the main scale body along the length direction. A shape detection and dimensional mechanism is slidably connected to the main scale body. The shape detection and dimensional mechanism can move relative to the main scale body along the length direction of the main scale. The shape detection and dimensional mechanism includes a main scale and a second measuring claw connected thereto. A second working surface is formed on the second measuring claw along the width direction of the main scale. A shape inspection mechanism is slidably connected to the main scale body. The shape inspection mechanism can move relative to the main scale body along the length direction of the main scale. The shape inspection mechanism includes a side mark and a shape inspection strip connected to the side mark. The shape inspection strip extends along the length direction of the main scale and is used to abut and position the leaf spring. The side marker drives the shape inspection strip to move relative to the main scale body to the target position, and the relative position of the side marker and the first scale mark is configured to display the size of the target position; With the first working surface and the second working surface clamped at the target position of the leaf spring, the relative position of the total mark and the first scale mark is configured to display the size of the target position in the width direction of the leaf spring, and the second scale mark is configured to display the direction of the target position in the thickness direction of the leaf spring; With the third working surface perpendicularly abutting against the upper surface of the leaf spring, the shape inspection bar moves relative to the main scale body until the end measuring surface of the shape inspection bar abuts against the bottom surface of the groove of the main scale, and the relative position of the edge mark and the first scale mark is configured to display the depth of the groove.

2. The leaf spring detector according to claim 1, characterized in that, A first working portion is formed on the first measuring claw; A second working portion is formed on the second measuring jaw; The first working part and the second working part are configured to clamp at two target positions of the leaf spring for measuring the distance between the two target positions.

3. The leaf spring detector according to claim 1, characterized in that, The shape inspection mechanism also includes a first calibration pin; A first sliding groove is formed on the main scale body; The edge marker and the shape inspection strip are connected by the first calibration pin, which is slidably connected in the first sliding groove.

4. The leaf spring detector according to claim 3, characterized in that, The first calibration pin has a first calibration adjustment groove along the length of the main scale, and the side marker has a plurality of first adjustment connection holes; When the edge marker is adjusted to the target position relative to the first calibration pin, a plurality of first locking members pass through a plurality of first adjustment connecting holes, and the ends of the first locking members are inserted into the first calibration adjustment groove to lock the relative position of the edge marker and the first calibration pin.

5. The leaf spring detector according to claim 3, characterized in that, The first calibration pin is provided with a second calibration adjustment groove along the length of the main scale, and the shape inspection strip is provided with a plurality of second adjustment connection holes; When the test strip is adjusted to the target position relative to the first calibration pin, a plurality of second locking members pass through a plurality of second adjustment connecting holes, and the ends of the second locking members are inserted into the second calibration adjustment groove to lock the relative position of the test strip and the first calibration pin.

6. The leaf spring detector according to claim 3, characterized in that, A second sliding groove is formed on the shape detection and dimensional mechanism; With the shape inspection mechanism slidably connected to the first sliding groove, the main ruler body and the shape inspection strip are slidably connected to the second sliding groove.

7. The leaf spring detector according to claim 6, characterized in that, The first sliding groove includes a first direction through groove and a second direction through groove. The first direction through groove penetrates the main scale along the thickness direction of the main scale, and the second direction through groove penetrates the main scale from the first direction through groove along the width direction of the main scale.

8. The leaf spring detector according to claim 7, characterized in that, The shape inspection strip extends from the through groove in the second direction to the lower side of the main scale; The first calibration pin is accommodated within the first direction through groove and the second direction through groove; The side marker extends from the through groove in the first direction to the front side of the main scale.

9. The leaf spring detector according to claim 8, characterized in that, The shape detection and dimensional inspection mechanism further includes a shape detection and dimensional inspection body, and the second measuring claw is connected to the shape detection and dimensional inspection body; The main body is provided with several third adjustment connection holes; The second sliding groove is formed on the main body for measuring the external dimensions along the length direction of the main scale. The main body for measuring the external dimensions has a third calibration adjustment groove along the length of the main ruler. When the overall calibration is adjusted to the target position relative to the third calibration adjustment slot, a plurality of third locking members pass through a plurality of the third adjustment connection holes, and the ends of the third locking members are locked to the position of the third calibration adjustment slot.

10. The leaf spring detector according to claim 1, characterized in that, A first positioning surface is formed on the main body of the main ruler; A second positioning surface is formed on the shape detection and dimensional mechanism; A third positioning surface is formed on the shape inspection mechanism; With the first positioning surface, the second positioning surface, and the third positioning surface abutting against each other, adjust the zero mark of the main mark, the side mark, and the first scale mark to align with each other, and the first locking member, the second locking member, and the third locking member lock the position of the side mark, the shape inspection strip, and the main mark.

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