Gap measuring mechanism and gap measuring tool

Abstract

The invention discloses a gap measuring mechanism and a gap measuring tool, the gap measuring mechanism comprises a vertical rail, an upper block body, a lower block body, a first elastic piece, a displacement measuring piece and a detection elastic piece, the lower block body is arranged on the vertical rail, the upper block body is slidably arranged on the vertical rail, and the detection elastic piece is gt; the tip of the detection elastic piece deviates from the upper block body and the lower block body, the upper end of the detection elastic piece is connected with the upper block body, the lower end of the detection elastic piece is connected with the lower block body, the first elastic piece is arranged between the upper block body and the lower block body, and the displacement measuring piece is used for measuring the displacement of the upper block body relative to the lower block body in the vertical direction. The tip end of the detection elastic piece is used for being squeezed into a gap to be measured, and drives the upper block body to overcome the elastic force of the first elastic piece and move downwards relative to the lower block body under the extrusion of the upper and lower side wall surfaces of the gap to be measured, so that the width value of the corresponding position of the gap to be measured is measured by the displacement measurement piece. The device is simple in structure and high in detection precision.

Description

Technical Field

[0001] This invention belongs to the field of gap measurement technology, and particularly relates to a gap measuring mechanism and gap measuring fixture. Background Technology

[0002] For dry dual-clutch transmissions, there are two sets of clutches spaced apart along the axis (the two sets of clutches control odd-numbered gears and even-numbered gears respectively). Each set of clutches has an annular clutch free clearance. If the clutch free clearance is too large, the pressure plate will not be able to apply enough pressure to the driven plate. When transmitting torque, the friction plates and the pressure plate will easily slip. The car will exhibit weak acceleration, and the engine speed will increase but the vehicle speed will increase slowly. In severe cases, the clutch will overheat and produce a burning smell. There will be jerking or abnormal noise during gear shifting, which will shorten the clutch's service life. If the clearance is too small, the pressure plate will always maintain a certain pressure on the driven plate, which will prevent the clutch from fully disengaging. During gear shifting, the gears will not be able to cut off power in time, resulting in difficulty shifting and abnormal noise during gear shifting. The continuous pressure will cause diaphragm spring fatigue, loss of elasticity, or warping and deformation of the driven plate, which will lead to more serious mechanical failures. This will cause the vehicle to experience power termination or abnormal shifting logic, and damage the transmission components. Therefore, it is necessary to measure the width of the free clearance of the two clutches of a dry dual-clutch transmission before it leaves the factory.

[0003] Currently, the width of the clutch free clearance is mostly measured manually using tools such as feeler gauges or feeler gauges (the measuring tools are inserted into the corresponding clutch free clearance through the heat dissipation windows on the two clutch housings). However, the measurement accuracy is limited and is greatly affected by the operator's skill level and working conditions. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems, one of the objectives of the present invention is to provide a gap measuring mechanism that has a simple structure, high accuracy in measuring the gap to be measured, and is convenient to measure.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: A gap measuring mechanism includes a vertical rail, an upper block, a lower block, a first elastic element, a displacement measuring element, and a detection spring. The vertical rail is vertically arranged, the lower block is disposed on the vertical rail, and the upper block is vertically slidably disposed on the vertical rail and located above the lower block. The detection spring is ">" shaped, with its tip facing away from the upper and lower blocks. The upper end of the detection spring is connected to the upper block, and the lower end of the detection spring is connected to the lower block. The first elastic element... An elastic element is disposed between the upper block and the lower block. The elastic force of the first elastic element drives the upper block to move upward away from the lower block. The displacement measuring element measures the vertical displacement of the upper block relative to the lower block. The tip of the detection spring is inserted into the gap to be measured and, under the pressure of the upper and lower side walls of the gap to be measured, drives the upper block to overcome the elastic force of the first elastic element and move downward relative to the lower block, so that the width value of the corresponding part of the gap to be measured can be measured by the displacement measuring element.

[0006] The beneficial effects of the technical solution of the present invention are as follows: by setting a first elastic element between the lower block and the upper block, the upper block tends to move upward relative to the lower block, thereby increasing the distance between the two ends of the detection spring. When measuring the gap to be measured, after the detection spring is inserted into the gap to be measured, the walls on the upper and lower sides of the gap to be measured will squeeze the two ends of the detection spring and drive the upper block to move downward relative to the lower block. At this time, the width value of the gap to be measured can be calculated by measuring the distance between the upper block and the lower block through the displacement measuring element.

[0007] The present invention can be further improved in the following ways based on the above technical solution: Furthermore, both the upper block and the lower block are located on the front side of the vertical rail, and the lower front end of the upper block is provided with an upper connecting ear, and the upper front end of the lower block is provided with a lower connecting ear. The upper connecting ear and the lower connecting ear are parallel to each other. The tip of the detection spring points forward, the upper end of the detection spring is connected to the front end of the upper connecting ear, and the lower end of the detection spring is connected to the front end of the lower connecting ear.

[0008] The beneficial effect of the above-mentioned further technical solution is that by setting the upper connecting ear and the lower connecting ear, the two ends of the detection spring can be far away from the upper block and the lower block, so that there is sufficient clearance above and below the detection spring, which is more conducive to the detection spring extending into the gap to be measured.

[0009] Furthermore, the displacement measuring element is disposed on the lower block or the upper block, and the displacement measuring element is a distance measuring probe or a displacement sensor.

[0010] The beneficial effect of the above-mentioned further technical solution is that it makes the structure of the entire gap measuring mechanism more compact.

[0011] Furthermore, the lower block is vertically slidable on the vertical rail.

[0012] The beneficial effect of the above-mentioned further technical solution is that the lower block can be adjusted in height relative to the vertical rail, thereby allowing the height of the detection spring to be adjusted accordingly to meet the measurement of the gap to be measured at different heights.

[0013] Furthermore, it also includes a lifting drive component, which is disposed on the vertical rail and the driving end of the lifting drive component is connected to the lower block. The lifting drive component is used to drive the lower block to move the upper block vertically on the vertical rail, so as to adjust the vertical height of the detection spring to align with the gap to be measured.

[0014] The beneficial effect of the above-mentioned further technical solution is that the height of the lower block on the vertical rail can be adjusted by the lifting drive component so that the detection spring is aligned with the gap to be measured.

[0015] Furthermore, the lower block is movably connected to the drive end of the lifting drive, and a movable connection is provided with a margin for the lower block to move upward relative to the drive end of the lifting drive.

[0016] The beneficial effect of the above-mentioned further technical solution is that when the detection spring is aligned with the gap to be measured, after the detection spring is squeezed into the gap to be measured, the two ends of the detection spring can be squeezed to be close to each other, and the upper block and the lower block can move up and down synchronously to be close to each other so that the distance can be measured by the displacement measuring element.

[0017] The second objective of this invention is to provide a gap measuring fixture with a simple structure that can conveniently measure the gap on the workpiece to be measured.

[0018] To achieve the above objectives, the technical solution of the present invention is as follows: a gap measuring fixture, comprising a support base and a gap measuring mechanism as described above, wherein the vertical rail is slidably mounted on the support base, the support base has a detection station for placing the workpiece to be measured, and the tip of the detection spring faces the detection station, and the vertical rail can slide to be close to or away from the detection station.

[0019] The beneficial effects of the technical solution of the present invention are as follows: the object to be tested can be placed at the testing station on the support base, and the gap to be measured can be oriented toward the gap measuring mechanism. At this time, the vertical rail can be slid to allow the testing spring to be squeezed into the gap to be measured, so as to measure the width value of the gap to be measured. After the measurement is completed, the vertical rail can be slid back to allow the testing spring to be withdrawn from the gap to be measured.

[0020] The present invention can be further improved in the following ways based on the above technical solution: Furthermore, it also includes a linear drive unit, which is mounted on the support base, and the vertical rail is mounted on the drive end of the linear drive unit. The linear drive unit drives the gap measuring mechanism to move closer to or further away from the detection station.

[0021] The beneficial effect of the above-mentioned further technical solution is that the vertical rail can be driven by a linear drive to move until the detection spring is squeezed into the detection area or pulled out from the gap to be measured.

[0022] Furthermore, it also includes a rotary table disposed on the support base, the rotary table constituting the testing station, the test piece being placed on the rotary table, and the rotary table being used to drive the test piece to rotate.

[0023] The beneficial effect of the above-mentioned further technical solution is that the test piece can be placed on a rotary table to rotate the test piece until its gap to be measured is aligned with the gap measuring mechanism, or the gap to be measured on the test piece can be measured at multiple points from the ring upward.

[0024] Furthermore, it also includes a sensing positioning component, which is disposed on the support base or the upper end of the vertical rail, with its identification part facing the rotary table. The sensing positioning component is used to identify whether the gap to be measured of the test piece on the rotary table has been rotated to be aligned with the gap measuring mechanism. If aligned, the rotary table stops, and the gap measuring mechanism measures the gap to be measured of the test piece.

[0025] The beneficial effect of the above-mentioned further technical solutions is that they make the entire gap measurement fixture more automated and intelligent. Attached Figure Description

[0026] Figure 1 This is a side view of the gap measuring mechanism described in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the distribution of the mounting bracket, upper block, and lower block described in Embodiment 1 of the present invention from a frontal view. Figure 3 This is a schematic diagram of the detection spring being inserted into the gap to be measured as described in Embodiment 1 of the present invention; Figure 4This is a schematic diagram of the upper connecting ear and the lower connecting ear being fitted together in Embodiment 1 of the present invention; Figure 5 This is a side view of the gap measuring mechanism described in Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the distribution of the connecting block, mounting bracket and vertical rail described in Embodiment 2 of the present invention from a top view angle; Figure 7 This is one of the side views of the gap measuring mechanism described in Embodiment 3 of the present invention; Figure 8 for Figure 7 Enlarged view of point A in the middle; Figure 9 This is a second side view of the gap measuring mechanism described in Embodiment 3 of the present invention; Figure 10 This is a side view of the gap measuring fixture described in Embodiment 4 of the present invention; Figure 11 This is a side view of the gap measuring fixture described in Embodiment 5 of the present invention; Figure 12 This is a cross-sectional view of the gap measuring fixture described in Embodiment 6 of the present invention; Figure 13 This is a cross-sectional view of the dry dual clutch described in Embodiment 6 of the present invention assembled on the rotary table; Figure 14 This is a schematic diagram of one side of a dry dual-clutch transmission.

[0027] In the diagram: 1. Gap measuring mechanism; 11. Vertical rail; 111. Base plate; 12. Upper block; 121. Upper connecting ear; 13. Lower block; 131. Lower connecting ear; 132. Mounting bracket; 1321. Mating groove; 133. First mounting groove; 14. First elastic element; 15. Displacement measuring element; 16. Detection spring; 17. Lifting drive element; 171. Connecting block; 1711. Second mounting groove; 18. Second elastic element. 1. Component; 2. Support base; 3. Linear drive component; 4. Rotary table; 41. Rotating component; 411. Tray; 412. Drive motor; 413. Spindle; 414. Surface bearing; 42. Center positioning shaft; 421. Threaded hole; 43. Pressure plate; 431. Through hole; 44. Clamping bolt; 5. Visual positioning component; 6. Controller; 7. Dry dual clutch; 71. Clutch free clearance; 72. Heat dissipation window; 73. Shaft hole. Detailed Implementation

[0028] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0030] It is understood that spatial relation terms such as “below,” “under,” “below,” “below,” “above,” “above,” etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as “below,” “below,” or “below” will be oriented “above” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0031] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0032] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0033] Example 1 like Figure 1As shown, this embodiment provides a gap measuring mechanism 1, including a vertical rail 11, an upper block 12, a lower block 13, a first elastic element 14, a displacement measuring element 15, and a detection spring 16. The vertical rail 11 is vertically arranged, the lower block 13 is fixedly arranged on the vertical rail 11, the upper block 12 is vertically slidably arranged on the vertical rail 11 and located above the lower block 13, the detection spring 16 is ">" shaped, its tip is away from the upper block 12 and the lower block 13, and the upper end of the detection spring 16 is connected to the upper block 12, the lower end of the detection spring 16 is connected to the lower block 13, and the first elastic element 14, the displacement measuring element 15, and the first elastic element 16 are all present. An elastic element 14 is disposed between the upper block 12 and the lower block 13. The elastic force of the first elastic element 14 is used to drive the upper block 12 to move upward away from the lower block 13. The displacement measuring element 15 is used to measure the vertical displacement of the upper block 12 relative to the lower block 13. The tip of the detection spring 16 is used to be squeezed into the gap to be measured, and under the pressure of the upper and lower side walls of the gap to be measured, it drives the upper block 12 to overcome the elastic force of the first elastic element 14 and move downward relative to the lower block 13, so that the width value of the corresponding part of the gap to be measured can be measured by the displacement measuring element 15. By setting a first elastic element 14 between the lower block 13 and the upper block 12, the upper block 12 tends to move upward relative to the lower block 13, thereby increasing the distance between the two ends of the detection spring 16. When measuring the gap to be measured, after the detection spring 16 is inserted into the gap to be measured, the upper and lower walls of the gap to be measured will squeeze the two ends of the detection spring 16 and drive the upper block 12 to move downward relative to the lower block 13. At this time, the width value of the gap to be measured can be calculated by measuring the distance between the upper block 12 and the lower block 13 through the displacement measuring element 15.

[0034] The detection spring 16 described in this embodiment can be a tough steel sheet or a copper alloy sheet, but it is not limited to these.

[0035] The gap measuring mechanism 1 provided in this embodiment is suitable for measuring horizontally distributed gaps, that is, the walls on both sides of the gap to be measured are spaced apart in the vertical direction.

[0036] The gap measuring mechanism 1 provided in this embodiment is based on the insertion of the two ends of the detection spring 16 into the opening of the gap to be measured, so that the detection spring 16 is squeezed by the upper and lower side walls of the gap to be measured. At this time, the distance between the two ends of the detection spring 16 represents the width value at the opening of the gap to be measured. However, it is difficult to measure the distance between the two ends of the detection spring 16 in real time. Therefore, this embodiment cleverly transforms the measurement of the distance between the two ends of the detection spring 16 into the measurement of the real-time distance between the upper block 12 and the lower block 13 (because the distance between the upper block 12 and the lower block 13 is linearly related to the distance between the two ends of the detection spring 16). The measurement of the distance between the upper block 12 and the lower block 13 can be conveniently achieved by the displacement measuring component 15.

[0037] In this embodiment, the distance between the two ends of the detection spring 16 refers to the distance between the inner sides of the two ends of the detection spring 16 (excluding the wall thickness of the detection spring 16). However, in actual measurement, the wall thickness of the detection spring 16 is not negligible, and the wall thickness of the detection spring 16 is defined as h.

[0038] In this embodiment, when the upper block 12 moves to its limit position relative to the lower block 13 (i.e., the minimum adjustable distance between them), the distance between the two ends of the detection spring 16 is L. min When the upper block 12 is supported above the lower block 13 by the elastic force of the first elastic element 14 without any external pressure, the distance between the two ends of the detection spring 16 is L. max (where L) min and L max (This can be obtained in advance through measurement), correspondingly, the range of the gap measuring mechanism 1 provided in this embodiment is between L... min +2h and L max Between +2h, when the width of the gap to be measured is less than L min If the gap measurement mechanism 1 cannot perform a measurement when the width of the gap to be measured is greater than L, then the gap measurement mechanism 1 cannot perform a measurement. max +2h, then during measurement, the upper block 12 needs to be manually pulled upward relative to the lower block 13 so that the two ends of the detection spring 16 are respectively in contact with the upper and lower walls of the gap to be measured (this is only occasionally applicable when the width of the gap to be measured is slightly greater than L). max +2h, if the width of the gap to be measured is much greater than L max +2h, at this time, manually pulling the upper block 12 upward relative to the lower block 13 may cause damage to the gap measuring mechanism 1 or reduce its accuracy.

[0039] When measuring the gap within its range, the gap measuring mechanism 1 provided in this embodiment first moves the upper block 12 downward relative to the lower block 13 to its limit position. At this time, the reading of the displacement measuring element 15 is zeroed. Then, the detection spring 16 is inserted into the gap to be measured. At this time, the measured value of the displacement measuring element 15 is L. Then, the width of the gap opening to be measured is d = L + L. min +2h.

[0040] like Figure 1 As shown, in this embodiment, the first elastic element 14 can be a spring, or a "V"-shaped or "C"-shaped spring sheet. Preferably, the first elastic element 14 is a spring. More preferably, the upper end of the lower block 13 is recessed with a first mounting groove 133, and the lower end of the first elastic element 14 is inserted into the first mounting groove 133. This limits the first elastic element 14, preventing it from shifting and keeping it in an upright position. Simultaneously, when the upper block 12 moves downward relative to the lower block 13, the first elastic element 14 is compressed, and the first mounting groove 133 can accommodate the first elastic element 14. This results in a smaller gap between the upper block 12 and the lower block 13 when the upper block 12 moves to its limit position relative to the lower block 13, or even allows the upper block 12 to fit snugly against the lower block 13. This allows L... min The value is smaller, so that the gap measuring mechanism 1 can meet the measurement needs of narrower gaps.

[0041] like Figure 1 As shown, in this embodiment, both the upper block 12 and the lower block 13 are located on the front side of the vertical rail 11. The lower front end of the upper block 12 has an upper connecting lug 121 protruding forward, and the upper front end of the lower block 13 has a lower connecting lug 131 protruding forward. The upper connecting lug 121 and the lower connecting lug 131 are parallel to each other. The tip of the detection spring 16 faces forward, the upper end of the detection spring 16 is connected to the front end of the upper connecting lug 121, and the lower end of the detection spring 16 is connected to the front end of the lower connecting lug 131. By setting the upper connecting lug 121 and the lower connecting lug 131, the two ends of the detection spring 16 can be moved away from the upper block 12 and the lower block 13, so that there is sufficient clearance above and below the detection spring 16, which is more conducive to the detection spring 16 extending into the gap to be measured.

[0042] See details Figure 1Specifically, in this embodiment, the upper connecting ear 121 can be L-shaped. The upper end of the upper connecting ear 121 is connected to the lower front end of the upper block 12 or integrally formed. The upper end of the detection spring 16 is connected to the front end of the lower part of the upper connecting ear 121. The upper connecting ear 121 needs to satisfy the condition that when the upper block 12 moves downward relative to the lower block 13 to its extreme position, the lower part of the upper connecting ear 121 is exactly in contact with the lower connecting ear 131. This allows the L-shaped connection to be formed. min The value decreases further; Preferred, such as Figure 4 As shown, the inner surface of the upper end of the detection spring 16 is flush with the lower surface of the upper connecting ear 121, and the inner surface of the lower end of the detection spring 16 is flush with the upper surface of the lower connecting ear 131. This ensures that when the upper block 12 moves to its limit position relative to the lower block 13, the two ends of the detection spring 16 are in contact with each other. At this time, L min =0, meaning the width of the gap to be measured is directly d=L+2h.

[0043] In this embodiment, the thickness of the detection spring can be 0.5 mm, and the narrowest gap width that the gap measuring mechanism 1 can detect is 1 mm.

[0044] Further preferred, such as Figure 3 As shown, the upper end of the detection spring 16 is connected to the upper connecting ear 121 above the connection point, and the lower end of the detection spring 16 is connected to the lower connecting ear 131 below the connection point. Both of these have a step (i.e., the wall thickness of the detection spring 16 is less than the thickness of the lower connecting ear 131 and also less than the thickness of the lower part of the upper connecting ear 121). This ensures that after the detection spring 16 is completely inserted into the gap to be measured, the two steps will cause the upper connecting ear 121 and the lower connecting ear 131 to just abut against the opening of the gap to be measured, thus ensuring that the detection spring 16 is completely inserted into the gap to be measured.

[0045] Figure 3 The dashed line represents the gap to be measured.

[0046] like Figure 1 As shown, in this embodiment, the displacement measuring element 15 is disposed on the lower block 13 or the upper block 12. The displacement measuring element 15 is a ranging probe (specifically a non-contact ranging probe, such as a laser ranging probe or an infrared ranging probe) or a displacement sensor (specifically a contact displacement sensor, such as a grating ruler, a magnetic grating ruler, etc.). This makes the structure of the entire gap measuring mechanism 1 more compact.

[0047] like Figure 1 and Figure 2As shown, the gap measuring mechanism 1 in this embodiment further includes a mounting bracket 132, which is n-shaped and vertically positioned above the lower block 13. The upper block 12 is located within the groove of the mounting bracket 132. The lower ends of both sides of the mounting bracket 132 are fixedly connected to the sides of the lower block 13. The displacement measuring element 15 is mounted on the upper end of the mounting bracket 132 and is used to measure the vertical displacement of the upper block 12 relative to the mounting bracket 132. By suspending the displacement measuring element 15 above the upper block 12 via the mounting bracket 132 and fixing it relative to the lower block 13, the installation space for the displacement measuring element 15 is made wider, while also limiting the upward displacement of the upper block 12 relative to the lower block 13.

[0048] Preferred, such as Figure 1 and Figure 2 As shown, in this embodiment, the displacement measuring component 15 can be a telescopic displacement sensor, which is vertically embedded in the middle of the upper end of the mounting bracket 132, with its telescopic end facing downwards, and always abutting or connected to the upper end of the upper block 12. In this embodiment, the mounting bracket 132 and the displacement measuring component 15 are fixed relative to the lower block 13. When the upper block 12 moves up and down relative to the lower block 13, the displacement measuring component 15 will measure the vertical displacement of the upper block 12 relative to the lower block 13 in real time. At the same time, the telescopic end of the displacement measuring component 15 can also apply a certain downward pressure to the upper block 12, which can prevent the upper block 12 from sliding in the vertical direction and improve its stability.

[0049] The sliding connection between the upper block 12 and the vertical rail 11 described in this embodiment is existing technology in the field and will not be elaborated here.

[0050] Example 2 Same as Example 1, except that, as Figure 5 As shown, in this embodiment, the lower block 13 is vertically slidable on the vertical rail 11. This allows the lower block 13 to be adjusted in height relative to the vertical rail 11, thereby adjusting the height of the detection spring 16 to accommodate measurements of gaps at different heights.

[0051] Preferred, such as Figure 5As shown, the gap measuring mechanism 1 provided in this embodiment further includes a lifting drive 17. The lifting drive 17 is disposed on the vertical rail 11, and the driving end of the lifting drive 17 is connected to the lower block 13. The lifting drive 17 is used to drive the lower block 13 to move the upper block 12 vertically on the vertical rail 11, so as to adjust the vertical height of the detection spring 16 to align with the gap to be measured. In this way, the height of the lower block 13 on the vertical rail 11 can be adjusted by the lifting drive 17 so that the detection spring 16 is aligned with the gap to be measured.

[0052] The lifting drive component 17 described in this embodiment can be a telescopic cylinder (telescopic electric cylinder or telescopic pneumatic cylinder) or a lead screw linear drive component, etc. The lifting drive component 17 can be installed on the rear side of the vertical rail 11. When the lifting drive component 17 is a telescopic cylinder, its telescopic end is set downward. When the lifting drive component 17 retracts, it drives the lower block 13 to move upward along the vertical rail 11, and when the lifting drive component 17 extends, it drives the lower block 13 to move downward along the vertical rail 11. When the lifting drive component 17 is a lead screw linear drive component, the lifting drive component is set behind or on the rear side of the vertical rail 11. It can be set back to the rear side of the vertical rail 11, or it can be set together with the vertical rail 11 on a base plate 111 (in this embodiment, the lifting drive component 17 and the vertical rail 11 can be regarded as a whole).

[0053] like Figure 5 and Figure 6 As shown, the lifting drive component 17 is connected to the lower block 13 via a U-shaped connecting block 171. The slot of the connecting block 171 faces forward, and the vertical rail 11 is located in the slot of the connecting block 171. The rear end of the connecting block 171 is connected to the driving end of the lifting drive component 17 (fixed connection). The two ends of the slot of the connecting block 171 are connected to the two sides of the lower block 13 or the mounting bracket 132 (can be fixed connection).

[0054] The sliding connection between the lower block 13 and the vertical rail 11 described in this embodiment is existing technology in the field and will not be elaborated here.

[0055] Example 3 Same as Example 2, except that, as Figures 7-9As shown, in this embodiment, the lower block 13 is movably connected to the driving end of the lifting drive member 17, and a movable allowance is reserved at the connection point for the lower block 13 to move upward relative to the driving end of the lifting drive member 17. This allows the detection spring 16 to align with the gap to be measured. After the detection spring 16 is inserted into the gap, its two ends are pressed closer together, simultaneously driving the upper block 12 and the lower block 13 to move synchronously closer together (the upper block 12 moves downward, and the lower block 13 moves upward) so that the distance can be measured by the displacement measuring member 15.

[0056] Since the upper block 12 can move up and down relative to the lower block 13, the upper block 12 can move slightly downward relative to the lower block 13 under the action of the detection spring 16. For the lower block 13 to move slightly upward under the action of the detection spring 16, the lower block 13 can only be moved by connecting the driving end of the lifting drive component 17.

[0057] like Figure 7 and 8 As shown, specifically, in this embodiment, the connecting block 171 is movably connected to the mounting bracket 132 (equivalent to the lifting drive component 17 being movably connected to the lower block 13). In this embodiment, the lower rear ends of both sides of the mounting bracket 132 are provided with recessed mating grooves 1321. The two ends of the groove opening of the connecting block 171 are respectively inserted into the mating grooves 1321 on the corresponding sides. The vertical width of the mating groove 1321 is slightly larger than the vertical width of the end of the groove opening of the connecting block 171 (to provide lower... With the allowable upward movement of block 13 relative to connecting block 171, under the action of gravity, the mounting bracket 132 will rest on the connecting block 171. However, when the detection spring 16 aligns with the gap to be detected and is squeezed in (at this time, the lifting drive 17 stops running), the lower end of the detection spring will drive the lower block 13 and the mounting bracket 132 to move slightly upward as a whole (the maximum upward movement of the lower block 13 relative to the connecting block 171 is when the end of the connecting block 171 abuts against the lower end of the corresponding mating groove 1321).

[0058] like Figure 7 and 8 As shown, in order to improve the stability of the movable connection between the connecting block 171 and the mounting bracket 132, at least one second elastic element 18 can be provided in each of the mating grooves 1321 in this embodiment. The second elastic element 18 is disposed between the lower end of the mating groove 1321 and the lower end of the corresponding end of the connecting block 171. Multiple second elastic elements 18 are used to drive the lower block 13 and the mounting bracket 132 to move downward relative to the connecting block 171 (so that the lower block 13 will not jump flexibly relative to the connecting block 171).

[0059] like Figure 8 As shown, in this embodiment, the second elastic element 18 can be a spring, or a "V"-shaped or "C"-shaped spring sheet. Preferably, the second elastic element 18 is a spring. More preferably, the lower end of the corresponding end of the groove of the connecting block 171 is recessed with a second mounting groove 1711. The upper end of the second elastic element 18 is inserted into the corresponding second mounting groove 1711, and the lower end of the second elastic element 18 rests on the lower end of the mating groove 1321.

[0060] like Figure 9 As shown, the lower block 13 or the mounting bracket 132 can also be placed directly on both ends of the slot of the connecting block 171 to achieve a movable connection between the lower block 13 and the driving end of the lifting drive 17. At this time, the lower block 13 and the mounting bracket 132 will be supported on the connecting block 171 under the action of gravity and will move synchronously with the connecting block 171. However, when the detection spring 16 is squeezed into the gap to be measured, the detection spring 16 can drive the lower block 13 and the mounting bracket 132 to move slightly upward and separate from the connecting block 171. When the detection spring 16 exits the gap to be measured, the lower block 13 and the mounting bracket 132 can fall back onto the connecting block 171 under the action of gravity.

[0061] Example 4 like Figure 10 As shown, this embodiment provides a gap measuring fixture, including a support base 2 and a gap measuring mechanism 1 as described in Embodiments 1, 2, or 3. A vertical rail 11 is slidably mounted on the support base 2. The support base 2 has a detection station for placing the workpiece to be measured (the detection station is located directly in front of the gap measuring mechanism 1), and the tip of the detection spring 16 faces the detection station. The vertical rail 11 can slide to be close to or away from the detection station. Thus, the workpiece to be measured can be placed at the detection station on the support base 2, with the gap to be measured facing the gap measuring mechanism 1. The vertical rail 11 can then be slid to allow the detection spring 16 to be inserted into the gap to be measured, thereby measuring the width of the gap. After measurement, the vertical rail 11 can be slid back to allow the detection spring 16 to exit the gap.

[0062] The gap measuring fixture provided in this embodiment also includes a linear drive 3, which is mounted on the support base 2. The vertical rail 11 is mounted on the drive end of the linear drive 3, and the linear drive 3 drives the gap measuring mechanism 1 to move closer to or further away from the detection station. This allows the vertical rail 11 to be driven by the linear drive 3 to move until the detection spring 16 is inserted into the gap to be measured, or pulled out of the gap to be measured.

[0063] In this embodiment, the linear drive 3 can be a telescopic cylinder (telescopic electric cylinder or telescopic pneumatic cylinder) or a lead screw linear drive.

[0064] The way in which the vertical rail 11 is slidably set on the support base 2 in this embodiment is existing technology in the field and will not be described in detail here.

[0065] Example 5 Same as Example 4, except that, as Figure 11 As shown, the gap measuring fixture provided in this embodiment also includes a rotary table 4 disposed on the support base 2. The rotary table 4 constitutes the detection station, and the workpiece to be tested is placed on the rotary table 4. The rotary table 4 is used to drive the workpiece to be tested to rotate. In this way, the workpiece to be tested can be placed on the rotary table 4 to rotate the workpiece to be tested until its gap to be measured is aligned with the gap measuring mechanism 1, or the gap to be measured on the workpiece to be tested can be measured at multiple points from the circumferential direction.

[0066] In this embodiment, the rotary table 4 can be an electric indexing plate.

[0067] Example 6 Same as Example 5, except that, as Figures 13-14 As shown, the component to be tested in this embodiment is a dry dual clutch 7. The dry dual clutch 7 has two clutches spaced apart along the axial direction, and the middle of the dry dual clutch 7 has coaxially distributed shaft holes 73. The edge of each clutch has heat dissipation windows 72 evenly distributed along the axial direction (in this embodiment, it is described as having three heat dissipation windows 72 per clutch). The heat dissipation windows 72 on the two clutches are aligned with each other. For each clutch, it has an annular clutch free clearance 71, and the three heat dissipation windows 72 on each clutch are aligned with the corresponding clutch free clearance 71.

[0068] like Figure 12-13 As shown, in this embodiment, the rotary table 4 includes a rotating component 41 and a central positioning shaft 42. The rotating component 41 has a horizontally arranged and coaxially rotatable supporting part. The central positioning shaft is vertically arranged and coaxially fixedly protruding from the middle of the supporting part. The rotating component 41 may also include a tray 411 and a drive motor 412 (preferably a servo motor). The tray 411 is horizontally arranged at the detection station. The lower end of the tray 411 is coaxially fixedly provided with a spindle 413 rotatably connected to the support base 2. The drive motor 412 is mounted on the support base 2, and the drive end of the drive motor 412 is connected to the spindle 413 for transmission. In order to improve the stability of the tray 411, a plane bearing 414 is also coaxially installed between the lower end of the tray 411 and the support base 2. The tray 411 constitutes the supporting part of the rotating component 41.

[0069] In actual testing, such as Figure 13 The dry dual clutch 7 is placed horizontally on the supporting part, and the central positioning shaft 42 passes through the shaft hole 73 (the central positioning shaft mates with the shaft hole 73, and its diameter is slightly smaller than the diameter of the shaft hole 73, so as to ensure that the central positioning shaft 42 can be quickly inserted into or pulled out of the shaft hole 73). Since the heat dissipation windows 72 of the two clutches on the dry dual clutch 7 are aligned, the six heat dissipation windows 72 of the entire dry dual clutch 7 are distributed in pairs. At this time, the dry dual clutch 7 is rotated by the rotating part 41, so that multiple pairs of heat dissipation windows 72 face the gap measuring mechanism 1 in sequence, and each pair of heat dissipation windows 72 transmits... When the rotating part 41 is aligned with the clearance measuring mechanism 1, the rotating part 41 stops rotating. At this time, the clearance measuring mechanism 1 slides close to the rotating part 41 and adjusts the height of the lower block to align with the corresponding two heat dissipation windows 72. The corresponding points of the two clutch free clearances 71 are then tested until the free clearances 71 of each clutch are tested at the corresponding three heat dissipation windows 72. That is, the three measured values ​​of each clutch free clearance 71 can be analyzed to compare with the design width value of the clutch free clearance 71, and finally it is determined whether the dry dual clutch 7 is qualified (the specific judgment criteria are not the focus of this embodiment and will not be elaborated here).

[0070] like Figure 13 As shown, in this embodiment, in order to improve the fixing effect of the dry dual clutch 7 on the lifting part, the rotary table can also be provided with a pressure plate 43 and a clamping bolt 44. The pressure plate 43 has a through hole 431 in the middle, and the upper end of the central positioning shaft 42 has a threaded hole 421 (blind hole) recessed in the middle. The pressure plate 43 can be placed coaxially on the upper end of the central positioning shaft 42, and the through hole 431 is aligned with the threaded hole 421. At this time, the clamping bolt 44 can be inserted to be threadedly connected to the threaded hole 421. The edge of the pressure plate 43 is turned down to abut against the edge of the dry dual clutch 7. At this time, the dry dual clutch 7 can be pressed tightly on the lifting part.

[0071] like Figure 12 As shown, the gap measuring fixture provided in this embodiment also includes a visual positioning component 5 (CCD camera or binocular camera). The visual positioning component 5 is disposed on the support base 2 or the upper end of the vertical rail (in short, the visual positioning component is close to the gap measuring mechanism 1), and its identification part faces the rotary table 4. The visual positioning component 5 is used to identify whether the heat dissipation window 72 of the dry dual clutch 7 on the rotary table 4 has rotated to be aligned with the gap measuring mechanism 11. If aligned, the rotary table 4 stops, and the gap measuring mechanism 1 measures the clutch free clearance of the dry dual clutch 7. This makes the automation and intelligence of the entire gap measuring fixture higher.

[0072] like Figure 12 As shown, this embodiment can also include a controller 6. The displacement measuring component, lifting drive component, linear drive component, drive motor, and vision positioning component are all electrically connected to the controller 6. The data measured by the displacement measuring component is directly calculated by the controller 6, which outputs the width value of the gap to be measured. The controller 6 can be an industrial computer or PLC controller mounted on the support base 2. In this case, the dry dual clutch 7 can be manually assembled on the rotary table, and the gap measuring fixture can automatically measure the clutch free clearance 71 of the dry dual clutch 7 and determine whether the dry dual clutch 7 is qualified. After the test is completed, the dry dual clutch 7 can be manually removed from the rotary table.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gap measuring mechanism, characterized in that, The device includes a vertical rail (11), an upper block (12), a lower block (13), a first elastic element (14), a displacement measuring element (15), and a detection spring (16). The vertical rail (11) is vertically arranged, the lower block (13) is arranged on the vertical rail (11), the upper block (12) is vertically slidably arranged on the vertical rail (11) and located above the lower block (13). The detection spring (16) is ">" shaped, with its tip facing away from the upper block (12) and the lower block (13). The upper end of the detection spring (16) is connected to the upper block (12), and the lower end of the detection spring (16) is connected to the lower block (13). The first elastic element (14) is... 4) The upper block (12) and the lower block (13) are positioned between the upper block (12) and the lower block (13). The elastic force of the first elastic element (14) is used to drive the upper block (12) to move upward away from the lower block (13). The displacement measuring element (15) is used to measure the vertical displacement of the upper block (12) relative to the lower block (13). The tip of the detection spring (16) is used to squeeze into the gap to be measured. Under the pressure of the upper and lower side walls of the gap to be measured, the upper block (12) overcomes the elastic force of the first elastic element (14) and moves downward relative to the lower block (13) so that the width value of the gap to be measured is measured by the displacement measuring element (15).

2. The gap measuring mechanism according to claim 1, characterized in that, The upper block (12) and the lower block (13) are both located on the front side of the vertical rail (11). The lower front end of the upper block (12) is provided with an upper connecting ear (121) protruding forward, and the upper front end of the lower block (13) is provided with a lower connecting ear (131) protruding forward. The upper connecting ear (121) and the lower connecting ear (131) are parallel to each other. The tip of the detection spring (16) faces forward. The upper end of the detection spring (16) is connected to the front end of the upper connecting ear (121), and the lower end of the detection spring (16) is connected to the front end of the lower connecting ear (131).

3. The gap measuring mechanism according to claim 1, characterized in that, The displacement measuring element (15) is disposed on the lower block (13) or the upper block (12), and the displacement measuring element (15) is a distance measuring probe or a displacement sensor.

4. The gap measuring mechanism according to any one of claims 1-3, characterized in that, The lower block (13) is vertically slidably mounted on the vertical rail (11).

5. The gap measuring mechanism according to claim 4, characterized in that, It also includes a lifting drive (17), which is mounted on the vertical rail (11) and the driving end of the lifting drive (17) is connected to the lower block (13) in a transmission manner. The lifting drive (17) is used to drive the lower block (13) to move the upper block (12) vertically on the vertical rail (11) so as to adjust the vertical height of the detection spring (16) to align with the gap to be measured.

6. The gap measuring mechanism according to claim 5, characterized in that, The lower block (13) is movably connected to the driving end of the lifting drive (17), and the movable connection between the two is reserved with a margin for the lower block (13) to move upward relative to the driving end of the lifting drive (17).

7. A gap measuring fixture, characterized in that, Includes a support base (2) and a gap measuring mechanism (1) as described in any one of claims 1-6, wherein the vertical rail (11) is slidably mounted on the support base (2), the support base (2) has a testing station for placing the test piece, and the tip of the testing spring (16) faces the testing station, and the vertical rail (11) can slide to be close to or away from the testing station.

8. The gap measuring fixture according to claim 7, characterized in that, It also includes a linear drive (3), which is mounted on the support base (2), and the vertical rail (11) is mounted on the drive end of the linear drive (3). The linear drive (3) drives the gap measuring mechanism (1) to move closer to or further away from the detection station.

9. The gap measuring fixture according to claim 7 or 8, characterized in that, It also includes a rotary table (4) disposed on the support base (2), the rotary table (4) constitutes the testing station, the test piece is placed on the rotary table (4), and the rotary table (4) is used to drive the test piece to rotate.

10. The gap measuring fixture according to claim 9, characterized in that, It also includes a sensory positioning component (5), which is disposed on the support base (2) or the upper end of the vertical rail (11), with its identification part facing the rotary table (4). The sensory positioning component (5) is used to identify whether the gap to be measured of the test piece on the rotary table (4) has been rotated to be aligned with the gap measuring mechanism (1). If aligned, the rotary table (4) stops, and the gap measuring mechanism (1) measures the gap to be measured of the test piece.

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