New material bevel gear tooth surface run-out replacement testing fixture and testing method of new material bevel gear tooth surface run-out replacement testing fixture

Abstract

The invention relates to the field of gear detection, in particular to a new material bevel gear tooth surface runout substitute gauge and a detection method thereof, comprising a bottom plate, one side of the top of the bottom plate is provided with a dial indicator body, the bottom plate is provided with a movable base below the dial indicator body, and the top of the movable base is rotatably provided with a tooth die body. According to the invention, by pushing the tooth die body to the bottom of the dial indicator body, positioning of the movable base can be realized through mutual clamping between the limiting column and the limiting cavity, at the moment, the mounting surface of the workpiece can be detected through the dial indicator body, and after detection is completed, the mounting surface of the workpiece can be detected only by lifting up the pressing plate. In this way, multi-stage push-out of the tooth die body can be achieved through the first triggering piece and the second triggering piece, so that positioning of the tooth die body is relieved, and a user can conveniently conduct re-detection on a workpiece after tooth replacement and detection on a next workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of gear detection, and in particular to a replacement detection tool for tooth surface runout of a new material bevel gear and a detection method thereof. Background Art

[0002] Straight bevel gears are widely used in automotive differentials. They are usually made of new materials such as titanium-based composites, magnesium-based composites, carbon fiber-reinforced composites, or high-entropy alloys to ensure high-load differential scenarios.

[0003] As the primary working surface of bevel gears, tooth surfaces play a critical role in mechanical transmission. Excessive runout of the tooth surface relative to the inner bore indicates a misalignment between the tooth surface and the inner bore, with the tooth surface significantly deviating from the inner bore's centerline. This accelerates tooth wear during operation, shortening the gear's lifespan and creating loud noise that can affect user experience. Therefore, after bevel gear production, tooth runout testing relative to the inner bore is essential.

[0004] When traditionally testing the runout of bevel gears relative to the inner hole, the gear must first be positioned by passing it through the inner hole taper mandrel, then assembled onto a runout meter and tested tooth by tooth using a dial indicator.

[0005] During this series of operation steps, it was found that this method of positioning the tapered mandrel was rather cumbersome and time-consuming. In batch production inspection, the inspection efficiency was low and the labor intensity was high. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a new material bevel gear tooth surface runout replacement detection fixture and detection method.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A replacement inspection tool for tooth surface runout of a new material bevel gear and a method for detecting the same include a base plate, a dial indicator body provided on one side of the top of the base plate, a movable base provided below the dial indicator body on the base plate, and a tooth die body rotatably provided on the top of the movable base; The fixing seat is mounted on the base of the dial indicator body, a first triggering member is movably provided on the fixing seat through a first spring, an adjusting seat is fixedly provided on the first triggering member, and a plurality of extrusion members are movably provided in the adjusting seat through a movable member; The second triggering member is movably arranged on the first triggering member through a second spring, an active push plate is fixedly arranged on the second triggering member, a driven push plate is adapted to be arranged on the fixed seat corresponding to the active push plate, and a push member for pushing the movable member is fixedly arranged on the driven push plate; The top seat is fixedly arranged on the fixed seat, and a plurality of fixed cavities are opened at the bottom of the top seat. Clamps are movably arranged on both sides of the fixed cavities, and pressure pieces adapted to the extrusion pieces are fixedly arranged on the clamps. The pressure plate is located at the bottom of the fixed seat and moves vertically. A limiting column for positioning the movable base is provided at the bottom of the pressure plate. The top of the pressure plate is adapted to be provided with a fixing piece corresponding to the fixed cavity. The fixing piece is adapted to be provided with a slot corresponding to the clamping piece, and a pad is also movably provided on the pressure plate. The push rod is pushed to move vertically by a fixing member, a movable rod is arranged on the push rod for horizontal movement, and supporting grooves are adapted to be provided on the first trigger member and the corresponding movable rods on the active push plate.

[0008] In addition, the preferred structure is that the movable base is movably arranged on the top of the base plate through a slide rail, a rotating chassis is rotatably arranged on the top of the movable base, the tooth mold body is installed on the rotating chassis through bolts, and the corresponding limit columns on the movable base are adapted to open limit cavities.

[0009] In addition, a preferred structure is that both sides of the fixing seat are provided with spring cavities, both of which are outwardly installed with first springs, and the adjustment seat is adapted to move between the spring cavities on both sides; A plurality of first connecting rods are fixedly provided on the first trigger member, the other ends of the first connecting rods extend into the elastic cavity and are fixedly connected to the adjustment seat, a plurality of first guide columns are fixedly provided in the elastic cavity, and the adjustment seat is guided to move by the first guide columns.

[0010] In addition, a preferred structure is that a push cavity is fixedly provided in the adjustment seat, a plurality of second guide pillars are fixedly provided in the push cavity, the movable member and the push member are guided to move by the second guide pillars, a plurality of extrusion members are fixedly provided on the movable member, and corresponding extrusion members on the adjustment seat are adapted to have through cavities; The push piece is connected to the driven push plate through a third connecting rod. A plurality of reset columns are fixedly provided on the bottom of the driven push plate, and the driven push plate and the active push plate are made of magnetic materials adapted to attract each other.

[0011] In addition, the preferred structure is that a concave cavity is adapted to be opened on one side of the first trigger member corresponding to the second trigger member, and a plurality of second springs are arranged outward on the other side of the first trigger member, the other ends of the second springs are connected to the active push plate, and the second trigger member and the active push plate are fixedly connected by a second connecting rod.

[0012] In addition, a preferred structure is that a connected top cavity is opened on the top seat above the fixed cavity, one end of the ejector rod extends into the top seat and a ejector piece is adapted to be provided corresponding to the top cavity; The bottom of the other end of the top rod is provided with a movable cavity, and the movable rod is adapted to move laterally in the movable cavity. A plurality of guide members are fixedly arranged in the movable cavity, and corresponding guide members on the movable rod are adapted to be provided with guide grooves.

[0013] In addition, a preferred structure is that a support plate is fixedly provided on the top of the fixing seat, vertical cavities are adapted to be opened on the support plate corresponding to the top rod and the movable rod, and the top rod is located in the top cavity and the vertical cavity and moves vertically; A fixing plate is fixedly provided on the first trigger member, and supporting grooves are adapted to be provided on the fixing plate and the active push plate corresponding to the movable rods, and a push-back plate is adapted to be provided on the first trigger member corresponding to the movable rod.

[0014] In addition, the preferred structure is that a horizontal plate is fixedly provided on the pressure plate, a movable frame is movably provided on the horizontal plate, a plurality of fixed columns are fixedly provided inside the movable frame, through holes are adapted to be opened on the corresponding fixed columns on the horizontal plate, and a pad is fixedly provided on the top of the movable frame.

[0015] In addition, a preferred structure is that the top seat is provided with a clamping cavity on both sides of the fixed cavity, a plurality of third springs are provided outwardly in the clamping cavity, and the other ends of the third springs are connected to the clamps; Both sides of the bottom of the top seat are fixedly provided with columns downward, and the pressure plate is guided and moved by the columns.

[0016] A method for detecting tooth surface runout of a bevel gear made of a new material using an alternative inspection tool comprises the following steps: S1: Place the workpiece on the tooth die body and make the tooth surfaces of the two pieces mesh with each other; S2: The tooth mold body is translated to the bottom of the dial indicator body, and the first trigger member and the second trigger member are pushed inward through the tooth mold body. Then the pressure plate automatically falls down, and the limit column is automatically locked into the limit cavity to fix the tooth mold body; S3: Adjust the dial indicator body so that the needle of the dial indicator body contacts the installation surface of the workpiece, and then set the dial indicator to zero; S4: Rotate the tooth die body one circle, and the workpiece will rotate accordingly. During the rotation, observe the reading change of the dial indicator body, which is the runout value of the gear mounting surface. S5: Lift the pressing plate upwards. At this time, the limiting column automatically releases the clamping position between the limiting cavity, and the tooth die body is pushed outwards through the first trigger member and the second trigger member. Finally, the user can take out the workpiece. S6: Take out the workpiece and rotate it randomly, then place the tooth-changing workpiece on the tooth die body again and make the tooth surfaces of the two pieces mesh with each other. Then repeat the actions of S2, S3, S4, and S5 in sequence, and observe the change in the dial indicator reading after the tooth change, that is, the runout value of the gear mounting surface after the tooth change; S7: Finally, the user takes out the workpiece and takes another workpiece, and repeats S1, S2, S3, S4, S5, and S6 in sequence.

[0017] The beneficial effects of the present invention are as follows: by pushing the tooth mold body to the bottom of the dial indicator body, the movable base can be positioned by the mutual engagement between the limit column and the limit cavity. At this time, the workpiece can be inspected through the dial indicator body, and after the inspection is completed, it is only necessary to lift the pressure plate upward to achieve multi-stage pushing out of the tooth mold body through the first trigger member and the second trigger member to release the positioning of the tooth mold body, making it convenient for the user to re-inspect the workpiece after tooth change and inspect the next workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of an alternative inspection tool for tooth surface runout of a bevel gear made of a new material proposed by the present invention; Figure 2 It is a structural schematic diagram of the movable base and the tooth mold body proposed in the present invention; Figure 3 It is a structural schematic diagram of the fixing seat, the first triggering member, the second triggering member, the top seat, the pressure plate, the ejector rod and the driven push plate proposed in the present invention; Figure 4 for Figure 3 A schematic diagram of the structure when the second trigger member is pushed inward; Figure 5 for Figure 4 A schematic structural diagram of the first trigger member and the second trigger member being pushed inward at the same time; Figure 6 for Figure 3 Schematic diagram of the structure after the pressure plate is hidden; Figure 7 Schematic diagram of the structure of the first trigger member, the second trigger member and the driven push plate proposed in the present invention; Figure 8 Schematic diagram of the internal structure of the first trigger member proposed in the present invention; Figure 9 for Figure 8 A schematic diagram of the structure when the second trigger member is pushed inward; Figure 10 for Figure 9 Schematic diagram of the structure after the pad in FIG falls; Figure 11 It is a structural schematic diagram of the driven push plate proposed in the present invention; Figure 12 It is a structural schematic diagram of the fixing seat, the first triggering member and the ejector rod proposed in the present invention; Figure 13 It is a structural schematic diagram of the fixing seat proposed in the present invention; Figure 14 Schematic diagram of the internal structure of the bullet chamber proposed in the present invention; Figure 15 It is a structural schematic diagram of the top rod and the movable rod proposed in the present invention; Figure 16 for Figure 15 Schematic diagram of the explosion structure between the top rod and the movable rod; Figure 17 It is a structural schematic diagram of the top seat, pressure plate and top rod proposed in the present invention; Figure 18 It is a structural schematic diagram of the pressing plate proposed in the present invention; Figure 19 It is a structural schematic diagram of the cushion block proposed in the present invention; Figure 20 It is a structural schematic diagram of the top seat proposed in the present invention; Figure 21 for Figure 20 An enlarged detail of the card cavity in FIG. Figure 22 for Figure 21 Schematic diagram of the internal structure of the card cavity; Figure 23 Schematic diagram of the internal structure of the top cavity proposed in the present invention; Figure 24 It is a structural schematic diagram of the clamping member and the pressure-bearing member proposed in the present invention.

[0019] In the figure: 1 bottom plate, 11 dial indicator body, 2 movable base, 20 limit cavity, 21 rotating chassis, 22 tooth die body, 3 fixed seat, 31 elastic cavity, 32 first spring, 33 first guide column, 34 support plate, 341 vertical cavity, 4 first trigger, 41 first connecting rod, 42 adjustment seat, 421 push cavity, 422 second guide column, 43 movable member, 431 extrusion member, 44 fixed plate, 45 push back plate, 46 concave cavity, 5 second trigger, 51 second connecting rod, 52 active push plate, 53 second spring, 6 top seat, 61 column, 62 fixed cavity, 63 clamping cavity, 630 third spring, 631 clamping member, 632 pressure member, 64 top cavity, 7 pressure plate, 71 limit column, 72 fixing member, 721 clamping slot, 73 cross plate, 74 pad, 741 movable frame, 742 fixed column, 8 push rod, 81 movable cavity, 811 guide member, 82 movable rod, 821 guide slot, 822 support slot, 83 top member, 9 driven push plate, 91 third connecting rod, 92 push member, 93 reset column. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See Figure 1-2 A dial indicator body 11 is disposed on one side of the top of the base plate 1. A movable base 2 is movably mounted on the top of the base plate 1 via a slide rail. A rotating chassis 21 is rotatably mounted on the top of the movable base 2. The tooth die body 22 is bolted to the rotating chassis 21. The movable base 2 also includes a limit cavity 20 corresponding to each limit post 71. It is worth noting that the specific working structure and usage of the dial indicator body 11 are known in the art and will not be described in detail.

[0022] The user can replace the tooth die body 22 according to different types of workpieces, and replace the corresponding positioning and ejection components such as the fixing seat 3 with suitable size specifications.

[0023] See Figure 1 、 3 -7, 12-14, both sides of the fixed seat 3 are provided with spring cavities 31, each of which is equipped with a first spring 32 facing outward. The adjustment seat 42 is adapted to move between the two spring cavities 31. A plurality of first connecting rods 41 are fixedly mounted on the first trigger member 4. The other ends of the first connecting rods 41 extend into the spring cavities 31 and are fixedly connected to the adjustment seat 42. This allows the adjustment seat 42 to compress the first spring 32 when the first trigger member 4 is pushed inward, thereby allowing the elastic force of the first spring 32 to subsequently eject the adjustment seat 42 and the first trigger member 4 outward.

[0024] Among them, a plurality of first guide pillars 33 are fixedly arranged in each of the elastic chambers 31, and the adjustment seat 42 is guided to move by the first guide pillars 33. By providing the first guide pillars 33, the stability of the adjustment seat 42 during the movement process can be improved.

[0025] See Figure 3-11 A push cavity 421 is fixedly disposed within the adjustment seat 42. Multiple second guide posts 422 are fixedly disposed within the push cavity 421. Both the movable member 43 and the push member 92 are guided by the second guide posts 422. Multiple extrusion members 431 are fixedly disposed on the movable member 43, and corresponding through cavities are adapted to be formed in the corresponding extrusion members 431 on the adjustment seat 42. The movable member 43 and the push member 92 are fixedly connected. The push member 92 is connected to the driven push plate 9 via a third connecting rod 91. Multiple reset posts 93 are fixedly disposed at the bottom of the driven push plate 9. The reset posts 93 ensure that the spacer 74 moves synchronously with the outward movement of the driven push plate 9.

[0026] The driven push plate 9 and the active push plate 52 are made of magnetic materials adapted to attract each other, and the pad 74 is adapted to be located between the driven push plate 9 and the active push plate 52 .

[0027] Among them, a concave cavity 46 is adapted to be opened on one side of the first trigger member 4 corresponding to the second trigger member 5, and a plurality of second springs 53 are arranged outward on the other side of the first trigger member 4. The other ends of the second springs 53 are connected to the active push plate 52, and the second trigger member 5 and the active push plate 52 are fixedly connected by a second connecting rod 51.

[0028] When the second trigger member 5 is pushed into the concave cavity 46, the second spring 53 is stretched, and the active push plate 52 can move toward the cushion block 74, so that the active push plate 52 can push the cushion block 74 and the driven push plate 9. When the driven push plate 9 moves, it can drive the third connecting rod 91, the pushing member 92, the movable member 43 and the extruding member 431 to move, thereby pushing the extruding member 431 out of the adjustment seat 42.

[0029] When the pressure plate 7 moves downward, it can drive the pad 74 to move downward synchronously. At this time, the pad 74 is no longer located between the driven push plate 9 and the active push plate 52. At this time, the driven push plate 9 automatically moves toward the active push plate 52 through the magnetic force to drive the third connecting rod 91, the push piece 92, the movable piece 43 and the extrusion piece 431 to move, so that the extrusion piece 431 can be retracted into the adjustment seat 42 again.

[0030] See Figure 3-6 , 12-16, 23, a connected top cavity 64 is defined on the top seat 6 above the fixed cavity 62. One end of the ejector rod 8 extends into the top seat 6 and is adapted to fit within the top cavity 64. When the fixed member 72 is fully inserted into the fixed cavity 62, the ejector rod 83 can be lifted by the fixed member 72, thereby driving the ejector rod 8 and the movable rod 82 to move upward.

[0031] When the fixing member 72 falls off from the fixing cavity 62, the fixing member 72 no longer supports the lifting member 83. At this time, the lifting rod 8, the movable rod 82 and the lifting member 83 can automatically fall down by their own gravity.

[0032] The bottom of the other end of the top rod 8 is provided with a movable cavity 81, and the movable rod 82 is adapted to move laterally within the movable cavity 81. A plurality of guide members 811 are fixedly disposed within the movable cavity 81, and corresponding guide members 811 are adapted to be provided on the movable rod 82 with guide grooves 821. The adaptation between the guide members 811 and the guide grooves 821 allows the movable rod 82 to move stably within the movable cavity 81 and prevents the movable rod 82 from falling out of the movable cavity 81. It is worth noting that the guide member 811 is fixedly disposed within the movable cavity 81 at one end near the outside to increase the movable distance of the movable rod 82.

[0033] A support plate 34 is fixed to the top of the fixed base 3. Vertical cavities 341 are formed on the support plate 34, corresponding to the push rod 8 and the movable rod 82. The push rod 8 moves vertically within the top cavity 64 and the vertical cavity 341. Guide rods are vertically provided on both the vertical cavity 341 and the top cavity 64 to ensure the stability of the push rod 8 during vertical movement. The bottom of the vertical cavity 341 is penetrated to prevent it from interfering with the movement of the movable rod 82.

[0034] Among them, the first trigger member 4 is fixedly provided with a fixed plate 44, and the fixed plate 44 and the active push plate 52 are both adapted to have support grooves 822 formed thereon, and the first trigger member 4 is adapted to have a push-back plate 45 formed thereon, corresponding to the active rod 82. When the second spring 53 is stretched, the distance between the fixed plate 44 and the active push plate 52 increases, which allows the movable rod 82 to fall between the fixed plate 44 and the active push plate 52 by its own gravity, and the end of the movable rod 82 can be adapted to be clamped in the support grooves 822 on the fixed plate 44 and the active push plate 52. In this way, the movable rod 82 can push the fixed plate 44 and the active push plate 52 apart, and the stretched second spring 53 cannot be reset by its own elastic force.

[0035] By disposing the push-back plate 45 , the movable rod 82 can be driven to move when the first trigger member 4 moves, so that the end of the movable rod 82 can be adapted to be located above the support groove 822 .

[0036] See Figure 17-19 The pressure plate 7 is located at the bottom of the fixed seat 3 and moves vertically. A limiting column 71 for positioning the movable base 2 is provided at the bottom of the pressure plate 7. The top of the pressure plate 7 is adapted to be equipped with a fixing piece 72 corresponding to the fixed cavity 62, and the fixing piece 72 is adapted to be equipped with a card slot 721 corresponding to the card piece 631.

[0037] The bottom of the top seat 6 is fixed with columns 61 on both sides, and the pressure plate 7 is guided by the columns 61 to improve the stability of the pressure plate 7 during vertical movement. The bottom of the columns 61 is provided with anti-dropping parts to prevent the pressure plate 7 from falling off the columns 61.

[0038] Among them, a horizontal plate 73 is fixedly provided on the pressure plate 7, a movable frame 741 is movably provided on the horizontal plate 73, a plurality of fixed columns 742 are fixedly provided inside the movable frame 741, and corresponding fixed columns 742 on the horizontal plate 73 are adapted to be opened with through holes, and a pad 74 is fixedly provided on the top of the movable frame 741.

[0039] By the arrangement of the movable frame 741 and the fixed post 742, the cushion block 74 can be positioned on the cross plate 73 and move laterally. However, since the movable frame 741 and the fixed post 742 are positioned on the pressing plate 7 and move, the cushion block 74 can move vertically synchronously with the pressing plate 7.

[0040] See Figure 17 、 20 -22, 24, a clamping cavity 63 is opened on both sides of the fixing cavity 62 of the top seat 6, and a plurality of third springs 630 are arranged outwardly in the clamping cavity 63, and the other ends of the third springs 630 are connected to the clamping pieces 631.

[0041] By providing the third spring 630 , the latch 631 can be pushed outward from the latch cavity 63 , so that the latch 631 can be stably latched in the latch slot 721 .

[0042] The bottom of the clamp 631 is set as an inclined surface, so that when the fixing member 72 is inserted into the fixing cavity 62, the clamp 631 can be pushed into the clamp cavity 63 through the inclined surface on the clamp 631. When the card slot 721 and the card cavity 63 are aligned, the clamp 631 can be automatically pushed into the card slot 721 through the elastic force of the third spring 630 to fix the fixing member 72 in the fixing cavity 62, thereby achieving the fixation of the pressure plate 7.

[0043] The clamping member 631 is fixedly provided with a pressure-receiving member 632, and an adaptive inclined surface is provided between the pressure-receiving member 632 and the extrusion member 431. When the extrusion member 431 is inserted into the clamping member cavity 63 from the side, the inclined surfaces on the extrusion member 431 and the pressure-receiving member 632 can squeeze the clamping member 631 inward, thereby squeezing the clamping member 631 into the clamping member cavity 63, thereby releasing the clamping effect of the clamping member 631 on the clamping slot 721.

[0044] It is worth noting that guide blocks are fixed on both sides of the card cavity 63, and the corresponding guide blocks on the card 631 are adapted to have guide cavities. Through the adaptation between the guide blocks and the guide cavities, not only the stability of the card 631 during movement can be improved, but also the card 631 can be prevented from falling off from the card cavity 63.

[0045] In this embodiment, when the user needs to test the runout of a workpiece's tooth surface relative to the inner hole, they simply place the workpiece on the tooth mold body 22 and engage the tooth surfaces of the two pieces. The tooth mold body 22 is then translated to the bottom of the dial indicator body 11. The first and second trigger members 4 and 5 are pushed inward through the tooth mold body 22. The pressure plate 7 then automatically drops, and the limit post 71 automatically engages the limit cavity 20, securing the tooth mold body 22.

[0046] During the movement of the tooth die body 22, it first contacts the second trigger member 5, so that the second trigger member 5 can be pushed into the concave cavity 46. Thus, the second trigger member 5 can drive the second connecting rod 51 and the active push plate 52 to move, thereby stretching the second spring 53.

[0047] By moving the active push plate 52 , the pad 74 , the driven push plate 9 , the third connecting rod 91 , the push member 92 , the movable member 43 and the extrusion member 431 can be pushed, thereby pushing the extrusion member 431 out of the adjustment seat 42 .

[0048] As the tooth mold body 22 continues to move, the second triggering member 5 is pushed into the concave cavity 46, causing the tooth mold body 22 to contact the first triggering member 4. This allows the tooth mold body 22 to push the first triggering member 4, thereby pushing the first connecting rod 41 and the adjustment seat 42 to push the adjustment seat 42 toward the inside of the elastic cavity 31. At this time, the first spring 32 is compressed, and the extrusion member 431 on the adjustment seat 42 is pushed into the clamping cavity 63.

[0049] During the movement of the first trigger member 4, it can push the movable rod 82 to move via the push-back plate 45. When the first trigger member 4 and the second trigger member 5 are pushed to the innermost position, the movable rod 82 is pushed by the push-back plate 45 to between the active push plate 52 and the fixed plate 44, and the ends of the movable rod 82 are aligned with the support grooves 822 on the active push plate 52 and the fixed plate 44.

[0050] It's worth noting that because the first trigger member 4 compresses the first spring 32 when pushed, and the second trigger member 5 stretches the second spring 53 when pushed, the first trigger member 4 will also be displaced accordingly when the second trigger member 5 is pushed. However, this displacement is harmless, as both the first and second trigger members 4 and 5 must be moved by the tooth mold body 22, and the order of movement is not critical. Furthermore, as the tooth mold body 22 pushes, it pushes the first and second trigger members 4 and 5 completely inward, ensuring that the first spring 32 is compressed to its maximum value and the second spring 53 is stretched to its maximum value.

[0051] Furthermore, when the first trigger member 4 and the second trigger member 5 are pushed to the innermost position, the extruding member 431 in the adjusting seat 42 is adapted to be inserted from the side into the clamping member cavity 63 on the top seat 6. In this way, the extruding member 431 can squeeze the pressure-receiving member 632, thereby driving the clamping member 631 in the clamping member cavity 63 to move inward, and at this time, the third spring 630 is compressed.

[0052] This releases the engagement between the latch 631 and the slot 721, allowing the pressure plate 7 to automatically drop under its own gravity. Furthermore, when both the first trigger member 4 and the second trigger member 5 are pushed to their innermost positions, the limiting cavities 20 on the movable base 2 align with the limiting posts 71 on the pressure plate 7. This allows the limiting posts 71 to automatically fall into the limiting cavities 20 as the pressure plate 7 falls. The engagement between the limiting posts 71 and the limiting cavities 20 secures the movable base 2, allowing the tooth mold body 22 to be stably positioned at the bottom of the dial indicator body 11. At this point, the user can release their grip on the tooth mold body 22.

[0053] Furthermore, during the falling process of the pressure plate 7, the fixing member 72 also falls synchronously. At this time, the fixing member 72 no longer supports the lifting member 83, and the lifting rod 8, the movable rod 82 and the lifting member 83 can automatically fall by their own gravity. At this time, the movable rod 82 can fall by gravity into the support groove 822 on the active push plate 52 and the fixed plate 44. In this way, the second spring 53 can be stretched out by the movable rod 82 to prevent the second spring 53 from being compressed and reset by the elastic force.

[0054] As the pressure plate 7 descends, the cushion block 74 also moves downward synchronously, and the cushion block 74 located between the active push plate 52 and the driven push plate 9 descends. The driven push plate 9 automatically moves toward the active push plate 52 through magnetic attraction, driving the third connecting rod 91, the push member 92, the movable member 43, and the extrusion member 431 to move, thereby retracting the extrusion member 431 into the adjustment seat 42. This ensures that the extrusion member 431 is no longer located in the clamping member cavity 63 and compressing the pressure member 632. The clamping member 631 can then automatically return to its original position due to the elastic force of the third spring 630, allowing the user to subsequently reassemble the fixing member 72 into the fixing cavity 62.

[0055] Furthermore, once the user has completed securing the tooth die body 22, they only need to adjust the dial indicator body 11 so that the dial indicator needle contacts the test surface of the workpiece and then reset the dial indicator to zero. The tooth die body 22 is then rotated one circle, and the workpiece rotates accordingly. During this rotation, the user observes the changes in the dial indicator reading on the dial indicator body 11 to complete the workpiece inspection.

[0056] When observing the dial indicator body 11, if the reading fluctuates within the normal tolerance range, that is, the runout of the workpiece mounting surface is acceptable, indicating that the runout of the workpiece tooth surface relative to the inner hole is acceptable. If the reading fluctuation value at a certain point on the workpiece inspection surface is large and exceeds the normal tolerance range, that is, the runout of the workpiece mounting surface is unacceptable, indicating that the runout of the workpiece tooth surface relative to the shaft hole is unacceptable, then the workpiece should be further inspected after removal.

[0057] Furthermore, when the workpiece inspection is completed, the user only needs to pull the pressure plate 7 upwards, so that the tooth mold body 22 can be automatically popped out through the multi-level elastic force of the first spring 32 and the second spring 53, so that the user can inspect the workpiece after tooth replacement or inspect the next workpiece.

[0058] When the user pulls the pressure plate 7 upward, it drives the limiting post 71 upward in tandem. When the limiting post 71 reaches above the limiting cavity 20, the engagement between the limiting post 71 and the limiting cavity 20 is released. The movable base 2 is now no longer fixed, and the compressed first spring 32 automatically resets due to its elastic force, thereby pushing the adjustment seat 42 outward. This synchronizes the outward movement of the adjustment seat 42, the first connecting rod 41, and the first trigger member 4, pushing the tooth die body 22 outward.

[0059] When the pressing plate 7 moves upward to the top, the fixing member 72 on the pressing plate 7 is adapted to move into the fixing cavity 62. At this time, the fixing member 72 can be fixed by the mutual engagement between the clamping member 631 and the clamping groove 721, so that the pressing plate 7 can be lifted and reset below the fixing seat 3.

[0060] When the fixing member 72 moves into the fixing cavity 62, the fixing member 72 can push the ejector 83 upward, thereby driving the ejector rod 8 and the movable rod 82 to move upward synchronously, thereby releasing the clamping of the movable rod 82 between the active push plate 52 and the support groove 822 on the fixing plate 44. At this time, the stretched second spring 53 can automatically contract and return to its original position due to its elastic force, thereby driving the active push plate 52 to move outward, thereby driving the second trigger member 5 to move outward and pushing the tooth die body 22 outward.

[0061] It is worth noting that, because the upward movement distance of the pressing plate 7 is relatively short, when the user pulls the pressing plate 7 upward, the first spring 32 and the second spring 53 are reset almost simultaneously. This allows the first trigger member 4 and the second trigger member 5 to be pushed outward almost simultaneously, thereby achieving the ejection of the tooth mold body 22 through the multi-stage ejection of the first trigger member 4 and the second trigger member 5.

[0062] Furthermore, since the movable rod 82 can be located on the ejector rod 8 and move, when the first trigger member 4 moves outward, even if it can drive the active push plate 52 and the fixed plate 44 to move a small amount, since the movable rod 82 can also move, it will not affect the ejection of the second trigger member 5.

[0063] Furthermore, the pad 74 can be positioned and moved on the cross plate 73, and a reset post 93 is provided on the driven push plate 9 in correspondence with the pad 74. This allows the driven push plate 9 to move outwards through the first trigger 4, and the reset post 93 can push the pad 74 to move synchronously, so that the pad 74 is always positioned between the active push plate 52 and the driven push plate 9.

[0064] Furthermore, the contact walls between the first and second trigger members 4, 5, and the tooth mold body 22 are all made of a low-friction material, and their contact surfaces are each provided with an array of micro-protrusions to reduce the number of actual contact points, further reducing the friction coefficient. This reduces the impact of the first and second trigger members 4, 5 on the rotation of the tooth mold body 22, ensuring that the user can easily rotate the tooth mold body 22. It is worth noting that this is prior art and will not be elaborated upon in detail.

[0065] It's worth noting that during the bevel gear machining process, tooth dies are typically used to locate the bevel gear tooth surfaces for machining the inner bore, shaft shank, mounting surface, and other processes. The bevel gear tooth surfaces serve as the positioning reference during machining. Therefore, using a tooth die inspection, using the bevel gear tooth surfaces as the inspection reference to detect tooth change runout on the gear mounting surface, unifies the machining and inspection references. This allows testing the mounting surface's tooth change runout to accurately and indirectly reflect the runout of the tooth surface relative to the inner bore. Therefore, testing the bevel gear mounting surface's tooth change runout can be used as a proxy for tooth surface runout relative to the inner bore.

[0066] Furthermore, the tooth runout of the bevel gear mounting surface is detected instead of the runout of the tooth surface relative to the inner hole, avoiding the troublesome process of positioning the inner hole taper mandrel and using a dial indicator on the runout meter to check each tooth. This simplifies the operation and saves time and effort, especially in batch production inspection, reducing labor intensity and improving production efficiency.

[0067] In the present invention, by pushing the tooth mold body 22 to the bottom of the dial indicator body 11, the movable base 2 can be positioned by the mutual clamping between the limit column 71 and the limit cavity 20. At this time, the installation surface of the workpiece can be detected by the dial indicator body 11, and after the detection is completed, it is only necessary to lift the pressure plate 7 upward to realize the multi-stage push-out of the tooth mold body 22 through the first trigger member 4 and the second trigger member 5 to release the positioning of the tooth mold body 22, so as to facilitate the user to detect the workpiece after tooth change and the next workpiece.

[0068] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A new material bevel gear tooth surface runout replacement test fixture, characterized in that: include: A base plate (1), a dial indicator body (11) is provided on one side of the top of the base plate (1), a movable base (2) is provided on the base plate (1) below the dial indicator body (11), and a tooth mold body (22) is rotatably provided on the top of the movable base (2); A fixed seat (3), the fixed seat (3) being mounted on a base of a dial gauge body (11), a first triggering member (4) being movably provided on the fixed seat (3) via a first spring (32), an adjusting seat (42) being fixedly provided on the first triggering member (4), and a plurality of extrusion members (431) being movably provided in the adjusting seat (42) via a movable member (43); a second triggering member (5), the second triggering member (5) being movably arranged on the first triggering member (4) via a second spring (53), an active push plate (52) being fixedly arranged on the second triggering member (5), a driven push plate (9) being adapted to correspond to the active push plate (52) on the fixed seat (3), and a push member (92) for pushing the movable member (43) being fixedly arranged on the driven push plate (9); A top seat (6), wherein the top seat (6) is fixedly arranged on the fixed seat (3), a plurality of fixed cavities (62) are provided at the bottom of the top seat (6), clamping members (631) are movably provided on both sides of the fixed cavities (62), and pressure-bearing members (632) adapted to the extrusion members (431) are fixedly provided on the clamping members (631); A pressure plate (7), the pressure plate (7) is located at the bottom of the fixed seat (3) and moves vertically. A limiting column (71) for positioning the movable base (2) is provided at the bottom of the pressure plate (7). A fixing piece (72) is adapted to be provided at the top of the pressure plate (7) in correspondence with the fixed cavity (62). A card slot (721) is adapted to be provided on the fixing piece (72) in correspondence with the card piece (631). A pad (74) is also movably provided on the pressure plate (7). A push rod (8) is pushed to move vertically by a fixing member (72), a movable rod (82) is provided on the push rod (8) for horizontal movement, and a supporting groove (822) is adapted to be provided on the corresponding movable rod (82) on the first trigger member (4) and the active push plate (52).

2. The alternative gauge for measuring tooth surface runout of a new material bevel gear according to claim 1 is characterized in that: The movable base (2) is movably arranged on the top of the base plate (1) via a slide rail, a rotating chassis (21) is rotatably arranged on the top of the movable base (2), the tooth die body (22) is mounted on the rotating chassis (21) via bolts, and corresponding limiting columns (71) on the movable base (2) are adapted to be provided with limiting cavities (20).

3. The alternative gauge for measuring tooth surface runout of a new material bevel gear according to claim 1 is characterized in that: Both sides of the fixing seat (3) are provided with spring cavities (31), first springs (32) are installed outwardly in the spring cavities (31), and the adjustment seat (42) is adapted to move between the spring cavities (31) on both sides; A plurality of first connecting rods (41) are fixedly provided on the first trigger member (4), the other ends of the first connecting rods (41) are all extended into the spring cavity (31) and are fixedly connected to the adjustment seat (42), a plurality of first guide columns (33) are fixedly provided in the spring cavity (31), and the adjustment seat (42) is guided and moved by the first guide columns (33).

4. The alternative gauge for measuring tooth surface runout of a new material bevel gear according to claim 3 is characterized in that: A push cavity (421) is fixedly provided in the adjusting seat (42), a plurality of second guide posts (422) are fixedly provided in the push cavity (421), the movable member (43) and the push member (92) are guided and moved by the second guide posts (422), a plurality of extrusion members (431) are fixedly provided on the movable member (43), and corresponding extrusion members (431) on the adjusting seat (42) are adapted to be provided with through cavities; The push piece (92) is connected to the driven push plate (9) via a third connecting rod (91), a plurality of reset columns (93) are fixedly provided at the bottom of the driven push plate (9), and the driven push plate (9) and the active push plate (52) are made of magnetic materials adapted to attract each other.

5. The new material bevel gear tooth surface runout replacement tester according to claim 1 is characterized in that: A concave cavity (46) is provided on one side of the first trigger member (4) corresponding to the second trigger member (5), and a plurality of second springs (53) are provided outwardly on the other side of the first trigger member (4). The other ends of the second springs (53) are connected to the active push plate (52), and the second trigger member (5) and the active push plate (52) are fixedly connected via a second connecting rod (51).

6. The new material bevel gear tooth surface runout replacement tester according to claim 1 is characterized in that: A connected top cavity (64) is provided on the top seat (6) above the fixed cavity (62), one end of the top rod (8) extends into the top seat (6) and a top piece (83) is provided corresponding to the top cavity (64); A movable cavity (81) is provided at the bottom of the other end of the top rod (8), and the movable rod (82) is adapted to be located in the movable cavity (81) and to move laterally. A plurality of guide members (811) are fixedly provided in the movable cavity (81), and corresponding guide members (811) on the movable rod (82) are adapted to be provided with guide grooves (821).

7. The alternative gauge for measuring tooth surface runout of a new material bevel gear according to claim 6, characterized in that: A support plate (34) is fixedly provided on the top of the fixed seat (3), and a vertical cavity (341) is adapted to be opened on the support plate (34) corresponding to the top rod (8) and the movable rod (82), and the top rod (8) is located in the top cavity (64) and the vertical cavity (341) and moves vertically; A fixed plate (44) is fixedly provided on the first trigger member (4), and a corresponding movable rod (82) on the fixed plate (44) and the active push plate (52) are adapted to be provided with a support groove (822), and a push-back plate (45) is adapted to be provided on the first trigger member (4) corresponding to the movable rod (82).

8. The new material bevel gear tooth surface runout replacement test fixture according to claim 1 is characterized in that: A transverse plate (73) is fixedly provided on the pressure plate (7), a movable frame (741) is movably provided on the transverse plate (73), a plurality of fixed columns (742) are fixedly provided inside the movable frame (741), through holes are adapted to be opened corresponding to the fixed columns (742) on the transverse plate (73), and a cushion block (74) is fixedly provided on the top of the movable frame (741).

9. The new material bevel gear tooth surface runout replacement tester according to claim 1 is characterized in that: The top seat (6) is provided with a clamping cavity (63) on both sides of the fixed cavity (62), and a plurality of third springs (630) are provided outwardly in the clamping cavity (63), and the other ends of the third springs (630) are connected to the clamping pieces (631); Both sides of the bottom of the top seat (6) are fixed downwardly with upright posts (61), and the pressing plate (7) is guided and moved by the upright posts (61).

10. A method for detecting tooth surface runout of a bevel gear made of a new material by using an alternative inspection tool according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: placing the workpiece on the tooth die body (22) and making the tooth surfaces of the two pieces mesh with each other; S2: The tooth mold body (22) is translated to the bottom of the dial indicator body (11), and the first trigger member (4) and the second trigger member (5) are pushed inward through the tooth mold body (22), and then the pressure plate (7) automatically falls down, and the limiting column (71) is automatically locked into the limiting cavity (20) to achieve the fixation of the tooth mold body (22); S3: Adjust the dial indicator body (11) so that the needle of the dial indicator body (11) contacts the mounting surface of the workpiece, and then set the dial indicator to zero; S4: Rotate the tooth die body (22) one circle, and the workpiece rotates accordingly, and observe the change in the reading of the dial indicator body (11) during the rotation, that is, the runout value of the gear mounting surface; S5: The pressing plate (7) is lifted upwards, at which time the limiting column (71) is automatically released from the limiting cavity (20), and the tooth die body (22) is pushed outwards through the first trigger member (4) and the second trigger member (5); S6: Take out the workpiece and rotate it randomly, then place the toothed part on the tooth die body (22) again, and make the tooth surfaces of the two parts mesh with each other. Then repeat the actions of S2, S3, S4, and S5 in sequence, and observe the change in the dial indicator reading after the tooth change, that is, the runout value of the gear mounting surface after the tooth change; S7: Finally, the user takes out the workpiece and takes another workpiece, and repeats S1, S2, S3, S4, S5, and S6 in sequence.

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