Thrust testing device

Abstract

The utility model relates to the technical field of thrust detection, in particular to a thrust testing device which comprises a base, and a guide mechanism, a thrust meter and a telescopic mechanism are arranged on the base. The guide mechanism is slidably connected with a fixing assembly and a positioning assembly, and the fixing assembly is used for fixing a to-be-detected workpiece; the workpiece to be detected is provided with an assembly hole matched with the pin shaft to be detected; the positioning assembly is located between the fixing assembly and the thrust meter and used for ensuring that the axis of the pin shaft to be detected and the axis of the assembly hole are located on the same straight line. An ejector rod matched with a pin shaft to be detected is fixed on a probe of the thrust meter; the telescopic mechanism is used for driving the fixing assembly to move along the guide mechanism and enabling the to-be-detected pin shaft to abut against the ejector rod; the thrust meter is used for reading the thrust value of the pin shaft to be detected in the process of being inserted into or separated from the assembly hole. According to the invention, the axis of the to-be-detected pin shaft and the axis of the to-be-detected workpiece assembly hole are located on the same horizontal line in the thrust test process, and the accuracy of thrust detection is improved.

Description

Technical Field

[0001] This application relates to the technical field of thrust detection, and in particular to a thrust testing device. Background Technology

[0002] In fields such as machinery manufacturing and parts inspection, testing the assembly performance of parts is a crucial step in ensuring product quality and reliability. With the continuous development of industrial production, the requirements for the assembly quality of parts are becoming increasingly stringent, especially regarding the strict standards for parameters such as the fit accuracy between small components like pins and the assembly holes of the workpiece under inspection, and the thrust during insertion and disengagement. Accurately measuring these parameters helps to promptly detect errors in the parts manufacturing process, avoiding equipment failures and safety hazards caused by assembly problems, and is of great significance for improving production efficiency and reducing costs.

[0003] In traditional testing of the thrust of a pin and its mounting hole, a common practice is to use simple tooling fixtures to assist in the operation. However, these tooling fixtures cannot guarantee that the axes of the pin and the mounting hole are in the same straight line, which can easily cause deviations in the measurement results and make it difficult to achieve accurate measurement. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this application provides a thrust testing device that ensures that the axis of the pin and the assembly hole of the workpiece to be tested are on the same horizontal line during the thrust testing process, thereby improving the accuracy of thrust testing.

[0005] This application is achieved through the following technical solution:

[0006] A thrust testing device includes a base, on which a guide mechanism, a thrust gauge, and a telescopic mechanism are mounted. A fixing component and a positioning component are slidably connected to the guide mechanism. The fixing component is used to fix the workpiece to be tested. The workpiece to be tested has an assembly hole adapted to a pin to be tested. The positioning component is located between the fixing component and the thrust gauge to ensure that the axis of the pin to be tested and the axis of the assembly hole are collinear. A push rod adapted to the pin to be tested is fixed to the probe of the thrust gauge. The telescopic mechanism drives the fixing component to move along the guide mechanism, causing the pin to be tested to abut against the push rod, thereby driving the pin to be tested to insert into or disengage from the assembly hole. The thrust gauge is used to read the thrust value of the pin to be tested during insertion into or disengagement from the assembly hole.

[0007] By adopting the above technical solution, the fixing component and the positioning component are slidably connected to the guide mechanism, which can ensure that under the action of the telescopic mechanism, the fixing component can drive the positioning component to slide on the guide mechanism, so that the fixed pin in the positioning component can abut against the push rod of the thrust gauge, driving the pin to be tested to insert into or disengage from the assembly hole; by setting the positioning component between the fixing component and the thrust gauge, the position of the pin to be tested can be positioned so that the axis of the pin to be tested and the axis of the assembly hole are on the same straight line, thereby improving the accuracy of the thrust measured by the thrust gauge.

[0008] Optionally, the guiding mechanism includes parallel sliding rods.

[0009] By adopting the above technical solution, the parallel sliding rods can provide stable support for the fixed component and the positioning component during the sliding process, improve the stability of the workpiece to be tested when it moves, and at the same time, ensure that the fixed component and the positioning component can slide along the set track, and ensure that the pin to be tested can abut against the push rod of the thrust gauge.

[0010] Optionally, the positioning component includes a positioning tube, which is slidably connected to the slide rod via an annular buckle, and the positioning tube is provided with an adaptive mechanism capable of fixing pins of different diameters to be tested.

[0011] By adopting the above technical solution, the ring buckle allows the positioning tube to slide on the slide bar, which facilitates the adjustment of the positioning tube position and ensures that the positioning tube can move synchronously with the fixing component; the adaptive mechanism in the positioning tube can fix the pin shaft to be tested with different diameters, ensuring that the pin shaft to be tested and the axis of the assembly hole are on the same straight line. At the same time, in conjunction with the fixing component, guide mechanism, thrust gauge and telescopic mechanism, the thrust value during the insertion or removal of the pin shaft to be tested from the assembly hole can be accurately read.

[0012] Optionally, the adaptive mechanism includes an elastic element, a hinge seat, and a sleeve slidably connected in the positioning tube; the inner wall of the positioning tube is circumferentially distributed with hinge seats; at least three hinge seats are arranged, and an adjusting rod is hinged to the hinge seat, the deflection end of the adjusting rod is rotatably connected to a roller; the positioning tube is provided with an abutment ring for supporting the elastic element, the elastic element is placed between the abutment ring and the sleeve, and is used to provide a restoring elastic force for the sleeve to drive the sleeve to abut the adjusting rod, so as to drive the roller to clamp the pin to be tested, so that the pin to be tested and the axis of the assembly hole are on the same straight line.

[0013] By adopting the above technical solution, at least three hinge seats are arranged on the inner wall of the positioning tube, which can ensure that the hinge seats can provide stable support for the pin and prevent the pin from shifting during the test. The adjusting rod hinged on the hinge seat can realize the synchronous movement of the roller, ensuring that the axis of the pin to be tested and the assembly hole are on the same straight line. In addition, the adjusting rod can adapt to pins of different diameters by adjusting its own rotation angle. When the pin to be tested is in the adaptive mechanism, the elastic element can provide the sleeve with expansion and contraction space and reset elasticity, so that the roller can abut against the pin to be tested.

[0014] Optionally, at least two adaptive mechanisms may be provided in the positioning tube.

[0015] By adopting the above technical solution, at least two adaptive mechanisms can improve the positioning accuracy and stability of the pin to be tested, prevent the axis of the pin from shifting during the test, and improve the accuracy of the thrust value measurement when the pin to be tested is inserted into or removed from the assembly hole.

[0016] Optionally, a rotating wheel is rotatably connected at the contact point between the sleeve and the adjusting rod.

[0017] By adopting the above technical solution, when the adjusting rod rotates, the rotating wheel connected to the sleeve at the contact point of the adjusting rod can reduce the friction between the adjusting rod and the sleeve, making it easier for the sleeve to slide in the positioning tube.

[0018] Optionally, the telescopic mechanism includes a bearing housing fixed on the base, a lead screw rotatably connected in the bearing housing, and a threaded hole adapted to the lead screw on the fixing assembly.

[0019] By adopting the above technical solution, the bearing housing can reduce the friction generated during the sliding of the lead screw; the lead screw can cooperate with the threaded hole on the fixed component, control the fixed component to move along the guide mechanism, drive the pin to be tested in the positioning component to abut against the push rod of the thrust gauge, realize the insertion or disengagement of the pin to be tested into the assembly hole, and ensure the accuracy and stability of the movement during the thrust test.

[0020] Optionally, the lead screw is powered by a drive motor to rotate.

[0021] By adopting the above technical solution, the drive motor can provide a stable driving force for the lead screw, enabling the fixed component and the positioning component to slide stably along the guide mechanism, thereby improving the accuracy of the measurement results.

[0022] Optionally, the fixing component includes a slide block slidably connected to the guide mechanism, and the slide block is provided with a fixing seat for fixing the workpiece to be inspected, and the threaded hole is provided on the slide block.

[0023] By adopting the above technical solution, the slide block is slidably connected to the guide mechanism, and the slide block is provided with a threaded hole to ensure that the lead screw can drive the slide block to slide on the guide mechanism, so as to realize the contact between the pin to be tested and the push rod; the fixed seat provided on the slide block can fix the workpiece to be tested, ensuring that the workpiece to be tested does not shift during the test.

[0024] Optionally, the base is provided with a "U"-shaped slot for fixing the thrust gauge, and a rubber pad is provided between the slot and the thrust gauge.

[0025] By adopting the above technical solution, the "U"-shaped slot can fix the thrust gauge, and the rubber pad between the slot and the thrust gauge can play a buffering and shock-absorbing role, protecting the thrust gauge from vibration damage and improving the working stability and measurement accuracy of the thrust gauge.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By setting a positioning component on the base, this application can meet the testing requirements of pins of different diameters, and provide stable support force for the pins during the test, ensuring that the axis of the pin to be tested and the axis of the assembly hole are on the same straight line and that no displacement occurs during the test.

[0028] 2. The telescopic mechanism of this application drives the fixed component to move along the guide mechanism, so as to realize that the pin to be tested abuts against the top rod and is inserted into or disengaged from the assembly hole;

[0029] 3. This application can directly read the thrust value of the pin to be tested during the insertion or disengagement process of the pin into the assembly hole, and detect whether the pin meets the requirements based on the change in thrust value. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the thrust testing device described in Embodiment 1;

[0031] Figure 2 This is a top view of the thrust testing device described in Embodiment 1;

[0032] Figure 3 This is a partially enlarged structural schematic diagram of the thrust testing device described in Embodiment 1.

[0033] Figure 4 This is a schematic diagram of the positioning device structure described in Embodiment 1;

[0034] Figure 5 This is a schematic diagram of the cross-sectional structure of the positioning device described in Embodiment 1;

[0035] Figure 6 This is a schematic diagram of the thrust testing device structure described in Embodiment 2;

[0036] Figure 7 This is a cross-sectional structural diagram of the positioning device described in Embodiment 2.

[0037] In the diagram: 1. Base; 2. Guide mechanism; 21. Slide rod; 3. Telescopic mechanism; 31. Bearing seat; 32. Handwheel; 33. Lead screw; 34. Drive motor; 35. Motor seat; 4. Fixing assembly; 41. Slide; 42. Fixing seat; 5. Workpiece to be inspected; 51. Assembly hole; 6. Positioning assembly; 61. Positioning tube; 62. Ring buckle; 63. Adaptive mechanism; 631. Elastic element; 632. Hinge seat; 633. Adjusting rod; 634. Abutment ring; 635. Sleeve; 636. Roller; 637. Rotating wheel; 7. Thrust gauge; 71. Push rod; 8. Pin to be inspected; 9. Slot; 10. Rubber pad. Detailed Implementation

[0038] The technical solutions of various embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] Example 1

[0040] Reference Figures 1-3 This application discloses a thrust testing device, including a base 1, on which a guide mechanism 2, a thrust gauge 7, and a telescopic mechanism 3 are provided; a fixing component 4 and a positioning component 6 are slidably connected on the guide mechanism 2, the fixing component 4 being used to fix the workpiece 5 to be tested; the workpiece 5 to be tested has an assembly hole 51 adapted to the pin 8 to be tested; the positioning component 6 is located between the fixing component 4 and the thrust gauge 7, and is used to ensure that the axis of the pin 8 to be tested and the axis of the assembly hole 51 are on the same straight line; a push rod 71 adapted to the pin 8 to be tested is fixed on the probe of the thrust gauge 7; the telescopic mechanism 3 is used to drive the fixing component 4 to move along the guide mechanism 2, and to make the pin 8 to be tested abut against the push rod 71, thereby driving the pin 8 to be tested to insert into or disengage from the assembly hole 51; the thrust gauge 7 is used to read the thrust value of the pin 8 to be tested during the process of inserting into or disengaging from the assembly hole 51.

[0041] Specifically, refer to Figures 1-3The guiding mechanism 2 includes parallel sliding rods 21. The sliding rods 21 are generally made of high-strength metal with a smooth surface to reduce friction. The fixing component 4 includes a sliding seat 41, which is slidably connected to the sliding rods 21 of the guiding mechanism 2. The sliding seat 41 is typically a block structure with through holes adapted to the sliding rods 21, and is made of lightweight and sufficiently strong aluminum alloy. A fixing seat 42 for fixing the workpiece 5 to be inspected is bolted to the sliding seat 41, and the sliding seat 41 also has threaded holes adapted to the lead screw 33. The telescopic mechanism 3 is driven by a drive motor 34, which and the lead screw 33 are fixed to a motor base 35 through threaded holes. The drive motor 34 can be a stepper motor, capable of controlling the rotation speed of the lead screw 33. The base 1 has a U-shaped slot 9 for fixing the thrust gauge 7. The slot 9 is made of aluminum alloy, and a rubber pad 10 is provided between the slot 9 and the thrust gauge 7. The rubber pad 10 serves as a buffer and shock absorber, preventing vibration from affecting the measurement results of the thrust gauge 7. A push rod 71, compatible with the pin 8 to be tested, is fixed to the probe of the thrust gauge 7. The push rod 71 and the thrust gauge 7 are detachably connected, facilitating the replacement of the push rod 71 and improving the applicability of the device.

[0042] Reference Figures 4-5 The positioning component 6 includes a positioning tube 61, which is slidably connected to the slide rod 21 via an annular buckle 62. The annular buckle 62 can be made of plastic or metal. The positioning component 6 is located between the fixing component 4 and the thrust gauge 7, ensuring that during the thrust test, the positioning component 6 is compressed by the fixing component 4 and the thrust gauge 7 and fixed to the slide rod 21. The positioning tube 61 has a cylindrical structure and is hollow inside. The positioning tube 61 is equipped with an adaptive mechanism 63 that can fix the test pins 8 of different diameters.

[0043] Reference Figures 4-5The adaptive mechanism 63 includes a sleeve 635, an elastic element 631, and a hinge seat 632. Hinges 632 are evenly distributed circumferentially on the inner wall of the positioning tube 61, with at least three hinge seats 632. An adjusting rod 633 is hinged to each hinge seat 632, and a roller 636 is rotatably connected to the deflection end of the adjusting rod 633. The roller 636 is typically made of rubber, possessing elasticity and friction to better clamp the pin 8 to be tested. A groove 9 is provided in the positioning tube 61, and a retaining ring 634 is engaged in the groove 9 to support the elastic element 631. The elastic element 631 is positioned between the retaining ring 634 and the sleeve 635 to provide a restoring force to the sleeve 635, driving the roller 636 to clamp the pin 8 to be tested, ensuring that the pin 8 to be tested is aligned with the axis of the mounting hole 51. The elastic element 631 can be a spring. When the pin 8 to be tested is inserted into the positioning tube 61, it will push the sleeve 635 to compress the spring. The spring will exert a thrust on the sleeve 635, so that the roller 636 in the sleeve 635 can clamp the pin 8 to be tested. At least two adaptive mechanisms 63 can be coaxially arranged in the positioning tube 61. The two adaptive mechanisms 63 are engaged together to ensure the coaxiality of the pin 8 to be tested.

[0044] The implementation principle of this embodiment is as follows: This thrust testing device, by setting a positioning component 6, ensures that the axis of the pin to be tested 8 and the assembly hole 51 are on the same straight line, thereby improving the accuracy of the thrust test results. After the pin to be tested 8 is placed into the positioning component 6, the pin to be tested 8 pushes the adjusting rod 633 to rotate. The adjusting rod 633 pushes the sleeve 635 to compress the spring. The spring's restoring force causes the roller 636 to clamp the pin to be tested 8, ensuring that the axis of the pin to be tested 8 and the assembly hole 51 are on the same straight line during the test. At least two adaptive mechanisms 63 can ensure that the axis of the pin to be tested 8 does not deviate during the test. The drive motor 34 can drive the lead screw 33 to push the slide 41 to move on the parallel slide rod 21, ensuring that the pin to be tested 8 abuts against the top rod 71 of the thrust gauge 7, thereby pushing the pin to be tested 8 to insert or disengage from the assembly hole 51. The thrust gauge 7 can then read the thrust value during the insertion or disengagement of the pin to be tested 8 from the assembly hole 51.

[0045] Example 2

[0046] refer to Figures 6-7 The difference between this embodiment and Embodiment 1 is that in this embodiment, the lead screw 33 is driven by a handwheel 32 connected to the bearing seat 31. The handwheel 32 and the lead screw 33 are rotatably connected to the bearing seat 31 through a threaded hole on the bearing seat 31. Rotating the handwheel 32 drives the lead screw 33 to rotate. The lead screw 33 engages with the threaded hole on the slide block 41, causing the slide block 41 to move along the slide rod 21. A rotating wheel 637 is rotatably connected at the contact point between the sleeve 635 and the adjusting rod 633, which can reduce the friction between the adjusting rod 633 and the sleeve 635 during rotation.

[0047] The implementation principle of this embodiment is as follows: The bearing seat 31 is provided with a threaded hole connecting the handwheel 32 and the lead screw 33. Rotating the handwheel 32 drives the lead screw 33 to rotate, so that the slide 41 connected to the lead screw 33 moves on the slide rod 21. During the process of the pin to be tested 8 being placed into the adaptive mechanism 63, the pin to be tested 8 pushes the roller 636 to roll, thereby driving the adjusting rod 633 to rotate, pushing the sleeve 635 to slide in the positioning tube 61. The rotating wheel 637 rotatably connected at the contact point between the sleeve 635 and the adjusting rod 633 can reduce the friction between the sleeve 635 and the adjusting rod 633, making it easier for the sleeve 635 to slide in the positioning tube 61.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of this application.

Claims

1. A thrust test device, characterized by, The system includes a base (1), on which a guide mechanism (2), a thrust gauge (7), and a telescopic mechanism (3) are provided; a fixing component (4) and a positioning component (6) are slidably connected on the guide mechanism (2), the fixing component (4) being used to fix the workpiece to be tested (5); the workpiece to be tested (5) is provided with an assembly hole (51) adapted to the pin (8) to be tested; the positioning component (6) is located between the fixing component (4) and the thrust gauge (7) and is used to ensure that the pin (8) to be tested is properly aligned with the assembly hole (51). The axes of the holes (51) are on the same straight line; a push rod (71) adapted to the pin (8) to be tested is fixed on the probe of the thrust gauge (7); the telescopic mechanism (3) is used to drive the fixing component (4) to move along the guide mechanism (2) and make the pin (8) to be tested abut against the push rod (71), thereby driving the pin (8) to be tested to be inserted into or disengage from the assembly hole (51); the thrust gauge (7) is used to read the thrust value of the pin (8) to be tested during the process of inserting into or disengaging from the assembly hole (51).

2. A thrust test apparatus according to claim 1, wherein The guide mechanism (2) includes parallel sliding rods (21).

3. A thrust test apparatus according to claim 2, wherein The positioning component (6) includes a positioning tube (61), which is slidably connected to the slide rod (21) by a ring buckle (62). The positioning tube (61) is provided with an adaptive mechanism (63) that can fix pins (8) of different diameters to be tested.

4. A thrust test apparatus according to claim 3, wherein The adaptive mechanism (63) includes an elastic element (631), a hinge seat (632), and a sleeve (635) slidably connected in the positioning tube (61); the inner wall of the positioning tube (61) is circumferentially distributed with hinge seats (632); at least three hinge seats (632) are arranged, and an adjusting rod (633) is hinged to the hinge seat (632), and a roller (636) is rotatably connected to the deflection end of the adjusting rod (633); the positioning tube (61) is provided with an abutment ring (634) for supporting the elastic element (631). The elastic element (631) is placed between the abutment ring (634) and the sleeve (635) to provide a reset elastic force for the sleeve (635) to drive the sleeve (635) to abut the adjusting rod (633) to drive the roller (636) to clamp the pin (8) to be tested, so that the pin (8) to be tested and the axis of the assembly hole (51) are on the same straight line.

5. A thrust test apparatus according to claim 4, wherein At least two adaptive mechanisms (63) are provided in the positioning tube (61).

6. A thrust test apparatus according to claim 4, wherein A rotating wheel (637) is rotatably connected at the contact point between the sleeve (635) and the adjusting rod (633).

7. The thrust test apparatus of claim 1, wherein The telescopic mechanism (3) includes a bearing seat (31) fixed on the base (1), a lead screw (33) is rotatably connected in the bearing seat (31), and the fixing component (4) is provided with a threaded hole that matches the lead screw (33).

8. A thrust test apparatus according to claim 7, wherein The lead screw (33) is powered by a drive motor (34) to rotate.

9. A thrust test apparatus according to claim 7, wherein The fixing component (4) includes a slide (41), which is slidably connected to the guide mechanism (2), and the slide (41) is provided with a fixing seat (42) for fixing the workpiece (5) to be inspected, and the threaded hole is provided on the slide (41).

10. The thrust test apparatus of claim 1, wherein, The base (1) is provided with a "U"-shaped slot (9) for fixing the thrust gauge (7), and a rubber pad (10) is provided between the slot (9) and the thrust gauge (7).

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