Online detection device for profile tolerance and center height of support surface of valve rocker assembly

Abstract

The invention discloses an on-line detection device for the profile tolerance and the center height of a support surface of a valve rocker assembly, which is used for manufacturing automobile parts. Workpiece positioning seats are arranged on two sides of the bottom plate; three measuring rod guide supports are respectively fixed on the outer sides of the workpiece positioning seats and in the middle of the bottom plate; guide rods of the measuring rod I and the measuring rod III on the two sides of the bottom plate are in sliding fit with guide holes of the measuring rod guide support, one end of each guide rod is provided with a measuring handle, a measuring go-end cylinder and a measuring no-go-end cylinder are combined into an integrated stepped shaft structure and are arranged at the other end of the guide rod, and the measuring go-end cylinder is located on the outer side of the measuring no-go-end cylinder. Limiting blocks are arranged on the outer sides of the measuring rod guide supports located on the two sides of the bottom plate, the measuring rod II in the middle of the bottom plate is provided with no limiting block, and the tops of the three measuring rod guide supports are respectively provided with a gauge stand. The device can be used for on-line rapid detection of the profile tolerance and the center height of the rocker arm assembly support surface, effectively guarantees the workpiece measurement precision, is convenient and simple to use, can overcome the limitation of on-line detection, and can improve the product manufacturing quality and the detection efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts manufacturing, in particular to a special rapid online detection device for detecting the contour degree and center height of a valve rocker arm assembly support surface. Background Art

[0002] In the processing and production of valve rocker arm assembly supports, many functional assembly structures are arc-shaped surfaces, and their surface contour and center high precision requirements are high. In addition, they are three-dimensional structures, and their precision directly affects the installation accuracy of the valve rocker arm assembly. Online rapid detection is necessary to ensure online quality judgment and efficient production. In the existing technology, universal methods such as three-coordinate, flash tester, and profiler are generally used for detection. The investment in detection equipment is large, and highly skilled detection personnel are required for detection. The efficiency is low, and full detection cannot be achieved, which is inconvenient for online detection and control in production. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide an online detection device for the surface contour and center height of a valve rocker arm assembly support, so as to realize online detection of the support by the detection device.

[0004] In order to achieve the above-mentioned purpose of the invention, workpiece positioning seats are installed on both sides of the base plate of the online detection device of the present invention, three measuring rod guide supports are respectively fixed on the outer side of the workpiece positioning seat and the middle part of the base plate, measuring rod I, measuring rod II, and measuring rod III are respectively connected to the three measuring rod guide supports, and the tops of the three measuring rod guide supports are respectively equipped with table frames.

[0005] Furthermore, the guide rods of the measuring rods I and III on both sides of the base plate are slidably matched with the guide holes of the measuring rod guide supports, a measuring handle is provided at one end of the guide rod, the measuring through-end cylinder and the measuring stop-end cylinder are combined into an integrated stepped shaft structure, which is installed at the other end of the guide rod, the measuring through-end cylinder is located on the outside of the measuring stop-end cylinder, and limit blocks for limiting the axial movement limit position of the measuring handle are provided on the outside of the measuring rod guide supports on both sides of the base plate.

[0006] Furthermore, one end of the guide rod of the measuring rod II in the middle of the base plate is slidably matched with the guide hole of the measuring rod guide support, and the other end of the guide rod is provided with a measuring handle. The measuring through-end cylinder and the measuring stop-end cylinder are combined into an integrated stepped shaft mounted on the guide rod, the measuring stop-end cylinder is located on one side of the measuring handle, and the measuring through-end cylinder is located on the side away from the measuring handle.

[0007] Furthermore, the workpiece locating seat is equipped with an auxiliary locating pin that is compatible with the reference hole of the valve rocker arm assembly support; the upper plane of the workpiece locating seat is compatible with the bottom reference surface of the valve rocker arm assembly support; and two auxiliary supports that are compatible with the bottom reference surface of the valve rocker arm assembly support are installed between the two workpiece locating seats.

[0008] Furthermore, one end of the meter frame is connected to the measuring rod guide support through a rotating axis, the meter frame can rotate around the rotating axis, and a dial indicator is installed on the other end of the meter frame. The telescopic rod of the dial indicator is provided with scale markings, fine-tuning locking bolts, and a dial indicator measuring handle for convenient control of position adjustment; when measuring the center height deviation of the support, the dial indicator measuring contacts are located above arc surface one, arc surface two, arc surface three, and arc surface four.

[0009] Furthermore, a measuring rod protective cover is placed on the bottom plate.

[0010] Furthermore, a support center high standard block is placed on the bottom plate.

[0011] Compared with the prior art, the present invention can be used for rapid online detection of the surface contour and center height of the support of the valve rocker arm assembly of the automobile engine, effectively ensuring the measurement accuracy of the workpiece, and is easy and simple to use. It solves the problem of excessive investment costs such as the need to use special detection equipment and full-time skilled personnel in the prior art, avoids dependence on highly skilled operators during the processing process, overcomes the limitations of online detection, and is beneficial to improving the contour and center height control of the arc surface structure of the support assembly, which can improve product manufacturing quality and detection efficiency and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention.

[0013] Figure 2 for Figure 1 Schematic diagram of the dial indicator and its stand structure.

[0014] Figure 3 for Figure 1 Schematic diagram of the structure of the valve rocker arm assembly support.

[0015] In the figure: 1. Measuring handle; 2. Limit block; 3. Measuring rod guide support; 4. Guide rod; 5. Measuring through-end cylinder; 6. Measuring stop-end cylinder; 7. Workpiece positioning seat; 8. Auxiliary support; 9. Auxiliary positioning pin; 10. Measuring rod protective cover; 11. Bottom plate; 12. Dial indicator; 13. Arc surface one; 14. Arc surface two; 15. Arc surface three; 16. Arc surface four; 17. Bottom reference surface; 18. Valve rocker arm assembly support; 19. Fine-tuning locking bolt; 20. Meter stand; 21. Rotating axis; 22. Dial indicator measuring contact; 23. Telescopic rod; 24. Dial indicator measuring handle; 25. Support center height standard block. DETAILED DESCRIPTION

[0016] like Figure 1 , Figure 2 and Figure 3 As shown, the bottom plate 11 of the online detection device of the present invention is provided with workpiece positioning seats 7 on both sides, and three measuring rod guide supports 3 are respectively fixed on the outer side of the workpiece positioning seat 7 and the middle part of the bottom plate 11; the table frame 20, measuring rods I, II and III are respectively connected to the three measuring rod guide supports 3, wherein the guide rods 4 of measuring rods I and III can rotate and move axially in the guide holes of the measuring rod guide supports 3, but cannot be pulled out; the guide rod 4 of measuring rod II can rotate and move axially in the guide holes of the measuring rod guide supports 3 and can be pulled out; measuring rods I and III are respectively used for detecting the surface profile of the arc surface 13 and the arc surface 4 16 of the valve rocker arm assembly support 18, and measuring rod II needs to be pulled out after completing the surface profile detection of the arc surface 2 14, and then re-insert the guide hole from the other side of the measuring rod guide support 3 to detect the surface profile of the arc surface 3 15. A support center height standard block 25 is placed on the bottom plate 11.

[0017] The guide rods 4 of the measuring rods I and III on both sides of the base plate 11 are slidably matched with the guide holes of the measuring rod guide supports 3. A measuring handle 1 is installed at one end of the guide rod 4. The measuring through-end cylinder 5 and the measuring stop-end cylinder 6 are combined into an integrated stepped shaft structure and installed at the other end of the guide rod 4. The measuring through-end cylinder 5 is located on the outside of the measuring stop-end cylinder 6. Limit blocks 2 for limiting the axial movement limit position of the measuring handle 1 are provided on the outside of the measuring rod guide supports 3 on both sides of the base plate 11.

[0018] One end of the guide rod 4 of the measuring rod II in the middle of the base plate 11 is slidably matched with the guide hole of the measuring rod guide support 3, and the other end of the guide rod 4 is equipped with a measuring handle 1. The measuring through-end cylinder 5 and the measuring stop-end cylinder 6 are combined into an integrated stepped shaft mounted on the guide rod 4. The measuring stop-end cylinder 6 is located on one side of the measuring handle 1, and the measuring through-end cylinder 5 is located on the side away from the measuring handle 1.

[0019] One end of the meter frame 20 is connected to the measuring rod guide support 3 through the rotating shaft 21, and the meter frame 20 can rotate around the rotating shaft 21; the telescopic rod 23 of the dial gauge 12 is provided with a scale mark, a fine-tuning locking bolt 19, and a dial gauge measuring handle 24 for convenient control of position adjustment; after the three dial gauges 12 are zeroed on the center height standard block 25 of the support, the telescopic rod 23 is tightened on the dial gauge 12 through the fine-tuning locking bolt 19. At this time, the scale on the telescopic rod 23 corresponds to the contact surface of the measuring rod guide support 3. The scale mark provided on the telescopic rod 23 can facilitate the installation and adjustment of the upper and lower positions of the telescopic rod 23 due to the loosening of the fine-tuning locking bolt 19 after the dial gauge 12 is used for a long time; and then the three dial gauges 12 are respectively installed on the other end of the meter frame 20. When measuring the center height deviation of the support, the dial gauge measuring contact 22 is located above the arc surface 13, the arc surface 2, the arc surface 3, and the arc surface 4. 16.

[0020] An auxiliary positioning pin 9 matched with the reference hole of the valve rocker arm assembly support 18 is installed on the workpiece positioning seat 7, and the upper plane of the workpiece positioning seat 7 is matched with the bottom reference surface 17 of the valve rocker arm assembly support 18. Two auxiliary supports 8 matched with the bottom reference surface 17 of the valve rocker arm assembly support 18 are installed between the two workpiece positioning seats 7; the valve rocker arm assembly support 18 can be accurately positioned by the workpiece positioning seat 7 and the bottom reference surface 17 and the auxiliary positioning pin 9, and the valve rocker arm assembly support 18 can be auxiliary positioned by relying on the bottom reference surface 17 and the two auxiliary supports 8; a plurality of holes are provided in the auxiliary support 8 to reduce the weight of the device and facilitate movement and operation; a measuring rod protective cover 10 is placed on the bottom plate 11, wherein the measuring rod II needs to be taken out and inserted into the measuring rod protective cover 10 after the measurement is completed.

[0021] When testing the contours of each surface of the valve rocker arm assembly support 18, it is only necessary to place the valve rocker arm assembly support 18 on the workpiece positioning seat 7, and rely on the bottom reference surface 17, auxiliary reference holes and auxiliary positioning pins 9 of the valve rocker arm assembly support 18 to achieve positioning, and then push in measuring rods I, II and III in turn, so that the measuring through-end cylinder 5 of the measuring rods can easily pass through the arc-shaped surface structure to be measured, and then continue to push the measuring rods so that the measuring end cylinder 6 cannot be pushed into the arc-shaped surface structure to be measured. At this time, it can be determined that the surface contour of the valve rocker arm assembly support 18 is qualified.

[0022] After the surface profile test is completed, the measuring rods I and III are pulled outwards respectively, and the measuring rod II is pulled out, so that the measuring through-end cylinder 5 and the measuring end cylinder 6 of each measuring rod leave the arc surface 1 13, the arc surface 2 14, the arc surface 3 15, and the arc surface 4 16. Then the table frame 20 is rotated to make the dial gauge measuring head 22 contact the lowest point of each measuring arc surface, and the dial gauge measuring head 22 is slightly moved along the arc direction of the arc surface 13, the arc surface 2 14, the arc surface 3 15, and the arc surface 4 16. The measurement of the center height deviation of the arc surface and the judgment of whether it is qualified or not can be completed through the indication of the dial gauge 12. Among them, the middle dial gauge 12 needs to be rotated 180 degrees after detecting the center height deviation of the arc surface 2 14, and then detect the center height deviation of the arc surface 3 15.

Claims

1. An online detection device for the profile and center height of a valve rocker arm assembly support surface, characterized in that: The bottom plate (11) of the online detection device is provided with workpiece positioning seats (7) on both sides, three measuring rod guide supports (3) are respectively fixed on the outer side of the workpiece positioning seats (7) and the middle part of the bottom plate (11), measuring rods I, II and III are respectively connected to the three measuring rod guide supports (3), and the tops of the three measuring rod guide supports (3) are respectively provided with table frames (20).

2. The on-line detection device for the profile and center height of the valve rocker arm assembly support surface according to claim 1, characterized in that: The guide rods (4) of the measuring rods I and III on both sides of the base plate (11) are slidably matched with the guide holes of the measuring rod guide support (3); a measuring handle (1) is mounted on one end of the guide rod (4); a measuring through-end cylinder (5) and a measuring stop-end cylinder (6) are combined into an integrated stepped shaft structure and mounted on the other end of the guide rod (4); the measuring through-end cylinder (5) is located outside the measuring stop-end cylinder (6); and a limit block (2) for limiting the axial movement limit position of the measuring handle (1) is provided outside the measuring rod guide support (3) on both sides of the base plate (11).

3. The online detection device for the profile and center height of the valve rocker arm assembly support surface according to claim 1, characterized in that: One end of the guide rod (4) of the measuring rod II in the middle of the base plate (11) is slidably matched with the guide hole of the measuring rod guide support (3), and the other end of the guide rod (4) is equipped with a measuring handle (1). The measuring through-end cylinder (5) and the measuring stop-end cylinder (6) are combined into an integrated stepped shaft and mounted on the guide rod (4). The measuring stop-end cylinder (6) is located on one side of the measuring handle (1), and the measuring through-end cylinder (5) is located on a side away from the measuring handle (1).

4. The on-line detection device for the profile and center height of the valve rocker arm assembly support surface according to claim 1, characterized in that: The workpiece positioning seat (7) is provided with an auxiliary positioning pin (9) matched with a reference hole of a valve rocker arm assembly support (18); an upper plane of the workpiece positioning seat (7) is matched with a bottom reference surface (17) of the valve rocker arm assembly support (18); and two auxiliary supports (8) matched with the bottom reference surface (17) of the valve rocker arm assembly support (18) are provided between the two workpiece positioning seats (7).

5. The on-line detection device for the profile and center height of the valve rocker arm assembly support surface according to claim 1, characterized in that: One end of the meter frame (20) is connected to the measuring rod guide support (3) via a rotating shaft (21), and the meter frame (20) can rotate around the rotating shaft (21). A dial indicator (12) is installed at the other end of the meter frame (20). A scale mark for convenient position adjustment, a fine-tuning locking bolt (19), and a dial indicator measuring handle (24) are provided on the telescopic rod (23) of the dial indicator (12); when measuring the center height deviation of the support, the dial indicator measuring contact (22) is located above the arc surface 1 (13), the arc surface 2 (14), the arc surface 3 (15), and the arc surface 4 (16).

6. The on-line detection device for the profile and center height of the valve rocker arm assembly support surface according to claim 1, characterized in that: A measuring rod protective cover (10) is placed on the bottom plate (11).

7. The on-line detection device for the profile and center height of the valve rocker arm assembly support surface according to claim 1, characterized in that: A support center high standard block (25) is placed on the bottom plate (11).

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