Profiling assembly measuring device for engine rocker chamber

Abstract

The utility model relates to a profiling assembly measuring device for an engine rocker chamber, and belongs to the technical field of detection tools. The profiling assembly measuring device for the engine rocker chamber comprises a tool main body which is provided with a reference surface for placing the rocker chamber; the pressing device is arranged on the datum plane, and when the pressing device is in fastening fit with the rocker arm chamber, the end face to be measured of the boss and the end face to be measured of the fastener are limited on the datum plane in the radial direction; and the detection device is used for detecting the to-be-detected end face of the boss and the to-be-detected end face of the fastener. According to the scheme provided by the utility model, the assembly between the rocker arm chamber and the cylinder body is simulated through the reference surface and the pressing device, so that the rocker arm chamber can be attached to the reference surface, and the measurement efficiency and accuracy of the detection device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection tooling, in particular to a profiling assembly measuring device for an engine rocker chamber. Background Art

[0002] The engine is the core component of the car, and can generally be divided into the valve cover, rocker chamber and cylinder block, with the valve cover and cylinder block connected by the rocker chamber. The rocker chamber has multiple bosses, and the accuracy of the bosses is crucial for the car.

[0003] In the prior art, the traditional detection method is to measure the height of the boss by a height gauge to determine whether the rocker chamber is qualified. However, the measurement error of this method is large and it is difficult to ensure an ideal detection effect. Utility Model Content

[0004] In order to overcome the problems existing in the related technology, the utility model provides a contour assembly measuring device for an engine rocker chamber, which simulates the assembly between the rocker chamber and the cylinder block through a reference surface and a clamping device, so that the rocker chamber can fit with the reference surface, thereby improving the measurement efficiency and accuracy of the detection device.

[0005] The utility model provides a first aspect of a profiling assembly measuring device for an engine rocker chamber, wherein a fastener is provided on a boss of the rocker chamber, comprising:

[0006] The tooling body has a reference surface for placing the rocker chamber;

[0007] A clamping device is arranged on the reference plane, and when the clamping device is tightly matched with the rocker chamber, the end face to be measured of the boss and the end face to be measured of the fastener are radially limited to be above the reference plane;

[0008] The detection device is used to detect the end face of the boss to be tested and the end face of the fastener to be tested.

[0009] In a possible implementation of the first aspect above, the clamping device includes a pressure mechanism, a switch mechanism, and a plurality of clamping mechanisms equidistantly distributed side by side along the length direction of the rocker chamber;

[0010] The pressure mechanism is used to input an air pressure into the pressing mechanism;

[0011] The switch mechanism is used to drive the clamping mechanism to move closer to or away from the rocker chamber;

[0012] The clamping mechanism is used to fix the rocker chamber on the reference plane.

[0013] In a possible implementation of the first aspect above, the switch mechanism includes a stretch rod and a manual valve;

[0014] The clamping mechanism includes a clamping claw and an angle cylinder;

[0015] The angle cylinder and the manual valve are both connected to the pressure mechanism;

[0016] The piston rod of the angle cylinder is connected to the pressure claw to drive the pressure claw to move along the axial direction of the piston rod;

[0017] The manual valve is connected to the piston rod to drive the piston rod to rotate around its own axis;

[0018] The stretching rod is connected to the manual valve to control the pressure claw to approach or move away from the rocker arm chamber.

[0019] In a possible implementation of the first aspect above, the pressure mechanism is a pneumatic triplet;

[0020] One end of the pressure claw facing the rocker chamber has a contact surface adapted to the rocker chamber;

[0021] The switch mechanism further comprises a side plate and a measuring sleeve, wherein the measuring sleeve is arranged on the side plate, the side plate is arranged on the reference plane, and the stretching rod is inserted on the measuring sleeve.

[0022] In a possible implementation of the first aspect above, the detection device includes a first detection mechanism and a second detection mechanism, the first detection mechanism is used to detect the end face of the boss to be measured; the second detection mechanism is used to detect the end face of the fastener to be measured, the end face of the boss to be measured is away from the reference plane, and the end face of the fastener to be measured is opposite to the reference plane.

[0023] In a possible implementation of the first aspect above, the first detection mechanism includes a calibration column and a dial indicator, the calibration column is equal to a standard height of the boss, and the calibration column has a calibration surface, and the calibration surface is used to return the dial indicator to zero.

[0024] In a possible implementation of the first aspect above, a plurality of recessed structures opposite to the fasteners are further provided on the reference surface, and the second detection mechanism can move along the length direction of the recessed structures.

[0025] In a possible implementation of the first aspect above, the second detection mechanism is a feeler gauge, and one end of the feeler gauge has a calibration surface.

[0026] In a possible implementation of the first aspect above, the force applied by the clamping device to the rocker chamber is 40N / CM2 to 60N / CM2.

[0027] In a possible implementation of the first aspect above, a pre-limiting mechanism is also included, which includes a positioning pin and a limiting column. The positioning pin is arranged on both sides of the reference plane and corresponds to the positioning hole of the rocker chamber, and the limiting column contacts and abuts against the outer wall of the rocker chamber.

[0028] The technical solution provided by the utility model may have the following beneficial effects:

[0029] The utility model provides a contour assembly measuring device for an engine rocker arm chamber, comprising a clamping device and a detection device. When a tooling body is used to measure the engine rocker arm chamber, the rocker arm chamber is placed on a reference plane, the rocker arm chamber is tightly fitted to the reference plane by the clamping device, and the detection device is used to respectively measure the distance between the end face of the boss to be measured and the reference plane, and the distance between the end face of the fastener to be measured and the reference plane, so that the inspector can judge the qualification of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0031] Figure 1 It is a schematic diagram of the overall structure of a profiling assembly measuring device for an engine rocker chamber shown in an embodiment of the utility model;

[0032] Figure 2 It is a diagram showing the coordination of the tooling body and the rocker arm chamber in an embodiment of the utility model;

[0033] Figure 3 It is another structural schematic diagram of a profiling assembly measuring device for an engine rocker chamber shown in an embodiment of the utility model;

[0034] Figure 4 It is a structural schematic diagram of a switch mechanism shown in an embodiment of the utility model;

[0035] Figure 5 It is a structural schematic diagram of a clamping mechanism shown in an embodiment of the utility model.

[0036] 1. Tool body; 10. Reference surface; 11. Concave structure;

[0037] 2. Clamping device; 21. Pressure mechanism; 22. Switch mechanism; 221. Stretching rod; 222. Manual valve; 223. Side plate; 224. Measuring sleeve; 23. Clamping mechanism; 231. Pressure claw; 232. Angle cylinder;

[0038] 3. Detection device; 31. First detection mechanism; 311. Calibration column; 312. Dial indicator; 32. Second detection mechanism;

[0039] 4. Pre-limiting mechanism; 41. Positioning pin; 42. Limiting column;

[0040] 100, rocker arm chamber; 101, boss; 101a, end face of boss to be measured; 102, fastener; 102a, end face of fastener to be measured. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0042] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0045] In the prior art, the traditional detection method is to measure the height of the boss 101 by a height gauge to determine whether the rocker chamber 100 is qualified. However, the measurement error of this method is large and it is difficult to ensure an ideal detection effect.

[0046] In view of the above problems, the utility model provides a contour assembly measuring device for an engine rocker chamber, which simulates the assembly between the rocker chamber 100 and the cylinder block through a reference surface 10 and a clamping device 2, so that the rocker chamber 100 can fit with the reference surface 10, thereby improving the measurement efficiency and accuracy of the detection device.

[0047] The technical solution of the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0048] Figure 1 It is a schematic diagram of the overall structure of a profiling assembly measuring device for an engine rocker chamber shown in an embodiment of the utility model;

[0049] Figure 2 It is a diagram showing the coordination of the tooling body 1 and the rocker arm chamber 100 according to an embodiment of the present utility model.

[0050] See also Figure 1 to Figure 2 , the embodiment of the utility model provides a profiling assembly measuring device for an engine rocker chamber, a fastener 102 is provided on a boss 101 of a rocker chamber 100, and the tooling body 1 has a reference surface 10 for placing the rocker chamber 100;

[0051] The clamping device 2 is arranged on the reference surface 10. When the clamping device 2 is tightly matched with the rocker chamber 100, the end surface 101a of the boss to be measured and the end surface 102a of the fastener to be measured are radially limited to be above the reference surface 10.

[0052] The detection device 3 is used to detect the end surface 101a of the boss to be tested and the end surface 102a of the fastener to be tested.

[0053] The tooling body 1 has a top surface, a bottom surface and four side surfaces, wherein the top surface is a flat surface, which serves as a reference surface 10 for measuring the height of the end surface 101a of the boss to be measured and the length of the end surface 102a of the fastener to be measured. Specifically, the reference surface 10 simulates the mounting surface of the cylinder block in the engine. When the tooling body 1 is used to measure the engine rocker chamber 100, the rocker chamber 100 is placed on the reference surface 10, and the rocker chamber 100 is tightly attached to the reference surface 10 by the clamping device 2. The detection device 3 is used to measure the distance between the end surface 101a of the boss to be measured and the reference surface 10, and the distance between the end surface 102a of the fastener to be measured and the reference surface 10, so that the inspector can judge the qualified condition of the product. In the specific implementation, the fastener 102 can use a pin of standard length, and the pin is fixed in the boss.

[0054] Compared with the prior art, the contour assembly measuring device for the engine rocker chamber provided by the utility model realizes contour assembly through the reference surface 10 of the tooling body 1 and the clamping device 2, which is convenient for precision measurement of the boss 101 and the fastener 102, and has the characteristics of simple structure, convenience and speed.

[0055] In practical applications, common numbers of cylinders in automobile engines include 3, 4, 5, 6, 8, 10, and 12 cylinders. Therefore, in order to adapt the number of cylinders of the engine, please refer to Figure 2 and Figure 3 The clamping device 2 for the profiling assembly measuring device of the engine rocker chamber comprises a pressure mechanism 21, a switch mechanism 22 and a plurality of clamping mechanisms 23 arranged side by side and equidistantly distributed along the length direction of the rocker chamber 100;

[0056] The pressure mechanism 21 is used to input an air pressure to the pressing mechanism 23;

[0057] The switch mechanism 22 is used to drive the clamping mechanism 23 to move closer to or away from the rocker chamber 100;

[0058] The clamping mechanism 23 is used to fix the rocker chamber 100 on the reference surface 10 .

[0059] Specifically, after the inspector places the rocker chamber 100 on the reference plane 10 of the tooling body 1, the switch mechanism 22 drives the clamping mechanism 23 to approach the rocker chamber 100, and then inputs an air pressure to the clamping mechanism 23 through the pressure mechanism 21, so that the clamping mechanism 23 can be tightly matched with the rocker chamber 100, and one end face of the rocker chamber 100 is pressed against the reference plane 10, ensuring that the purpose of contoured assembly can be successfully achieved. After completing the above-mentioned tightening and matching, measurement can be carried out.

[0060] In this embodiment, the contoured assembly is achieved through the combined operation of the pressure mechanism 21, the switch mechanism 22 and the clamping mechanism 23, and an air pressure is input to the clamping mechanism 23 through the pressure mechanism 21, which can ensure that the pressure applied to the rocker arm chamber 100 by the clamping mechanism 23 is constant when the rocker arm chamber 100 is tightly matched with the rocker arm chamber 100, thereby ensuring that the rocker arm chamber 100 can be tightly matched with the reference surface 10.

[0061] In this embodiment, the air pressure input to the pressing mechanism 23 through the pressure mechanism 21 can be adjusted according to actual conditions, and is not a sole limitation here.

[0062] It should be noted that those skilled in the art can make some changes to the pressure mechanism 21 according to different specific occasions. For example, a bolt with a locking function can be provided on the clamping mechanism 23, and the bolt can be threadedly connected to the clamping mechanism 23, so that the clamping mechanism 23 can be tightly matched with the rocker chamber 100. The pressure mechanism 21 in the clamping device 2 is only a preferred embodiment, not the only one. In specific applications, a counterweight block can also be provided to achieve a close fit between the reference surface 10 and the rocker chamber 100, thereby achieving the purpose of mock assembly. Therefore, the clamping device 2 of the profiling assembly measuring device for the engine rocker chamber provided by the utility model should not be limited to this situation.

[0063] See also Figure 4 , based on the above specific implementation, the switch mechanism 22 of the above-mentioned profiling assembly measuring device for the engine rocker chamber includes a stretching rod 221 and a manual valve 222;

[0064] The clamping mechanism 23 includes a clamping claw 231 and an angle cylinder 232;

[0065] The rotation cylinder 232 and the manual valve 222 are both connected to the pressure mechanism 21;

[0066] The piston rod of the rotation cylinder 232 is connected to the pressing claw 231 to drive the pressing claw 231 to move along the axial direction of the piston rod;

[0067] The manual valve 222 is connected to the piston rod to drive the piston rod to rotate around its own axis;

[0068] The stretching rod 221 is connected to the manual valve 222 to control the pressing claw 231 to move closer to or farther from the rocker chamber 100 .

[0069] See also Figure 5 , based on the above specific implementation, the pressure mechanism 21 of the above-mentioned profiling assembly measuring device for the engine rocker chamber is a pneumatic triplet;

[0070] One end of the pressing claw 231 facing the rocker chamber 100 has a contact surface adapted to the rocker chamber 100;

[0071] The switch mechanism 22 further includes a side plate 223 and a measuring sleeve 224 . The measuring sleeve 224 is disposed on the side plate 223 . The side plate 223 is disposed on the reference surface 10 . The stretching rod 221 is inserted into the measuring sleeve 224 .

[0072] In this embodiment, the clamping force of the pressure claw 231 on the rocker chamber 100 is adjusted by the pneumatic triplet. When in use, the stretching rod 221 is pulled out along the axial direction of the stretching rod 221, and the manual valve 222 drives the pressure claw 231 to move to the right. At this time, the pressure claw 231 moves away from the rocker chamber 100, and the pressure claw 231 is not opposite to the rocker chamber 100. When the stretching rod 221 is retracted, the manual valve 222 drives the pressure claw 231 to move to the left. At this time, the pressure claw 231 moves toward the rocker chamber 100, and the pressure claw 231 is opposite to the rocker chamber 100. The pneumatic triplet inputs an air pressure to the angle cylinder 232, and the angle cylinder 232 drives the pressure claw 231 to move, thereby realizing the clamping work on the rocker chamber 100.

[0073] In a specific embodiment, the detection device 3 of the above-mentioned contour assembly measuring device for the engine rocker chamber includes a first detection mechanism 31 and a second detection mechanism 32, wherein the first detection mechanism 31 is used to detect the end face 101a of the boss to be measured; the second detection mechanism 32 is used to detect the end face 102a of the fastener to be measured, the end face 101a of the boss to be measured is away from the reference plane 10, and the end face 102a of the fastener to be measured is opposite to the reference plane 10.

[0074] On the basis of the above-mentioned specific implementation, the first detection mechanism 31 of the above-mentioned contour assembly measuring device for the engine rocker chamber includes a calibration column 311 and a dial indicator 312, wherein the calibration column 311 is equal to the standard height of the boss 101, and the calibration column 311 has a calibration surface, which is used to return the dial indicator 312 to zero.

[0075] On the basis of the above specific implementation, in order to improve the detection speed and detection accuracy of the second detection mechanism 32, please refer to Figure 2 and Figure 3 The reference surface 10 of the above-mentioned contour assembly measuring device for the engine rocker chamber is also provided with a plurality of recessed structures 11 opposite to the fasteners 102 , and the second detection mechanism 32 can move along the length direction of the recessed structures 11 .

[0076] The recessed structure 11 on the reference surface 10 of the tool body 1 is a rectangular groove, and one end of the rectangular groove close to the fastener 102 is set to a shape that matches the second detection mechanism 32, thereby reducing the collision and wear of the recessed structure 11 on the second detection mechanism 32. The rectangular groove is set along the width direction of the tool body 1, and the rectangular groove has a first groove side wall, a bottom wall, and a second groove side wall; when the second detection mechanism 32 moves in the rectangular groove, the second detection mechanism 32 is tightly fitted with the bottom wall.

[0077] On the basis of the above specific implementation, the second detection mechanism 32 of the above-mentioned profiling assembly measuring device for the engine rocker chamber is a feeler gauge, and one end of the feeler gauge has a calibration surface.

[0078] When the tooling body 1 is used to measure the engine rocker chamber 100, the rocker chamber 100 is placed on the reference plane 10, and the rocker chamber 100 is tightly attached to the reference plane 10 by the clamping device 2. The feeler gauge is placed in the recessed structure 11. The inspector holds the end of the feeler gauge and pushes the feeler gauge to move toward the end of the fastener 102 close to the bottom of the recessed structure 11. If the calibration surface of the feeler gauge can be located between the end surface 102a of the fastener to be measured and the reference plane 10, it is judged to be qualified. If the calibration surface of the feeler gauge cannot be embedded between the end surface 102a of the fastener to be measured and the reference plane 10, it is judged to be unqualified. In the specific measurement, the height of the calibration surface of the feeler gauge from the reference plane 10 is 0.4mm.

[0079] In actual applications, the feeler gauge may be bent. In this case, the calibration surface of the feeler gauge may have difficulty entering the gap between the reference surface 10 and the end face 102a of the fastener to be measured, which may lead to the erroneous judgment that the rocker chamber 100 is unqualified. Based on this, the utility model also provides another implementation scheme, in which corresponding step structures are provided on the first groove side wall and the second groove side wall of the rectangular groove, and the feeler gauge is provided with a snap-fitting structure matched with the step structure on both sides along its length direction. With the cooperation of the step structure and the snap-fitting structure, the feeler gauge is locked in the rectangular groove to avoid the problem that the feeler gauge is bent and cannot be measured, or the feeler gauge is broken due to excessive insertion force.

[0080] In order to facilitate the inspectors to quickly and accurately position the rocker chamber 100 and ensure that the clamping mechanism 23 can fit tightly with the rocker chamber 100, on the basis of the above-mentioned specific implementation manner, the above-mentioned contour assembly measuring device for the engine rocker chamber also includes a pre-limiting mechanism 4, and the pre-limiting mechanism 4 includes a positioning pin 41 and a limiting column 42, and the positioning pin 41 is arranged on both sides of the reference plane 10 and corresponds to the positioning hole of the rocker chamber 100, and the limiting column 42 fits tightly with the outer wall of the rocker chamber 100.

[0081] The rocker chamber 100 in the prior art is made of aluminum alloy die-casting. Therefore, the inspector can move it to the reference surface 10 of the tooling body 1 by manual moving. Under the guidance of the limit column 42, the inspector aligns the positioning pin 41 with the positioning hole of the rocker chamber 100, thereby achieving fixation, improving the accuracy of the contoured assembly, and ensuring the effectiveness of the detection effect.

[0082] Based on the contour assembly measuring device for the engine rocker chamber provided in the above embodiment, the utility model further provides that the force applied by the clamping device 2 to the rocker chamber 100 is 40N / cm2 to 60N / cm2.

[0083] Before measurement, the measurement personnel first adjust the pressure of the pneumatic triplet to keep the assembly pressure at a clamping force of 40N / cm2 to 60N / cm2, and then place the rocker chamber 100 workpiece on the reference plane 10 of the tooling body 1 according to the requirements of the positioning pin 41 and the limit column 42, and then pull up the stretching rod 221 to make the manual valve 222 open the clamping device 2 to the right. After the pressing claw 231 presses the rocker chamber 100, use the dial indicator 312 to measure whether the height of the end face 101a of the boss to be measured is within the tolerance range of 60±0.25mm.

[0084] In this embodiment, the limit column 42 and the positioning pin 41 can be made of lightweight aluminum alloy, polyamide, polycarbonate and other materials. In a preferred embodiment, they are made of plastic materials such as polyamide and polycarbonate to prevent the limit column 42 from breaking or scratching the rocker chamber 100.

[0085] In order to facilitate those skilled in the art to implement the design ideas involved in the utility model, the utility model also provides a specific operation process of the device:

[0086] Step 1: Before measuring, check whether the device is loose, whether the measuring tools are complete, and clean the anti-rust grease on the limit structure.

[0087] Step 2: Check whether the pressure gauge is normal; without placing the product, check whether the pressure claw 231 is clamped normally; if not, please report it for repair;

[0088] Step 3: Check the workpiece to be tested (i.e., the rocker chamber 100). The end face of the rocker chamber 100 is not allowed to be dented or deformed. Position the product on the inspection fixture, visually check that the inspection fixture positioning pin 41 is positioned correctly, and after the end face of the rocker chamber 100 is basically flush with the inspection fixture, pull the stretching rod 221, put on the pressure claw 231 to clamp the inspection workpiece, and visually confirm again whether the end face of the sealing groove of the inspection workpiece is in close contact with the limiting structure; if there is a gap, open the pressure claw 231, pick up the inspection workpiece, check whether there are foreign objects on the supporting surface of the limiting structure, the end face of the rocker chamber 100, and the reference surface 10 of the tooling body 1, and re-place and confirm whether the product is tightly supported.

[0089] Step 4: First use the dial indicator 312 to calibrate to zero on the calibration column 311, and then use the dial indicator 312 base to measure the distance between the end face 101a of the boss to be tested and the reference surface 10. If the measurement value of the dial indicator 312 is within the control range, the product is qualified, otherwise it is unqualified.

[0090] Step 5: Use a feeler gauge to measure the distance from the bottom of the pin of the rocker arm chamber 100 to the reference plane 10. If the feeler gauge can pass smoothly, it is qualified; otherwise, it is unqualified.

[0091] Step 6: After the test is completed, release the pressure claw 231, restore the feeler gauge to its position, put the measuring seat of the digital dial indicator 312 back to the calibration column 311, and then take out the product.

[0092] Compared with the prior art, the contour assembly measuring device for the engine rocker arm chamber provided by the utility model realizes contour assembly measurement and is more in line with product use requirements; the cylinder automatic clamping device reduces labor volume and labor intensity and improves work efficiency; the pneumatic triplet monitors the pressure to make the clamping force more stable and ensure the stability of the detection; the CNC dial indicator 312 meter detection can know the product deformation position more quickly.

[0093] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0094] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A profiling assembly measuring device for an engine rocker chamber, wherein a fastener is provided on a boss of the rocker chamber, characterized in that: include: The tooling body has a reference surface for placing the rocker chamber; A clamping device is arranged on the reference plane, and when the clamping device is tightly matched with the rocker chamber, the end face to be measured of the boss and the end face to be measured of the fastener are radially limited to be above the reference plane; The detection device is used to detect the end face of the boss to be tested and the end face of the fastener to be tested.

2. The profiling assembly measuring device for the engine rocker chamber according to claim 1, characterized in that: The clamping device comprises a pressure mechanism, a switch mechanism and a plurality of clamping mechanisms arranged side by side and equidistantly distributed along the length direction of the rocker chamber; The pressure mechanism is used to input an air pressure into the pressing mechanism; The switch mechanism is used to drive the clamping mechanism to move closer to or away from the rocker chamber; The clamping mechanism is used to fix the rocker chamber on the reference plane.

3. The profiling assembly measuring device for the engine rocker chamber according to claim 2, characterized in that: The switch mechanism includes a stretching rod and a manual valve; The clamping mechanism includes a clamping claw and an angle cylinder; The angle cylinder and the manual valve are both connected to the pressure mechanism; The piston rod of the angle cylinder is connected to the pressure claw to drive the pressure claw to move along the axial direction of the piston rod; The manual valve is connected to the piston rod to drive the piston rod to rotate around its own axis; The stretching rod is connected to the manual valve to control the pressure claw to approach or move away from the rocker arm chamber.

4. The profiling assembly measuring device for the engine rocker chamber according to claim 3, characterized in that: The pressure mechanism is a pneumatic triplet; One end of the pressure claw facing the rocker chamber has a contact surface adapted to the rocker chamber; The switch mechanism further comprises a side plate and a measuring sleeve, wherein the measuring sleeve is arranged on the side plate, the side plate is arranged on the reference plane, and the stretching rod is inserted on the measuring sleeve.

5. The profiling assembly measuring device for an engine rocker chamber according to claim 1, characterized in that: The detection device includes a first detection mechanism and a second detection mechanism, wherein the first detection mechanism is used to detect the end face of the boss to be tested; the second detection mechanism is used to detect the end face of the fastener to be tested, the end face of the boss to be tested is away from the reference plane, and the end face of the fastener to be tested is opposite to the reference plane.

6. The profiling assembly measuring device for the engine rocker chamber according to claim 5, characterized in that: The first detection mechanism includes a calibration column and a dial indicator. The calibration column has a standard height equal to that of the boss. The calibration column has a calibration surface, and the calibration surface is used to return the dial indicator to zero.

7. The profiling assembly measuring device for the engine rocker chamber according to claim 5, characterized in that: The reference surface is also provided with a plurality of recessed structures opposite to the fasteners, and the second detection mechanism can move along the length direction of the recessed structures.

8. The profiling assembly measuring device for the engine rocker chamber according to claim 7, characterized in that: The second detection mechanism is a feeler gauge, and one end of the feeler gauge has a calibration surface.

9. The profiling assembly measuring device for an engine rocker chamber according to any one of claims 1 to 8, characterized in that: It also includes a pre-limiting mechanism, which includes a positioning pin and a limiting column. The positioning pin is arranged on both sides of the reference plane and corresponds to the positioning hole of the rocker chamber. The limiting column contacts and abuts against the outer side wall of the rocker chamber.

10. The profiling assembly measuring device for the engine rocker chamber according to claim 9, characterized in that: The force applied by the clamping device to the rocker chamber is 40N / cm 2 ~60N / cm 2 .

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