Rocker arm shaft full-hole-series machining error-proof testing fixture

Abstract

The invention relates to a rocker arm shaft full-hole-series processing error-proofing testing fixture, which is mainly used for error-proofing detection of rocker arm shaft full-hole-series processing. The error-proof pin is arranged on the bottom plate and is used for detecting whether the positions of all holes in the circumference of the rocker arm shaft are correct or not and whether machining is missed or not, and the baffle is used for detecting the distance between the holes of the rocker arm shaft and the end face. The mistake-proof pin and the bottom plate are assembled in a tight fit mode, and the baffle is fastened on the bottom plate through screws. The mistake-proof pin is matched with an R groove, a hole and an end face groove in different directions of the circumference of the rocker arm shaft, and the baffles are matched with the two end faces of the rocker arm shaft respectively. Electrodes are arranged at two ends of the bottom plate and communicated with indicator lamps, lead-out wires of the electrodes are connected into a battery box, insulating rubber sleeves wrap the peripheries of the electrodes, and batteries supply power to circuits. According to the roundness characteristic of shaft parts, an operator can roll the rocker arm shaft on the bottom plate, full-characteristic detection of full-hole-series machining of the rocker arm shaft can be achieved, operation is easy and convenient, the detection efficiency is high, and the effect of category mixing prevention can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts manufacturing, in particular to an error-proofing inspection tool used for full-hole processing of a rocker shaft. Background Art

[0002] The rocker shaft is one of the important parts of automobile engines. There are many types of rocker shafts with the same outer diameter, only different lengths, hole positions and internal structures. For different models, the oil hole sizes and positions of the rocker shafts are different, but they are very similar, which makes it very easy to mix up parts and miss processing during the processing. In order to prevent wrong or missed processing, and similar parts are mixed together, the traditional method is to use measuring tools to check whether the size of each hole is qualified for processing, use position measuring tools to detect the position of each hole, and manually visually check whether there is any missing processing. This takes a long time and requires a large number of inspection tools. A lot of financial and human resources are consumed during the inspection process, and manual inspection causes visual fatigue and is prone to misjudgment. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a rocker shaft full hole system processing error-proof inspection tool to facilitate and quickly detect whether the rocker shaft is mixed up and incorrectly processed.

[0004] To achieve the above-mentioned purpose of the invention, the anti-error inspection fixture of the present invention is composed of a base plate, an anti-error pin installed on the base plate for detecting whether the positions of the holes on the circumference of the rocker arm shaft are correct and whether there is any omission in the processing, and a baffle for detecting the distance from the hole to the end face of the rocker arm shaft; the anti-error pin is assembled with the base plate through a tight fit, and the baffle is fastened to the base plate with screws.

[0005] Furthermore, the anti-misalignment pin is matched with the R groove, hole and end face groove in different directions of the circumference of the rocker arm shaft, and the baffle is matched with the two end faces of the rocker arm shaft respectively.

[0006] Furthermore, electrodes are provided at both ends of the bottom plate, the electrodes are connected to indicator lights, and the electrode lead wires are connected to the battery box. The outer periphery of the electrodes is wrapped with an insulating rubber sleeve, and the battery provides power for the circuit.

[0007] Furthermore, the anti-misalignment pin 1 and the anti-misalignment pin 2 on the bottom plate are respectively matched with the hole 1 and the R groove 1 of the rocker arm shaft, and the distance between the center of the anti-misalignment pin 1 and the step surface of the right baffle plate is matched with the distance between the center of the hole 1 of the rocker arm shaft and the right end surface; the anti-misalignment pin 1 coincides with the center of the right baffle plate; The anti-misalignment pin 3 on the bottom plate is matched with the hole 1 of the rocker arm shaft, and the distance between the center of the anti-misalignment pin 3 and the step surface of the left baffle plate is matched with the distance between the center of the hole 1 of the rocker arm shaft and the left end surface; the anti-misalignment pin 3 coincides with the center of the left baffle plate; The anti-error pin 4 on the bottom plate is matched with the R groove 2 of the rocker shaft, the anti-error pin 5 is matched with the hole 2 of the rocker shaft, and the four anti-error pins 6 are respectively matched with the four holes 3 of the rocker shaft; the centers of the anti-error pin 5 and the four anti-error pins 6 coincide with each other; The anti-error pin 7 on the bottom plate is matched with the hole 4 of the rocker shaft, and the twelve anti-error pins 8 are respectively matched with the twelve holes 5 of the rocker shaft; the anti-error pin 7 and the twelve anti-error pins 8 coincide with the center of the electrode; The anti-error pin nine on the bottom plate matches with the end face groove of the rocker shaft, the anti-error pin ten matches with the hole six of the rocker shaft, and the anti-error pin eleven matches with the four holes seven of the rocker shaft; the centers of the four anti-error pins eleven coincide.

[0008] Compared with the prior art, the present invention has the following advantages: According to the circular characteristics of shaft parts, the operator can roll the rocker shaft on the base plate to realize the full feature detection of the full hole system processing of the rocker shaft. By rotating the rocker shaft to different positions on the base plate, each anti-error pin is inserted into the corresponding reference hole, R groove and end face groove in each direction of the rocker shaft to detect whether each processing position of the circumference is correct and whether each part is missed in processing.

[0009] During the detection process, for the detection of small holes in the rocker arm shaft, in order to ensure the accuracy of the detection, an indicator light display is added to prevent improper operation.

[0010] Only one error-proofing inspection fixture is needed to realize full feature detection of the rocker arm shaft. The operation is simple and convenient. Compared with the traditional method of detecting each feature one by one, the detection efficiency is greatly improved.

[0011] There are many types of rocker arm shafts with the same outer diameter, but different lengths, hole positions and internal structures. This inspection fixture can be set according to the characteristics of each part, fully preventing product mixing. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0013] Figure 2 It is a circuit schematic diagram of the present invention.

[0014] Figure 3 yes Figure 1 Top view of the .

[0015] Figure 4 yes Figure 1 Right view of .

[0016] Figure 5 yes Figure 2 AA cross-section diagram.

[0017] Figure 6It is a three-dimensional structural diagram of the rocker arm shaft.

[0018] Figure 7 yes Figure 6 Schematic diagram of the structure of the rocker shaft.

[0019] Figure 8 yes Figure 6 Schematic diagram of the structure of the rocker shaft in another direction.

[0020] Fig. 9 yes Figure 6 Schematic diagram of the structure of the rocker shaft in another direction.

[0021] In the figure: 1. left baffle; 1-1. step surface of left baffle; 2. anti-error pin one; 3. anti-error pin two; 4. right baffle; 4-1. step surface of right baffle; 5. anti-error pin three; 6. anti-error pin four; 7. anti-error pin five; 8. anti-error pin six; 9. anti-error pin seven; 10. anti-error pin eight; 11. electrode; 12. indicator light; 13. battery box; 14. insulating rubber sleeve; 15. anti-error pin nine; 16. anti-error pin ten; 17. anti-error pin eleven; 18. bottom plate; 19. rocker arm shaft; 20. hole one; 21. R groove one; 22. R groove two; 23. hole two; 24. hole three; 25. hole four; 26. hole five; 27. end face groove; 28. hole six; 29. ​​hole seven. DETAILED DESCRIPTION

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, the anti-error inspection fixture of the present invention is mainly composed of a base plate 18, an anti-error pin installed on the base plate 18, and a baffle. The anti-error pin is used to detect whether the positions of the circumferential holes of the rocker arm shaft 19 are correct and whether they are missed, and the baffle is used to detect the distance from the rocker arm shaft hole to the end face; the anti-error pin and the base plate 18 are assembled together by tight fit, and the baffle is fastened to the base plate 18 with screws; the anti-error pin is adapted to the R grooves, holes, and end face grooves in different directions of the circumference of the rocker arm shaft 19, and the baffle is adapted to the two end faces of the rocker arm shaft 19 respectively.

[0023] The anti-misalignment pin 2 and the anti-misalignment pin 3 on the bottom plate 18 are respectively matched with the hole 20 and the R groove 21 of the rocker shaft 19, and the distance from the center of the anti-misalignment pin 2 to the step surface 4-1 of the right baffle plate is matched with the distance from the center of the hole 20 of the rocker shaft 19 to the right end surface; the anti-misalignment pin 2 coincides with the center of the right baffle plate 4.

[0024] The anti-misalignment pin 3 5 on the bottom plate 18 is matched with the hole 120 of the rocker shaft 19, and the distance from the center of the anti-misalignment pin 3 5 to the step surface 1-1 of the left baffle plate is matched with the distance from the center of the hole 120 of the rocker shaft 19 to the left end surface; the anti-misalignment pin 3 5 coincides with the center of the left baffle plate 1.

[0025] The anti-error pin four 6 on the base plate 18 is matched with the R groove two 22 of the rocker shaft 19, the anti-error pin five 7 is matched with the hole two 23 of the rocker shaft 19, and the four anti-error pins six 8 are respectively matched with the four holes three 24 of the rocker shaft 19; the centers of the anti-error pin five 7 and the four anti-error pins six 8 coincide.

[0026] The anti-error pin seven 9 on the bottom plate 18 is matched with the hole four 25 of the rocker shaft 19, and the twelve anti-error pins eight 10 are respectively matched with the twelve holes five 26 of the rocker shaft 19; especially for the twelve φ1.5 holes five 26, since the hole depth is shallow, in order to ensure that the anti-error pin eight 10 can be inserted into place, electrodes 11 are specially provided at both ends of the bottom plate 18, the electrode 11 is connected to the indicator light 12, and the lead wire of the electrode 11 is connected to the battery box 13, the battery provides power for the circuit, and the outer periphery of the electrode 11 is wrapped with an insulating rubber sleeve 14; the centers of the anti-error pin seven 9, the twelve anti-error pins eight 10, and the electrode 11 coincide.

[0027] The anti-error pin nine 15 on the base plate 18 is matched with the end surface groove 27 of the rocker shaft 19, the anti-error pin ten 16 is matched with the hole six 28 of the rocker shaft 19, and the anti-error pin eleven 17 is matched with the four holes seven 29 of the rocker shaft 19; the centers of the four anti-error pins eleven 17 coincide.

[0028] The detection steps are as follows: Step 1: Mainly check whether the position of the hole 20 of the rocker shaft 19, the position and angle of the R groove 21 are correct and whether there is any missing processing, and whether the distance from the center of the hole 20 to the right end face of the rocker shaft 19 is qualified. The operator places the rocker shaft 19 horizontally on the upper part of the bottom plate 18, inserts the hole 20 of the rocker shaft 19 into the anti-misalignment pin 2, aligns the R groove 21 with the anti-misalignment pin 23, and the rocker shaft 19 can be placed on the step of the right baffle 4, which is qualified, otherwise it is unqualified.

[0029] Step 2: Mainly check whether the distance from the center of the hole 120 of the rocker shaft 19 to the left end face of the rocker shaft 19 is qualified. The operator first takes out the rocker shaft 19, and then inserts the hole 120 of the rocker shaft 19 into the anti-misalignment pin 3 5. If the rocker shaft 19 can be put into the step of the left baffle 1, it is qualified, otherwise it is unqualified.

[0030] Step 3: Mainly check whether the position and angle of the R groove 22 of the rocker shaft 19, the position of the φ5 hole 23, and the four oblique φ3.5 holes 3 24 are correct and whether they are missed. The operator rotates the rocker shaft 19 counterclockwise. If the anti-error pin 5 7 and the four anti-error pins 6 8 can be inserted into the hole 23 and the four holes 3 24 of the rocker shaft 19 respectively, the anti-error pin 4 6 can be aligned with the R groove 22, and the rocker shaft 19 fits with the bottom plate 18, it is qualified, otherwise it is unqualified.

[0031] Step 4: Mainly check whether the positions of the φ3 hole 4 25 and the twelve φ1.5 holes 5 26 of the rocker shaft 19 are correct and whether they are missed. The operator continues to rotate the rocker shaft 19 counterclockwise. If the error-proofing pin 7 9 and the error-proofing pin 8 10 can be inserted into the hole 4 25 and the twelve holes 5 26 of the rocker shaft 19 respectively and the indicator light 12 is green, it is qualified, otherwise it is unqualified.

[0032] Step 5: Mainly check whether the end face groove 27, hole 6 28, and four holes 7 29 of the rocker shaft 19 are positioned correctly and whether they are missing. The operator continues to rotate the rocker shaft 19 counterclockwise, and the anti-error pin 9 15 is aligned with the end face groove 27 of the rocker shaft 19, the anti-error pin 10 16, and the anti-error pin 11 17 can be inserted into the φ5 hole 6 28 and the four φ3.5 holes 7 29 of the rocker shaft 19 respectively, and the rocker shaft 19 fits with the bottom plate 18, which is qualified, otherwise it is unqualified.

Claims

1. A rocker shaft full hole system processing error-proofing inspection tool, characterized in that: The error-proofing inspection tool comprises a base plate (18), an error-proofing pin mounted on the base plate (18) for detecting whether the positions of the circumferential holes of the rocker arm shaft (19) are correct and whether they are missed, and a baffle for detecting the distance from the hole to the end face of the rocker arm shaft (19); the error-proofing pin is assembled with the base plate (18) by tight fit, and the baffle is fastened to the base plate (18) by screws.

2. The rocker arm shaft full hole machining error-proofing inspection tool according to claim 1, characterized in that: The anti-misalignment pin is matched with the R groove, hole and end face groove in different directions of the circumference of the rocker arm shaft (19), and the baffle is matched with the two end faces of the rocker arm shaft (19) respectively.

3. The rocker arm shaft full hole machining error-proofing inspection tool according to claim 1, characterized in that: Electrodes (11) are provided at both ends of the bottom plate (18); the electrodes (11) are connected to an indicator light (12); wires extending from the electrodes (11) are connected to a battery box (13); an insulating rubber sleeve (14) is wrapped around the outer periphery of the electrodes (11); and the battery provides power for the circuit.

4. The rocker arm shaft full hole machining error-proofing inspection tool according to claim 1, characterized in that: The anti-misalignment pin 1 (2) and the anti-misalignment pin 2 (3) on the bottom plate (18) are respectively matched with the hole 1 (20) and the R groove 1 (21) of the rocker arm shaft (19); the distance between the center of the anti-misalignment pin 1 (2) and the step surface (4-1) of the right baffle plate is matched with the distance between the center of the hole 1 (20) of the rocker arm shaft (19) and the right end surface; the anti-misalignment pin 1 (2) and the center of the right baffle plate (4) are coincident; The anti-misalignment pin three (5) on the bottom plate (18) is matched with the hole one (20) of the rocker arm shaft (19); the distance between the center of the anti-misalignment pin three (5) and the step surface (1-1) of the left baffle plate is matched with the distance between the center of the hole one (20) of the rocker arm shaft (19) and the left end surface; the anti-misalignment pin three (5) coincides with the center of the left baffle plate (1); The anti-misalignment pin 4 (6) on the bottom plate (18) is matched with the R groove 2 (22) of the rocker shaft (19), the anti-misalignment pin 5 (7) is matched with the hole 2 (23) of the rocker shaft (19), and the four anti-misalignment pins 6 (8) are respectively matched with the four holes 3 (24) of the rocker shaft (19); the centers of the anti-misalignment pin 5 (7) and the four anti-misalignment pins 6 (8) are overlapped; The anti-error pin seven (9) on the bottom plate (18) is matched with the hole four (25) of the rocker shaft (19), and the twelve anti-error pins eight (10) are respectively matched with the twelve holes five (26) of the rocker shaft (19); the anti-error pin seven (9), the twelve anti-error pins eight (10) and the center of the electrode (11) are coincident; The anti-misalignment pin nine (15) on the bottom plate (18) matches with the end surface groove (27) of the rocker shaft (19), the anti-misalignment pin ten (16) matches with the hole six (28) of the rocker shaft (19), and the anti-misalignment pin eleven (17) matches with the four holes seven (29) of the rocker shaft (19); the centers of the four anti-misalignment pins eleven (17) coincide with each other.

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