Piston ring groove distance detection device

Abstract

The utility model relates to a piston ring groove distance detection device, which comprises a connecting seat capable of moving along the X-axis direction and the Y-axis direction, a detection seat capable of moving along the Y-axis direction is connected onto the connecting seat through a driving mechanism, and a detection switch and a rotary block are respectively connected onto the detection seat. The rotary block is rotationally mounted on the detection seat through a fixed shaft in the Z-axis direction and a bearing in a matched mode, the rotary block is provided with a first rotary end and a second rotary end, the first rotary end is matched with the elastic detection end of the detection switch in an abutting-against mode, and the second rotary end is connected with a measuring head capable of being connected with the piston ring groove in an abutting-against mode. The position from the end face of the piston spigot to the annular groove is detected through high-precision detection sensor signals, detection is more accurate, use is convenient, efficiency is high, and precise machining is achieved through macro-variable calculation.

Description

Technical Field

[0001] This utility model relates to the field of piston processing technology, specifically to a piston ring groove distance detection device. Background Technology

[0002] The distance between piston ring grooves has many influencing factors. Excessive groove spacing affects the automatic assembly of piston rings and has a significant impact on the chamfer size during subsequent precision machining of the outer diameter. In severe cases, it can increase the amount of blow-by, thereby affecting engine performance.

[0003] Existing control methods:

[0004] One method is to measure directly with calipers. However, calipers have low resolution and accuracy, making it difficult to control the piston ring groove distance, especially the oblique groove distance.

[0005] Another method involves comparing and testing against standards. However, this method is affected by temperature changes and the temperature of the measuring instruments, resulting in unsatisfactory testing accuracy.

[0006] Piston ring groove machining is generally carried out using two machines. The subsequent ring groove chamfering needs to be machined on another machine. The error caused by the double clamping and the inconsistency of the groove side distance processed by the two ring groove machines bring great difficulties to the subsequent chamfering. The existing detection method has low detection accuracy and can ensure that the ring groove distance is qualified, but the consistency is poor. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a piston ring groove distance detection device, which is more accurate, easy to use, and highly efficient. When used with a lathe, it can achieve precise machining through macro-variable calculation, significantly improving product yield.

[0008] This utility model is achieved through the following technical solution:

[0009] A piston ring groove distance detection device is provided, including a connecting seat movable along the X-axis and Y-axis directions. A detection seat movable along the Y-axis direction is connected to the connecting seat via a drive mechanism. A detection switch and a rotary block are respectively connected to the detection seat. The rotary block is rotatably mounted on the detection seat via a fixed shaft in the Z-axis direction and a bearing. The rotary block has a first rotating end and a second rotating end. The first rotating end abuts against the elastic detection end of the detection switch, and the second rotating end is connected to a probe that can abut against the piston ring groove.

[0010] This solution controls the movement of the connecting seat along the X and Y axes. When the probe contacts the piston ring groove, the force causes the rotating block to rotate around a fixed axis. The first rotating end of the rotating block then presses against the elastic detection end of the detection switch, allowing the detection switch to obtain detection signals and data. This enables the detection of the ring groove distance. By combining multiple measurements with an average value, measurement errors can be effectively reduced, and the accuracy of subsequent processing can be improved.

[0011] Furthermore, the detection base includes a base plate and a vertical plate perpendicular to the base plate, with the detection switch connected through the vertical plate.

[0012] A vertical plate is fixed to the base plate of the detection base. The vertical plate has a mounting through hole for installing the detection switch, which can be easily mated with the rotating block for signal reception.

[0013] Furthermore, a slide is connected to the bottom of the base plate of the detection seat, and a linear guide rail that slides with the slide is provided on the connecting seat along the Y-axis direction.

[0014] The base plate of the detection seat is equipped with a slide, and the connecting seat is equipped with a linear guide rail. By utilizing the cooperation between the slide and the linear guide rail, the detection seat can slide smoothly in the Y-axis direction, ensuring the stability of the movement.

[0015] Furthermore, when the drive mechanism retracts the connecting seat, the probe is 3-5mm lower than the tool; when the drive mechanism extends the connecting seat, the probe is 5-8mm higher than the tool.

[0016] Furthermore, the connecting seat is mounted on the lathe and connected to one side of the lathe tool mounting seat. The lathe is equipped with a displacement mechanism for moving the X and Y axes of the tool mounting seat, a spindle for clamping and positioning the piston, and a controller for controlling the displacement mechanism and the spindle power mechanism. The controller is electrically connected to the drive mechanism, the displacement mechanism, the spindle power mechanism, and the detection switch, respectively.

[0017] The entire assembly is mounted on the lathe tool mount via a connecting bracket. It can move and adjust synchronously with the tool mount in the X and Y axes. By electrically connecting the detection switch to the lathe controller, it can work with the lathe tool to control the piston ring groove machining using the average value of the detection data, thus achieving consistent machining distance of the ring groove.

[0018] Furthermore, the drive mechanism is a cylinder.

[0019] The drive mechanism uses a cylinder, which can extend and retract the probe on the rotary block by extending and retracting the piston rod of the cylinder. When extended, it can measure the piston ring groove, and when retracted, it can avoid interference with the rotation of the piston on the main shaft.

[0020] The beneficial effects of this utility model are:

[0021] This invention uses a drive mechanism to extend the probe, and the connecting seat moves along the Y-axis to bring the probe into contact with the piston ring groove, detecting the groove distance. When the probe is under force, it drives a rotating block to rotate around a fixed axis. This causes the first rotating end of the rotating block to press against the elastic detection end of the detection switch, triggering a detection signal and transmitting detection data. The high-precision detection switch signal is used to detect the piston stop face to the ring groove position. Based on the calculation results, chamfering is performed. A multi-point detection method eliminates errors caused by groove side runout. Precise processing is achieved through macro-variable calculation, making the device more accurate, convenient, and efficient. This method eliminates the influence of groove distance deviation and reduces errors caused by groove side runout, thereby improving product processing quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a top view of the present invention.

[0024] Figure 3 This is a top view of the installation of this utility model with a lathe.

[0025] As shown in the figure:

[0026] 1. Connecting seat, 2. Cylinder, 3. Linear guide, 4. Slide, 5. Detection seat, 6. Detection switch, 7. Fixed shaft, 8. Rotary block, 9. Probe, 10. Elastic detection end, 11. Lathe, 12. Tool mounting seat, 13. Tool, 14. Spindle, 15. Piston. Detailed Implementation

[0027] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0028] A piston ring groove distance detection device includes a connecting seat 1 that can move along the X-axis and Y-axis directions. A detection seat 5 that can move along the Y-axis direction is connected to the connecting seat 1 via a cylinder 2. The base of the cylinder 2 is fixed to the connecting seat 1, and the piston rod of the cylinder 2 is perpendicularly connected to the detection seat 5.

[0029] The detection base 5 is connected to a detection switch 6 and a rotary block 8. The detection switch 6 is an existing technology product used to cooperate with the probe 9 to measure the coordinate value of the annular groove. It is a contact displacement sensor, and the GTSk contact displacement sensor produced by Taizhou Quantum Electronics Technology Co., Ltd. can be selected. The detection base 5 includes a base plate and a vertical plate perpendicular to the base plate. The detection switch 6 is connected through the vertical plate. A slide block 4 is connected to the bottom of the base plate of the detection base 5. A linear guide rail 3 is provided on the connecting base 1 along the Y-axis direction, which slides and engages with the slide block 4.

[0030] The rotary block 8 is rotatably mounted on the detection seat 6 via a fixed shaft 7 in the Z-axis direction and a bearing. The rotary block 8 has a first rotating end and a second rotating end. The first rotating end abuts against the elastic detection end 10 of the detection switch 6, and the second rotating end is connected to a probe 9 that can abut against the annular groove of the piston 15.

[0031] When the piston rod of cylinder 2 retracts, the probe 9 is 3-5mm lower than the tool; when the piston rod of cylinder 2 extends, the probe 9 is 5-8mm higher than the tool.

[0032] In this embodiment, the connecting seat 1 is disposed on the lathe and connected to one side of the cutting tool mounting seat 12 of the lathe 11. The lathe 11 is equipped with a displacement mechanism for moving the cutting tool mounting seat 12 along the X and Y axes, a spindle 14 for clamping and positioning the piston 15, and a controller for controlling the displacement mechanism and the power mechanism of the spindle 14. The controller is electrically connected to the drive mechanism, the displacement mechanism, the spindle power mechanism, and the detection switch 6, respectively.

[0033] The working process of this utility model is as follows:

[0034] First, adjust the positions of the detection switch 6 and the rotary block 8. Connect the compressed air pipe to the cylinder 2 to supply air to the cylinder. Control the solenoid valve to drive the piston rod of the cylinder 2 to extend or retract. The detection switch 6 is connected to the controller of the lathe 11 via the IO signal line. Install the connecting seat 1 on one side of the cutting tool mounting seat 12, ensuring that the probe 9 is 3-5mm lower than the cutting tool 14 when the cylinder 2 is in the retracted state, and 5-8mm higher than the cutting tool when the cylinder 2 is in the forward state. After the lathe 11 is started, the piston rod of the cylinder 2 can be controlled to extend and move to the designated position to detect the lower side of the annular groove. When the probe 9 contacts the side of the annular groove of the piston 15, the lathe 11 drives the connecting seat 1 and the probe 9 to continue moving along the negative Y-axis. At this time, the probe 9 is resisted by the annular groove and can be forced to rotate the second rotating end of the rotary block 8 counterclockwise, thereby causing the first rotating end of the rotary block 8 to rotate counterclockwise synchronously, so that it applies a force to the detection switch 6, compressing the elastic detection end 10, so that the detection switch 6 receives a signal and records the current absolute coordinate value.

[0035] After completing one coordinate detection, the lathe controls the spindle 14 to rotate 120°, causing the piston 15 on it to rotate once. Then, the above operation is repeated until three rotations are completed, and three measurements are completed by the probe 9. The algorithm of taking the average value of three-point detection can be used to calculate the distance from the top surface of the piston 15 to the side of the groove. The consistency of the annular groove distance is judged by the calculation result. The annular groove equipment is compensated and adjusted according to the difference. The chamfer is also adjusted according to the measurement data to reduce the influence of the groove distance difference on the chamfer size and achieve the purpose of contour machining.

[0036] This invention detects the position of the annular groove distance using a high-precision detection switch 6 to detect the position from the piston 15 stop end face to the annular groove. Precise machining is achieved by calculating the average value of three measurements, ensuring the consistency of the distance from the annular groove to the stop end face, eliminating the influencing factors of annular groove chamfering, and improving product machining accuracy.

[0037] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A piston ring groove distance detection device characterized by: It includes a connecting seat that can move along the X-axis and Y-axis. A detection seat that can move along the Y-axis is connected to the connecting seat via a drive mechanism. A detection switch and a rotary block are respectively connected to the detection seat. The rotary block is rotatably mounted on the detection seat via a fixed shaft in the Z-axis direction and a bearing. The rotary block has a first rotating end and a second rotating end. The first rotating end abuts against the elastic detection end of the detection switch, and the second rotating end is connected to a probe that can abut against the piston ring groove.

2. The piston ring groove distance detection device according to claim 1, characterized in that: The detection base includes a base plate and a vertical plate perpendicular to the base plate, with the detection switch connected through the vertical plate.

3. The piston ring groove distance detection apparatus according to claim 2, characterized by: The bottom of the base plate of the detection seat is connected to a slide, and a linear guide rail that slides with the slide is provided on the connecting seat along the Y-axis.

4. The piston ring groove distance detection apparatus according to claim 1, characterized by: When the drive mechanism retracts the connecting seat, the probe is 3-5mm lower than the tool; when the drive mechanism extends the connecting seat, the probe is 5-8mm higher than the tool.

5. The piston ring groove distance detection apparatus according to claim 1, characterized by: The connecting seat is mounted on the lathe and connected to one side of the lathe tool mounting seat. The lathe is equipped with a displacement mechanism for moving the X and Y axes of the tool mounting seat, a spindle for clamping and positioning the piston, and a controller for controlling the displacement mechanism and the spindle power mechanism. The controller is electrically connected to the drive mechanism, the displacement mechanism, the spindle power mechanism, and the detection switch, respectively.

6. The piston ring groove distance detection apparatus according to claim 1 or 5, characterized by: The drive mechanism is a cylinder.

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