An engine piston machining device with self-positioning function

Abstract

The application relates to the technical field of engine machining, and discloses an engine piston machining device with a self-positioning function, which comprises a base plate, a plurality of clamping pieces slidably arranged on the base plate, and a driving assembly for driving the clamping pieces to synchronously act. The clamping piece is composed of an outer frame and a slidable clamping end, and an expansion piece for fine adjustment is arranged between the two, which can finely compensate the clamping position. Laser range finders with mutually perpendicular measuring directions are arranged on the outer side of the base plate, which can monitor the position deviation of the clamped piston in real time. The device realizes stable clamping of the piston by combining synchronous clamping and fine adjustment, and realizes real-time monitoring and self-positioning correction of the position in cooperation with vertical double-direction laser ranging, significantly improves the clamping precision and machining consistency of the piston, has compact structure and high automation degree, and is suitable for high-precision machining of engine pistons.

Description

Technical Field

[0001] This invention relates to the field of engine machining, and in particular to an engine piston machining apparatus with a self-positioning function. Background Technology

[0002] As a core moving component of the engine, the engine piston requires extremely high coaxiality and positioning accuracy during machining. Traditional piston machining fixtures are mostly fixed structures or manually adjustable clamping, which not only have low clamping efficiency but also make it difficult to ensure synchronous feed at each clamping point, easily causing piston eccentricity and uneven force distribution. At the same time, most existing devices lack online position detection and automatic correction functions, and the clamping gap cannot be micro-compensated, making it easy for positioning offsets to occur during machining. This results in the piston roundness and dimensional accuracy being difficult to consistently meet standards, affecting engine assembly performance and service life. Therefore, this invention proposes an engine piston machining device with self-positioning function to solve the above problems. Summary of the Invention

[0003] To address the aforementioned problems, the present invention provides an engine piston machining apparatus with a self-positioning function.

[0004] The present invention provides an engine piston machining device with self-positioning function, which adopts the following technical solution:

[0005] A self-positioning engine piston machining apparatus includes a base plate, on which clamping members are slidably connected, and on the back of the base plate is a drive assembly for transmitting the clamping members. The drive assembly transmits the clamping members to move synchronously toward the center or toward the outside.

[0006] The clamping component includes an outer frame and a clamping end slidably connected to one side of the outer frame. An expansion member is provided between the outer frame and the clamping end, and the expansion member is used to fine-tune the position of the clamping end.

[0007] A laser rangefinder is provided on the outer side of the substrate to monitor the position of the object held on the substrate, and the laser rangefinder is set perpendicular to the measuring direction.

[0008] Preferably, the outer frame is recessed, and a groove is formed on the inner wall of the recessed position. The clamping member is located on the opening side of the recessed outer frame, and a sliding rod that cooperates with the groove is fixedly connected to the clamping end so that the movement trend of the clamping end is consistent with the clamping direction.

[0009] Preferably, an expansion member is provided at the recessed position of the outer frame, and the two sides of the expansion member are in contact with the outer frame and the clamping end through a pad, respectively.

[0010] Preferably, the expansion member is driven by hydraulic oil.

[0011] Preferably, a connecting rod is fixedly connected to one end of the clamping member near the substrate, and a threaded pair is fixedly connected to the end of the connecting rod.

[0012] Preferably, the driving component includes a transmission component fixed at the center of the back of the substrate, the input end of the transmission component is connected to a motor that drives it, and the output end of the transmission component is fixedly connected to a screw, with the screw and the threaded pair being threadedly connected.

[0013] Preferably, the substrate has a sliding groove, and the connecting rod of the clamping member is slidably embedded in the sliding groove.

[0014] Preferably, a linear module a is fixedly connected to the X-axis side of the substrate, and a laser rangefinder a is installed at the output end of the linear module a;

[0015] A linear module b is fixedly connected to the side of the substrate in the Y-axis direction, and a laser rangefinder b is installed at the output end of the linear module b.

[0016] In summary, the present invention has at least one of the following beneficial technical effects:

[0017] The drive assembly enables synchronous centripetal or centrifugal motion of multiple clamping components, resulting in high clamping efficiency and uniform piston force. The clamping end can be compensated for micro-displacement through expansion components to eliminate clamping gaps and avoid piston eccentricity or damage. With the help of two sets of vertically arranged laser rangefinders to monitor the position in real time, deviations can be quickly identified and self-positioning correction can be achieved, which greatly improves the piston processing positioning accuracy and product qualification rate. Attached Figure Description

[0018] Figure 1 This is an isometric structural schematic diagram of an embodiment of the invention.

[0019] Figure 2 This is a rear-view isometric structural schematic diagram of an embodiment of the invention.

[0020] Figure 3 This is a schematic diagram of the clamping member structure according to an embodiment of the invention.

[0021] Figure 4 This is an exploded view of the clamping component according to an embodiment of the invention.

[0022] Explanation of reference numerals in the attached drawings: 1. Base plate; 11. Slide groove; 3. Clamping component; 31. Outer frame; 311. Groove; 32. Clamping end; 321. Slide rod; 33. Pad; 34. Expansion component; 5. Linear module a; 51. Laser rangefinder a; 6. Linear module b; 61. Laser rangefinder b; 7. Motor; 8. Transmission assembly; 9. Screw; 10. Threaded pair; 12. Connecting rod. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4The present invention will be described in further detail below.

[0024] Example 1: Refer to Figure 1 - Figure 4 A machining device for engine pistons with self-positioning function.

[0025] (a) Equipment assembly

[0026] First, fix the motor 7 of the drive component to the center of the back of the substrate 1. Connect the transmission component 8 to the output end of the motor 7. Then, rotatably connect the four screws 9 to the output end of the transmission component 8 respectively, ensuring that the screws 9 are arranged along the diagonal direction of the substrate 1.

[0027] Slide the connecting rod 12 of the clamping member 3 into the slide groove 11 of the base plate 1, so that the threaded pair 10 is threadedly connected to the corresponding screw 9, and complete the assembly of the clamping member 3 and the drive assembly.

[0028] Fix the linear module a5 to the X-axis side of the substrate 1 and install the laser rangefinder a51; fix the linear module b6 to the Y-axis side of the substrate 1 and install the laser rangefinder b61, ensuring that the laser rangefinder a51 and the laser rangefinder b61 are perpendicular to each other in the measurement direction.

[0029] Connect motor 7, laser rangefinder a51, laser rangefinder b61, linear module a5, and linear module b6 to the external control system to complete the overall assembly of the device.

[0030] (II) Piston clamping and positioning

[0031] The engine piston to be processed is placed at the center of the base plate 1. The external control system starts the motor 7, which drives the transmission component 8 to operate. The transmission component 8 synchronously drives the four screws 9 to rotate. Through the threaded engagement of the threaded pair 10, the four clamping parts 3 are driven to move synchronously along the slide groove 11 towards the center of the base plate 1 until the clamping end 32 initially contacts the side wall of the piston.

[0032] When the expansion component 34 is activated, it extends and retracts via hydraulic drive, pushing the clamping end 32 to make a slight adjustment along the direction of the groove 311, so that the anti-slip clamping surface of the clamping end 32 is completely in contact with the piston sidewall, thus completing the precise clamping of the piston.

[0033] (III) Self-positioning monitoring and correction

[0034] Laser rangefinder a51 monitors the piston's position in real time along the X-axis, and laser rangefinder b61 monitors the piston's position in real time along the Y-axis, and transmits the monitoring data to the external control system in real time.

[0035] The external control system analyzes the received position data. When it detects that the displacement deviation of the piston in the X-axis or Y-axis direction exceeds the preset threshold, it sends a control command: on the one hand, it controls the linear module a5 or the linear module b6 to fine-tune the position of the laser rangefinder, and on the other hand, it controls the motor 7 to drive the drive component to fine-tune the displacement of the clamping part 3. The position of the piston is corrected by fine-tuning the position of the clamping part 3 until the piston position is within the preset accuracy range.

[0036] After the piston is positioned, the external processing equipment processes the piston. During the processing, the laser rangefinder continuously monitors the piston position. If a displacement deviation occurs, the above correction steps are repeated to ensure processing accuracy.

[0037] (iv) Unloading of the workpiece

[0038] After the piston is processed, the external control system starts the motor 7 to run in reverse. The drive component drives the four clamping parts 3 to move outward synchronously along the slide groove 11. At the same time, the expansion part 34 retracts, the clamping end 32 releases the piston, and the operator can remove the processed piston from the base plate 1.

[0039] V. Supplementary Examples

[0040] In this embodiment, the expansion member 34 is a hydraulic cylinder, and the oil inlet of the hydraulic cylinder is connected to an external hydraulic pump station. By controlling the oil supply pressure of the hydraulic pump station, the extension and retraction of the expansion member 34 can be adjusted to achieve precise control of the fine-tuning displacement of the clamping end 32. The inner wall of the slide groove 11 is smoothly designed to reduce the friction during the sliding process of the connecting rod 12 and improve the smoothness of the displacement of the clamping member 3. The laser rangefinder is an infrared laser rangefinder with a measurement accuracy of ±0.01mm, which meets the high-precision positioning requirements of piston processing.

[0041] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machining apparatus for engine pistons with self-positioning function, characterized in that: Includes a substrate (1), on which a clamping member (3) is slidably connected, and on the back of the substrate (1) is a drive assembly for transmitting the clamping member (3), the drive assembly transmits each clamping member (3) to move synchronously toward the center or toward the outside. The clamping member (3) includes an outer frame (31) and a clamping end (32) slidably connected to one side of the outer frame (31). An expansion member (34) is provided between the outer frame (31) and the clamping end (32). The expansion member (34) is used to fine adjust the position of the clamping end (32). A laser rangefinder is provided on the outer side of the substrate (1) to monitor the position of the object held on the substrate (1), and the laser rangefinder is set perpendicular to the measuring direction.

2. The engine piston machining device with self-positioning function according to claim 1, characterized in that: The outer frame (31) is recessed, and a groove (311) is provided on the inner wall of the recessed position. The clamping member (3) is located on the opening side of the recessed outer frame (31), and a slide rod (321) that cooperates with the groove (311) is fixedly connected to the clamping end (32) so that the movement trend of the clamping end (32) is consistent with the clamping direction.

3. The engine piston machining apparatus with self-positioning function according to claim 2, characterized in that: An expansion member (34) is provided at the recessed position of the outer frame (31), and the two sides of the expansion member (34) are in contact with the outer frame (31) and the clamping end (32) respectively through the pad (33).

4. The engine piston machining apparatus with self-positioning function according to claim 3, characterized in that: The expansion member (34) is driven by hydraulic oil.

5. The engine piston machining apparatus with self-positioning function according to claim 1, characterized in that: The clamping member (3) is fixedly connected to a connecting rod (12) at one end near the base plate (1), and the end of the connecting rod (12) is fixedly connected to a threaded pair (10).

6. The engine piston machining apparatus with self-positioning function according to claim 5, characterized in that: The drive assembly includes a transmission assembly (8) fixed at the center of the back of the substrate (1). The input end of the transmission assembly (8) is connected to a motor (7) that drives it. The output end of the transmission assembly (8) is fixedly connected to a screw (9). The screw (9) and the threaded pair (10) are threaded together.

7. The engine piston machining apparatus with self-positioning function according to claim 5, characterized in that: A groove (11) is provided on the substrate (1), and the connecting rod (12) of the clamping member (3) is slidably embedded in the groove (11).

8. The engine piston machining apparatus with self-positioning function according to claim 1, characterized in that: A linear module a (5) is fixedly connected to the X-axis side of the substrate (1), and a laser rangefinder a (51) is installed at the output end of the linear module a (5). A linear module b (6) is fixedly connected to the side of the substrate (1) in the Y-axis direction, and a laser rangefinder b (61) is installed at the output end of the linear module b (6).

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