An adaptive grinding tool for special-shaped curved surface parts

Abstract

The utility model relates to part processing technical field especially, and more particularly to a kind of self-adapting grinding tool for special-shaped curved surface parts.The utility model provides a kind of self-adapting grinding tool for special-shaped curved surface parts, including base and sliding plate etc., and the sliding plate is symmetrically slidably connected on base.The floating support unit consisting of sleeve, fixed rod and spring is set on the sliding plate, can automatically retract buffer when contacting part protruding area, effectively disperses local stress, prevents thin-walled or complex structure part from producing deformation or surface damage due to rigid compression, improves clamping safety and reliability, air bag is set between every four adjacent fixed rods, can flexible fill curved surface recessed area after inflation, form surface contact type support, make up the deficiency of point contact, significantly improve the continuity and adhesion of workpiece support, reduce vibration and displacement in the process of grinding, guarantee processing stability.

Description

Technical Field

[0001] This utility model relates to the field of parts processing technology, and in particular to an adaptive grinding fixture for irregular curved surface parts. Background Technology

[0002] The adaptive grinding fixture for irregular curved surface parts is an intelligent fixture system specifically designed for clamping and fixing parts with complex shapes and irregular surfaces. During the grinding process, it can automatically adapt to the curved surface contour, ensuring stable, accurate, and deformation-free processing.

[0003] With the development of high-end manufacturing, the application of irregular curved surface parts such as aero-engine blades, precision molds, and medical devices is becoming more and more widespread. These parts have complex shapes and high precision requirements, which puts forward higher requirements for the clamping effect of grinding. However, existing grinding fixtures have obvious shortcomings. First, they mostly adopt rigid structures, which cannot adapt to different curved surface shapes. When clamping, they are prone to excessive local stress, resulting in deformation and surface damage of thin-walled or complex parts. Second, they lack pressure sensing and automatic adjustment functions, resulting in uneven clamping force and poor support. Vibration or displacement is easily generated during grinding, which affects the processing quality.

[0004] To address the aforementioned technical issues, there is a need to provide an adaptive grinding fixture for irregularly shaped curved parts. Utility Model Content

[0005] To overcome the drawback of using rigid structures, which makes it impossible to adapt to different curved surface shapes, this utility model provides an adaptive grinding fixture for irregular curved surface parts.

[0006] The technical solution of this utility model is as follows: an adaptive grinding fixture for irregular curved surface parts, comprising a base, a sliding plate, an electric push rod, a sleeve, a fixed rod, a spring, an air bladder, a pressure sensor, a mounting plate, an air pump, an air pipe, an air valve, and a microcontroller. The base has sliding plates symmetrically connected to it. Electric push rods are symmetrically installed inside the base, distributed front and back. The telescopic end of each electric push rod is connected to a corresponding sliding plate. Multiple sleeves are provided on the inner side of each sliding plate. A fixed rod is slidably connected inside each sleeve. A spring is provided between each fixed rod and its corresponding sleeve. An air bladder is provided between every four adjacent fixed rods. A pressure sensor is symmetrically installed front and back inside each air bladder. A mounting plate is installed on each sliding plate. An air pump is installed on each mounting plate. An air pipe is connected to the air outlet of each air pump. Each air pipe branches off and connects to three corresponding air bladders. Three air valves are installed on each air pipe. A microcontroller is installed on each mounting plate.

[0007] Preferably, the device also includes mounting rods and a dust collection frame. Each sliding plate has mounting rods symmetrically arranged front and back, and a dust collection frame is installed at the bottom of each mounting rod.

[0008] Preferably, a first protective shell is also included, with each mounting plate having a first protective shell installed.

[0009] Preferably, a second protective shell is also included, with each mounting plate having a second protective shell installed.

[0010] Preferably, each airbag is made of polyurethane.

[0011] Preferably, each sliding plate has at least twelve sleeves.

[0012] The beneficial effects of this utility model are as follows: By setting a floating support unit consisting of a sleeve, a fixed rod, and a spring on the sliding plate, it can automatically retract and buffer when contacting the protruding area of ​​the part, effectively dispersing local stress and preventing deformation or surface damage to thin-walled or complex structure parts due to rigid clamping, thus improving clamping safety and reliability. An air bladder is set between every four adjacent fixed rods. After inflation, it can flexibly fill the concave area of ​​the curved surface to form a surface contact support, making up for the lack of point contact, significantly improving the continuity and fit of the workpiece support, reducing vibration and displacement during the grinding process, and ensuring processing stability. The air bladder integrates a pressure sensor to monitor the clamping force in real time and feed it back to the microcontroller. The system can dynamically adjust the air pump output and the opening and closing of the air valve according to the preset threshold, realizing zoned air supply and force-position coordinated control, ensuring that the clamping force is always within a safe and reasonable range, and the clamping process is precise and controllable. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the sliding plate, electric push rod, and sleeve of this utility model.

[0015] Figure 3 This is a cross-sectional view of the sleeve of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the mounting plate, air pump, and air pipe of this utility model.

[0017] The meanings of the reference numerals in the figure are as follows: 1: base, 2: sliding plate, 3: electric push rod, 4: sleeve, 5: fixing rod, 6: spring, 7: airbag, 8: pressure sensor, 9: mounting plate, 10: air pump, 11: air pipe, 12: air valve, 13: microcontroller, 14: mounting rod, 15: dust collection frame, 16: first protective shell, 17: second protective shell. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0019] Example: An adaptive grinding fixture for irregularly shaped curved surface parts, such as Figures 1-4As shown, the fixture includes a base 1, a sliding plate 2, an electric push rod 3, a sleeve 4, a fixing rod 5, a spring 6, an airbag 7, a pressure sensor 8, a mounting plate 9, an air pump 10, an air pipe 11, an air valve 12, a microcontroller 13, a mounting rod 14, a dust collection frame 15, a first protective shell 16, and a second protective shell 17. The sliding plate 2 is symmetrically slidably connected to the base 1. Electric push rods 3 are symmetrically installed inside the base 1, distributed front and back. The telescopic end of each electric push rod 3 is connected to the corresponding sliding plate 2. The electric push rods 3 provide the main driving force, driving the sliding plate 2 to move synchronously in opposite directions along the base 1, realizing the automatic opening and closing of the fixture. Initial clamping features controllable stroke and stable thrust. Each sliding plate 2 has multiple sleeves 4 on its inner side, with at least twelve sleeves 4 on each sliding plate 2. Each sleeve 4 has a fixed rod slidably connected inside, slidingly engaging with the sleeve 4 to form a point-contact support unit. During clamping, it first contacts the raised area on the part's surface, transmitting clamping force while allowing localized floating, achieving initial adaptive fit. A spring 6 is provided between each fixed rod 5 and its corresponding sleeve 4, and an airbag 7 is provided between every four adjacent fixed rods 5. Each airbag 7 is made of polyurethane, inflating and tightly fitting after inflation. The recessed areas on the surface of the parts form flexible surface supports, improving the continuity and uniformity of the support and enhancing the overall clamping stability. Each airbag 7 has pressure sensors 8 symmetrically installed front and rear inside, monitoring the air pressure changes within the airbag 7 in real time and converting them into clamping force signals that are fed back to the microcontroller 13, achieving online sensing and closed-loop control of the clamping force. Each sliding plate 2 is equipped with a mounting plate 9, and each mounting plate 9 is equipped with an air pump 10. Each air pump 10 has an air pipe 11 connected to its outlet. Each air pipe 11 branches off and connects to three corresponding airbags 7. Each air pipe 11 is equipped with three air valves 12. A microcontroller 13 is installed on the mounting plate 9, serving as the intelligent control center of the tooling. It receives pressure sensor signals 8 and coordinates the working status of the electric push rod 3, air pump 10, and air valve 12 to achieve collaborative control and automated operation logic. Each sliding plate 2 is symmetrically equipped with mounting rods 14, and each mounting rod 14 is equipped with a dust collection frame 15 at its bottom. With the help of an external dust collection device, it adsorbs the metal dust and coolant splashes generated during the grinding process, keeping the processing environment clean and preventing pollution and secondary scratches. Each mounting plate 9 is equipped with a first protective shell 16 and a second protective shell 17.

[0020] When using this adaptive grinding fixture, the irregular curved surface part to be processed is first placed between two sliding plates 2. Then, the microcontroller 13 is activated. The microcontroller 13 starts and receives instructions to coordinate the control of each execution unit. The electric push rods 3, which are symmetrically arranged on the left and right sides inside the base 1, extend synchronously, pushing the sliding plates 2 connected to them to slide towards each other along the base 1, thereby achieving initial clamping of the part. During the clamping process, the fixing rods 5 in the multiple sleeves 4 inside each sliding plate 2 first contact the surface of the part. Since the surface of the part is an irregular curved surface, each fixing rod 5 retracts under force when it contacts the protruding area, compressing the spring 6 between it and the sleeve 4, achieving local buffering and adaptive fit, effectively avoiding deformation of the part caused by stress concentration. At the same time, the air pump 10 on the mounting plate 9 is activated, delivering compressed air to each air bag 7 through the air pipe 11. Each air pipe 11 is divided into... The support is connected to three corresponding airbags 7, and the air valves 12 on each branch pipe are independently controlled by the microcontroller 13, which can realize zoned air supply. After inflation, the airbags 7 expand to fill the gaps between the four adjacent fixing rods 5 and fit tightly against the concave areas on the surface of the parts, further improving the continuity and uniformity of the support. Pressure sensors 8 are symmetrically installed inside each airbag 7 to monitor the internal air pressure in real time and feed the data back to the microcontroller 13 to form a closed-loop control. The microcontroller 13 dynamically adjusts the output of the air pump 10 and the opening and closing of the air valves 12 according to the preset pressure threshold to ensure that the clamping force is stable within a safe and reasonable range and to achieve coordinated control. In addition, during the grinding process, multiple dust collection frames 15 can be connected to external dust collection equipment. After the external dust collection equipment is started, it effectively adsorbs the dust and coolant splashes generated in the grinding area, keeps the processing environment clean, and improves the surface quality.

[0021] It should be understood that the above description is for illustrative purposes only and is not intended to limit the present invention. Those skilled in the art will understand that variations of the present invention will be included within the scope of the claims herein.

Claims

1. An adaptive grinding fixture for irregularly shaped curved surface parts, characterized in that, The system includes a base (1), a sliding plate (2), an electric push rod (3), a sleeve (4), a fixing rod (5), a spring (6), an airbag (7), a pressure sensor (8), a mounting plate (9), an air pump (10), an air pipe (11), an air valve (12), and a microcontroller (13). The base (1) is symmetrically connected to the sliding plate (2). The base (1) is symmetrically installed with electric push rods (3) distributed front and back. The telescopic end of each electric push rod (3) is fixedly connected to the corresponding sliding plate (2). Twelve sleeves (4) are installed on the opposite side of the two sliding plates (2). Each sleeve (4) is slidably connected to a fixing rod. 5) A spring (6) is provided between each fixed rod (5) and the corresponding sleeve (4). An airbag (7) is installed between every four adjacent fixed rods (5). A pressure sensor (8) is symmetrically installed inside each airbag (7). An installation plate (9) is installed on the top of each sliding plate (2). An air pump (10) is installed on the top of each installation plate (9). An air pipe (11) is fixedly connected to the air outlet of each air pump (10). Each air pipe (11) branches and connects to the corresponding three airbags (7). Three air valves (12) are installed on each air pipe (11). A microcontroller (13) is installed on the front side of the top of each installation plate (9).

2. The adaptive grinding fixture for irregularly shaped curved surface parts according to claim 1, characterized in that, It also includes mounting rods (14) and dust collection frames (15). Mounting rods (14) are installed on both sides of the front of each sliding plate (2), and dust collection frames (15) are installed at the bottom of each mounting rod (14).

3. An adaptive grinding fixture for irregularly shaped curved surface parts according to claim 2, characterized in that, It also includes a first protective shell (16), with the first protective shell (16) installed on the top of each mounting plate (9).

4. An adaptive grinding fixture for irregularly shaped curved surface parts according to claim 3, characterized in that, It also includes a second protective shell (17), which is installed on the front top of each mounting plate (9).

5. An adaptive grinding fixture for irregularly shaped curved surface parts according to claim 4, characterized in that, Each airbag (7) is made of polyurethane.

6. An adaptive grinding fixture for irregularly shaped curved surface parts according to claim 5, characterized in that, The number of sleeves (4) on each sliding plate (2) is at least twelve.

Images