CN218785451U

CN218785451U - Large-diameter-ratio polishing device for inner surface of stepped hole circular tube

Info

Publication number: CN218785451U
Application number: CN202222552224.6U
Authority: CN
Inventors: 李吉勇; 范增华; 杨自豪; 田业冰; 高军
Original assignee: Shandong University of Technology
Current assignee: Shandong University of Technology
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-04-04
Anticipated expiration: 2032-09-27

Abstract

The utility model discloses a big diameter ratio shoulder hole pipe inner surface burnishing device belongs to the internal surface polishing field, the device includes the arm, point polishing bone chain, the ring flange, circular chassis, cylindrical gentle elasticity atmospheric pressure rubber tube, the condyle, rectangular resistance type flexible film pressure sensor, screw rod shape inductance type proximity switch position sensor and polishing pad, executive device adopts three identical finger polishing bone chain to constitute, burnishing device's flexibility has been guaranteed, position sensor and pressure sensor are equipped with on the condyle, can adjust in real time acting pressure and working gap between finger polishing bone chain and the work piece internal surface through the feedback to the controller, guarantee polishing pressure's among the polishing process invariant and polishing position's accurate positioning, control the pressure of the compressed gas who lets in cylindrical gentle elasticity atmospheric pressure rubber tube through the proportional valve in the pneumatic circuit, make whole condyle can take place the bending to the equidirectional emergence, deflect, guarantee the controllability and the space suitability of device.

Description

Large-diameter-ratio polishing device for inner surface of stepped hole circular tube

Technical Field

The utility model belongs to the technical field of the internal surface polishing, concretely relates to big diameter ratio shoulder hole pipe internal surface burnishing device is applicable to the polishing to complicated shape pipe internal surface such as heavy-calibre, abnormal surface and shoulder hole.

Background

In recent years, with the rapid development of the fields of machinery, medical treatment, aviation, chemistry and the like, higher requirements are also put on polishing processing technologies of various parts, wherein the inner surface processing of parts with complex shapes such as large diameter ratio, special-shaped surfaces, stepped holes and the like in the mechanical parts accounts for about 1/3 of the total amount of the mechanical processing, and the processing quality of the inner surface has important influence on the service performance and the service life of the parts and products thereof.

In the prior art, the defects or micro defects left in the heat treatment process are generally treated by workers in a manual grinding mode, the method is time-consuming, labor-consuming and low in efficiency, manual grinding can only be effective at two ends of the pipe, the inner surface of the whole metal stepped hole cannot be treated, and the method has a certain effect but cannot meet the use requirement. At present, tubular parts are rarely long straight pipes with single structures and are mostly complex shapes such as large calibers, special-shaped surfaces and stepped holes, and the existing polishing device is difficult to make corresponding adjustment and accurately control polishing pressure on the surface according to different inner diameters of the stepped holes.

Disclosure of Invention

The utility model provides a help showing and improve shoulder hole internal surface polishing efficiency and alleviate workman intensity of labour, be favorable to ensureing polishing quality and non-staining environment's internal surface polishing device, it can overcome prior art device and can not carry out real-time adjustment according to the internal diameter change of shoulder hole, does not have the defect that can be flexible and can not the accurate control to the polishing pressure on surface.

The utility model adopts the technical proposal that: the device includes arm and final controlling element, final controlling element includes ring flange, circular chassis, rectangle round pin support, bolt and finger polishing bone chain, finger polishing bone chain includes cylindrical gentle elasticity atmospheric pressure rubber tube, fixed bolster and condyle, the condyle includes connecting pin, rectangular resistance type flexible film pressure sensor, screw rod shape inductive proximity switch position sensor and polishing pad, cylindrical gentle elasticity atmospheric pressure rubber tube includes left end housing, rubber tube, spiral steel wire, right-hand member lid and business turn over gas interface, the ring flange is equipped with to the arm end, and six screw holes that circular chassis passes through bolt and ring flange cooperate, be fixed with 3 rectangle round pin supports on the circular chassis, 3 rectangle round pin supports fix 3 finger polishing bone chains respectively on circular chassis through the pin junction, finger polishing bone chain comprises 11 condyle that length equals, the condyle links together through the connecting pin junction, screw rod shape inductive proximity switch position sensor installs in condyle intermediate position department, rectangular flexible film pressure sensor is attached on condyle surface, carries out the data line through the inside through the condyle with the external control ware and the polishing bone joint is connected through the cylindrical flexible film pressure rubber tube, and the polishing rubber tube is connected in proper order and is attached at the outer side through the polishing rubber tube, and the polishing rubber tube is connected in order, and the polishing process is realized that 11 cylindrical flexible film pressure sensor is attached on the outer side.

Preferably, the top of the topmost condyle is sealed, and no pin hole is required at the top.

Preferably, the finger polishing bone chains can move simultaneously and have extremely high flexibility.

Preferably, the rectangular pin supports are distributed in 120 degrees and are perpendicular to a straight line passing through the circle center of the circular base plate, so that the polishing pad is matched with the inner surface of the stepped hole.

The utility model discloses a realize the polishing of big diameter ratio shoulder hole pipe inner surface, can realize according to following step:

the method comprises the following steps: the controller drives the pneumatic system to respond, compressed gas is introduced into the cylindrical flexible and elastic pneumatic rubber tube through the control of the switch type electric proportional valve, the screw-shaped inductive proximity switch position sensor and the long-strip resistive flexible film pressure sensor on the bone joint feed back to the controller in real time according to the distance from the inner surface and the polishing pressure generated by sensing the attachment of the finger polishing bone chain on the inner surface to adjust and control the pressure of the introduced compressed gas, and each bone joint forms different bending states, so that the finger polishing bone chain finishes the attachment of the inner surface of the stepped hole, and the same polishing pressure is provided at the same time, so that the polishing effect is more uniform;

step two: when the screw rod-shaped inductive proximity switch position sensor and the long-strip resistive flexible film pressure sensor meet the polishing requirement, the controller controls the mechanical arm to drive the whole execution device to rotate, and the polishing pad polishes the inner surface;

step three: after polishing, the controller sends a stop signal, the execution device stops working, compressed gas in the inner cavity of the cylindrical flexible elastic air pressure rubber tube is released through the air outlet of the switch type electric proportional valve in the air pressure loop, the cylindrical flexible elastic air pressure rubber tube is restored to an initial state under the action of elastic force of the rubber tube, and therefore the finger polishing bone chain is retracted to the original position, the mechanical arm moves along the axial direction of the workpiece, and the execution device is retracted.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the polishing device for the inner surface of the circular tube with the large diameter ratio of the stepped hole is characterized in that the actuating device is composed of three completely same finger polishing bone chains, and the flexible control of the finger polishing bone chains realizes the high-efficiency and high-quality polishing of the stepped holes with different inner diameters; 2. the utility model discloses a polishing device of inner surface of a large-diameter-ratio stepped hole circular tube, a screw-shaped inductive proximity switch position sensor and a long-strip resistive flexible film pressure sensor are arranged on a condyle, the acting pressure and the working clearance between a finger polishing bone chain and the inner surface of a workpiece can be adjusted in real time through the feedback regulation and control of a controller, and the constancy of the polishing pressure applied to the inner surface of the workpiece in the polishing process and the accurate positioning of the polishing position are ensured; 3. a burnishing device of major diameter ratio shoulder hole inner surface of round tube, through the gaseous pressure of compressed gas in the switch type electric proportional valve control among the pneumatic circuit lets in cylindrical gentle elasticity atmospheric pressure rubber tube, make each condyle can take place crooked, deflect, guarantee burnishing device's controllability and space suitability.

Drawings

Fig. 1 is a schematic view of the three-dimensional overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the three-dimensional actuator of the present invention.

Fig. 3 is a schematic view of the structure of the three-dimensional finger polishing bone chain of the present invention.

Fig. 4 is a schematic view of the three-dimensional bone segment structure of the present invention.

Fig. 5 is the structural schematic diagram of the cylindrical flexible elastic pneumatic rubber tube of the present invention.

Detailed Description

For a further understanding of the invention, reference will now be made in detail to the embodiments illustrated in the drawings and described in connection with the following examples, which are to be construed as merely illustrative and not a restrictive sense.

The first embodiment is as follows: the device of the embodiment is described by combining fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, and comprises a mechanical arm (1-1) and an execution device (1-2), wherein the execution device (1-2) comprises a flange (2-1), a circular base plate (2-2), a rectangular pin support (2-3), a bolt (2-4) and a finger polishing bone chain (2-5), the finger polishing bone chain (2-5) comprises a cylindrical flexible air pressure rubber tube (3-1), a fixed support (3-2) and a condyle (3-3), the condyle (3-3) comprises a connecting pin (4-1), a resistive flexible film pressure sensor (4-2), a screw-shaped inductive proximity switch position sensor (4-3) and a polishing pad (4-4), the cylindrical flexible air pressure rubber tube (3-1) comprises a left end cover (5-1), a rubber tube (5-2), a spiral steel wire (5-3), a right end cover (5-4) and an air inlet and outlet interface (5-5), the terminal of the circular base plate (2-1) is matched with the bolt (2-1) through the flange (2-1), the six threaded hole (2-1), the polishing device is characterized in that 3 rectangular pin supports (2-3) are fixed on the circular base plate (2-2), the 3 rectangular pin supports (2-3) are connected through pins to fix 3 finger polishing bone chains (2-5) on the circular base plate (2-2), the finger polishing bone chains (2-5) are composed of 11 bone joints (3-3) with equal lengths, the bone joints (3-3) are connected together through connecting pins (4-1), the screw-shaped inductive proximity switch position sensor (4-3) is installed in the middle of the bone joints (3-3), the long-strip resistive flexible film pressure sensor (4-2) is attached to the surface of the bone joints (3-3), data line connection is carried out between the internal through holes of the bone joints (3-3) and an external controller, the cylindrical flexible air pressure rubber tube (3-1) is used for sequentially connecting the 11 bone joints (3-3) with the equal lengths through the fixing supports (3-2), the polishing pads (4-4) are attached to the outermost side of the bone joints (3-3), and the polishing device (1-1) is driven to rotate through the polishing device (2).

The second embodiment is as follows: the execution device (1-2) of the embodiment is described by combining fig. 2, fig. 3 and fig. 4 and is composed of three identical finger polishing bone chains (2-5), bone sections (3-3) are connected through connecting pins (4-1), the execution device is composed of a circular chassis (2-2), the posture adjustment of the whole polishing device is realized by using a mechanical arm (1-1), the execution device is suitable for more complex space, and the rest is the same as that of the specific embodiment.

The third concrete implementation mode: the embodiment is described by combining fig. 3 and 4, wherein a screw-shaped inductive proximity switch position sensor (4-3) and a strip-shaped resistive flexible film pressure sensor (4-2) are fixed on a condyle (3-3), and the screw-shaped inductive proximity switch position sensor (4-3) feeds back to a controller in real time according to the distance from the inner surface to adjust and control the movement of a polishing device, so as to realize the accurate positioning of the polishing position; the strip-shaped resistance-type flexible film pressure sensor (4-2) senses the pressure generated when the finger polishing bone chain (2-5) is attached to the surface of the workpiece, and the constant polishing pressure applied to the inner surface of the workpiece in the polishing process is ensured through feedback adjustment of the pressure sensor and a controller, and the rest is the same as the first embodiment or the second embodiment.

The fourth concrete implementation mode: the present embodiment will be described with reference to fig. 5, in which the pressure of the compressed gas introduced into the cylindrical flexible pneumatic rubber tube (3-1) is controlled by the switch type electric proportional valve in the pneumatic circuit, so that the cylindrical flexible pneumatic rubber tube (3-1) is subjected to different degrees of elongation deformation, and the condyle (3-3) can be bent and deflected in different directions, and the spirally wound steel wires are uniformly distributed in the wall of the cylindrical flexible pneumatic rubber tube (3-1) along the circumferential direction to limit the radial expansion of the rubber shell, and a single cylindrical flexible pneumatic rubber tube (3-1) can be considered to be subjected to elongation deformation only in the axial direction when being inflated, and the other embodiments are the same as the first, second or third embodiment.

The fifth concrete implementation mode: the following description is provided with reference to fig. 1, fig. 2, fig. 3, and fig. 4 to realize the polishing of the inner surface of the stepped hole circular tube with a large diameter ratio, and the specific working process is as follows:

the method comprises the following steps: the controller drives the pneumatic system to respond, compressed gas is introduced into the cylindrical flexible elastic pneumatic rubber tube (3-1) through the control of the switch type electric proportional valve, the screw-shaped inductive proximity switch position sensor (4-3) on the condyle (3-3) and the long-strip resistive flexible film pressure sensor (4-2) feed back to the controller in real time according to the distance from the inner surface and the polishing pressure generated by sensing the attachment of the finger polishing bone chain (2-5) on the inner surface to adjust and control the pressure of the introduced compressed gas, and each condyle (3-3) forms different bending states, so that the finger polishing bone chain (2-5) completes the attachment of the inner surface of the stepped hole, and the same polishing pressure is provided at the same time, and the polishing effect is more uniform;

step two: when the screw rod-shaped inductive proximity switch position sensor (4-3) and the long-strip resistive flexible film pressure sensor (4-2) meet the polishing requirement, the controller controls the mechanical arm (1-1) to drive the whole execution device (1-2) to rotate, and the polishing pad (4-4) polishes the inner surface;

step three: after polishing is finished, the controller sends out a stop signal, the execution device (1-2) stops working, compressed gas in the inner cavity of the cylindrical flexible elastic air pressure rubber tube (3-1) is released through an air inlet and an air outlet (5-5) of a switch type electric proportional valve in an air pressure loop, the cylindrical flexible elastic air pressure rubber tube (3-1) is restored to an initial state under the action of elastic force of the rubber tube, so that the finger polishing bone chain (2-5) is retracted to an original position, and the mechanical arm (1-1) moves along the axial direction of a workpiece to enable the execution device (2-5) to be retracted.

The description is not intended to be limiting, and the embodiments shown in the drawings are merely examples of the present invention, and the actual configuration is not limited thereto. Therefore, those skilled in the art should understand that they can make various changes, substitutions and alterations herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The polishing device for the inner surface of the large-diameter-ratio stepped hole circular tube is characterized by comprising a mechanical arm (1-1) and an executing device (1-2), wherein the executing device (1-2) comprises a flange plate (2-1), a circular base plate (2-2), a rectangular pin support (2-3), a bolt (2-4) and a finger polishing bone chain (2-5), the finger polishing bone chain (2-5) comprises a cylindrical flexible elastic air pressure rubber tube (3-1), a fixed support (3-2) and a bone joint (3-3), the bone joint (3-3) comprises a connecting pin (4-1), a strip resistive flexible film pressure sensor (4-2), a screw rod-shaped inductive proximity switch position sensor (4-3) and a polishing pad (4-4), the cylindrical flexible elastic air pressure rubber tube (3-1) comprises a left end cover (5-1), a rubber tube (5-2), a right end spiral steel wire (5-3), a cover (5-4) and an air inlet and outlet port (5-5), the tail end of the flange plate (1-5) is matched with the six threaded hole (2-1) through the flange plate (2-1), the polishing device is characterized in that 3 rectangular pin supports (2-3) are fixed on the circular base plate (2-2), the 3 rectangular pin supports (2-3) are connected through pins to fix 3 finger polishing bone chains (2-5) on the circular base plate (2-2), the finger polishing bone chains (2-5) are composed of 11 bone joints (3-3) with equal lengths, the bone joints (3-3) are connected together through connecting pins (4-1), the screw-shaped inductive proximity switch position sensor (4-3) is installed in the middle of the bone joints (3-3), the long-strip resistive flexible film pressure sensor (4-2) is attached to the surface of the bone joints (3-3), data line connection is carried out between the internal through holes of the bone joints (3-3) and an external controller, the cylindrical flexible air pressure rubber tube (3-1) is used for sequentially connecting the 11 bone joints (3-3) with the equal lengths through the fixing supports (3-2), the polishing pads (4-4) are attached to the outermost side of the bone joints (3-3), and the polishing device (1-1) is driven to rotate through the polishing device (2).

2. The device for polishing the inner surface of the circular tube with the large diameter ratio of the stepped hole as claimed in claim 1, wherein the actuating device (1-2) is composed of three identical finger polishing bone chains (2-5), and the flexible control of the finger polishing bone chains (2-5) realizes high-efficiency and high-quality polishing of stepped holes with different inner diameters.

3. The device for polishing the inner surface of the circular tube with the large diameter ratio of the stepped hole as claimed in claim 1, wherein a screw-shaped inductive proximity switch position sensor (4-3) and a strip-shaped resistive flexible film pressure sensor (4-2) are arranged on the bone segments (3-3), and the action pressure and the working clearance between the finger polishing bone chain and the inner surface of the workpiece can be adjusted in real time through feedback regulation and control of the controller, so that the constant polishing pressure applied to the inner surface of the workpiece and the accurate positioning of the polishing position are ensured in the polishing process.

4. The device for polishing the inner surface of the circular tube with the large diameter ratio and the stepped hole as claimed in claim 1, wherein the pressure of compressed gas introduced into the cylindrical flexible and elastic pneumatic rubber tube (3-1) is controlled by a switch type electric proportional valve in a pneumatic circuit, so that each condyle (3-3) can be bent and deflected, and controllability and space applicability of the polishing device are ensured.