A precision inner hole finishing and polishing mechanism for parts and a polishing method

Abstract

The application discloses a precision part inner hole trimming and polishing mechanism and a polishing method, which comprise a rotating base, a longitudinal guide rail fixed to one side of the outer wall of the rotating base, a driving base movably connected to the longitudinal guide rail, an air cylinder fixedly connected to the bottom end of the outer wall of the driving base and an external air supply pipe fixedly connected to the inside of the driving base, and further comprise: a polishing mechanism connected to the output end of the driving base; a supporting mechanism connected to one side of the polishing mechanism and fixedly connected with the output end of the air cylinder; a screen and a magnet installed on the supporting mechanism; the polishing mechanism comprises: a grinding wheel, the top end of which is fixedly connected with a linkage branch pipe in communication, and the output end of the driving base is connected with the linkage branch pipe; a square sliding groove which is arranged through the grinding wheel; the precision part inner hole trimming and polishing mechanism and the polishing method have the effect that the inner hole inner wall of the position to be polished can be cleaned in advance, so that the adhered debris cannot cause scratches.

Description

Technical Field

[0001] This invention relates to the field of parts processing technology, and in particular to a grinding mechanism and grinding method for the inner hole of precision parts. Background Technology

[0002] In the process of finishing and grinding the inner holes of precision parts, secondary scratches caused by debris are one of the core issues affecting machining quality. Their formation mechanism mainly manifests in the following two aspects:

[0003] I. Grinding debris generation

[0004] Metal particles are generated by the friction between the grinding wheel and the workpiece, and remain in the hole when the centrifugal force is insufficient.

[0005] II. Dynamic Adhesion Behavior

[0006] The debris is squeezed and embedded into the surface of the softened material by the cutting force, forming a mechanical anchoring effect.

[0007] Existing processing methods include:

[0008] 1. High-pressure coolant flushing requires a large pressure to ensure complete removal of debris, which may erode the machined surface of the inner hole;

[0009] Second, negative pressure suction, but the suction efficiency will be greatly reduced in deep hole structures;

[0010] Third, ultrasonic assistance can reduce the adhesion rate, but it will cause pore size to increase. Summary of the Invention

[0011] This invention discloses an internal hole dressing and grinding mechanism and grinding method for precision parts, aiming to solve the technical problem of reducing the impact on workpiece grinding while achieving complete debris removal.

[0012] To achieve the above objectives, the present invention adopts the following technical solution:

[0013] A precision component internal hole finishing and grinding mechanism includes a rotating base, a longitudinal guide rail fixed to one outer wall of the rotating base, a drive seat movably connected to the longitudinal guide rail, an air rod fixedly connected to the bottom outer wall of the drive seat, and an external air supply pipe fixedly connected inside the drive seat. It also includes: a grinding mechanism connected to the output end of the drive seat; a support mechanism connected to one side of the grinding mechanism and fixedly connected to the output end of the air rod; and a mesh and a magnet mounted on the support mechanism.

[0014] The grinding mechanism includes: a grinding wheel, the inner wall of which is fixedly connected to a linkage branch pipe and connected to the output end of the drive seat through the linkage branch pipe; a square groove, which is disposed through the grinding wheel; square support plate three and square support plate two, which are fixedly connected to the inner wall of the square groove from top to bottom, and there is a certain distance between them; a spring, which is fixedly connected to the outer wall of the bottom end of the square support plate three, and a support ring one is fixedly connected to its bottom end; an inner tube body, which is movably inserted into the square support plate three and square support plate two, and the support ring one is fixedly sleeved on the outer circumference of the inner tube body, and multiple oblique air outlets two are spirally distributed through the inner circumference of the inner tube body; a brush holder, which is fixedly connected to the outer circumference of the inner tube body, and multiple brush bristles are fixedly connected to the bottom end of the brush holder; a ventilation pipe one, which is fixedly connected to one end of an external air supply pipe, and the bottom end of the ventilation pipe one extends into the inner tube body; and a hemispherical base, which is fixedly connected to the inner wall of the bottom end of the inner tube body, and multiple oblique air outlets one are disposed through its inner circumference.

[0015] The grinding mechanism further includes: a square support plate 1, which is fixedly connected to the outer circumference of the inner tube and located at the top of the square support plate 3; a sealing ring, which is fixedly attached to the inner top wall of the square support plate 1 and movably attached to the outer circumference of the vent pipe 1; a snap-fit ​​bracket, which is fixedly connected to the outer circumference of the linkage branch pipe; and a soft plug, which is fixedly snap-fitted to the inner bottom wall of the hemispherical base.

[0016] The polishing mechanism further includes: a thin air duct, fixedly connected to the inner wall of the bottom end of the air duct one; a second support ring, fixedly connected to the inner circumferential wall of the inner tube body and located below the multiple oblique air outlets two; and multiple elastic sealing sheets, fixedly connected to the inner circumferential wall of the second support ring.

[0017] With a grinding mechanism, the spring force causes multiple bristles to extend from the bottom of the grinding wheel. Under centrifugal force, the bristles unfold and contact the inner wall of the inner hole. At the same time, the external air supply pipe generates airflow that acts on the inner wall of the inner hole. The two work together to completely remove stubborn debris from the inner wall of the inner hole. This cleaning structure can pre-clean the area to be ground by the grinding wheel to prevent debris from adhering to the inner wall of the inner hole and causing scratches during the grinding process, thus ensuring the final finishing effect. As the hemispherical base contacts the bottom of the inner hole, the spring can be compressed, so that the inner tube and bristles are completely submerged in the square groove of the grinding wheel, ensuring that the grinding wheel completely covers the inner circumference of the inner hole.

[0018] In a preferred embodiment, the hanging net includes: a hanging net body, which is attached to multiple hooks; multiple elastic crossbars, which are fixedly connected at equal intervals to the inner and outer walls of the hanging net body; a cover bag, which is fixedly connected to both sides of the multiple elastic crossbars; and a weighted ball, which is movably placed inside the cover bag.

[0019] In a preferred embodiment, the support mechanism includes: an L-shaped sleeve that is movably fitted onto the outer circumferential wall of the linkage branch pipe, and the bottom end of the snap-fit ​​bracket is movably attached to one side of the outer wall of the L-shaped sleeve; a support plate that is fixedly connected to the output end of the gas rod and movably fitted onto the L-shaped sleeve; and a slot that is provided through one side of the support plate.

[0020] The support mechanism further includes: a second support plate, which is movably fitted to the top outer wall of the first support plate; multiple screw holes, which are provided through the first support plate and the second support plate; and multiple bolts, which are engaged in the multiple screw holes.

[0021] The support mechanism further includes: a sleeve, fixedly connected to the bottom outer wall of the second support plate; two hinge seats, symmetrically fixedly connected to the opposite outer walls of the sleeve; and two V-shaped hinges, respectively hinged to the two hinge seats.

[0022] The support mechanism further includes: a mounting plate, fixedly connected to the inner walls of the opposite sides of the V-shaped hinge, and a magnet fixedly connected to the mounting plate; a support rod, movably inserted into the sleeve; and an irregularly shaped hinge frame, fixedly connected to the outer wall of the bottom end of the support rod, with the bottom ends of the two V-shaped hinges respectively hinged to the two ends of the irregularly shaped hinge frame.

[0023] The support mechanism further includes: a C-shaped side frame, which is fixedly connected to one side of the outer wall of the L-shaped frame, and the bottom ends of the two V-shaped hinges are movably abutted against the corner of the C-shaped side frame; and multiple hooks, which are respectively fixedly connected to the outer wall of the hinge seat and the irregular hinge frame on the same side, and the hanging net is hung on the multiple hooks.

[0024] The system incorporates a support mechanism that holds the magnet and the mesh. The magnet is positioned in the direction of debris discharge during cleaning, attracting iron filings. The mesh on one side allows most non-iron filings to adhere, preventing excessive debris buildup inside parts. High buildup depth can hinder the finishing and polishing of inner holes, and large buildups can prevent the airflow from completely cleaning the bottom of soft plugs. Furthermore, by separating iron filings from other debris and attracting some iron filings first, the mesh can intercept more non-iron filings. The collected iron filings can be reused. The support mechanism allows the V-shaped hinge to bend or unfold based on the extension and retraction of the pneumatic rod. After finishing and polishing, the pneumatic rod lifts the support plate, making the magnet vertical and the mesh raised. This facilitates scraping off iron filings attracted by the magnet, cleaning debris from the mesh, and replacing the mesh without disassembling the overall support structure, thus reducing operational difficulty.

[0025] A grinding method for an internal hole finishing and grinding mechanism for precision parts includes the following specific steps:

[0026] S1: Fix the parts to the rotating base and set them vertically with the inner hole facing upward;

[0027] S2: The outer wall of the grinding wheel is movably fitted to one side of the inner wall of the inner hole, and under the action of the spring, the bristles extend out of the bottom of the grinding wheel;

[0028] S3: The drive seat and rotating base drive the grinding wheel and parts to rotate respectively, and drive them to move downward through the longitudinal guide rail to finish and polish the inner wall of the inner hole.

[0029] S4: The bristles spread out and clean the inner wall of the inner hole at the bottom of the grinding wheel. At the same time, the external air supply pipe supplies air and discharges the airflow from multiple oblique air outlets to assist in cleaning the inner wall of the inner hole.

[0030] S5: The generated debris is guided to one side by rotating sweeper and airflow, and is then attracted by magnets and intercepted by wire mesh.

[0031] S6: As it continues to descend, the soft plug presses against the bottom of the inner hole, compressing the spring and achieving full coverage of the inner circumference of the grinding wheel.

[0032] As described above, a precision component internal hole dressing and grinding mechanism includes a rotating base, a longitudinal guide rail fixed to one side of the outer wall of the rotating base, a drive seat movably connected to the longitudinal guide rail, a pneumatic rod fixedly connected to the bottom outer wall of the drive seat, and an external air supply pipe fixedly connected inside the drive seat. It also includes: a grinding mechanism connected to the output end of the drive seat; a support mechanism connected to one side of the grinding mechanism and fixedly connected to the output end of the pneumatic rod; a hanging mesh and a magnet mounted on the support mechanism. The grinding mechanism includes: a grinding wheel with a linkage branch pipe fixedly connected to its top inner wall and connected to the output end of the drive seat via the linkage branch pipe; a square groove penetrating inside the grinding wheel; two square support plates, three and two, fixedly connected from top to bottom to the inner wall of the square groove, with a certain distance between them; and a spring fixedly connected to... The inner tube body is movably inserted into the square support plate three and the square support plate two, and the support ring one is fixedly sleeved on the outer circumference of the inner tube body. The inner circumference of the inner tube body has multiple oblique air outlets two spirally distributed throughout. The brush holder is fixedly connected to the outer circumference of the inner tube body, and multiple brush bristles are fixedly connected to the bottom end of the brush holder. The ventilation pipe one is fixedly connected to one end of the external air supply pipe, and the bottom end of the ventilation pipe one extends into the inner tube body. The hemispherical base is fixedly connected to the inner wall of the bottom end of the inner tube body, and multiple oblique air outlets one are provided through its inner circumference. The precision parts inner hole dressing and grinding mechanism and grinding method provided by the present invention have the technical effect of cleaning the inner wall of the inner hole of the position to be ground in advance to avoid scratches caused by adhering debris. Attached Figure Description

[0033] Figure 1This is a schematic diagram of the overall structure of a precision component inner hole trimming and grinding mechanism proposed in this invention.

[0034] Figure 2 This is a schematic diagram of the external structure of the grinding mechanism of the precision parts inner hole grinding mechanism proposed in this invention.

[0035] Figure 3 This is a schematic diagram of the internal structure of the grinding mechanism of a precision component inner hole trimming and grinding mechanism proposed in this invention.

[0036] Figure 4 This is a schematic diagram showing the disassembled grinding mechanism of the inner hole trimming and grinding mechanism for precision parts proposed in this invention.

[0037] Figure 5 This is a schematic diagram of the internal structure of the inner tube of a precision component inner hole trimming and grinding mechanism proposed in this invention.

[0038] Figure 6 This is a schematic diagram showing the disassembled support mechanism of the inner hole trimming and grinding mechanism for precision parts proposed in this invention.

[0039] Figure 7 This is a schematic diagram of the mesh hanging structure of an internal hole trimming and grinding mechanism for precision parts proposed in this invention.

[0040] In the diagram: 1. Air spring; 2. Drive base; 3. Longitudinal guide rail; 4. External air supply pipe; 5. Rotating base; 6. Grinding mechanism; 7. Support mechanism; 8. Hanging mesh; 9. Magnet; 601. Vent pipe one; 602. Linkage branch pipe; 603. Grinding wheel; 604. Thin vent pipe; 605. Square support plate one; 606. Brush bristles; 607. Spring; 608. Sealing ring; 609. Square slide groove; 610. Clip-on bracket; 611. Inner tube body; 612. Support ring one; 613. Brush holder; 614. Soft plug; 615. Angled air outlet one; 616. Elastic seal 617. Slanted air outlet II; 618. Square support plate II; 619. Square support plate III; 620. Hemispherical base; 621. Support ring II; 701. L-shaped sleeve; 702. Bolt; 703. Support plate I; 704. Groove; 705. Screw hole; 706. Support plate II; 707. C-shaped side frame; 708. Sleeve; 709. Hook; 710. Hinge seat; 711. Support rod; 712. Irregular hinge frame; 713. V-shaped hinge; 714. Mounting plate; 801. Netting body; 802. Elastic crossbar; 803. Bag; 804. Weighted ball. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] The present invention discloses a precision component inner hole trimming and grinding mechanism and grinding method, which is mainly applied to the scenario of grinding the inner hole of components.

[0043] Reference Figures 1-5 A precision component internal hole finishing and grinding mechanism includes a rotating base 5, a longitudinal guide rail 3 fixed to one outer wall of the rotating base 5, a drive seat 2 movably connected to the longitudinal guide rail 3, a pneumatic rod 1 fixedly connected to the bottom outer wall of the drive seat 2, and an external air supply pipe 4 fixedly connected inside the drive seat 2. It also includes:

[0044] The grinding mechanism 6 is connected to the output end of the drive base 2;

[0045] The support mechanism 7 is connected to one side of the grinding mechanism 6 and is fixedly connected to the output end of the air rod 1;

[0046] The hanging net 8 and the magnet 9 are installed on the support mechanism 7;

[0047] The polishing mechanism 6 includes:

[0048] The grinding wheel 603 has a linkage branch pipe 602 fixedly connected to its inner wall at the top, and is connected to the output end of the drive seat 2 through the linkage branch pipe 602. In the grinding mechanism 6, the drive seat 2 drives the grinding wheel 603 to rotate through the linkage of the linkage branch pipe 602, which acts on the inner wall of the inner hole.

[0049] A square groove 609 is provided through the grinding wheel 603;

[0050] Square support plate 3 619 and square support plate 2 618 are fixedly connected to the inner wall of square slide groove 609 from top to bottom, and there is a certain distance between them;

[0051] Spring 607 is fixedly connected to the bottom outer wall of square support plate 619, and a support ring 612 is fixedly connected to its bottom end;

[0052] The inner tube 611 is movably inserted into the square support plate 3 619 and the square support plate 2 618, and the support ring 1 612 is fixedly sleeved on the outer circumference of the inner tube 611. The inner circumference of the inner tube 611 has multiple oblique air outlets 2 617 spirally distributed throughout.

[0053] The brush holder 613 is fixedly connected to the outer circumference of the inner tube 611, and multiple brush bristles 606 are fixedly connected to the bottom end of the brush holder 613. During operation, the inner tube 611 is squeezed out by the elastic force of the spring 607, so that multiple brush bristles 606 extend out of the bottom of the grinding wheel 603. As the grinding wheel 603 rotates, the inner tube 611 rotates synchronously by the limiting of the square groove 609. Under the action of centrifugal force, multiple brush bristles 606 unfold and contact the inner wall of the inner hole.

[0054] Ventilation pipe 601 is fixedly connected to one end of external air supply pipe 4, and the bottom end of ventilation pipe 601 extends into inner pipe body 611. Ventilation pipe 601 is also rotatably connected to linkage branch pipe 602, and linkage branch pipe 602 is driven to rotate by drive seat 2. Since the driving method of drive seat 2 is existing technology and not an improvement of the present invention, it will not be described in detail.

[0055] The hemispherical base 620 is fixedly connected to the inner wall of the bottom end of the inner tube 611, and its circumferential inner wall is provided with multiple oblique air outlets 615. The external air supply pipe 4 supplies air into the inner tube 611 through the ventilation pipe 601, and the air is discharged through the multiple spirally arranged oblique air outlets 617. The airflow acts on the inner wall of the inner hole, assisting the bristles 606 in cleaning the debris adhering to the inner wall of the inner hole. With the assistance of both, the stubborn debris on the inner wall of the inner hole can be completely removed. The grinding wheel 603 grinds from top to bottom. The cleaning structure can clean the area to be ground by the grinding wheel 603 in advance to avoid debris adhering to the inner wall of the inner hole and causing scratches during the grinding process, thus ensuring the final finishing effect. As the hemispherical base 620 contacts the bottom of the inner hole, the compressible spring 607 can completely submerge the inner tube 611 and the bristles 606 in the square groove 609 of the grinding wheel 603, so as to ensure that the grinding wheel 603 completely covers the inner circumference of the inner hole.

[0056] Reference Figure 4 In a preferred embodiment, the polishing mechanism 6 further includes:

[0057] Square support plate 605 is fixedly connected to the outer circumference of the inner tube 611 and is located at the top of square support plate 619. It is used to limit the minimum descent distance of the inner tube 611 and is limited by the square slide groove 609 to make the inner tube 611 rotate synchronously.

[0058] The sealing ring 608 is fixedly attached to the inner wall of the top of the square support plate 605 and movably attached to the outer wall of the circumference of the vent pipe 601, so as to ensure that the gas will not leak from the inner wall of the top of the square support plate 605 during the gas transmission process.

[0059] The snap-fit ​​bracket 610 is fixedly connected to the outer circumferential wall of the linkage branch pipe 602 and is used to limit the position of the L-shaped sleeve 701.

[0060] The soft plug 614 is fixedly attached to the inner wall of the bottom end of the hemispherical base 620 to ensure that rapid rotation will not damage the inner wall of the part when it comes into contact with the inner wall of the part.

[0061] Reference Figure 4 and Figure 5 In a preferred embodiment, the polishing mechanism 6 further includes:

[0062] A thin air tube 604 is fixedly connected to the inner wall of the bottom end of the air tube 601. The thin air tube 604 can reduce the outer diameter of the air tube 601 so as to better insert it into the support ring 621.

[0063] Support ring 2 621 is fixedly connected to the inner circumferential inner wall of inner tube body 611 and is located below multiple oblique air outlets 2 617;

[0064] Multiple elastic sealing plates 616 are fixedly connected to the inner circumferential wall of the second support ring 621. When the bottom of the inner tube 611 touches the bottom, the inner tube 611 moves upward until the thin vent tube 604 is inserted into the second support ring 621, opening the multiple elastic sealing plates 616 and breaking the sealing structure of the elastic sealing plates 616. This allows gas to be discharged from multiple oblique air outlets 615, cleaning any debris that may exist on the inner wall of the bottom of the parts and preventing the soft plug 614 from pressing on the debris and causing damage to the inner wall of the parts.

[0065] Reference Figure 2 and Figure 6 In a preferred embodiment, the support mechanism 7 includes:

[0066] The L-shaped sleeve 701 is movably sleeved on the outer circumference of the linkage branch pipe 602, and the bottom end of the snap-fit ​​bracket 610 is movably attached to one side of the outer wall of the L-shaped sleeve 701.

[0067] Support plate 703 is fixedly connected to the output end of air rod 1 and movably sleeved on L-shaped sleeve 701. The sleeve structure of support plate 703 and L-shaped sleeve 701 ensures that the distance between support plate 703 and grinding wheel 603 remains unchanged when air rod 1 moves support plate 703 and when grinding and finishing.

[0068] The slot 704 is provided through one side of the support plate 703 to facilitate the installation of the sleeve 708, V-shaped hinge 713 and other structures, and to avoid obstructing them.

[0069] Reference Figure 6 In a preferred embodiment, the support mechanism 7 further includes:

[0070] Support plate 2 706 is movably fitted to the top outer wall of support plate 1 703;

[0071] Multiple screw holes 705 are provided through the support plate 703 and the support plate 706;

[0072] Multiple bolts 702 are engaged in multiple screw holes 705, and the second support plate 706 is fixed to the first support plate 703 by bolts 702.

[0073] Reference Figure 6 In a preferred embodiment, the support mechanism 7 further includes:

[0074] Sleeve 708 is fixedly connected to the bottom outer wall of support plate 706;

[0075] Two hinge seats 710 are symmetrically and fixedly connected to the outer walls of opposite sides of the sleeve 708;

[0076] Two V-shaped hinges 713 are respectively hinged to two hinge seats 710.

[0077] Reference Figure 6 In a preferred embodiment, the support mechanism 7 further includes:

[0078] Mounting plate 714 is fixedly connected to the inner walls of opposite sides of V-shaped hinge 713, and magnet 9 is fixedly connected to mounting plate 714;

[0079] Support rod 711 is movably inserted into sleeve 708;

[0080] The irregularly shaped hinge frame 712 is fixedly connected to the bottom outer wall of the support rod 711, and the bottom ends of the two V-shaped hinges 713 are respectively hinged to the two ends of the irregularly shaped hinge frame 712.

[0081] Reference Figure 6 In a preferred embodiment, the support mechanism 7 further includes:

[0082] The C-type side frame 707 is fixedly connected to one side outer wall of the L-type sleeve 701, and the bottom ends of the two V-type hinges 713 are movably abutted against the corner of the C-type side frame 707.

[0083] Multiple hooks 709 are fixedly connected to the outer wall of the hinge seat 710 and the irregular hinge frame 712 on the same side, and the hanging net 8 is hung on the multiple hooks 709. The support mechanism 7 is used to support the magnet 9 and the hanging net 8. The magnet 9 can be set at an angle, which is exactly in the direction of debris discharge during the cleaning process. It adsorbs iron filings in the debris. The setting of the hanging net 8 on one side can make most of the non-iron filings adhere. As the brush bristles 606 rotates and cleans and the airflow is guided, the debris will move towards the magnet 9 and the hanging net 8. The magnet 9 absorbs iron filings and reduces some of the debris accumulation. The folded hanging net 8 can make more than half of the non-iron metal adhere based on the material and the two-layer stacking setting, thus reducing the amount of debris accumulation. Since the position of the hanging net 8 does not move with the rotation of the grinding wheel and the parts, the possibility of the adhered debris falling off is reduced, thereby reducing the amount of debris accumulation at the bottom of the inner hole. The airflow discharged from the bottom can remove the debris at the bottom and prevent the soft plug 614 from being squeezed on the debris.

[0084] In addition, the support mechanism 7 is designed such that the support rod 711 slides within the sleeve 708, ensuring that the bottom center axis of the V-shaped hinge 713 is always perpendicular to the support rod 711. When the V-shaped hinge 713 abuts against the corner of the C-shaped side frame 707, the support plate 703 can be raised or lowered by the extension and retraction of the pneumatic rod 1, which simultaneously causes the V-shaped hinge 713 to bend or unfold. When the V-shaped hinge 713 bends, the magnet 9 fixed on the mounting plate 714 is positioned at an angle, and the mesh 8 is folded. The folded part is perpendicular to one side of the magnet 9, which can intercept non-ferrous debris. With this structure, after finishing and polishing, the support plate 703 can be raised by the pneumatic rod 1, making the magnet 9 vertical and the mesh 8 pulled up. Without disassembling the overall support structure, it is convenient to scrape off the iron filings adsorbed by the magnet 9 and replace the mesh 8, reducing the difficulty of operation.

[0085] Reference Figure 7 In a preferred embodiment, the hanging net 8 includes:

[0086] The main body of the netting, 801, is attached to multiple hooks, 709.

[0087] Multiple elastic crossbars 802 are fixedly connected at equal intervals to the inner outer wall of the hanging net body 801;

[0088] The bag 803 is fixedly connected to both sides of multiple elastic crossbars 802;

[0089] The weighted ball 804 is placed inside the bag 803 within the net 8. It mainly intercepts debris through the net body 801. Based on the setting of multiple elastic crossbars 802, the net 8 maintains a certain unfolded width even when affected by airflow during use, allowing debris to adhere better. The arrangement of the bag 803 and the weighted ball 804 allows the net body 801 to be suspended and in a drooping state. The weighted ball 804 follows the drooping state of the net body 801 and rolls inside the bag 803, always located at the lowest point of the net body 801. This stabilizes the position of the net body 801 and reduces the impact of airflow on the stability of the net 8, facilitating better debris adhesion.

[0090] Reference Figures 1-6 A grinding method for an internal hole finishing and grinding mechanism for precision parts includes the following specific steps:

[0091] S1: Fix the component to the rotating base 5 and set it vertically with the inner hole facing upward;

[0092] S2: The outer wall of the grinding wheel 603 is movably attached to one side of the inner wall of the inner hole, and under the action of the spring 607, the bristles 606 extend out of the bottom of the grinding wheel 603;

[0093] S3: The drive seat 2 and the rotating base 5 drive the grinding wheel 603 and the parts to rotate, and drive them to move downward through the longitudinal guide rail 3 to finish and grind the inner wall of the inner hole.

[0094] S4: The bristles 606 spread out and clean the inner wall of the inner hole at the bottom of the grinding wheel 603. At the same time, the external air supply pipe 4 supplies air and discharges the airflow through multiple oblique air outlets 617 to assist in cleaning the inner wall of the inner hole.

[0095] S5: The generated debris is guided to one side by rotating sweeping and airflow, and is then attracted by magnet 9 and intercepted by hanging net 8;

[0096] S6: As it continues to descend, the soft plug 614 presses against the bottom of the inner hole, compressing the spring 607, thus achieving full coverage of the inner circumference of the inner hole by the grinding wheel 603.

[0097] Working principle: In the grinding mechanism 6, the linkage of the linkage branch pipe 602 causes the drive seat 2 to drive the grinding wheel 603 to rotate, which acts on the inner wall of the inner hole. At this time, under the elastic force of the spring 607, the inner tube body 611 is squeezed out, causing multiple bristles 606 to extend out of the bottom of the grinding wheel 603. As the grinding wheel 603 rotates, the inner tube body 611 rotates synchronously through the limit of the square slide groove 609. Under the action of centrifugal force, multiple bristles 606 unfold and contact the inner wall of the inner hole. At the same time, the external air supply pipe 4 supplies air into the inner tube body 611 through the vent pipe 601, and the air is discharged through multiple spirally arranged oblique air outlets 617, generating airflow. For the inner wall of the inner hole, the auxiliary brush bristles 606 clean the debris adhering to the inner wall of the inner hole. The two work together to completely remove stubborn debris from the inner wall of the inner hole. Since the grinding wheel 603 grinds from top to bottom, this cleaning structure can clean the area to be ground by the grinding wheel 603 in advance to avoid debris adhering to the inner wall of the inner hole and causing scratches during the grinding process, thus ensuring the final finishing effect. As the hemispherical base 620 contacts the bottom of the inner hole, the compressible spring 607 makes the inner tube 611 and the brush bristles 606 completely submerged in the square groove 609 of the grinding wheel 603, so as to ensure that the grinding wheel 603 completely covers the inner circumference of the inner hole.

[0098] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A precision component internal hole dressing and grinding mechanism, comprising a rotating base (5), a longitudinal guide rail (3) fixed to one side outer wall of the rotating base (5), a drive seat (2) movably connected to the longitudinal guide rail (3), an air rod (1) fixedly connected to the bottom outer wall of the drive seat (2), and an external air supply pipe (4) fixedly connected inside the drive seat (2), characterized in that, Also includes: The grinding mechanism (6) is connected to the output end of the drive base (2); The support mechanism (7) is connected to one side of the grinding mechanism (6) and is fixedly connected to the output end of the air rod (1); The hanging net (8) and magnet (9) are installed on the support mechanism (7); The polishing mechanism (6) includes: The grinding wheel (603) has a linkage branch pipe (602) fixedly connected to its inner wall at the top, and is connected to the output end of the drive seat (2) through the linkage branch pipe (602); A square groove (609) is provided through the grinding wheel (603); Square support plate three (619) and square support plate two (618) are fixedly connected to the inner wall of square slide groove (609) from top to bottom, and there is a certain distance between them; Spring (607) is fixedly connected to the bottom outer wall of square support plate three (619), and a support ring one (612) is fixedly connected to its bottom end. The inner tube (611) is movably inserted into the square support plate three (619) and the square support plate two (618), and the support ring one (612) is fixedly sleeved on the outer circumference of the inner tube (611). The inner circumference of the inner tube (611) has multiple oblique air outlets two (617) spirally distributed. The brush holder (613) is fixedly connected to the outer circumference of the inner tube (611), and multiple brush bristles (606) are fixedly connected to the bottom end of the brush holder (613). Ventilation pipe 1 (601) is fixedly connected to one end of external air supply pipe (4), and the bottom end of ventilation pipe 1 (601) extends into inner pipe body (611); The hemispherical base (620) is fixedly connected to the inner wall of the bottom end of the inner tube (611), and multiple oblique air outlets (615) are provided through its circumferential inner wall. The polishing mechanism (6) also includes: Square support plate one (605) is fixedly connected to the outer circumferential wall of the inner tube body (611) and is located at the top of square support plate three (619); The sealing ring (608) is fixedly attached to the inner wall of the top of the square support plate (605) and movably attached to the outer wall of the circumference of the vent pipe (601). The clip bracket (610) is fixedly connected to the outer circumferential wall of the linkage branch pipe (602); A soft plug (614) is fixedly attached to the inner wall of the bottom end of the hemispherical base (620); The support mechanism (7) includes: The L-shaped sleeve (701) is movably sleeved on the outer circumference of the linkage branch pipe (602), and the bottom end of the snap-fit ​​bracket (610) is movably attached to one side of the outer wall of the L-shaped sleeve (701). Support plate 1 (703) is fixedly connected to the output end of the air rod (1) and movably sleeved on the L-shaped bracket (701); A slot (704) is provided through one side of the support plate (703); The support mechanism (7) also includes: Support plate two (706) is movably attached to the top outer wall of support plate one (703); Multiple screw holes (705) are provided through the support plate one (703) and support plate two (706); Multiple bolts (702) are engaged in multiple threaded holes (705); The support mechanism (7) also includes: Sleeve (708) is fixedly connected to the bottom outer wall of support plate two (706); Two hinge seats (710) are symmetrically fixed to the outer walls of the sleeve (708) on opposite sides; Two V-shaped hinges (713) are respectively hinged to two hinge seats (710); The support mechanism (7) also includes: Mounting plate (714) is fixedly connected to the inner walls of opposite sides of V-shaped hinge (713), and magnet (9) is fixedly connected to mounting plate (714); The support rod (711) is movably inserted into the sleeve (708); The irregular hinge frame (712) is fixedly connected to the bottom outer wall of the support rod (711), and the bottom ends of the two V-shaped hinges (713) are respectively hinged to the two ends of the irregular hinge frame (712). The support mechanism (7) also includes: The C-type side frame (707) is fixedly connected to one side outer wall of the L-type sleeve frame (701), and the bottom ends of the two V-type hinges (713) are movably abutted against the corner of the C-type side frame (707); Multiple hooks (709) are fixedly connected to the outer wall of the hinge seat (710) and the irregular hinge frame (712) on the same side, and the hanging net (8) is hung on the multiple hooks (709).

2. The precision component internal hole dressing and grinding mechanism according to claim 1, characterized in that, The polishing mechanism (6) also includes: A thin vent tube (604) is fixedly connected to the inner wall of the bottom end of vent tube one (601); Support ring 2 (621) is fixedly connected to the inner circumferential wall of the inner tube body (611) and is located below multiple oblique air outlets 2 (617); Multiple elastic sealing pieces (616) are fixedly connected to the inner circumferential wall of the second support ring (621).

3. The precision component internal hole dressing and grinding mechanism according to claim 1, characterized in that, The netting (8) includes: The main body of the net (801) is attached to multiple hooks (709); Multiple elastic crossbars (802) are fixedly connected at equal intervals to the inner outer wall of the hanging net body (801); A bag (803) is fixedly connected to both sides of multiple elastic crossbars (802); The weighted ball (804) is placed inside the bag (803).

4. A grinding method for an internal hole grinding mechanism of a precision component, applied to the internal hole grinding mechanism of a precision component as described in claim 3, characterized in that, The specific steps include the following: S1: Fix the parts to the rotating base (5) and set them vertically with the inner hole facing upward; S2: The outer wall of the grinding wheel (603) is movably attached to the inner wall of one side of the inner hole, and under the action of the spring (607), the bristles (606) extend out of the bottom of the grinding wheel (603); S3: The drive seat (2) and the rotating base (5) drive the grinding wheel (603) and the parts to rotate respectively, and drive them to move downward through the longitudinal guide rail (3) to finish and polish the inner wall of the inner hole; S4: The bristles (606) spread out and act on the inner wall of the inner hole at the bottom of the grinding wheel (603) to clean it. At the same time, the external air supply pipe (4) supplies air and discharges the airflow through multiple oblique air outlets (617) to assist in cleaning the inner wall of the inner hole. S5: The generated debris is guided to one side by rotating sweeping and airflow, and is respectively attracted by magnet (9) and intercepted by hanging net (8); S6: As it continues to descend, the soft plug (614) presses against the bottom of the inner hole, compressing the spring (607) to achieve full coverage of the inner circumference of the inner hole by the grinding wheel (603).

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