A device and method for processing a short hole of a thin wall in a ring

Abstract

This invention discloses a honing apparatus and method for annular thin-walled short holes, comprising a threaded cap, a threaded bushing, a first washer, a second washer, and a positioning block. The end of the threaded cap is inserted into the threaded bushing. The first washer is located inside the threaded bushing, the second washer is located inside the threaded cap, and the positioning block is located inside the threaded cap, with one end of the positioning block contacting the first washer and the other end contacting the second washer. A first part is sleeved on one end of the positioning block, and a second part is sleeved on the other end of the positioning block. The first part is located between the positioning block and the inner walls of the first washer and the threaded cap, and the second part is located between the positioning block and the inner walls of the second washer and the threaded cap. This apparatus and method can ensure the machining quality and efficiency of the inner hole of annular thin-walled parts.

Description

Technical Field

[0001] This invention belongs to the field of machining and relates to a honing apparatus and method for annular thin-walled short holes. Background Technology

[0002] When machining the inner hole of annular thin-walled parts, due to the very thin wall thickness and small dimensional tolerance requirements, the current honing process for such annular thin-walled short holes is carried out by hand. However, the force exerted by the hand during the machining process makes the part prone to deformation. Furthermore, because the inner hole of the part is short, it is difficult to clamp it manually, resulting in severe deformation, low part pass rate, difficulty in ensuring quality, and impact on production progress. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a honing apparatus and method for annular thin-walled short holes, which can ensure the machining quality and efficiency of the inner hole of annular thin-walled parts.

[0004] To achieve the above objectives, the present invention discloses an annular thin-walled short hole honing processing device, comprising a threaded cap, a threaded bushing, a first washer, a second washer, and a positioning block;

[0005] The end of the threaded cap is inserted into the threaded bushing. The first washer is located inside the threaded bushing, the second washer is located inside the threaded cap, and the positioning block is located inside the threaded cap. One end of the positioning block is in contact with the first washer, and the other end of the positioning block is in contact with the second washer.

[0006] The first part is fitted onto one end of the positioning block, and the second part is fitted onto the other end of the positioning block. The first part is located between the positioning block and the inner wall of the first gasket and the threaded cap, and the second part is located between the positioning block and the inner wall of the second gasket and the threaded cap.

[0007] The outer wall of the threaded cap is threaded to the inner wall of the threaded bushing.

[0008] The positioning block has a symmetrical stepped hole with a grid in the middle, which is used to limit the first part and the second part.

[0009] The end face of the positioning block is rounded.

[0010] The honing method for annular thin-walled short holes according to the present invention includes the following steps:

[0011] 1) The first and second parts are clamped by an annular thin-walled short-hole honing machine;

[0012] 2) The annular thin-walled short hole honing device is installed on the ring gripping fixture of the honing machine tool, and the honing machine tool is used to perform honing of the annular thin-walled short hole on the part.

[0013] 3) Disassemble and remove the processed parts.

[0014] The operation process of step 1) is as follows:

[0015] 11) Clamp the two parts to be honed at both ends of the positioning block respectively;

[0016] 12) Install the first washer onto the inner end face of the threaded bushing;

[0017] 13) Press the positioning block containing the part against the first shim;

[0018] 14) Press the second washer firmly against the end face of the second part;

[0019] 15) Screw the threaded cap and threaded bushing together and tighten them.

[0020] The inner diameter of the positioning stop is D. CN The minor diameter of the inner annular groove on the part is D. HX Then D CN >D HX .

[0021] The depth of the positioning block is L. CS If the depth of the annular groove in the part is L, then L > L CS .

[0022] The outer diameter of the first gasket is D1, the inner diameter of the first gasket is d1, and the inner diameter of the part is D. Then (D-d1)>0.1mm.

[0023] The outer diameter of the second shim is D2, the inner diameter of the second shim is d2, and the inner diameter of the part is D. Then (D-d2)>0.1mm.

[0024] The present invention has the following beneficial effects:

[0025] In the specific operation of the honing device and method for annular thin-walled short holes described in this invention, the first part is located between the positioning block and the inner wall of the first washer and the threaded cap, and the second part is located between the positioning block and the inner wall of the second washer and the threaded cap, thereby achieving the limiting clamping of the parts. Then, the annular thin-walled short hole is processed using a honing machine. The processed part meets the technical requirements of the drawing, the inner hole dimension accuracy is stable, the processing efficiency is high, and the processing difficulty and labor intensity of the operator are greatly reduced. The processing cost is low, the process is simple, it is easy to promote and apply, and it has great practical value. Attached Figure Description

[0026] Figure 1 This is an exploded view of the present invention;

[0027] Figure 2 This is an assembly drawing of the present invention;

[0028] Figure 3 This is a structural diagram of a ring-shaped thin-walled part.

[0029] Among them, 1 is a threaded bushing, 2 is a first washer, 3 is a positioning block, 4 is a second washer, and 5 is a threaded cap. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, not all embodiments, and are not intended to limit the scope of the present invention. Furthermore, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion regarding the concepts disclosed in the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0031] The accompanying drawings show structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not drawn to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0032] refer to Figure 1 and Figure 2 The honing device for annular thin-walled short holes described in this invention includes a threaded bushing 1, a first washer 2, a positioning block 3, a second washer 4, and a threaded cap 5.

[0033] The end of the threaded cap 5 is inserted into the threaded bushing 1, and the outer wall of the threaded cap 5 is threadedly connected to the inner wall of the threaded bushing 1. The first washer 2 is located inside the threaded bushing 1, the second washer 4 is located inside the threaded cap 5, and the positioning block 3 is located inside the threaded cap 5. One end of the positioning block 3 is in contact with the first washer 2, and the other end of the positioning block 3 is in contact with the second washer 4.

[0034] The first part is fitted onto one end of the positioning block 3, and the second part is fitted onto the other end of the positioning block 3. The first part is located between the positioning block 3 and the inner wall of the first gasket 2 and the threaded cap 5, and the second part is located between the positioning block 3 and the inner wall of the second gasket 4 and the threaded cap 5.

[0035] In this embodiment, the positioning block 3 has a symmetrical stepped hole inside, which is used to limit the first part and the second part.

[0036] Accordingly, refer to Figure 1 and Figure 2 This invention discloses a honing method for annular thin-walled short holes, comprising the following steps:

[0037] 1) Clamp the first and second parts;

[0038] The operation process of step 1) is as follows:

[0039] 11) Clamp the two parts to be honed at both ends of the positioning block 3 respectively;

[0040] 12) Install the first washer 2 onto the inner end face of the threaded bushing 1;

[0041] 13) Press the positioning block 3 containing the parts against the first gasket 2;

[0042] 14) Press the second shim 4 firmly against the end face of the second part;

[0043] 15) Screw the threaded cap 5 and threaded bushing 1 together and tighten them;

[0044] 2) The annular thin-walled short hole honing device is installed on the ring gripping fixture of the honing machine tool to perform honing of the annular thin-walled short hole;

[0045] 3) Disassemble the parts.

[0046] The specific process of step 3) is as follows:

[0047] 31) Remove the annular thin-walled short-hole honing device from the honing machine and remove the ring gripping fixture;

[0048] 32) Remove the threaded cap 5, and remove the first washer 2 and the second washer 4;

[0049] 33) Remove the positioning block 3 containing the parts;

[0050] 34) Remove the part from the positioning block 3.

[0051] In this embodiment, the positioning block 3 has the same structure and dimensions as the mounting parts, and the inner diameter of the positioning block 3 is D. CNThe minor diameter of the inner annular groove on the part is D. HX D CN >D HX The end face of the positioning block 3 is rounded, and the depth of the positioning block 3 is L. CS The depth of the annular groove in the part is L, where L > L CS The width of the middle partition of the positioning block 3 is 3-5mm.

[0052] In this embodiment, the outer diameter of the first gasket 2 is D1, which matches the inner hole size of the threaded bushing 1 with a gap of 0.1mm. The inner hole of the first gasket 2 is d1, and the inner hole of the part is D, (D-d1)>0.1mm.

[0053] The outer diameter of the second gasket 4 is D2, which matches the inner diameter of the threaded cap 5 with a gap of 0.1mm. The inner diameter of the second gasket 4 is d2, and the inner diameter of the part is D, where (D-d2)>0.1mm.

[0054] When clamping multiple parts, the relationship between the stacked hole length and the machining whetstone length needs to be considered. The stacked hole length Lk should be equal to or slightly less than the machining whetstone length Ly, i.e., Lk≤Ly. This not only effectively ensures the form and position tolerance of the inner hole of the part, but also makes the dimensional accuracy of the inner hole of the part more stable. If the stacked length is too short, the inner hole size of the parts at both ends of the fixture is easily larger than that of the parts clamped in the middle. If the stacked length is too long, the inner hole size of the parts at both ends of the fixture is easily smaller than that of the parts clamped in the middle.

[0055] It should be noted that the present invention has the following characteristics:

[0056] 1) This invention changes hand-held part processing to device processing, which can clamp two or more parts at a time, improving efficiency, freeing up hands, and making it safe and convenient.

[0057] 2) This invention makes full use of the parts with better strength and avoids the parts with weaker strength, so as to minimize the clamping deformation of the parts and ensure the processing quality of the parts.

[0058] 3) Two parts can be added at the same time to turn a short hole part into a long hole part, thereby reducing the tendency of the part to tilt during honing of the short hole, which can lead to changes in the form and position tolerances of the hole and other end faces.

[0059] Example 1

[0060] In this embodiment, the material being machined is a thin-walled part made of 1Cr18Ni9, and the design requires an inner hole of φ23. + 0 0.01The wall thickness is 1mm, the roughness is Ra0.2, the inner hole length is 8±0.1, the perpendicularity between the inner hole and the end face is 0.05, and the equipment selected is a high-precision honing machine ML-5000.

[0061] After processing with this invention, all inner hole dimensions, roughness, and perpendicularity of the inner hole to the end face are qualified. At the same time, the operator's hands are freed, the processing efficiency is significantly improved, and the quality is stable.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A honing apparatus for annular thin-walled short holes, characterized in that, The device comprises a threaded cap (5), a threaded bushing (1), a first gasket (2), a second gasket (4) and a positioning stopper (3). The end of the threaded cap (5) is inserted into the threaded bushing (1), the first gasket (2) is located in the threaded bushing (1), the second gasket (4) is located in the threaded cap (5), the positioning stopper (3) is located in the threaded cap (5), one end of the positioning stopper (3) is in contact with the first gasket (2), and the other end of the positioning stopper (3) is in contact with the second gasket (4). A first part is sleeved on one end of the positioning stopper (3), and a second part is sleeved on the other end of the positioning stopper (3), wherein the first part is located between the positioning stopper (3), the first gasket (2) and the inner wall of the threaded cap (5), and the second part is located between the positioning stopper (3), the second gasket (4) and the inner wall of the threaded cap (5). The positioning stopper (3) is a symmetrical stepped hole with a partition in the middle, and the partition is used to limit the first part and the second part. The inner diameter of the positioning block (3) is D CN , the small diameter of the inner annular groove on the part is D HX , then D CN > D HX ; The depth of the positioning stopper (3) is L CS , the annular groove depth of the part is L, then L>L CS ; The outer diameter of the first gasket (2) is D1, the inner hole diameter of the first gasket (2) is d1, and the inner hole diameter of the part is D, so (D-d1) > 0.1 mm. The outer diameter of the second gasket (4) is D2, the inner hole diameter of the second gasket (4) is d2, and the inner hole diameter of the part is D, so (D-d2) > 0.1 mm.

2. The ring-shaped thin-walled short-hole honing device according to claim 1, characterized by The outer wall of the threaded cap (5) is threadedly connected with the inner wall of the threaded bushing (1).

3. The ring-shaped thin-walled short-hole honing device according to claim 1, characterized by The end face of the positioning stopper (3) is a rounded structure.

4. A method of ring thin-wall short-hole honing processing, characterized in that, The annular thin-walled short-hole honing processing device according to claim 1 comprises the following steps: 1) Clamping the first part and the second part by the annular thin-walled short-hole honing processing device; 2) Installing the annular thin-walled short-hole honing processing device on the ring clamp of the honing machine tool, and using the honing machine tool to perform honing processing on the annular thin-walled short-hole of the part; 3) Removing the processed part.

5. The ring-shaped thin-walled short-hole honing process according to claim 4, characterized in that, The operation process of step 1) is as follows: 11) Clamping the two parts to be honed on the two ends of the positioning stopper (3); 12) Installing the first gasket (2) on the inner end face of the threaded bushing (1); 13) Pressing the positioning stopper (3) with the part against the first gasket (2); 14) Pressing the second gasket (4) against the end face of the second part; 15) Rotating and tightening the threaded cap (5) and the threaded bushing (1).

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