CN113021171B - Compound honing head for small hole - Google Patents
Compound honing head for small hole Download PDFInfo
- Publication number
- CN113021171B CN113021171B CN202110325877.8A CN202110325877A CN113021171B CN 113021171 B CN113021171 B CN 113021171B CN 202110325877 A CN202110325877 A CN 202110325877A CN 113021171 B CN113021171 B CN 113021171B
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- working section
- honing head
- grooves
- section
- hole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/08—Honing tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/007—Weight compensation; Temperature compensation; Vibration damping
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention discloses a composite honing head for small holes. The honing head comprises a base body, a plurality of rubber strips and abrasive paper; the substrate is axially and sequentially provided with a clamping section, a second working section and a first working section, the side wall of the first working section is provided with a plurality of grooves which are formed along the axial direction, and the plurality of grooves are distributed along the circumferential direction of the first working section; each rubber strip is arranged in each groove and protrudes out of the surface of the side wall of the first working section; the sand paper is coated on the first working section and wraps the rubber strips; the shape of the first working section wrapped with the abrasive paper is matched with the hole to be honed; the shape of the second working section is matched with the hole to be processed or the outer diameter of the second working section is smaller than the aperture of the hole to be processed; the inner diameter of the hole to be honed is less than
The honing head can be used for finishing small holes with 5-level precision below phi 12 and even higher precision, and has a wider application range.
Description
Technical Field
The invention relates to a honing head for machining, in particular to a composite honing head for small holes, which is particularly suitable for honing holes with the diameter smaller than that of the holes
Honing the small holes.
Background
The honing is a honing head with adjustable diameter, which is driven by a mechanical power head to do composite motion of opposite rotation and axial motion with the workpiece, and the abrasive grains on the honing strip are like numerous sharp knives to remove tiny allowance of the hole wall and improve the surface roughness to form a micro reticulate pattern. With the gradual expansion of the bore diameter to be processed, the diameter size of the honing head needs to be adjusted according to the measurement result, and the radial pressure and abrasion compensation required by honing are ensured. The honing head generally comprises a honing stick (made of oilstone or a honing brick), a honing stick telescopic mechanism, a honing rod and the like, wherein the diameter is adjusted by utilizing mechanical forces such as spring force, pneumatic force, hydraulic force or thread screwing force and the like through an automatic control or manual adjustment mode.
The honing strips on the honing head are mostly made of oilstones, the number of the honing strips is three, the number of the honing strips is four, six or even more, the manufacturing difficulty is high, the manufacturing cost is high, the replaceability is not strong after the honing strips are worn or damaged, the number of parts of the whole mechanism is large, the structure is complex, and the operation difficulty is high. Even if the spring pre-tightening force honing head with a relatively simple structure is adopted, the spring force is not well grasped, and the work load is multiplied because the spring needs to be measured and adjusted finely continuously. Particularly, for honing a small-diameter hole, a honing head with a smaller size and more precise linkage needs to be manufactured, so that the honing head is more difficult to realize and is very expensive.
Disclosure of Invention
Aiming at the defects or shortcomings of the prior art, the invention provides a composite honing head for small holes.
Therefore, the invention provides a compound honing head for small holes, which comprises:
the clamping device comprises a base body, wherein the base body is axially and sequentially provided with a clamping section, a second working section and a first working section, the side wall of the first working section is provided with a plurality of grooves which are formed along the axial direction, and the plurality of grooves are distributed along the circumferential direction of the first working section;
the rubber strips are arranged in the grooves, and each rubber strip or part of the rubber strips protrude out of the surface of the side wall of the first working section;
the sand paper is coated on the first working section and wraps the rubber strips;
the shape of the first working section wrapped with the abrasive paper is matched with the hole to be honed; the shape of the second working section is matched with the hole to be processed or the outer diameter of the second working section is smaller than the aperture of the hole to be processed; the inner diameter of the hole to be honed is less than
Further, the first working section is cylindrical.
Further, the second working section is cylindrical.
Further, the outer diameter of the second working section is smaller than the outer diameter of the first working section.
Further, the outer diameter of the clamping section is larger than the outer diameter of the first working section or the outer diameter of the second working section.
Further, the cross section of the groove is circular.
Further, the rubber strip is arranged in the groove, and a gap is reserved between the rubber strip and the inner wall of the groove.
Optionally, the rubber strip protrudes 0.4-0.6mm from the surface of the side wall of the first working section.
Furthermore, the base body is provided with a containing and cutting groove which is positioned at one end or two ends of the plurality of grooves in the axial direction and is communicated with each groove.
Furthermore, a guide head is arranged at the end part of the first working section, and the outer surface of the head to be guided is a conical cylindrical surface.
The invention adopts rubber with excellent elasticity, thermal stability and wear resistance, such as aviation rubber, as a honing support material, sand paper with different particle sizes is wrapped outside, and when honing or grinding, the rubber strips uniformly distributed on the circumference of a honing head substrate provide continuous radial pressure and grinding compensation for the sand paper, so that the purpose of finishing within the range of 0.02 lower amount can be achieved by only intermittently measuring the size and adding grinding paste without adjusting the honing head.
The honing head of the invention can be used for mechanical honing and is also suitable for manual grinding; and when the honing tool is used, one honing head replaces 3-4 conventional cast iron grinding rods, so that the honing tool is more efficient and lower in cost.
The honing head can be used for finishing small holes with 5-level precision below phi 12 and even higher precision, and has a wider application range.
Drawings
Fig. 1 is a schematic structural view of a honing head according to the present invention;
fig. 2 is a schematic view of an end structure of the honing head according to the present invention;
fig. 3 is an example of a honing head according to the invention;
fig. 4 is an example of a process of using the honing head of the present invention;
figure 5 is an example of a part to be honed of an embodiment.
Detailed Description
Unless otherwise indicated, the terms or methods herein are understood or implemented using methods well known to those of ordinary skill in the relevant art.
The axial, radial, circumferential, end, etc. directional or orientational terms described herein correspond to the corresponding directions or orientations in the drawings; wherein axial direction is also understood to be the axial direction of the hole to be treated or honed. It should be noted that the directions shown in the drawings are only for illustrating the present invention and are not meant to limit the present invention, and the rotation, adjustment, and change made by those skilled in the art based on the concept of the present invention are all within the protection scope of the present invention.
Example (b):
as shown in fig. 1 and 2, the honing head of the invention comprises a base body, a plurality of rubber strips and abrasive paper, wherein the base body is provided with a holding section 1, a second working section 2 and a first working section 3 in sequence along the axial direction, the side wall of the first working section 3 is provided with a plurality of grooves 6 which are arranged along the axial direction, the plurality of grooves are distributed along the circumferential direction of the first working section, a plurality of rubber strips 7 are respectively arranged in each groove 6 along the axial direction, each rubber strip or each individual rubber strip, namely a part of the rubber strip, protrudes out of the side wall surface of the first working section, the protruding amount (namely the radial protruding size) can be selected from 0.4 mm to 0.6mm, and the protruding amount in the example of fig. 2 is 0.4 mm to 0.5mm, so as to ensure enough rubber pressure; the abrasive paper parcel is outside first working segment, wraps up a plurality of rubber strips simultaneously, and the appearance of the first working segment of parcel abrasive paper and second working segment 2 matches with the pass and the size of treating the honing hole like this, and these two part structures can go deep into to treat the honing hole promptly to rotatable and along the axial activity of making a round trip, the shape and the size of centre gripping section do not do the restriction, the operation of facilitating the use can.
In some embodiments, the first working section or/and the second working section is cylindrical in shape.
When the honing head is used, the honing head is held by hand or clamped on a main shaft of a machine tool (horizontal or vertical), the honing head is screwed into a hole to be processed after centering, as shown in figure 4, the honing head performs cross composite finishing processing on the hole wall while performing axial rotation and axial pulling motion, so that the aims of removing microscopic high points, correcting cylindricity, improving surface smoothness, forming a tiny oil storage mesh surface and improving the lubricating performance of parts during working are fulfilled.
In other embodiments, the base body is further provided with two shaving-receiving grooves 4, as shown in fig. 1 and 2, and the two shaving-receiving grooves 4 are respectively located at two ends of the first working section and are communicated with the grooves.
In the scheme, a guide head 5 is arranged at the end part of the first working section on the base body, so that the honing operation is convenient, and the guide head is conical in shape.
In a preferred embodiment, the cross-sectional shape of the groove is circular in view of machining and assembly. Furthermore, after each rubber strip is arranged in the corresponding groove, a gap is reserved in the groove so as to meet the expansion requirement of the rubber strips in the working process.
In consideration of the firmness of the sandpaper, in a specific scheme, the sandpaper can be fixed by using quick-adhesion glue, and the object is shown in fig. 3.
In a preferred scheme, the base material of the invention can be selected from materials with proper texture, such as high-phosphorus cast iron or high-quality carbon steel rods; and when the matrix is processed, the coaxiality of the excircles needs to be ensured within a required range, and 4-6 uniformly distributed adhesive tape mounting holes are axially processed as shown in figures 1 and 2; and when the uniformly distributed axial holes are processed, the diameter of the reference circle needs to be ensured within the tolerance requirement range.
Finishing the 5-level precision hole of the high-precision gear pump shown in the figure 5 by using the honing head of the invention, wherein the hole diameter of each hole to be honed and the honing result are shown in table 1 (the measurement data shown in the table are detected by related standard methods in the field); the use of the honing head saves the workload of adjusting, measuring, replacing and the like of the conventional honing head, the efficiency is improved by at least 2 times, the dimensional precision, the cylindricity and the surface roughness all meet the requirements, and the qualification rate reaches 100 percent; the "actual time" in the table means the time required for every removal of Φ 0.002 of the inner diameter using the tool.
TABLE 1 actual measurement data Table
Claims (6)
1. The utility model provides a compound honing head is used to aperture which characterized in that includes:
the clamping device comprises a base body, wherein a clamping section, a second working section and a first working section are sequentially arranged in the axial direction of the base body, the first working section is cylindrical, a plurality of grooves formed in the axial direction are formed in the side wall of the first working section, and the plurality of grooves are distributed along the circumferential direction of the first working section;
the rubber strips are arranged in the grooves, and each rubber strip or part of the rubber strips protrude out of the surface of the side wall of the first working section; the cross section of the groove is circular; the rubber strip is arranged in the groove, and a gap is reserved between the rubber strip and the inner wall of the groove; the rubber strip protrudes from the surface of the side wall of the first working section by 0.4-0.6 mm;
the sand paper is coated on the first working section and wraps the rubber strips;
the shape of the first working section wrapped with the abrasive paper is matched with the hole to be honed; the above-mentionedThe shape of the second working section is matched with the hole to be honed or the outer diameter of the second working section is smaller than the aperture of the hole to be honed; the inner diameter of the hole to be honed is less than
2. The aperture composite honing head according to claim 1 wherein said second working section is cylindrical.
3. The compound honing head for small holes of claim 1, wherein the second working section has an outer diameter smaller than that of the first working section.
4. The compound honing head for small holes of claim 1, wherein the outer diameter of said holding section is larger than the outer diameter of said first working section or the outer diameter of said second working section.
5. The composite honing head for small holes according to claim 1, wherein the base body is provided with a plurality of grooves, and the grooves are located at one or both axial ends of the plurality of grooves and are communicated with the grooves.
6. The compound honing head for small holes of claim 1, wherein the end portion of the first working segment is provided with a guiding head, and the outer surface of the guiding head is a conical cylindrical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110325877.8A CN113021171B (en) | 2021-03-26 | 2021-03-26 | Compound honing head for small hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110325877.8A CN113021171B (en) | 2021-03-26 | 2021-03-26 | Compound honing head for small hole |
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| Publication Number | Publication Date |
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| CN113021171A CN113021171A (en) | 2021-06-25 |
| CN113021171B true CN113021171B (en) | 2022-09-13 |
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| CN202110325877.8A Active CN113021171B (en) | 2021-03-26 | 2021-03-26 | Compound honing head for small hole |
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| CN113021171A (en) | 2021-06-25 |
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