CN112743367B - Thin-wall part machining tool and using method thereof - Google Patents
Thin-wall part machining tool and using method thereof Download PDFInfo
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- CN112743367B CN112743367B CN202011459456.6A CN202011459456A CN112743367B CN 112743367 B CN112743367 B CN 112743367B CN 202011459456 A CN202011459456 A CN 202011459456A CN 112743367 B CN112743367 B CN 112743367B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/084—Work-clamping means other than mechanically-actuated using adhesive means
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Abstract
The invention discloses a thin-wall part machining tool which comprises a tool base disc, wherein a part installation groove is formed in the tool base disc, a thin-wall part is arranged in the part installation groove, a positioning hole is formed in the edge of the part installation groove, and a positioning piece with a plastic shape is arranged in the positioning hole. The invention also discloses a using method of the processing tool for processing the thin-wall part, the thin-wall part is positioned through hot melt adhesive, the hot melt adhesive is filled into the positioning hole and the gap between the thin-wall part and the part mounting groove to form a positioning piece and a positioning pressure plate for positioning, and the positioning pressure plate is matched with the positioning piece to realize the stress-free stable limiting of the thin-wall part.
Description
Technical Field
The invention relates to the technical field of machine manufacturing, in particular to a thin-wall part machining tool and a using method thereof.
Background
In the manufacturing process of semiconductor equipment, thin-wall high-precision parts are often required to be processed, and the strength and rigidity of the parts are poor due to the structures of the parts, so that stress deformation and clamping deformation are easily generated in the processing process, and the dimensional precision of the parts is influenced.
The existing processing and clamping methods comprise three methods: 1. the part is clamped by a round soft claw with the same diameter as the part to be processed; 2. the special tool locks the special pressing plate by a screw to fix the part for processing. In the methods 1 and 2, because radial and axial clamping force and pressing force are respectively applied, the dimensional accuracy is qualified in the processing process during clamping, but the product is seriously deformed after loosening, and the dimensional accuracy, the flatness and the roundness of the deformed part are seriously out of tolerance. And the method in the step 3 is to clamp the thin-wall workpiece by a stress-free clamping method. For example, the publication "CN 111203738A" of "a method for processing an unstressed clamping for a reference surface of an open thin-walled part disclosed in chinese patent document can make the open thin-walled part maintain the unstressed clamping state when processing the reference surface, thereby satisfying the requirement for processing accuracy. The base is used as a hardware base, the hot melt adhesive and the low-melting-point alloy are respectively used as important elements and main elements, the position of the opening thin-wall part in the base is limited by the hot melt adhesive, the low-melting-point alloy subjected to solid-liquid conversion at a certain temperature provides supporting force and rigidity for the opening thin-wall part, and finally milling of a reference surface of the opening thin-wall part before finish machining is achieved. The device carries out hot melt adhesive dispensing at a specific point position to realize the limitation of the base to the opening thin-wall part, but the connection strength of the limiting mode is not ideal, and the problem of non-ideal processing quality is easily caused by looseness or deviation caused by processing vibration in the processing process of the thin-wall part.
Disclosure of Invention
The invention provides a thin-wall part processing tool and a using method thereof, aiming at the problems that the 1 st clamping method can radially clamp a thin-wall part, the 2 nd clamping method can axially compress the thin-wall part, and both the two methods influence the size precision of the thin-wall high-precision part.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a processing frock of thin wall part, includes the frock base plate, be provided with the part mounting groove on the frock base plate, the thin wall part sets up in the part mounting groove, part mounting groove edge is provided with the locating hole, be provided with the plastic setting element of form in the locating hole. The locating hole sets up in the edge of part mounting groove, after thin wall part inserts and gets into in the part mounting groove, at the raw and other materials of the filling setting element in the locating hole, after the part shaping to be located, the setting element with thin wall part butt in the part mounting groove, this kind of spacing mode can not exert pressure to the thin wall part, but laminating thin wall part edge is spacing, effectively avoids thin wall part atress to warp.
Preferably, the positioning hole is internally provided with internal threads, and the positioning piece is in threaded connection with the positioning hole. The locating hole is the screw hole, and after plastic setting element of form got into the locating hole and the shaping, setting element and locating hole threaded connection appeared between thin wall part and the frock basepan in can effectively avoiding the course of working relative displacement, the condition of extruding the setting element can not appear.
Preferably, the positioning piece is a hot melt adhesive piece. The setting element that the hot melt adhesive was made possesses the plastic characteristic of form, and plasticity is strong, can follow the thin wall part edge of the profile laminating of thin wall part, fills the locating hole simultaneously, and is spacing with thin wall part in the part mounting groove.
Preferably, the positioning holes are arranged on the end surface of the bottom of the part mounting groove at equal intervals along the circumferential direction. The part mounting groove is also provided with a plurality of positioning holes, when the part is positioned, the edges of the part mounting groove and the positioning holes inside the part mounting groove are filled with hot melt adhesive, and the mounting stability of the thin-wall part is further improved.
Preferably, the tool base plate is divided into a part inner diameter machining disc and a part outer diameter machining disc, wherein part mounting grooves are formed in the part inner diameter machining disc and the part outer diameter machining disc, the part mounting grooves of the part inner diameter machining disc are formed in the middle of the part inner diameter machining disc, and the part mounting grooves of the part outer diameter machining disc are formed in the outer edge of the part outer diameter machining disc. The part inner diameter machining disc is of a disc-shaped structure with the concave middle part, the thin-wall part is installed in a part installation groove in the middle of the part inner diameter machining disc, and correspondingly, after the thin-wall part is sleeved on the outer edge of the part outer diameter machining disc, the thin-wall part outer diameter surface and the end face corresponding to the outer diameter surface can be subjected to finish machining.
Preferably, the positioning element comprises a stud and a pressing body arranged at the tail of the stud, the pressing body is hemispherical, the pressing body comprises a hemispherical surface and a flat-bottom circular surface, the flat-bottom circular surface of the pressing body and the stud are integrally formed, the radius of the flat-bottom circular surface of the pressing body is larger than that of the stud, the outer edge of the joint of the flat-bottom circular surface and the stud is a pressing surface, and the pressing surface can abut against the thin-wall part. The pressing body is of a screw structure, the stud at the front end is used for being connected with the positioning hole, one side of the pressing body at the tail part of the stud is abutted against the edge of the part mounting groove, and the other side of the pressing body is abutted against the outer edge of the thin-wall part, so that the thin-wall part is limited.
The invention also discloses a use method of the thin-wall part machining tool, which comprises the following steps:
step A: wiping the tool base disc and the thin-wall part to be finely machined clean by using alcohol;
and B: installing the thin-wall part on a part installation groove of the tool base plate;
and C: filling hot melt adhesive into a positioning hole on the tool base plate, and filling the hot melt adhesive into a gap between the side wall of the thin-wall part and the part mounting groove;
step D: performing finish machining on the radial surface and the end surface of the thin-wall part which is not attached to the part mounting groove;
step E: and after the machining is finished, taking down the hot melt adhesive for fixing the parts and the tool base plate, and then taking down the machined parts to finish the machining of the thin-wall parts.
The hot melt adhesive is used as a plastic material, can be installed on the part installation groove of the tool base plate at the thin-wall part, fills the gap between the thin-wall part and the part installation groove, fills the positioning hole, can effectively position the thin-wall part after the hot melt adhesive is cooled, and ensures the stress deformation of the thin-wall part. The thin-walled part is then finish machined. After finishing, directly take off the pressure disk that the hot melt adhesive formed between part mounting groove and thin wall part, simultaneously, will set up the setting element in the locating hole and unscrew, can take off processing frock with thin wall part smoothly.
Preferably, the part mounting groove is provided with a positioning hole, an internal thread is arranged in the positioning hole, the hot melt adhesive forms a positioning part in the positioning hole, and the hot melt adhesive forms a positioning pressure plate at a gap between the side wall of the thin-wall part and the part mounting groove. The location pressure disk that the hot melt adhesive formed can be spacing thin wall part in the part mounting groove, and the setting element that the hot melt adhesive formed then can further fix a position thin wall part, avoids it to appear vibrating scheduling problem in the finish machining in-process and leads to becoming flexible even breaking away from, effectively promotes the processingquality of thin wall part. Simultaneously, setting element and the location pressure disk that the hot melt adhesive formed can the quickly separating, effectively promote machining efficiency.
Therefore, the invention has the following beneficial effects: (1) the thin-wall part is positioned through hot melt adhesive, the hot melt adhesive is filled into the positioning hole and the joint of the thin-wall part and the part mounting groove to form a positioning piece and a positioning pressure plate for positioning, and the positioning pressure plate is matched with the positioning piece to realize stress-free stable limiting of the thin-wall part; (2) after the positioning piece with plastic shape enters the positioning hole and is molded, the positioning piece is in threaded connection with the positioning hole, so that the relative displacement between the thin-wall part and the tool base plate in the machining process can be effectively avoided, and the condition of extruding the positioning piece can not occur; (3) the part inner diameter machining disc and the part outer diameter machining disc are respectively used for meeting different machining requirements, and stable limiting can be realized under the condition that force is not applied to the thin-wall part; (4) the processing tool is simple in structure and convenient to use.
Drawings
Fig. 1 is a cross-sectional view of the clamping method of the first embodiment of the background art.
Fig. 2 is a cross-sectional view of the 2 nd clamping method in the background art.
FIG. 3 is a sectional view of an inner diameter machining disk of the parts of example 1.
FIG. 4 is a sectional view of an outer diameter machining disk of the part of example 2.
Fig. 5 is a schematic working diagram of the inner diameter machining disc of the part in embodiment 1 after clamping the thin-walled part.
Fig. 6 is a front view of the inner diameter machining disc of the part clamping the thin-walled part in embodiment 1.
In the figure: 100. the tool comprises a tool base plate 101, a part inner diameter machining plate 102, a part outer diameter machining plate 1, a part mounting groove 2, a positioning hole 21, an internal thread 3, a positioning piece 4, a stud, 5, a pressing body 51, a pressing surface 52, a positioning pressure plate 6, a diameter surface 7 and an end surface.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
As shown in fig. 5 and 6, the thin-wall part processing tool comprises a tool base plate 100, wherein a part mounting groove 1 is formed in the tool base plate, the thin-wall part is arranged in the part mounting groove, a positioning hole 2 is formed in the edge of the part mounting groove, and a positioning part 3 with a plastic shape is arranged in the positioning hole. The locating hole sets up in the edge of part mounting groove, after thin wall part inserts and gets into in the part mounting groove, at the raw and other materials of the filling setting element in the locating hole, after the part shaping to be located, the setting element with thin wall part butt in the part mounting groove, this kind of spacing mode can not exert pressure to the thin wall part, but laminating thin wall part edge is spacing, effectively avoids thin wall part atress to warp.
The positioning hole is internally provided with internal threads 21, and the positioning piece is in threaded connection with the positioning hole. The locating hole is the screw hole, and after plastic setting element of form got into the locating hole and the shaping, setting element and locating hole threaded connection appeared between thin wall part and the frock basepan in can effectively avoiding the course of working relative displacement, the condition of extruding the setting element can not appear. The positioning piece is a hot melt adhesive piece. The setting element that the hot melt adhesive was made possesses the plastic characteristic of form, and plasticity is strong, can follow the thin wall part edge of the profile laminating of thin wall part, fills the locating hole simultaneously, and is spacing with thin wall part in the part mounting groove.
The positioning holes are arranged on the end face of the bottom of the part mounting groove at equal intervals along the circumferential direction. The part mounting groove is also provided with a plurality of positioning holes, when the part is positioned, the edges of the part mounting groove and the positioning holes inside the part mounting groove are filled with hot melt adhesive, and the mounting stability of the thin-wall part is further improved.
The setting element includes double-screw bolt 4 and sets up in the pressfitting body 5 of double-screw bolt afterbody, the pressfitting body is the hemisphere type, the pressfitting body includes hemisphere face and flat base disc, the flat base disc and the double-screw bolt integrated into one piece of pressfitting body, the flat base disc radius of pressfitting body is greater than the radius of double-screw bolt, the outer fringe of flat base disc and double-screw bolt junction is pressfitting face 51, but pressfitting face butt thin wall part. The pressing body is of a screw structure, the stud at the front end is used for being connected with the positioning hole, one side of the pressing body at the tail part of the stud is abutted against the edge of the part mounting groove, and the other side of the pressing body is abutted against the outer edge of the thin-wall part, so that the thin-wall part is limited.
The invention also discloses a use method of the thin-wall part machining tool, which comprises the following steps:
step A: wiping the tool base disc and the thin-wall part to be finely machined clean by using alcohol;
and B: installing the thin-wall part on a part installation groove of the tool base plate;
and C: filling hot melt adhesive into a positioning hole on the tool base plate, and filling the hot melt adhesive into a gap between the side wall of the thin-wall part and the part mounting groove;
step D: performing finish machining on the radial surface 6 and the end surface 7 of the thin-wall part which are not attached to the part mounting groove;
step E: and after the machining is finished, taking down the hot melt adhesive for fixing the parts and the tool base plate, and then taking down the machined parts to finish the machining of the thin-wall parts.
The hot melt adhesive is used as a plastic material, can be installed on the part installation groove of the tool base plate at the thin-wall part, fills the gap between the thin-wall part and the part installation groove, fills the positioning hole, can effectively position the thin-wall part after the hot melt adhesive is cooled, and ensures the stress deformation of the thin-wall part. The thin-walled part is then finish machined. After finishing, directly take off the pressure disk that the hot melt adhesive formed between part mounting groove and thin wall part, simultaneously, will set up the setting element in the locating hole and unscrew, can take off processing frock with thin wall part smoothly.
Be provided with the locating hole on the part mounting groove, be provided with the internal thread in the locating hole, the hot melt adhesive forms the setting element in the locating hole, the gap department of hot melt adhesive between thin wall part lateral wall and part mounting groove forms location pressure disk 52. The location pressure disk that the hot melt adhesive formed can be spacing thin wall part in the part mounting groove, and the setting element that the hot melt adhesive formed then can further fix a position thin wall part, avoids it to appear vibrating scheduling problem in the finish machining in-process and leads to becoming flexible even breaking away from, effectively promotes the processingquality of thin wall part. Simultaneously, setting element and the location pressure disk that the hot melt adhesive formed can the quickly separating, effectively promote machining efficiency.
In this embodiment, as shown in fig. 3 and 5, the tool base plate is a part inner diameter machining plate, and the part installation groove of the part inner diameter machining plate is disposed in the middle of the part inner diameter machining plate. The part inner diameter machining disc is of a disc-shaped structure with the middle part concave inwards, and the thin-wall part is installed in a part installation groove in the middle of the part inner diameter machining disc. The diameter phi of the thin-wall part is 260mm, the wall thickness is 1.25-2.5 mm, the flatness requirement is 0.02, the roundness requirement of the inner diameter is 0.03, and the requirement on the dimensional accuracy is high. If the clamping method 1 described in the background art is adopted, as shown in fig. 1, the thin-wall part 2.0 is radially clamped by the round soft claws 1.0, and the clamping method applies a radial force to the thin-wall part, such as the direction of a clamping force in the drawing. And the 2 nd clamping method is adopted, as shown in figure 2, a special tool 3.0 is adopted to match with a special pressing plate 4.0 to carry out axial clamping when the size of the thin-wall part is larger than that of the thin-wall part 2.0, and the clamping method applies axial force to the thin-wall part, such as the direction of pressing force in the figure. The clamping deformation of the large-size ultrathin-wall precision part is inevitable by the clamping methods 1 and 2. The positioning piece with the plastic shape disclosed by the embodiment is used for limiting the thin-wall part for one time, and then is used for limiting the thin-wall part for the second time through the positioning pressing disc arranged at the edge of the thin-wall part, so that the double stable limiting of the thin-wall part is effectively realized. The inner end face and the inner diameter face of the thin-walled part may then be finish machined.
Example 2
Different from the embodiment 1, as shown in fig. 4, in this embodiment, the tooling base plate is the part outer diameter processing plate 102, the part installation groove of the part outer diameter processing plate is arranged at the outer edge of the part outer diameter processing plate, the positioning hole is also arranged at the edge of the part installation groove, and after the thin-wall part is sleeved at the outer edge of the part outer diameter processing plate, the positioning hole and the joint of the thin-wall part and the part installation groove are filled with the hot melt adhesive. An operator can finish the outer diameter surface of the thin-walled part and the end surface corresponding to the outer diameter surface.
In addition to the above embodiments, the technical features of the present invention can be re-selected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention which are not described in detail should be regarded as the specific embodiments of the present invention and are within the protection scope of the present invention.
Claims (7)
1. A thin-wall part machining tool is characterized by comprising a tool base plate, wherein a part mounting groove is formed in the tool base plate, a thin-wall part is arranged in the part mounting groove, a positioning hole is formed in the edge of the part mounting groove, and a positioning part with a plastic shape is arranged in the positioning hole; the setting element includes the double-screw bolt and sets up in the pressfitting body of double-screw bolt afterbody, the pressfitting body is the hemisphere type, the pressfitting body includes hemisphere face and flat base disc, the flat base disc and the double-screw bolt integrated into one piece of pressfitting body, the flat base disc radius of pressfitting body is greater than the radius of double-screw bolt, the outer fringe of flat base disc and double-screw bolt junction is the pressfitting face, but pressfitting face butt thin wall part.
2. The thin-wall part machining tool according to claim 1, wherein internal threads are arranged in the positioning hole, and the positioning piece is in threaded connection with the positioning hole.
3. The thin-walled part machining tool according to claim 1, wherein the positioning member is a hot melt adhesive member.
4. The thin-wall part machining tool according to claim 1, wherein the positioning holes are uniformly arranged on the part installation groove along the circumferential direction.
5. The thin-wall part machining tool according to claim 1, wherein the tool base plate is divided into an inner part diameter machining plate and an outer part diameter machining plate, wherein both the inner part diameter machining plate and the outer part diameter machining plate are provided with part installation grooves, the part installation grooves of the inner part diameter machining plate are formed in the middle of the inner part diameter machining plate, and the part installation grooves of the outer part diameter machining plate are formed in the outer edge of the outer part diameter machining plate.
6. The use method of the thin-wall part machining tool according to any one of claims 1 to 5 is characterized by comprising the following steps of:
step A: wiping the tool base disc and the thin-wall part to be finely machined clean by using alcohol;
and B: installing the thin-wall part on a part installation groove of the tool base plate;
and C: filling hot melt adhesive into a positioning hole on the tool base plate, and filling the hot melt adhesive into a gap between the side wall of the thin-wall part and the part mounting groove;
step D: performing finish machining on the radial surface and the end surface of the thin-wall part which is not attached to the part mounting groove;
step E: and after the machining is finished, taking down the hot melt adhesive for fixing the parts and the tool base plate, and then taking down the machined parts to finish the machining of the thin-wall parts.
7. The use method of the thin-wall part machining tool according to claim 6, wherein the positioning pressing plate is formed at a gap between the side wall of the thin-wall part and the part installation groove by hot melt adhesive.
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| CN202011459456.6A CN112743367B (en) | 2020-12-11 | 2020-12-11 | Thin-wall part machining tool and using method thereof |
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| CN114769659A (en) * | 2022-05-23 | 2022-07-22 | 中国科学院光电技术研究所 | Precise boring and milling machining method for high-precision sheet parts |
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| RU2143329C1 (en) * | 1998-07-30 | 1999-12-27 | Саратовское акционерное производственно-коммерческое общество "Нефтемаш" - САПКОН | Method for mounting thin-wall unstable-shape tubular blanks |
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| US5079821A (en) * | 1990-01-08 | 1992-01-14 | John T. Parsons | Matrix-supported machining of slender parts |
| WO2012132773A1 (en) * | 2011-03-31 | 2012-10-04 | 三菱重工業株式会社 | Vacuum-suction-type support jig, plate-shaped workpiece machining method using same, and machined workpiece |
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