CN111941379B - Device for scribing special-shaped hollow section bar - Google Patents
Device for scribing special-shaped hollow section bar Download PDFInfo
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- CN111941379B CN111941379B CN202010872115.5A CN202010872115A CN111941379B CN 111941379 B CN111941379 B CN 111941379B CN 202010872115 A CN202010872115 A CN 202010872115A CN 111941379 B CN111941379 B CN 111941379B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H7/00—Marking-out or setting-out work
- B25H7/04—Devices, e.g. scribers, for marking
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Abstract
The application discloses a device for drawing a line of special-shaped hollow section bar, including the model and fixed locating piece that sets up in the model below, wherein: a counter bore is formed in the chord line of the positioning block, a mounting hole penetrating out of the bottom of the positioning block and an annular groove are formed in the bottom surface of the counter bore, and a spring is assembled in the annular groove; a pair of sliding holes communicated with the mounting holes are symmetrically formed on two sides of the positioning block, and positioning pieces are respectively and slidably assembled in the pair of sliding holes; a plane is processed on the side surface of the positioning piece, and a groove is formed in the plane; a bevel is processed on the other side opposite to the plane; two ends of the spring are respectively clamped into grooves on the positioning pieces assembled in the pair of sliding holes; an adjusting screw rod is assembled through the mounting hole, and the adjusting screw rod is provided with a conical surface matched with the upper inclined surface of the positioning piece; and a knurled nut matched with the adjusting screw is arranged above the sample plate. The scribing device is simple in structure, convenient to assemble and disassemble, accurate in positioning, high in scribing quality, beneficial to improvement of production quality and efficiency, and high in practical value.
Description
Technical Field
The application relates to the field of tooling design, in particular to a device for scribing a hollow profile with different shapes.
Background
Some helicopter tail rotor is formed by machining hollow thin-wall aluminum alloy section, the inner cavity of the hollow thin-wall aluminum alloy section is special-shaped, the outer shape is processed into a curved surface with special wing shape by taking the inner cavity as a reference, and the hollow thin-wall aluminum alloy section has a wall thickness with a certain size.
The milling processing of the appearance of the hollow thin-wall aluminum alloy section firstly aims at a chord line by taking the inner cavity of the hollow thin-wall aluminum alloy section as a reference, then marks out appearance lines with special shapes and process processing reference lines, and then processes by taking the mark lines as process reference lines. In actual scribing, the section of the inner cavity of the hollow thin-wall aluminum alloy section is special, and the outline cannot be accurately scribed by using a common scribing tool, so that a special tool is required for scribing.
Disclosure of Invention
The utility model aims at providing a device for special-shaped hollow section bar is drawn a line for solve and use ordinary marking tool can't draw out the problem of appearance line correctly at present.
In order to achieve the above task, the present application adopts the following technical scheme:
the utility model provides a device for special-shaped hollow section bar marking off, includes the template and the fixed locating piece that sets up in the template below, wherein:
a counter bore is formed in the string of the positioning block, and a mounting hole penetrating out of the bottom of the positioning block is formed in the bottom surface of the counter bore; an annular groove is formed in the bottom surface of the counter bore at the outer side of the mounting hole along the circumferential direction, and an annular spring with a notch is arranged in the annular groove; a pair of sliding holes communicated with the mounting holes are symmetrically formed on two sides of the positioning block, and positioning pieces are respectively and slidably assembled in the pair of sliding holes;
a plane is processed on the side surface of the positioning piece, and a groove is formed in the plane; a bevel is processed on the other side opposite to the plane; two ends of the spring are respectively clamped into grooves on the positioning pieces assembled in the pair of sliding holes;
an adjusting screw rod is assembled through the mounting hole, and the adjusting screw rod is provided with a conical surface matched with the upper inclined surface of the positioning piece; and a knurled nut matched with the adjusting screw is arranged above the sample plate.
Further, a pressing block is arranged in the counter bore, the pressing block is of a cylindrical structure, a through hole is formed in the middle of the pressing block, and the through hole is coaxially opposite to the mounting hole after assembly.
Further, the adjusting screw comprises a tightening end and a threaded section, and the conical surface is arranged at the joint of the tightening end and the threaded section.
Further, a semicircular groove is formed in the side face of the tightening end of the adjusting screw in the axial direction, and a semicircular hole is formed in the side face of the bottom of the positioning block, which is located in the mounting hole; the semicircular groove on the adjusting screw rod and the semicircular hole on the side surface of the mounting hole form a cavity together, and a fixed shaft is assembled in the cavity to limit the adjusting screw rod; wherein, fixed axle and semicircle orifice are interference fit.
Further, when the knurled nut is not screwed up relative to the adjusting screw, a pair of positioning pieces assembled in the two side sliding holes of the positioning block are locked and positioned in the sliding holes under the action of the pre-tightening force of the springs; when the knurled nut is screwed up relative to the adjusting screw, the adjusting screw moves axially, so that the conical surface on the adjusting screw contacts with the inclined surface on the positioning piece and generates relative movement, and along with the movement of the adjusting screw, a pair of positioning pieces assembled in the two side sliding holes of the positioning piece are driven to synchronously move towards the outer parts of the two side sliding holes, and at the moment, the spring stretches and deforms; when the knurled nut is reversely screwed, the adjusting screw moves downwards to reset, and at the moment, the pair of locating pieces are pulled back to the inside of the sliding hole under the action of spring force, so that the synchronous movement and synchronous extension of the locating pieces on two sides of the locating piece are realized through adjusting the knurled nut.
Further, the end face of the positioning piece is lower than the bottom surface of the counter bore of the positioning piece.
Further, a handle is fixed above the template.
Further, when the device is used, the whole device is placed into the inner cavity of the special-shaped hollow section bar, and the knurled nuts are adjusted, so that the positioning pieces on two sides of the positioning block synchronously extend out and are in pressure contact with the inner wall of the inner cavity, namely, the positioning of the whole device in the inner cavity of the section bar is realized, and the position of the template in the inner cavity is adjusted; at this time, the scribing tool is used for scribing on the inner wall of the inner cavity along the edge of the sample plate, so that the outline with accurate positioning can be obtained.
The application has the following technical characteristics:
the special-shaped hollow thin-wall section line marking and positioning difficulty is realized. The utility model has the advantages of this application simple structure installs and removes conveniently, and the location is accurate, and the marking quality is high, does benefit to improvement production quality and efficiency, therefore the practicality is better, has great practical value.
Drawings
FIG. 1 is a schematic structural diagram of the application;
FIG. 2 is a schematic diagram of an application structure of the present application;
FIG. 3 is a schematic diagram of a template;
FIG. 4 is a bottom view of the positioning block;
FIG. 5 is an axial cross-sectional schematic view of the positioning block;
FIG. 6 is a schematic structural view of a positioning member;
FIG. 7 is a schematic view of the structure of the spring;
FIG. 8 is a front view of the adjusting screw;
FIG. 9 is a left side view of the adjusting screw;
fig. 10 is a schematic structural view of the briquette.
The reference numerals in the figures illustrate: the aluminum alloy profile comprises a handle, a knurled nut, a washer 3, a template 4, a first positioning hole 4-1, a first fixing hole 4-2, a through hole 4-3, a round hole 4-4, a positioning block 5-1, a chord line 5-2, an adjusting unit 5-3, a semicircular hole 5-4, a second positioning hole 5-5, a counter bore 5-6, a screw hole 5-7, a sliding hole 5-8, a ring groove 5-9, a second fixing hole 5-10, a third fixing hole 5-11, a positioning piece 6-1, a plane 6-2, a groove 6-3, an end face 6-4, a bevel 7, a countersunk screw 8, a spring 9, a fixing shaft 10, a conical surface 10-1, a semicircular groove 10-2, a bolt 11, a positioning shaft 12, a 13-pressing block 13-1, a through hole 13-2, a fastening hole 14 hollow thin-wall aluminum alloy profile.
Detailed Description
Referring to fig. 1 to 10, in order to solve the problem of scribing a special-shaped hollow profile, the application provides a device for scribing the special-shaped hollow profile, which comprises a handle 1, a knurled nut 2, a gasket 3, a template 4, a positioning block 5, a positioning piece 6, a countersunk screw 7, a spring 8, a fixed shaft 9, an adjusting screw 10, a screw 11, a positioning shaft 12 and a pressing block 13.
The template 4 is determined according to the shape of the inner cavity of the actual special-shaped hollow section, and the template 4 with the corresponding shape is selected according to the outline required to be processed before use; and when the cavity is scored, it is finally performed according to the shape of the template 4. In this embodiment, the special-shaped hollow section is taken as a hollow thin-wall aluminum alloy section as an example. In the example given in fig. 3, the profile of the template 4 is the theoretical profile of the trailing blade, the overall plan view is of a boat-shaped structure, and the first positioning holes 4-1 and the first fixing holes 4-2 for being mounted with the positioning blocks 5 are distributed on the chord line, i.e. the central line, of the template 4; through holes 4-3 for mounting knurled nuts 2 and round holes 4-4 for mounting handles 1.
The positioning block 5 is positioned below the template 4, and the shape of the positioning block 5 is matched with the shape of the template 4; the string 5-1 of the positioning block 5 is provided with a second positioning hole 5-5 and a second fixing hole 5-10, after the positioning shaft 12 passes through the first positioning hole 4-10 and the second positioning hole 5-5 to position the sample plate 4 and the positioning block 5, the sample and the positioning block 5 are fixed by using the countersunk head screw 7 to pass through the first fixing hole 4-2 and the second fixing hole 5-10. The molded surface of the positioning block 5 is consistent with the molded surface of the inner cavity of the hollow thin-wall aluminum alloy section bar and is in clearance fit with the hollow thin-wall aluminum alloy section bar. A counter bore 5-6 is formed in the string 5-1 of the positioning block 5, and a mounting hole 5-3 penetrating out of the bottom of the positioning block 5 is formed in the bottom surface of the counter bore 5-6; a section of semicircular hole 5-4 is formed in the side face of the mounting hole 5-3 at the bottom of the positioning block 5, and a fixed shaft 9 is assembled in the semicircular hole. An annular groove 5-9 is formed in the bottom surface of the counter bore 5-6 at the outer side of the mounting hole 5-3 along the circumferential direction, and a screw hole 5-7 is formed in the counter bore 5-6. Slide holes 5-8 communicated with the mounting holes are symmetrically formed in two sides of the positioning block 5 and used for assembling the positioning piece 6, and the axes of the slide holes 5-8 are perpendicular to the axes of the mounting holes 5-3. In addition, third fixing holes 5-11 for installing the handle 1 are formed through the top surface and the bottom surface of the positioning block 5.
The positioning piece 6 is of a cylindrical structure, a section of plane 6-1 is processed on the side surface of the positioning piece, and a groove 6-2 is formed in the plane 6-1; on the opposite side of said plane 6-1 is machined a bevel 6-4. The end surface 6-3 of the positioning piece 6 is a molded surface which is consistent with the molded surface of the inner cavity of the hollow thin-wall aluminum alloy section; the end surface 6-3 of the positioning piece 6 is lower than the bottom surface of the counter bore 5-6 of the positioning piece 5. When in use, one locating piece 6 is respectively assembled in the slide holes 5-8 symmetrically arranged on both sides of the locating piece 5, and one end of the locating piece 6 with the inclined surface 6-4 extends into the slide holes 5-8; the locating piece 6 is in clearance fit with the sliding holes 5-8 and can slide in the clearance fit.
The spring 8 is of an annular structure, and is provided with a notch, so that the overall shape of the spring 8 is C-shaped, the spring 8 is arranged in an annular groove 5-9 on the bottom surface of a counter bore 5-6 on the positioning piece 6, a gap in the radial direction is 4mm, and two ends of the spring 8 are respectively clamped into grooves 6-2 on the positioning piece 6 assembled in two sideslip holes 5-8 of the positioning piece 5.
The pressing block 13 is of a cylindrical structure, a through hole 13-1 is formed in the middle of the pressing block 13, a fastening hole 13-2 is formed in the side face of the through hole 13-1, the pressing block 13 is assembled in a counter bore 5-6 on the positioning block 5, the thickness of the pressing block is consistent with or similar to that of the counter bore 5-6, after the pressing block 13 is assembled, the through hole 13-1 and the mounting hole 5-3 are coaxially opposite, and the pressing block 13 is screwed into the fastening hole 13-2 on the pressing block 13 by a screw 11, and the pressing block 13 is fixed by the screw hole 5-7 in the counter bore 5-6.
The adjusting screw 10 comprises a tightening end and a thread section, a section of conical surface 10-1 is arranged at the joint of the tightening end and the thread section, and a semicircular groove 10-2 is axially formed in the side surface of the tightening end; the adjusting screw 10 passes through the mounting hole 5-3 of the positioning block 5, the through hole 13-1 of the pressing block 13 and the through hole 4-3 of the template 4 from bottom to top in sequence, and is connected with the knurled nut 2 through the gasket 3. The adjusting screw 10 is in clearance fit with the mounting hole 5-3. The fixed shaft 9 is inserted into a cavity formed by the semicircular groove 10-2 on the adjusting screw 10 and the semicircular hole 5-4 on the side surface of the mounting hole 5-3, so that the adjusting screw 10 is limited; wherein, the fixed shaft 9 is in interference fit with the semicircular hole 5-4.
The handle 1 is fixed on the template 4, and the handle 1 is fixed after the mounting bolts pass through the third fixing holes 5-11 of the positioning blocks 5 and the round holes 4-4 on the template 4.
Through the above structural design, when the knurled nut 2 is not screwed down relative to the adjusting screw 10, the pair of positioning pieces 6 assembled in the side sliding holes 5-8 at the two sides of the positioning piece 5 are locked and positioned in the side sliding holes 5-8 under the action of the pretightening force of the spring 8. When the knurled nut 2 is screwed up relative to the adjusting screw 10, the adjusting screw 10 moves axially, so that the conical surface 10-1 on the adjusting screw 10 contacts with the inclined surface 6-4 on the positioning piece 6 and generates relative movement, and along with the movement of the adjusting screw 10, a pair of positioning pieces 6 assembled in the two side sliding holes 5-8 of the positioning piece 5 are driven to synchronously move towards the outside of the two side sliding holes 5-8, and at the moment, the spring 8 stretches and deforms; when the knurled nut 2 is reversely rotated, the adjusting screw 10 moves downwards to reset, and at the moment, the pair of locating pieces 6 are pulled back to the inside of the sliding hole 5-8 under the action of the elastic force of the spring 8, so that the locating pieces 6 on the two sides of the locating piece 5 can synchronously move and synchronously stretch out and draw back through adjusting the knurled nut 2, the inner cavity of the hollow thin-wall aluminum alloy section is conveniently located, the fact that the theoretical chord line of the blade profile of the tail rotor coincides with the actual chord line of the inner cavity profile of the hollow thin-wall aluminum alloy section is ensured, and the scribing is accurate and the quality is high.
On the positioning block 5, the auxiliary structures such as the counter bore 5-6, the mounting hole 5-3, the positioning piece 6 in the mounting hole, the pressing block 13 and the like, and the mutually matched structures such as the adjusting screw 10 and the knurled nut 2 are integrally used as an adjusting unit, one or more than one adjusting unit is arranged in each device according to actual requirements, for example, in the example shown in fig. 1, two adjusting units are arranged, and each adjusting unit can control a pair of positioning pieces 6.
When the device is used, an operator holds the handle 1, puts the whole device into the inner cavity of the hollow thin-wall aluminum alloy section, and adjusts the knurled nut 2 to enable the positioning pieces 6 on two sides of the positioning block 5 to synchronously extend out and be in pressure contact with the inner wall of the inner cavity; after all knurled nuts 2 are adjusted, the whole device is positioned in the inner cavity of the section bar, and therefore the position of the template 4 in the inner cavity is adjusted. At this time, the scribing tool, such as a scribing cutter, performs scribing on the inner wall of the inner cavity along the edge of the template 4, so that an outline with accurate positioning and high quality can be obtained.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced equally; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (6)
1. Device for scribing special-shaped hollow profiles, characterized by comprising a template (4) and a positioning block (5) fixedly arranged below the template (4), wherein:
a counter bore (5-6) is formed in the string line of the positioning block (5), and a mounting hole (5-3) penetrating out of the bottom of the positioning block (5) is formed in the bottom surface of the counter bore (5-6); an annular groove (5-9) is formed in the bottom surface of the counter bore (5-6) at the outer side of the mounting hole (5-3) along the circumferential direction, and an annular spring (8) with a notch is assembled in the annular groove (5-9); a pair of sliding holes (5-8) communicated with the mounting holes (5-3) are symmetrically formed on two sides of the positioning block (5), and positioning pieces (6) are respectively and slidably assembled in the pair of sliding holes (5-8);
a plane (6-1) is processed on the side surface of the positioning piece (6), and a groove (6-2) is formed in the plane (6-1); an inclined plane (6-4) is processed on the other side opposite to the plane (6-1); two ends of the spring (8) are respectively clamped into grooves (6-2) on a positioning piece (6) assembled in a pair of sliding holes (5-8);
an adjusting screw (10) is assembled through the mounting hole (5-3), and the adjusting screw (10) is provided with a conical surface (10-1) matched with the upper inclined surface (6-4) of the positioning piece (6); a knurled nut (2) matched with the adjusting screw (10) is arranged above the template (4);
when the knurled nut (2) is not screwed up relative to the adjusting screw (10), a pair of positioning pieces (6) assembled in the two side sliding holes (5-8) of the positioning block (5) are locked and positioned in the sliding holes (5-8) under the action of the pretightening force of the spring (8); when the knurled nut (2) is screwed up relative to the adjusting screw (10), the adjusting screw (10) moves axially, so that the conical surface (10-1) on the adjusting screw (10) is contacted with the inclined surface (6-4) on the positioning piece (6) and generates relative movement, and along with the movement of the adjusting screw (10), a pair of positioning pieces (6) assembled in two side sliding holes (5-8) of the positioning piece (5) synchronously move towards the outside of the two side sliding holes (5-8), and at the moment, the spring (8) stretches and deforms; when the knurled nut (2) is reversely rotated, the adjusting screw (10) moves downwards to reset, and at the moment, the pair of positioning pieces (6) are pulled back to the inside of the sliding hole (5-8) under the elastic force of the spring (8), so that the synchronous movement and synchronous extension of the positioning pieces (6) on the two sides of the positioning piece (5) are realized by adjusting the knurled nut (2);
when the device is used, the whole device is placed into the inner cavity of the special-shaped hollow section bar, the knurled nuts (2) are adjusted, so that the positioning pieces (6) on the two sides of the positioning block (5) synchronously extend out and are in pressure contact with the inner wall of the inner cavity, namely, the positioning of the whole device in the inner cavity of the section bar is realized, and the positions of the sample plates (4) in the inner cavity are adjusted; at the moment, the scribing tool is used for scribing on the inner wall of the inner cavity along the edge of the template (4), and the outline with accurate positioning can be obtained.
2. Device for scribing profiled hollow section bar according to claim 1, characterized in that the counter bore (5-6) is equipped with a press block (13), the press block (13) is of cylindrical structure, the middle part of the press block (13) is provided with a through hole (13-1), and after assembly the through hole (13-1) is coaxially opposite to the mounting hole (5-3).
3. Device for scribing profiled hollow sections according to claim 1, characterized in that the adjusting screw (10) comprises a tightening end and a threaded section, at the junction of which the conical surface (10-1) is provided.
4. The device for scribing the special-shaped hollow section bar according to claim 1, wherein a semicircular groove (10-2) is axially formed in the side surface of the tightening end of the adjusting screw (10), and a semicircular hole (5-4) is formed in the side surface of the mounting hole (5-3) at the bottom of the positioning block (5); the semicircular groove (10-2) on the adjusting screw (10) and the semicircular hole (5-4) on the side surface of the mounting hole (5-3) form a cavity together, and a fixed shaft (9) is assembled in the cavity to limit the adjusting screw (10); wherein, the fixed shaft (9) is in interference fit with the semicircular hole (5-4).
5. Device for scribing profiled hollow section according to claim 1, characterized in that the end face of the positioning piece (6) is located lower than the bottom face of the counter bore (5-6) of the positioning piece (5).
6. Device for scribing profiled hollow section according to claim 1, characterized in that a handle (1) is fixed above the template (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010872115.5A CN111941379B (en) | 2020-08-26 | 2020-08-26 | Device for scribing special-shaped hollow section bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010872115.5A CN111941379B (en) | 2020-08-26 | 2020-08-26 | Device for scribing special-shaped hollow section bar |
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| Publication Number | Publication Date |
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| CN111941379A CN111941379A (en) | 2020-11-17 |
| CN111941379B true CN111941379B (en) | 2023-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010872115.5A Active CN111941379B (en) | 2020-08-26 | 2020-08-26 | Device for scribing special-shaped hollow section bar |
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| CN (1) | CN111941379B (en) |
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| EP0849049A1 (en) * | 1996-12-21 | 1998-06-24 | Eduard Wille GmbH & Co. | Actuating tool with an angle measuring device for the tightening of threaded parts |
| CN102166663A (en) * | 2011-04-19 | 2011-08-31 | 南京久驰机电实业有限公司 | Quick-change drill chuck |
| CN102319976A (en) * | 2011-06-03 | 2012-01-18 | 哈尔滨飞机工业集团有限责任公司 | Method for processing locating hole of product locating piece in forming mould |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006009874A (en) * | 2004-06-23 | 2006-01-12 | Nissan Motor Co Ltd | Synchronizer for transmission |
| CN102229140A (en) * | 2011-06-30 | 2011-11-02 | 日立泵制造（无锡）有限公司 | Key groove lineation sample plate |
| CN103465049A (en) * | 2013-08-20 | 2013-12-25 | 四川航达机电技术开发服务中心 | Pyramid positioning and expansion device |
| CN105202995B (en) * | 2015-11-10 | 2018-11-09 | 江南工业集团有限公司 | A kind of cylindrical part outer profile geometric tolerance measuring instrument |
| DE102017105091B4 (en) * | 2017-03-10 | 2019-05-02 | Alexander Jentzmyk | Stamping device for marking boreholes |
| CN108890609A (en) * | 2018-09-04 | 2018-11-27 | 沈阳飞机工业（集团）有限公司 | A kind of template lineation device |
| CN109352530A (en) * | 2018-10-12 | 2019-02-19 | 江西昌河航空工业有限公司 | A kind of truer |
| CN109612516A (en) * | 2018-11-23 | 2019-04-12 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of exploration type two point reverse sync mobile positioning mechanism |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0849049A1 (en) * | 1996-12-21 | 1998-06-24 | Eduard Wille GmbH & Co. | Actuating tool with an angle measuring device for the tightening of threaded parts |
| CN102166663A (en) * | 2011-04-19 | 2011-08-31 | 南京久驰机电实业有限公司 | Quick-change drill chuck |
| CN102319976A (en) * | 2011-06-03 | 2012-01-18 | 哈尔滨飞机工业集团有限责任公司 | Method for processing locating hole of product locating piece in forming mould |
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| CN111941379A (en) | 2020-11-17 |
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