CN110315361B - Method and device for ensuring wall thickness of sheet metal forming thin-wall circular ring part - Google Patents
Method and device for ensuring wall thickness of sheet metal forming thin-wall circular ring part Download PDFInfo
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- CN110315361B CN110315361B CN201910567686.5A CN201910567686A CN110315361B CN 110315361 B CN110315361 B CN 110315361B CN 201910567686 A CN201910567686 A CN 201910567686A CN 110315361 B CN110315361 B CN 110315361B
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- sheet metal
- pressing plate
- circular ring
- pressing
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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
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/065—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding workpieces being specially deformable, e.g. made from thin-walled or elastic material
Abstract
The invention discloses a method and a device for ensuring the wall thickness of a sheet metal forming thin-wall circular piece, wherein the device comprises a ring body (1), the upper end surface of the ring body (1) is a plane, an annular groove is arranged on the plane, and the section shape of the annular groove is consistent with that of a non-machined part of the thin-wall circular piece; the pressing plate (2) is positioned above the annular groove, the bottom surface of the pressing plate (2) is a plane, and the pressing plate (2) can move along the axial direction and the radial direction of the ring body (1) respectively. When the thin-wall circular ring part is processed, firstly, the position of the part to be processed of the sheet metal forming thin-wall circular ring part, which exceeds the standard, is pressed, after the flatness of the part is ensured to be qualified, the rest positions which are not pressed are processed to the required thickness, then the position which is processed to the required thickness is pressed, and after the flatness of the part is ensured to be qualified, the rest positions which are not pressed are processed to the required thickness.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a device and a method for forming a thin-wall circular ring piece by machining a metal plate.
Background
The part that the sheet metal becomes thin-walled ring spare (figure 1) and requires to add again machine because the part is found out deformation in the forming process and is leaded to the plane degree of part poor, and the part wall is thin, and thin thickness tolerance is less, and the requirement to machine adds is higher, at present this type of part of processing adopts the mode of tight interior circle that rises, compress tightly the excircle, auxiliary stay terminal surface under the auxiliary stay and processing up end in order to guarantee the wall thickness size, because the lower terminal surface plane degree of part is great, adopt auxiliary stay terminal surface under the auxiliary stay to rectify the positioning reference, this part of multiple spot support also can't eliminate deformation and the cutter effect that shakes in the processing, lead to the unable meeting requirements of this part wall thickness size after the processing.
Disclosure of Invention
The invention aims to provide a device and a method for ensuring the wall thickness of a sheet metal forming thin-wall circular ring part, and solves the problems of inconsistent wall thickness and poor flatness of the sheet metal forming thin-wall circular ring part.
The invention is realized by the following technical scheme:
the device for ensuring the wall thickness of the sheet metal forming thin-wall circular ring part comprises,
the upper end surface of the ring body is a plane, an annular groove is formed in the plane, and the cross section of the annular groove is consistent with that of a non-machined part of the thin-wall ring piece;
and the pressure plate is positioned above the annular groove, the bottom surface of the pressure plate is a plane, and the pressure plate can respectively move along the axial direction and the radial direction of the ring body.
The ring body up end is provided with a plurality of evenly distributed on with the concentric screw on the circumference of ring channel, the screw in-connection has the screw rod, the clamp plate is connected with the screw rod, still is connected with the nut on the screw rod.
The pressing plate is provided with a notch which penetrates through the upper end surface and the lower end surface of the pressing plate.
A processing method for ensuring the wall thickness of a sheet metal forming thin-wall circular ring part comprises the steps of compressing and correcting a standby processing part of the sheet metal forming thin-wall circular ring part in a segmented mode, and processing in a segmented mode, namely, alternately switching a compressing position and a processing position.
A processing method for adopting the device for ensuring the wall thickness of the sheet metal forming thin-wall circular ring part comprises the following steps:
step one, mounting a non-machining part of a sheet metal forming thin-wall circular ring piece into an annular groove of a ring body;
checking the flatness of a part to be machined of the sheet metal formed thin-walled circular ring piece;
thirdly, pressing the position of the standby processing part of the sheet metal forming thin-walled circular ring part with the standard-exceeding flatness by a pressing plate until the flatness is within the tolerance range;
milling the position, which is not pressed by a pressing plate, of the standby processing part of the sheet metal forming thin-walled circular ring part to the required thickness;
and step five, dismantling the pressing plate in the step four, pressing the sheet metal forming thin-wall circular ring part with the processed qualified thickness by using the pressing plate, adjusting the number of the pressing plates and the pressing force, ensuring that the flatness of the overproof position is within a qualified range, and milling the non-pressing plate pressing position to the required thickness.
And furthermore, in the second step, a feeler gauge is inserted into the lower end face of the sheet metal formed thin-wall circular ring and the upper end face of the circular ring to check the flatness.
And furthermore, in the second step, the flatness is checked by adopting the upper end surface of the thin-wall circular ring piece formed by the surface beating sheet metal of the machine tool.
Further, in the third step, the pressing plate is moved along the radial direction of the annular groove, the size of the contact surface between the pressing plate and the sheet metal forming thin-wall circular ring piece is adjusted, the pressing plate is moved along the axial direction of the annular groove, and the size of the pressing force between the pressing plate and the sheet metal forming thin-wall circular ring piece is adjusted.
Further, in the third step, the pressing positions of the pressing plates comprise the position where the flatness on the sheet metal forming thin-wall circular ring piece exceeds the standard and the positions of the left and right adjacent pressing plates of the pressing plates. For example, 24 pressing plates are uniformly distributed on the same circumference, the machining upper end face of the sheet metal formed thin-wall circular ring piece is divided into 24 sections of circular arcs, when the planeness of two sections of circular arcs exceeds the standard, the two pressing plates at the nearest positions of the two sections of circular arcs are used for pressing, and simultaneously, the two pressing plates (one left pressing plate and one right pressing plate) adjacent to the two pressing plates are also pressed.
In the method, the pressing position and the machining position are exchanged once, further, when the requirements cannot be met by adopting one-time pressing and one-time machining, in the fourth step, the thickness machining does not need to be carried out in place once (namely, the thickness machining does not need to be carried out once to the required thickness range), namely, the machining amount in the step is correspondingly reduced, then, in the fifth step, the thickness machining of the pressing position in the fourth step does not need to be carried out in place once, namely, part of the pressing is continuously repeated until the qualified flatness and part of the machining are obtained, and the pressing position and the machining position are continuously switched until the flatness and the thickness requirements are finally met simultaneously.
Compared with the prior art, the processing device and the processing method for ensuring the wall thickness of the sheet metal forming thin-wall circular ring part have the advantages that:
1. the invention can realize the comprehensive contact between the end surface of the thin-wall ring and the clamp, and can prevent the deformation of parts and the occurrence of cutter vibration in the processing process;
2. the invention is convenient to adjust the positioning reference, and if the run-out of a certain end face is overlarge, the run-out (flatness) can be ensured within the tolerance range of the size by pressing the nearby pressing plate and adjusting the pressing force.
Drawings
FIG. 1 is a part diagram of a sheet metal formed thin-walled ring member;
FIG. 2 is a structural diagram of a device for ensuring the wall thickness of a sheet metal forming thin-wall circular ring part;
FIG. 3 is a matching diagram of a device for ensuring the wall thickness of a sheet metal forming thin-wall circular ring part and the sheet metal forming thin-wall circular ring part.
Detailed Description
The technical solution of the present invention is further explained below with reference to the accompanying drawings, but the claimed protection scope is not limited to the above.
Referring to fig. 2 and 3, the device for ensuring the wall thickness of the sheet metal formed thin-wall circular ring part comprises a ring body 1, a pressing plate 2 and a screw rod 3; wherein, the ring body 1 is taken as a main component: the ring body 1 is provided with an annular groove, the section shape of the annular groove is mainly used for tensioning the inner circle of the thin-wall ring part according to the design of specific parts (particularly a non-machining part of a sheet metal forming thin-wall ring part), and the annular groove is used for placing a ring part main body to ensure that the end surface of the part is in full contact with the ring body 1 (figure 3), and the flatness of the ring body 1 is required to be good; 24 threaded holes are distributed on the ring body 1 and are used for being matched with the screw rod 2, the pressing plate 3 and the nut, so that the pressing effect is achieved, and the positioning reference adjusting effect is achieved; for example, when 24 pressing plates 2 are adopted, theoretically, the parts are divided into 24 equal parts, the flatness of 24 positions of the parts is checked by adopting the lower end surface of a feeler gauge plug or the upper end surface of a machine tool, the parts with poor flatness are corrected by adopting the pressing plates 2 close to the pressing force and controlling the pressing force, the corrected parts are processed by utilizing numerical control programming, and the pressing positions of the pressing plates 2 are processed by replacing the positions of the pressing plates 2 by adopting the same method until the wall thickness requirement is met.
The specific operation method comprises the following steps:
a processing method for ensuring the wall thickness of a sheet metal forming thin-wall circular ring part comprises the following steps:
(1) the parts are installed into the annular groove of the ring body 1 as shown in fig. 3;
(2) checking the flatness of the part by using the lower end surface of the feeler gauge plug or the upper end surface of a machine tool;
(3) correcting the flatness of the part to be in a qualified range by pressing a nearby pressing plate 2 (radially moving the pressing plate 2) and controlling the pressing force of the pressing plate 2 (adjusting a nut at the tail end of a screw rod 3);
(4) and (4) milling the part which is not compacted by utilizing numerical control programming to ensure the wall thickness dimension, and repeating the steps (3) and (4) until the wall thickness of the part meets the requirement.
Claims (5)
1. A processing method of a device for ensuring the wall thickness of a thin-wall circular ring part formed by sheet metal is characterized in that the adopted device comprises,
the ring body (1), the upper end of the ring body (1) is a plane, an annular groove is arranged on the plane, and the cross-sectional shape of the annular groove is consistent with that of the non-machined part of the thin-wall circular ring piece;
the pressure plate (2) is positioned above the annular groove, the bottom surface of the pressure plate (2) is a plane, and the pressure plate (2) moves along the axial direction and the radial direction of the ring body (1) respectively;
the upper end face of the ring body (1) is provided with a plurality of screw holes which are uniformly distributed on the circumference concentric with the annular groove, a screw rod (3) is connected in the screw holes, the pressure plate (2) is connected with the screw rod (3), and the screw rod (3) is also connected with a nut;
the pressing plate (2) is provided with a notch which penetrates through the upper end surface and the lower end surface of the pressing plate;
the processing method comprises the following steps:
step one, mounting a non-machining part of a sheet metal formed thin-wall circular ring piece into an annular groove of a ring body (1);
checking the flatness of a part to be machined of the sheet metal formed thin-walled circular ring piece;
thirdly, pressing the position of the part, to be machined, of the sheet metal formed thin-walled circular ring part, of which the flatness exceeds the standard, to be within the flatness tolerance range by using a pressing plate (2);
milling the position, which is not pressed by the pressing plate (2), of the standby processing part of the sheet metal forming thin-walled circular ring part to the required thickness;
and fifthly, removing the pressing plate (2) in the fourth step, pressing the sheet metal formed thin-wall circular ring part with the qualified thickness by using the pressing plate (2), adjusting the number and pressing force of the pressing plate (2), ensuring that the flatness of the overproof position is in a qualified range, and milling the pressing position without the pressing plate (2) to the required thickness.
2. The processing method according to claim 1, characterized in that: and in the second step, a feeler gauge is inserted into the lower end face of the sheet metal formed thin-wall circular ring and the upper end face of the ring body (1) to check the flatness.
3. The processing method according to claim 1, characterized in that: and in the second step, checking the flatness of the upper end face of the thin-wall circular ring piece formed by using a machine tool to meter the sheet metal.
4. The processing method according to claim 1, characterized in that: and in the third step, the pressing plate (2) is moved along the radial direction of the annular groove, the size of the contact surface between the pressing plate (2) and the sheet metal forming thin-walled circular ring piece is adjusted, and the pressing force between the pressing plate (2) and the sheet metal forming thin-walled circular ring piece is adjusted by moving the pressing plate (2) along the axial direction of the annular groove.
5. The processing method according to claim 1, characterized in that: in the third step, the pressing position of the pressing plate (2) comprises a position where the flatness on the sheet metal forming thin-wall circular ring piece exceeds the standard, and positions of the left and right adjacent pressing plates (2) of the pressing plate (2).
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| CN201910567686.5A CN110315361B (en) | 2019-06-27 | 2019-06-27 | Method and device for ensuring wall thickness of sheet metal forming thin-wall circular ring part |
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| CN110315361B true CN110315361B (en) | 2021-05-28 |
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| CN110834207B (en) * | 2019-10-17 | 2021-07-02 | 成都飞机工业（集团）有限责任公司 | Lapping plate replacing tool for multi-surface machining of parts and using method thereof |
| CN112091543B (en) * | 2020-09-14 | 2022-04-19 | 中国航发贵州黎阳航空动力有限公司 | Flame tube head machining device and method |
| CN112338543B (en) * | 2020-09-22 | 2022-02-11 | 中国铁建重工集团股份有限公司 | Ring piece processing system and ring piece processing method |
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| US5680801A (en) * | 1995-11-02 | 1997-10-28 | General Electric Company | Machining damper and method of using same |
| CN102139454A (en) * | 2010-11-19 | 2011-08-03 | 无锡曙光模具有限公司 | Fixture structure for machining large thin-wall annular part |
| CN102950479B (en) * | 2012-08-30 | 2015-02-18 | 哈尔滨汽轮机厂有限责任公司 | Method for realizing machining of combustion-compression ring bushes by using combustion-compression ring bush cutting clamp |
| CN204381895U (en) * | 2014-12-15 | 2015-06-10 | 贵州黎阳国际制造有限公司 | A kind of quick position processing unit (plant) of L-type thin-walled ring |
| CN104690583B (en) * | 2015-03-31 | 2017-12-22 | 西峡县内燃机进排气管有限责任公司 | A kind of segmented exhaust manifold connection neck clamp for machining and processing method |
| CN104889706B (en) * | 2015-05-28 | 2017-06-20 | 北京航空航天大学 | A kind of reverse segmental machining method and device of weak rigid workpiece |
| CN105397108B (en) * | 2015-11-24 | 2018-09-04 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of process of major diameter precision complex profile sheet parts Vehicle Processing |
| CN205271505U (en) * | 2016-01-18 | 2016-06-01 | 哈尔滨汽轮机厂有限责任公司 | A anchor clamps for clamping large flange |
| CN205668160U (en) * | 2016-06-15 | 2016-11-02 | 哈尔滨汽轮机厂有限责任公司 | A kind of thin-wall case special fixture |
| CN106112400B (en) * | 2016-07-19 | 2018-02-13 | 马鞍山方圆精密机械有限公司 | A kind of super-large diameter multistage ring gear processing method |
| CN207656277U (en) * | 2017-11-23 | 2018-07-27 | 韶关市万立齿轮有限公司 | Thin-wall gear inner ring hole fixture |
| CN208231370U (en) * | 2018-04-28 | 2018-12-14 | 河南航天液压气动技术有限公司 | A kind of Thin-wall cylindrical part clamping tooling |
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