CN108723814B - Thin-wall rotating part flange surface drilling and milling fixture - Google Patents
Thin-wall rotating part flange surface drilling and milling fixture Download PDFInfo
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- CN108723814B CN108723814B CN201810371116.4A CN201810371116A CN108723814B CN 108723814 B CN108723814 B CN 108723814B CN 201810371116 A CN201810371116 A CN 201810371116A CN 108723814 B CN108723814 B CN 108723814B
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- thin
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- supporting
- drilling
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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 drilling and milling clamp for a flange surface of a thin-wall rotating member. The thin-wall rotating part flange surface drilling and milling fixture comprises a base, a plurality of supporting rods and supporting rings, wherein the supporting rods are arranged on the base, and the supporting rings are arranged at the top ends of the supporting rods; a self-adaptive height adjusting structure for adjusting the supporting height and keeping the height is arranged between the supporting ring and the supporting rod, so that the top surface of the supporting ring is tightly attached to the lower bottom surface of the flange plate of the thin-wall rotating member; the base is provided with a limiting structure used for limiting the lower end position of the thin-wall rotating part, and the support ring is provided with an avoiding groove corresponding to a flange surface notch to be processed of the thin-wall rotating part and a die hole corresponding to a flange surface hole system to be processed. The drilling and milling clamp can be designed into a reasonable clamp structure according to the flange surface machining characteristics, and is convenient for the operation of machining personnel.
Description
Technical Field
The invention relates to a drilling and milling (drilling and milling) clamp for a flange surface of a thin-wall rotating member, in particular to a special clamp for machining a notch and a hole system of the flange surface of the thin-wall rotating member, and belongs to the technical field of manufacturing of special mechanical clamps.
Background
The thin-wall rotating part has the advantages of compact structure, light weight, material saving and the like, and is widely applied to industrial engineering, in particular to the field of aerospace. Certain thin-wall rotating parts in the aerospace field have poor rigidity; the used material is a difficult-to-process material with high strength, high wear resistance and high heat resistance. Therefore, the parts are subjected to cutting force, cutting heat and clamping force in the machining process, and elastic or plastic deformation is easy to occur, so that the machining quality is influenced.
Aiming at the design of a clamp for a thin-wall rotary workpiece, Chinese patent CN201621164711.3 discloses a clamp for processing the outer wall of a thin-wall cylindrical part, and the technical problem of plastic deformation caused by the fact that the strength of a part cannot meet fixed pressure intensity in the processing process is solved by using an organic plastic plate to tightly press the end part of the workpiece; chinese patent CN201420728800.0 discloses a clamp for turning an outer circle of a thin-wall part, which is characterized in that the inner wall of a workpiece is subjected to uniform extrusion force by pressing an expansion sleeve arranged in the workpiece so as to reduce clamping deformation; chinese patent CN201611046512.7 discloses a bidirectional positioning thin-wall part welding fixture, which adopts a tapered push pin to push an expansion block to compress the inner wall of a rotary part, so as to increase the rigidity of the workpiece.
The clamp is mainly used for machining the outer circle of the thin-wall rotating part and is complex to operate. The existing thin-wall rotating part clamp is less suitable for end face machining, and most auxiliary supports are rigid rods, so that large clamping deformation is generated, and the machining quality of workpieces is influenced. Therefore, aiming at the end face processing of the thin-wall rotating part, the clamp which is reasonable in structure, easy to install and small in clamping error has great engineering significance and practical value.
Disclosure of Invention
The invention aims to provide a drilling and milling clamp for a flange surface of a thin-wall rotating member, which can be used for designing a clamp structure as reasonable as possible according to the flange surface processing characteristics and is convenient for processing personnel to operate.
In order to achieve the purpose, the invention adopts the technical scheme that:
a drilling and milling clamp for a flange surface of a thin-wall rotating member comprises a base, a plurality of supporting rods and supporting rings, wherein the supporting rods are arranged on the base;
a self-adaptive height adjusting structure for adjusting the supporting height and keeping the height is arranged between the supporting ring and the supporting rod, so that the top surface of the supporting ring is tightly attached to the lower bottom surface of the flange plate of the thin-wall rotating member;
the base is provided with a limiting structure used for limiting the lower end position of the thin-wall rotating part, and the support ring is provided with an avoiding groove corresponding to a flange surface notch to be processed of the thin-wall rotating part and a die hole corresponding to a flange surface hole system to be processed.
When the thin-wall rotary part drilling and milling fixture works, the thin-wall rotary part is sleeved on the flange surface drilling and milling fixture, the position of the lower part of the thin-wall rotary part is limited through the limiting structure on the base, the support ring is tightly attached to the flange surface of the thin-wall rotary part through the self-adaptive height-increasing structure, and the end surface of the thin-wall rotary part is further convenient to drill and mill.
According to the embodiment of the invention, the invention can be further optimized, and the following is the technical scheme formed after optimization:
preferably, the limit structure comprises a limit table and a positioning pin which are arranged on the base. The position of the lower end of the thin-wall rotating part is limited by the matching of the limiting table and the positioning pin.
According to the embodiment of the invention, the self-adaptive heightening structure comprises a movable ejector rod arranged at the upper part of the supporting rod, an elastic element arranged between the supporting rod and the movable ejector rod, and a locking element for locking the movable ejector rod on the supporting rod; and a countersunk head matching hole matched with the top end of the movable ejector rod is formed in the lower end surface of the support ring. Therefore, the movable ejector rod is locked on the support rod by adjusting the extending height of the movable ejector rod, and a rigid support is formed on the flange surface of the thin-wall rotating part, so that the end surface of the thin-wall rotating part can be conveniently processed.
Therefore, the self-adaptive height-increasing structure is positioned in the thin-wall rotating part and connected between the base and the support ring, and the support ring is attached to the flange surface of the thin-wall rotating part in a self-adaptive mode.
As a specific installation mode, the upper part of the support rod is provided with an installation hole which is arranged along the axial direction of the support rod, the movable ejector rod is arranged in the installation hole, the top of the movable ejector rod extends out of the installation hole, and a compression spring is arranged between the lower end of the movable ejector rod and the bottom of the installation hole. Thus, the mounting hole also serves as a guide.
In order to better lock the movable ejector rod with the adjusted height on the supporting rod, the locking element is a screw, a screw hole is formed in the side wall of the supporting rod, and the screw penetrates through the screw hole and is tightly pressed on the side wall surface of the movable ejector rod.
In order to limit the axial movement of the movable ejector rod and keep reliable support, the side wall surface of the movable ejector rod is provided with a wedge-shaped surface, the depth of the wedge-shaped surface extending towards the inside of the movable ejector rod is a structure with a small top and a large bottom, and the screw is tightly pressed on the wedge-shaped surface to form a locking support. More preferably, the locking end of the screw is a conical surface tangent to the wedge surface of the movable ejector rod.
Therefore, the screw is connected to the fixed supporting rod through the thread pair, and the screw is tightened to restrain the movable ejector rod from moving in the vertical direction, so that the supporting ring always supports the flange surface of the thin-wall rotating part in the drilling process. In order to avoid the crushing of the contact surface caused by the point-surface contact between the screw and the wedge-shaped surface of the movable ejector rod, the screw is designed into a conical surface tangent to the wedge-shaped surface of the movable ejector rod.
Based on the consideration of rigidity and the like, the number of the supporting rods is 3, 4 or 5. An embodiment of the invention is 4 support rods. The distribution mode can effectively improve the local rigidity of the processing part of the thin-wall rotating part in the drilling and milling process, further improve the reliability of the clamp, realize the minimization of the deformation of the thin-wall rotating part in the processing process of the flange surface and improve the processing quality of the thin-wall rotating part.
In order to conveniently realize the installation of the supporting rods, a plurality of installation holes are formed in the base, the lower ends of the supporting rods are provided with thread sections, and the supporting rods penetrate through the corresponding installation holes and are locked on the base through nuts.
Compared with the prior art, the invention has the beneficial effects that:
1, the adjusting mechanism is of a self-adaptive height-increasing structure, and has the advantages of small clamping error, reliable adjustment and high accuracy;
2, the distribution of the self-adaptive heightening structure fully considers the structural characteristics of the actual processing part of the thin-wall rotating member, and the deformation of the flange surface of the thin-wall rotating member in the drilling and milling process is reduced as much as possible;
3, the invention has simple structure, quick adjustment, high clamping efficiency and repeated use.
Drawings
FIG. 1 is a two-dimensional block diagram of one embodiment of the present invention;
FIG. 2 is a three-dimensional block diagram of one embodiment of the present invention;
FIG. 3 is a schematic diagram of the adaptive boosting architecture of FIG. 1;
FIG. 4 is an assembled schematic view of the clamp;
FIG. 5 is a schematic diagram showing the position of the movable carrier rod connected to the support ring.
In the figure:
1-a base; 2-a nut; 3-positioning pins; 4-thin-walled rotating member; 5-a support rod; 6-compression spring; 7-a screw; 8-movable ejector rods; 9-support ring.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.
A drilling and milling clamp for a flange surface of a thin-wall rotating member is shown in figure 1 and comprises a support ring 9, a base 1, a positioning pin 3 and a self-adaptive height-adjusting structure; the position of the thin-wall rotating part is limited by the limiting table and the positioning pin 3 on the base, so that the holes in the flange plate correspond to the die holes in the support ring one by one. In order to avoid the drill bit and reduce the mass of the clamp, the die hole is processed into a through hole. When the device works, the position of the thin-wall rotating part is limited by the limiting table and the positioning pin on the base; the self-adaptive height-increasing structure is positioned in the thin-wall rotating part and connected between the base and the support ring, and the support ring is automatically and tightly attached to the flange surface of the thin-wall rotating part.
When the thin-wall rotating part is installed, the spring 6 is compressed under the action of the gravity of the support ring 9 and the thin-wall rotating part 4, and the movable ejector rod 8 keeps the reaction force on the support ring 9 due to the existence of the elastic force of the spring, so that the support ring 9 is tightly attached to the lower bottom surface of the inner part of the flange surface of the thin-wall rotating part 4. In order to avoid generating excessive clamping error, the precompression quantity of the spring is reasonably set.
The screw 7 is screwed down to restrain the vertical movement of the movable mandril 8, so that the support ring 9 always supports the flange end face of the thin-wall rotating part 4 in the drilling process. In order to control the supporting height of the movable ejector rod, a wedge angle is arranged in the middle of the movable ejector rod; one end of the movable ejector rod is contacted with the spring, and the other end of the movable ejector rod is connected to the support ring;
the limitation of the space of the thin-wall rotating part and the requirement of the rigidity of the clamp are comprehensively considered, and 4 supporting rods are arranged to realize auxiliary supporting of the thin-wall rotating part. The position of the self-adaptive height-adjusting structure corresponds to the position of the countersunk head matching hole on the support ring one by one; according to the structural characteristics of the flange surface of the thin-wall rotating member, the part with poor rigidity of the thin-wall rotating member is used as a starting point, and the self-adaptive height-adjusting mechanisms are uniformly distributed as far as possible.
On the premise that the machining characteristics of the flange surface of the thin-wall rotating member are known, the clamp can be designed as reasonably as possible, and the operation is convenient.
The foregoing examples are set forth to illustrate the present invention more clearly and are not to be construed as limiting the scope of the invention, which is defined in the appended claims to which the invention pertains, as modified in all equivalent forms, by those skilled in the art after reading the present invention.
Claims (9)
1. A thin-wall rotating member flange surface drilling and milling clamp comprises a base (1), and is characterized by further comprising a plurality of supporting rods (5) arranged on the base (1), and supporting rings (9) arranged at the top ends of the supporting rods (5);
a self-adaptive height adjusting structure for adjusting the supporting height and keeping the height is arranged between the supporting ring (9) and the supporting rod (5), so that the top surface of the supporting ring (9) is tightly attached to the inner lower bottom surface of the flange surface of the thin-wall rotating member (4);
a limiting structure used for limiting the lower end position of the thin-wall rotating part is arranged on the base (1), and an avoiding groove corresponding to a flange surface notch to be machined of the thin-wall rotating part (4) and a die hole corresponding to a flange surface hole to be machined are arranged on the supporting ring (9);
when the thin-wall rotary part drilling and milling fixture works, the thin-wall rotary part is sleeved on the thin-wall rotary part flange surface drilling and milling fixture, the position of the lower part of the thin-wall rotary part is limited through the limiting structure on the base (1), and the support ring (9) is tightly attached to the thin-wall rotary part flange surface through the self-adaptive heightening structure.
2. The thin-wall rotating member flange surface drilling and milling clamp according to claim 1, wherein the limiting structure comprises a limiting table and a positioning pin (3) which are arranged on a base (1).
3. The thin-wall rotating member flange surface drilling and milling fixture as claimed in claim 1, wherein the adaptive height-adjusting structure comprises a movable ejector rod (8) mounted on the upper portion of the support rod (5), an elastic element arranged between the support rod (5) and the movable ejector rod (8), and a locking element for locking the movable ejector rod (8) on the support rod (5); the lower end face of the support ring (9) is provided with a countersunk matching hole matched with the top end of the movable ejector rod (8).
4. The thin-wall rotating member flange surface drilling and milling clamp according to claim 3, characterized in that the upper part of the support rod (5) is provided with a mounting hole along the axial direction, the movable ejector rod (8) is arranged in the mounting hole, the top of the movable ejector rod (8) extends out of the mounting hole, and a compression spring (6) is arranged between the lower part of the movable ejector rod (8) and the bottom of the mounting hole.
5. The thin-walled rotating member flange face drilling and milling fixture according to claim 3, wherein the locking element is a screw (7), a screw hole is formed in the side wall of the supporting rod (5), and the screw (7) penetrates through the screw hole and is tightly pressed on the side wall face of the movable mandril (8).
6. The thin-wall rotating member flange surface drilling and milling clamp according to claim 5, wherein the side wall surface of the movable ejector rod (8) is a wedge-shaped surface, the depth of the wedge-shaped surface extending towards the movable ejector rod (8) is a structure with a small top and a large bottom, and the screw (7) is tightly pressed on the wedge-shaped surface to form a locking support.
7. The thin-wall rotating member flange surface drilling and milling clamp according to claim 6, wherein the locking end of the screw (7) is a conical surface tangent to the wedge surface of the movable ejector rod (8).
8. The thin-walled rotating member flange face drilling and milling fixture according to any one of claims 1 to 7, wherein the number of the support rods (5) is 3, 4 or 5.
9. The thin-wall rotating member flange surface drilling and milling fixture as claimed in any one of claims 1 to 7, wherein a plurality of mounting holes are formed in the base (1), the lower ends of the support rods (5) are provided with threads, and each support rod (5) passes through the corresponding mounting hole and is locked on the base (1) through a nut (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810371116.4A CN108723814B (en) | 2018-04-24 | 2018-04-24 | Thin-wall rotating part flange surface drilling and milling fixture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810371116.4A CN108723814B (en) | 2018-04-24 | 2018-04-24 | Thin-wall rotating part flange surface drilling and milling fixture |
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| CN108723814A CN108723814A (en) | 2018-11-02 |
| CN108723814B true CN108723814B (en) | 2020-04-24 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109332729A (en) * | 2018-12-07 | 2019-02-15 | 金湖县常盛动力机械配件有限公司 | A kind of automatic machining device of roller body workpiece bottom outlet |
| CN112338457B (en) * | 2020-10-28 | 2021-12-07 | 厦门健康伦自动仪器有限公司 | Machining process for circular ring thin-wall workpiece |
| CN112548617B (en) * | 2020-11-23 | 2022-05-17 | 中国航发沈阳黎明航空发动机有限责任公司 | Thin-wall mounting edge wall thickness turning device for sheet metal cylindrical part |
| CN113369532A (en) * | 2021-06-29 | 2021-09-10 | 贵州航天电子科技有限公司 | A side direction hole processingequipment for frame part |
| CN115319507A (en) * | 2022-09-20 | 2022-11-11 | 重庆骏普康实业有限公司 | Automobile parts drilling is with quick fixed positioning mechanism |
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| CN207139349U (en) * | 2017-09-15 | 2018-03-27 | 烟台万隆真空冶金股份有限公司 | A kind of processing tool of large thin-wall cylindrical element |
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| JPH10315085A (en) * | 1997-05-13 | 1998-12-02 | Nippon Steel Corp | Aligning device for ring-shaped object |
| CN101829920A (en) * | 2010-06-02 | 2010-09-15 | 南通弘峰机电有限公司 | Outer module clamping device of inner circle of wind driven generator shell |
| CN204321661U (en) * | 2014-11-19 | 2015-05-13 | 经纬纺织机械股份有限公司 | The floating auxiliary support apparatus of a kind of machining large foundry goods and sheet parts |
| CN105345515B (en) * | 2015-11-13 | 2018-05-15 | 航天科工哈尔滨风华有限公司 | A kind of large thin-wall taper housing part digital control processing is loaded positioner |
| CN205184330U (en) * | 2015-11-30 | 2016-04-27 | 罗岩 | Fixture |
| 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 |
| CN206436019U (en) * | 2017-01-17 | 2017-08-25 | 苏州杰信精密机械制造有限公司 | Specific jig |
| CN206912719U (en) * | 2017-04-14 | 2018-01-23 | 中国商用飞机有限责任公司 | A kind of support meanss for mirror image milling |
| CN206839652U (en) * | 2017-06-18 | 2018-01-05 | 禹州市灵龙渔机泵业有限公司 | A kind of sludge water pump outlet pipe processing unit (plant) |
| CN207087366U (en) * | 2017-06-23 | 2018-03-13 | 上海马力索精密机械有限公司 | A kind of thin-walled parts found Vehicle Processing frock |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207139349U (en) * | 2017-09-15 | 2018-03-27 | 烟台万隆真空冶金股份有限公司 | A kind of processing tool of large thin-wall cylindrical element |
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