CN104741953A - Universal milling fixture for diffuser blades - Google Patents
Universal milling fixture for diffuser blades Download PDFInfo
- Publication number
- CN104741953A CN104741953A CN201510190646.5A CN201510190646A CN104741953A CN 104741953 A CN104741953 A CN 104741953A CN 201510190646 A CN201510190646 A CN 201510190646A CN 104741953 A CN104741953 A CN 104741953A
- Authority
- CN
- China
- Prior art keywords
- base
- diffuser
- milling fixture
- guide post
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
Abstract
The invention discloses a universal milling fixture for diffuser blades. The universal milling fixture comprises a disk-shaped base; a plurality of strip-shaped guide holes are uniformly formed in the base along the circumferential direction; an extension line of every guide hole passes through an axis line of the base; a guide rod which is perpendicular to the upper end surface of the base is arranged in every guide hole; the lower end of every guide rod is provided with a positioning head; the positioning head of every guide rod is matched with the lower end surface of the base to form positioning; the upper end of every guide rod serves as a threaded section which is in threaded matching with a positioning nut; a compression plate which is used for compressing the corresponding diffuser blade is arranged between every positioning nut and the base; the universal milling fixture also comprises two positioning bolts which are used for being inserted into positioning pin holes respectively to position a diffuser, wherein the positioning pin holes are formed in the base. According to the universal milling fixture for the diffuser blades, different sizes of diffusers can be clamped and accordingly the universality is high, the number of toolings required by the factory is reduced, the tooling management is convenient, the labor intensity of workers is reduced, the production and manufacturing period is shortened, and the production cost is reduced.
Description
Technical field
The present invention relates to diffuser field, particularly relate to a kind of general milling fixture of diffuser vane.
Background technology
Diffuser is critical component heat recovery system being improved to vapor (steam) temperature and pressure in the diffuser system of the machines such as vapour compression machine, aeration type air blast, booster to the steam produced by compression.Effect is heated up at the steam pressurized of low pressure or low temperature, to reach the temperature and pressure requirement needed for engineering, so just achieves the secondary diffusion of gas.After gas obtains pressure energy and speed energy by centrifugal action and impeller diffusion in compression impellor, high velocity stream, through diffuser vane diffusion, makes partial velocity change into pressure energy, thus reaches required pressure.Visible diffuser plays vital effect in the high efficiency of raising machine, and therefore, the guarantee of its processing and manufacturing quality also seems particularly important.
The milling fixture of tradition diffuser vane is special fixture, the column location ladder that it is arranged by base upper surface coordinates with diffuser locating hole (coordinate with tooth case during assembling and locate), diffuser is carried out coarse positioning, by latch, diffuser is accurately located again, then by 12 soket head cap screws, diffuser is fixed, complete clamping.Because both vapor compression acc power is different, also different by the gas flow between diffuser vane, cause the aditus laryngis size of diffuser different, thus form is also different, therefore the diffuser appearance and size of often kind of type is all different, and often kind of specification needs to design a set of frock, the milling fixture of traditional diffuser vane is made to there is following shortcoming: 1, frock redesigns loaded down with trivial details, and repetitive operation intensity is large; 2, produce, the manufacturing cycle is long, significantly limit manufacturing schedule; 3, tooling production cost is high; 4, frock quantity is inconvenient to manage.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of general milling fixture of diffuser vane is provided, it can carry out clamping to the diffuser of all size size, versatility is good, reduce the quantity of frock needed for factory, be convenient to tool management, reduce the labour intensity of workman, shorten production, manufacturing cycle, reduce production cost.
The object of the present invention is achieved like this:
A kind of general milling fixture of diffuser vane, comprise base in the form of annular discs, described base is circumferentially evenly provided with some pilot holes in bar shaped, the extended line of each pilot hole is all by the axial line of base, a guide post perpendicular to base upper surface is respectively equipped with in each pilot hole, the lower end of described guide post is provided with positioning head, the positioning head of guide post coordinates to be formed with the lower surface of base locates, the upper end of described guide post is thread segment, on the thread segment of guide post, threaded engagement has setscrew nut, pressing plate for compressing diffuser vane is set between setscrew nut and base, also comprise two fastening screws, in the dowel hole that two fastening screws are respectively equipped with on inserted base, diffuser is located.
In order to ensure the locating effect of pressing plate to diffuser, preferably, described pressing plate is L-type, first right-angle surface of pressing plate is parallel to base upper surface, first right-angle surface extends to the axial line of base, first right-angle surface is provided with the locating hole for coordinating with guide post, and the second right-angle surface of pressing plate extends to base.
In order to improve the locating effect of pressing plate to diffuser further, preferably, the first right-angle surface inside lower end of described pressing plate and the lower end of the second right-angle surface are equipped with arc-shaped protrusions.
In order to improve the scope of pressing plate along pilot hole movement, and then improve the versatility of fixture, preferably, the locating hole in the first right-angle surface of described pressing plate is bar hole, and described locating hole is identical with the bearing of trend of pilot hole on corresponding base.
In order to prevent the positioning head of guide post from giving prominence to base, be beneficial to by floor installation on milling machine table, preferably, the pilot hole on described base is shoulder hole, and the large end of pilot hole coordinates with the positioning head of guide post, forms the axial location of guide post.
In order to prevent guide post rotation, being beneficial to screwed in place nut, ensureing that pressing plate is to the locating effect of diffuser, preferably, the positioning head of described guide post is in oblate, and two narrow limits of positioning head and pilot hole matched in clearance, form the circumference location of guide post.
In order to ensure the positioning precision of diffuser, preferably, described fastening screw and dowel hole join work, and work joined by described dowel hole and diffuser.
In order to be accurately positioned on milling machine table by base, and then improve the positioning precision of diffuser, preferably, described discoid base is provided with the cutting straight line for locating base.
In order to effectively locate the diffuser of all size size, described base is provided with the diffuser of the corresponding plurality of specifications of many group dowel holes.
In order to strengthen adding strong fix to large scale diffuser, or the center pressing plate to the independent location of undersized diffuser, preferably, also comprised for compressing diffuser, the center of center pressing plate is provided with the stud to downward-extension, and lower end and the base center of stud are provided with screwed hole and coordinate fixing.
Owing to have employed technique scheme, the present invention has following beneficial effect:
1, this fixture is not arrange column location ladder by base upper surface to carry out coordinating with diffuser locating hole and locate, but directly compress the marginal portion on diffuser by the pressing plate on base, completely avoid the necessity that often kind of type needs to redesign fixture.
2, the pilot hole on base can adjust according to the size of stationary diffuser to a certain extent, weakens significantly the requiring of appearance and size of diffuser.
3, this fixture can milling diffuser appearance and size from the diffuser of φ 150mm to φ 720mm, saved cost greatly.According to the cost calculation of every sleeve clamp 10,000 yuan, nearly 24 kinds of my company 1 year new product, reduces expenses up to 240,000 yuan, and greatly shortens the production cycle, improve operating efficiency.
4, diffuser both can be compressed by the pressing plate on pilot hole and base engagement by this fixture, and also can be coordinated with center pressing plate by base center screwed hole and be compressed by diffuser, flexible and changeable compression mode can reduce the requirement to diffuser profile.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the present invention;
Fig. 2 is the structural representation of base in Fig. 1;
Fig. 3 is the structural representation of Fig. 1 center platen;
Fig. 4 is the elevational schematic view of Fig. 3 center platen;
Fig. 5 is the structural representation of guide post in Fig. 1;
Fig. 6 is that schematic diagram is looked on a left side of Fig. 5;
Fig. 7 is the structural representation of fastening screw in Fig. 1;
Fig. 8 is the structural representation after clamping diffuser of the present invention;
Fig. 9 is the structural representation of diffuser;
Figure 10 is the C-C cross-sectional schematic of Fig. 9;
Figure 11 is the structural representation of the another kind of embodiment of the present invention.
Reference numeral
In accompanying drawing, 1 is base, and 2 is pilot hole, and 3 is guide post, 4 is positioning head, and 5 is setscrew nut, and 6 is pressing plate, and 7 is fastening screw, 8 is dowel hole, and 9 is the first right-angle surface, and 10 is the second right-angle surface, and 11 is locating hole, 12 is arc-shaped protrusions, and 13 for cutting straight line, pressing plate centered by 14, and 15 is screwed hole, 16 is diffuser, and 17 is diffuser endoporus, and 18 is diffuser marginal portion, 19 is diffuser locating hole, and 20 is diffuser vane, and 21 is diffuser connecting hole.
Detailed description of the invention
See Fig. 1 to Figure 10, for a kind of preferred embodiment of the general milling fixture of diffuser vane, comprise base 1 in the form of annular discs, described discoid base 1 is provided with the cutting straight line 13 for locating base 1, described base 1 is circumferentially evenly provided with six pilot holes 2 in bar shaped, the extended line of each pilot hole 2 is all by the axial line of base 1.In the present embodiment, cut straight line 13 between two adjacent pilot holes 2, while ensureing that the outer end of pressing plate can not exceed base outline, reduce the face area of base.
Be respectively equipped with a guide post 3 perpendicular to base 1 upper surface in each pilot hole 2, the lower end of described guide post 3 is provided with positioning head 4, and the positioning head 4 of guide post 3 coordinates to be formed with the lower surface of base 1 locates.In the present embodiment, the pilot hole 2 on described base 1 is shoulder hole, and the large end of pilot hole 2 coordinates with the positioning head 4 of guide post 3, forms the axial location of guide post 3.Further, the positioning head 4 of described guide post 3 is in oblate, and two narrow limits be parallel to each other of positioning head 4 and pilot hole 2 matched in clearance, form the circumference location of guide post 3.The upper end of described guide post 3 is thread segment, and on the thread segment of guide post 3, threaded engagement has setscrew nut 5, arranges the pressing plate 6 for compressing diffuser vane 20 between setscrew nut 5 and base 1.
Described pressing plate 6 is in L-type, and the first right-angle surface 9 of pressing plate 6 is parallel to base 1 upper surface, and the first right-angle surface 9 extends to the axial line of base 1, and the first right-angle surface 9 is provided with the locating hole 11 for coordinating with guide post 3, and the second right-angle surface 10 of pressing plate 6 extends to base 1.In the present embodiment, the locating hole 11 in the first right-angle surface 9 of described pressing plate 6 is bar hole, and described locating hole 11 is identical with the bearing of trend of pilot hole 2 on corresponding base 1.First right-angle surface 9 inside lower end of described pressing plate 6 and the lower end of the second right-angle surface 10 are equipped with arc-shaped protrusions 12.
During clamping diffuser, the arc-shaped protrusions 12 of the inner of the first right-angle surface 9 contacts with diffuser marginal portion 18 and compresses diffuser, the arc-shaped protrusions 12 of the second right-angle surface 10 lower end contacts with base 1 upper surface, form supplemental support, make pressing plate two ends stress equalization when compressing diffuser, compress better effects if, two arc-shaped protrusions can prevent pressing plate from removing other part diffuser or base contacts of arc-shaped protrusions, diffuser can not be compressed effectively, easily loosen in process.
Also comprise two fastening screws, 7, two fastening screws 7 to locate diffuser in dowel hole 8 that inserted base 1 is respectively equipped with.Described fastening screw 7 joins work with dowel hole 8, and described dowel hole 8 joins work with diffuser, and further, the line of described two dowel holes 8 passes the axial line of base 1.
Also comprise the center pressing plate 14 for compressing diffuser, the center of center pressing plate 14 is provided with the stud to downward-extension, and lower end and base 1 center of stud are provided with screwed hole 15 and coordinate fixing, center pressing plate 14 is contacted with diffuser, compresses diffuser.
The clamping process of this fixture is as follows:
First, by cutting straight line, base is accurately positioned on milling machine table, and is fixed by magnetic force; Then, diffuser is placed on base, utilizes two fastening screws through the diffuser connecting hole 21 of preboring on diffuser, insert in dowel hole, diffuser is accurately positioned on base; Then, six pressing plates are utilized to be fixed by diffuser; Finally, after centering diffuser endoporus, just can carry out the thick finish-milling processing of diffuser vane.
After being machined by diffuser vane, diffuser connecting hole 21 is processed as screwed hole to connect with compressor casing, unnecessary fabrication hole can not be produced, meanwhile, due to the minimizing of allowance, reduce the difficulty of processing of screwed hole.
See Figure 11, it is the structural representation of the another kind of embodiment of the present invention.In the present embodiment, described base 1 is provided with the diffuser of the corresponding plurality of specifications of many group dowel holes 8, and the position along base circumference of each group dowel hole 8 is all identical.Because diffuser vane is odd number sheet, the hole on outer ring is even number, and diffuser is each time after the anglec of rotation, diffuser vane corresponding during Milling Process just not identical, and scrapping just appears in such processing parts.The position along base circumference of each group of dowel hole 8 is all identical, and can ensure that often kind of diffuser specified can be positioned at along the identical position of base circumference, the other technologies feature of the present embodiment is identical with a upper embodiment.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (10)
1. the general milling fixture of a diffuser vane, comprise base in the form of annular discs, it is characterized in that: described base is circumferentially evenly provided with some pilot holes in bar shaped, the extended line of each pilot hole is all by the axial line of base, a guide post perpendicular to base upper surface is respectively equipped with in each pilot hole, the lower end of described guide post is provided with positioning head, the positioning head of guide post coordinates to be formed with the lower surface of base locates, the upper end of described guide post is thread segment, on the thread segment of guide post, threaded engagement has setscrew nut, pressing plate for compressing diffuser vane is set between setscrew nut and base, also comprise two fastening screws, in the dowel hole that two fastening screws are respectively equipped with on inserted base, diffuser is located.
2. the general milling fixture of a kind of diffuser vane according to claim 1, it is characterized in that: described pressing plate is L-type, first right-angle surface of pressing plate is parallel to base upper surface, first right-angle surface extends to the axial line of base, first right-angle surface is provided with the locating hole for coordinating with guide post, and the second right-angle surface of pressing plate extends to base.
3. the general milling fixture of a kind of diffuser vane according to claim 2, is characterized in that: the first right-angle surface inside lower end of described pressing plate and the lower end of the second right-angle surface are equipped with arc-shaped protrusions.
4. the general milling fixture of a kind of diffuser vane according to claim 2, is characterized in that: the locating hole in the first right-angle surface of described pressing plate is bar hole, and described locating hole is identical with the bearing of trend of pilot hole on corresponding base.
5. the general milling fixture of a kind of diffuser vane according to claim 1, is characterized in that: the pilot hole on described base is shoulder hole, and the large end of pilot hole coordinates with the positioning head of guide post, forms the axial location of guide post.
6. the general milling fixture of a kind of diffuser vane according to claim 5, is characterized in that: the positioning head of described guide post is in oblate, and two narrow limits of positioning head and pilot hole matched in clearance, form the circumference location of guide post.
7. the general milling fixture of a kind of diffuser vane according to claim 1, it is characterized in that: described fastening screw and dowel hole join work, work joined by described dowel hole and diffuser.
8. the general milling fixture of a kind of diffuser vane according to claim 1, is characterized in that: described discoid base is provided with the cutting straight line for locating base.
9. the general milling fixture of a kind of diffuser vane according to claim 1, is characterized in that: described base is provided with the diffuser of the corresponding plurality of specifications of many group dowel holes.
10. the general milling fixture of a kind of diffuser vane according to claim 1, it is characterized in that: also comprise the center pressing plate for compressing diffuser, the center of center pressing plate is provided with the stud to downward-extension, and lower end and the base center of stud are provided with screwed hole and coordinate fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190646.5A CN104741953A (en) | 2015-04-21 | 2015-04-21 | Universal milling fixture for diffuser blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190646.5A CN104741953A (en) | 2015-04-21 | 2015-04-21 | Universal milling fixture for diffuser blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104741953A true CN104741953A (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510190646.5A Pending CN104741953A (en) | 2015-04-21 | 2015-04-21 | Universal milling fixture for diffuser blades |
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| CN (1) | CN104741953A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643478A (en) * | 2015-12-27 | 2016-06-08 | 无锡透平叶片有限公司 | Suspension type shot blasting clamp device used for blade root shot blasting of turbine blades |
| CN105666169A (en) * | 2016-03-29 | 2016-06-15 | 浙江三田汽车空调压缩机有限公司 | Tool clamp of numerically-controlled lathe for machining cylinder bodies |
| CN105935936A (en) * | 2015-12-19 | 2016-09-14 | 綦江祥和机械有限公司 | Gear blank fastening device |
| CN107335961A (en) * | 2017-08-29 | 2017-11-10 | 南京磁谷科技有限公司 | A kind of stator welding tooling |
| CN108953230A (en) * | 2018-08-06 | 2018-12-07 | 南京磁谷科技有限公司 | A kind of centrifugal blower diffuser structure |
| CN109060283A (en) * | 2018-10-31 | 2018-12-21 | 安徽江淮汽车集团股份有限公司 | A kind of damping tower universal fixturing |
| CN109909433A (en) * | 2019-03-29 | 2019-06-21 | 北京航空航天大学 | A kind of processing tool and processing method of centrifugal compressor |
| CN111673396A (en) * | 2020-07-09 | 2020-09-18 | 湖南南方通用航空发动机有限公司 | Machining method for large-diameter thin-wall diffuser of aero-engine |
| CN112372242A (en) * | 2020-10-30 | 2021-02-19 | 重庆江增船舶重工有限公司 | Processing method of variable throat diffuser of supercharger |
-
2015
- 2015-04-21 CN CN201510190646.5A patent/CN104741953A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105935936A (en) * | 2015-12-19 | 2016-09-14 | 綦江祥和机械有限公司 | Gear blank fastening device |
| CN105643478A (en) * | 2015-12-27 | 2016-06-08 | 无锡透平叶片有限公司 | Suspension type shot blasting clamp device used for blade root shot blasting of turbine blades |
| CN105666169A (en) * | 2016-03-29 | 2016-06-15 | 浙江三田汽车空调压缩机有限公司 | Tool clamp of numerically-controlled lathe for machining cylinder bodies |
| CN107335961A (en) * | 2017-08-29 | 2017-11-10 | 南京磁谷科技有限公司 | A kind of stator welding tooling |
| CN108953230A (en) * | 2018-08-06 | 2018-12-07 | 南京磁谷科技有限公司 | A kind of centrifugal blower diffuser structure |
| CN109060283A (en) * | 2018-10-31 | 2018-12-21 | 安徽江淮汽车集团股份有限公司 | A kind of damping tower universal fixturing |
| CN109060283B (en) * | 2018-10-31 | 2019-11-05 | 安徽江淮汽车集团股份有限公司 | A kind of damping tower universal fixturing |
| CN109909433A (en) * | 2019-03-29 | 2019-06-21 | 北京航空航天大学 | A kind of processing tool and processing method of centrifugal compressor |
| CN111673396A (en) * | 2020-07-09 | 2020-09-18 | 湖南南方通用航空发动机有限公司 | Machining method for large-diameter thin-wall diffuser of aero-engine |
| CN112372242A (en) * | 2020-10-30 | 2021-02-19 | 重庆江增船舶重工有限公司 | Processing method of variable throat diffuser of supercharger |
| CN112372242B (en) * | 2020-10-30 | 2022-09-23 | 重庆江增船舶重工有限公司 | Processing method of variable throat diffuser of supercharger |
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Application publication date: 20150701 |