CN214816773U - Numerical control milling accurate positioning tool for large precision shaft parts - Google Patents
Numerical control milling accurate positioning tool for large precision shaft parts Download PDFInfo
- Publication number
- CN214816773U CN214816773U CN202121691694.XU CN202121691694U CN214816773U CN 214816773 U CN214816773 U CN 214816773U CN 202121691694 U CN202121691694 U CN 202121691694U CN 214816773 U CN214816773 U CN 214816773U
- Authority
- CN
- China
- Prior art keywords
- clamping block
- support
- numerical control
- positioning
- accurate positioning
- 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.)
- Active
Links
Images
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
The utility model provides a numerical control of large-scale precision shaft class part mills processing accurate positioning frock belongs to aviation repair device technical field. The positioning tool comprises a bottom plate, a support, a lower clamping block, an upper clamping block, a fastening bolt, a fastening nut and a positioning pin. The utility model is based on a measuring and positioning system of a numerical control milling machine, has higher precision than a conventional tool clamp, the precision can reach 0.01mm, and the coordinate of the spatial position can be accurately positioned; meanwhile, the upper clamping block and the lower clamping block can be prepared according to different sizes of workpieces, are convenient to replace and have universality; the utility model discloses do not restrict the shape of part tip, be applicable to equally the sub-assembly of tip shape irregularity, unbalanced weight.
Description
Technical Field
The utility model belongs to the technical field of the aviation is repaired and is put, a accurate clamping location frock of large-scale axle type part is related to, concretely relates to processing is milled to cooperation number in hole on the Y-shaped subassembly of aircraft nose landing gear.
Background
In the repair process of the nose landing gear of the airplane, the wheel fork assembly of the original airplane is scrapped and replaced, a blind hole in a new product needs to be matched with parts of the original airplane for machining, and the position deviation of the matched rear hole is guaranteed to be within +/-0.01 mm.
The problem of clamping and positioning is often involved in the aircraft maintenance process as a typical large-scale precision shaft part. The conventional working vehicle or fixture for assembly, disassembly and transportation only plays a role in fixing and has no precision requirement, but when deep repair is needed, accurate positioning, stable clamping and accurate processing are needed, and the technical requirements cannot be met by the common tool fixture.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an anchor clamps of large-scale precision shaft class part of accurate positioning can realize that the aircraft landing gear mills the accurate positioning centre gripping of processing at the overhaul process numerical control.
The technical scheme of the utility model is that:
the utility model provides a numerical control of large-scale precision shaft class part mills processing accurate positioning frock, includes bottom plate 1, support 2, lower fixture block 3, goes up fixture block 4, fastening bolt 5, fastening nut 6 and locating pin 7.
The support 2 is fixed on the upper surface of the bottom plate 1, wherein a threaded hole is formed in the center of the upper surface of the support 2, and fixing pins 7 are arranged on two sides of the threaded hole and used for alignment and positioning. The lower surface of the lower fixture block 3 is provided with a fixing pin hole matched with the fixing pin 7 on the support 2 and used for alignment and positioning; the lower surface center department of fixture block 3 is equipped with the screw hole down, and fastening bolt penetrates down the screw hole on fixture block 3 and the support 2 and will descend fixture block 3 rigid coupling in the upper end of support 2. The upper clamping block 4 and the lower clamping block 3 are in fastening connection through a fastening bolt 5 and a fastening nut 6, wherein the upper clamping block 4 and the lower clamping block 3 are two involutory semicircles, and the arc radius is the radius size of the shaft part.
Furthermore, the number of the support 2, the number of the lower fixture blocks 3 and the number of the upper fixture blocks 4 are the same, and the support, the lower fixture blocks and the upper fixture blocks are all more than two and are matched for use.
When the clamping device is used, the upper clamping block 4 and the lower clamping block 3 are required to be respectively padded with felt pads with the thickness of 3-5 mm, so that workpieces are prevented from being abraded. Go up fixture block 4 and fixture block 3 down and can prepare according to different work piece external diameter sizes, during the change with fixed pin and fastening bolt location, assembly can.
Before the device is assembled, the circular arc parts of the upper fixture block 4 and the lower fixture block 3 are left with a 0.5mm allowance according to the size of the shaft, and the circle center of the lower fixture block 3 is processed into a semi-finished product with the upward deviation of 0.5 mm. After the bottom plate 1, the support 2 and the lower fixture block 3 are assembled, the support 2 is installed and fixed on a machining platform of a numerically controlled milling machine, then the upper fixture block 4 and the lower fixture block 3 are fastened, a measuring system of the numerically controlled milling machine is used for positioning and aligning, the arc part is subjected to finish machining, and the central line is ensured to be parallel to the X axis of a machine tool coordinate system.
The utility model has the advantages that:
(1) based on the measurement and positioning system of the numerical control milling machine, the precision is higher than that of a conventional tool clamp, and the precision can reach 0.01 mm.
(2) Based on the measuring and positioning system of the numerical control milling machine, the coordinates of the spatial position can be accurately positioned.
(3) The upper clamping block and the lower clamping block can be prepared according to different workpiece sizes, are convenient to replace and have universality.
(4) The shape of the end part of the part is not limited, and the method is also suitable for the assembly with irregular end part shape and unbalanced weight.
Drawings
Fig. 1 is a schematic structural diagram of the device of the present invention.
Fig. 2 is a schematic diagram of the device and the implementation object of the present invention.
In the figure: 1, a bottom plate; 2, a support; 3, arranging a fixture block; 4, mounting a fixture block; 5 fastening the bolt; 6 fastening the nut; 7, positioning pins; 8, workpieces.
Detailed Description
The following embodiments of the present invention will be further explained with reference to the accompanying drawings, but the present invention is not limited thereto.
As shown in fig. 1, the numerical control milling accurate positioning tool for large precision shaft parts comprises a bottom plate 1, a support 2, a lower fixture block 3, an upper fixture block 4, a fastening bolt 5, a fastening nut 6 and a positioning pin 7.
Two supports 2 are symmetrically fixed on the upper surface of the bottom plate 1 through fastening bolts 5, wherein the center of the upper surface of the support 2 is provided with a threaded hole, and two sides of the threaded hole are provided with fixing pins 7 for alignment and positioning. The lower surface of the lower fixture block 3 is provided with a fixing pin hole matched with the fixing pin 7 on the support 2 and used for alignment and positioning; the lower surface center department of fixture block 3 is equipped with the screw hole down, and fastening bolt penetrates down the screw hole on fixture block 3 and the support 2 and will descend fixture block 3 rigid coupling in the upper end of support 2. The upper clamping block 4 and the lower clamping block 3 are in fastening connection through a fastening bolt 5 and a fastening nut 6, wherein the upper clamping block 4 and the lower clamping block 3 are two involutory semicircles, and the arc radius is the radius size of the shaft part.
As shown in fig. 2, when a workpiece is machined, the workpiece 8 is clamped in the tool, and is aligned by a measuring system of the numerically controlled milling machine, and fine adjustment is performed by adjusting the tightness of the fastening bolt, so that the part machining coordinate system coincides with the machine tool coordinate system.
Claims (2)
1. The numerical control milling accurate positioning tool for the large precision shaft parts is characterized by comprising a bottom plate (1), a support (2), a lower clamping block (3) and an upper clamping block (4);
the support (2) is fixed on the upper surface of the bottom plate (1), wherein the upper surface of the support (2) is provided with a fixing pin (7) for alignment and positioning; the lower surface of the lower clamping block (3) is provided with a fixing pin hole matched with a fixing pin (7) on the support (2); the lower fixture block (3) and the support (2) are fixedly connected to the upper end of the support (2) through a fastening bolt (5); the upper clamping block (4) and the lower clamping block (3) are connected through a fastening bolt (5) and a fastening nut (6), wherein the upper clamping block (4) and the lower clamping block (3) are two involutory semicircles, and the radius of the circular arc is the radius of the shaft part.
2. The numerical control milling and accurate positioning tool for the large precision shaft parts according to claim 1, wherein the number of the support (2), the number of the lower fixture blocks (3) and the number of the upper fixture blocks (4) are the same, and the two fixture blocks are matched with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121691694.XU CN214816773U (en) | 2021-07-24 | 2021-07-24 | Numerical control milling accurate positioning tool for large precision shaft parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121691694.XU CN214816773U (en) | 2021-07-24 | 2021-07-24 | Numerical control milling accurate positioning tool for large precision shaft parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214816773U true CN214816773U (en) | 2021-11-23 |
Family
ID=78834072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121691694.XU Active CN214816773U (en) | 2021-07-24 | 2021-07-24 | Numerical control milling accurate positioning tool for large precision shaft parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214816773U (en) |
-
2021
- 2021-07-24 CN CN202121691694.XU patent/CN214816773U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108480923B (en) | Method for precisely machining large thin-wall revolving body part | |
| CN202922287U (en) | Anti-deformation tooling for processing special-shaped thin-walled sleeve | |
| CN107813173A (en) | A kind of turning center fixture of irregular eccentric bonnet | |
| CN103028987B (en) | Numerical control processing fixture for two perpendicularly-crossed shafts | |
| CN214816773U (en) | Numerical control milling accurate positioning tool for large precision shaft parts | |
| CN101391358B (en) | Method for processing welding frame device using bolt, pun bush as positioning reference | |
| CN219598107U (en) | Double-center clamp for rotor finish machining | |
| CN109909694B (en) | Method for processing flange sealing surface of end part of multi-section tower type container by using boring mill | |
| CN203738463U (en) | Adjusting clamp for double-lug ring | |
| CN206123247U (en) | Pneumatic location frock of housing part machine tooling | |
| CN110303355B (en) | Cylindrical workpiece lateral turning tool and processing method | |
| CN211708198U (en) | Self-centering numerical milling fixture for aviation fairing parts | |
| CN113084423A (en) | Telescopic boom forklift frame tailor-welding positioning tool clamp | |
| CN104227071B (en) | Steering yoke bearing hole bore hole special equipment | |
| CN202356917U (en) | Typical curved part boring fixture | |
| CN221019766U (en) | Positioning ring mills fixed location frock | |
| CN219819425U (en) | Multi-station precision machining tool for assembly connecting piece | |
| CN113752062B (en) | Automobile-used frock of complicated weldment | |
| CN219787509U (en) | Coaxial taper hole milling fixture | |
| CN109048207B (en) | Machining method for large wind tunnel compressor hub | |
| CN213730592U (en) | Overturning clamp | |
| CN212020097U (en) | Lathe clamping device | |
| CN112405110B (en) | Precision positioning device for included angle between cutting edge of turning tool and valve core | |
| CN219113416U (en) | Hydraulic support bottom lifting top frame machining tool and machining mechanism | |
| CN219026700U (en) | Valve body machining tool for regulating valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |