CN211163055U - Lathe fixture for ensuring machining of hard tube type slender shaft parts - Google Patents
Lathe fixture for ensuring machining of hard tube type slender shaft parts Download PDFInfo
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- CN211163055U CN211163055U CN201920957131.7U CN201920957131U CN211163055U CN 211163055 U CN211163055 U CN 211163055U CN 201920957131 U CN201920957131 U CN 201920957131U CN 211163055 U CN211163055 U CN 211163055U
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- hard tube
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- positioning
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Abstract
The utility model discloses a lathe fixture for processing and guaranteeing hard tube type slender shaft parts, which comprises a fixed center and a live center, wherein the fixed center comprises a fixed main shaft clamping part, a fixed part positioning and clamping part and a part transmission pin, the fixed part positioning and clamping part is arranged at the front end of the fixed main shaft clamping part, one end of the part transmission pin is arranged at the front end of the fixed main shaft clamping part, the live center comprises a standard live center and a live part positioning and clamping part, the live part positioning and clamping part is arranged at the front end of the standard live center, the utility model can better avoid the inner hole of the hard tube type slender shaft parts from being strained, reduce the clamping deformation of the parts, better solve the problem of processing and guaranteeing the coaxiality (phi 0.05), and has the qualification rate of 100 percent, in addition, the utility model has the characteristics of fast clamping, fast dismounting and no damage to the positioning inner hole, the processing efficiency is improved by more than 4 times.
Description
Technical Field
The utility model relates to a machining anchor clamps technical field especially relates to a turning attachment that is used for the processing of hard tube class slender axles parts to guarantee.
Background
Hard pipe part external thread M10 × 1-6 h hole-to-inner hole
Has a coaxiality of
In the conventional connecting shaft sleeve processing, since the parts are slender and the outer circle is a thread, the thread positioning processing cannot be used
An inner bore. On one hand, the thread is easy to damage, and on the other hand, the fit clearance of the thread tire is large, so that the coaxiality cannot be met
And (4) requiring. So that the processing is usually performed by drilling and twisting
Inner bore, then positioning with mandrel
And (4) carrying out thread machining on the inner hole. The connecting shaft sleeve (hard tube) processed by the method is easy to cause deviation,
the straightness of the inner hole is poor. When the threading shaft is used for positioning and machining the thread,due to the long action length of the mandrel, a sufficiently small fit clearance cannot be ensured
Is difficult to satisfy the coaxiality
Positioning and processing. In addition, under the influence of cutting force, the hard pipe is difficult to clamp and disassemble in the machining process and is easy to strain
An inner bore, the method of which is to be improved. In addition, the hard pipe is made of titanium alloy TC11, and the hard pipe is more difficult to process than other connecting shaft sleeve copper materials, so that the hard pipe becomes a production bottleneck for processing the part.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the lathe fixture for ensuring the machining of the hard tube type slender shaft parts is provided, is used for solving the problem that the precision and the coaxiality of inner holes of hard tube threads cannot meet the requirements when the hard tube type slender shaft parts are machined at present, and is also used for solving the problems that the parts are difficult to clamp and disassemble and the inner holes are easy to strain in the machining process.
The technical scheme is as follows:
the lathe fixture comprises a fixed center and a live center, wherein the fixed center comprises a fixed main shaft clamping part, a fixed part positioning and clamping part and a part transmission pin, the fixed part positioning and clamping part is arranged at the front end of the fixed main shaft clamping part, one end of the part transmission pin is movably arranged at the front end of the fixed main shaft clamping part, the live center comprises a standard live center and a live part positioning and clamping part, and the live part positioning and clamping part is arranged at the front end of the standard live center.
The standard live center is a Morse taper shank.
The fixed main shaft clamping part is also connected with a numerically controlled lathe.
The fit clearance between the positioning and clamping part of the fixing part and the inner hole of the external hard tube type slender shaft part is not more than 0.015 mm.
The fit clearance between the movable part positioning and clamping part and the inner hole of the external hard tube type slender shaft part is not more than 0.015 mm.
The root parts of the fixed part positioning and clamping part and the movable part positioning and clamping part are provided with fillets with the radius of 0.2 mm.
Has the advantages that: the utility model provides a turning attachment for processing of hard tube class slender axles part guarantees can avoid the hole of hard tube class slender axles part to strain betterly, has reduced the clamping of part and has warp, has solved axiality (phi 0.05) processing assurance problem betterly, and the qualification rate 100%, in addition, the utility model has the characteristics of quick clamping, quick dismantlement, do not harm the location hole, machining efficiency improves more than 4 times.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the working process of the present invention;
wherein: the device comprises a main shaft fixing and clamping part 1, a part transmission pin 2, a fixed part positioning and clamping part 3, a standard live center 4 and a movable part positioning and clamping part 5.
Detailed Description
The utility model is further described with the attached drawings, the lathe fixture for processing and guaranteeing the hard tube type slender shaft parts comprises a fixed center and a live center, the fixed center comprises a fixed main shaft clamping part 1, a fixed part positioning clamping part 3 and a part transmission pin 2, when in processing, the part transmission pin 2 drives the part to rotate (the end part of the part is provided with an open slot and is cut off in the subsequent working procedure), the part deformation caused by the increase of the axial pressure of the part due to the cutting rotation in the machining process is eliminated, the fixed part positioning and clamping part 3 is arranged at the front end of the fixed main shaft clamping part 1, one end of the part transmission pin 2 is movably arranged at the front end of the fixed main shaft clamping part 1, the movable point comprises a standard movable point 4 and a movable part positioning and clamping part 5, and the movable part positioning and clamping part 5 is arranged at the front end of the standard movable point 4.
The standard live center 4 is a Morse taper shank.
The fixed main shaft clamping part 1 is also connected with a numerically controlled lathe.
The fit clearance between the fixed part positioning and clamping part 3 and the inner hole of the external hard tube type slender shaft part is not more than 0.015mm, and the fit clearance between the movable part positioning and clamping part 5 and the inner hole of the external hard tube type slender shaft part is not more than 0.015 mm.
The root parts of the fixed part positioning and clamping part 3 and the movable part positioning and clamping part 5 are provided with a fillet with the radius of 0.2mm, so that the automatic centering function of the parts is increased.
The working process is as follows: installing the fixed main shaft clamping part 1 on a main shaft of a lathe (a numerical control lathe), taking down the part transmission pin 2, turning the fixed part positioning and clamping part 3 to the matching size of an inner hole of an external hard tube type slender shaft part, and ensuring that the matching clearance is not more than that of an inner hole of the external hard tube type slender shaft part
Ensuring that the fixed center is coaxial with the turning center of the lathe, and then installing a part transmission pin 2; the movable part positioning and clamping part 5 of the live center is not more than the fit clearance within the tolerance range of 0.048mm
And (4) processing in groups, selecting a standard live center according to the requirement that the fit clearance of the parts is not more than phi 0.015mm, and clamping and positioning the parts as shown in figure 2.
The utility model discloses with hard tube class slender axles part benchmark hole
For the positioning reference, the part is clamped in a natural positioning and clamping mode, so that the clamping deformation before the part is machined is reduced, the cutting deformation during machining is reduced, and the generation of the part after the machining is finished when the part is taken down from the clamp is reducedDeformation of (2). Meanwhile, a smaller positioning gap is matched to ensure
The coaxiality phi of the hole to the external threads M10 × 1-6 h is 0.05.
The utility model discloses tolerance 0.048mm according to part location hole, fixed top and live top's fit clearance has been designed, fixed top is turned out the location excircle on the lathe main shaft, live top's automatic centering function on the lathe tailstock in addition, ensure the part, fixed top, live top is coaxial on the lathe, fixed top and live top's constitution, satisfy the quick clamping of part, fix a position and dismantle the function, through processing verification in batches, the assurance problem that hard tube class slender axles parts machining guarantees the axiality has been solved betterly, the qualification rate 100%, furthermore, the utility model has the characteristics of quick clamping, dismantle fast, do not harm the location hole, machining efficiency improves more than 4 times, avoid the hole strain of hard tube class slender axles parts simultaneously betterly, the clamping that has reduced the part is out of shape.
The above embodiments are only for illustrating the technical conception and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, so as not to limit the protection scope of the present invention, and all the equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (8)
1. The utility model provides a turning attachment that is used for hard tube class slender axles parts machining to guarantee which characterized in that: the movable part clamping device comprises a fixed center and a live center, wherein the fixed center comprises a fixed main shaft clamping part (1), a fixed part positioning clamping part (3) and a part transmission pin (2), the fixed part positioning clamping part (3) is arranged at the front end of the fixed main shaft clamping part (1), one end of the part transmission pin (2) is arranged at the front end of the fixed main shaft clamping part (1), the live center comprises a standard live center (4) and a movable part positioning clamping part (5), and the movable part positioning clamping part (5) is arranged at the front end of the standard live center (4).
2. The lathe fixture for guaranteeing the machining of the hard tube type slender shaft parts as claimed in claim 1, wherein: the standard live center (4) is a Morse taper shank.
3. The lathe fixture for guaranteeing the machining of the hard tube type slender shaft parts as claimed in claim 1, wherein: one end of the part transmission pin (2) is movably arranged at the front end of the fixed main shaft clamping part (1).
4. The lathe fixture for guaranteeing the machining of the hard tube type slender shaft parts as claimed in claim 1, wherein: the fixed main shaft clamping part (1) is also connected with a numerically controlled lathe.
5. The lathe fixture for guaranteeing the machining of the hard tube type slender shaft parts as claimed in claim 1, wherein: the fit clearance between the fixed part positioning and clamping part (3) and the inner hole of the external hard tube type slender shaft part is not more than 0.015 mm.
6. The lathe fixture for guaranteeing the machining of the hard tube type slender shaft parts as claimed in claim 1, wherein: the fit clearance between the movable part positioning and clamping part (5) and the inner hole of the external hard tube type slender shaft part is not more than 0.015 mm.
7. The lathe fixture for guaranteeing the machining of the hard tube type slender shaft parts as claimed in claim 1, wherein: the root of the fixed part positioning and clamping part (3) is provided with a fillet with the radius of 0.2 mm.
8. The lathe fixture for guaranteeing the machining of the hard tube type slender shaft parts as claimed in claim 1, wherein: the root of the movable part positioning and clamping part (5) is also provided with a fillet with the radius of 0.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920957131.7U CN211163055U (en) | 2019-06-24 | 2019-06-24 | Lathe fixture for ensuring machining of hard tube type slender shaft parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920957131.7U CN211163055U (en) | 2019-06-24 | 2019-06-24 | Lathe fixture for ensuring machining of hard tube type slender shaft parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211163055U true CN211163055U (en) | 2020-08-04 |
Family
ID=71819709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920957131.7U Expired - Fee Related CN211163055U (en) | 2019-06-24 | 2019-06-24 | Lathe fixture for ensuring machining of hard tube type slender shaft parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211163055U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110385597A (en) * | 2019-06-24 | 2019-10-29 | 贵州新安航空机械有限责任公司 | A kind of turning attachment guaranteed for the processing of hard tube class elongated shaft part |
-
2019
- 2019-06-24 CN CN201920957131.7U patent/CN211163055U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110385597A (en) * | 2019-06-24 | 2019-10-29 | 贵州新安航空机械有限责任公司 | A kind of turning attachment guaranteed for the processing of hard tube class elongated shaft part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200804 |