CN111673098A - Turning retainer for lathe - Google Patents
Turning retainer for lathe Download PDFInfo
- Publication number
- CN111673098A CN111673098A CN202010563353.8A CN202010563353A CN111673098A CN 111673098 A CN111673098 A CN 111673098A CN 202010563353 A CN202010563353 A CN 202010563353A CN 111673098 A CN111673098 A CN 111673098A
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- CN
- China
- Prior art keywords
- lathe
- turning
- workpiece
- turned
- fixing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B25/00—Accessories or auxiliary equipment for turning-machines
-
- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/72—Auxiliary arrangements; Interconnections between auxiliary tables and movable machine elements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention provides a cutting retainer for a lathe, which comprises: the chuck assembly is used for fixing a workpiece to be turned; and the head of the fixing device is connected with the chuck combination and is used for fixing the chuck combination, wherein the fixing device comprises: the shell is hollow; and the rotating mechanism is arranged in the hollow cavity of the shell and is fixedly connected with the chuck assembly. Compared with a conventional centre retainer, the turning retainer for the lathe, provided by the invention, has the advantages that the interface is matched with an ordinary lathe and a numerical control lathe, the turning rigidity of a workpiece to be turned, especially a slender shaft, can be greatly improved, and the slender shaft instability caused by overlarge acting force of the centre is avoided; the turning precision and the turning efficiency can be effectively ensured.
Description
Technical Field
The invention belongs to the field of machining, and particularly relates to a cutting retainer for a lathe.
Background
The slender shaft is a shaft part with the length-diameter ratio larger than 25. Turning of elongated shafts has been a difficulty in machining. Due to the fact that the overall rigidity of the slender shaft is poor, turning cutter back-off can cause a series of problems of unstable size, poor turning surface and the like.
As shown in FIG. 3, in the prior art, the turning process of the slender shaft is generally that one end of the lathe is clamped by a main shaft of the lathe, and one end of the lathe is kept by an apex. In the prior art, the turning action of the turning tool acts on the surface of the workpiece, which brings about a plurality of problems, such as: the acting force of the tip cannot be too large, and the slender shaft is unstable due to too large acting force; the contact area between the tip and the slender shaft is too small, the retaining effect is limited, and the workpiece vibrates seriously during high-speed turning; for a workpiece with a mass center not on an axis, a center hole is easy to tear due to the existence of centrifugal force during high-speed turning, and the workpiece is damaged.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a turning holder for maintaining turning accuracy and turning efficiency when turning an elongated shaft workpiece.
The invention provides a cutting retainer for a lathe, which comprises: the chuck assembly is used for fixing a workpiece to be turned; and a fixing device, a head of the fixing device is connected with the chuck assembly and used for fixing the chuck assembly, wherein the fixing device comprises: a housing, the housing being hollow; and the rotating mechanism is arranged in the hollow cavity of the shell and is fixedly connected with the chuck assembly.
The turning holder for a lathe according to the present invention may further include: the core shaft is used as a rotor of the rotating mechanism and is provided with a through hole through which the workpiece to be turned passes; the bearing is arranged between the mandrel and the inner wall of the shell; and the retainer ring is used for fixing the rotating mechanism on the shell.
The turning retainer for the lathe provided by the invention can also be characterized in that the mandrel and the workpiece to be turned are relatively fixed in position and can rotate relative to the shell.
The turning retainer for the lathe provided by the invention can be further characterized in that a shaft shoulder for mounting a bearing is arranged on the mandrel.
The turning retainer for the lathe provided by the invention can also have the characteristic that a conical inner cavity and a pipe thread which are combined and connected with the chuck are arranged on the end surface of the mandrel.
The turning retainer for the lathe provided by the invention can also have the characteristic that the bearing is a deep groove ball bearing.
The turning retainer for the lathe provided by the invention can also have the characteristic that the precision grade of the deep groove bearing is P5.
The turning retainer for the lathe provided by the invention can also be characterized in that the tail part of the shell is of a conical structure, and the conical degree of the conical structure is matched with the tail frame of the machine tool.
The turning retainer for the lathe provided by the invention can also be characterized in that the chuck combination is hollow inside and is used for penetrating through the workpiece to be turned.
The turning retainer for the lathe provided by the invention can also be characterized in that the chuck combination is internally provided with an internal thread matched with the pipe thread.
Advantageous effects
Compared with a conventional centre retainer, the turning retainer for the lathe, provided by the invention, has the advantages that the interface is matched with an ordinary lathe and a numerical control lathe, the turning rigidity of a workpiece to be turned, especially a slender shaft, can be greatly improved, and the slender shaft instability caused by overlarge acting force of the centre is avoided; the turning precision and the turning efficiency can be effectively ensured.
Drawings
FIG. 1 is a cross-sectional view of a turning holder for a lathe according to the present invention;
FIG. 2 is a schematic view of the turning holder for a lathe according to the present invention;
FIG. 3 is a schematic structural diagram of a prior art turning process of an elongated shaft.
Detailed Description
The present invention is further described in detail with reference to the drawings and examples, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functional, methodological, or structural equivalents of these embodiments or substitutions may be included in the scope of the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "central", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only used for convenience in describing and simplifying the description of the present invention, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1, the present embodiment provides a turning cage for a lathe, which comprises a collet assembly 1 and a fixing device 2. The chuck assembly 1 is used for fixing a workpiece to be turned. The chuck assembly 1 is hollow inside and is used for penetrating through the workpiece to be turned. The head of the fixing device 2 is connected with the chuck assembly 1 and is used for connecting the chuck assembly 1 with a lathe tailstock.
The fixture 2 includes a housing 21 and a rotation mechanism 22. The shell 21 is hollow and ensures the workpiece to be turned to pass through, and the shell 21 is used for fixing the turning retainer for the lathe on a lathe tailstock. The tail of the shell 21 is of a conical structure, and the taper is matched with a tail frame of a lathe.
The rotating mechanism 22 is arranged in the hollow cavity of the housing 21, and the rotating mechanism 22 is fixedly connected with the chuck assembly 1 at the same time. Rotary mechanism 22 includes spindle 221, bearing 222, and retainer ring 223.
The mandrel 221 serves as a rotor of the rotating mechanism 22 and is provided with a through hole through which the workpiece to be turned passes. The mandrel 221 is fixed relative to the workpiece to be turned and can rotate relative to the housing 21. The spindle 221 is provided with a shoulder for mounting a bearing. The end surface of the mandrel 221 is provided with a conical inner cavity and a pipe thread which are connected with the chuck assembly 1.
The bearing 222 is installed between the spindle 221 and the inner wall of the housing 21. The retainer ring 223 is used to fix the rotation mechanism 22 to the housing 21, and prevents the rotation mechanism 22 from moving in the axial direction.
The working process is as follows: as shown in fig. 2, in the present embodiment, an elongated shaft workpiece is taken as an example of a workpiece to be turned. According to the outer diameter of a workpiece, selecting a corresponding chuck combination, installing the chuck combination 1 at the front end of a mandrel 221, clamping the slender shaft workpiece on a lathe, adjusting the distance between a tail frame of the lathe and the end surface of a main shaft of the lathe to enable the distance between the end surface of the main shaft of the lathe and the end surface of the chuck combination 1 to be 100mm-150mm, enabling the distance to guarantee the clamping rigidity and the machining precision of the slender shaft workpiece, locking the chuck combination 1, and starting to machine the slender shaft workpiece by an external turning tool. After the processing is finished, moving the lathe tail frame backwards, reserving a processing interval of 100mm-150mm again, and circulating the processing process until the processing of the whole slender shaft is finished.
Compared with a conventional centre retainer, the turning retainer for the lathe, provided by the embodiment, has the advantages that the interface is matched with an ordinary lathe and a numerical control lathe, so that the turning rigidity of a workpiece to be turned, especially a slender shaft, can be greatly improved, and the slender shaft instability caused by overlarge acting force of the centre is avoided; the turning precision and the turning efficiency can be effectively ensured. The inner cavity of the mandrel 221 is arranged, so that the workpiece can be machined one section at a time, and the problem that the workpiece is not fixed well due to the fact that the workpiece is too long and only one section of the workpiece can be fixed in the existing structure is solved.
In another embodiment of the present invention, the bearing 222 is a deep groove ball bearing. The accuracy rating of the deep groove bearing is P5.
In the present embodiment, the bearing 222 installed between the spindle 221 and the inner wall of the housing 21 is selected from a deep groove ball bearing. The deep groove ball bearing is used for radial support between two parts which rotate relatively and can bear certain axial load. In this embodiment, a deep groove ball bearing is used, so that the axial play can be eliminated, and the smooth rotation of the spindle 221 can be further improved. And the deep groove ball bearing with the precision grade of P5 is used, so that the smooth support for the workpiece is ensured.
In another embodiment of the invention, the chuck assembly 1 is provided with an internal thread matching with the pipe thread.
In this embodiment, the internal thread formed in the collet assembly 1 may make the fixation of the collet assembly 1 to the mandrel 221 more stable and stable.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A turning holder for a lathe, comprising:
the chuck assembly is used for fixing a workpiece to be turned; and
the head of the fixing device is connected with the chuck assembly and used for fixing the chuck assembly,
wherein the content of the first and second substances,
the fixing device includes:
a housing, the housing being hollow; and
and the rotating mechanism is arranged in the hollow cavity of the shell and is fixedly connected with the chuck assembly.
2. The turning holder for lathe according to claim 1, wherein the rotation mechanism comprises:
the core shaft is used as a rotor of the rotating mechanism and is provided with a through hole through which the workpiece to be turned passes;
the bearing is arranged between the mandrel and the inner wall of the shell;
and the retainer ring is used for fixing the rotating mechanism on the shell.
3. The turning holder for a lathe of claim 2, wherein the spindle is fixed in position relative to the workpiece to be turned and rotatable relative to the housing.
4. The turning holder for a lathe according to claim 2, wherein a shoulder for mounting a bearing is provided on the spindle.
5. The turning holder for a lathe according to claim 2, wherein the end surface of the core shaft is provided with a tapered cavity and a pipe thread which are connected to the collet in combination.
6. The turning cage for a lathe of claim 2, wherein the bearing is a deep groove ball bearing.
7. The turning holder for lathes according to claim 6, wherein the precision grade of the deep groove bearing is P5.
8. The turning holder for lathe as claimed in claim 1, wherein the tail of the housing is a tapered structure, the taper of the tapered structure matching the tail of the machine tool.
9. The turning holder for lathes according to claim 5, wherein the collet assembly is hollow inside for passing through the workpiece to be turned.
10. The turning holder for lathes according to claim 9, wherein the collet assembly has internal threads that mate with the threads of the tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010563353.8A CN111673098A (en) | 2020-06-19 | 2020-06-19 | Turning retainer for lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010563353.8A CN111673098A (en) | 2020-06-19 | 2020-06-19 | Turning retainer for lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111673098A true CN111673098A (en) | 2020-09-18 |
Family
ID=72436660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010563353.8A Pending CN111673098A (en) | 2020-06-19 | 2020-06-19 | Turning retainer for lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111673098A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD246262A1 (en) * | 1986-01-10 | 1987-06-03 | Liebknecht Transformat | INTERNAL CLOSING DEVICE FOR HOLDING DIFFERENT HOLLOWS |
| CN205587973U (en) * | 2016-04-25 | 2016-09-21 | 湖州石渔涧模具有限公司 | Turning frock of slender axles |
| CN206083873U (en) * | 2016-10-20 | 2017-04-12 | 四川明日宇航工业有限责任公司 | A reverse slewer for processing of spring steel elongate rod spare |
| CN207309496U (en) * | 2017-09-06 | 2018-05-04 | 国营芜湖机械厂 | A kind of grip device for slender axles accessory turning |
| CN108296498A (en) * | 2018-03-20 | 2018-07-20 | 茂名市高级技工学校 | A kind of tail stock auxiliary clamp device applied to turning elongated shaft |
| CN208276186U (en) * | 2018-05-23 | 2018-12-25 | 成都飞机工业（集团）有限责任公司 | A kind of slender rod type part fixture for processing |
| CN110449933A (en) * | 2019-09-09 | 2019-11-15 | 浙江洋铭工贸有限公司 | A kind of numerically-controlled machine tool clamping device special |
-
2020
- 2020-06-19 CN CN202010563353.8A patent/CN111673098A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD246262A1 (en) * | 1986-01-10 | 1987-06-03 | Liebknecht Transformat | INTERNAL CLOSING DEVICE FOR HOLDING DIFFERENT HOLLOWS |
| CN205587973U (en) * | 2016-04-25 | 2016-09-21 | 湖州石渔涧模具有限公司 | Turning frock of slender axles |
| CN206083873U (en) * | 2016-10-20 | 2017-04-12 | 四川明日宇航工业有限责任公司 | A reverse slewer for processing of spring steel elongate rod spare |
| CN207309496U (en) * | 2017-09-06 | 2018-05-04 | 国营芜湖机械厂 | A kind of grip device for slender axles accessory turning |
| CN108296498A (en) * | 2018-03-20 | 2018-07-20 | 茂名市高级技工学校 | A kind of tail stock auxiliary clamp device applied to turning elongated shaft |
| CN208276186U (en) * | 2018-05-23 | 2018-12-25 | 成都飞机工业（集团）有限责任公司 | A kind of slender rod type part fixture for processing |
| CN110449933A (en) * | 2019-09-09 | 2019-11-15 | 浙江洋铭工贸有限公司 | A kind of numerically-controlled machine tool clamping device special |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200918 |
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| RJ01 | Rejection of invention patent application after publication |