CN113927056B - Positioning device for machining eccentric workpiece - Google Patents
Positioning device for machining eccentric workpiece Download PDFInfo
- Publication number
- CN113927056B CN113927056B CN202111057126.9A CN202111057126A CN113927056B CN 113927056 B CN113927056 B CN 113927056B CN 202111057126 A CN202111057126 A CN 202111057126A CN 113927056 B CN113927056 B CN 113927056B
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- China
- Prior art keywords
- key
- disc
- positioning
- eccentric
- positioning core
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- 238000003754 machining Methods 0.000 title claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 21
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 8
- 210000000078 claw Anatomy 0.000 description 14
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/103—Retention by pivotal elements, e.g. catches, pawls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention discloses a positioning device for machining eccentric workpieces, which comprises: chuck, adapter plate, positioning core plate and pressing plate; the switching disc is arranged on the chuck; the positioning core disc is detachably arranged on the adapter disc and used for bearing the eccentric workpiece, and the eccentricity of the eccentric workpiece is adjusted by adjusting the positioning core disc; after the eccentricity is determined, the eccentric workpiece is fixed on the positioning core disc through the pressing plate. The positioning device has the advantages of convenience in use, rapidness in positioning and high processing efficiency; meanwhile, the positioning device has universality, and not only can replace the positioning core disc to process eccentric workpieces with different diameters; the eccentricity is also adjusted on the adapter plate by positioning the core plate.
Description
Technical Field
The invention belongs to the technical field of eccentric workpiece machining, and particularly relates to a positioning device for machining an eccentric workpiece on a lathe.
Background
When an eccentric workpiece is machined on a lathe, measures are mostly taken in clamping, namely, the axis of the eccentric part to be machined is aligned to coincide with the rotation axis of a lathe spindle. The prior art methods generally employ scribing, shimming, eccentric chuck methods, and the like. The scribing method is to align according to the scribed eccentric circle, but scribing errors and alignment errors exist; the gasket adding method is to add a gasket on one claw in the three-claw self-centering chuck, but the method is only suitable for processing eccentric workpieces with shorter length, smaller eccentricity and low precision requirement; the eccentric chuck method is only suitable for machining eccentric workpieces such as short shafts, discs and sleeves.
The inventor finds that when the eccentric parts are positioned, the eccentric workpieces with high precision cannot be machined due to inaccurate positioning, and the eccentric workpieces with different diameters cannot be machined due to low machining efficiency.
Accordingly, there is a need to develop a positioning device for machining eccentric workpieces that overcomes the above-described drawbacks.
Disclosure of Invention
The invention provides a positioning device for processing an eccentric workpiece, which is used for at least solving the technical problems of difficult processing and low efficiency of the eccentric workpiece caused by inaccurate positioning of an eccentric part.
The positioning device of the present invention comprises: chuck, adapter plate, positioning core plate and pressing plate; the switching disc is arranged on the chuck; the positioning core disc is detachably arranged on the adapter disc and used for bearing an eccentric workpiece, and the eccentricity of the eccentric workpiece is adjusted by adjusting the positioning core disc; after the eccentricity is determined by the pressing plate, the eccentric workpiece is fixed on the positioning core disc through the pressing plate.
The positioning device is characterized in that at least one claw part is arranged on the chuck, and the adapter plate is fixed through the claw part.
The positioning device comprises a first connecting assembly, a first key groove, a second key groove, a positioning core disc and a spindle rotating central axis, wherein the first key groove is formed in the adapter disc in parallel, the first connecting assembly is connected with the first key groove to fix the positioning core disc on the adapter disc, the first connecting assembly is loosened, and the positioning core disc can move along the direction of the first key groove to adjust the distance between the positioning core disc and the spindle rotating central axis.
The positioning device comprises a first connecting assembly and a second connecting assembly, wherein each first connecting assembly comprises a first key and a screw, the first key is arranged in the first key groove, and the screw penetrates through the positioning core disc to be connected with the first key.
The positioning device comprises a rotary disc, wherein the rotary disc is provided with two second key grooves which are arranged in parallel, and the second key grooves and the pressing plate are connected through a second connecting assembly to fix the eccentric workpiece.
The positioning device, wherein each second connecting assembly comprises:
A second key disposed in the second key groove;
and one end of the connecting column is connected with the second key, and the other end of the connecting column is connected with the pressing plate.
The positioning device is characterized in that the pressing plate is provided with an open slot, and the other end of the connecting column is connected with the open slot through a nut.
The positioning device comprises a chuck, a plurality of clamping heads and a plurality of clamping heads, wherein the clamping heads are arranged on the chuck, and the clamping heads are arranged on the clamping heads.
The positioning device is characterized in that the first key groove is a T-shaped groove, and the first key is a T-shaped key.
The positioning device is characterized in that the second key groove is a T-shaped groove, and the second key is a T-shaped key.
Compared with the prior art, the positioning device has the advantages that the technical problems of difficult processing and low efficiency of the existing eccentric workpiece are solved on the basis of processing the eccentric workpiece, and meanwhile, the positioning core disc can be used for adjusting the distance between the T-shaped groove of the rotating disc and the rotation center of the lathe in a sliding manner, so that eccentric workpieces with different eccentricities can be processed, and eccentric workpieces with different diameters can be processed by replacing the positioning core disc with different diameters.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a side view of a positioning device installation of the present invention;
FIG. 2 is a top plan view of the positioning device of the present invention;
fig. 3 is a schematic view of a positioning device of the present invention in a sectional view.
Wherein, the reference numerals:
a chuck: 11;
and (2) base: 111;
Claw: 112;
A switching disc: 12;
First keyway: 121;
Second keyway: 122, a step of;
Positioning a core disc: 13;
And (3) pressing plates: 14;
Open slot: 141;
A first connection assembly: 15;
A first key: 151;
Screw: 152;
A second connection assembly: 16;
A second bond: 161;
connection column: 162;
eccentric work piece: 2;
lathe spindle: 3, a step of;
a rotation central axis: l is;
and (3) fastening a nut: n1;
And (3) a nut: n2;
Gasket: w.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The exemplary embodiments of the present invention and the descriptions thereof are intended to illustrate the present invention, but not to limit the present invention. In addition, the same or similar reference numerals are used for the same or similar parts in the drawings and the embodiments.
The terms "first," "second," "S1," "S2," …, etc. as used herein do not denote a particular order or sequence, nor are they intended to limit the invention, but rather are merely intended to distinguish one element or operation from another in the same technical terms.
With respect to directional terms used herein, for example: upper, lower, left, right, front or rear, etc., are merely references to the directions of the drawings. Thus, directional terminology is used for purposes of illustration and is not intended to be limiting.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.
As used herein, "and/or" includes any or all combinations of such things.
Reference herein to "a plurality" includes "two" and "more than two"; the term "plurality of sets" as used herein includes "two sets" and "more than two sets".
Certain words used to describe the application will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the application.
The eccentric workpiece is a workpiece with the axes of the outer circle and the outer circle or the axes of the inner hole and the outer circle parallel but not coincident (offset a certain distance from each other), the workpiece with the outer circle eccentric with the outer circle is an eccentric shaft, the workpiece with the inner hole eccentric with the outer circle is an eccentric sleeve, and the distance between the two parallel axes is an eccentric distance.
Referring to fig. 1-3, fig. 1 is a side view of a positioning device according to the present invention; FIG. 2 is a top plan view of the positioning device of the present invention; fig. 3 is a schematic view of a positioning device of the present invention in a sectional view. As shown in fig. 1 to 3, a positioning device for machining an eccentric workpiece of the present invention includes: chuck 11, transfer plate 12, positioning core plate 13 and pressing plate 14; the adapter plate 12 is arranged on the chuck 11; the positioning core disc 13 is detachably arranged on the adapter disc 12 and used for bearing the eccentric workpiece 2, and the eccentricity of the eccentric workpiece 3 is adjusted by adjusting the positioning core disc 13; after the eccentricity is determined, the eccentric workpiece 2 is fixed on the positioning core plate 13 through the pressing plate 14.
The positioning device can easily correct the axis of the eccentric circle part to the position overlapped with the axis of the lathe spindle during processing, so that the positioning device is simple in clamping, easy to align, not easy to generate errors, suitable for eccentric workpieces with high processing precision and identical eccentric distance, and suitable for mass production.
Further, the chuck 11 includes a base 111 and at least one claw portion 112, the at least one claw portion 112 is disposed on the base 111, and the adaptor plate 12 is fixed by the claw portion 111. In this embodiment, the number of the claw portions 112 is four, and the claw portions are disposed on the base 111 in a cross shape.
In the present embodiment, the number of the claw portions 112 is four, but the present invention is not limited to the number of the claw portions, and may be increased or decreased according to the use requirement.
Wherein at least one step is provided on each jaw 112 so that the jaw 112 can be adapted to adaptor plates 12 of different diameters.
In the present embodiment, the base 111 and the claw portion 112 are configured as separate components, and in other embodiments, the base 111 and the claw portion 112 may be configured as a single component.
Still further, two first keyways 121 disposed in parallel are provided on the adapter plate 12, and the first keyways 121 are connected through the first connecting component 15 to fix the positioning core plate 13 on the adapter plate 12, and the first connecting component 15 is loosened, and the positioning core plate 13 can move along the direction of the first keyways 121 to adjust the distance from the rotation central axis of the spindle, so that the accuracy of the parallelism and the eccentricity of the axis can be controlled more easily.
In this embodiment, two first keyways 121 disposed in parallel are formed on the adapter plate 12, the positioning device includes two first connecting assemblies 15, the two first connecting assemblies 15 are connected to the two first keyways 121 in a one-to-one correspondence manner, each first connecting assembly 15 includes a first key 151 and a screw 152, the first key 151 is disposed in the first keyways 121, and one end of the screw 152 passes through the positioning core plate 13 and is connected to the first key 151.
Specifically, after the positioning core plate 13 fixed on the adapter plate 12 is loosened by the screw 152, the positioning core plate 13 can move along the direction of the first key groove 121, so that the distance between the positioning core plate 13 and the rotation central axis L of the lathe spindle 3 can be slidingly adjusted, and the eccentricity of the eccentric workpiece 2 can be adjusted, so that the purpose of processing eccentric workpieces with the same kind of diameter can be achieved. Meanwhile, in the embodiment, the positioning core plate 13 is arranged in a detachable structure, so that the positioning core plate 13 with different diameters can be replaced, and the purpose of processing eccentric workpieces with different diameters is achieved.
Still further, two parallel second keyways 122 are formed on the adapter plate 12, and the second keyways 122 and the pressing plate 14 are connected by the second connecting assembly 16 to fix the eccentric workpiece 2.
In this embodiment, two second keyways 122 are formed on the adapter plate 12 and disposed in parallel, and two first keyways 121 are located between the two second keyways 122, where in this embodiment, the first keyways 121 may be disposed in parallel with the second keyways 122, the positioning device includes two second connection assemblies 16, the two second connection assemblies 16 are connected to the two second keyways 122 in a one-to-one correspondence, and each second connection assembly 16 includes: a second key 161 and a connecting post 162; a second key 161 is disposed in the second keyway 122; one end of the connection post 162 is connected to the second key 161, and the other end of the connection post 162 is connected to the pressing plate 14 through a nut N2 and a washer W.
In this embodiment, one end of the connecting post 162 is connected to the second key 161 and is fixed by a fastening nut N1.
Further, the pressing plate 14 is provided with an opening slot 141, and the other end of the connecting post 162 is connected to the opening slot 141 through a nut N2.
Specifically, in this embodiment, as shown in fig. 2, an open slot 141 is formed in the pressing plate 14, and one of the two connecting posts is connected to the open slot 141 through a nut N2 and a washer W, so that the eccentric workpiece 2 can be rapidly clamped and loosened, and the clamping of the eccentric workpiece is simpler and is easy to operate.
In one embodiment of the present invention, the first key groove 121 is a T-shaped groove, and the first key is a T-shaped key 151.
In one embodiment of the present invention, the second key groove 122 is a T-shaped groove, and the second key 161 is a T-shaped key.
In an embodiment of the present invention, at least one of the adaptor plate 12, the positioning core plate 13 and the chuck 11 is made of metal.
The following is a specific description of the design, processing, assembly and use of the positioning device according to the present invention, in conjunction with specific embodiments:
Firstly, turning a changeover panel 12 with moderate size, and processing a T-shaped groove on the changeover panel 12;
secondly, fixing the adapter plate 2 on the four claw parts 112, and aligning and clamping;
thirdly, machining a positioning core disc 13 according to the positioning size of the eccentric workpiece 2;
fourthly, calculating the eccentricity, and fixing the positioning core disc 13 on the adapter disc 12 through the connection of the hexagonal screw 152 and the T-shaped key 151;
fifthly, after the eccentric workpiece 2 is positioned through the positioning core disc 13, the eccentric workpiece is fixed on the positioning core disc 13 through a pressing plate 14, a nut N2 and a gasket W;
And sixthly, adjusting parameters, and processing by a lathe.
In conclusion, the positioning device for machining the eccentric workpiece is designed by utilizing the machining technology and theoretical knowledge, and has the advantages of convenience in use, rapidness in positioning and high machining efficiency; meanwhile, the positioning device has universality, and not only can replace the positioning core disc to process eccentric workpieces with different diameters; the eccentricity is also adjusted on the adapter plate by positioning the core plate.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A positioning device for machining an eccentric workpiece, comprising:
A chuck;
the adapter plate is arranged on the chuck, and two first key grooves which are arranged in parallel are formed in the adapter plate;
The positioning core disc is detachably arranged on the adapter disc and used for bearing an eccentric workpiece, and the eccentricity of the eccentric workpiece is adjusted by adjusting the positioning core disc;
the pressing plate is used for fixing the eccentric workpiece on the positioning core disc through the pressing plate after the eccentricity is determined;
the two first connecting assemblies are connected with the first key groove through the first connecting assemblies to fix the positioning core disc on the rotating disc, the two first connecting assemblies are loosened, the positioning core disc can move along the direction of the first key groove to adjust the distance between the positioning core disc and the rotating central axis of the spindle, the outer edge of the positioning core disc is abutted against the inner side surface of the eccentric workpiece, the lower surface of the positioning core disc is abutted against the upper surface of the rotating disc, the positioning core disc can rotate on the upper surface of the rotating disc by taking one first connecting assembly as an axis, and the rotating of the positioning core disc drives the eccentric workpiece to rotate so as to correct the axis of the eccentric round part of the eccentric workpiece to a position coincident with the axis of the spindle;
each first connecting assembly comprises a first key and a screw, the first key is arranged in the first key groove, the screw penetrates through the positioning core disc to be connected with the first key, two second key grooves which are arranged in parallel are formed in the rotating disc, and the second key grooves and the pressing plate are connected through the second connecting assemblies so as to fix the eccentric workpiece;
each of the second connection assemblies includes: a second key disposed in the second key groove;
A connecting column, one end of which is connected to the second key, and the other end of which is connected to the pressing plate; an open slot is formed in the pressing plate, and the other end of the connecting column is connected with the open slot through a nut.
2. The positioning device of claim 1 wherein said chuck is provided with at least one jaw portion by which said adapter plate is secured.
3. The positioning device of claim 2 wherein said chuck further comprises a base, said four jaws being disposed on said base in a cross-like configuration.
4. A positioning device as set forth in claim 3 wherein said first key slot is a T-shaped slot and said first key is a T-shaped key.
5. The positioning device of claim 1 wherein said second keyway is a T-shaped slot and said second key is a T-shaped key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111057126.9A CN113927056B (en) | 2021-09-09 | 2021-09-09 | Positioning device for machining eccentric workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111057126.9A CN113927056B (en) | 2021-09-09 | 2021-09-09 | Positioning device for machining eccentric workpiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113927056A CN113927056A (en) | 2022-01-14 |
| CN113927056B true CN113927056B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111057126.9A Active CN113927056B (en) | 2021-09-09 | 2021-09-09 | Positioning device for machining eccentric workpiece |
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| CN (1) | CN113927056B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003136313A (en) * | 2001-11-02 | 2003-05-14 | Mitsubishi Electric Corp | Chuck jig for eccentric machining |
| CN103273353A (en) * | 2013-05-10 | 2013-09-04 | 苏州东方模具科技股份有限公司 | Clamp structure used for eccentricity molding machining of glass mold |
| CN105563152A (en) * | 2014-11-07 | 2016-05-11 | 三峡大学 | Clamp for processing thin-wall bush |
| CN107470943A (en) * | 2017-09-13 | 2017-12-15 | 中原工学院 | A kind of offset flexible jig |
| CN208929788U (en) * | 2018-10-25 | 2019-06-04 | 硕泰机械(浙江)有限公司 | A kind of adjustable eccentric fixture |
| CN209021706U (en) * | 2018-11-21 | 2019-06-25 | 东莞市信迪机械工具有限公司 | A kind of cutter turning lathe |
-
2021
- 2021-09-09 CN CN202111057126.9A patent/CN113927056B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003136313A (en) * | 2001-11-02 | 2003-05-14 | Mitsubishi Electric Corp | Chuck jig for eccentric machining |
| CN103273353A (en) * | 2013-05-10 | 2013-09-04 | 苏州东方模具科技股份有限公司 | Clamp structure used for eccentricity molding machining of glass mold |
| CN105563152A (en) * | 2014-11-07 | 2016-05-11 | 三峡大学 | Clamp for processing thin-wall bush |
| CN107470943A (en) * | 2017-09-13 | 2017-12-15 | 中原工学院 | A kind of offset flexible jig |
| CN208929788U (en) * | 2018-10-25 | 2019-06-04 | 硕泰机械(浙江)有限公司 | A kind of adjustable eccentric fixture |
| CN209021706U (en) * | 2018-11-21 | 2019-06-25 | 东莞市信迪机械工具有限公司 | A kind of cutter turning lathe |
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| Publication number | Publication date |
|---|---|
| CN113927056A (en) | 2022-01-14 |
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