CN209902719U - Fixture for fixing square eccentric part of lathe - Google Patents
Fixture for fixing square eccentric part of lathe Download PDFInfo
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- CN209902719U CN209902719U CN201920707168.4U CN201920707168U CN209902719U CN 209902719 U CN209902719 U CN 209902719U CN 201920707168 U CN201920707168 U CN 201920707168U CN 209902719 U CN209902719 U CN 209902719U
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Abstract
The utility model discloses an anchor clamps for fixed square eccentric of lathe, include: the clamp comprises a circular base plate, two reference fasteners, two movable fasteners and two wedge-shaped fasteners, wherein the circular base plate is provided with two T-shaped grooves which are perpendicular to each other and pass through the circle center of the circular base plate; the bottoms of the reference fastener and the movable fastener are connected with a T-shaped block matched with the T-shaped groove through bolts; the movable fastening piece is provided with an inclined plane matched with the wedge-shaped fastening piece. Therefore, the clamp for fixing the square eccentric part of the lathe can conveniently, quickly and accurately position the square eccentric workpiece; by adopting the wedge-shaped fastener, the workpiece to be machined can be easily fastened with high strength without being pressed by a lathe thimble, so that the positioning and clamping time is reduced, and the machining efficiency is improved.
Description
Technical Field
The utility model relates to a turning attachment field especially relates to an anchor clamps that is used for fixed square eccentric member of lathe.
Background
In the machining process, the situation of machining a round hole on a square workpiece is often encountered, if the round hole is in the center of the square workpiece, the round hole is directly machined after being clamped by a traditional lathe fixture, but if the round hole to be machined is an eccentric circle and is not in the center position of the square workpiece, the round hole to be machined is directly clamped by the traditional lathe fixture, and the circle center to be machined and the machining axis of a lathe are not on the same axis and cannot be machined.
The application number is 201420033007.9's chinese patent, provides an anchor clamps for centre gripping square workpiece, including three-jaw chuck, jack catch seat, chuck spanner seat, a bottom surface is planar middle jack catch is connected to the jack catch seat of higher authority, and two jack catch seats below connect a clamping face respectively for the right angled jack catch about, the round hole center and the chuck center coincidence of work piece. The square workpiece is clamped on the lathe through the left right-angle-shaped clamping jaw and the middle clamping jaw with the plane bottom surface, the center of a round hole to be machined is coincided with the center of a chuck, the machining of an eccentric hole (or a non-eccentric hole) on the square workpiece is completed through one-time clamping without converting other lathes, but the problems exist that the clamping jaw for fixing the workpiece is fixed on a clamping jaw seat of a three-jaw chuck, three clamping jaws can act simultaneously according to the design principle of the three-jaw chuck, and the clamp is fixedly installed on the lathe and generally placed in a vertical state, therefore, the circle center of the eccentric hole on the workpiece is aligned with the center of the chuck, the deviation of the size of the square workpiece is considered, the circle center of the eccentric hole is aligned with the center of the chuck by online adjustment every time, and the working difficulty of workers is greatly increased.
The Chinese patent with the application number of 201220743725.6 provides a lathe turning centering fixture, which comprises a circular clamping plate, wherein four square holes are formed in two mutually perpendicular diameter lines of the clamping plate, and a screw rod is further arranged in each square hole and is fixed through a nut; the diameter of the screw is matched with the width of the square hole. Through the adjustment of the positions of the screw rod and the nut, the lathe chuck can adapt to workpieces with different sizes, the function of turning an eccentric circle is realized, and the work of frequently mounting and dismounting the lathe chuck is reduced. There are the following problems: the clamping force of the screw and the nut to the workpiece is only used for fastening the workpiece, the clamping force depends on the physical strength of workers, so that the workpiece can only be positioned, the workpiece can be really fastened only by pressing the workpiece through the ejector pin of the lathe, and the clamping device cannot be applied to the workpiece which cannot be pressed through the ejector pin.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: how to quickly position and fix a square eccentric workpiece.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a clamp for fixing a square eccentric for a lathe, comprising: a circular base plate, two datum fasteners, two movable fasteners, two wedge fasteners, wherein,
the circular bottom plate is provided with two T-shaped grooves which are perpendicular to each other and pass through the circle center of the circular bottom plate;
the bottoms of the reference fastener and the movable fastener are provided with bulges matched with the T-shaped groove, and the T-shaped blocks matched with the T-shaped groove are connected through bolts;
the movable fastening piece is provided with an inclined plane matched with the wedge-shaped fastening piece.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Preferably, the height of the wedge-shaped fastener is smaller than the height of the movable fastener.
Preferably, the height of the reference fastener, the height of the movable fastener and the height of the wedge-shaped fastener are smaller than the height of a workpiece to be machined.
Compared with the prior art, the utility model discloses following technological effect has:
1. because the plurality of fasteners can not act simultaneously, the square eccentric workpiece can be conveniently, quickly and accurately positioned;
2. by adopting the wedge-shaped fastener, the workpiece to be machined can be easily fastened with high strength without being pressed by a lathe thimble, so that the positioning and clamping time is reduced, and the machining efficiency is improved.
Drawings
FIG. 1 is a schematic top view of a fixture for fixing a square eccentric member of a lathe according to the present invention;
FIG. 2 is a schematic front view of the fixture for fixing a square eccentric member of a lathe according to the present invention;
FIG. 3 is a schematic view of the clamp for fixing the square eccentric member of the lathe according to the present invention;
in the drawings, the parts names represented by the respective reference numerals are listed as follows:
1. a reference fastener;
2. a movable fastener;
3. a wedge fastener;
4. a circular base plate;
5. a bolt;
6. a T-shaped block;
7. a T-shaped groove;
8. and (5) processing the workpiece.
Note that there are a total of 10 bolts, only one of which is labeled.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Referring to fig. 1 to 3, the jig for fixing the eccentric square member of the lathe includes: a circular base plate 4, two reference fasteners 1, two loose fasteners 2, two wedge fasteners 3, wherein,
two T-shaped grooves 7 which are perpendicular to each other and pass through the circle center of the circular bottom plate 4 are arranged on the circular bottom plate 4;
the bottoms of the reference fastening piece 1 and the movable fastening piece 2 are provided with bulges matched with the T-shaped groove 7 and embedded in the upper end of the T-shaped groove 7, so that the reference fastening piece 1 and the movable fastening piece 2 are prevented from rotating to influence the fastening effect; the reference fastener 1 and the movable fastener 2 are connected with a T-shaped block 6 which is arranged in a T-shaped groove 7 through a bolt 5 and is matched with the T-shaped groove 7; the reference fastener 1 and the movable fastener 2 can be firmly fixed on the T-shaped groove 7 by tightening the bolt 5.
The movable fastening piece 2 is provided with an inclined surface matched with the wedge-shaped fastening piece 3.
Preferably, the height of the wedge-shaped fastener 3 is smaller than the height of the movable fastener 2.
Preferably, the height of the reference fastener 1, the height of the movable fastener 2 and the height of the wedge-shaped fastener 3 are smaller than the height of the workpiece 8 to be machined.
When in use, the utility model is used,
firstly, fixing a circular bottom plate 4 by using a three-jaw chuck of a lathe;
secondly, aligning the two datum fasteners 1 according to the eccentric size of the workpiece to be machined, screwing the bolts 5, and fixing the two datum fasteners 1 in the T-shaped grooves 7, thereby completing datum plane positioning of the workpiece 8 to be machined;
thirdly, enabling 2 movable fasteners 2 to be close to a workpiece 8 to be machined, fixing a tightening bolt 5 in a T-shaped groove 7, enabling the inclined surface of a wedge-shaped fastener 3 to be attached and aligned with the inclined surface of the movable fastener 2, and then pressing down the wedge-shaped fastener 3 by using the rotary bolt 5 and the force of the bolt 5 to achieve the purpose of fixing the workpiece 8 to be machined;
the clamp for fixing the square eccentric part of the lathe can conveniently, quickly and accurately position the square eccentric workpiece; by adopting the wedge-shaped fastener, the workpiece to be machined can be easily fastened with high strength without being pressed by a lathe thimble, so that the positioning and clamping time is reduced, and the machining efficiency is improved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (3)
1. A clamp for fixing a square eccentric for a lathe, comprising: a circular base plate, two datum fasteners, two movable fasteners, two wedge fasteners, wherein,
the circular bottom plate is provided with two T-shaped grooves which are perpendicular to each other and pass through the circle center of the circular bottom plate;
the bottoms of the reference fastener and the movable fastener are provided with bulges matched with the T-shaped groove, and the T-shaped blocks matched with the T-shaped groove are connected through bolts;
the movable fastening piece is provided with an inclined plane matched with the wedge-shaped fastening piece.
2. The clamp for fixing a square eccentric of a lathe according to claim 1, wherein the height of the wedge-shaped fastener is smaller than the height of the movable fastener.
3. The clamp for fixing the eccentric square member of the lathe according to claim 1 or 2, wherein the height of the reference fastener, the height of the movable fastener, and the height of the wedge-shaped fastener are smaller than the height of the workpiece to be machined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920707168.4U CN209902719U (en) | 2019-05-17 | 2019-05-17 | Fixture for fixing square eccentric part of lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920707168.4U CN209902719U (en) | 2019-05-17 | 2019-05-17 | Fixture for fixing square eccentric part of lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209902719U true CN209902719U (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920707168.4U Active CN209902719U (en) | 2019-05-17 | 2019-05-17 | Fixture for fixing square eccentric part of lathe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112659069A (en) * | 2020-12-28 | 2021-04-16 | 齐重数控装备股份有限公司 | Novel automatic alignment centering of square workpiece device |
| CN114227410A (en) * | 2021-12-22 | 2022-03-25 | 重庆齿轮箱有限责任公司 | Inner hole grinding machine-based cycloidal gear eccentric hole machining tool and machining method |
-
2019
- 2019-05-17 CN CN201920707168.4U patent/CN209902719U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112659069A (en) * | 2020-12-28 | 2021-04-16 | 齐重数控装备股份有限公司 | Novel automatic alignment centering of square workpiece device |
| CN114227410A (en) * | 2021-12-22 | 2022-03-25 | 重庆齿轮箱有限责任公司 | Inner hole grinding machine-based cycloidal gear eccentric hole machining tool and machining method |
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