CN217551783U - Combined clamp for machining double-eccentric part - Google Patents
Combined clamp for machining double-eccentric part Download PDFInfo
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- CN217551783U CN217551783U CN202221361289.6U CN202221361289U CN217551783U CN 217551783 U CN217551783 U CN 217551783U CN 202221361289 U CN202221361289 U CN 202221361289U CN 217551783 U CN217551783 U CN 217551783U
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- eccentric
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- anchor clamps
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Abstract
The utility model relates to a modular fixture of two eccentric parts of processing for two eccentric parts of processing, modular fixture includes first eccentric anchor clamps (I), second eccentric anchor clamps (II) and anchor clamps mount (III), and first eccentric anchor clamps (I) are first disc anchor clamps (11) that have first eccentric round hole (12), and second eccentric anchor clamps (II) are second disc anchor clamps (21) that have eccentric circular slot (22) and second eccentric round hole (23). Through the cooperation of first eccentric anchor clamps I and anchor clamps mount III, realize processing the first eccentric wheel of two eccentric parts on ordinary lathe, then through changing anchor clamps, realize processing the second eccentric wheel of two eccentric parts on ordinary lathe to accomplish the processing of two eccentric parts on ordinary lathe. The utility model discloses a modular fixture simple structure, the machining precision is high, and easy to use is applicable to various lathes.
Description
Technical Field
The utility model relates to a modular fixture, in particular to modular fixture who is used for processing two eccentric parts suitable for center lathe.
Background
Parts that can be directly machined using a common lathe are typically coaxial structures. In the prior art, in order to machine eccentric parts, a special clamp is generally required to be designed for each type of eccentric part, so that the machining can be completed on a common lathe.
Tea pluckers are a type of crop harvesting machine that plucks fresh and tender tea leaves from the top tips of tea trees, and the blade part of the tea plucker is generally composed of an upper blade and a lower blade, which are connected to an output shaft of a motor by a shaft member including an upper eccentric wheel and a lower eccentric wheel so that the upper and lower blades can reciprocate in their length directions.
The shaft member including the upper eccentric wheel and the lower eccentric wheel is a double eccentric part, and can be machined by a common lathe only by using a special clamp, but no clamp which can be directly used is available in the prior art.
Disclosure of Invention
The utility model aims at overcoming prior art not enough, providing a modular fixture to containing the axle piece of eccentric wheel and lower eccentric wheel, ensure to accomplish the processing of this type of double eccentric part through center lathe.
To the above-mentioned purpose, the utility model provides a modular fixture of processing double-eccentric part, modular fixture includes first eccentric anchor clamps I, second eccentric anchor clamps II and anchor clamps mount III, its characterized in that:
the first eccentric clamp I is a first disc clamp 11 with a first eccentric round hole 12, and the distance between the first eccentric round hole 12 and the central axis of the first disc clamp 11 is H 1 The eccentric circular hole 12 is provided with an inner convex edge 13, and the circular surface where the inner convex edge 13 is located is coaxial with the eccentric circular hole 12;
the second eccentric clamp II is a second disc clamp 21 with an eccentric circular groove 22 and a second eccentric circular hole 23, and the distance between the eccentric circular groove 22 and the central axis of the second disc clamp 21 is H 3 The second eccentric circular hole 23 is located in the eccentric circular groove 22, and the centers of the second disc clamp 21, the eccentric circular groove 22 and the second eccentric circular hole 23 are in a straight line with an eccentric distance of H 2 Second eccentricity ofThe distance between the central axis of the round hole 23 and the second disc clamp 21 is H 1 And H 3 = H 1 + H 2
The fixture fixing frame III comprises a flange 31 and an adjustable rectangular workpiece fixing plate 36 arranged in the middle of the flange 31, wherein a pair of adjustable longitudinal pressing plates 32 is arranged on the flange 31, a vertical backup plate 33 is fixedly arranged on one side of the workpiece fixing plate 36, and a horizontal backup plate 35 is fixedly arranged on the lower side of the workpiece fixing plate 36.
In the utility model, the double eccentric part has a first eccentricity H 1 And a second eccentricity H 2 。
According to a particularly preferred embodiment, H 2 = H 1 。
According to a particular embodiment, the double eccentric part has a central through tube 41, a first eccentric 42 and a second eccentric 43 located in the middle of the central through tube 41, the first eccentric 42 being located at a central axial distance H from the central through tube 41 1 The distance between the second eccentric wheel 43 and the central axis of the central tube 41 is H 2 。
Preferably, the first eccentric jig I is provided with a pair of jig fixing holes 14 to facilitate clamping.
Similarly, the second eccentric jig II is also provided with a pair of jig fixing holes 24.
The utility model discloses in, set up a pair of spacer block gauge between vertical clamp plate 32 and the work piece fixed plate 36, also set up a pair of spacer block gauge between perpendicular backup plate 33 and the work piece fixed plate 36, these gauge blocks ensure that the interval of vertical clamp plate 32 and work piece fixed plate 36 and the interval of perpendicular backup plate 33 and work piece fixed plate 36 are L 1 。
According to a preferred embodiment, the material of the modular fixture of the present invention is 65Mn.
According to another preferred embodiment, the flange 31 has a T-shaped groove.
Further preferably, the first central groove 15 can be machined on the first eccentric clamp I, and the first central groove 25 can be machined on the second eccentric clamp II, so that the workpiece can be clamped more conveniently.
In the utility model, the hardness of the combined clamp is HRC48-50 degrees.
Through the cooperation of first eccentric anchor clamps I and anchor clamps mount III, realize processing the first eccentric wheel of two eccentric parts on ordinary lathe, then through changing anchor clamps, with the cooperation of second eccentric anchor clamps II and anchor clamps mount III, realize processing the second eccentric wheel of two eccentric parts on ordinary lathe to accomplish the processing of two eccentric parts on ordinary lathe.
The utility model discloses a modular fixture simple structure, the machining precision is high, and easy to use is applicable to various lathes.
Drawings
FIG. 1A is a front view of a double eccentric;
FIG. 1B isbase:Sub>A view taken along the line A-A;
FIG. 2A is a front view of a workpiece at step one;
FIG. 2B is a view from the B-B direction;
FIG. 3A is a front view of a step two workpiece;
FIG. 3B is a view in the direction C-C;
FIG. 4A is a front view of a first eccentric clamp (I);
FIG. 4B is a view from the direction D-D;
FIG. 5 is a front view of the jig mount (III);
FIG. 6 is a front view of the fixture mount (III) (after displacement of the workpiece mounting plate);
FIG. 7 is a front view of a step four clamp mount (III);
fig. 8A is a front view of the second eccentric clamp (II);
FIG. 8B is a view from the direction F-F;
fig. 9 is a front view of the jig mount (III) (after displacement of the workpiece mount plate);
FIG. 10 shows a first eccentric clamp (I) (provided with a first central groove);
fig. 11 shows a second eccentric clamp (II) (provided with a second central groove).
Detailed Description
The invention will be better understood by the following examples.
Example 1
Processing a double-eccentric part as shown in figures 1A and 1B, wherein the part is a shaft of a tea-leaf picker, the middle part is a middle through pipe 41, a first eccentric wheel 42 and a second eccentric wheel 43 are arranged at the middle part of the middle through pipe 41 in the length direction, and the distance between the central axes of the first eccentric wheel 42 and the middle through pipe 41 is H 1 The distance between the second eccentric wheel 43 and the central axis of the central tube 41 is H 2 。
Firstly, a workpiece is added into the workpiece shown in the figures 2A and 2B through a common lathe.
And step two, machining the first eccentric clamp I shown in the figures 4A and 4B.
First eccentric chuck I As shown in FIGS. 4A and 4B, a first eccentric circular hole 12 is formed in the first disk chuck 11, and the distance between the first eccentric circular hole 12 and the central axis of the first disk chuck 11 is H 1 The eccentric round hole 12 is provided with an inner convex edge 13, and the circular surface where the inner convex edge 13 is located is coaxial with the eccentric round hole 12. The inner diameter of the first eccentric circular hole 12 matches the outer diameter of the first eccentric 42.
The first eccentric fixture I is obtained by means of fixture fixing frame III through common lathe machining.
As shown in FIG. 5, the fixture mount III comprises a flange 31 and an adjustable rectangular workpiece fixing plate 36 disposed in the middle of the flange 31, wherein the flange 31 is provided with a pair of adjustable longitudinal pressing plates 32, a vertical backup plate 33 is fixedly mounted on the left side of the workpiece fixing plate 36, a horizontal backup plate 35 is fixedly mounted on the lower side of the workpiece fixing plate 36, and the horizontal backup plate 35 and the workpiece fixing plate 36 are spaced by a spacer, so that the distance between the horizontal backup plate 35 and the workpiece fixing plate 36 and the distance between the vertical backup plate 33 and the workpiece fixing plate 36 are both L 1 。
And step three, adding the workpiece into the workpiece shown in the figures 3A and 3B by means of the cooperation of the first eccentric fixture I and the fixture fixing frame III.
3.1, firstly, processing an outer circle and length on a common lathe;
3.2, processing a pair of clamp fixing holes 14 on a drilling machine;
3.3, installing a fixture fixing frame III on the common vehicle, as shown in fig. 5:
3.3.1, installing the workpiece with the machined excircle and length on a workpiece fixing plate 36, adjusting a longitudinal pressing plate 32 to pre-fix the workpiece on a fixture fixing frame III, aligning and coaxially fixing the excircle of the workpiece and the excircle of the fixture fixing frame III by using a dial gauge, and then fixing;
3.3.2, the vertical backup plate 33 is fastened with the workpiece fixing plate 36 through 2 isolation block gauges 4 and fixed by screws;
3.3.3 the horizontal backup plate 35 is fastened with the workpiece fixing plate 36 through 2 isolation block gauges 4 and fixed by screws, and the length and width of each isolation block gauge are L 1 ；
3.4, the longitudinal pressure plate 32 is released, and the workpiece fixing plate 36 is moved upwards, wherein the workpiece is fixed on the workpiece fixing plate 36, and the moving distance is H 1 . At this time, the horizontal backup plate 35 is spaced apart from the workpiece fixing plate 36 by a distance H 1 + L 1 The distance between the vertical backup plate 33 and the workpiece fixing plate 36 is not changed, and as shown in fig. 6, the screws of the longitudinal pressing plate 32 are tightened again to be fixed;
3.5, processing an eccentric round hole 12 and an inner convex edge 13.
And step four, processing the second eccentric clamp II shown in the figures 8A and 8B.
The second eccentric clamp II has an eccentric circular groove 22 and a second eccentric circular hole 23. The distance between the eccentric circular groove 22 and the central axis of the second disc clamp 21 is H 3 The second eccentric circular hole 23 is located in the eccentric circular groove 22, and the centers of the second disc clamp 21, the eccentric circular groove 22 and the second eccentric circular hole 23 are in a straight line with an eccentric distance of H 2 The distance between the second eccentric round hole 23 and the central axis of the second disc clamp 21 is H 1 And H 3 =H 2 +H 1 。
The inner diameter of the eccentric circular groove 22 is matched with the outer diameter of the second eccentric wheel 43; the inner diameter of the second eccentric round hole 23 is matched with the outer diameter of the middle through pipe 41.
Steps 4.1-4.3.4 are the same as steps 3.1-3.3.4;
4.3.4, the longitudinal pressing plate 32 is released, and the workpiece fixing plate 36 is moved upwards, wherein the workpiece is fixed on the workpiece fixing plate 36, and the moving distance is H 1 . At this time, the horizontal backup plate 35 is spaced apart from the workpiece fixing plate 36 by a distance H 1 + L 1 Of vertical backing plates 33 and workpiece-holding plates 36The screws of the longitudinal pressing plate 32 are screwed again to be fixed when the distance is unchanged;
4.4, processing a second eccentric circular hole 23 according to the size;
4.5, the longitudinal pressure plate 32 is released, and the workpiece fixing plate 36 is moved upwards, wherein the workpiece is fixed on the workpiece fixing plate 36, and the moving distance is H 2 The total distance of the two movements is H 3 . At this time, the distance between the horizontal backup plate 35 and the work fixing plate 36 is H 3 + L 1 When the distance between the vertical backup plate 33 and the workpiece fixing plate 36 is not changed, as shown in fig. 9, the screws of the longitudinal pressing plate 32 are tightened again to fix:
4.6, machining the eccentric circular groove 22 according to the drawing of FIG. 9.
Through the cooperation of first eccentric anchor clamps I and anchor clamps mount III, realize processing the first eccentric wheel of two eccentric parts on ordinary lathe, then through changing anchor clamps, with the cooperation of second eccentric anchor clamps II and anchor clamps mount III, realize processing the second eccentric wheel of two eccentric parts on ordinary lathe to accomplish the processing of two eccentric parts on ordinary lathe.
The utility model discloses a modular fixture simple structure, the machining precision is high, and easy to use is applicable to various lathes.
Claims (10)
1. The modular fixture of two eccentric parts of processing, modular fixture includes first eccentric anchor clamps (I), second eccentric anchor clamps (II) and anchor clamps mount (III), its characterized in that:
the first eccentric clamp (I) is a first disc clamp (11) with a first eccentric round hole (12), and the distance between the first eccentric round hole (12) and the central axis of the first disc clamp (11) is H 1 The eccentric round hole (12) is provided with an inner convex edge (13), and the circular surface where the inner convex edge (13) is located is coaxial with the eccentric round hole (12);
the second eccentric fixture (II) is a second disc fixture (21) with an eccentric circular groove (22) and a second eccentric circular hole (23), and the distance between the eccentric circular groove (22) and the central axis of the second disc fixture (21) is H 3 The second eccentric round hole (23) is positioned in the eccentric round groove (22), and the second disc clamp (21), the eccentric round groove (22) and the second eccentric round hole (23)The circle centers are in a straight line, and the distance between the second eccentric round hole (23) and the central axis of the second disc clamp (21) is H 1 The center distance between the eccentric circular groove (22) and the second eccentric circular hole (23) is H 2 And H is 3 ＝H 2 +H 1 ；
The fixture fixing frame (III) comprises a flange plate (31) and an adjustable rectangular workpiece fixing plate (36) arranged in the middle of the flange plate (31), a pair of adjustable longitudinal pressing plates (32) is arranged on the flange plate (31), a vertical backup plate (33) is fixedly installed on one side of the workpiece fixing plate (36), and a horizontal backup plate (35) is fixedly installed on the lower side of the workpiece fixing plate (36).
2. Modular fixture according to claim 1, characterized in that the double eccentric part has a first eccentricity H 1 And a second eccentricity H 2 。
3. Modular clamp according to claim 1, characterized in that the double eccentric has a central through tube (41), a first eccentric (42) and a second eccentric (43) in the middle of the central through tube (41), the first eccentric (42) being at a centre-axis distance H from the central through tube (41) 1 The distance between the second eccentric wheel (43) and the central axis of the middle through pipe (41) is H 2 。
4. A modular fixture according to claim 1, characterised in that the first eccentric fixture (I) is provided with a pair of fixture securing holes a (14).
5. A modular fixture according to claim 1, characterised in that the second eccentric fixture (II) is provided with a pair of fixture securing holes B (24).
6. The modular fixture of claim 1, wherein a pair of spacer blocks are disposed between the longitudinal pressure plate (32) and the workpiece holding plate (36).
7. The modular fixture of claim 1, wherein a pair of spacer blocks are provided between the vertical back plate (33) and the workpiece holding plate (36).
8. A modular fixture as claimed in claim 1, characterised in that the material of the modular fixture is 65Mn.
9. Modular fixture according to claim 1, characterised in that the flange (31) has a T-shaped groove.
10. A modular fixture as claimed in claim 1, characterised in that the hardness of the modular fixture is HRC48-50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221361289.6U CN217551783U (en) | 2022-05-30 | 2022-05-30 | Combined clamp for machining double-eccentric part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221361289.6U CN217551783U (en) | 2022-05-30 | 2022-05-30 | Combined clamp for machining double-eccentric part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217551783U true CN217551783U (en) | 2022-10-11 |
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ID=83498875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221361289.6U Active CN217551783U (en) | 2022-05-30 | 2022-05-30 | Combined clamp for machining double-eccentric part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217551783U (en) |
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2022
- 2022-05-30 CN CN202221361289.6U patent/CN217551783U/en active Active
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