CN209919471U - Eccentric shaft clamping device - Google Patents
Eccentric shaft clamping device Download PDFInfo
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- CN209919471U CN209919471U CN201920241749.3U CN201920241749U CN209919471U CN 209919471 U CN209919471 U CN 209919471U CN 201920241749 U CN201920241749 U CN 201920241749U CN 209919471 U CN209919471 U CN 209919471U
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- jaw chuck
- eccentric shaft
- measuring rod
- clamping device
- shaft clamping
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- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 238000003754 machining Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000008878 coupling Effects 0.000 abstract description 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 6
- 210000000078 claw Anatomy 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model discloses an eccentric shaft clamping device belongs to machining equipment technical field, including four-jaw chuck, three-jaw chuck, measure the stick, aligning device and backing plate, the one end of four-jaw chuck's jack catch clamp three-jaw chuck, three-jaw chuck's the other end is equipped with measures the stick, aligning device is used for measuring the measurement that excellent circle is beated, aligning device sets up on the backing plate, the backing plate activity is laid on the lathe layer board, aligning device is including the pad post, connecting rod and percentage table, the one end of pad post links to each other with the connecting rod through locking coupling mechanism I, the other end of connecting rod is fixed with locking connection mechanism II, be fixed with the percentage table on the locking connection mechanism II. The utility model discloses simple structure, convenient to use has improved eccentric shaft machining precision and efficiency, has reduced manufacturing cost.
Description
Technical Field
The utility model relates to an eccentric shaft clamping device belongs to machining equipment technical field.
Background
The eccentric parts are widely applied to mechanical equipment, and in mechanical transmission, the rotary motion is changed into reciprocating linear motion or the reciprocating linear motion is changed into rotary motion, and the eccentric parts are generally used for completing the process. The eccentric shaft of the prior precision cast iron has the eccentricity of 20mm or more, belongs to an eccentric shaft with large eccentricity, is generally called as large eccentricity when the eccentricity is more than or equal to 5mm, has strict requirements on dimensional tolerances of an excircle and the eccentricity, the turning is difficult, the eccentric shaft is turned on the four-jaw independent chuck at present, a gasket with certain thickness calculated according to the eccentricity is padded on one jaw of the four-jaw chuck to realize the processing, in order to ensure the accuracy of the eccentricity, the thickness of the gasket is adjusted for many times to align the workpiece, the workpiece needs to be aligned once when a part is machined, the eccentric distance is machined by only one four-jaw chuck, the machining efficiency is low, and the eccentricity over-differential rate of the workpiece is higher and even reaches more than 30 percent of the eccentricity, so that a large amount of materials and manufacturing cost are wasted, the finished product yield of the eccentric shaft is low, and the normal production progress of the eccentric shaft is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve provides an eccentric shaft clamping device, simple structure, and convenient to use has improved eccentric shaft machining precision and efficiency, has reduced manufacturing cost.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
the utility model provides an eccentric shaft clamping device, including four-jaw chuck, three-jaw chuck, measure the stick, aligning device and backing plate, the one end of the tight three-jaw chuck of jack catch clamp of four-jaw chuck, the other end of three-jaw chuck is equipped with measures the stick, aligning device is used for measuring the measurement that the stick circle is beated, aligning device sets up on the backing plate, the backing plate activity is laid on the lathe layer board, aligning device is including filling up the post, connecting rod and percentage table, the one end of filling up the post is passed through locking coupling mechanism I and is linked to each other with the connecting rod, the other end of connecting rod is fixed with locking connection mechanism II, be fixed with the percentage table on locking connection mechanism II.
The utility model discloses technical scheme's further improvement lies in: the aligning device further comprises a base, and the other end of the cushion column is movably arranged on the base.
The utility model discloses technical scheme's further improvement lies in: locking coupling mechanism I can be followed the pad post and slided from top to bottom and pass through the bolt-up, and locking coupling mechanism II can be followed the connecting rod horizontal slip and pass through the bolt-up.
The utility model discloses technical scheme's further improvement lies in: the diameter of the measuring rod, the thickness of the backing plate and the eccentricity are the same, the length of the measuring rod is the same as that of the backing column, and the distance from the lathe supporting plate to the center of the three-jaw chuck is greater than the length of the measuring rod, namely 1/2 of the eccentricity.
The utility model discloses technical scheme's further improvement lies in: the length of the pad was 150mm, the width was 80mm, and the length of the measuring bar was 100 mm.
The utility model discloses technical scheme's further improvement lies in: the flatness of the lathe supporting plate, the backing plate and the base is less than 0.01 mm.
The utility model discloses technical scheme's further improvement lies in: the flatness of the upper end face and the lower end face of the cushion column are both smaller than 0.01mm, and the circular runout of the measuring rod and the side face of the cushion column is both smaller than 0.01 mm.
Due to the adoption of the technical scheme, the utility model discloses the technological progress who gains is:
the utility model discloses an eccentric shaft clamping device, simple structure, convenient to use has improved eccentric shaft machining precision and efficiency, has reduced manufacturing cost.
The eccentric shaft turning device has the advantages that the eccentric shaft is turned by the four-jaw chuck and the three-jaw chuck, the problem that the eccentric distance is processed by only one four-jaw chuck, a workpiece needs to be aligned once when a part is processed, the processing efficiency is low is solved, the problem of high eccentric distance deviation is solved by arranging the aligning device, the finished product qualification rate of the eccentric shaft is improved, a large amount of raw materials are saved, the production and manufacturing cost is reduced, and meanwhile, the production progress of the eccentric shaft is also improved.
Locking coupling mechanism I can be followed the pad post and slided from top to bottom and pass through the bolt-up, and locking coupling mechanism II can be followed the connecting rod horizontal slip and pass through the bolt-up, and the percentage table of being convenient for removes along equidirectional not, and the measurement of being convenient for measure stick different position circle and beating has guaranteed the qualification rate of eccentricity.
The flatness of the lathe supporting plate, the base plate and the base is smaller than 0.01mm, the flatness of the upper end face and the lower end face of the cushion column is smaller than 0.01mm, meanwhile, the circular runout of the side faces of the measuring rod and the cushion column is smaller than 0.01mm, and the machining precision is guaranteed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the aligning device of the present invention;
the device comprises a four-jaw chuck 1, a three-jaw chuck 2, a measuring rod 3, an alignment device 4-1, a base 4-2, a cushion column 4-3, a connecting rod 4-4, a locking connection mechanism I, 4-5, a locking connection mechanism II, 4-6, a dial indicator 5, a base plate 6 and a lathe supporting plate.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
as shown in figures 1 to 2, the eccentric shaft clamping device comprises a four-jaw chuck 1, a three-jaw chuck 2, a measuring rod 3, an alignment device 4 and a base plate 5, wherein jaws of the four-jaw chuck 1 clamp one end of the three-jaw chuck 2, the other end of the three-jaw chuck 2 is provided with the measuring rod 3, the alignment device 4 is used for measuring circular runout of the measuring rod 3, the alignment device 4 is arranged on the base plate 5, the base plate 5 is movably arranged on a lathe supporting plate 6, the alignment device 4 comprises a cushion column 4-2, a connecting rod 4-3 and a dial indicator 4-6, one end of the cushion column 4-2 is connected with the connecting rod 4-3 through a locking connecting mechanism I4-4, the other end of the connecting rod 4-3 is fixedly provided with a locking connecting mechanism II 4-5, the dial indicator 4-6 is fixedly arranged on the locking connecting mechanism II 4-5, and the diameter of the measuring rod 3 is fixedly provided with a, The thickness of the backing plate 5 and the eccentricity are the same, the length of the measuring rod 3 and the length of the backing column 4-2 are the same, and the distance from the lathe support plate 6 to the center of the three-jaw chuck 2 is greater than the length of the measuring rod 3, and the eccentricity is 1/2. The eccentric shaft turning device has the advantages that the eccentric shaft is turned by the four-jaw chuck 1 and the three-jaw chuck 2, the problem that the eccentric distance is only processed by one four-jaw chuck, the workpiece needs to be aligned once when a part is processed, the processing efficiency is low is solved, the problem of high eccentric distance deviation is solved by arranging the aligning device, the finished product qualification rate of the eccentric shaft is improved, a large amount of raw materials are saved, the production and manufacturing cost is reduced, and meanwhile, the production progress of the eccentric shaft is also improved.
The alignment device 4 also comprises a base 4-1, and the other end of the cushion column 4-2 is movably arranged on the base 4-1. The locking connecting mechanism I4-4 can slide up and down along the cushion column 4-2 and is fastened through bolts, and the locking connecting mechanism II 4-5 can slide left and right along the connecting rod 4-3 and is fastened through bolts, so that the dial indicator 4-6 can move in different directions, the round runout measurement of different positions of the measuring rod 3 is facilitated, and the percent of pass of eccentricity is ensured.
In order to ensure the accuracy of the processing, the length of the backing plate 5 is 150mm, the width is 80mm, and the length of the measuring bar 3 is 100 mm. The flatness of the lathe supporting plate 6, the base plate 5 and the base 4-1 is less than 0.01mm, the flatness of the upper end surface and the lower end surface of the cushion column 4-2 is less than 0.01mm, and the circular runout of the side surfaces of the measuring rod 3 and the cushion column 4-2 is less than 0.01 mm.
Use the work piece that the processing eccentricity is 20mm as an example, the utility model discloses a use method does:
1. one end of a measuring rod 3 with the length of 100mm and the diameter of 20mm is clamped in the three-jaw chuck 2, the other end of the measuring rod is tightly propped against a center hole of a machined workpiece by using a tailstock center tip on a lathe, a base 4-1 is arranged on the aligning device 4, simultaneously, three points of two ends and the center of the measuring rod 3 are respectively measured by a dial indicator on the aligning device 4, and the circular runout is not more than 0.01 mm;
2. clamping one end of a three-jaw chuck 2 provided with a measuring rod 3 on a four-jaw chuck, pushing the other end of the three-jaw chuck against a central hole of the measuring rod 3 by using a tailstock center on a lathe, adjusting the four-jaw chuck 1, movably placing a base plate 5 with the length of 150mm, the width of 80mm and the thickness of 20mm on a lathe supporting plate 6 placed on the lathe, placing an alignment device 4 with a base 4-1 on the base plate 5, respectively measuring three points at two ends and the center of the measuring rod 3 by using dial indicators 4-6, wherein the circular runout is less than or equal to 0.01mm, and simultaneously adjusting pointers of the dial indicators 4-6 to 0 position;
3. adjusting two jaws of the four-jaw chuck 1 in the same direction to enable the three-jaw chuck 2 to deviate by 20mm, lightly clamping the three-jaw chuck 2 by using the four-jaw chuck 1, simultaneously rotating the three-jaw chuck 2 to the lowest point of a lathe connected with the three-jaw chuck, then removing a backing plate 5 from a lathe supporting plate 6, measuring the lowest point of a measuring rod by using a dial indicator 4-6, adjusting the three-jaw chuck 2 until a pointer of the dial indicator 4-6 reaches a zero point, and then adjusting the eccentricity in the adjusted direction to be 20 mm;
4. rotating the four-jaw chuck for 90 degrees, removing a base 4-1 on the alignment device 4, directly placing a cushion column 4-2 on a lathe supporting plate 6, rotating the four-jaw chuck 1 to enable a measuring rod 3 to be in contact with the upper end face of the cushion column 4-2, finally measuring the lowest point of the measuring rod 3 by using a dial indicator 4-6 on the alignment device 4 placed on the lathe supporting plate 6, and rotating the four-jaw chuck 1 until a pointer of the dial indicator 4-6 is adjusted to be at a zero position;
5. rotating the four-jaw chuck for 180 degrees, rotating the four-jaw chuck 1 to enable the measuring rod 3 to be in contact with the other end face of the cushion column 4-2, similarly measuring the lowest point of the measuring rod 3 by using a dial indicator 4-6 on an alignment device 4 arranged on a lathe supporting plate 6, rotating the four-jaw chuck 1 until a pointer of the dial indicator 4-6 is adjusted to a zero position, and adjusting the center of the four-jaw chuck in the direction vertical to the eccentric distance in the step 1;
6. the positive claw of the three-jaw chuck 2 with the adjusted position is changed into a reverse claw, the reverse claw is used for clamping the excircle of the machining workpiece, the shaft center of the machining workpiece is aligned with the center of the three-jaw chuck 2, then the center drill of the tailstock of the lathe is aligned with the center of the end face of the machining workpiece, the center hole can be machined, and finally the center hole is jacked by the top tip of the lathe tailstock, so that the excircle of each part of the machining workpiece can be machined to the size.
The utility model discloses an eccentric shaft clamping device, simple structure, convenient to use has improved eccentric shaft machining precision and efficiency, has reduced manufacturing cost.
Claims (7)
1. An eccentric shaft clamping device is characterized in that: comprises a four-jaw chuck (1), a three-jaw chuck (2) and a measuring rod (3), the device comprises an alignment device (4) and a base plate (5), jaws of a four-jaw chuck (1) clamp one end of the three-jaw chuck (2), a measuring rod (3) is arranged at the other end of the three-jaw chuck (2), the alignment device (4) is used for measuring the circular runout of the measuring rod (3), the alignment device (4) is arranged on the base plate (5), the base plate (5) is movably arranged on a lathe supporting plate (6), the alignment device (4) comprises a cushion column (4-2), a connecting rod (4-3) and a dial indicator (4-6), one end of the cushion column (4-2) is connected with the connecting rod (4-3) through a locking connecting mechanism I (4-4), the other end of the connecting rod (4-3) is fixedly provided with a locking connecting mechanism II (4-5), and the dial indicator (4-6) is fixedly arranged on the locking connecting mechanism II (4-5).
2. The eccentric shaft clamping device according to claim 1, wherein: the alignment device (4) also comprises a base (4-1), and the other end of the cushion column (4-2) is movably arranged on the base (4-1).
3. The eccentric shaft clamping device according to claim 1, wherein: the locking and connecting mechanism I (4-4) can slide up and down along the cushion column (4-2) and is fastened through a bolt, and the locking and connecting mechanism II (4-5) can slide left and right along the connecting rod (4-3) and is fastened through a bolt.
4. The eccentric shaft clamping device according to claim 1, wherein: the diameter of the measuring rod (3), the thickness of the backing plate (5) and the eccentricity are the same, the length of the measuring rod (3) is the same as that of the backing column (4-2), and the dimension of the distance between the lathe supporting plate (6) and the center of the three-jaw chuck (2) which is larger than the length of the measuring rod (3) is 1/2 of the eccentricity dimension.
5. The eccentric shaft clamping device according to claim 1, wherein: the length of the backing plate (5) is 150mm, the width is 80mm, and the length of the measuring rod (3) is 100 mm.
6. The eccentric shaft clamping device according to claim 2, wherein: the flatness of the lathe supporting plate (6), the backing plate (5) and the base (4-1) is less than 0.01 mm.
7. The eccentric shaft clamping device according to claim 1, wherein: the flatness of the upper end surface and the lower end surface of the cushion column (4-2) is less than 0.01mm, and the circular runout of the measuring rod (3) and the side surface of the cushion column (4-2) is less than 0.01 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920241749.3U CN209919471U (en) | 2019-02-26 | 2019-02-26 | Eccentric shaft clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920241749.3U CN209919471U (en) | 2019-02-26 | 2019-02-26 | Eccentric shaft clamping device |
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| Publication Number | Publication Date |
|---|---|
| CN209919471U true CN209919471U (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920241749.3U Active CN209919471U (en) | 2019-02-26 | 2019-02-26 | Eccentric shaft clamping device |
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| CN (1) | CN209919471U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393666A (en) * | 2020-11-13 | 2021-02-23 | 河北光德精密机械股份有限公司 | Large casting end face flatness measuring device |
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2019
- 2019-02-26 CN CN201920241749.3U patent/CN209919471U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393666A (en) * | 2020-11-13 | 2021-02-23 | 河北光德精密机械股份有限公司 | Large casting end face flatness measuring device |
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