CN110711871A - Machining process and tool for super-huge spherical roller with central through hole - Google Patents
Machining process and tool for super-huge spherical roller with central through hole Download PDFInfo
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- CN110711871A CN110711871A CN201911044538.1A CN201911044538A CN110711871A CN 110711871 A CN110711871 A CN 110711871A CN 201911044538 A CN201911044538 A CN 201911044538A CN 110711871 A CN110711871 A CN 110711871A
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- workpiece
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- spherical roller
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- 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
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B23/00—Tailstocks; Centres
-
- 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
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
- B23B31/1627—Details of the jaws
- B23B31/16275—Form of the jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention relates to a processing method and a tool for a spherical roller, in particular to a processing technology and a tool for a spherical roller with a super-large central through hole, which comprises a power centering chuck, a slide block, a clamping jaw and a bolt, wherein the power centering chuck comprises a chassis, a slide block, a clamping jaw and a bolt; a plurality of clamping jaws are annularly arranged on the chassis at equal intervals, each clamping jaw is connected with the chassis in a sliding mode through a sliding block, a sliding way is arranged on the chassis at a position corresponding to the sliding block, and the sliding block is matched with the sliding way and moves in the sliding way; the sliding block is fixedly connected with a clamping jaw through a bolt, and the clamping jaw is of a double-step structure; the centre device added with the blocking pad is inserted into the through hole of the workpiece, and the end face of the blocking pad is used for jacking the end face of the workpiece, so that the centre device and the chuck can form a clamping and jacking structure, and the centre failure is avoided. The beneficial effect of adopting above-mentioned technical scheme is: the problems of errors and under-positioning caused by repeated positioning of the workpiece in the machining process are solved.
Description
The height of the base plate is from the edge of the base plate to the center of the base plate;
furthermore, the double-step structure clamping jaws arranged from high to low respectively comprise a first right-angle step and a second circular arc step;
the first right-angle step is used for enabling the outer diameter of a workpiece to be in contact with the straight surface of the right-angle step when the roughly turned rolling body is used for machining a chamfer on the first side;
when the second arc step is used for processing the chamfer on the other side, the processed chamfer on the first side of the workpiece is contacted with the cambered surface of the arc step;
further, the arc surface angle of the second arc step is the same as the preset fillet angle of the first side of the machined workpiece; thus, coaxiality clamping of the workpiece and the chuck can be ensured, and the required accuracy of the turning workpiece forming is ensured;
furthermore, in order to solve the problems of insufficient clamping and positioning and production efficiency caused by the fact that the clamping jaws clamp the length of the workpiece, the chuck clamps one end of the workpiece through the clamping jaws, the other end of the workpiece is provided with a tip device, and the tip device is inserted into a central through hole of the workpiece;
the centre device and the chuck form a clamping and jacking mode;
the center is a standard center, the diameter is 28mm, the maximum propping aperture is phi 28mm, and the center function fails when the diameter of the center drilled hole of the pushed rolling body exceeds phi 28 mm;
still further, in order to solve the problem that the center of a rolling body is too large in diameter and high in end face of a central drilling hole of a machine tool tailstock, so that the center of the tailstock of the machine tool fails to work and further Z-axis direction under-positioning occurs, a thread buckle is arranged on the surface of the outer diameter of the center, a blocking pad is arranged on the outer diameter, the distance position of the blocking pad is adjusted through the thread buckle on the surface of the outer diameter of the center, and when the hole diameter is larger than the outer diameter of the center, the end face of the blocking pad is.
The diameter of the baffle pad is phi 120 mm, and the end face is high by 30 mm; and holes of phi 8mm are uniformly distributed on the outer diameter of the baffle pad at three points, the holes are hinged with threads, and the mounting screws are used for adjusting the flatness of the end face between the baffle pad and the large spherical roller and fixing the baffle pad to prevent displacement rotation.
The machining process of the spherical roller with the central through hole by adopting the tool structure comprises the following steps:
(1) clamping a forged blank on a common power centering chuck only provided with a right-angle step, clamping jaws of the chuck to clamp the length of 1/3 mm of the outer diameter of the blank, ensuring that the clamping jaws meet the optimal position required by a lever principle, machining the end face, the outer diameter and the drilling diameter phi of 30 mm on one side, limiting by a drilling tool and facilitating machining, wherein the drilling length is half of the length of a workpiece; and after the machining is finished, turning over the workpiece, secondarily clamping and machining the end surface, the outer diameter and the drilling diameter phi of the other side by 30 mm, wherein the positioning surface is a fine reference, and the coaxiality of the drilled holes meets the technological requirements.
The diameter of the forged blank is 151.5 mm, and the end face height is 182.3 mm;
(2) adopting a power centering chuck with a double-step structure, clamping the workpiece on the first right-angle step after finishing the processing in the step (1), wherein the surface length of the clamped workpiece does not exceed the maximum coordinate of the R fillet of the end surface given by the workpiece during installation, and processing the R fillet after clamping; and after the machining is finished, turning the workpiece, loading the workpiece into an arc surface of a second arc step which is turned in advance, clamping, machining the R fillet at the other side, and finishing the whole machining.
In the steps (1) and (2), after the clamping jaw clamps the workpiece at each time of machining, the tip device is inserted into the through hole of the workpiece at the machining end to form a clamping and pushing mode with the chuck, so that the workpiece is positioned more stably in the machining process;
the length of the surface of the clamped workpiece is 2-5 mm, so that the cutting tool is convenient to complete and model, and the residual part is removed when the R round angle on the other side is machined, so that a complete outer spherical surface can be obtained.
Due to the fact that the diameter of the workpiece is phi 30 mm, after the clamping jaw clamps the workpiece, the tip device added with the blocking pad is inserted into the through hole of the workpiece, the end face of the blocking pad is used for jacking the end face of the workpiece, the tip device and the chuck can form a clamp, and tip failure is avoided.
The beneficial effect of adopting above-mentioned technical scheme is: the problems of errors and under-positioning caused by repeated positioning of the workpiece in the machining process are solved.
Drawings
Fig. 1 is a structural view of a power centering chuck having a two-step structure according to the present invention.
Fig. 2 is a structural view of a general power centering chuck.
Fig. 3 is a view showing the structure of the center device.
Fig. 4 is a block pad structure view of the center device.
FIG. 5 is a structural diagram of a rolling element product with a central through hole.
In the figure, the device comprises a base plate 1, a base plate 2, a sliding block 3, a clamping jaw 4, a first right-angle step 5, a second circular-arc step 6, a tip device 7, a stop pad 8 and a hole.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example 1
The processing tool for the super-huge spherical roller with the central through hole comprises a power centering chuck, a clamping jaw and a bolt, wherein the power centering chuck comprises a chassis, a sliding block, the clamping jaw and the bolt; a plurality of clamping jaws are annularly arranged on the chassis at equal intervals, each clamping jaw is connected with the chassis in a sliding mode through a sliding block, a sliding way is arranged on the chassis at a position corresponding to the sliding block, and the sliding block is matched with the sliding way and moves in the sliding way; the sliding block is fixedly connected with a clamping jaw through a bolt, and the clamping jaw is of a double-step structure;
the power centering chuck is a three-jaw self-centering chuck;
the double-step structure is arranged from high to low from the edge of the chassis to the center of the chassis;
furthermore, the double-step structure clamping jaws arranged from high to low respectively comprise a first right-angle step and a second circular arc step;
the first right-angle step is used for enabling the outer diameter of a workpiece to be in contact with the straight surface of the right-angle step when the roughly turned rolling body is used for machining a chamfer on the first side;
when the second arc step is used for processing the chamfer on the other side, the processed chamfer on the first side of the workpiece is contacted with the cambered surface of the arc step;
in order to solve the problems of insufficient clamping and positioning and production efficiency caused by the fact that the clamping jaws clamp the length of a workpiece, the chuck clamps one end of the workpiece through the clamping jaws, a tip device is arranged at the other end of the workpiece, and the tip device is inserted into a central through hole of the workpiece;
the centre device and the chuck form a clamping and jacking mode;
the tip is a standard tip, the diameter is 28mm, and the maximum propping aperture is phi 28 mm.
The machining process of the spherical roller with the central through hole by adopting the tool structure comprises the following steps:
(1) clamping a forged blank on a common power centering chuck only provided with a right-angle step, clamping jaws of the chuck to clamp the length of 1/3 mm of the outer diameter of the blank, ensuring that the clamping jaws meet the optimal position required by a lever principle, machining the end face, the outer diameter and the drilling diameter phi of 30 mm on one side, limiting by a drilling tool and facilitating machining, wherein the drilling length is half of the length of a workpiece; and after the machining is finished, turning over the workpiece, secondarily clamping and machining the end surface, the outer diameter and the drilling diameter phi of the other side by 30 mm, wherein the positioning surface is a fine reference, and the coaxiality of the drilled holes meets the technological requirements.
The diameter of the forged blank is 151.5 mm, and the end face height is 182.3 mm;
(2) adopting a power centering chuck with a double-step structure, clamping the workpiece on the first right-angle step after finishing the processing in the step (1), wherein the surface length of the clamped workpiece does not exceed the maximum coordinate of the R fillet of the end surface given by the workpiece during installation, and processing the R fillet after clamping; and after the machining is finished, turning the workpiece, loading the workpiece into an arc surface of a second arc step which is turned in advance, clamping, machining the R fillet at the other side, and finishing the whole machining.
In the steps (1) and (2), after the clamping jaw clamps the workpiece at each time of machining, the tip device is inserted into the through hole of the workpiece at the machining end to form a clamping and pushing mode with the chuck, so that the workpiece is positioned more stably in the machining process;
the length of the surface of the clamped workpiece is 2-5 mm, so that the cutting tool is convenient to complete and model, and the residual part is removed when the R round angle on the other side is machined, so that a complete outer spherical surface can be obtained.
Example 2
The processing tool for the super-huge spherical roller with the central through hole comprises a power centering chuck, a clamping jaw and a bolt, wherein the power centering chuck comprises a chassis, a sliding block, the clamping jaw and the bolt; a plurality of clamping jaws are annularly arranged on the chassis at equal intervals, each clamping jaw is connected with the chassis in a sliding mode through a sliding block, a sliding way is arranged on the chassis at a position corresponding to the sliding block, and the sliding block is matched with the sliding way and moves in the sliding way; the sliding block is fixedly connected with a clamping jaw through a bolt, and the clamping jaw is of a double-step structure;
the power centering chuck is a three-jaw self-centering chuck;
the double-step structure is arranged from high to low from the edge of the chassis to the center of the chassis;
furthermore, the double-step structure clamping jaws arranged from high to low respectively comprise a first right-angle step and a second circular arc step;
the first right-angle step is used for enabling the outer diameter of a workpiece to be in contact with the straight surface of the right-angle step when the roughly turned rolling body is used for machining a chamfer on the first side;
when the second arc step is used for processing the chamfer on the other side, the processed chamfer on the first side of the workpiece is contacted with the cambered surface of the arc step;
in order to solve the problem that the center of a rolling body is too large in diameter and high in end face height and large spherical surface, so that the center of a tailstock of a machine tool fails to be positioned in a Z-axis direction, the diameter of a workpiece is phi 30 mm, a chuck clamps one end of the workpiece through a clamping jaw, the other end of the workpiece is provided with a center device, the center device added with a blocking pad is inserted into a through hole of the workpiece, the end face of the workpiece is jacked by the end face of the blocking pad, and the center device and the chuck can form one clamping and one jacking; the diameter of the baffle pad is phi 120 mm, and the end face is high by 30 mm; and holes of phi 8mm are uniformly distributed on the outer diameter of the baffle pad at three points, the holes are hinged with threads, and the mounting screws are used for adjusting the flatness of the end face between the baffle pad and the large spherical roller and fixing the baffle pad to prevent displacement rotation.
The machining process of the spherical roller with the central through hole by adopting the tool structure comprises the following steps:
(1) clamping a forged blank on a common power centering chuck only provided with a right-angle step, clamping jaws of the chuck to clamp the length of 1/3 mm of the outer diameter of the blank, ensuring that the clamping jaws meet the optimal position required by a lever principle, machining the end face, the outer diameter and the drilling diameter phi of 30 mm on one side, limiting by a drilling tool and facilitating machining, wherein the drilling length is half of the length of a workpiece; and after the machining is finished, turning over the workpiece, secondarily clamping and machining the end surface, the outer diameter and the drilling diameter phi of the other side by 30 mm, wherein the positioning surface is a fine reference, and the coaxiality of the drilled holes meets the technological requirements.
The diameter of the forged blank is 151.5 mm, and the end face height is 182.3 mm;
(2) adopting a power centering chuck with a double-step structure, clamping the workpiece on the first right-angle step after finishing the processing in the step (1), wherein the surface length of the clamped workpiece does not exceed the maximum coordinate of the R fillet of the end surface given by the workpiece during installation, and processing the R fillet after clamping; and after the machining is finished, turning the workpiece, loading the workpiece into an arc surface of a second arc step which is turned in advance, clamping, machining the R fillet at the other side, and finishing the whole machining.
Claims (10)
1. Super-huge spherical roller processing frock of taking central through hole, its characterized in that: the power centering chuck comprises a chassis, a slide block, a clamping jaw and a bolt; a plurality of clamping jaws are annularly arranged on the chassis at equal intervals, each clamping jaw is connected with the chassis in a sliding mode through a sliding block, a sliding way is arranged on the chassis at a position corresponding to the sliding block, and the sliding block is matched with the sliding way and moves in the sliding way; the slider passes through bolt fixed connection clamping jaw, the clamping jaw is two step structure.
2. The tooling for machining the spherical roller with the extra-large central through hole according to claim 1, is characterized in that: the power centering chuck is a three-jaw self-centering chuck.
3. The tooling for machining the spherical roller with the extra-large central through hole according to claim 1, is characterized in that: the double-step structure is arranged from high to low from the edge of the chassis to the center of the chassis.
4. The tooling for machining the spherical roller with the extra-large central through hole according to claim 3, is characterized in that: the double-step structure clamping jaws arranged from high to low respectively comprise a first right-angle step and a second circular arc step.
5. The tooling of any one of claims 1 to 4, wherein the tooling comprises: the chuck clamps one end of a workpiece through the clamping jaw, the other end of the workpiece is provided with a tip device, and the tip device is inserted into a central through hole of the workpiece.
6. The tooling for machining the spherical roller with the extra-large central through hole according to claim 5, is characterized in that: the centre device and the chuck form a clamping and jacking mode.
7. The tooling for machining the spherical roller with the extra-large central through hole according to claim 6, is characterized in that: the surface of the outer diameter of the center is provided with a thread buckle, the outer diameter of the center is provided with a retaining pad, the distance position of the retaining pad is adjusted through the thread buckle on the surface of the outer diameter of the center, and when the aperture is larger than the outer diameter of the center, the end face of the retaining pad is used for jacking the end face of a workpiece.
8. The tooling for machining the spherical roller with the extra-large central through hole according to claim 7, is characterized in that: the diameter of the baffle pad is phi 120 mm, and the end face is high by 30 mm; and phi 8mm holes are uniformly distributed on three points of the outer diameter of the baffle pad.
9. The processing technology of the spherical roller with the super-large central through hole is characterized in that: the method comprises the following steps:
(1) clamping the forged blank on a common power centering chuck only provided with a right-angle step, clamping a clamping jaw of the chuck to clamp the length of 1/3 mm of the outer diameter of the blank, and machining the end face, the outer diameter and the drilling diameter of phi 30 mm on one side, wherein the drilling length is half of the length of a workpiece; after the machining is finished, turning over the workpiece, and secondarily clamping and machining the end face, the outer diameter and the drilling diameter phi of 30 mm on the other side;
(2) adopting a power centering chuck with a double-step structure, clamping the workpiece on the first right-angle step after finishing the processing in the step (1), wherein the surface length of the clamped workpiece does not exceed the maximum coordinate of the R fillet of the end surface given by the workpiece during installation, and processing the R fillet after clamping; turning the workpiece after the machining is finished, loading the workpiece into an arc surface of a second arc step which is turned in advance for clamping, and machining an R fillet on the other side, wherein the whole machining is finished;
in the steps (1) and (2), after the clamping jaw clamps the workpiece at each time of machining, the tip device is inserted into the through hole of the workpiece at the machining end to form a clamping and pushing mode with the chuck.
10. The machining process of the spherical roller with the extra-large belt center through hole as claimed in claim 9, wherein: the surface length of the clamping workpiece is 2-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911044538.1A CN110711871A (en) | 2019-10-30 | 2019-10-30 | Machining process and tool for super-huge spherical roller with central through hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911044538.1A CN110711871A (en) | 2019-10-30 | 2019-10-30 | Machining process and tool for super-huge spherical roller with central through hole |
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| Publication Number | Publication Date |
|---|---|
| CN110711871A true CN110711871A (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911044538.1A Pending CN110711871A (en) | 2019-10-30 | 2019-10-30 | Machining process and tool for super-huge spherical roller with central through hole |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114770054A (en) * | 2022-06-09 | 2022-07-22 | 洛阳新强联回转支承股份有限公司 | Method for processing super-huge type precise spherical roller |
-
2019
- 2019-10-30 CN CN201911044538.1A patent/CN110711871A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114770054A (en) * | 2022-06-09 | 2022-07-22 | 洛阳新强联回转支承股份有限公司 | Method for processing super-huge type precise spherical roller |
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