CN114290112B - A clamping mechanism for a CNC tube blank automatic chamfering machine - Google Patents
A clamping mechanism for a CNC tube blank automatic chamfering machine Download PDFInfo
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- CN114290112B CN114290112B CN202210009856.XA CN202210009856A CN114290112B CN 114290112 B CN114290112 B CN 114290112B CN 202210009856 A CN202210009856 A CN 202210009856A CN 114290112 B CN114290112 B CN 114290112B
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- clamping mechanism
- support
- chamfering machine
- tube blank
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- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 230000007704 transition Effects 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000013072 incoming material Substances 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000003754 machining Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The invention relates to the field of metal cutting machine tools and discloses a clamping mechanism of an automatic chamfering machine for a numerical control pipe blank, which comprises a hollow main shaft, wherein a fixed seat, a telescopic seat, a convex support bowl, a concave support seat and a spherical centering block are arranged in the hollow main shaft, the spherical centering block is limited in a support box, the support box is arranged on the convex support bowl, the convex support bowl is in spherical fit with the concave support seat, a bearing is arranged between the concave support seat and the telescopic seat, the telescopic seat is arranged in the fixed seat and can axially slide along the fixed seat, and the telescopic seat is connected with an oil cylinder piston. The clamping mechanism can avoid manual tool setting under the condition that the position of the incoming material positioning surface is fixed, so that the whole blank chamfering process numerical control can be realized, the blank chamfering production efficiency is greatly improved, the manual labor is reduced, the left auxiliary supporting structure is used for supporting the blank in an auxiliary manner, the tail flicking phenomenon during rotation is avoided, the clamping stability of the blank is improved, and the cutting condition is improved.
Description
Technical Field
The invention relates to the field of metal cutting machine tools, in particular to a clamping mechanism of an automatic chamfering machine for a numerical control tube blank.
Background
In the extrusion production of stainless steel pipes, chamfering of pipe blanks is an indispensable machining procedure in the blank making process. At present, all domestic manufacturers adopt a lathe to chamfer the end face manually, the chamfering mode is to position and clamp the left end of the tube blank by a lathe chuck, perform manual tool setting on the right end of the tube blank, and then adopt a manual or numerical control turning mode to chamfer the right end of the tube blank. Because the lengths of the incoming materials of the tube blanks are different, the left end clamping, positioning and right end cutting mode requires tool setting operation before chamfering each time, and meanwhile, for longer tube blank chamfering, auxiliary support is needed by means of a center frame, otherwise, a blank cantilever is too long and cannot be machined. The machining mode greatly influences the machining efficiency of the tube blank, and meanwhile, the labor intensity of personnel is increased.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a clamping mechanism of an automatic chamfering machine for a numerical control tube blank.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The utility model provides an automatic beveler clamping mechanism of numerical control pipe blank, includes hollow main shaft, be provided with fixing base, flexible seat, convex support bowl, concave surface supporting seat and sphere centering piece in the hollow main shaft, sphere centering piece is spacing in the support box, and when external force acted on, sphere centering piece can retract in the support box, the support box is installed on convex support bowl, convex support bowl carries out spherical cooperation with concave surface supporting seat for convex support bowl can carry out certain angle rotation in each direction in concave surface supporting seat, install the bearing between concave surface supporting seat and the flexible seat, make the concave surface supporting seat can rotate along the central line of flexible seat, flexible seat sets up in the fixing base and can follow fixing base axial sliding, flexible seat connects the hydro-cylinder piston.
Further, the front end of the hollow main shaft is provided with a chuck.
Further, the spherical centering block is positioned at the middle position of the hollow main shaft.
Further, the spherical centering block is tightly supported by the disc spring and is tightly pressed and limited in the supporting box by a pressing plate.
Further, the support box is mounted on the convex support bowl by bolts.
Further, the convex support bowl is in spherical fit with the concave support base under the limit of an intermediate fastener.
Further, the cylinder piston is connected with the fixed seat through a transition piece.
Furthermore, the matching part of the telescopic seat and the fixed seat is designed into a square structure, so that the telescopic seat can only axially slide in the fixed seat and cannot rotate.
Further, the hollow spindle is mounted on the spindle box through a bearing.
Preferably, the intermediate fastener is a press plate with a spherical surface, and the press plate can press the convex support bowl into the concave support seat.
Compared with the prior art, the invention has the following beneficial effects:
(1) The clamping mechanism of the automatic chamfering machine for the tube blank can realize the clamping and positioning of the right end of the tube blank and the left end of the tube blank to extend into the hollow main shaft, so that the positioning surface and the cutting surface are positioned at the same end of the tube blank, and the manual tool setting link is omitted under the condition that the position of the feeding positioning surface is fixed, thereby realizing the numerical control of the whole chamfering process of the tube blank, greatly improving the production efficiency of chamfering of the tube blank and reducing the manual labor amount;
(2) According to the clamping mechanism, the auxiliary supporting structure formed by the left telescopic seat and the like can stretch and follow according to different lengths of blanks, so that the blanks can be supported in an auxiliary manner during chamfering of long materials, the tail flicking phenomenon during rotation is avoided, the clamping stability of the blanks is improved, and the cutting conditions are improved;
(3) According to the clamping mechanism, the tail of the tube blank is tightly attached to the auxiliary supporting device through the spherical hinge structure, so that the influence of cutting and tilting of the tube blank on tail support can be eliminated;
(4) The clamping mechanism can radially assist in positioning and supporting the center of the pipe blank through the spherical centering block.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a clamping mechanism of an automatic chamfering machine for a numerical control pipe blank;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic diagram of the clamping mechanism of the present invention;
In the figure, a spherical centering block 1, a supporting box 2, a convex supporting bowl 3, a bearing 4, a concave supporting seat 5, a telescopic seat 6, an oil cylinder piston 7, a fixed seat 8, a main shaft box 9, a hollow main shaft 10, a chuck 11 and a pipe fitting 12 are arranged.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
As shown in figures 1-2, an automatic chamfering machine clamping mechanism for numerical control pipe blanks comprises a hollow main shaft 10, wherein a fixed seat 8, a telescopic seat 6, a convex support bowl 3, a concave support seat 5 and a spherical centering block 1 are arranged in the hollow main shaft 10, the spherical centering block 1 is positioned at the middle position of the hollow main shaft, the spherical centering block 1 is tightly supported by a disc spring and is tightly limited in a support box 2 by a pressing plate, when external force acts on, the spherical centering block 1 can retract in the support box 2, the support box 2 is mounted on a convex support bowl 3 through bolts, the convex support bowl 3 is in spherical fit with the concave support seat 5 under the limit of a middle fastening piece, the convex support bowl 3 can rotate at a certain angle in all directions in the concave support seat 5, the rotation angle is about + -10 DEG, the middle fastening piece is a pressing plate with the spherical surface, the convex support bowl can be pressed in the concave support seat, a bearing 4 is mounted between the concave support seat 5 and the telescopic seat 6, the concave support seat 5 can retract in the support seat 6 along the central line of the telescopic cylinder seat 6, the piston seat 6 can be connected with the fixed seat 8 through the telescopic cylinder seat 8 in a sliding manner, and the piston seat 8 can be connected with the piston seat 8 through the telescopic structure.
The hollow spindle 10 is mounted on a spindle box 9 (the spindle box is a box for mounting the hollow spindle and is an existing box) through a bearing, and a chuck 11 is arranged at the front end of the hollow spindle 10.
As shown in fig. 3, the implementation process of the clamping mechanism of the automatic chamfering machine for the numerical control pipe blank comprises the following steps that when the pipe blank 12 is fed in the hollow main shaft 10 from right to left in the axial direction by being clamped by a manipulator, the center hole at the left end of the pipe blank 12 is firstly contacted with the spherical centering block 1, the spherical centering block 1 is compressed and retreated until the left end face of the pipe blank 12 is contacted with the convex support bowl 3 along with the feeding of the pipe blank 12, and the convex support bowl 3 rotates in the concave support seat 5 along with the continuous feeding of the pipe blank 12 until the convex support bowl 3 is completely attached to the left end face of the pipe blank 12. The blank 12 continues to be fed, at the moment, the oil cylinder plug cavity formed by the telescopic seat 6 and the oil cylinder piston 7 starts to overflow, and the telescopic seat 6 retreats. When the right end of the blank 12 reaches the positioning surface, the feeding of the manipulator is stopped, and the chuck 11 clamps the blank 12. Along with the start of cutting, the hollow main shaft 10 rotates to drive the whole chuck 11, the blank 12, the convex support bowl 3, the concave support seat 5 and the like to rotate, and in the process, a certain back pressure exists in the cylinder plug cavity of the telescopic seat 6, so that the left end face of the tube blank 12 can be stably supported all the time.
The components and structures not specifically described in the above embodiments are well known in the art and commonly used structures or common means, and are not described here.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210009856.XA CN114290112B (en) | 2022-01-05 | 2022-01-05 | A clamping mechanism for a CNC tube blank automatic chamfering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210009856.XA CN114290112B (en) | 2022-01-05 | 2022-01-05 | A clamping mechanism for a CNC tube blank automatic chamfering machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114290112A CN114290112A (en) | 2022-04-08 |
| CN114290112B true CN114290112B (en) | 2025-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210009856.XA Active CN114290112B (en) | 2022-01-05 | 2022-01-05 | A clamping mechanism for a CNC tube blank automatic chamfering machine |
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| CN (1) | CN114290112B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120587970B (en) * | 2025-08-08 | 2025-10-10 | 鸿基伟业(苏州)汽车零部件有限公司 | Turning clamping device for sleeve chamfering |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216730800U (en) * | 2022-01-05 | 2022-06-14 | 中国重型机械研究院股份公司 | Automatic beveler clamping machine of numerical control pipe base constructs |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB557570A (en) * | 1942-06-02 | 1943-11-25 | Cyril Best | Improvements in or relating to lathes |
| CN104339041B (en) * | 2014-10-27 | 2016-06-22 | 沈阳理工大学 | For processing the automatic cut-to-length floating support device of adapter |
| CN208528116U (en) * | 2018-06-28 | 2019-02-22 | 嘉兴市集珵机械有限公司 | End chamfering machine for stick class workpiece |
| CN214641869U (en) * | 2021-01-18 | 2021-11-09 | 苏州迈星机床有限公司 | A interior positioning mechanism for major axis class parts machining |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216730800U (en) * | 2022-01-05 | 2022-06-14 | 中国重型机械研究院股份公司 | Automatic beveler clamping machine of numerical control pipe base constructs |
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| CN114290112A (en) | 2022-04-08 |
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