CN113245567A - Thin-wall end cover turning anti-deformation auxiliary tool and turning method - Google Patents
Thin-wall end cover turning anti-deformation auxiliary tool and turning method Download PDFInfo
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- CN113245567A CN113245567A CN202110619387.9A CN202110619387A CN113245567A CN 113245567 A CN113245567 A CN 113245567A CN 202110619387 A CN202110619387 A CN 202110619387A CN 113245567 A CN113245567 A CN 113245567A
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- Prior art keywords
- workpiece
- clamping
- turning
- end cover
- thin
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
Abstract
The invention relates to an auxiliary tool for turning a thin-wall end cover and a turning method, in particular to an auxiliary tool for turning a thin-wall end cover and a turning method, aiming at solving the problems that the thinnest position of an end cover workpiece of the existing unit is 1.6mm, the end cover workpiece is easy to deform in the processing process, the dimensional tolerance and the form and position tolerance of the product cannot be guaranteed, the processing progress of the product is influenced, and the nitriding position of the workpiece is easy to stubble, and the auxiliary tool comprises a mould, a pressing plate and a clamping connecting piece; the mould is circular plate body, and the outer disc processing of circular plate body has annular bulge, and annular bulge's thickness is greater than circular plate body's thickness, and circular plate body's central processing has the internal thread hole, and the clamp plate has the circular slab of through-hole for central processing, presss from both sides tight connecting piece one end card on the clamp plate, presss from both sides the internal thread hole threaded connection of the other end of tight connecting piece and mould. The invention belongs to the field of machining of steam turbines.
Description
Technical Field
The invention relates to an auxiliary tool for turning a thin-wall end cover and a turning method, in particular to an anti-deformation auxiliary tool for turning the thin-wall end cover and a turning method. Belongs to the field of turbine machining.
Background
The thinnest position of a turbine unit end cover workpiece is 1.6mm, the turbine unit end cover workpiece belongs to a typical thin-wall part, the dimensional tolerance is within 0.04mm, and the form and position tolerance is within 0.03 mm. Meanwhile, the structure is irregular, the workpiece is easy to deform in the machining process, the nitriding position is easy to jump stubbles and the like, and if the conventional machining method is adopted, the dimensional tolerance and the form and position tolerance of the product cannot be guaranteed, the machining progress of the product is directly influenced, and a technical scheme capable of guaranteeing the quality requirement of the workpiece is further needed.
Disclosure of Invention
The invention aims to solve the problems that the thinnest position of an end cover workpiece of the existing machine set is 1.6mm, the workpiece is easy to deform in the machining process, the dimensional tolerance and the deformation tolerance of the product cannot be guaranteed, the machining progress of the product is influenced, and the nitriding position of the workpiece is easy to stubble, and further provides an anti-deformation auxiliary tool for turning a thin-wall end cover and a turning method.
The technical problem is solved by the following scheme:
it comprises a clamping fixture, a pressing plate and a clamping connecting piece; the mould is circular plate body, and the outer disc processing of circular plate body has annular bulge, and annular bulge's thickness is greater than circular plate body's thickness, and circular plate body's central processing has the internal thread hole, and the clamp plate has the circular slab of through-hole for central processing, presss from both sides tight connecting piece one end card on the clamp plate, presss from both sides the internal thread hole threaded connection of the other end of tight connecting piece and mould.
The method is realized according to the following steps:
the method comprises the following steps: clamping a workpiece: attaching one end of a workpiece to the end face of the circular plate body of the clamping fixture, limiting the outer circular surface of the workpiece through the inner side wall of the annular bulge, pressing the pressing plate on the other end of the workpiece, and tightly pressing the clamping fixture and the pressing plate on the workpiece through the clamping connecting piece, wherein one end of the workpiece, which is used for processing the inner hole groove, is close to the clamping fixture;
step two: clamping a mould: mounting the clamping fixture 1 clamped in the step one on a lathe, and fixing the clamping fixture through a chuck of the lathe;
step three: clamping a turning tool: mounting a turning tool on a lathe tool rest;
step four: processing an excircle: processing the excircle of the workpiece by a lathe and a turning tool, wherein the feeding amount of the lathe tool is 0.2 mm/r, the rotating speed of the lathe is 150 r/min, and the workpiece is cooled by using oil cooling liquid;
step five: clamping a grooving cutter: installing a 0.9mm grooving cutter on a lathe and carrying out tool setting;
step six: and (3) clamping the workpiece again: turning the processed workpiece for 180 degrees, clamping the other end of the workpiece on the inner wall of the annular bulge of the clamping fixture, and performing interference fit on the workpiece and the clamping fixture;
step seven: processing an inner groove of a workpiece: the outer groove of the workpiece is machined by a lathe and a grooving tool of 0.9mm, the feed rate of the lathe tool is F equal to 0.02 mm/r, the lathe rotating speed is r equal to 30 r/min, and the workpiece is cooled by using an oil cooling liquid.
Compared with the prior art, the invention has the following beneficial effects:
1. in order to prevent clamping deformation of the thin-wall part, clamping is carried out through the clamping fixture 1, the pressing plate 2 and the clamping connecting piece 3, interference magnitude is 0.02mm, so that the clamping is largest in contact area and firm and stable in clamping, and the difficulty of clamping deformation is solved.
2. Since the bore slots in the part are a minimum of 0.9 mm. Meanwhile, the position of the groove is positioned in the inner hole groove, and the groove is cut by a cutter angle of 0.9mm, so that the maximum rigidity and durability of the cutter are ensured, and the groove of 0.9mm can be smoothly machined.
3. Because this product material of this application is special, still nitrogenize the piece simultaneously, use normal coolant liquid cooling can produce the corrosion, influence product appearance quality. Therefore, when the product is processed, the oil cooling liquid is selected for cooling, so that the rust can be prevented, and the effect of lubricating the cutter can be achieved in the processing process.
Drawings
Fig. 1 is a schematic structural diagram of a thin-wall workpiece mounted on a clamping fixture 1, a pressure plate 2 and a clamping connecting piece 3.
Fig. 2 is a schematic structural diagram of a thin-wall workpiece mounted on the clamping fixture 1 in an interference fit manner.
Fig. 3 is a front view of the tire 1.
Fig. 4 is a side view of fig. 3.
Fig. 5 is a schematic view of the installation of the pressure plate 2, the clamp connection member 3 and the clamp pad 4.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 5, and the deformation-preventing auxiliary tool for turning the thin-wall end cover comprises a clamping fixture 1, a pressing plate 2 and a clamping connecting piece 3; mould 1 is circular plate body, and the outer disc processing of circular plate body has annular protrusion, and annular protrusion's thickness is greater than circular plate body's thickness, and circular plate body's central processing has the internal thread hole, and clamp plate 2 has the circular slab of through-hole for central processing, and 3 one end cards of tight connecting piece of clamp are on clamp plate 2, the other end of the tight connecting piece of clamp 3 and the internal thread hole threaded connection of mould 1.
The second embodiment is as follows: the embodiment is described with reference to fig. 1-2, and the clamping connection member 3 of the deformation-preventing auxiliary tool for turning the thin-wall end cover is a screw rod with a nut at one end, one end of the screw rod is in threaded connection with the clamping fixture 1, and the nut at the other end of the screw rod is pressed against the pressing plate 2. Other components and connection modes are the same as those of the first embodiment.
The third concrete implementation mode: the embodiment is described with reference to fig. 1 and 5, and the deformation-preventing auxiliary tool for turning the thin-wall end cover further comprises a clamping gasket 4, wherein the clamping gasket 4 is sleeved on a screw rod between the nut and the pressure plate 2. Other components and connection modes are the same as those of the second embodiment.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to fig. 3, and according to the deformation-preventing auxiliary tool for turning the thin-wall end cover, a plurality of U-shaped grooves are radially processed on the mold 1, and the bottoms of the U-shaped grooves are located on a circular plate body of the mold 1. Other components and connection modes are the same as those of the second embodiment.
The fifth concrete implementation mode: the turning method of the thin-wall end cover deformation-preventing auxiliary tool according to the embodiment is described with reference to fig. 1 to 5,
the method comprises the following steps: clamping a workpiece: attaching one end of a workpiece to the end face of a circular plate body of a clamping fixture 1, limiting the outer circular surface of the workpiece through the inner side wall of an annular bulge, pressing a pressing plate 2 on the other end of the workpiece, and tightly pressing the clamping fixture 1 and the pressing plate 2 on the workpiece through a clamping connecting piece 3, wherein one end of the workpiece, which is used for processing an inner hole groove, is close to the clamping fixture 1;
step two: clamping a mould: mounting the clamping fixture 1 clamped in the step one on a lathe, and fixing the clamping fixture 1 through a chuck of the lathe;
step three: clamping a turning tool: mounting a turning tool on a lathe tool rest;
step four: processing an excircle: processing the excircle of the workpiece by a lathe and a turning tool, wherein the feeding amount of the lathe tool is 0.2 mm/r, the rotating speed of the lathe is 150 r/min, and the workpiece is cooled by using oil cooling liquid;
step five: clamping a grooving cutter: installing a 0.9mm grooving cutter on a lathe and carrying out tool setting;
step six: and (3) clamping the workpiece again: turning the processed workpiece for 180 degrees, clamping the other end of the workpiece on the inner wall of the annular bulge of the clamping fixture 1, and performing interference fit on the workpiece and the clamping fixture 1;
step seven: processing an inner groove of a workpiece: the outer groove of the workpiece is machined by a lathe and a grooving tool of 0.9mm, the feed rate of the lathe tool is F equal to 0.02 mm/r, the lathe rotating speed is r equal to 30 r/min, and the workpiece is cooled by using an oil cooling liquid.
The sixth specific implementation mode: the present embodiment is described with reference to fig. 1 to 5, and in the turning method of the deformation-preventing auxiliary tool for turning the thin-walled end cover according to the present embodiment, in the first step, the clamping fixture 1, the workpiece, and the pressing plate 2 are coaxially arranged. Other components and connection modes are the same as those of the second embodiment.
The seventh embodiment: in the turning method of the thin-wall end cover deformation-preventing auxiliary tool according to the embodiment described above, one end of the workpiece is in interference fit with the inner side wall of the annular protrusion of the clamping fixture 1 in the first step, which is described with reference to fig. 1 to 5. Other components and connection modes are the same as those of the sixth embodiment.
The specific implementation mode is eight: in the turning method of the thin-wall end cover deformation-preventing auxiliary tool according to the embodiment described above with reference to fig. 1 to 5, the diameter of the outer circular surface of the pressing plate 2 in the first step is smaller than the diameter of the outer circular surface of the workpiece where the pressing plate 2 contacts the workpiece. Other components and connection modes are the same as those of the first embodiment.
Claims (8)
1. The utility model provides a turning thin wall end cover shape appurtenance of preapring for an unfavorable turn of events which characterized in that: the clamping device comprises a clamping fixture (1), a pressing plate (2) and a clamping connecting piece (3); mould (1) is circular plate body, and the outer disc processing of circular plate body has annular bulge, and annular bulge's thickness is greater than circular plate body's thickness, and circular plate body's central processing has the internal thread hole, and clamp plate (2) have the circular slab of through-hole for central processing, and clamp connecting piece (3) one end card is on clamp plate (2), the internal thread hole threaded connection of the other end and mould (1) of clamp connecting piece (3).
2. The auxiliary tool for preventing deformation of the turned thin-wall end cover according to claim 1, is characterized in that: the clamping connecting piece (3) is a screw rod with a nut at one end, one end of the screw rod is in threaded connection with the clamping fixture (1), and the nut at the other end of the screw rod is propped against the pressing plate (2).
3. The auxiliary tool for preventing deformation of the turned thin-wall end cover according to claim 2, is characterized in that: the nut clamping device further comprises a clamping gasket (4), and the clamping gasket (4) is sleeved on the screw rod between the nut and the pressing plate (2).
4. The auxiliary tool for preventing deformation of the turned thin-wall end cover according to claim 2, is characterized in that: a plurality of U-shaped grooves are processed on the mould (1) along the radial direction, and the bottoms of the U-shaped grooves are positioned on a circular plate body of the mould (1).
5. The turning method for turning the thin-wall end cover anti-deformation auxiliary tool is characterized in that the turning method comprises the following steps: the method is realized according to the following steps:
the method comprises the following steps: clamping a workpiece: attaching one end of a workpiece to the end face of a circular plate body of a clamping fixture (1), limiting the outer circular surface of the workpiece through the inner side wall of an annular bulge, pressing a pressing plate (2) on the other end of the workpiece, and tightly pressing the clamping fixture (1) and the pressing plate (2) on the workpiece through a clamping connecting piece (3), wherein one end of the workpiece, which is used for processing an inner hole groove, is close to the clamping fixture (1);
step two: clamping a mould: mounting the clamping fixture (1) clamped in the step one on a lathe, and fixing the clamping fixture (1) through a chuck of the lathe;
step three: clamping a turning tool: mounting a turning tool on a lathe tool rest;
step four: processing an excircle: processing the excircle of the workpiece by a lathe and a turning tool, wherein the feeding amount of the lathe tool is 0.2 mm/r, the rotating speed of the lathe is 150 r/min, and the workpiece is cooled by using oil cooling liquid;
step five: clamping a grooving cutter: installing a 0.9mm grooving cutter on a lathe and carrying out tool setting;
step six: and (3) clamping the workpiece again: turning the processed workpiece for 180 degrees, clamping the other end of the workpiece on the inner wall of the annular bulge of the clamping fixture (1), and performing interference fit on the workpiece and the clamping fixture (1);
step seven: processing an inner groove of a workpiece: the outer groove of the workpiece is machined by a lathe and a grooving tool of 0.9mm, the feed rate of the lathe tool is F equal to 0.02 mm/r, the lathe rotating speed is r equal to 30 r/min, and the workpiece is cooled by using an oil cooling liquid.
6. The turning method of the thin-wall end cover turning deformation-preventing auxiliary tool comprises the step one, wherein the clamping fixture (1), the workpiece and the pressing plate (2) are coaxially arranged.
7. The turning method of the thin-wall end cover turning deformation-preventing auxiliary tool according to claim 5, wherein in the first step, one end of the workpiece is in clearance fit with the inner side wall of the annular bulge of the clamping fixture (1).
8. The turning method of the thin-wall end cover turning deformation-preventing auxiliary tool according to claim 5, wherein in the first step, the diameter of the outer circular surface of the pressing plate (2) is smaller than that of the outer circular surface of the workpiece where the pressing plate (2) is in contact with the workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110619387.9A CN113245567A (en) | 2021-06-03 | 2021-06-03 | Thin-wall end cover turning anti-deformation auxiliary tool and turning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110619387.9A CN113245567A (en) | 2021-06-03 | 2021-06-03 | Thin-wall end cover turning anti-deformation auxiliary tool and turning method |
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| Publication Number | Publication Date |
|---|---|
| CN113245567A true CN113245567A (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110619387.9A Withdrawn CN113245567A (en) | 2021-06-03 | 2021-06-03 | Thin-wall end cover turning anti-deformation auxiliary tool and turning method |
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| CN (1) | CN113245567A (en) |
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2021
- 2021-06-03 CN CN202110619387.9A patent/CN113245567A/en not_active Withdrawn
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Application publication date: 20210813 |
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