CN114260724A - Auxiliary tool and method for machining stainless steel ultrathin gasket - Google Patents
Auxiliary tool and method for machining stainless steel ultrathin gasket Download PDFInfo
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- CN114260724A CN114260724A CN202111557726.1A CN202111557726A CN114260724A CN 114260724 A CN114260724 A CN 114260724A CN 202111557726 A CN202111557726 A CN 202111557726A CN 114260724 A CN114260724 A CN 114260724A
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Abstract
The invention relates to the field of machining, and the machining of a stainless steel ultrathin gasket is completed on common equipment, so that the inner diameter and the outer diameter of a stainless steel ultrathin gasket part can be efficiently machined; in particular to an assistive device and a method for processing a stainless steel ultrathin gasket. The auxiliary device comprises an inner hole auxiliary device and an outer hole auxiliary device, wherein the inner hole auxiliary device comprises a body, a first gland and a first screw; the cross section of the inner cavity of the body is square; the first gland consists of a top plate and a square boss connected below the top plate, a processing hole is formed in the center of the first gland from top to bottom, and the first gland is installed on an opening in the top of the cylinder through a first screw; the outer hole auxiliary tool comprises a positioning piece, a second gland, a pressure plate and a second screw; the positioning column is used for sleeving a gasket with a machined inner hole, and a screw hole is formed in the center of the top of the positioning column; the second gland consists of an annular side edge and a flat plate which is connected to the top of the annular side edge and is provided with a central hole; the second screw penetrates through the pressing plate and is screwed into the screw hole at the top of the positioning column, and the center of the head of the second screw is provided with a tip hole.
Description
Technical Field
The invention relates to the field of machining, and the machining of a stainless steel ultrathin gasket is completed on common equipment, so that the inner diameter and the outer diameter of a stainless steel ultrathin gasket part can be efficiently machined; in particular to an assistive device and a method for processing a stainless steel ultrathin gasket.
Background
In the mechanical processing, the processing of parts with ultra-thin gaskets (the thickness is less than 0.1 mm) is often met and is limited by processing conditions, and when a punch is adopted, because the hardness of stainless steel is higher, a cutter is influenced, and the processing quantity is limited (the number of pieces processed in one time is not more than 10). When special equipment (a punch) is not provided, a lathe is often required to replace the punch to realize the machining of the stainless steel gasket.
The general unloading of this type of gasket is square, and the postprocessing becomes the ring shape, because part thickness is thin, and the deformation that the cutting force arouses can be great in the course of working, especially accomplishes the processing in the twinkling of an eye at the lathe tool, and the heat altered shape that produces by the cutting force causes hole, the remaining long-pending bits tumour of excircle with extrusion deformation, forms the work piece unevenness, and follow-up need roll the pressure on the platform and accomplish levelling work, and machining efficiency is very low.
Disclosure of Invention
The invention provides an auxiliary tool and a method for machining a stainless steel ultrathin gasket, aiming at solving the technical problems of difficult clamping and low machining efficiency of efficiently finishing the stainless steel ultrathin gasket on common equipment in the machining process.
The assistive device for processing the stainless steel ultrathin gasket is realized by adopting the following technical scheme: an assistive device for processing a stainless steel ultrathin gasket comprises an inner hole assistive device and an outer hole assistive device, wherein the inner hole assistive device comprises a body, a first gland and a first screw; the body consists of a supporting cylinder and a cylinder body fixed on the top of the supporting cylinder, the top of the cylinder body is provided with an opening, and the cross section of the inner cavity of the cylinder body is square; the first gland consists of a top plate and a square boss connected below the top plate, the square boss is in clearance fit with a square inner cavity of the cylinder body, a processing hole is formed in the center of the first gland from top to bottom, and the first gland is arranged on an opening in the top of the cylinder body through a first screw;
the outer hole auxiliary tool comprises a positioning piece, a second gland, a pressure plate and a second screw; the positioning piece consists of an installation cylinder, a circular supporting plate fixed at the top of the installation cylinder and a positioning column fixed at the top of the circular supporting plate, the positioning column is used for sleeving a gasket with a machined inner hole, and a screw hole is formed in the center of the top of the positioning column; the second gland consists of an annular side edge and a flat plate which is connected to the top of the annular side edge and is provided with a central hole; the outer diameter of the pressure plate is larger than the central hole of the second gland, and the center of the pressure plate is provided with a hole for mounting a second screw; the second screw penetrates through the center holes of the pressure plate and the second gland and is screwed into the top screw hole of the positioning column, and the center of the head of the second screw is provided with a tip hole.
The supporting cylinder of the inner hole auxiliary tool is used for being installed on the working surface of a machine tool to realize the positioning of the auxiliary tool, and the square cavity is used for stacking square workpieces so as to be processed into a gasket; the square boss below the first gland can just extend into the square cavity on the body and is screwed down through the first screw to press the workpiece. The first gland can adjust the pressing position according to the number of workpieces. Should assist the utensil location stable, can stack more work piece, machining efficiency is high.
The installation cylinder of utensil is assisted in the outer hole is used for installing the location that the utensil was assisted in the realization on the lathe, and the reference column excircle cooperatees with the gasket hole, fixes a position the gasket, and the gasket that stacks is then withstood to circular backup pad, and the second gland cover is at the reference column top for push down the gasket of processing the hole of cover on the reference column, and the second screw passes and twists in the screw at the reference column top after the clamp plate, makes the second gland tightly push down the gasket. The second gland can suitably adjust the pressing position according to the quantity of the gaskets so as to adapt to the processing of different quantities of gaskets.
By designing the auxiliary tool, the ultrathin gasket machined by the lathe has the following effects:
1) the problem of residual built-up edges in the machining process is thoroughly solved, and the quality of the gasket meets the design requirements of a drawing;
2) the number of the workpieces clamped at one time is increased by hundreds of times, and the processing efficiency is obviously improved.
The method for processing the stainless steel ultrathin gasket is realized by adopting the following technical scheme: comprises two procedures of processing an inner hole and an outer hole; when an inner hole is machined, a body of the inner hole auxiliary tool is vertically fixed on a machine tool through a supporting cylinder at the bottom, the size of a square inner cavity of the body is consistent with that of a workpiece blank, the workpiece is placed into the square inner cavity in a laminating mode and pressed well through a first gland, a square boss of the first gland presses the workpiece and is fastened through a first screw, and a lathe tool machines a gasket inner hole on the workpiece through a machining hole in the first gland;
when the outer diameter is machined, a positioning piece of an outer hole auxiliary tool is installed and positioned on a machine tool through a mounting cylinder at the bottom, the size of the outer circle of the positioning column is matched with that of the inner hole of a machined gasket, the gasket is sleeved on the positioning column, a second pressing cover is pressed on the top of the gasket, the outer diameter of the second pressing cover is smaller than the size of the outer circle of the gasket, a pressing plate is pressed at the center of the second pressing plate, and a second screw penetrates through the pressing plate and is screwed into a screw hole at the top of a positioning bead to play a role in auxiliary positioning; and the center of the lathe is propped at the center hole of the second screw, and then the lathe tool processes the outer diameter of the gasket.
The method has the following beneficial effects:
1) the problem of residual built-up edge of the ultrathin gasket is obviously improved;
2) the processing efficiency of the ultrathin gasket is improved;
3) the surface quality of the ultrathin gasket is improved.
Drawings
Fig. 1 is a schematic view of a gasket construction.
Fig. 2 is a schematic view of an auxiliary inner hole clamping tool.
Fig. 3 is a schematic view of an outer hole auxiliary tool clamp.
FIG. 4 is a schematic view of an inner hole machined by the original machining tool.
FIG. 5 is a schematic view of an original processing tool for processing an outer hole.
1-body, 2-first gland, 3-first screw, 4-gasket, 5-positioning piece, 6-second gland, 7-pressing plate, 8-second screw and 9-tip.
Detailed Description
Example 1
An assistive device for processing a stainless steel ultrathin gasket comprises an inner hole assistive device and an outer hole assistive device, wherein the inner hole assistive device comprises a body 1, a first gland 2 and a first screw 3; the body 1 consists of a support cylinder and a cylinder body fixed on the top of the support cylinder, the top of the cylinder body is provided with an opening, and the cross section of the inner cavity of the cylinder body is square; the first gland 2 consists of a top plate and a square boss connected below the top plate, the square boss is in clearance fit with a square inner cavity of the cylinder body, a processing hole is formed in the center of the first gland 2 from top to bottom, and the first gland 2 is arranged on the opening in the top of the cylinder body through a first screw 3;
the outer hole auxiliary tool comprises a positioning piece 5, a second gland 6, a pressure plate 7 and a second screw 8; the positioning piece consists of an installation cylinder, a circular supporting plate fixed at the top of the installation cylinder and a positioning column fixed at the top of the circular supporting plate, the positioning column is used for sleeving a gasket 4 with a machined inner hole, and a screw hole is formed in the center of the top of the positioning column; the second gland 6 consists of an annular side edge and a flat plate which is connected to the top of the annular side edge and is provided with a central hole; the outer diameter of the pressure plate 7 is larger than the central hole of the second gland 6, and the center of the pressure plate 7 is provided with a hole for mounting a second screw 8; a second screw 8 penetrates through the pressing plate and is screwed into the screw hole at the top of the positioning column, and the center of the head of the second screw 8 is provided with a tip hole; the machining hole on the first gland 2 is larger than the inner diameter of the inner hole of the gasket to be machined; the excircle of the positioning part of the positioning column is matched with the size of the inner hole of the machined gasket, and the outer diameter of the second gland 6 is smaller than the size of the excircle of the gasket. The central symmetry degree of the two symmetrical positioning surfaces of the inner cavity of the cylinder body and the supporting cylinder is less than 0.1mm, so that the square workpiece is accurately positioned after being placed, and the machining precision is ensured. A plurality of gaskets also play a mutual pressing role, and the processing precision is further improved.
Example 2
The top of the cylinder body is provided with a pair of screw holes which are symmetrically arranged at the front side, the rear side or the left side and the right side of the square inner cavity, so that the first pressing cover can stably press a workpiece (a gasket to be machined).
In order to improve the processing efficiency of the inner circle and the outer circle of the ultrathin gasket and eliminate the problem of residual built-up edges in the processing process, the auxiliary tool is designed by analyzing the structural characteristics of the product and the problems in the processing process, so that the problems of poor surface quality and low processing efficiency of the product caused by thermal deformation and extrusion deformation in the processing process are solved.
A gasket manufactured by company is made of stainless steel 1Cr18Ni9Ti, and the structure of the gasket is shown as an inner hole phi 61 shown in figure 1+0.3 0mm, external circle phi 750 -0.3mm, 0.1mm thick, is a typical ultra-thin shim.
1. The gasket is blanked into a square of 80 multiplied by 80, although the shape is simple, the gasket is limited by processing conditions, and at present, the gasket can only be processed on a lathe, and the clamping is difficult.
2. Because the part thickness is thin, the deformation caused by cutting force in the machining process is larger, especially in the moment that the lathe tool finishes machining, residual built-up edges of an inner hole and an outer circle are caused by thermal deformation and extrusion deformation generated by the cutting force, the workpiece is uneven, and then leveling work is finished by rolling on a platform, so that the machining efficiency is low.
The original auxiliary tool adopts a clamping and jacking mode, an inner hole is machined firstly, and then an outer circle is machined by taking the inner hole as a reference (as shown in figures 4 and 5). 3 to 5 pieces can be processed at most once, and the efficiency is low.
By analyzing the structure and material characteristics of the product, a new assistant tool is designed and processed.
The auxiliary tool is adopted when the inner hole ultrathin gasket is processed.
1. When an inner hole is processed: should assist the utensil and constitute by body, first gland, first screw, the main part inner chamber is square, and the size is unanimous with the work piece blank, and the one end opening is convenient for install the work piece, does benefit to simultaneously and assists the utensil bottom surface processing, ensures to assist the utensil bottom surface plane degree good, can once only put into the intracavity simultaneously with 500 gaskets, presses well with the gland, and the screw fastening (see fig. 2).
Auxiliary tool for processing outer diameter of inner-hole ultrathin gasket
2. When the outer diameter is processed: the auxiliary tool consists of a positioning column, a second gland, a pressing plate and a second screw, wherein the excircle of the positioning part of the positioning column is matched with the size of the inner hole of the processed gasket, the outer diameter of the second gland is smaller than the excircle size of the gasket, and the second screw and the pressing plate are pressed and fixed for auxiliary positioning (see figure 3). The auxiliary tool can eliminate the problem of residual built-up edges in the processing of the ultrathin gasket, the product percent of pass reaches 100%, and the processing efficiency of the ultrathin gasket is effectively improved.
Claims (7)
1. An assistive device for processing a stainless steel ultrathin gasket comprises an inner hole assistive device and an outer hole assistive device, and is characterized in that the inner hole assistive device comprises a body, a first gland and a first screw; the body consists of a supporting cylinder and a cylinder body fixed on the top of the supporting cylinder, the top of the cylinder body is provided with an opening, and the cross section of the inner cavity of the cylinder body is square; the first gland consists of a top plate and a square boss connected below the top plate, the square boss is in clearance fit with a square inner cavity of the cylinder body, a processing hole is formed in the center of the first gland from top to bottom, and the first gland is arranged on an opening in the top of the cylinder body through a first screw;
the outer hole auxiliary tool comprises a positioning piece, a second gland, a pressure plate and a second screw; the positioning piece consists of an installation cylinder, a circular supporting plate fixed at the top of the installation cylinder and a positioning column fixed at the top of the circular supporting plate, the positioning column is used for sleeving a gasket with a machined inner hole, and a screw hole is formed in the center of the top of the positioning column; the second gland consists of an annular side edge and a flat plate which is connected to the top of the annular side edge and is provided with a central hole; the outer diameter of the pressure plate is larger than the central hole of the second gland, and the center of the pressure plate is provided with a hole for mounting a second screw; the second screw penetrates through the center holes of the pressure plate and the second gland and is screwed into the top screw hole of the positioning column, and the center of the head of the second screw is provided with a tip hole.
2. The assistive device for processing the stainless steel ultra-thin gasket of claim 1, wherein the processing hole on the first gland is larger than the inner diameter of the inner hole of the gasket to be processed.
3. The assistive device for processing the stainless steel ultrathin gasket of claim 2, wherein the outer circle of the positioning column is matched with the size of the inner hole of the processed gasket, and the outer diameter of the second gland is smaller than the size of the outer circle of the gasket.
4. The auxiliary tool for processing the stainless steel ultra-thin gasket as claimed in any one of claims 1-3, wherein a pair of screw holes are provided on the top of the cylinder body, and the pair of screw holes are symmetrically provided on the front and rear sides or the left and right sides of the square inner cavity.
5. A method for processing stainless steel ultra-thin shim includes two procedures of processing inner hole and outer hole; the machining method is characterized in that when an inner hole is machined, a body of the inner hole auxiliary tool is vertically fixed on a machine tool through a supporting cylinder at the bottom, the size of a square inner cavity of the body is consistent with that of a workpiece blank, the workpiece is placed into the square inner cavity in a laminating mode and pressed well through a first pressing cover, a square boss of the first pressing cover presses the workpiece and is fastened through a first screw, and a turning tool machines a gasket inner hole on the workpiece through a machining hole in the first pressing cover;
when the outer diameter is machined, a positioning piece of an outer hole auxiliary tool is installed and positioned on a machine tool through a mounting cylinder at the bottom, the size of the outer circle of the positioning column is matched with that of the inner hole of a machined gasket, the gasket is sleeved on the positioning column, a second pressing cover is pressed on the top of the gasket, the outer diameter of the second pressing cover is smaller than the size of the outer circle of the gasket, a pressing plate is pressed at the center of the second pressing plate, and a second screw penetrates through the pressing plate and is screwed in a screw hole at the top of the positioning column to play a role in auxiliary positioning; and the center of the lathe is propped at the center hole of the second screw, and then the lathe tool processes the outer diameter of the gasket.
6. The method for manufacturing ultra-thin stainless steel shims according to claim 5, wherein the shims have a thickness of 0.1mm, and are cut into 80X 80 square pieces for machining the inner holes, and 500 shims are simultaneously placed into the square inner cavities at one time.
7. The method for processing the stainless steel ultra-thin gasket as claimed in claim 5 or 6, wherein the degree of symmetry between the two symmetrical positioning surfaces of the square inner cavity of the cylinder body and the center of the supporting cylinder is less than 0.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111557726.1A CN114260724A (en) | 2021-12-20 | 2021-12-20 | Auxiliary tool and method for machining stainless steel ultrathin gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111557726.1A CN114260724A (en) | 2021-12-20 | 2021-12-20 | Auxiliary tool and method for machining stainless steel ultrathin gasket |
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| Publication Number | Publication Date |
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| CN114260724A true CN114260724A (en) | 2022-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111557726.1A Pending CN114260724A (en) | 2021-12-20 | 2021-12-20 | Auxiliary tool and method for machining stainless steel ultrathin gasket |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6511543B1 (en) * | 1997-12-23 | 2003-01-28 | Unaxis Balzers Aktiengesellschaft | Holding device |
| CN201304577Y (en) * | 2008-11-18 | 2009-09-09 | 株洲百泰硬质合金设备有限公司 | Fixture for machining excircle of thin wafer with center hole |
| CN112589381A (en) * | 2020-11-16 | 2021-04-02 | 中国航发西安动力控制科技有限公司 | Machining method and clamping fixture for high-precision thin-wall elastic opening piston ring part |
| CN113369953A (en) * | 2021-06-29 | 2021-09-10 | 中国航发贵州黎阳航空动力有限公司 | Clamp for machining excircle of shim |
| CN113369952A (en) * | 2021-06-29 | 2021-09-10 | 中国航发贵州黎阳航空动力有限公司 | Clamp for machining inner hole of shim |
-
2021
- 2021-12-20 CN CN202111557726.1A patent/CN114260724A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6511543B1 (en) * | 1997-12-23 | 2003-01-28 | Unaxis Balzers Aktiengesellschaft | Holding device |
| CN201304577Y (en) * | 2008-11-18 | 2009-09-09 | 株洲百泰硬质合金设备有限公司 | Fixture for machining excircle of thin wafer with center hole |
| CN112589381A (en) * | 2020-11-16 | 2021-04-02 | 中国航发西安动力控制科技有限公司 | Machining method and clamping fixture for high-precision thin-wall elastic opening piston ring part |
| CN113369953A (en) * | 2021-06-29 | 2021-09-10 | 中国航发贵州黎阳航空动力有限公司 | Clamp for machining excircle of shim |
| CN113369952A (en) * | 2021-06-29 | 2021-09-10 | 中国航发贵州黎阳航空动力有限公司 | Clamp for machining inner hole of shim |
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Application publication date: 20220401 |