CN111002194A - Tool and method for processing composite surface of metal matrix coating reflective mirror - Google Patents
Tool and method for processing composite surface of metal matrix coating reflective mirror Download PDFInfo
- Publication number
- CN111002194A CN111002194A CN201911393032.1A CN201911393032A CN111002194A CN 111002194 A CN111002194 A CN 111002194A CN 201911393032 A CN201911393032 A CN 201911393032A CN 111002194 A CN111002194 A CN 111002194A
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- processing
- composite
- metal matrix
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0092—Grinding attachments for lathes or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/08—Mirrors; Reflectors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The parts with the composite reflective surfaces are required to be optically polished during processing, and a certain thickness of the chromium layer is required to be ensured. The integral precision requirement of the parts is high, and particularly, in the processing before and after the chromium plating of the composite angle polished surface, the sharp end of a workpiece is seriously discharged to cause rough edges of a plating layer, so that the problems of chromium leakage, edge collapse, nonuniform thickness of the chromium layer, poor flatness of the composite angle reflecting surface, poor imaging quality and the like are easily caused. Machining, optics, surface finishing, etc. are involved in the processing, and they must be properly joined to each other. Except for the processing method, the used tool comprises the following steps: the polishing datum plane is used for a composite angle polishing surface of a part, the part is fixed by paraffin after being arranged in a cavity of the body, and the datum plane is calibrated before the paraffin is solidified and then polished. The polishing machine solves the influences of factors such as smaller polishing surface, workpiece shape, compound angle and the like, and solves the problems of poor flatness, edge collapse, chromium leakage, uneven chromium layer thickness and the like caused by difficult clamping and positioning of the workpiece and uneven stress during polishing of the compound surface. And the difficulty of polishing operation is reduced.
Description
Technical Field
The invention belongs to the field of special process machining methods, and particularly relates to a tool and a method for machining a composite surface of a metal matrix coating reflector.
Background
In the design drawing, due to the requirement of the use environment, the composite reflective surface part which is plated on a metal matrix and has optical technical requirements is frequently subjected to polishing processing in the machining of mechanical parts, and a certain chromium layer thickness is required to be ensured. The integral precision requirement of the parts is high.
In the process of implementing the embodiment of the invention, the inventor finds that at least the following defects exist in the background art:
when the composite surface is polished, the polished surface is small, and the polishing surface is often stressed unevenly, so that the problems of over-poor flatness, edge collapse, chromium leakage and the like are caused, and the processing difficulty is high during processing.
Disclosure of Invention
The invention provides a tool and a method for processing a composite surface of a metal matrix coated reflector, aiming at solving the problems that the flatness is over-poor, the edge is collapsed, chromium is leaked and the like caused by the fact that a polished surface is small and the stress is often uneven during polishing when the composite surface is polished, and the difficulty in processing is high.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
compound face processing frock of metal matrix cladding material reflector includes:
a body;
grinding the surface to be ground together with the surface of the product to be ground;
the grinding surface is a surface of the body, and a containing cavity is formed in the body and extends from the middle position of the grinding surface to the inside of the body.
The clamping part is connected with the body, and the clamping end of the clamping part is positioned in the accommodating cavity.
The accommodating cavity is a through hole.
When the cross section of the accommodating cavity is polygonal, an arc-shaped groove is formed outside an included angle of the accommodating cavity.
The processing method of the composite surface of the metal matrix coating reflector comprises the following steps:
and 2, grinding the surface to be processed and the grinding surface simultaneously.
After the step 1, the method further comprises the following steps:
and filling paraffin between the product to be processed and the processing tool.
step a, rounding the peripheral edges of the metal substrate;
and b, obtaining a product to be processed by adopting the current plating layer.
The step a further comprises the following steps:
step x, integrally heat-treating the metal matrix to integrally temper HRC40-HRC45, and then locally quenching HRC52-HRC55 in the surface area to be processed.
The step 2 is followed by:
and 3, protecting the ground surface of the product to be processed after grinding by using a protective layer, wherein the protective layer is quartz glass high-crystalline transparent plastic or crystalline high polymer.
The step 3 is followed by:
and 4, pasting a masking paper adhesive tape on the outer area of the protective layer of the product to be processed.
The invention has the beneficial effect that the special tool for optical polishing is designed. The polishing machine not only solves the problems of out-of-flatness, edge collapse, chromium leakage and the like caused by uneven stress during polishing due to a small polishing surface, but also reduces the operation difficulty.
Drawings
FIG. 1 is a top view of a metal substrate coated mirror composite surface processing tool of the present invention;
FIG. 2 is a sectional view of the tool for processing a composite surface of a metal-based coated mirror according to the present invention;
FIG. 3 is a side view of the tool for machining a composite surface of a metal-coated mirror according to the present invention;
FIG. 4 is a side view of the product to be processed in the present invention;
FIG. 5 is a side cross-sectional view of a product to be processed in the present invention;
labeled as: 1. grinding the surface; 2. an arc-shaped slot; 3. an accommodating chamber; 4. a product to be processed; 5. a gap; 6. a clamping part 7, a surface to be processed.
Detailed Description
It should be noted that, in the embodiments of the present invention, the terms referred to are:
the product to be processed is the product which needs to carry out mirror surface grinding on the coating area after the electroplating coating is carried out.
The surface 7 to be processed is a surface which needs to be ground into a reflecting surface after being electroplated.
The processing scheme of the metal matrix coated mirror composite surface provided by the embodiment of the invention will be described in detail through several specific embodiments.
Example 1
Referring to fig. 1 to 5, there are shown overall structural diagrams of the tool for processing a coated metal mirror composite surface according to the present invention, the tool for processing a coated metal mirror composite surface is characterized by comprising:
a body;
a grinding surface 1, wherein the grinding surface 1 is used for grinding together with a surface to be ground of a product;
the grinding surface 1 is a surface of the body on which a receiving cavity extends from a central position of the grinding surface 1 into the body.
In the above embodiment, the inventor considers that when a composite surface is polished, due to the fact that the polished surface is small, the polishing surface is often stressed unevenly, and problems of flatness out-of-tolerance, edge collapse, chromium leakage and the like are caused.
During machining, the product is installed on a machining tool for the composite surface of the metal matrix coated reflector, the surface to be ground of the product is installed at a position flush with the grinding surface 1, and during grinding, the tool is used as a consumable, and the grinding amount of the consumable is the same as the grinding amount of the product.
In general, during grinding, only the surface to be ground of a product is ground, and the surface to be ground of the product is a coating, so that the grinding is difficult to control due to the thin and soft nature of the coating, and the coating can be damaged due to slight deviation.
When the inventor solves the problem, the inventor introduces a method of grinding the tool at the same time, and the hardness of the tool is hard, so that the grinding is slower during the grinding, the contact area of the grinding surface 1 of the tool and the grinding machine is further increased, and the increase of the area makes the surface of the product more stable when the product is contacted with the grinding machine. Therefore, the problems of flatness out-of-tolerance, edge collapse, chromium leakage and the like caused by uneven stress during polishing due to a small polishing surface are solved, and the operation difficulty is reduced.
Example 2
Further, referring to fig. 2, another embodiment of the tool for processing the composite surface of the metal-coated mirror of the invention further includes a clamping portion 6, the clamping portion 6 is connected to the body, and a clamping end of the clamping portion 6 is located in the accommodating cavity.
In the above embodiment, the pre-tightening clamping part (6) is provided with an adjusting screw connected with the body, and the clamping end of the clamping part (6) can finely adjust the position gap between the workpiece and the accommodating cavity, so that the product 4 to be processed is relatively fixed in the accommodating cavity 3, and accurate grinding is performed.
Example 3
Further, referring to fig. 2 and 3, in another embodiment of the tool for processing the composite surface of the metal-coated mirror according to the present invention, the accommodating cavity is a through hole.
In the above embodiment, since the grinding surface 1 of the main body is continuously ground, the length of the main body is reduced with time, and the accommodating cavity is formed in a through hole shape, so that the service time of the tool for processing the metal matrix plated mirror composite surface can be prolonged.
Example 4
Further, referring to fig. 1, in another embodiment of the tool for processing a composite surface of a metal-coated mirror according to the present invention, when the cross section of the accommodating cavity is polygonal, an arc-shaped groove 2 is disposed outside an included angle of the accommodating cavity.
In the above embodiment, the cross section that holds the chamber is the polygon, because contained angle department is comparatively narrow, when will treating in the product 4 of processing installs the frock, not good installation, consequently will hold the contained angle expansion in chamber, can be easy to assemble treat that the product 4 of processing installs in the frock.
Example 5
In one embodiment of the method for processing a coated mirror composite surface of a metal substrate of the present invention, the method for processing a coated mirror composite surface of a metal substrate comprises:
and 2, grinding the surface to be processed and the grinding surface simultaneously.
In the above embodiment, during machining, a workpiece that can be ground is fitted to the workpiece 4 to be machined, and the surface 7 to be machined of the workpiece to be machined is mounted on the grinding surface on which the workpiece can be ground, so that the surface 7 to be machined is flush with the grinding surface, and the workpiece that can be ground is used as a consumable part, and the grinding amount of the workpiece that can be ground is the same as the grinding amount of the product.
In general, during grinding, only the surface to be ground of a product is ground, and the surface to be ground of the product is a coating, so that the grinding is difficult to control due to the thin and soft nature of the coating, and the coating can be damaged due to slight deviation.
When the inventor solves the problem, the inventor introduces a method of grinding the tool at the same time, and the hardness of the tool is hard, so that the grinding is slower during the grinding, the contact area of the grinding surface 1 of the tool and the grinding machine is further increased, and the increase of the area makes the surface of the product more stable when the product is contacted with the grinding machine. Therefore, the problems of flatness out-of-tolerance, edge collapse, chromium leakage and the like caused by uneven stress during polishing due to a small polishing surface are solved, and the operation difficulty is reduced.
Example 6
Further, in another embodiment of the method for processing a composite surface of a metal-coated mirror according to the present invention, after the step 1, the method further includes:
and filling paraffin between the product to be processed and the processing tool.
In the above embodiment, after the product to be machined and the machining tool are installed, the middle part of the product to be machined and the machining tool have a gap, and the gap 5 may vibrate during grinding, or the corners of the surface to be ground may be separated due to the grinding effect, so that the grinding effect is affected, therefore, a buffering force between the product to be machined and the machining tool can be provided by filling the gap between the product to be machined and the machining tool with paraffin, and the gap 5 is filled with paraffin to play a role in fastening.
Example 7
Further, in another embodiment of the method for processing a composite surface of a metal-coated mirror of the present invention, before step 1, the method further includes:
step a, rounding the peripheral edges of the metal substrate;
and b, obtaining a product to be processed by adopting the current plating layer.
In the embodiment, the peripheral edges and corners of the metal base body are rounded, so that the conditions of electroplating layer accumulation and flanging after grinding can be improved. And simultaneously, the point discharge effect is reduced for the electroplating process.
And (3) obtaining a product to be processed after plating a coating by adopting current, and then grinding the coating according to supply and demand.
Preferably, the plating layer is 60 to 70 microns.
Example 8
Further, in another embodiment of the method for processing a composite surface of a metal-coated mirror, before step a, the method further includes:
step x, integrally heat-treating the metal matrix to integrally temper HRC40-HRC45, and then locally quenching HRC52-HRC55 in the area of the surface 7 to be processed.
In the above examples, the heat treatment was carried out to temper HRC40-HRC45 in bulk and then to quench HRC52-HRC55 in part. Before heat treatment, the minor part of the part is machined in place.
Example 9
Further, in another embodiment of the method for processing a composite surface of a metal-coated mirror of the present invention, after the step 2, the method further includes:
and 3, protecting the ground surface of the product to be processed after grinding by using a protective layer, wherein the protective layer is quartz glass high-crystalline transparent plastic or crystalline high polymer.
In the above embodiment, during the sand blasting and the phosphorization, the chromium layer is protected by the acid-resistant and high-temperature-resistant quartz glass high-crystalline transparent plastic or crystalline high polymer, and the solution which does not corrode the chromium layer is used for acid washing to ensure the quality of the phosphorization.
Example 10
Further, in another embodiment of the method for processing a composite surface of a metal-coated mirror of the present invention, after step 3, the method further includes:
and 4, pasting a masking paper adhesive tape on the outer area of the protective layer of the product to be processed.
In the above embodiment, the masking tape is used, which can be distinguished from the plating layer region and can further protect the plating layer region.
Example 11
In the production drawing, due to the requirement of the use environment, a composite light-reflecting surface part with chromium plating of a metal matrix and optical technical requirements is often required, optical polishing processing is required in mechanical processing, and a certain chromium layer thickness is required to be ensured. The integral precision requirement of the parts is high, and particularly the processing before and after the chromium plating of the composite angle polishing surface is carried out. The problems of poor imaging quality and the like are caused by rough coating edge, chromium leakage, edge collapse, uneven chromium layer thickness, and over-poor flatness of the reflecting surface of the compound angle due to serious discharge of the tip of the workpiece. In the processing, the specialties of machining, optics and surface finishing lamps are involved, the mutual connection must be proper, and a practical and reasonable processing method, a special tool and reasonable processing parameters are made to solve the processing difficulty of the surface finishing lamps. In addition to the machining method, the used tooling comprises the following steps: the composite angle polishing reference surface of the body is used as a calibration reference surface of the composite angle polishing surface of the part, the part is fixed by paraffin after being arranged in a cavity in the middle of the body, and the workpiece and the calibration reference surface of the body are finely adjusted in place before the paraffin is solidified for polishing. The polishing machine solves the problems of poor flatness, edge collapse, chromium leakage, uneven chromium layer thickness and the like caused by difficult clamping and positioning of the workpiece due to the fact that the polishing surface is small and is influenced by factors such as the shape of the workpiece, a compound angle and the like and uneven stress during polishing of the compound surface. And also reduces the difficulty of the polishing operation.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the present embodiment are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.
In addition, descriptions related to "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Technical solutions between various embodiments may be combined with each other, but must be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (10)
1. Compound face processing frock of metal matrix cladding material reflector, its characterized in that includes:
a body;
a grinding surface (1), the grinding surface (1) being intended to be ground together with the surface of a product to be ground;
the grinding surface (1) is a surface of the body, and a containing cavity is formed in the body and extends from the middle position of the grinding surface (1) to the inside of the body.
2. The tool for machining the composite surface of the metal matrix coated reflective mirror as claimed in claim 1, further comprising a clamping portion (6), wherein the clamping portion (6) is connected with the body, and a clamping end of the clamping portion (6) is located in the accommodating cavity.
3. The tool for machining the composite surface of the metal matrix coated mirror as claimed in claim 1, wherein the accommodating cavity is a through hole.
4. The tool for machining the composite surface of the metal matrix coated reflective mirror as claimed in claim 1, wherein when the cross section of the accommodating cavity is polygonal, an arc-shaped groove (2) is formed outside an included angle of the accommodating cavity.
5. The method for processing the composite surface of the metal matrix coating reflector is characterized by comprising the following steps of:
step 1, mounting a surface to be processed of a product to be processed in the middle of a grinding surface of a processing tool, and enabling the surface to be processed to be flush with the grinding surface;
and 2, grinding the surface to be processed and the grinding surface simultaneously.
6. The method of processing a metal matrix coated mirror composite as claimed in claim 5, wherein after step 1, the method further comprises:
and filling and fastening between the product to be processed and the processing tool by using paraffin.
7. The method of processing a metal matrix coated mirror composite as claimed in claim 5, wherein step 1 is preceded by the steps of:
step a, rounding the peripheral edges of the metal substrate;
and b, obtaining a product to be processed by adopting the current plating layer.
8. The method of processing a metal matrix coated mirror composite as claimed in claim 7, wherein step a is preceded by the steps of:
step x, integrally heat-treating the metal matrix to integrally temper HRC40-HRC45, and then locally quenching HRC52-HRC55 in the surface area to be processed.
9. The method of processing a metal matrix coated mirror composite as claimed in claim 5, wherein step 2 is followed by the steps of:
and 3, protecting the ground surface of the product to be processed after grinding by using a protective layer, wherein the protective layer is quartz glass high-crystalline transparent plastic or crystalline high polymer.
10. The method of processing a metal matrix coated mirror composite as claimed in claim 8, wherein step 3 is followed by the steps of:
and 4, pasting a masking paper adhesive tape on the outer area of the protective layer of the product to be processed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911393032.1A CN111002194B (en) | 2019-12-30 | 2019-12-30 | Tool and method for processing composite surface of metal matrix coating reflective mirror |
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| CN201911393032.1A CN111002194B (en) | 2019-12-30 | 2019-12-30 | Tool and method for processing composite surface of metal matrix coating reflective mirror |
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| CN111002194A true CN111002194A (en) | 2020-04-14 |
| CN111002194B CN111002194B (en) | 2022-07-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114012511A (en) * | 2021-09-30 | 2022-02-08 | 中国航空工业集团公司洛阳电光设备研究所 | Titanium alloy nickel-plated reflector and low-stress polishing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114012511A (en) * | 2021-09-30 | 2022-02-08 | 中国航空工业集团公司洛阳电光设备研究所 | Titanium alloy nickel-plated reflector and low-stress polishing method thereof |
| CN114012511B (en) * | 2021-09-30 | 2023-09-19 | 中国航空工业集团公司洛阳电光设备研究所 | Titanium alloy nickel plating reflecting mirror and low-stress polishing method thereof |
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| CN111002194B (en) | 2022-07-05 |
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