CN112780526B - Easily-machined piston for refrigerator compressor and manufacturing process thereof - Google Patents
Easily-machined piston for refrigerator compressor and manufacturing process thereof Download PDFInfo
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- CN112780526B CN112780526B CN202011619191.1A CN202011619191A CN112780526B CN 112780526 B CN112780526 B CN 112780526B CN 202011619191 A CN202011619191 A CN 202011619191A CN 112780526 B CN112780526 B CN 112780526B
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- piston
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- oil
- tempering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
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- 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
- B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0284—Constructional details, e.g. reservoirs in the casing
- F04B39/0292—Lubrication of pistons or cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/14—Provisions for readily assembling or disassembling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses an easily-machined piston for a refrigerator compressor, which comprises a piston main body, wherein two ends of the piston main body are respectively a working end and a transmission end, the working end is provided with an oil seal groove and an oil storage groove, the end surface of the working end is streamline, the transmission end is provided with a notch and a shaft hole, and is provided with a shaft fitting.
Description
Technical Field
The invention relates to the technical field of production and processing of refrigerator accessories, in particular to an easily-processed piston for a refrigerator compressor and a manufacturing process thereof.
Background
The piston is a reciprocating movement machine member, is often used in internal combustion engines and compressors, and is an indispensable component of a refrigerator compressor.
The common compressor piston often has the defect of poor air tightness, the working efficiency is relatively low, and the production efficiency of the conventional production process is not high, so that the task requirement of mass production is not met.
Therefore, in order to improve the working efficiency of the compressor piston and the energy efficiency of the compressor, the piston needs to be improved, and meanwhile, the manufacturing process is optimized in a targeted mode, and the production cost is saved.
Disclosure of Invention
Aiming at the problems, the invention discloses an easily-machined piston for a refrigerator compressor and a manufacturing process thereof.
The specific technical scheme is as follows:
the utility model provides an workable piston for refrigerator compressor, its characterized in that, includes the piston main part, the one end of piston main part is work end, the other end is the transmission end, the terminal surface of work end is streamlined, transmission end cavity, and the tip opening, set up symmetrical notch and shaft hole on the outer wall of transmission end, be provided with 4 stoppers that are circumference and set up in the transmission end.
The piston easy to machine for the refrigerator compressor is characterized in that the piston main body is in a stepped cylindrical shape.
The piston easy to machine for the refrigerator compressor is characterized in that the center of the end face of the streamline working end is provided with a spherical protrusion, a circle of annular groove is formed along the periphery of the spherical protrusion, the cross section of the groove is arc-shaped, and the arc-shaped groove is tangent to the spherical protrusion.
Foretell refrigerator compressor is with workable piston, wherein, be provided with oil blanket groove and oil storage tank on the outer wall of work end, the oil blanket groove is ring shape end to end, and quantity is many, and equidistant setting between many oil blanket grooves, the oil blanket groove sets up in oil storage tank one side, and is ring shape end to end.
The above-mentioned refrigerator compressor is with workable piston, wherein, the cross-section of oil blanket groove is trapezoidal, the cross-section of oil storage tank is triangle-shaped, and the triangle-shaped angle department that it is with fillet transition.
The easily-machined piston for the refrigerator compressor is characterized in that a shaft fitting for connecting a piston connecting rod and a limiting plate for limiting the installation position of the shaft fitting are arranged at the notch and the shaft hole, and the limiting plate extends towards the inner sides of the notch and the shaft hole;
the shaft fitting is matched with the shape of the notch and the shaft hole, is tightly attached to the limiting plate to be installed, and is fixedly connected with the piston main body through the key pin, and one end of the shaft fitting is fixedly provided with the bearing.
The manufacturing process of the piston easy to machine for the refrigerator compressor is characterized by comprising the following specific processes:
s1, blanking: carrying out laser cutting on the metal bar material according to the specification of the piston to obtain a cylindrical metal bar material;
s2, material rod processing: sequentially carrying out pre-cooling treatment, heat treatment, barrel punching and heat treatment on the metal material rod;
s3, primary machining: carrying out first machining on the metal material rod subjected to material rod processing, milling the metal material rod into a stepped cylinder according to specifications, milling a working end to enable the end face of the working end to be flat, milling a transmission end to enable the transmission end to be hollow and hollow, and obtaining a piston cylinder;
s4, secondary machining: performing secondary machining on the piston cylinder after primary machining, performing end milling on a working end to display grooves and spherical protrusions, then sequentially milling an oil storage groove and an oil seal groove, and finally processing a notch, a shaft hole and a limiting plate;
s5, welding a limiting block and processing a shaft accessory: cutting the metal material according to the shape specification to obtain a limiting block base material and a shaft accessory sheet material; after polishing and shot blasting are carried out on the base material of the limiting block, laser is welded in the transmission end, after polishing and shot blasting are carried out on the sheet material of the shaft accessory, heat treatment is carried out, and after the heat treatment is finished, the bearing is oil-washed and assembled;
s6, chamfering and heat treatment again: and (3) chamfering the piston welded by the limiting block, performing shot blasting and blow washing after chamfering, then performing heat treatment, performing oil washing after heat treatment is finished, and obtaining a finished piston product after the oil washing is finished.
The manufacturing process of the easy-to-machine piston for the refrigerator compressor comprises the steps of preheating, vacuum quenching and tempering in the heat treatment steps S2 and S6; specifically, preheating is carried out at the heating rate of 50 ℃/Min until the temperature reaches 500 ℃, and the temperature is kept for 30 Min; then, turning to vacuum quenching, and heating to 880-940 ℃ within 5 minutes; and finally, tempering, slowly cooling to 380-420 ℃, and controlling the tempering time to be 40-50 Min.
The manufacturing process of the easy-to-machine piston for the refrigerator compressor comprises the steps of preheating, vacuum quenching and tempering in the heat treatment step S5; specifically, preheating is carried out at the heating rate of 50 ℃/Min until the temperature reaches 400 ℃, and the temperature is kept for 20 Min; then, turning to vacuum quenching, and heating to 650-750 ℃ within 5 minutes; and finally, tempering, slowly cooling to 300-350 ℃, and controlling the tempering time to be 40-50 Min.
In the manufacturing process of the piston easy to machine for the refrigerator compressor, the metal bar material in the step S1 and the metal material in the step S5 are made of the same material.
The invention has the beneficial effects that:
the invention discloses an easily-machined piston for a refrigerator compressor, which comprises a piston main body, wherein two ends of the piston main body are respectively a working end and a transmission end, the working end is provided with an oil seal groove and an oil storage groove, the end surface of the working end is streamline, the transmission end is provided with a notch and a shaft hole, and is provided with a shaft fitting.
Drawings
FIG. 1 is a schematic view of the present invention.
Fig. 2 is a side view of the present invention.
FIG. 3 is a cross-sectional view of the present invention.
Detailed Description
In order to make the technical solution of the present invention clearer and clearer, the present invention is further described below with reference to embodiments, and any solution obtained by substituting technical features of the technical solution of the present invention with equivalents and performing conventional reasoning falls within the scope of the present invention.
Example one
The piston easy to machine for the refrigerator compressor is characterized by comprising a piston main body 1, wherein one end of the piston main body 1 is a working end 2, the other end of the piston main body is a transmission end 3, the end face of the working end 2 is streamline, the transmission end 3 is hollow and is open at the end part, symmetrical notches 4 and shaft holes 5 are formed in the outer wall of the transmission end 3, and 4 limiting blocks 6 which are circumferentially arranged are arranged in the transmission end 3;
wherein, the piston main part 1 is the cylindrical of echelonment, is streamlined the terminal surface center of work end 2 sets up spherical protrusion 7, and is provided with the annular recess 8 of round ring along spherical protrusion 7 periphery, the cross-section of recess 8 is arc, and the arc that is tangent with spherical protrusion 7, be provided with oil seal groove 9 and oil storage tank 10 on the outer wall of work end 2, oil seal groove 9 is ring shape end to end, and quantity is many, and equidistant setting between many oil seal grooves 9, oil seal groove 9 sets up in oil storage tank 10 one side, and is ring shape end to end, the cross-section of oil seal groove 9 is trapezoidal, the cross-section of oil storage tank 10 is triangle-shaped, and the triangle-shaped angle department that it is with fillet transition, notch 4 and shaft hole 5 department are provided with the axle accessory 11 that is used for connecting the piston rod and the limiting plate 12 that is used for restricting axle accessory 11 mounted position, the limiting plate 12 extends towards the inner sides of the notch 4 and the shaft hole 5; the shaft fitting 11 is matched with the shapes of the notch 4 and the shaft hole 5, is tightly attached to the limiting plate 12 for installation, and is fixedly connected with the piston main body 1 through a key pin, and one end of the shaft fitting 11 is fixedly provided with a bearing 13;
the embodiment discloses a piston for a refrigerator compressor, which is simple in structure, the working end adopts a streamline design, the working efficiency of the piston can be effectively improved, an oil seal groove and an oil storage groove have the characteristic of improving the air tightness of the piston, and meanwhile, the piston is matched with shaft fittings to participate in the assembly of the compressor, so that the piston has the characteristics of simplicity in installation and convenience in maintenance, and the maintenance and replacement cost can be greatly reduced.
Example two
The manufacturing process of the piston easy to machine for the refrigerator compressor is characterized by comprising the following specific processes:
s1, blanking: carrying out laser cutting on the metal bar material according to the specification of the piston to obtain a cylindrical metal bar material;
s2, material rod processing: sequentially carrying out pre-cooling treatment, heat treatment, barrel punching and heat treatment on the metal material rod;
s3, primary machining: carrying out first machining on the metal material rod subjected to material rod processing, milling the metal material rod into a stepped cylinder according to specifications, milling a working end to enable the end face of the working end to be flat, milling a transmission end to enable the transmission end to be hollow and hollow, and obtaining a piston cylinder;
s4, secondary machining: performing secondary machining on the piston cylinder after primary machining, performing end milling on a working end to display grooves and spherical protrusions, then sequentially milling an oil storage groove and an oil seal groove, and finally processing a notch, a shaft hole and a limiting plate;
s5, welding a limiting block and processing a shaft accessory: cutting the metal material according to the shape specification to obtain a limiting block base material and a shaft accessory sheet material; after polishing and shot blasting are carried out on the base material of the limiting block, laser is welded in the transmission end, after polishing and shot blasting are carried out on the sheet material of the shaft accessory, heat treatment is carried out, and after the heat treatment is finished, the bearing is oil-washed and assembled;
s6, chamfering and heat treatment again: chamfering the piston welded by the limiting block, performing shot blasting and blow washing after chamfering, then performing heat treatment, performing oil washing after heat treatment is completed, and obtaining a piston finished product after the oil washing is completed;
wherein the heat treatment of steps S2 and S6 comprises preheating, vacuum quenching and tempering treatment; specifically, preheating is carried out at the heating rate of 50 ℃/Min until the temperature reaches 500 ℃, and the temperature is kept for 30 Min; then, turning to vacuum quenching, and heating to 880-940 ℃ within 5 minutes; finally, tempering, slowly cooling to 380-420 ℃, controlling the tempering time to be 40-50 Min, and performing heat treatment including preheating, vacuum quenching and tempering in the step S5; specifically, preheating is carried out at the heating rate of 50 ℃/Min until the temperature reaches 400 ℃, and the temperature is kept for 20 Min; then, turning to vacuum quenching, and heating to 650-750 ℃ within 5 minutes; finally, tempering, slowly cooling to 300-350 ℃, controlling the tempering time to be 40-50 Min, wherein the metal bar material in the step S1 and the metal material in the step S5 are made of the same material;
the manufacturing process of the embodiment is used for producing the piston of one part of the embodiment, is simple in process and reasonable in design, simplifies the production of the piston, improves the production efficiency, effectively improves the structural strength of a piston product, and optimizes the working performance of the piston.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The piston easy to machine for the refrigerator compressor is characterized by comprising a piston main body, wherein one end of the piston main body is a working end, the other end of the piston main body is a transmission end, the end face of the working end is streamline, the transmission end is hollow and is provided with an opening at the end part, symmetrical notches and shaft holes are formed in the outer wall of the transmission end, and 4 limiting blocks which are circumferentially arranged are arranged in the transmission end;
the piston main body is in a stepped cylindrical shape, a spherical protrusion is arranged in the center of the end face of the streamline working end, a circle of circular groove is arranged along the periphery of the spherical protrusion, the cross section of the groove is in a circular arc shape, the circular arc shape is tangent to the spherical protrusion, an oil seal groove and an oil storage groove are arranged on the outer wall of the working end, the oil seal grooves are in circular end-to-end connection and are arranged at equal intervals, the oil seal grooves are arranged on one side of the oil storage groove and are in circular end-to-end connection, the cross section of each oil seal groove is in a trapezoid shape, the cross section of each oil storage groove is in a triangle shape, and the corners of the triangle are in fillet transition;
the notch and the shaft hole are provided with a shaft fitting for connecting the piston connecting rod and a limiting plate for limiting the installation position of the shaft fitting, and the limiting plate extends towards the inner sides of the notch and the shaft hole;
the shaft fitting is matched with the shape of the notch and the shaft hole, is tightly attached to the limiting plate to be installed, and is fixedly connected with the piston main body through the key pin, and one end of the shaft fitting is fixedly provided with the bearing.
2. A process for manufacturing a piston easy to machine for a compressor of a refrigerator according to claim 1, comprising the following specific processes:
s1, blanking: carrying out laser cutting on the metal bar material according to the specification of the piston to obtain a cylindrical metal bar material;
s2, material rod processing: sequentially carrying out pre-cooling treatment, heat treatment, barrel punching and heat treatment on the metal material rod;
s3, primary machining: carrying out first machining on the metal material rod subjected to material rod processing, milling the metal material rod into a stepped cylinder according to specifications, milling a working end to enable the end face of the working end to be flat, milling a transmission end to enable the transmission end to be hollow and hollow, and obtaining a piston cylinder;
s4, secondary machining: performing secondary machining on the piston cylinder after primary machining, performing end milling on a working end to display grooves and spherical protrusions, then sequentially milling an oil storage groove and an oil seal groove, and finally processing a notch, a shaft hole and a limiting plate;
s5, welding a limiting block and processing a shaft accessory: cutting the metal material according to the shape specification to obtain a limiting block base material and a shaft accessory sheet material; after polishing and shot blasting are carried out on the base material of the limiting block, laser is welded in the transmission end, after polishing and shot blasting are carried out on the sheet material of the shaft accessory, heat treatment is carried out, and after the heat treatment is finished, the bearing is oil-washed and assembled;
s6, chamfering and heat treatment again: and (3) chamfering the piston welded by the limiting block, performing shot blasting and blow washing after chamfering, then performing heat treatment, performing oil washing after heat treatment is finished, and obtaining a finished piston product after the oil washing is finished.
3. The manufacturing process of the easy-to-machine piston for the compressor of the refrigerator as claimed in claim 2, wherein the heat treatment of the steps S2 and S6 includes preheating, vacuum quenching and tempering treatment; specifically, preheating is carried out at the heating rate of 50 ℃/Min until the temperature reaches 500 ℃, and the temperature is kept for 30 Min; then, turning to vacuum quenching, and heating to 880-940 ℃ within 5 minutes; and finally, tempering, slowly cooling to 380-420 ℃, and controlling the tempering time to be 40-50 Min.
4. The manufacturing process of the easy-to-machine piston for the compressor of the refrigerator as claimed in claim 3, wherein the heat treatment of the step S5 includes preheating, vacuum quenching and tempering treatment; specifically, preheating is carried out at the heating rate of 50 ℃/Min until the temperature reaches 400 ℃, and the temperature is kept for 20 Min; then, turning to vacuum quenching, and heating to 650-750 ℃ within 5 minutes; and finally, tempering, slowly cooling to 300-350 ℃, and controlling the tempering time to be 40-50 Min.
5. The manufacturing process of the easy-to-machine piston for the refrigerator compressor as claimed in claim 4, wherein the metal bar material of the step S1 is the same material as the metal bar material of the step S5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011619191.1A CN112780526B (en) | 2020-12-31 | 2020-12-31 | Easily-machined piston for refrigerator compressor and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011619191.1A CN112780526B (en) | 2020-12-31 | 2020-12-31 | Easily-machined piston for refrigerator compressor and manufacturing process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112780526A CN112780526A (en) | 2021-05-11 |
| CN112780526B true CN112780526B (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011619191.1A Active CN112780526B (en) | 2020-12-31 | 2020-12-31 | Easily-machined piston for refrigerator compressor and manufacturing process thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55148985A (en) * | 1979-05-09 | 1980-11-19 | Hitachi Ltd | Reciprocating compressor |
| CN203594572U (en) * | 2013-10-12 | 2014-05-14 | 合肥凌达压缩机有限公司 | Piston pin, piston and piston assembly of compressor |
| CN204344906U (en) * | 2014-12-03 | 2015-05-20 | 湘潭大学 | A kind of piston |
| CN107355366A (en) * | 2017-08-14 | 2017-11-17 | 丹阳市常盛机械有限公司 | Vehicle air compressor piston |
| CN108518287A (en) * | 2018-03-29 | 2018-09-11 | 天津中恒动力研究院有限公司 | Piston and engine assembly |
| CN207989264U (en) * | 2018-04-02 | 2018-10-19 | 扬州意得机械有限公司 | A kind of piston for refrigerator compressor |
| CN108953113A (en) * | 2018-08-17 | 2018-12-07 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of piston and the compressor using the piston |
-
2020
- 2020-12-31 CN CN202011619191.1A patent/CN112780526B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55148985A (en) * | 1979-05-09 | 1980-11-19 | Hitachi Ltd | Reciprocating compressor |
| CN203594572U (en) * | 2013-10-12 | 2014-05-14 | 合肥凌达压缩机有限公司 | Piston pin, piston and piston assembly of compressor |
| CN204344906U (en) * | 2014-12-03 | 2015-05-20 | 湘潭大学 | A kind of piston |
| CN107355366A (en) * | 2017-08-14 | 2017-11-17 | 丹阳市常盛机械有限公司 | Vehicle air compressor piston |
| CN108518287A (en) * | 2018-03-29 | 2018-09-11 | 天津中恒动力研究院有限公司 | Piston and engine assembly |
| CN207989264U (en) * | 2018-04-02 | 2018-10-19 | 扬州意得机械有限公司 | A kind of piston for refrigerator compressor |
| CN108953113A (en) * | 2018-08-17 | 2018-12-07 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of piston and the compressor using the piston |
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|---|---|
| CN112780526A (en) | 2021-05-11 |
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