CN109434373B - Gear and carrier pressing process and tool - Google Patents
Gear and carrier pressing process and tool Download PDFInfo
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- CN109434373B CN109434373B CN201811368508.1A CN201811368508A CN109434373B CN 109434373 B CN109434373 B CN 109434373B CN 201811368508 A CN201811368508 A CN 201811368508A CN 109434373 B CN109434373 B CN 109434373B
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- carrier
- gear
- positioning guide
- guide rod
- positioning
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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
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
Abstract
The invention belongs to the field of machining, and relates to a gear and carrier pressing process and a tool, wherein the tool comprises a clamp seat, a first positioning guide rod, a second positioning guide rod, a V-shaped clamp seat, a locking plate, a positioning guide plate, a positioning pressing block and a pressing sleeve; the first positioning guide rod and the second positioning guide rod are respectively and vertically arranged on the clamp seat; the V-shaped clamping seat is arranged between the first positioning guide rod and the second positioning guide rod; the first positioning guide rod, the V-shaped clamping seat and the second positioning guide rod are positioned on the same axis; the locking plate is arranged at the V-shaped opening of the V-shaped clamping seat and forms a carrier accommodating cavity with the V-shaped clamping seat; the carrier is arranged in the carrier accommodating cavity through the positioning guide plate; the gear is arranged on the upper end surface of the carrier through a positioning pressing block; the gear is pressed into the carrier through the pressing sleeve. The invention provides a gear and carrier laminating process and tool, wherein a joint surface is seamless during laminating, components are not deformed, and the gear and carrier laminating yield can be improved.
Description
Technical Field
The invention belongs to the field of machining, and relates to a gear and carrier laminating process and tool.
Background
A certain type of booster pump gear and carrier assembly (figures 1, 2 and 3) belongs to a precision moving part, and because the structure of the gear and the carrier is complex, the two parts are combined to limit the position, the gear is pressed to be deflected when the gear is pressed, the joint surface of the two parts is not pasted with a gap, and the gear sinks into the inner cavity of the carrier due to overlarge pressure, the gear and the carrier assembly can not meet the requirement of a design drawing, so that the scrappage of the parts is large, and the quality of the parts and the delivery of products are seriously influenced.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a gear and carrier laminating process and tool, wherein a joint surface is seamless during laminating, components are not deformed, and the gear and carrier laminating qualification rate can be improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a gear and carrier pressing process is characterized in that: the pressing process of the gear and the carrier comprises the following steps:
1) polishing the periphery of the end surface of the excircle of the carrier and the periphery of the orifice of the gear;
2) cleaning oil stains on the gear and the carrier;
3) putting the gear into a metal box, and synchronously putting the gear and the metal box into a heating box for heating and insulating;
4) placing the carrier on a workbench and positioning the carrier;
5) coating butter on the excircle of the carrier;
6) taking out the gear from the heat preservation box, and aligning the boss on the gear to the groove of the carrier;
7) and starting the hydraulic machine, and rapidly pressing the gear into the carrier step by step until the end face of the gear is attached to the carrier.
In the step 1), oilstone and polishing paper are adopted to polish the excircle of the carrier and the periphery of the orifice of the gear.
In the step 3), the gear and the metal box are synchronously placed in a heating box to be heated to 300 ℃ and kept warm for 20 to 30 minutes.
In the step 7), the pressure of the hydraulic press is not more than 2.5 MP.
And 7), slowly pressing the gear into the carrier by the hydraulic machine until the end face of the gear is attached to the carrier, and maintaining the pressure of not more than 2.5MP for not less than 20 seconds.
The utility model provides a frock for realizing as above the pressfitting technology of gear and carrier which characterized in that: the tool comprises a clamp seat, a first positioning guide rod, a second positioning guide rod, a V-shaped clamp seat, a locking plate, a positioning guide plate, a positioning pressing block and a pressing sleeve; the first positioning guide rod and the second positioning guide rod are parallel and are respectively and vertically arranged on the clamp seat; the V-shaped clamping seat is arranged between the first positioning guide rod and the second positioning guide rod; the projection center of the first positioning guide rod on the fixture seat, the projection center of the V-shaped clamping seat on the fixture seat and the projection center of the second positioning guide rod on the fixture seat are on the same axis; the locking plate is arranged at the V-shaped opening of the V-shaped clamping seat and forms a carrier accommodating cavity with the V-shaped clamping seat; the positioning guide plate is matched with the first positioning guide rod and the second positioning guide rod; the positioning pressing block is matched with the first positioning guide rod and the second positioning guide rod; the carrier is arranged in the carrier accommodating cavity through the positioning guide plate; the gear is arranged on the upper end surface of the carrier through a positioning pressing block; the gear is pressed into the carrier through the pressing sleeve.
The positioning guide plate comprises a first clamping groove, a connecting piece and a second clamping groove; the first clamping groove is connected with the second clamping groove through a connecting piece and is coaxial with the second clamping groove; the first clamping groove is clamped in the first positioning guide rod; the second clamping groove is clamped in the second positioning guide rod; the connecting piece is clamped on the upper end face of the carrier.
The positioning pressing block comprises a first positioning clamping groove, a connecting disc and a second positioning clamping groove; the first positioning clamping groove is connected with the second positioning clamping groove through a connecting disc and is coaxial with the second positioning clamping groove; the first positioning clamping groove is clamped in the first positioning guide rod; the second positioning clamping groove is clamped in the second positioning guide rod; the lower surface of the connecting disc is clamped on the upper end surface of the carrier; the upper surface of the connecting disc is provided with a through hole and a boss positioning groove which radially penetrates through the through hole along the through hole; the inner diameter of the through hole is larger than the outer diameter of the gear; the boss of the gear is arranged in the boss positioning groove on the upper surface of the connecting disc.
The tool further comprises a fixed seat; the first positioning guide rod is arranged on the clamp seat through a fixed seat; the V-shaped clamping seat is propped against the end surface of the side part of the fixed seat; and the locking plate is provided with a locking nut.
The invention has the advantages that:
the invention provides a gear and carrier pressing process and a tool, which comprises the steps of polishing the periphery of the end face of the excircle of a carrier and the periphery of the orifice of the gear, cleaning the gear and oil stains on the carrier, putting the gear into a metal box, synchronously putting the gear in a heating box along with the metal box, heating and insulating the gear, putting the carrier on a workbench, positioning the carrier, coating grease on the excircle of the carrier, taking the gear out of the heating box, aligning a boss on the gear to the groove of the carrier, starting a hydraulic press, and rapidly pressing the gear into the carrier step by step until the end face of the gear is attached to the carrier. The invention heats the gear to 300 ℃, keeps the temperature for 20 to 30 minutes, utilizes a special tool, presses the gear on a hydraulic press by 2.5MP pressure until the gear is abutted, and keeps the pressure for 20 seconds, so that the binding surface of the gear and the carrier is seamless, and the part has no deformation. The V-shaped clamping seat is used for positioning and clamping parts, the positioning guide plate is used for adjusting the angular position of the carrier on the clamp, and the positioning pressing block is used for pressing the gear and positioning the gear so that the gear boss is aligned with the carrier groove and pressed into the carrier. The pressing sleeve is used for further pressing the gear after the pressing block is pressed, so that the joint surface of the gear and the carrier is tightly attached. The gear and carrier laminating process provided by the invention enables the joint surface to be seamless when the gear and the carrier are laminated, the assembly to be free of deformation, and the gear and carrier laminating qualification rate to be improved. The pressing process provided by the invention effectively solves the problem that a large number of parts are scrapped due to the pressing quality of the gear and the carrier, avoids the phenomena that the gear is pressed to be deviated, the joint surface of the two parts has a gap and the assembly deforms after pressing during pressing, improves the yield of the parts and ensures the quality of the parts.
Drawings
FIG. 1 is a schematic illustration of the construction of a thrust pump gear and carrier assembly of some type;
FIG. 2 is a schematic structural view of a carrier;
FIG. 3 is a schematic structural view of a gear;
FIG. 4 is a schematic view of a fixture used in the present invention;
FIG. 5 is a schematic top view of the structure of FIG. 4;
FIG. 6 is a schematic structural view of a positioning guide plate used in the present invention;
FIG. 7 is a schematic view of a briquette used in the present invention;
wherein:
1-a clamp seat; 2-a fixed seat; 3-a first positioning guide rod; 4-a second positioning guide rod; 5-V type cassette; 6-locking plate; 7-locking the nut; 8, positioning a guide plate; 81-a first card slot; 82-a second card slot; 9-positioning a pressing block; 91-a first locator card slot; 92-a second locator card slot; 93-boss positioning groove.
Detailed Description
The invention provides a gear and carrier laminating process, which comprises the following steps:
1) polishing the periphery of the end face of the excircle of the carrier and the periphery of the orifice of the gear by adopting oilstone and polishing paper;
2) cleaning oil stains on the gear and the carrier;
3) putting the gear into a metal box, and synchronously putting the gear and the metal box into a heating box for heating and insulating; preferably, the gear and the metal box are synchronously placed in a heating box to be heated to 300 ℃ and kept warm for 20 to 30 minutes;
4) placing the carrier on a workbench and positioning the carrier;
5) coating butter on the excircle of the carrier;
6) taking out the gear from the heat preservation box, and aligning the boss on the gear to the groove of the carrier;
7) starting a hydraulic machine, and rapidly pressing the gear into the carrier step by step until the end face of the gear is attached to the carrier; the pressure of the hydraulic press is not more than 2.5 MP; and slowly pressing the gear into the carrier by the hydraulic press until the end face of the gear is attached to the carrier, and maintaining the pressure of not more than 2.5MP for not less than 20 seconds.
Referring to fig. 4, 5, 6 and 7, the invention further provides a tooling for the above-mentioned gear and carrier laminating process, which comprises a fixture seat 1, a first positioning guide rod 3, a second positioning guide rod 4, a V-shaped clamping seat 5, a locking plate 6, a positioning guide plate 8, a positioning pressing block 9 and a pressing sleeve; the first positioning guide rod 3 and the second positioning guide rod 4 are parallel and are respectively and vertically arranged on the clamp seat 1; the V-shaped clamping seat 5 is arranged between the first positioning guide rod 3 and the second positioning guide rod 4; the projection center of the first positioning guide rod 3 on the fixture seat 1, the projection center of the V-shaped clamping seat 5 on the fixture seat 1 and the projection center of the second positioning guide rod 4 on the fixture seat 1 are on the same axis; the locking plate 6 is arranged at the V-shaped opening of the V-shaped clamping seat 5 and forms a carrier accommodating cavity with the V-shaped clamping seat 5; the positioning guide plate 8 is matched with the first positioning guide rod 3 and the second positioning guide rod 4; the positioning pressing block 9 is matched with the first positioning guide rod 3 and the second positioning guide rod 4; the carrier is arranged in the carrier accommodating cavity through the positioning guide plate 8; the gear is arranged on the upper end surface of the carrier through a positioning pressing block 9; the gear is pressed into the carrier through the pressing sleeve.
Wherein: the positioning guide plate 8 comprises a first clamping groove 81, a connecting piece and a second clamping groove 82; the first clamping groove 81 is connected with the second clamping groove 82 through a connecting piece and is coaxial with the second clamping groove 82; the first locking groove 81 is clamped in the first positioning guide rod 3; the second locking groove 82 is clamped in the second positioning guide rod 4; the connecting piece is clamped on the upper end surface of the carrier.
The positioning press block 9 comprises a first positioning clamping groove 91, a connecting disc and a second positioning clamping groove 92; the first positioning clamping groove 91 is connected with the second positioning clamping groove 92 through a connecting disc and is coaxial with the second positioning clamping groove 92; the first positioning clamping groove 91 is clamped in the first positioning guide rod 3; the second positioning clamping groove 92 is clamped in the second positioning guide rod 4; the lower surface of the connecting disc is clamped on the upper end surface of the carrier; the upper surface of the connecting disc is provided with a through hole and a boss positioning groove 93 which radially penetrates through the through hole along the through hole; the inner diameter of the through hole is larger than the outer diameter of the gear; the boss of the gear is placed in the boss positioning groove 93 on the upper surface of the connecting disc.
In addition, the tool provided by the invention further comprises a fixed seat 2; the first positioning guide rod 3 is arranged on the clamp seat 1 through the fixed seat 2; the V-shaped clamping seat 5 is propped against the end surface of the side part of the fixed seat 2; the locking plate 6 is provided with a locking nut 7.
The invention heats the gear to 300 ℃, keeps the temperature for 20 to 30 minutes, utilizes a special tool, presses the gear on a hydraulic press by 2.5MP pressure until the gear is abutted, and keeps the pressure for 20 seconds, so that the binding surface of the gear and the carrier is seamless, and the part has no deformation. The V-shaped clamping seat 5 is used for positioning a clamping part, the positioning guide plate 8 is used for adjusting the angular position of the carrier on the clamp, and the positioning pressing block 9 is used for pressing the gear and positioning the gear position, so that the gear boss is aligned with the carrier groove and pressed into the carrier. The pressing sleeve is used for further pressing the gear after the pressing block is pressed, so that the joint surface of the gear and the carrier is tightly attached. The gear and carrier laminating process provided by the invention enables the joint surface to be seamless when the gear and the carrier are laminated, the assembly to be free of deformation, and the gear and carrier laminating qualification rate to be improved.
When the tool provided by the invention is used for pressing the gear and the carrier, the specific mode is as follows:
1) and polishing the excircle of the carrier and the periphery of the opening of the gear by using oilstone and polishing paper to make the excircle smooth.
2) And oil stains on the gear and the carrier are cleaned, so that the two parts are clean.
3) The gear is placed in a metal box, the parts are placed in a heating box along with the metal box, the temperature is raised to 300 ℃, and the temperature is kept for 20 to 30 minutes. High temperature operation is carried out, and scalding is avoided.
4) And adjusting the pressure of the hydraulic press to 2.5MP at most in the gear heating process, and orderly placing all the tools on a workbench.
5) The carrier is arranged on the clamp, and the positioning guide plate 8 is guided by two cylindrical rods at the upper end of the clamp to be inserted into a groove on the excircle end face of the carrier so as to ensure the angular position of the carrier. The clamp plate is locked after the carrier is stably and reliably positioned.
6) And taking down the positioning guide plate 8, and coating a small amount of grease on the excircle of the carrier to reduce the frictional resistance in the pressing process.
7) The incubator is quickly opened, the insulated gear is taken out, and then the boss (figure 3) of the gear is quickly aligned with the pressing block positioning groove (figure 6) to be placed in the incubator.
8) And pressing the gear along with the pressing block into the position of the outer circle 1/3 to 1/2 length of the carrier by a hydraulic press quickly. The pressing block needs to be guided by two cylindrical rods at the upper end of the clamp.
9) And quickly taking down the pressing block, replacing a pressing sleeve, pressing the end face of the gear by using the pressure of 2.5MP until the gear abuts against the pressing sleeve, and keeping the pressure of 2.5MP for not less than 20 seconds.
10) And taking out the combined parts, visually arranging the gear boss in the carrier groove, and ensuring that the binding surfaces of the two parts are light-tight and the parts are not deformed.
The qualified rate of gear and carrier pressing reaches 100 percent. The pressing process is applied to the processing of batch parts. By applying the pressing method, the problem that a large number of parts are scrapped due to the pressing quality of the gear and the carrier is effectively solved, the phenomena that the gear is pressed to be deviated, the joint surface of the two parts has a gap and the assembly deforms after being pressed during pressing are avoided, the yield of the parts is improved, and the quality of the parts is ensured.
Claims (8)
1. A gear and carrier pressing process is characterized in that: the pressing process of the gear and the carrier comprises the following steps:
1) polishing the periphery of the end surface of the excircle of the carrier and the periphery of the orifice of the gear;
2) cleaning oil stains on the gear and the carrier;
3) putting the gear into a metal box, and synchronously putting the gear and the metal box into a heating box for heating and insulating;
4) placing the carrier on a workbench and positioning the carrier through a tool; the tool comprises a clamp seat (1), a first positioning guide rod (3), a second positioning guide rod (4), a V-shaped clamp seat (5), a locking plate (6), a positioning guide plate (8), a positioning pressing block (9) and a pressing sleeve; the first positioning guide rod (3) and the second positioning guide rod (4) are parallel and are respectively and vertically arranged on the clamp seat (1); the V-shaped clamping seat (5) is arranged between the first positioning guide rod (3) and the second positioning guide rod (4); the projection center of the first positioning guide rod (3) on the fixture seat (1), the projection center of the V-shaped clamping seat (5) on the fixture seat (1) and the projection center of the second positioning guide rod (4) on the fixture seat (1) are on the same axis; the locking plate (6) is arranged at the V-shaped opening of the V-shaped clamping seat (5) and forms a carrier accommodating cavity with the V-shaped clamping seat (5); the positioning guide plate (8) is matched with the first positioning guide rod (3) and the second positioning guide rod (4); the positioning pressing block (9) is matched with the first positioning guide rod (3) and the second positioning guide rod (4); the carrier is arranged in the carrier accommodating cavity through a positioning guide plate (8); the gear is arranged on the upper end surface of the carrier through a positioning pressing block (9); the gear is pressed into the carrier through the pressing sleeve;
5) coating butter on the excircle of the carrier;
6) taking out the gear from the heat preservation box, and aligning the boss on the gear to the groove of the carrier;
7) starting a hydraulic machine, and rapidly pressing the gear into the carrier step by step until the end face of the gear is attached to the carrier; and slowly pressing the gear into the carrier by the hydraulic press until the end face of the gear is attached to the carrier, and maintaining the pressure of not more than 2.5MP for not less than 20 seconds.
2. A gear and carrier bonding process as claimed in claim 1, wherein: and in the step 1), polishing treatment is carried out on the excircle of the carrier and the periphery of the gear orifice by adopting oilstone and polishing paper.
3. A gear and carrier bonding process as claimed in claim 2, wherein: in the step 3), the gear and the metal box are synchronously placed in a heating box to be heated to 300 ℃ and kept warm for 20-30 minutes.
4. A gear and carrier bonding process according to claim 3, wherein: in the step 7), the pressure of the hydraulic press is not more than 2.5 MP.
5. A frock for realizing the gear and carrier laminating process of any claim 1-4, characterized in that: the tool comprises a clamp seat (1), a first positioning guide rod (3), a second positioning guide rod (4), a V-shaped clamp seat (5), a locking plate (6), a positioning guide plate (8), a positioning pressing block (9) and a pressing sleeve; the first positioning guide rod (3) and the second positioning guide rod (4) are parallel and are respectively and vertically arranged on the clamp seat (1); the V-shaped clamping seat (5) is arranged between the first positioning guide rod (3) and the second positioning guide rod (4); the projection center of the first positioning guide rod (3) on the fixture seat (1), the projection center of the V-shaped clamping seat (5) on the fixture seat (1) and the projection center of the second positioning guide rod (4) on the fixture seat (1) are on the same axis; the locking plate (6) is arranged at the V-shaped opening of the V-shaped clamping seat (5) and forms a carrier accommodating cavity with the V-shaped clamping seat (5); the positioning guide plate (8) is matched with the first positioning guide rod (3) and the second positioning guide rod (4); the positioning pressing block (9) is matched with the first positioning guide rod (3) and the second positioning guide rod (4); the carrier is arranged in the carrier accommodating cavity through a positioning guide plate (8); the gear is arranged on the upper end surface of the carrier through a positioning pressing block (9); the gear is pressed into the carrier through the pressing sleeve.
6. The tooling of claim 5, wherein: the positioning guide plate (8) comprises a first clamping groove (81), a connecting piece and a second clamping groove (82); the first clamping groove (81) is connected with the second clamping groove (82) through a connecting piece and is coaxial with the second clamping groove (82); the first clamping groove (81) is clamped in the first positioning guide rod (3); the second clamping groove (82) is clamped in the second positioning guide rod (4); the connecting piece is clamped on the upper end face of the carrier.
7. The tooling of claim 6, wherein: the positioning pressing block (9) comprises a first positioning clamping groove (91), a connecting disc and a second positioning clamping groove (92); the first positioning clamping groove (91) is connected with the second positioning clamping groove (92) through a connecting disc and is coaxial with the second positioning clamping groove (92); the first positioning clamping groove (91) is clamped in the first positioning guide rod (3); the second positioning clamping groove (92) is clamped in the second positioning guide rod (4); the lower surface of the connecting disc is clamped on the upper end surface of the carrier; the upper surface of the connecting disc is provided with a through hole and a boss positioning groove (93) which penetrates through the through hole along the radial direction of the through hole; the inner diameter of the through hole is larger than the outer diameter of the gear; the boss of the gear is placed in a boss positioning groove (93) on the upper surface of the connecting disc.
8. The tooling of claim 5, 6 or 7, wherein: the tool further comprises a fixed seat (2); the first positioning guide rod (3) is arranged on the clamp seat (1) through the fixed seat (2); the V-shaped clamping seat (5) is propped against the end face of the side part of the fixed seat (2); and the locking plate (6) is provided with a locking nut (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368508.1A CN109434373B (en) | 2018-11-16 | 2018-11-16 | Gear and carrier pressing process and tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368508.1A CN109434373B (en) | 2018-11-16 | 2018-11-16 | Gear and carrier pressing process and tool |
Publications (2)
| Publication Number | Publication Date |
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| CN109434373A CN109434373A (en) | 2019-03-08 |
| CN109434373B true CN109434373B (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811368508.1A Active CN109434373B (en) | 2018-11-16 | 2018-11-16 | Gear and carrier pressing process and tool |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203599902U (en) * | 2013-11-11 | 2014-05-21 | 福州钰龙轧辊铸造有限公司 | Clamp device used for roller keyseat |
| KR101474882B1 (en) * | 2014-10-27 | 2014-12-22 | 차순악 | The jig for a pin |
| CN104308512A (en) * | 2014-11-10 | 2015-01-28 | 南京金宇刀具制造有限公司 | Speed reducer driven gear press |
| CN205950336U (en) * | 2016-08-29 | 2017-02-15 | 江苏金石富源机械有限公司 | Valve body drilling processingequipment |
| CN108500662A (en) * | 2017-02-27 | 2018-09-07 | 湖南新辉凡智能科技有限公司 | A kind of revolving parts clamp for machining |
| CN206588645U (en) * | 2017-04-06 | 2017-10-27 | 安徽诚业汽车零部件有限公司 | A kind of slabbing system of processing of automobile front brake wheel cylinder |
| CN207771341U (en) * | 2018-01-17 | 2018-08-28 | 常州优谷新能源科技股份有限公司 | A kind of axial workpiece drilling and milling positioning device |
| CN108817847A (en) * | 2018-06-06 | 2018-11-16 | 浙江大学昆山创新中心 | A kind of assembly method of flexible bearing and cam |
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