CN113172406A - Simple precise positioning pin pressing device for shell - Google Patents
Simple precise positioning pin pressing device for shell Download PDFInfo
- Publication number
- CN113172406A CN113172406A CN202110443004.7A CN202110443004A CN113172406A CN 113172406 A CN113172406 A CN 113172406A CN 202110443004 A CN202110443004 A CN 202110443004A CN 113172406 A CN113172406 A CN 113172406A
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- pin
- hole
- shell
- guide sleeve
- cylindrical pin
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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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
- Automatic Assembly (AREA)
Abstract
The invention discloses a simple precise positioning pin pressing device for a shell, wherein a positioning plate is fixed on the surface of the shell, into which a cylindrical pin needs to be pressed, the middle position of the positioning plate is provided with 1 guide hole, a guide sleeve is fixedly clamped in the guide hole, a cylindrical pin penetrating hole penetrating through the top and the bottom of the guide sleeve is vertically arranged in the guide sleeve, an adjusting gasket is arranged on the top surface of the guide sleeve, a rod body of a pin penetrates through the adjusting gasket and then extends into the cylindrical pin penetrating hole, the cylindrical pin penetrating hole is over against a pin hole pressed into the cylindrical pin on the shell, and when the bottom surface of the top of the pin is in contact with the surface of the adjusting gasket, the distance between the bottom surface of the pin and the surface of the shell is equal to the length of an extending end of the cylindrical pin. The device is formed by combining a press-mounting mechanism and a positioning mechanism, can solve the problems of large operation difficulty of field workers, deflection of press-mounting of the cylindrical pin, damage and deformation of the cylindrical pin, poor consistency of the depth of the press-mounting pin, low processing efficiency and the like, can ensure the technical requirements of press-mounting of pins of shell parts, and meets the requirements of product quality and progress.
Description
Technical Field
The invention relates to a positioning pin pressing device, in particular to a simple precise positioning pin pressing device for a shell.
Background
When a complex shell assembly pin pressing process is carried out, the cylindrical pin is pressed into a shell pin hole according to process requirements, the length of the extending end (the distance L0 from the upper end face to the shell installation face) of the cylindrical pin is guaranteed to be 2-8 mm different, the distance tolerance range is +/-0.5 mm, the verticality between the cylindrical pin and the shell installation face is within 0.1mm, and the press-fitting requirement of a certain shell pin is shown in figure 7. The prior technical scheme is as shown in fig. 8, wherein a shell is arranged in the figure, a cylindrical pin is arranged in the figure, a pin pressing tool is a circular ring, the length of the extending end of the cylindrical pin is ensured through the thickness L of the circular ring, a circular ring hole d plays a guiding role, when the cylindrical pin is pressed and installed by adopting the tool, due to the fact that the circular ring is small, a guide hole d is too short and has no limiting function, the difficulty of holding the circular ring by a worker in a field operation is high, the worker can only observe the circular ring by naked eyes when aiming at a pin hole of the shell, the cylindrical pin cannot extend into a required depth once when being knocked, the cylindrical pin is easy to deflect, the verticality requirement cannot be ensured, the end face of the pin is easy to collide and deform after being knocked for many times, and finally the assembling process requirement cannot be ensured.
Disclosure of Invention
The invention aims to provide a simple and precise positioning pin pressing device for a shell. The device is formed by combining a press-mounting mechanism and a positioning mechanism, can solve the problems of large operation difficulty of field workers, deflection of press-mounting of the cylindrical pin, damage and deformation of the cylindrical pin, poor consistency of the depth of the press-mounting pin, low processing efficiency and the like, can ensure the technical requirements of press-mounting of pins of shell parts, and meets the requirements of product quality and progress.
The technical scheme of the invention is as follows: the utility model provides a simple and easy precision positioning pressure round pin device for casing, the fixed surface that the cylindric lock need be impressed at the casing has the locating plate, the locating plate intermediate position is equipped with 1 bullport, fixed card is gone into in the bullport has the guide pin bushing, vertically in the guide pin bushing be equipped with and link up its top, the cylindric lock of bottom is worn the hole, the adjustment packing ring has been placed to the guide pin top surface, the pole body of pin passes and stretches into to the cylindric lock after the adjustment packing ring and wears the hole in, the cylindric lock is worn the hole and is just to the round pin hole that the cylindric lock on the casing impressed, when pin top bottom surface and adjustment packing ring surface contact, the bottom surface of pin equals the end length that stretches out of cylindric lock apart from the distance on casing surface.
In the simple and easy precision positioning pin pressing device for the shell, the positioning plate is fixed on the shell through the first positioning pin and the second positioning pin.
In the simple and easy precise positioning pin pressing device for the shell, the cylindrical pin penetrating hole is 2 stepped concentric holes, the transition section of the 2 concentric holes is in a conical structure, and the pin is also in a stepped structure.
In the simple and easy precision positioning pressure round pin device for casing, the excircle concentricity of the top pressure round pin end of the excircle in the middle of the pin is less than or equal to 0.05mm, and the back chipping treatment is carried out on the joint of the head part of the pin and the excircle in the middle.
In the simple precise positioning pin pressing device for the shell, the concentricity of the large hole in the cylindrical pin penetrating hole of the guide sleeve to the small hole is less than or equal to 0.05mm, the planeness of the two end faces of the guide sleeve is less than or equal to 0.01mm, the large hole and the small hole of the guide sleeve are in clearance fit with the large excircle and the small excircle which are correspondingly matched with the pin, the fit clearance is 0-0.02 mm,
in the simple and easy precision positioning pressure round pin device for casing, the aperture that the cylindric lock wore the hole adopts clearance fit with the cylindric lock, and both cooperation clearances are 0 ~ 0.005 mm.
In the simple precise positioning pin pressing device for the shell, the excircle of the guide sleeve is in clearance fit with the guide hole of the positioning plate, the fit clearance between the excircle of the guide sleeve and the guide hole of the positioning plate is 0-0.02 mm, and the excircle center of the guide sleeve and the center of the guide hole of the positioning plate coincide with the center of the cylindrical pin.
In the aforesaid be used for simple and easy precision positioning pressure round pin device of casing, first locating pin and second locating pin and locating plate interference fit, the cooperation is tight and is 0.03 ~ 0.05mm, and locating hole clearance fit on first locating pin and the second locating pin and the casing, the fit clearance is 0.005 ~ 0.015 mm.
The invention has the beneficial effects that: compared with the prior art, the simple precise positioning pin pressing device is composed of the pin, the adjusting washer, the guide sleeve, the positioning plate, the first positioning pin and the second positioning pin, the center of the pin, the excircle center of the guide sleeve, the center of the guide hole of the positioning plate and the center of the cylindrical pin are coincided in the device through a precise positioning mode of two holes on one surface and an interference/clearance fit multi-guide mode, the cylindrical pin is prevented from deflecting when stressed, the verticality requirement is ensured, the lower end face of the pin is tightly attached to the upper end face of the cylindrical pin by knocking the pin, and the cylindrical pin pressing-in distance L meets the technological regulation requirement by controlling or changing the distances L1 and L2. Compared with the prior art, the knocking object does not need to directly act on the end surface of the cylindrical pin during knocking, so that the end surface of the cylindrical pin is prevented from being damaged and deformed. The invention also solves the problem of great operation difficulty of workers, is convenient to hold, does not use naked eyes for judgment in positioning, and greatly improves the processing efficiency while reliably ensuring the assembling requirement of the cylindrical pin.
Drawings
FIG. 1 is a schematic cross-sectional structural view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic structural view of a pin;
FIG. 4 is a schematic structural view of the guide sleeve;
FIG. 5 is a schematic view of the positioning plate;
FIG. 6 is a schematic illustration of the assembled relationship of the present invention;
FIG. 7 is a schematic illustration of a certain shell pinning process requirement;
fig. 8 is a schematic diagram of a prior art structure.
Reference numerals: the device comprises a shell 1, a pin 2, an adjusting washer 3, a guide sleeve 4, a positioning plate 5, a first positioning pin 6, a second positioning pin 7 and a cylindrical pin 8.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
The embodiment of the invention comprises the following steps: a simple precise positioning pin pressing device for a shell comprises a pin 2, an adjusting washer 3, a guide sleeve 4, a positioning plate 5, a first positioning pin 6, a second positioning pin 7 and other parts. The device can be expressed as a press-mounting mechanism and a positioning mechanism, wherein the press-mounting mechanism consists of a pin 2, an adjusting washer 3 and a guide sleeve 4; the positioning mechanism is composed of a positioning plate 5, a first positioning pin 6 and a second positioning pin 7. The concrete structure is that 1 needs the fixed surface of the cylindric lock 8 of impressing at casing 1 to have a locating plate 5, 5 intermediate positions of locating plate are equipped with 1 bullport, fixed card is gone into in this bullport has guide sleeve 4, vertically in the guide sleeve 4 be equipped with and link up its top, the cylindric lock of bottom is worn the hole, 1 adjustment packing ring 3 has been placed to the 4 top surfaces of guide sleeve, the pole body of pin 2 passes and stretches into to the cylindric lock after adjustment packing ring 3 and wears the hole, the cylindric lock is worn the hole and is just to the pin hole that the cylindric lock 8 on the casing 1 impresses, when pin 2 top bottom surface and 3 surface contact of adjustment packing ring, the bottom surface of pin 2 equals the length that stretches out of cylindric lock 8 apart from casing 1 surperficial distance.
The device is positioned through two positioning holes on the mounting surface of the shell 1, so that a positioning mechanism of the pin pressing device is tightly matched with the mounting surface of the shell 1 through a first positioning pin 6 and a second positioning pin 7, the press-fitting mechanism is matched with the positioning mechanism through a guide hole in a positioning plate 5, the pin 2 of the pin pressing mechanism is knocked to act on the upper end surface of the cylindrical pin 8 after accurate positioning, the cylindrical pin 8 is pressed into the shell 1, and the requirements of the length of the extending end and the verticality of the cylindrical pin 8 are met.
When the positioning plate is used, the positioning plate 5 is matched with the shell 1 through the first positioning pin 6 and the second positioning pin 7, the guide hole of the positioning plate 5 accurately positions the position of the cylindrical pin hole corresponding to the cylindrical pin 8 on the shell 1, the guide sleeve 4 is arranged in the guide hole of the positioning plate 5, the cylindrical pin 8 is arranged in the cylindrical pin penetrating hole of the guide sleeve 4, and finally the pin 2 sequentially penetrates the adjusting washer 3 and the guide sleeve 4. When the top of the pin 2 is knocked to ensure that the bottom end face of the pin cap is attached to the upper end face of the adjusting washer 3, the pressed cylindrical pin 8 reaches the correct depth specified by the technical specification. The adjusting washer 3 is a grouped washer and is replaced or manufactured according to the actual depth requirement.
In the device, when the adjusting washer 3 is not placed, the length L of the extending end of the cylindrical pin 8 is determined by the distance L2 from the lower end face of the pin 2 to the mounting surface of the shell 1 and the thickness L1 of the adjusting washer 3, theoretically L is L2, the length L of the extending end of the actual cylindrical pin 8 can be changed by replacing the adjusting washer 3 according to actual requirements, different depth requirements of different products are met, and the tool universality is improved.
The cylindrical pin penetrating hole is 2 stepped concentric holes, the transition section of the 2 concentric holes is of a conical structure, and the pin 2 is also of a stepped structure. The pin 2 and the guide sleeve 4 realize double guide of the press pin through two concentric holes, so that the cylindrical pin 8 is not biased.
For realizing accurate location, guarantee the precision size and satisfy the requirement, avoid cylindric lock 8 to be pressed partially, cooperation between each part needs to satisfy following requirement, and needs carry out special treatment to some positions:
the concentricity of the middle excircle of the pin 2 to the excircle of the top press pin end is less than or equal to 0.05mm, and the joint of the head of the pin 2 and the middle excircle is subjected to back chipping treatment.
The concentricity of the large hole in the hole for penetrating the cylindrical pin of the guide sleeve 4 to the small hole is less than or equal to 0.05mm, the planeness of the two end faces of the guide sleeve 4 is less than or equal to 0.01mm, the large hole and the small hole of the guide sleeve 4 are in clearance fit with the large excircle and the small excircle of the pin 2 which are correspondingly matched, the fit clearance is 0-0.02 mm,
the small hole of the cylindrical pin penetrating hole is in clearance fit with the cylindrical pin 8, and the fit clearance between the cylindrical pin and the cylindrical pin is 0-0.005 mm.
The excircle of the guide sleeve 4 is in clearance fit with the guide hole of the positioning plate 5, the fit clearance between the excircle of the guide sleeve 4 and the guide hole of the positioning plate 5 is 0-0.02 mm, and the excircle center of the guide sleeve 4 and the center of the guide hole of the positioning plate 5 coincide with the center of the cylindrical pin 8.
First locating pin 6 and second locating pin 7 and 5 interference fit of locating plate, the cooperation degree of tightness is 0.03 ~ 0.05mm, and first locating pin 6 and second locating pin 7 are 0.005 ~ 0.015mm with the locating hole clearance fit on the casing 1, and the fit clearance is.
In 22.8 months in 2017, when an engine No. XX-10B 30S10B-006 in a mainframe factory of our company carries out secondary assembly appearance inspection, a mounting seat (near a phi 8 mark) at one joint surface of a stress control shell and a stress shell of an XX-49A (14A0008S) nozzle stress regulator is found to have a crack, and the crack is determined to belong to a fatigue crack through inspection, and the reason is as follows: because the positioning pin at one position of the newly replaced stressing shell is biased, the local bulge near the positioning pin on the shell combining surface is about 0.28mm and exceeds the requirement of 0.03 planeness specified by a design drawing; when the product is assembled, the joint surfaces of the two shells are not well jointed, the mounting seat has larger prestress after being fastened, and fatigue cracks are generated under the action of hydraulic pressure of an engine, vibration load and the like.
After the reexamination, the pin press-fitting process of the product adopts the prior art, namely a simple circular ring auxiliary press-fitting mode.
After analysis and research, subsequent parts are pressed by the pin pressing device, so that the assembling requirements of the cylindrical pin are met, and similar faults do not occur after debugging of the host.
The invention is suitable for all shells needing to be assembled with pins, can be popularized and used in a large range, and has the advantages of low self-control cost, reliable object processing quality and high efficiency.
Claims (8)
1. The utility model provides a simple and easy precision positioning pressure round pin device for casing which characterized in that: the surface fixing that need impress cylindric lock (8) at casing (1) is equipped with locating plate (5), locating plate (5) intermediate position is equipped with 1 bullport, fixed card is gone into in the bullport has guide pin bushing (4), vertically be equipped with in guide pin bushing (4) and link up its top, the cylindric lock of bottom is worn the hole, adjustment packing ring (3) have been placed to guide pin bushing (4) top surface, the pole body of pin (2) passes and stretches into to the cylindric lock and wears the hole after adjustment packing ring (3), the cylindric lock is worn the hole and is just to the pin hole that cylindric lock (8) on casing (1) impressed, when pin (2) top bottom surface and adjustment packing ring (3) surface contact, the distance on the bottom surface of pin (2) is equal to the end length that stretches out of cylindric lock (8) from casing (1) surface.
2. The simple precision positioning press pin device for the shell as claimed in claim 1, wherein: the positioning plate (5) is fixed on the shell (1) through a first positioning pin (6) and a second positioning pin (7).
3. The simple precision positioning press pin device for the shell as claimed in claim 1, wherein: the cylindrical pin penetrating hole is 2 stepped concentric holes, the transition section of the 2 concentric holes is of a conical structure, and the pin (2) is also of a stepped structure.
4. The simple precision positioning press pin device for the shell as claimed in claim 3, wherein: the concentricity of the middle excircle of the pin (2) to the excircle of the top pin pressing end is less than or equal to 0.05mm, and the joint of the head of the pin (2) and the middle excircle is subjected to back chipping treatment.
5. The simple precision positioning press pin device for the shell as claimed in claim 3, wherein: the concentricity of the large hole and the small hole in the cylindrical pin penetrating hole of the guide sleeve (4) is less than or equal to 0.05mm, the planeness of the two end faces of the guide sleeve (4) is less than or equal to 0.01mm, the large hole and the small hole of the guide sleeve (4) are in clearance fit with the large excircle and the small excircle of the pin (2) in corresponding fit, and the fit clearance is 0-0.02 mm.
6. The simple precision positioning press pin device for the shell as claimed in claim 5, wherein: the small hole of the cylindrical pin penetrating hole is in clearance fit with the cylindrical pin (8), and the fit clearance between the cylindrical pin and the cylindrical pin is 0-0.005 mm.
7. The simple precision positioning press pin device for the shell as claimed in claim 1, wherein: the outer circle of the guide sleeve (4) is in clearance fit with the guide hole of the positioning plate (5), the fit clearance between the guide sleeve and the guide hole is 0-0.02 mm, and the center of the outer circle of the guide sleeve (4) and the center of the guide hole of the positioning plate (5) are coincided with the center of the cylindrical pin (8).
8. The simple precision positioning press pin device for the shell as claimed in claim 2, wherein: first locating pin (6) and second locating pin (7) and locating plate (5) interference fit, the cooperation degree of tightness is 0.03 ~ 0.05mm, and locating hole clearance fit on first locating pin (6) and second locating pin (7) and casing (1), cooperation clearance are 0.005 ~ 0.015 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110443004.7A CN113172406A (en) | 2021-04-23 | 2021-04-23 | Simple precise positioning pin pressing device for shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110443004.7A CN113172406A (en) | 2021-04-23 | 2021-04-23 | Simple precise positioning pin pressing device for shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113172406A true CN113172406A (en) | 2021-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110443004.7A Pending CN113172406A (en) | 2021-04-23 | 2021-04-23 | Simple precise positioning pin pressing device for shell |
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| CN (1) | CN113172406A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201889759U (en) * | 2010-11-04 | 2011-07-06 | 西安航空动力股份有限公司 | Pin presser |
| KR101502232B1 (en) * | 2013-09-27 | 2015-03-12 | 주식회사 현대케피코 | jig for press-in filter to injector |
| US20180023939A1 (en) * | 2016-07-25 | 2018-01-25 | The Boeing Company | Retractable index pins and methods of operating thereof |
| CN109202422A (en) * | 2018-11-30 | 2019-01-15 | 重庆长安汽车股份有限公司 | A kind of positioning pin press-loading apparatus |
| CN109202423A (en) * | 2018-11-30 | 2019-01-15 | 重庆长安汽车股份有限公司 | A kind of positioning pin press-loading apparatus |
| CN209902593U (en) * | 2019-01-22 | 2020-01-07 | 浙江方正电机股份有限公司 | Oil pressing sealing device with mechanical limit |
| CN210388205U (en) * | 2019-09-04 | 2020-04-24 | 丹鸟机电(苏州)有限公司 | Device for preventing connecting rod cylindric lock gnaws limit |
| CN210550712U (en) * | 2019-09-12 | 2020-05-19 | 武汉市飞托克实业有限公司 | Pin pressing clamp |
| CN112318091A (en) * | 2020-11-20 | 2021-02-05 | 中国空空导弹研究院 | Pin assembly universal fixture |
| CN212683814U (en) * | 2020-06-15 | 2021-03-12 | 杭州世宝汽车方向机有限公司 | High-efficient multi-functional pressure equipment frock |
-
2021
- 2021-04-23 CN CN202110443004.7A patent/CN113172406A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201889759U (en) * | 2010-11-04 | 2011-07-06 | 西安航空动力股份有限公司 | Pin presser |
| KR101502232B1 (en) * | 2013-09-27 | 2015-03-12 | 주식회사 현대케피코 | jig for press-in filter to injector |
| US20180023939A1 (en) * | 2016-07-25 | 2018-01-25 | The Boeing Company | Retractable index pins and methods of operating thereof |
| CN109202422A (en) * | 2018-11-30 | 2019-01-15 | 重庆长安汽车股份有限公司 | A kind of positioning pin press-loading apparatus |
| CN109202423A (en) * | 2018-11-30 | 2019-01-15 | 重庆长安汽车股份有限公司 | A kind of positioning pin press-loading apparatus |
| CN209902593U (en) * | 2019-01-22 | 2020-01-07 | 浙江方正电机股份有限公司 | Oil pressing sealing device with mechanical limit |
| CN210388205U (en) * | 2019-09-04 | 2020-04-24 | 丹鸟机电(苏州)有限公司 | Device for preventing connecting rod cylindric lock gnaws limit |
| CN210550712U (en) * | 2019-09-12 | 2020-05-19 | 武汉市飞托克实业有限公司 | Pin pressing clamp |
| CN212683814U (en) * | 2020-06-15 | 2021-03-12 | 杭州世宝汽车方向机有限公司 | High-efficient multi-functional pressure equipment frock |
| CN112318091A (en) * | 2020-11-20 | 2021-02-05 | 中国空空导弹研究院 | Pin assembly universal fixture |
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Application publication date: 20210727 |