CN111008443A - Tolerance design method for end face insertion connection and separation mechanism of electric connector - Google Patents

Tolerance design method for end face insertion connection and separation mechanism of electric connector Download PDF

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Publication number
CN111008443A
CN111008443A CN201911330153.1A CN201911330153A CN111008443A CN 111008443 A CN111008443 A CN 111008443A CN 201911330153 A CN201911330153 A CN 201911330153A CN 111008443 A CN111008443 A CN 111008443A
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correction
guide rod
deviation
delta
tolerance
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CN111008443B (en
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王文龙
张晓天
庄原
王波
殷新喆
何冰
杨建中
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Beihang University
Beijing Institute of Spacecraft System Engineering
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Beihang University
Beijing Institute of Spacecraft System Engineering
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/26—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

The invention discloses a tolerance design method for an end face inserting, connecting and separating mechanism of an electric connector, which adopts two-stage modes of rough correction and fine correction. Wherein, the rough correction is realized by designing a paw at the circumference of the driving end to match with a clamping groove designed on the passive section; the fine correction is realized by inserting and matching a guide rod designed on the butt joint surface of the active end and a guide rod hole designed at the corresponding position on the butt joint surface of the passive end, and chamfering design is carried out on the front ends of the guide rod and the guide rod hole. Meanwhile, the coarse correction and the fine correction are designed, so that the automatic plugging of the plug and the socket of the electric connector is completed in the butt joint process of the driving end and the driven end of the connection and separation device, and the plugging tolerance meets the pose requirement of the plugging of the electric connector.

Description

Tolerance design method for end face insertion connection and separation mechanism of electric connector
Technical Field
The invention belongs to the field of mechanical engineering, and relates to a tolerance design method for an end face insertion connection and separation mechanism of an electric connector, which is suitable for designing an on-orbit service space connection and separation mechanism.
Background
The spacecraft connection and separation technology is a key technology for implementing the compression and on-orbit release of spacecraft parts, the connection and on-orbit separation between cabin sections and the on-orbit connection and separation between different spacecrafts. The connection and separation mechanism is an execution device for realizing connection and separation/functions of the spacecraft. With the continuous extension of the requirement of the on-orbit connection and disconnection task of the spacecraft, the function of the connection and disconnection mechanism is not limited to mechanical connection and disconnection, and generally comprises connection and disconnection of an electric circuit and an information circuit. An electrical connector is a device mounted on a connection and disconnection mechanism for making and breaking an electrical circuit and an information circuit.
The connecting and separating mechanism is generally composed of two parts, namely an active end 1 and a passive end 2, which are respectively arranged on two spacecrafts or component components, and after the active end 1 is connected with the passive end 2, the two spacecrafts or the two component components are connected; and the separation is vice versa.
The electric connector generally comprises a plug 3 and a socket 4, as shown in fig. 1, and is respectively installed on an active end 1 and a passive end 2, and after the active end 1 and the passive end 2 are connected, the plug 3 and the socket 4 of the electric connector are connected; and the separation is vice versa.
The connection and disconnection processes of the electric connector are synchronously carried out along with the butt joint and separation processes of the active end 1 and the passive end 2, the active end 1 and the passive end 2 provide power sources for the connection and separation of the plug 3 and the socket 4, and meanwhile, a connection and separation mechanism consisting of the active end 1 and the passive end 2 provides tolerance guarantee for the insertion of the plug 3 and the socket 4. An important design aspect of the connection and disconnection apparatus in the design process is the tolerance design of the face-plugging electrical connector.
The tolerance design of the electric connector refers to the capability of ensuring the relative postures of the plug 3 and the socket 4 in the process of butting the active end 1 and the passive end 2 of the connection and separation mechanism, wherein the postures comprise X, Y, Z three-direction positions and angles α, β and gamma, the position precision required when the plug 3 of the electric connector is plugged with the socket 4 is shown in table 1, and the X direction is the plugging direction.
TABLE 1 electrical connector insertion position accuracy requirement
Direction of rotation ΔY ΔZ Δα Δβ Δγ
Deviation of 1.27mm 2.03mm ±0.5° ±0.5° ±0.5°
In summary, tolerance indexes of the connection and separation mechanism need to be smaller than the plugging position precision in table 1 to ensure reliable plugging of the plug 3 and the socket 4.
Disclosure of Invention
In order to ensure the reliable insertion of the plug and the socket, the invention provides a tolerance design method of an end face insertion connection and separation mechanism of an electric connector.
The invention relates to a tolerance design method of an end face insertion connection separation mechanism of an electric connector, which adopts two-stage modes of rough correction and fine correction:
the rough correction and the deviation rectification are realized by matching the claws arranged on the circumferential direction of the driving end with the clamping grooves arranged on the passive section.
The fine correction and deviation rectification are realized by inserting and matching a guide rod designed on the butt joint surface of the active end and a guide rod hole designed at the corresponding position on the butt joint surface of the passive end.
When the fine correction deviation rectifying design is carried out, chamfering design is also carried out on the front end of the guide rod, and meanwhile, chamfering design is also carried out on the front end of the guide rod hole; the external diameter of the guide rod is D, the chamfer angle is Cd, the aperture of the guide rod hole is D, then the chamfer angle is CDThe requirements are as follows:
D+2CD-d-2Cd≥Δ
and delta is the comprehensive tolerance of the driving end and the driven end after the rough correction and the correction, and the position deviation and the angle deviation in the three directions are considered.
The invention has the advantages that:
1. the tolerance design method for the end face inserting, connecting and separating mechanism of the electric connector adopts two-stage modes of rough correction and fine correction to realize the automatic inserting and combining of the plug and the socket of the electric connector in the butt joint process of the driving end and the driven end of the connecting and separating device, and the inserting and combining tolerance meets the inserting and combining pose requirement of the electric connector.
2. The tolerance design method for the end face inserting, connecting and separating mechanism of the electric connector adopts the cantilever beam as the mounting mode of the paw, so that proper torsion can be generated in the course of rough correction and deviation rectification, the requirement on the processing and assembling precision of the system is lower, and the flexible design of the system is realized.
Drawings
FIG. 1 is a rear elevational view of an electrical connector plug mated with a receptacle;
FIG. 2 is a rear side view of the electrical connector plug mated with the receptacle;
FIG. 3 is a top view of the plug and socket of the electrical connector;
FIG. 4 is a schematic diagram of a tolerance design mechanism for an end face plugging connection and disconnection mechanism of an electrical connector according to the present invention;
FIG. 5 is a deviation tolerance analysis during the process of butt joint between the active end and the passive end.
In the figure:
1-active end 2-passive end 3-plug
4-socket 101-gripper 102-grabbing end
103-guide rod 201-clamping groove 202-guide rod hole
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention relates to a tolerance design method of an end face insertion connection separation mechanism of an electric connector, which adopts two-stage modes of rough correction and fine correction and comprises the following steps:
the rough correction and deviation rectification are realized by designing the claws 101 in the circumferential direction of the driving end 1 and matching with the clamping grooves 201 designed on the passive section. Wherein, draw-in groove 201 designs in passive 2 circumference equiangular interval positions, and draw-in groove 201 arranges along passive 2 axial of end, and the design of draw-in groove 201 tip has the butt plate.
The claws 101 are arranged along the circumferential direction of the driving end 1 at equal angular intervals, and the claws 101 are driven to be unfolded and folded by an internal driving mechanism of the driving end 1. The grabbing end 102 of the gripper 101 is designed to be of a plate-shaped structure bent inwards by 90 degrees, the shape and the size are matched with the section of the clamping groove 201, and therefore the grabbing end 102 of the gripper 101 and the clamping groove 201 are matched and spliced to realize coarse correction by controlling the gripper 101 to stretch out and then fold. By adopting the claws 101 and the clamping grooves 201 in the shapes, the claws 101 can conveniently reach the clamping grooves 201 during butt joint, and the better adaptability is realized. After the paw 101 reaches the position of the slot 201, the paw 101 is continuously guided to extend into the slot 201 through the guidance of the two side surfaces of the slot 201, that is, the postures of the driving end 1 and the driven end 2 are continuously corrected, and the rough correction and the correction between the driving end 1 and the driven end 2 are completed. The mounting mode of the gripper 101 is a cantilever beam, so that proper torsion can be generated in the course of rough correction and correction, the requirement on the processing and assembling precision of the system is low, and the flexible design of the system is realized.
The fine correction and deviation rectification are realized by inserting and matching a guide rod 103 designed on the butt joint surface of the active end 1 and a guide rod hole 202 designed at the corresponding position on the butt joint surface of the passive end 2. After the rough correction and the correction in the first stage are finished, the guide rods 103 and the corresponding guide rod holes 202 are matched in position, and then the fine correction and the correction in the second stage are finished. After the two-stage correction is completed, the tolerance of the active end 1 and the passive end 2 is smaller than the plugging tolerance of the plug 3 and the socket 4 of the electric connector, so that the plug 3 and the socket 4 of the electric connector are ensured to be plugged without faults.
The front end of the guide rod 103 is chamfered, and the front end of the guide rod hole 202 is also chamfered. Let the guide rod 103 have an outer diameter d and a chamfer CdD is the diameter of the guide rod hole 202, the chamfer angle C isDThe requirements are as follows:
D+2CD-d-2Cd≥Δ
wherein, Δ is the comprehensive tolerance of the driving end 1 and the driven end 2 after the rough correction and the correction, and the value needs to consider the position deviation in three directions and the angle deviation in three directions.
When the method of the invention is adopted for deviation correction, as shown in figure 4:
before the connector is plugged, the initial deviation between an active end 1 and a passive end 2 is that Δ Y is 50mm, Δ Z is 50mm, Δ α is ± 0.5 °, Δ β is ± 0.5 °, and Δ γ is ± 0.5 °, initial capture correction is realized by matching three claws 101 with a slot 201, the front ends of the three claws 101 approach and approach into the slot 201 in the initial capture process, the claws 101 are matched with the structure of the slot 201, i.e., coarse correction is completed, the lower end surfaces of the claws are matched with the lower end surfaces of the slot 201 after the coarse correction, the three directional angle deviations of the active end 1 and the passive end 2 are all corrected to 0 °, the deviation of the active end 1 and the passive end 2 along the two directions of Δ Y and Δ Z is determined by the structural sizes of the claws 101 and the slot 201, according to the conventional machining precision, the size deviation can be controlled below 2mm, the claw 101 is allowed to have larger deformation after the coarse capture, but the maximum deformation is not more than 1mm, and the deviation is considered as Δ 630, Δ Y2, Δ Y is corrected to Δ Y is Δ t 83, Δ Y is Δ Y0, Δ Y is 360, and Δ Y is corrected to be equal to Δ Y3 mm.
In the fine correction and deviation rectification stage, D +2C needs to be satisfiedD-d-2CdNot less than delta Y and D +2CD-d-2CdThe initial tolerance of the fine correction is superior to the tolerances delta Y and delta Z at the final stage of the coarse correction, namely the guide rod 103 at the active end 1 starts to be positioned in the guide rod hole 202 at the passive end 2. After the guide rod 103 is completely positioned, the clearance between the guide rod 103 and the guide rod hole 202 is D +2CD-d-2CdThe gap is a result of considering processing deviation and position deviation, and can meet the Y-direction deviation and the Z-direction deviation of the electric connector, so that the fine correction is finished. And finally, the tolerance is required to be smaller than that of the electric connector, the requirement on the precision of the plugging position is met, and the reliable plugging of the plug 3 and the socket 4 is ensured.

Claims (3)

1. A tolerance design method for an end face insertion connection separation mechanism of an electric connector adopts two-stage modes of rough correction and fine correction, and is characterized in that:
the rough correction is realized by designing a paw on the circumferential direction of the driving end to match with a clamping groove designed on the passive section;
the fine correction is realized by inserting and matching a guide rod designed on the butt joint surface of the active end and a guide rod hole designed at a corresponding position on the butt joint surface of the passive end;
the front end of the guide rod is chamfered, and the front end of the guide rod hole is chamfered at the same time; the external diameter of the guide rod is D, the chamfer angle is Cd, the aperture of the guide rod hole is D, then the chamfer angle is CDThe requirements are as follows:
D+2CD-d-2Cd≥Δ
and delta is the comprehensive tolerance of the driving end and the driven end after the rough correction and the correction, and the position deviation and the angle deviation in the three directions are considered.
2. The tolerance design method for the end face insertion, connection and separation mechanism of the electric connector as claimed in claim 1, is characterized in that during rough correction and deviation correction, initial capture correction is realized by matching of the claws and the clamping grooves, the front ends of the three claws approach and approach into the clamping grooves in the initial capture process, the structure matching correction of the claws and the clamping grooves is completed, the lower end face of the claw is matched with the lower end face of the clamping grooves after the rough correction, the angle deviation of the active end and the passive end in three directions is all corrected to be 0 degree, the deviation of the active end and the passive end in two directions of delta Y and delta Z is determined by the structure sizes of the claws and the clamping grooves, the size deviation is controlled to be less than 2mm according to the conventional machining precision, the claws are allowed to have larger deformation after the rough capture, but the maximum deformation is not more than 1mm, and after the rough correction and deviation correction and correction are completed, the value of delta Y is 2mm, the value of delta Z is 2mm, the value of delta α is 0, the value of delta β is 0, and the value of gamma is 0.
3. The method for designing the tolerance of the end face plugging connection and disconnection mechanism of the electrical connector as claimed in claim 1, wherein: performing fine correction and deviation correction stage to satisfy D +2CD-d-2CdNot less than delta Y and D +2CD-d-2CdThe deviation correction is more than or equal to delta Z, namely the initial tolerance of the fine correction deviation correction is required to be better than the tolerances delta Y and delta Z at the final stage of the coarse correction deviation correction before the guide rod of the driving end starts to enter the guide rod hole on the driven end; after the guide rod is completely positioned, the clearance between the guide rod and the guide rod hole is D +2CD-d-2Cd。
CN201911330153.1A 2019-12-20 2019-12-20 Tolerance design method for end face inserting connection separation mechanism of electric connector Active CN111008443B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113830196A (en) * 2021-09-26 2021-12-24 山东大学 Biped robot capable of being spliced autonomously, multi-configuration robot and control method of multi-configuration robot

Citations (4)

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Publication number Priority date Publication date Assignee Title
US6299107B1 (en) * 1998-12-04 2001-10-09 Honeybee Robotics, Ltd. Spacecraft capture and docking system
CN107628278A (en) * 2017-07-31 2018-01-26 北京空间飞行器总体设计部 With the autonomous in-orbit replaceable units being oriented to linkage function
CN109050990A (en) * 2018-08-31 2018-12-21 上海宇航系统工程研究所 A kind of repeatable aircraft bindiny mechanism
CN109264035A (en) * 2018-10-11 2019-01-25 北京航空航天大学 A kind of spacecraft " connecting rod --- claw " formula butt-joint locking device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6299107B1 (en) * 1998-12-04 2001-10-09 Honeybee Robotics, Ltd. Spacecraft capture and docking system
CN107628278A (en) * 2017-07-31 2018-01-26 北京空间飞行器总体设计部 With the autonomous in-orbit replaceable units being oriented to linkage function
CN109050990A (en) * 2018-08-31 2018-12-21 上海宇航系统工程研究所 A kind of repeatable aircraft bindiny mechanism
CN109264035A (en) * 2018-10-11 2019-01-25 北京航空航天大学 A kind of spacecraft " connecting rod --- claw " formula butt-joint locking device

Non-Patent Citations (1)

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Title
史士财等: "空间机械臂关节快换接口结构设计与分析", 《宇航学报》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113830196A (en) * 2021-09-26 2021-12-24 山东大学 Biped robot capable of being spliced autonomously, multi-configuration robot and control method of multi-configuration robot

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