CN112077791B - Device and method for controlling assembly precision of tiny precise component - Google Patents
Device and method for controlling assembly precision of tiny precise component Download PDFInfo
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- CN112077791B CN112077791B CN202010883665.7A CN202010883665A CN112077791B CN 112077791 B CN112077791 B CN 112077791B CN 202010883665 A CN202010883665 A CN 202010883665A CN 112077791 B CN112077791 B CN 112077791B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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Abstract
The invention discloses a device and a method for controlling the assembly precision of a tiny precise component, wherein the device is used for realizing the precise assembly of a small valve sleeve part, a steel ball seat part and a tiny steel ball, and is characterized by comprising the following steps: the small valve sleeve part is installed and positioned in the locating sleeve, the guide sleeve is inserted into the small valve sleeve part, the small steel ball slides to the installation position through the guide sleeve, and the limiting rod is used for press-fitting the steel ball seat part to the installation position in the small valve sleeve part. The invention effectively solves the problems of component scrapping caused by repeated adjustment and positioning of parts, steel ball displacement during assembly and poor position consistency of the assembled steel ball seat parts in the assembly process of the small precise component, realizes active safe positioning of the small component and precise limiting in the assembly process, is rapid and convenient, greatly improves the processing quality and efficiency, and is easy to realize.
Description
The technical field is as follows:
the invention belongs to the technical field of machining, and relates to a device and a method for controlling the assembly precision of a tiny precision component.
The background art comprises the following steps:
the small precise component is formed by assembling a small valve sleeve (the total length is less than 12mm, the diameter of an assembling inner hole is less than 3mm), a small steel ball (the diameter is less than phi 1.2mm) and a steel ball seat (the maximum excircle diameter is less than 3mm, and the total length is less than 3mm), and the small steel ball is required to move flexibly in the component after being assembled, and the movement stroke error of the small steel ball is within the range of 0.1 mm. The depth of an assembling inner hole and the length processing error of a sealing chamfer of the assembling inner hole on the small valve sleeve part, the depth of an inner hole of a steel ball seat and the length processing error of the sealing chamfer of the steel ball seat are comprehensively analyzed, and if the movement stroke error of the assembled small steel ball is within the range of 0.1mm, the assembling precision of the small steel ball and the steel ball seat in the process of assembling the small valve sleeve into the assembling inner hole is required to be within 0.02 mm.
The traditional assembly method is carried out by using a vice, and comprises the following specific steps:
(1) vertically placing a precise parallel jaw vice, and placing a fixed jaw on an operation platform;
(2) vertically placing the small valve sleeve part on a fixed jaw plane of a vice;
(3) placing a tiny steel ball in the inner hole of the small valve sleeve by using a pair of tweezers;
(4) placing the steel ball seat in the inner hole of the small valve sleeve by using forceps;
(5) rotating the screw rod by a wrench to drive the movable jaw to move, and continuously extruding the upper end surface of the steel ball seat through the movable jaw to enable the upper end surface of the steel ball seat to be flush with the upper end surface of the small valve sleeve;
(6) the upper end face of the steel ball seat is placed on a handheld cylindrical pin, the screw rod is continuously rotated by a wrench on one hand to drive the movable jaw to move, the cylindrical pin is extruded by the movable jaw, and an operator judges the size of assembly resistance through experience and hand feeling to determine the position of the steel ball seat in the inner hole of the small valve sleeve.
The above method has several problems in practice: firstly, small valve sleeve parts belong to tiny parts, are unstable to place, and are easy to turn over during the moving process of a movable jaw, so that the process is repeated; when the tiny steel balls are loaded into the inner holes of the small valve sleeves, the tiny steel balls are not easy to be aligned with the sealing chamfers on the bottom surfaces of the inner holes of the small valve sleeves, and cannot be quickly positioned; in the assembling process, parts are in a free state, the tiny steel balls are easy to deviate, and the tiny steel balls cannot move after being assembled to cause assembly scrap; and fourthly, in the assembling process, the assembling position of the steel ball seat in the inner hole of the small valve sleeve is mainly controlled by the experience of an operator, so that the tiny steel ball cannot move (is stuck) or has overlarge movement stroke after being assembled, and the use requirement cannot be met. Therefore, the method has low processing efficiency and high quality risk.
Disclosure of Invention
Aiming at the defects of the traditional method, the device for controlling the assembly precision of the tiny precise component is adopted, active safe positioning in the assembly process of the tiny precise component is realized, and the side turning and deviation of parts are avoided; on the other hand, the size and the precision of the device are accurately designed, the limit in the assembling process can be realized, the accurate control of the position consistency of the assembled steel ball seat in the small valve sleeve assembling inner hole can be ensured only according to the specified steps, and the motion stroke of the small steel ball in the small precise assembly is ensured to meet the requirement.
In order to achieve the above object, according to a first aspect of the present invention, there is provided an apparatus for controlling assembly accuracy of a minute precision assembly including a small valve sleeve part 4, a steel ball seat part 5, and a minute steel ball 6, comprising: the small valve sleeve part 4 is installed and positioned in the positioning sleeve 1, the guide sleeve 2 is inserted into the small valve sleeve part 4, the small steel ball 6 slides to an installation position through the guide sleeve 2, and the limiting rod 3 is used for press-fitting the steel ball seat part 5 to the installation position in the small valve sleeve part 4;
the center of the positioning sleeve 1 is provided with two-stage step inner holes from top to bottom, namely an upper-end step inner hole and a lower-end step inner hole, and the lower-end step inner hole is matched with the taper excircle 41 of the small valve sleeve part 4 in large diameter; the inner hole of the upper step is matched with the excircle of the steel ball seat part 5; in the assembling process, a small valve sleeve part 4 is arranged in an inner hole of a step at the lower end of the positioning sleeve 1;
a through hole is formed in the axial center of the guide sleeve 2, and the aperture of the through hole is matched with that of the tiny steel ball 6; in the assembling process, the guide sleeve 2 penetrates through an inner hole of a step at the upper end of the positioning sleeve 1 to be in sliding fit with an assembling inner hole 42 of the small valve sleeve part 4, and the tiny steel ball 6 slides to the center of an assembling inner hole bottom sealing chamfer 43 of the small valve sleeve part 4 through an axial through hole of the guide sleeve 2; after the tiny steel balls 6 are assembled, the guide sleeve 2 is taken out from the inner hole of the step at the upper end of the positioning sleeve 1;
the limiting rod 3 is provided with two-stage step excircles from top to bottom, which are respectively marked as a first step excircle and a second step excircle, the diameter of the first step excircle is larger than that of the inner hole of the step at the upper end of the positioning sleeve 1, the diameter of the second step excircle is smaller than that of the assembling inner hole 42 of the small valve sleeve part 4, and the second step excircle can slide upwards and downwards along the axis in the inner hole of the step at the upper end of the positioning sleeve 1; in the assembling process, the steel ball seat part 5 penetrates through an inner hole of a step at the upper end of the positioning sleeve 1, is in contact with an orifice of an assembling inner hole 42 of the small valve sleeve part 4, and is pressed to be matched with an installation position by pressing the limiting rod 3;
and the difference L1 between the total axial length of the positioning sleeve 1 and the axial length of the excircle of the step at the second position of the limiting rod 3 is equal to the distance L2 between the bottom surface of the small valve sleeve part 4 and the upper end surface of the steel ball seat part 5 after assembly and installation.
In a possible embodiment, in the assembling process, when the lower end face of the excircle of the first step of the limiting rod 3 is tightly attached to the upper end face of the locating sleeve 1, the limiting function is realized, and at the moment, the position of the steel ball seat part 5 in the assembling inner hole 42 of the small valve sleeve part 4 is a fixed value, so that the assembling precision is within 0.02mm in the process of assembling the small steel ball 6 and the steel ball seat part 5 to the assembling inner hole 42 of the small valve sleeve part 4, and the movement stroke error of the assembled small steel ball 6 is indirectly ensured within the range of 0.1 mm.
Furthermore, after the guide sleeve 2 is installed in the assembling inner hole 42 of the small valve sleeve part 4, the end surface of the guide sleeve 2 is higher than the upper end surface of the positioning sleeve 1, and the operation is convenient when the guide sleeve 2 is taken out.
According to a second aspect of the present invention, there is provided a method for controlling the assembly accuracy of a fine precision component, using the above apparatus, the control steps are as follows:
step 1: fixing a precise parallel jaw vice on an operation platform;
step 2: placing the small valve sleeve part 4 on the plane of a fixed jaw of a precision parallel jaw vice;
and 3, step 3: a small valve sleeve part 4 penetrates through an inner hole of a step at the lower end of the positioning sleeve 1 and is installed into the positioning sleeve 1, and the lower end face of the positioning sleeve 1 is tightly attached to the plane of a fixed jaw of a precision parallel jaw vice;
and 4, step 4: the guide sleeve 2 penetrates through an inner hole of a step at the upper end of the positioning sleeve 1 and is arranged into an assembly inner hole 42 of the small valve sleeve part 4;
and 5: a tiny steel ball 6 passes through an axial through hole of the guide sleeve 2 and is arranged in the center of an assembly inner hole bottom sealing chamfer 43 of the small valve sleeve part 4;
step 6: taking out the guide sleeve 2 from the inner hole of the step at the upper end of the positioning sleeve 1;
and 7: a steel ball seat part 5 penetrates through an inner hole of a step at the upper end of the positioning sleeve 1 and is in contact with an opening of an assembling inner hole 42 of a small valve sleeve part 4;
and 8: the excircle of the second step of the limiting rod 3 is arranged in the inner hole of the step at the upper end of the positioning sleeve 1;
and step 9: driving a movable jaw of a precision parallel jaw vice, extruding the upper end surface of the limiting rod 3 by the movable jaw to enable the limiting rod 3 to move downwards, and extruding the steel ball seat part 5 by the lower end surface of the excircle of the second step of the limiting rod 3 to be assembled in an assembling inner hole 42 of the small valve sleeve part 4 in an interference fit manner;
step 10: continuously driving until a movable jaw of the precision vice cannot move, wherein the lower end face of the excircle of the first step of the limiting rod 3 is tightly attached to the upper end face of the positioning sleeve 1 to realize the limiting function, and the difference between the total length of the positioning sleeve 1 and the length of the excircle of the second step of the limiting rod 3 ensures the positions of the micro steel ball 6 and the steel ball seat part 5 in the assembly inner hole 42 of the small valve sleeve part 4, so that the movement stroke error of the micro steel ball 6 after assembly is ensured to be within the range of 0.1 mm;
step 11: taking out the tiny precise component from the precise parallel jaw vice, and detecting the distance from the bottom surface 44 of the small valve sleeve part 4 to the upper end surface of the steel ball seat part 5 by using a height measuring instrument to meet the requirement; if the requirements are not met, the small valve sleeve part 4 in the assembled small precision assembly passes through the inner hole of the step at the lower end of the positioning sleeve 1, and the steps 8-11 are repeated.
Compared with the traditional method, the method is used in the assembling process, firstly, the small valve sleeve part is positioned by the positioning sleeve, the risks of side turning of the small valve sleeve part and deviation of the small steel ball in the assembling process are effectively avoided, secondly, the small steel ball passes through the guide sleeve and enters the center of the sealing chamfer of the assembling inner hole of the small valve sleeve part, the rapid and accurate positioning is realized, the repeated adjustment is avoided, and the operation is efficient; the automatic limiting of the assembly process is realized through the length difference of the positioning sleeve and the excircle of the step at the lower end of the limiting rod, an operator only needs to ensure that the lower end face of the excircle of the step at the upper end of the limiting rod is tightly attached to the upper end face of the positioning sleeve, so that the accuracy and consistency of the positions of the small steel ball and the steel ball seat part in the small valve sleeve assembly inner hole in the assembly process can be realized, the use performance of the small precise assembly is ensured, the scrapping caused by the fact that the movement stroke of the small steel ball is not met, and the quality hidden danger is eliminated. Simultaneously, the device also can use when other small accurate subassembly of multiclass assembles, has certain suitability and popularization nature.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for controlling the assembly accuracy of a minute precision component according to the present invention;
FIG. 2 is an axial sectional view of a device for controlling the assembly accuracy of a tiny precise component, which is used for assembling tiny steel balls, according to the invention;
FIG. 3 is a schematic diagram of the limiting mechanism of the device for controlling the assembly precision of a tiny precision component according to the present invention;
FIG. 4 is a schematic diagram of a structure of a type of micro precision component after assembly;
FIG. 5 is a schematic diagram of the construction of small valve sleeve components in a small precision assembly of some type;
FIG. 6 is a schematic diagram of the present invention for controlling the assembly accuracy of a small precision component.
Wherein: 1-positioning sleeve, 2-guide sleeve, 3-limiting rod, 4-small valve sleeve part, 41-taper excircle of small valve sleeve part, 42-assembly inner hole of small valve sleeve part, 43-assembly inner hole bottom sealing chamfer of small valve sleeve part, 44-bottom surface of small valve sleeve part, 5-steel ball seat part, 6-tiny steel ball.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention, and the terms "first", "second", "third" are used for descriptive purposes only and are not intended to indicate or imply relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and encompass, for example, both fixed and removable connections as well as integral connections; there may be communication between the interiors of the two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
As shown in fig. 1 to 6, an apparatus for controlling the assembly accuracy of a minute precision assembly including a small valve sleeve part 4, a steel ball seat part 5, a minute steel ball 6, comprises: the small valve sleeve part 4 is installed and positioned in the positioning sleeve 1, the guide sleeve 2 is inserted into the small valve sleeve part 4, the small steel ball 6 slides to an installation position through the guide sleeve 2, and the limiting rod 3 is used for press-fitting the steel ball seat part 5 to the installation position in the small valve sleeve part 4;
the center of the positioning sleeve 1 is provided with two-stage step inner holes from top to bottom, namely an upper-end step inner hole and a lower-end step inner hole, and the lower-end step inner hole is matched with the taper excircle 41 of the small valve sleeve part 4 in large diameter; the inner hole of the upper step is matched with the excircle of the steel ball seat part 5; in the assembling process, the small valve sleeve part 4 is arranged in the inner hole of the step at the lower end of the positioning sleeve 1;
a through hole is formed in the axial center of the guide sleeve 2, and the aperture of the through hole is matched with the diameter of the tiny steel ball 6; in the assembling process, the guide sleeve 2 penetrates through an inner hole of a step at the upper end of the positioning sleeve 1 to be matched in a sliding manner to enter an assembling inner hole 42 of the small valve sleeve part 4, and the tiny steel ball 6 slides to the center of an assembling inner hole bottom sealing chamfer 43 of the small valve sleeve part 4 through an axial through hole of the guide sleeve 2; after the tiny steel balls 6 are assembled, the guide sleeve 2 is taken out from the inner hole of the step at the upper end of the positioning sleeve 1;
the limiting rod 3 is provided with two-stage step excircles from top to bottom, which are respectively marked as a first step excircle and a second step excircle, the diameter of the first step excircle is larger than that of the inner hole of the step at the upper end of the positioning sleeve 1, the diameter of the second step excircle is smaller than that of the assembling inner hole 42 of the small valve sleeve part 4, and the second step excircle can slide upwards and downwards along the axis in the inner hole of the step at the upper end of the positioning sleeve 1; in the assembling process, the steel ball seat part 5 penetrates through an inner hole of a step at the upper end of the positioning sleeve 1, is in contact with an orifice of an assembling inner hole 42 of the small valve sleeve part 4, and is pressed to be matched with an installation position by pressing the limiting rod 3;
the difference L1 between the total axial length of the positioning sleeve 1 and the axial length of the excircle of the second step of the limiting rod 3 is equal to the distance L2 between the bottom surface of the small valve sleeve part 4 and the upper end surface of the steel ball seat part 5 after assembly and installation;
in the assembling process, when the lower end face of the excircle of the first step of the limiting rod 3 is tightly attached to the upper end face of the positioning sleeve 1, the limiting function is realized, and at the moment, the position of the steel ball seat part 5 in the assembling inner hole 42 of the small valve sleeve part 4 is a fixed value, so that the assembling precision is within 0.02mm in the process of assembling the tiny steel ball 6 and the steel ball seat part 5 to the assembling inner hole 42 of the small valve sleeve part 4, and the movement stroke error of the tiny steel ball 6 after assembling is indirectly ensured to be within 0.1 mm;
after the guide sleeve 2 is arranged in the assembly inner hole 42 of the small valve sleeve part 4, the end surface of the guide sleeve 2 is higher than the upper end surface of the positioning sleeve 1, and the guide sleeve 2 is convenient to operate when taken out.
A method for controlling the assembly precision of a tiny precise component adopts the device, and the control steps are as follows:
step 1: fixing a precise parallel jaw vice on an operation platform;
step 2: placing the small valve sleeve part 4 on the plane of a fixed jaw of a precise parallel jaw vice;
and 3, step 3: a small valve sleeve part 4 penetrates through an inner hole of a step at the lower end of the positioning sleeve 1 and is installed into the positioning sleeve 1, and the lower end face of the positioning sleeve 1 is tightly attached to the plane of a fixed jaw of a precision parallel jaw vice;
and 4, step 4: the guide sleeve 2 penetrates through an inner hole of a step at the upper end of the positioning sleeve 1 and is arranged into an assembly inner hole 42 of the small valve sleeve part 4;
and 5: a tiny steel ball 6 passes through an axial through hole of the guide sleeve 2 and is arranged in the center of an assembly inner hole bottom sealing chamfer 43 of the small valve sleeve part 4;
and 6: taking out the guide sleeve 2 from the inner hole of the step at the upper end of the positioning sleeve 1;
and 7: a steel ball seat part 5 penetrates through an inner hole of a step at the upper end of the positioning sleeve 1 and is in contact with an opening of an assembling inner hole 42 of a small valve sleeve part 4;
and 8: the excircle of the second step of the limiting rod 3 is arranged in the inner hole of the step at the upper end of the positioning sleeve 1;
and step 9: driving a movable jaw of a precision parallel jaw vice, extruding the upper end face of a limiting rod 3 by the movable jaw to enable the limiting rod 3 to move downwards, and extruding a steel ball seat part 5 by the lower end face of the excircle of a second step of the limiting rod 3 to be assembled in an assembling inner hole 42 of a small valve sleeve part 4 in an interference manner;
step 10: continuously driving until a movable jaw of the precision vice cannot move, wherein the lower end face of the excircle of the first step of the limiting rod 3 is tightly attached to the upper end face of the positioning sleeve 1 to realize the limiting function, and the difference between the total length of the positioning sleeve 1 and the length of the excircle of the second step of the limiting rod 3 ensures the positions of the micro steel ball 6 and the steel ball seat part 5 in the assembly inner hole 42 of the small valve sleeve part 4, so that the movement stroke error of the micro steel ball 6 after assembly is ensured to be within the range of 0.1 mm;
step 11: taking out the tiny precise component from the precise parallel jaw vice, and detecting the distance from the bottom surface 44 of the small valve sleeve part 4 to the upper end surface of the steel ball seat part 5 by using a height measuring instrument to meet the requirement; if the requirements are not met, the small valve sleeve part 4 in the assembled small precision assembly passes through the inner hole of the step at the lower end of the positioning sleeve 1, and the steps 8-11 are repeated.
The invention solves the problems that in the assembly process of a small precise component, the component needs to be repeatedly adjusted and positioned, the small valve sleeve component is laterally turned during assembly, the small steel ball is deviated, and the position consistency of the assembled steel ball seat component is poor, so that the component is scrapped. During operation, active safe positioning of the tiny parts and accurate limiting of the assembly process can be achieved only according to specified steps, and the method is fast and convenient. Compared with the traditional method, the assembly time of the single assembly of the tiny precise assembly is shortened by over 60 percent, the processing qualification rate reaches 100 percent, and the assembly requirement of the tiny precise assembly is completely met.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (8)
1. The utility model provides a device for controlling small precision assembly precision, small precision assembly includes little valve barrel part (4), steel ball seat part (5), small steel ball (6), its characterized in that includes: the small valve sleeve part (4) is installed and positioned in the positioning sleeve (1), the guide sleeve (2) is inserted into the small valve sleeve part (4), the small steel ball (6) slides to an installation position through the guide sleeve (2), and the limiting rod (3) is used for press-fitting the steel ball seat part (5) to the installation position in the small valve sleeve part (4);
the center of the positioning sleeve (1) is provided with two-stage step inner holes from top to bottom, namely an upper-end step inner hole and a lower-end step inner hole, and the lower-end step inner hole is matched with the large diameter of a taper excircle (41) of the small valve sleeve part (4); the inner hole of the upper step is matched with the excircle of the steel ball seat part (5);
a through hole is formed in the axial center of the guide sleeve (2), and the aperture of the through hole is matched with the diameter of the tiny steel ball (6);
the limiting rod (3) is provided with two-stage step excircles from top to bottom, which are respectively marked as a first step excircle and a second step excircle, the diameter of the first step excircle is larger than the diameter of the inner hole of the step at the upper end of the positioning sleeve (1), the diameter of the second step excircle is smaller than the diameter of the assembling inner hole (42) of the small valve sleeve part (4), and the second step excircle can slide upwards and downwards along the axial direction in the inner hole of the step at the upper end of the positioning sleeve (1);
the difference L1 of the total axial length of the locating sleeve (1) and the axial length of the excircle of the step at the second position of the limiting rod (3) is equal to the distance L2 between the bottom surface of the small valve sleeve part (4) and the upper end surface of the steel ball seat part (5) after assembly.
2. An apparatus for controlling the assembly accuracy of minute precision components as claimed in claim 1, wherein the small valve housing part (4) is fitted into the stepped inner hole of the lower end of the position sleeve (1) during the assembly process.
3. The device for controlling the assembling precision of the tiny precision components as claimed in claim 1, characterized in that during the assembling process, the guide sleeve (2) passes through the inner hole of the step at the upper end of the positioning sleeve (1) to be matched into the assembling inner hole (42) of the small valve sleeve part (4), the tiny steel ball (6) slides to the center of the assembling inner hole bottom sealing chamfer (43) of the small valve sleeve part (4) through the axial through hole of the guide sleeve (2); and after the tiny steel balls (6) are assembled, taking the guide sleeve (2) out of the inner hole of the step at the upper end of the positioning sleeve (1).
4. The apparatus for controlling the assembling accuracy of minute precision components as claimed in claim 1, wherein in the assembling process, the ball seat part (5) passes through the stepped inner hole of the upper end of said positioning sleeve (1) and contacts with the orifice of the assembling inner hole (42) of the small valve sleeve part (4), and the ball seat part (5) is press-fitted to the mounting position by pressing down said stopper rod (3).
5. The apparatus for controlling the assembly accuracy of minute precision components claimed in claim 1, wherein after the assembly is completed, the error of the movement stroke of the minute steel ball (6) is within the range of 0.1 mm.
6. The device for controlling the assembling accuracy of the tiny precise components as claimed in claim 1, characterized in that, during the assembling process, after the guide sleeve (2) is installed in the assembling inner hole (42) of the small valve sleeve part (4), the end surface of the guide sleeve (2) is higher than the upper end surface of the positioning sleeve (1).
7. A method for controlling the assembly accuracy of minute precision components using the apparatus for controlling the assembly accuracy of minute precision components claimed in any one of claims 1 to 6, comprising the steps of:
step 1: fixing a precise parallel jaw vice on an operation platform;
step 2: placing the small valve sleeve part (4) on the plane of a fixed jaw of a precise parallel jaw vice;
and step 3: a small valve sleeve part (4) penetrates through an inner hole of a step at the lower end of the positioning sleeve (1) and is installed into the positioning sleeve (1), and the lower end face of the positioning sleeve (1) is tightly attached to the plane of a fixed jaw of a precision parallel jaw vice;
and 4, step 4: the guide sleeve (2) penetrates through an inner hole of a step at the upper end of the positioning sleeve (1) and is arranged into an assembly inner hole (42) of the small valve sleeve part (4);
and 5: a tiny steel ball (6) penetrates through an axial through hole of the guide sleeve (2) and is installed in the center of a hole bottom sealing chamfer (43) of an assembling inner hole of the small valve sleeve part (4);
and 6: taking out the guide sleeve (2) from the inner hole of the upper step of the positioning sleeve (1);
and 7: a steel ball seat part (5) penetrates through an inner hole of a step at the upper end of the positioning sleeve (1) and is in contact with an orifice of an assembling inner hole (42) of a small valve sleeve part (4);
and step 8: the excircle of the step at the second position of the limiting rod (3) is arranged in the inner hole of the step at the upper end of the positioning sleeve (1);
and step 9: driving a movable jaw of a precision parallel jaw vice, extruding the upper end face of a limiting rod (3) by the movable jaw to enable the limiting rod (3) to move downwards, and extruding a steel ball seat part (5) by the lower end face of the excircle of a second step of the limiting rod (3) to be assembled in an assembling inner hole (42) of a small valve sleeve part (4) in an interference manner;
step 10: the driving is continued until the movable jaw of the precision vice cannot move, and at the moment, the lower end surface of the excircle of the first step of the limiting rod (3) is tightly attached to the upper end surface of the positioning sleeve (1), so that the limiting function is realized;
step 11: taking out the tiny precise component from the precise parallel jaw vice, and detecting the distance from the bottom surface (44) of the small valve sleeve part (4) to the upper end surface of the steel ball seat part (5) by using a height measuring instrument to meet the requirement; if the requirements are not met, the small valve sleeve part (4) in the assembled small precise component penetrates through an inner hole of a step at the lower end of the positioning sleeve (1), and the step 8-11 is repeated.
8. The method for controlling the assembling precision of the tiny precision component as claimed in claim 7, wherein in the step 10, the position of the tiny steel ball (6) and the steel ball seat part (5) in the assembling inner hole (42) of the small valve sleeve part (4) is ensured by using the difference between the total length of the locating sleeve (1) and the length of the outer circle of the step at the second position of the limiting rod (3), so as to realize the limiting, thereby ensuring that the movement stroke error of the tiny steel ball is within 0.1mm after the assembling.
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| CN202010883665.7A CN112077791B (en) | 2020-08-28 | 2020-08-28 | Device and method for controlling assembly precision of tiny precise component |
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| JP3431378B2 (en) * | 1995-06-22 | 2003-07-28 | 株式会社日立製作所 | Valve sealing surface finishing method, valve sealing surface finishing device and valve device |
| CN202952186U (en) * | 2012-11-27 | 2013-05-29 | 上海高压油泵厂有限公司 | Fixture for machining one-way valve of general shaft pump |
| CN103056588B (en) * | 2013-01-04 | 2015-11-11 | 宿迁市波尔特机械制造有限公司 | Cooling water pump of diesel engine fixed cover finishing of internal diameter frock and method for fine finishing thereof |
| CN105840841B (en) * | 2016-05-09 | 2018-01-02 | 贵州大学 | A kind of Multi-functional hydraulic combination valve |
| CN106141732B (en) * | 2016-07-29 | 2018-03-02 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of clamping and positioner for the fine finished machined of steel ball seat |
| CN205968861U (en) * | 2016-08-17 | 2017-02-22 | 中国航空工业集团公司西安飞行自动控制研究所 | Smooth valve assembly of hydraulic pressure tool with elastic element |
| CN106475762B (en) * | 2016-12-08 | 2018-12-18 | 芜湖全程智能科技有限公司 | The assembly method of ABS solenoid valve transition sleeve closing in component and valve pocket |
| CN107598590B (en) * | 2017-11-02 | 2023-08-25 | 四川航天烽火伺服控制技术有限公司 | Precise tool for machining valve sleeve hole and valve sleeve machining equipment |
| CN209394615U (en) * | 2018-12-14 | 2019-09-17 | 苏州市燃气设备阀门制造有限公司 | Band gas is changed the shuttle valve tooling |
| CN209830814U (en) * | 2019-03-28 | 2019-12-24 | 毕勤自动化技术(上海)股份有限公司 | Automatic press-fitting mechanism for electromagnetic pump valve element |
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2020
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