CN113547286B - Machining method of front connecting seat of five-degree-of-freedom steering mechanism and front connecting seat - Google Patents
Machining method of front connecting seat of five-degree-of-freedom steering mechanism and front connecting seat Download PDFInfo
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- CN113547286B CN113547286B CN202110834245.4A CN202110834245A CN113547286B CN 113547286 B CN113547286 B CN 113547286B CN 202110834245 A CN202110834245 A CN 202110834245A CN 113547286 B CN113547286 B CN 113547286B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses a method for processing a front connecting seat of a five-degree-of-freedom steering mechanism and the front connecting seat, wherein the processing method comprises the following steps of: s1 scribing and positioning and S2 processing and forming by using a positioning clamp to clamp and position; preceding connecting seat includes: the connecting seat body, first cantilever, extend the cantilever, the second cantilever, the third cantilever, the lid seat, the lid uses a clamping of positioning fixture, avoided preceding connecting seat to appear the cantilever state man-hour, solved because of appearing the cantilever and lead to the not enough problem that produces the vibration and cause to warp or the unable assurance of precision of intensity, guaranteed the geometric tolerances and the size accuracy requirement of processing back part, because it is spacing to be the contact, it does not have stress release to demolish locking fixture, the part can not take place to warp.
Description
Technical Field
The invention relates to a method for processing a front connecting seat of a five-degree-of-freedom steering mechanism and the front connecting seat, and belongs to the technical field of connecting seats and connecting seat processing methods.
Background
In an all-terrain vehicle which can be used in complex environments such as land and water, a steering mechanism between two parts or two assemblies of the all-terrain vehicle needs to use a front connecting seat, and the structure of the front connecting seat is shown in figure 1, and the processing of the all-terrain vehicle has the following difficulties: the part blank is cast, the positions of the cantilevers are more in the structural form, the parallelism and the coaxiality of the cantilevers in the same direction require high precision, and the deformation or the precision cannot be ensured due to the vibration generated by insufficient strength during processing; secondly, secondary processing is needed to be carried out on the blank in all directions of X, Y, Z after the blank is cast, the requirement on form and position tolerance is high, the precision loss is corrected by clamping for many times, and the economy is poor; and thirdly, after the processing is finished, the stress is released due to the removal of the locking clamp, so that the deformation is generated.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for processing a front connecting seat of a five-degree-of-freedom steering mechanism and the front connecting seat.
The invention is realized by the following technical scheme.
The invention provides a method for processing a front connecting seat of a five-degree-of-freedom steering mechanism, which comprises the following steps of: s1 scribing positioning and S2 machining and forming by using the positioning clamp 2 to clamp and position.
And S1 marking and positioning, namely finding out the positions among all the holes to ensure the accuracy in processing, and S2 processing and forming, namely, using the positioning fixture 2 to clamp the front connecting seat once to finish the processing of all the position holes.
The S1 scribing positioning comprises the following steps which are sequentially completed:
s1-1: polishing the outer sides of the two first cantilever circular arcs of the blank, polishing off projections such as burrs, sticky sand and the like during casting, and eliminating casting sticky sand and scabs at the part, so that the outer sides of the first cantilever circular arcs form a positioning circular arc A, and the accuracy of taking the positioning circular arc A as a rough machining reference in the follow-up process is ensured;
s1-2: supporting a positioning arc A of the first cantilever by using equal-height V-shaped iron, carrying out adjustable support on a point F at the bottom of the cover seat through a telescopic rod, aligning the circle center J of the mounting hole by means of each processing part, and finding B, D, E end surface horizontal center lines corresponding to the centers of the through hole B, the through hole C and the through hole D according to the circle center of the mounting hole;
s1-3: and finding vertical center lines Ea and Fa of the end face of the through hole B, vertical center lines Ba and Ca of the end face of the through hole C and vertical center lines Da and Ga of the end face of the through hole D according to the circle center of the mounting hole.
The S2 processing and forming method comprises the following steps of:
s2-1: the connecting seat body is arranged on a base of a positioning fixture, the outer circular arc of a first cantilever is embedded and positioned with an equal-height V-shaped iron arc fixed on the base, a telescopic rod formed by screwing a screw rod and a nut fixed on the base can adjust and stably support the bottom of a cover seat, a pressing block screwed with the screw rod on the base of the positioning fixture tightly presses a through hole A of the connecting seat body to limit up-and-down movement, tightening bolts A are fixed on two first seat plates of the base and respectively tighten the two third cantilevers to limit the up-and-down movement and the back-and-forth movement of the third cantilevers, tightening bolts B are screwed on two sides of a second seat plate fixed on the base to limit the up-and-down movement and the front-and-back movement of the second cantilevers, so that the whole front connecting seat is fixedly clamped on the positioning fixture, a plane on the cover seat is milled and processed with a threaded hole, and a cover is screwed and fixed with the threaded hole of the cover seat through bolts;
s2-2: and processing the end surfaces of one side of the through hole A, the mounting hole, the through hole B, the through hole C, the through hole D, the first cantilever, the extension cantilever, the second cantilever and the third cantilever under the clamping action of the positioning clamp, and then, rotating the positioning clamp to process the other side.
The front connecting seat of the all-terrain vehicle hinging system obtained by processing according to the method comprises the following steps:
the connecting seat body is used for supporting and ensuring the integral strength, and a through hole A is formed in the middle of the connecting seat body;
the two cylindrical first cantilevers are arranged in parallel on two radial sides of the connecting seat body in an opposite mode, and mounting holes are formed in the first cantilevers in the axial direction;
the two extension cantilevers are arranged on each first cantilever in parallel at intervals, and through holes B are formed in the extension cantilevers;
the two second cantilevers are arranged in parallel on two axial sides of the connecting seat body and oppositely arranged, and through holes C are formed in the second cantilevers;
the two third cantilevers are spaced on the connecting seat body at one side of the second cantilever in parallel;
the cover seat is arranged on the third cantilever and provided with an arc groove;
the cover seat is fixed with the cover through screws and provided with arc grooves, and through holes D are formed between contact surfaces of the arc grooves of the cover seat and the arc grooves of the cover.
The invention has the beneficial effects that: the clamping of using positioning fixture once, having avoided preceding connecting seat to appear the cantilever state when adding man-hour, solved because of appearing the cantilever and lead to the not enough vibration of production of intensity to cause the problem of warping or the unable assurance of precision, guaranteed the geometric tolerance and the dimensional accuracy requirement of processing back part, because it is spacing to be the contact, demolish locking fixture and do not have stress release, the part can not take place to warp.
Drawings
FIG. 1 is a schematic view of a front connector housing according to the present invention;
FIG. 2 is a schematic view of the front connector holder performing step S1-1;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a schematic view of the front connector holder performing step S1-2;
FIG. 5 is a left side view of FIG. 4;
FIG. 6 is a schematic view of the front connector housing of the present invention performing step S1-3;
FIG. 7 is a partial cross-sectional view of the left side of FIG. 6;
FIG. 8 is a schematic view of the front connector holder of the present invention performing step S2-1;
FIG. 9 is a left side view of FIG. 8;
FIG. 10 is a schematic view of the front connector holder of the present invention performing step S2-1;
FIG. 11 is a schematic view of the front connector holder performing step S2-2 according to the present invention;
FIG. 12 is a left side view of FIG. 10;
in the figure: 1-a connecting seat body; 10-via a; 12-mounting holes; 13-extending the cantilever; 14-via B; 15-a third cantilever; 16-a cover seat; 17-a second cantilever; 18-through hole C; 19-cover; 191-through hole D; 2-positioning the clamp; 21-a base; 22-briquetting; 23-a first seat plate; 231-jacking bolt A; 24-a second seat plate; 241-tightening the bolt B; 3-high V-shape iron; 4-telescopic rod.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 2 to 12.
The invention discloses a method for processing a front connecting seat of a five-degree-of-freedom steering mechanism, which comprises the following steps of: s1 scribing positioning and S2 machining and forming by using the positioning clamp 2 to clamp and position.
And S1 marking and positioning, namely finding out the positions among all the holes to ensure the accuracy in processing, and S2 processing and forming, namely, using the positioning fixture 2 to clamp the front connecting seat once to finish the processing of all the position holes.
The S1 scribing positioning comprises the following steps which are sequentially completed:
s1-1: as shown in fig. 2 and 3, the outer sides of the arcs of the first cantilevers 11 at two positions of the blank are polished, and projections such as burrs, sticky sand and the like are polished during casting, so that the casting sticky sand and scabs at the positions are eliminated, and the outer sides of the arcs of the first cantilevers 11 form positioning arcs a, thereby ensuring the accuracy of the subsequent machining rough reference;
s1-2: as shown in fig. 4 and 5 and fig. 8 and 9, the positioning arc a of the first cantilever 11 is supported by the equal-height V-shaped iron 3, the point F at the bottom of the cover base 16 is adjustably supported by the telescopic rod 4, the center J of the mounting hole 12 is aligned by each processing position, and the horizontal center line of the B, D, E end face corresponding to the centers of the through hole B14, the through hole C18 and the through hole D191 is aligned by the center of the mounting hole 12;
s1-3: as shown in fig. 6 and 7, the vertical center lines Ea and Fa of the end face of the through hole B14, the vertical center lines Ba and Ca of the end face of the through hole C18, and the vertical center lines Da and Ga of the end face of the through hole D191 are located at the center of the mounting hole 12.
The S2 processing and forming method comprises the following steps of:
s2-1: as shown in fig. 8 and 9, the connecting base body 1 is mounted on the base 21 of the positioning fixture 2, the outer arc of the first cantilever 11 is embedded and positioned with the equal-height V-shaped iron 3 fixed on the base 21, the telescopic rod 4 formed by screwing the screw rod and the nut fixed on the base 21 can adjust and stably support the bottom of the cover base 16, the press block 22 screwed with the screw rod on the base 21 of the positioning fixture 2 presses the through hole a10 of the connecting base body 1 to limit the up-and-down movement, the tightening bolts a231 screwed on the two first seat plates 23 fixed on the base 21 can respectively tighten the two third cantilevers 15 to limit the up-and-down and front-and-back movement of the third cantilevers 15, the tightening bolts B241 screwed on the two sides of the second seat plate 24 fixed on the base 21 can limit the up-and-down and front-and back movement of the second cantilevers 17, so that the front connecting base is fixedly clamped on the positioning fixture 2, the upper plane of the cover base 16 is milled and processed with threaded holes, the cover 19 is screwed and fixed with the threaded hole of the cover base 16 through a bolt, as shown in fig. 10;
s2-2: the through hole a10, the mounting hole 12, the through hole B14, the through hole C18, the through hole D191, the end surface of one side of the first arm 11, the extension arm 13, the second arm 17, and the third arm 15 are machined under the clamping action of the positioning jig 2, as shown in fig. 11, and then the positioning jig 2 is rotated to machine the other side, as shown in fig. 12.
By adopting the processing method, the positioning clamp is used for clamping at one time, the cantilever state of the front connecting seat during processing is avoided, the problem that the deformation or the precision cannot be ensured due to the vibration caused by insufficient strength caused by the occurrence of the cantilever is solved, the form and position tolerance and the dimensional precision requirement of the processed part are ensured, and due to the contact type limiting, the stress release is avoided when the locking clamp is disassembled, the part cannot deform, the mechanical processing precision and quality requirement of the part are met, and the processing economy is ensured.
As shown in fig. 1.
The front connecting seat of the all-terrain vehicle hinging system obtained by processing according to the method comprises the following steps:
the connecting seat body 1 is used for supporting and ensuring the integral strength, and a through hole A10 is formed in the middle of the connecting seat body 1;
two cylindrical first cantilevers 11 that are parallel to and opposite to two radial sides of the connecting seat body 1, for example, two radial sides of the front and back of the connecting seat body 1 in fig. 1, are provided with mounting holes 12 in the axial direction of the first cantilevers 11;
two extension cantilevers 13 are parallelly arranged on each first cantilever 11 at intervals, and through holes B14 are formed in the extension cantilevers 13;
two second cantilevers 17 parallel to and oppositely disposed on two axial sides of the connecting socket body 1, for example, on two axial sides of the connecting socket body 1 in fig. 1, through holes C18 are disposed on the second cantilevers 17;
two third cantilever arms 15 spaced in parallel on the connector body 1 on one side of the second cantilever arm 17, for example, the right side of the connector body 1 in fig. 1;
a cover seat 16 provided on the third cantilever 15 and having an arc groove;
and a cover 19 fixed with the cover base 16 through screws and provided with arc grooves, wherein the arc grooves of the cover base 16 and the arc grooves of the cover 19 form a through hole D191 between the contact surfaces of the two.
Claims (1)
1. A method for processing a front connecting seat of a five-degree-of-freedom steering mechanism is characterized in that,
the front connecting seat obtained by the processing method of the front connecting seat of the five-degree-of-freedom steering mechanism comprises the following steps:
the connecting seat body (1) is used for supporting and ensuring the integral strength, and a through hole A (10) is formed in the middle of the connecting seat body (1); two cylindrical first cantilevers (11) which are parallel to the radial two sides of the connecting seat body (1) and are oppositely arranged are arranged, and mounting holes (12) are formed in the axial direction of the first cantilevers (11); two extension cantilevers (13) are parallelly arranged on each first cantilever (11) at intervals, and through holes B (14) are formed in the extension cantilevers (13); two second cantilevers (17) which are parallel to two axial sides of the connecting seat body (1) and are oppositely arranged are arranged, and through holes C (18) are formed in the second cantilevers (17); two third cantilevers (15) which are spaced in parallel on the connecting seat body (1) at one side of the second cantilever (17); a cover seat (16) which is arranged on the third cantilever (15) and is provided with an arc groove;
the cover is characterized by also comprising a cover (19) which is fixed with the cover seat (16) and is provided with an arc groove, and a through hole D (191) is formed between the contact surfaces of the arc groove of the cover seat (16) and the arc groove of the cover (19);
the processing method comprises the following steps: s1 marking and positioning and S2 processing and forming by using a positioning clamp (2) to clamp and position;
the S1 scribing positioning comprises the steps of S1-1: the outer sides of the circular arcs of the first cantilevers (11) at two positions of the blank are polished, so that the outer sides of the circular arcs of the first cantilevers (11) form a positioning circular arc A, and the positioning circular arc A is used as the accuracy of a rough machining reference;
the step S1-1 is followed by a step S1-2: supporting a positioning arc A of a first cantilever (11) by using equal-height V-shaped iron (3), carrying out adjustable support on a point F at the bottom of a cover seat (16) through a telescopic rod (4), centering a circle center J of a mounting hole (12) by means of each processing part, and finding B, D, E end surface horizontal center lines corresponding to the centers of a through hole B (14), a through hole C (18) and a through hole D (191) by the circle center J of the mounting hole (12);
the step S1-2 is followed by a step S1-3: finding vertical center lines Ea and Fa of the end face of the through hole B (14), finding vertical center lines Ba and Ca of the end face of the through hole C (18) and finding vertical center lines Da and Ga of the end face of the through hole D (191) according to the circle center of the mounting hole (12);
the S2 processing and forming comprises the following steps of S2-1: the connecting seat body (1) is arranged on a base (21) of a positioning clamp (2), the external circular arc of a first cantilever (11) is embedded and positioned with a constant-height V-shaped iron (3) fixed on the base (21) in an arc shape, a telescopic rod (4) formed by screwing a screw rod and a nut fixed on the base (21) can adjust and stably support the bottom of a cover seat (16), a pressing block (22) screwed with the screw rod on the base (21) of the positioning clamp (2) tightly presses a through hole A (10) of the connecting seat body (1) to limit the up-and-down movement, tightening bolts A (231) screwed on two first seat plates (23) fixed on the base (21) respectively tightly press two third cantilevers (15) to limit the up-and-down movement and the front-and back-and forth movement of the third cantilevers (15), tightening bolts B (241) screwed on two sides of a second seat plate (24) fixed on the base (21) limit the up-and-down movement and forth of the second cantilevers (17), the whole front connecting seat is fixedly clamped on the positioning clamp (2), the plane on the cover seat (16) is milled flat and a threaded hole is processed, and the cover (19) is screwed and fixed with the threaded hole of the cover seat (16) through a bolt;
after the step S1-1, the step S2-2 is also performed: under the clamping action of the positioning clamp (2), one side end face of the through hole A (10), the mounting hole (12), the through hole B (14), the through hole C (18), the through hole D (191), the first cantilever (11), the extension cantilever (13), the second cantilever (17) and the third cantilever (15) is machined, and then the positioning clamp (2) is rotated to machine the other side.
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| CN202110834245.4A CN113547286B (en) | 2021-07-21 | 2021-07-21 | Machining method of front connecting seat of five-degree-of-freedom steering mechanism and front connecting seat |
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| CN202110834245.4A CN113547286B (en) | 2021-07-21 | 2021-07-21 | Machining method of front connecting seat of five-degree-of-freedom steering mechanism and front connecting seat |
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| CN113547286B true CN113547286B (en) | 2022-09-20 |
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