CN104999221A - Preparation method for snake bone device of endoscope - Google Patents
Preparation method for snake bone device of endoscope Download PDFInfo
- Publication number
- CN104999221A CN104999221A CN201510207482.2A CN201510207482A CN104999221A CN 104999221 A CN104999221 A CN 104999221A CN 201510207482 A CN201510207482 A CN 201510207482A CN 104999221 A CN104999221 A CN 104999221A
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- China
- Prior art keywords
- snake bone
- pitch circle
- engaging lug
- snake
- bone
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/0011—Manufacturing of endoscope parts
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00112—Connection or coupling means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0055—Constructional details of insertion parts, e.g. vertebral elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2476—Non-optical details, e.g. housings, mountings, supports
Abstract
The invention relates to a preparation method for a snake bone device of an endoscope. The snake bone device comprises a snake bone front pitch circle, a snake bone rear pitch circle, connecting pin rolls and a plurality of snake bone middle pitch circles connected between the front pitch circle and the rear pitch circle. The preparation method sequentially comprises the following specific preparation steps: selecting materials; cutting, leveling and polishing the snake bone front pitch circle, the snake bone middle pitch circles and the snake bone rear pitch circle; during shape cutting of the snake bone middle pitch circles and the snake bone rear pitch circle, respectively cutting out a clamping opening which is communicated with a connecting shaft hole, and the corresponding connecting shaft hole; processing and forming the connecting pin rolls by stainless steel wires on a lathe according to drawing requirements; stamping wire penetrating slot openings of the snake bone front pitch circle and the snake bone middle pitch circles by utilizing a special wire penetrating slot forming tool to form axial wire penetrating slots; assembling the snake bone front pitch circle with the snake bone middle pitch circles through the connecting pin roll by virtue of a special assembly tool, and assembling and connecting everytwo snake bone middle pitch circles, as well as the snake bone middle pitch circles and the snake bone rear pitch circle to form a final snake bone device by virtue of the same steps. The preparation method is reasonable in process; and the prepared snake bone does not need to rivet.
Description
Technical field
The present invention relates to a kind of preparation method of accessory of medical or industrial soft endoscope, be specifically related to a kind of preparation method of snake bone device of endoscope.
Background technology
Existing endoscope, when angle of bend realizes head-bent break-in, is all that the method for the steel wire rope be connected with snake bone by tractive by built-in snake bone makes it bending.And before the snake bone that the snake bone in prior art comprises in pitch circle, snake bone pitch circle and pitch circle after snake bone be connected by closing-up successively, due to the preparation method of this closing-up, the following defect of easy appearance, such as, first, the axle center of riveting frock and rivet not same axis or riveting strength excessive, riveted joint place of pitch circle in snake bone will be caused to deform; The second, in riveting process, if riveting pressure is excessive, then surface of the work easily sustains damage or causes rivet to occur the situation of distortion or manufactured head appearance cracking; Three, the workpiece after riveted joint easily occurs that riveted joint is not in place, or riveted joint not firmly phenomenon; Therefore, require higher to the riveting process skill of workman, make production efficiency low, and than being easier to occur the underproof situation of riveting quality, sometimes also there will be the phenomenon that rivet comes off, cause that final finished defect is many, scrappage is high, so just make production cost also higher.
Summary of the invention
The object of the invention is: a kind of rational technology is provided, and obtained snake bone does not need riveted joint, is convenient to assembling, and the preparation method of the snake bone device of the endoscope that production efficiency is high and production cost is low, to overcome the deficiencies in the prior art.
In order to achieve the above object, technical scheme of the present invention is: a kind of preparation method of snake bone device of endoscope, pitch circle in pitch circle after pitch circle, snake bone before described snake bone device comprises snake bone, multiple connection bearing pin and several snake bones before being connected to snake bone after pitch circle and snake bone between pitch circle, concrete preparation process successively:
One, selection:
Before a, described snake bone, in pitch circle, snake bone, pitch circle is consistent with the inside/outside diameter size of pitch circle after snake bone, and what select is stainless steel tube;
What b, connection bearing pin were selected is STAINLESS STEEL WIRE;
Two, the processing method of pitch circle before snake bone:
A, select stainless steel tube, be cut into 100 mm ~ 300mm long;
B, utilize the profile of pitch circle before wire cutting machine tool or laser equipment processing snake bone, comprise the Wire channel in building opening on pitch circle sidewall before rear portion engaging lug and snake bone, meet pitch circle semi-finished product drawing requirement before snake bone;
C, rear portion engaging lug to pitch circle before snake bone, first carry out flattening, then going out rear portion connecting shaft hole, pitch circle finished product to snake bone;
D, polishing is carried out to the finished product of pitch circle before the snake bone machined, remove burr;
Three, the processing method of pitch circle in snake bone:
A, select stainless steel tube, be cut into 100 mm ~ 300mm long;
B, utilize the profile of pitch circle in wire cutting machine tool or laser equipment processing snake bone, comprise the first engaging lug and the second engaging lug, and the Wire channel in building opening in snake bone on pitch circle sidewall, meet pitch circle semi-finished product drawing requirement in snake bone;
C, to the first engaging lug of pitch circle in snake bone and the second engaging lug, first flatten, then the second connecting shaft hole is gone out to the second engaging lug, machine pitch circle finished product to snake bone;
D, polishing is carried out to the finished product of pitch circle in the snake bone machined, remove burr;
Four, the processing method of pitch circle after snake bone:
A, select stainless steel tube, be cut into 100 mm ~ 300mm long;
B, utilize the profile of pitch circle after wire cutting machine tool or laser equipment processing snake bone, comprise anterior engaging lug, meet pitch circle semi-finished product drawing requirement after snake bone;
C, anterior engaging lug to pitch circle after snake bone, flatten, machine pitch circle finished product to snake bone;
D, polishing is carried out to the finished product of pitch circle after the snake bone machined, remove burr;
Its innovative point is:
(1) when, in described snake bone, pitch circle utilizes wire cutting machine tool or laser equipment to process the profile of pitch circle in snake bone, also comprise cut out connect with the first connecting shaft hole of the first engaging lug on pitch circle one end perisporium in snake bone clamp gap and the first connecting shaft hole, meet semi-finished product drawing requirement;
(2) when, after described snake bone, pitch circle utilizes the profile of pitch circle after wire cutting machine tool or laser equipment processing snake bone, also comprise cut out with snake bone after the front portion that connects of the anterior connecting shaft hole of anterior engaging lug on the perisporium of pitch circle one end clamp gap and rear portion connecting shaft hole, meet semi-finished product drawing requirement;
(3), described connection bearing pin comprises the first stop nose, enlarged diameter section, reduced diameter section and the second stop nose, selects stainless steel wire on lathe, by drawing machine-shaping;
(4), utilize special Wire channel in building forming frock to implement punching press to the Wire channel in building opening of pitch circle in pitch circle before snake bone and snake bone, form axial Wire channel in building;
(5), the step of described snake bone assembly connection is as follows:
1., by the rear portion engaging lug of pitch circle before snake bone insert inside the first engaging lug of pitch circle in snake bone, and make the rear portion connecting shaft hole of rear portion engaging lug corresponding with the first connecting shaft hole of the first engaging lug;
2., the second stop nose one end connecting bearing pin is outwards installed from the rear portion connecting shaft hole of pitch circle rear portion engaging lug before snake bone, utilize the location mandril of special assembly tooling will connect the first stop nose position extruding of bearing pin from the rear portion connecting shaft hole of pitch circle before snake bone simultaneously, second stop nose one end of connection bearing pin is made to be subject to outside power, then withstand with the end of the extruded rod with axis hole and the rear portion engaging lug of pitch circle before extruding snake bone, what make pitch circle in snake bone clamps gap spreading to first connecting shaft hole of second stop nose one end through pitch circle in snake bone connecting bearing pin, the inwall of the first stop nose end face and rear portion engaging lug that now connect bearing pin offsets, the reduced diameter section connecting bearing pin is contained in the first connecting shaft hole of pitch circle in snake bone just, clamp gap to reset,
3., pitch circle in pitch circle, snake bone in two snake bones is become final snake bone device with pitch circle assembly connection after snake bone by same step.
In such scheme, when pitch circle utilizes wire cutting machine tool or laser equipment to process the profile of pitch circle in snake bone in described snake bone, also comprise the arc technique gap cutting out pitch circle in snake bone and lean on its root place and clamp the symmetrical layout of gap, meet drawing requirement;
When pitch circle utilizes the profile of pitch circle after wire cutting machine tool or laser equipment processing snake bone after described snake bone, also comprise and cut out pitch circle after snake bone and, by its root place and the anterior arc technique gap clamping the symmetrical layout of gap, meet drawing requirement.
In technique scheme, the workbench of described wire cutting machine tool or laser equipment is provided with Special clamping positioning tool, described Special clamping positioning tool comprises sidepiece reference block, front end reference block and locating piece, workpiece to be cut is placed in the slotting material hole of locating piece, then utilize trip bolt to be fixedly connected with locating piece by workpiece, now, drive locating piece move forward and offset with front end reference block, again locating piece and sidepiece reference block are fitted, finally locating piece is fixed on the table.
In technique scheme, described special Wire channel in building forming frock comprises and is arranged separately at origin reference location die holder on work bench of punch press and casting die holder, and the forming punching head be fixedly connected with punch press drift; Described origin reference location die holder is fixed with Workpiece fixing axle, and Workpiece fixing axle is provided with axial shaping groove, workpiece to be processed is sleeved on Workpiece fixing axle, and the origin reference location that one end of workpiece and Workpiece fixing axle one end are provided with is drawn a circle to approve position and offseted; Described casting die holder is provided with casting die fixed axis, and the casting die centring ring that the other end of workpiece and one end of casting die fixed axis are provided with is located and offseted, and the other end of described casting die fixed axis is provided with casting die locating shaft control handle; Workpiece and origin reference location circle and casting die centring ring are on the same axis.
In technique scheme, described shaping mould comprises the female mold core of leveling snake bone engaging lug, and its interstitial hole is provided with locating shaft location, and have the equiform concave plane with engaging lug in the vertical direction, shaping patrix has the equiform convex flat face with engaging lug.
In technique scheme, described leveling operation is implemented on little punch press lower work platform, on the core rod that workpiece to be flattened is contained in shaping mould and die holder, the equiform convex flat face of the engaging lug the same with shaping patrix is provided with at die holder lower position, when after the downward punching press of punch press, namely complete the leveling operation of workpiece engaging lug.
In technique scheme, the connection bearing pin of described machine-shaping is heat-treated, and reaches 45 ~ 55RHC to intensity, then carries out polishing removal surface scale.
The good effect that the present invention has is: due to pitch circle after pitch circle in described snake bone and snake bone utilize the profile of pitch circle in wire cutting machine tool or laser equipment processing snake bone respectively time, also comprise that the connecting shaft hole that cuts out corresponding and engaging lug connects clamp gap and front portion clamps gap, meet semi-finished product drawing requirement, described connection bearing pin comprises the first stop nose, enlarged diameter section, reduced diameter section and the second stop nose, selects stainless steel wire on lathe, by drawing machine-shaping, during the assembling of snake bone, before snake bone, in pitch circle and snake bone, pitch circle utilizes special assembly tooling to assemble, in snake bone, the first engaging lug and second engaging lug of pitch circle is directly by being connected the rear portion engaging lug of pitch circle before bearing pin and adjacent snake bone respectively, in snake bone, the corresponding engaging lug of pitch circle is connected with the anterior engaging lug of pitch circle after snake bone, and without the need to being connected by closing-up, therefore, be convenient to be equipped with, and there will not be the underproof situation of riveting quality, also there will not be the phenomenon that rivet comes off, make production efficiency high, the assembly quality of final products is good, simultaneously, production cost is also lower, utilize special Wire channel in building forming frock to implement punching press to the Wire channel in building opening of pitch circle in pitch circle before snake bone and snake bone, form axial Wire channel in building, therefore, be convenient to assemble with haulage cable.The preparation method of snake bone of the present invention, not only rational technology, obtained snake bone do not need riveted joint, and there will not be the defect of closing-up preparation method, and production efficiency is high and production cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of detailed description of the invention of the present invention;
Fig. 2 is the A-A cross-sectional schematic of Fig. 1;
Fig. 3 is the B-B cross-sectional schematic of Fig. 1;
Fig. 4 is the C portion enlarged diagram of Fig. 2;
Fig. 5 is the structural representation of pitch circle in snake bone;
Fig. 6 is the D-D cross-sectional schematic of Fig. 5;
Fig. 7 is the structural representation of pitch circle after snake bone;
Fig. 8 is the E-E cross-sectional schematic of Fig. 7;
Fig. 9 is the structural representation of Special clamping positioning tool;
Figure 10 is the F-F cross-sectional schematic of Fig. 9;
Figure 11 is the structural representation of special Wire channel in building forming frock;
Figure 12 is the structural representation of Workpiece fixing axle in Figure 11;
Figure 13 is the structural representation of special assembly tooling.
Detailed description of the invention
Below in conjunction with accompanying drawing and the embodiment that provides, the present invention is further illustrated, but be not limited thereto.
As shown in figs. 1-13, a kind of snake bone device model of endoscope is the preparation method of BS type series, before described snake bone device comprises snake bone, after pitch circle 1, snake bone, pitch circle 3,22 connects pitch circle 2 in bearing pin 4 and 10 snake bones before being connected to snake bone after pitch circle 1 and snake bone between pitch circle 3, concrete preparation process successively:
One, selection and the preparation before processing:
Before a, described snake bone, in pitch circle 1, snake bone, after pitch circle 2 and snake bone, the internal diameter size of pitch circle 3 is external diameter 8.5mm, and internal diameter is 8mm, and what select is stainless steel tube;
What b, connection bearing pin 4 were selected is model is Cr18Ni9T, can certainly select 0Cr18Ni9 or 1Cr17Mn6Ni5N STAINLESS STEEL WIRE;
Preparation before c, processing
As Fig. 9, shown in 10, for the ease of processing, and to the good clamping position of workpiece, the workbench of described wire cutting machine tool or laser equipment is provided with Special clamping positioning tool 10, described Special clamping positioning tool comprises sidepiece reference block 101, front end reference block 102 and locating piece 103, workpiece diameter size to be cut is 8mm, what select is that stainless steel tube is placed in the slotting material hole 1031 of locating piece 103, then in the screw hole 104 utilizing trip bolt to penetrate locating piece 103, workpiece stainless steel tube is fixedly connected with locating piece 103, now, locating piece 103 is driven to move forward and offset with front end reference block 102, again locating piece 103 and sidepiece reference block 101 are fitted, finally locating piece 103 is fixed on the table.
Two, the processing method of pitch circle 1 before snake bone:
A, select stainless steel tube, be cut into 100 mm ~ 300mm long;
B, utilize the profile of pitch circle 1 before stainless steel tube processing snake bone that wire cutting machine tool or the laser equipment internal diameter size to clamping in locating piece 103 fixing is on the table 8mm, comprise the Wire channel in building opening on pitch circle sidewall before rear portion engaging lug 1-1 and snake bone, meet pitch circle 1 semi-finished product drawing requirement before snake bone;
C, rear portion engaging lug 1-1 to pitch circle 1 before snake bone, first carry out flattening, then going out rear portion connecting shaft hole 1-1-1, pitch circle 1 finished product to snake bone;
D, polishing is carried out to the finished product of pitch circle 1 before the snake bone machined, remove burr, make any surface finish;
Three, the processing method of pitch circle 2 in snake bone:
A, select stainless steel tube, be cut into 100 mm ~ 300mm long;
B, utilize the profile of pitch circle 2 in stainless steel tube processing snake bone that wire cutting machine tool or the laser equipment internal diameter size to clamping in locating piece 103 fixing is on the table 8mm, comprise the first engaging lug 2-1 and the second engaging lug 2-2, and the Wire channel in building opening in snake bone on pitch circle sidewall, meet pitch circle 2 semi-finished product drawing requirement in snake bone; Also comprise cut out connect with the first connecting shaft hole 2-1-2 of the first engaging lug 2-1 on pitch circle 2 one end perisporium in snake bone clamp gap 2-1-1 and the first connecting shaft hole 2-1-2, meet semi-finished product drawing requirement; The described radial width clamping gap 2-1-1 is 0.4mm;
Gap is clamped for the ease of spreading, engaging lug is made to have certain elasticity, as shown in Fig. 5,7, when in described snake bone, pitch circle 2 utilizes wire cutting machine tool or laser equipment to process the profile of pitch circle in snake bone, also comprise and cut out in snake bone pitch circle 2 by its root place and the arc technique gap 6 clamping the symmetrical layout of gap 2-1-1, meet drawing requirement;
C, to the first engaging lug 2-1 of pitch circle 2 in snake bone and the second engaging lug 2-2, first flatten, then the second connecting shaft hole 2-2-1 is gone out to the second engaging lug 2-2, machine pitch circle 2 finished product to snake bone;
D, polishing is carried out to the finished product of pitch circle 2 in the snake bone machined, remove burr, make any surface finish;
Four, the processing method of pitch circle 3 after snake bone:
A, select stainless steel tube, be cut into 100 mm ~ 300mm long;
B, utilize the profile of pitch circle after stainless steel tube processing snake bone that wire cutting machine tool or the laser equipment internal diameter size to clamping in locating piece 103 fixing is on the table 8mm, comprise anterior engaging lug 3-1, meet pitch circle 3 semi-finished product drawing requirement after snake bone; Also comprise cut out with snake bone after the front portion that connects of the anterior connecting shaft hole 3-1-2 of anterior engaging lug 3-1 on the perisporium of pitch circle 3 one end clamp gap 3-1-1 and rear portion connecting shaft hole 3-1-2, meet semi-finished product drawing requirement; The radial width that described front portion clamps gap 3-1-1 is 0.4mm;
Clamp gap for the ease of spreading, make engaging lug have certain elasticity, also comprise and cut out after snake bone pitch circle 3 by its root place and the anterior arc technique gap 6 clamping the symmetrical layout of gap 3-1-1, meet drawing requirement.The width of described arc technique gap 6 is 0.9mm.
C, anterior engaging lug 3-1 to pitch circle 3 after snake bone, flatten, machine pitch circle 3 finished product to snake bone;
D, polishing is carried out to the finished product of pitch circle 3 after the snake bone machined, remove burr, make any surface finish;
Five, the processing method of bearing pin 4 is connected:
Described connection bearing pin 4 comprises the first stop nose 4-1, enlarged diameter section 4-2, reduced diameter section 4-3 and the second stop nose 4-4, selects stainless steel wire on lathe, by drawing machine-shaping; In order to make the hardness connecting bearing pin 4 good, the connection bearing pin 4 of described machine-shaping is heat-treated, and hardness reaches 45 ~ 55RHC, then carries out polishing removal surface scale.
Six, Wire channel in building 5 is gone out to pitch circle 2 in pitch circle 1 before snake bone and snake bone
Utilize the Wire channel in building opening of pitch circle 2 in pitch circle 1 and snake bone before special Wire channel in building forming frock 30 pairs of snake bones to implement punching press, form axial Wire channel in building 5;
As shown in Figure 11,12, for the ease of going out Wire channel in building 5, described special Wire channel in building forming frock 30 comprises and is arranged separately at origin reference location die holder 301 on work bench of punch press and casting die holder 302, and the forming punching head 303 be fixedly connected with punch press drift; Described origin reference location die holder 301 is fixed with Workpiece fixing axle 304, and Workpiece fixing axle 304 is provided with axial shaping groove 3041, workpiece to be processed is sleeved on Workpiece fixing axle 304, and the origin reference location circle 308 that one end of workpiece and Workpiece fixing axle 304 one end are provided with is located and offseted; Described casting die holder 302 is provided with casting die fixed axis 305, and the casting die centring ring 306 that the other end of workpiece and one end of casting die fixed axis 305 are provided with is located and offseted, and the other end of described casting die fixed axis 305 is provided with casting die locating shaft control handle 307; Workpiece and origin reference location circle 308 and casting die centring ring 306 are on the same axis.The holder of described lathe is logical to be threaded with forming punching head holder 309, and forming punching head 303 mistake trip bolt is fixedly connected with forming punching head holder 309.In specific operation process, when manipulation casting die locating shaft control handle 307 is with horizontal plane, casting die fixed axis 305 moves right, and casting die centring ring 306 and workpiece are offseted, again during rotary pressing member locating shaft control handle 307, casting die fixed axis 305 is moved to the left, and casting die centring ring 306 is separated with workpiece.
Seven, the step of described snake bone assembly connection is as follows:
1., by inside the first engaging lug 2-1 of pitch circle 2 in the rear portion engaging lug 1-1 of pitch circle 1 before snake bone insertion snake bone, and make the rear portion connecting shaft hole 1-1-1 of rear portion engaging lug 1-1 corresponding with the first connecting shaft hole 2-1-2 of the first engaging lug 2-1;
2., the second stop nose 4-4 one end connecting bearing pin 4 is outwards installed from the rear portion connecting shaft hole 1-1-1 of pitch circle 1 rear portion engaging lug 1-1 before snake bone, utilize the location mandril 201 of special assembly tooling 20 will connect the first stop nose 4-1 position extruding of bearing pin 4 from the rear portion connecting shaft hole 1-1-1 of pitch circle 1 before snake bone simultaneously, second stop nose 4-4 one end of connection bearing pin 4 is made to be subject to outside power, then withstand with the end of the extruded rod 202 with axis hole and the rear portion engaging lug 1-1 of pitch circle 1 before extruding snake bone, what make pitch circle 2 in snake bone clamps gap 2-1-1 spreading to the first connecting shaft hole 2-1-2 of second stop nose 4-4 one end through pitch circle 2 in snake bone connecting bearing pin 4, now connection the first stop nose 4-1 end face of bearing pin 4 and the inwall of rear portion engaging lug 1-1 offset, the reduced diameter section 4-3 connecting bearing pin 4 is contained in the first connecting shaft hole 2-1-2 of pitch circle 2 in snake bone just, clamp gap 2-1-1 to reset,
3., pitch circle in pitch circle, snake bone in two snake bones is become final snake bone device with pitch circle assembly connection after snake bone by same step.
4., snake bone finally assemble complete after, in order to improve the fastness after the assembling of snake bone and the bonding strength of engaging lug further, can argon arc welding arc technique gap 6.
Shaping mould of the present invention comprises the female mold core of leveling snake bone engaging lug, and its interstitial hole is provided with locating shaft location, and have the equiform concave plane with engaging lug in the vertical direction, shaping patrix has the equiform convex flat face with engaging lug.Described leveling operation is implemented on little punch press lower work platform, on the core rod that workpiece to be flattened is contained in shaping mould and die holder, the equiform convex flat face of the engaging lug the same with shaping patrix is provided with at die holder lower position, when after the downward punching press of punch press, namely complete the leveling operation of workpiece engaging lug.
The concrete steps of described shaping are: by the locating shaft orientation assemble of the workpiece and female mold core for the treatment of shaping, and the engaging lug of workpiece and concave plane orientation assemble, and the convex flat face male-female engagement of the concave plane of female mold core and shaping counterdie, when after the downward punching press of punch press, the convex flat face that shaping is touched and the concave plane male-female engagement of female mold core, implement leveling to the engaging lug of workpiece.
Before snake bone to machining of the present invention, in pitch circle 1, snake bone, after pitch circle 2 and snake bone, the polishing of the finished product of pitch circle 3 can be chemical polishing process, also can be by polishing machine polishing.
Preparation method of the present invention, not only rational technology, and obtained snake bone does not need riveted joint, is convenient to be equipped with, also there will not be riveting quality defective and occur the phenomenon that rivet comes off, make production efficiency high, the assembly quality of final products is good, meanwhile, production cost is also lower.
Claims (7)
1. the preparation method of the snake bone device of an endoscope, pitch circle (2) in pitch circle (3) after pitch circle (1), snake bone before described snake bone device comprises snake bone, multiple connection bearing pin (4) and several snake bones before being connected to snake bone after pitch circle (1) and snake bone between pitch circle (3), concrete preparation process successively:
One, selection:
Before a, described snake bone, in pitch circle (1), snake bone, pitch circle (2) is consistent with the inside/outside diameter size of pitch circle (3) after snake bone, and what select is stainless steel tube;
What b, connection bearing pin (4) were selected is STAINLESS STEEL WIRE;
Two, the processing method of pitch circle (1) before snake bone:
A, select stainless steel tube, be cut into 100 mm ~ 300mm long;
B, utilize the profile of pitch circle before wire cutting machine tool or laser equipment processing snake bone, comprise the Wire channel in building opening on pitch circle sidewall before rear portion engaging lug (1-1) and snake bone, meet pitch circle (1) semi-finished product drawing requirement before snake bone;
C, rear portion engaging lug (1-1) to pitch circle (1) before snake bone, first carry out flattening, then going out rear portion connecting shaft hole (1-1-1), pitch circle (1) finished product to snake bone;
D, polishing is carried out to the finished product of pitch circle (1) before the snake bone machined, remove burr;
Three, the processing method of pitch circle (2) in snake bone:
A, select stainless steel tube, be cut into 100 mm ~ 300mm long;
B, utilize the profile of pitch circle in wire cutting machine tool or laser equipment processing snake bone, comprise the first engaging lug (2-1) and the second engaging lug (2-2), and the Wire channel in building opening in snake bone on pitch circle sidewall, meet pitch circle (2) semi-finished product drawing requirement in snake bone;
C, to first engaging lug (2-1) of pitch circle (2) in snake bone and the second engaging lug (2-2), first flatten, then the second connecting shaft hole (2-2-1) is gone out to the second engaging lug (2-2), machine pitch circle (2) finished product to snake bone;
D, polishing is carried out to the finished product of pitch circle (2) in the snake bone machined, remove burr;
Four, the processing method of pitch circle (3) after snake bone:
A, select stainless steel tube, be cut into 100 mm ~ 300mm long;
B, utilize the profile of pitch circle after wire cutting machine tool or laser equipment processing snake bone, comprise anterior engaging lug (3-1), meet pitch circle (3) semi-finished product drawing requirement after snake bone;
C, anterior engaging lug (3-1) to pitch circle (3) after snake bone, flatten, machine pitch circle (3) finished product to snake bone;
D, polishing is carried out to the finished product of pitch circle (3) after the snake bone machined, remove burr;
It is characterized in that:
(1) when, in described snake bone, pitch circle (2) utilizes wire cutting machine tool or laser equipment to process the profile of pitch circle in snake bone, also comprise cut out connect with first connecting shaft hole (2-1-2) of the first engaging lug (2-1) on pitch circle (2) one end perisporium in snake bone clamp gap (2-1-1) and the first connecting shaft hole (2-1-2), meet semi-finished product drawing requirement;
(2) when, after described snake bone, pitch circle (3) utilizes the profile of pitch circle after wire cutting machine tool or laser equipment processing snake bone, also comprise cut out with snake bone after the front portion that connects of the anterior connecting shaft hole (3-1-2) of anterior engaging lug (3-1) on the perisporium of pitch circle (3) one end clamp gap (3-1-1) and rear portion connecting shaft hole (3-1-2), meet semi-finished product drawing requirement;
(3), described connection bearing pin (4) comprises the first stop nose (4-1), enlarged diameter section (4-2), reduced diameter section (4-3) and the second stop nose (4-4), selects stainless steel wire on lathe, by drawing machine-shaping;
(4), utilize special Wire channel in building forming frock (30) to implement punching press to the Wire channel in building opening of pitch circle (2) in pitch circle (1) before snake bone and snake bone, form axial Wire channel in building (5);
(5), the step of described snake bone assembly connection is as follows:
1., by the rear portion engaging lug (1-1) of pitch circle (1) before snake bone insert the first engaging lug (2-1) inner side of pitch circle (2) in snake bone, and make the rear portion connecting shaft hole (1-1-1) of rear portion engaging lug (1-1) corresponding with first connecting shaft hole (2-1-2) of the first engaging lug (2-1);
2., the second stop nose (4-4) one end connecting bearing pin (4) is outwards installed from the rear portion connecting shaft hole (1-1-1) at pitch circle (1) rear portion engaging lug (1-1) before snake bone, utilize the location mandril of special assembly tooling (20) (201) that the first stop nose (4-1) the position extruding of bearing pin (4) will be connected from the rear portion connecting shaft hole (1-1-1) of pitch circle (1) before snake bone simultaneously, the second stop nose (4-4) one end of connection bearing pin (4) is made to be subject to outside power, then withstand with the end of the extruded rod (202) with axis hole and the rear portion engaging lug (1-1) of pitch circle (1) before extruding snake bone, what make pitch circle (2) in snake bone clamps gap (2-1-1) spreading to first connecting shaft hole (2-1-2) of the second stop nose (4-4) one end through pitch circle (2) in snake bone connecting bearing pin (4), the inwall of the first stop nose (4-1) end face and rear portion engaging lug (1-1) that now connect bearing pin (4) offsets, the reduced diameter section (4-3) connecting bearing pin (4) is contained in first connecting shaft hole (2-1-2) of pitch circle (2) in snake bone just, clamp gap (2-1-1) to reset,
3., pitch circle in pitch circle, snake bone in two snake bones is become final snake bone device with pitch circle assembly connection after snake bone by same step.
2. the preparation method of the snake bone device of endoscope according to claim 1, is characterized in that:
When in described snake bone, pitch circle (2) utilizes wire cutting machine tool or laser equipment to process the profile of pitch circle in snake bone, also comprise and to cut out in snake bone pitch circle (2) by its root place and the arc technique gap (6) clamping gap (2-1-1) symmetrical layout, meet drawing requirement;
When after described snake bone, pitch circle (3) utilizes the profile of pitch circle after wire cutting machine tool or laser equipment processing snake bone, also comprise and cut out the arc technique gap (6) that pitch circle (3) clamps gap (3-1-1) symmetrical layout by its root place and front portion after snake bone, meet drawing requirement.
3. the preparation method of the snake bone device of endoscope according to claim 1, it is characterized in that: the workbench of described wire cutting machine tool or laser equipment is provided with Special clamping positioning tool (10), described Special clamping positioning tool comprises sidepiece reference block (101), front end reference block (102) and locating piece (103), workpiece to be cut is placed in the slotting material hole (1031) of locating piece (103), then trip bolt is utilized to be fixedly connected with locating piece (103) by workpiece, now, locating piece (103) is driven to move forward and offset with front end reference block (102), again locating piece (103) and sidepiece reference block (101) are fitted, finally locating piece (103) is fixed on the table.
4. the preparation method of the snake bone device of endoscope according to claim 1, it is characterized in that: described special Wire channel in building forming frock (30) comprises and is arranged separately at origin reference location die holder (301) on work bench of punch press and casting die holder (302), and the forming punching head (303) be fixedly connected with punch press drift; Described origin reference location die holder (301) is fixed with Workpiece fixing axle (304), and Workpiece fixing axle (304) is provided with axial shaping groove (3041), workpiece to be processed is sleeved on Workpiece fixing axle (304), and the origin reference location circle (308) that one end of workpiece and Workpiece fixing axle (304) one end are provided with is located and offseted; Described casting die holder (302) is provided with casting die fixed axis (305), the casting die centring ring (306) that the other end of workpiece and one end of casting die fixed axis (305) are provided with is located and is offseted, and the other end of described casting die fixed axis (305) is provided with casting die locating shaft control handle (307); Workpiece and origin reference location circle (308) and casting die centring ring (306) are on the same axis.
5. the preparation method of the snake bone device of endoscope according to claim 1, it is characterized in that: described shaping mould comprises the female mold core of leveling snake bone engaging lug, its interstitial hole is provided with locating shaft location, have the equiform concave plane with engaging lug in the vertical direction, shaping patrix has the equiform convex flat face with engaging lug.
6. the preparation method of the snake bone device of endoscope according to claim 5, it is characterized in that: described leveling operation is implemented on little punch press lower work platform, on the core rod that workpiece to be flattened is contained in shaping mould and die holder, the equiform convex flat face of the engaging lug the same with shaping patrix is provided with at die holder lower position, when after the downward punching press of punch press, namely complete the leveling operation of workpiece engaging lug.
7. the preparation method of the snake bone device of endoscope according to claim 1, is characterized in that: the connection bearing pin (4) of described machine-shaping is heat-treated, and reaches 45 ~ 55RHC to intensity, then carries out polishing removal surface scale.
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| CN201510207482.2A CN104999221B (en) | 2015-04-28 | 2015-04-28 | The preparation method of the snake bone device of endoscope |
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| CN109254395A (en) * | 2018-11-06 | 2019-01-22 | 杭州鑫泽源精密制品有限公司 | A kind of four direction industrial endoscope snake bones of micromation |
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| CN117798864B (en) * | 2024-02-27 | 2024-05-03 | 杭州鑫泽源医疗科技有限公司 | Snake bone processing device |
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