CN214392430U - Drilling guide tool for processing fork coaxial hole in narrow space - Google Patents
Drilling guide tool for processing fork coaxial hole in narrow space Download PDFInfo
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- CN214392430U CN214392430U CN202022481021.3U CN202022481021U CN214392430U CN 214392430 U CN214392430 U CN 214392430U CN 202022481021 U CN202022481021 U CN 202022481021U CN 214392430 U CN214392430 U CN 214392430U
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Abstract
The utility model discloses a drilling guide tool for processing fork coaxial holes in narrow space, which comprises a bracket, a quick-change drill bushing, a pressing plate, support nails, a bottom plate, a drill bushing, diamond pins and cylindrical pins, wherein two ends of the surface of the bottom plate sink to form a bracket mounting surface, the middle of the surface of the bottom plate is a supporting surface, an upward convex main positioning surface is arranged between the supporting surface and the two bracket mounting surfaces, the bracket is symmetrically mounted on the two bracket mounting surfaces, the pressing plate is symmetrically arranged on the bottom plate, one end of the pressing plate is supported by the support nails arranged on the supporting surface, the other end of the pressing plate is fixed on the main positioning surface by a stud, the diamond pins and the cylindrical pins are respectively arranged on the two main positioning surfaces, the bracket is of a Chinese character 'shan' shaped structure and comprises a base, two front guide areas and a rear guide area arranged between the two front guide areas, coaxial through holes are arranged on the front guide areas and the rear guide areas, the quick-change drill bushing is symmetrically arranged on the through holes of the two front guide areas, the drill sleeve is arranged in the through hole of the rear guide area, and the drill sleeve can slide in the through hole of the rear guide area.
Description
Technical Field
The utility model relates to a machining technical field, concretely relates to utensil is led in drilling of narrow space processing fork coaxial hole.
Background
The fork coaxial hole structure is a commonly-used machined part structure, and the machining scheme of the structure preferentially selects to finish machining of the fork and the hole by using numerical control machining and clamping once, but the machining scheme is not suitable for parts which are complex in structure and interfere with numerical control machining tracks, and is also not suitable for parts which cannot be machined on a machine tool due to limited machining environment; the automatic inclinator rotating disc for key parts of a certain type of lift system has 10 coaxial hole structures with fork openings, wherein 8 parts are processed by a turn-milling center in a numerical control mode, 2 parts have narrow processing areas due to self-interference numerical control processing tracks, the fork openings can only be processed at the turn-milling center, the coaxial holes need to be processed by a bending drill manually, and the processing of the two coaxial holes becomes the difficulty in product processing.
The existing drilling guide structure and drilling processing technology are searched, and the fact that the similar existing technology has no special requirements on operation space is found, the guide is also suitable for machine tool equipment to process and drill holes and is not suitable for complex structure drilling with operation space limitation; therefore, a drilling guide tool needs to be designed, limited operation space is fully utilized for positioning and guiding, an operator can conveniently use a bending drill to process the fork coaxial hole, a reasonable drilling process scheme is formulated, the precision required by design after hole processing is met, and the drilling guide tool has important significance in the product development and batch production processes.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose: the utility model provides a pair of at the utensil is led in drilling of narrow space processing fork coaxial hole, the limited space of usable product is fixed a position and is guided, makes things convenient for the operator to use the curved manual operation that bores, formulates reasonable processing method simultaneously, satisfies processing back size and axiality requirement.
The technical scheme of the utility model:
a drilling guide tool for processing a fork coaxial hole in a narrow space comprises a support, a quick-change drill bushing, a pressing plate, support nails, a bottom plate, a drill bushing, two diamond-shaped pins, a first cylindrical pin and a second cylindrical pin, wherein the bottom plate is a main body of the drilling guide tool, two ends of the surface of the bottom plate sink to form support mounting surfaces, a supporting surface is arranged in the middle of the surface of the bottom plate, an upward convex main positioning surface is arranged between the supporting surface and the two support mounting surfaces, the two supports are symmetrically mounted on the two support mounting surfaces, the two pressing plates are symmetrically arranged on the bottom plate, one end of each pressing plate is supported by the support nails arranged on the supporting surface, the other end of each pressing plate is fixed on the main positioning surface through double-headed studs, the diamond-shaped pins and the first cylindrical pins are respectively arranged on the two main positioning surfaces, the support 1 is of a Chinese character 'shan' shaped structure and comprises a base, The quick-change drill bushing is characterized by comprising two front guide areas and a rear guide area arranged between the two front guide areas, coaxial through holes are formed in the front guide areas and the rear guide area, the quick-change drill bushings are symmetrically arranged on the through holes of the two front guide areas, the drill bushings are arranged in the through holes of the rear guide area, and the drill bushings can slide in the through holes of the rear guide area.
Furthermore, a screw hole is formed in the front guide area and is located at the lower portion of the through hole of the front guide area, and a screw is arranged in the screw hole and is used for limiting the movement of the quick-change drill bushing.
Furthermore, the pressing plate pressing device further comprises a hexagonal nut with a shoulder, wherein the hexagonal nut with the shoulder is arranged at the upper end of the stud and used for pressing the pressing plate.
Furthermore, the thin nut of hexagonal still includes, thin nut of hexagonal set up at the stud lower extreme for the restriction stud reciprocates.
The bracket is fixed on the bracket mounting surface through the slotted cylindrical head screw and the second cylindrical pin.
Furthermore, the quick-change drill bushing is a convex shoulder bushing, a convex shoulder of the convex shoulder bushing is provided with a limiting surface, and the limiting surface is in contact with a screw to limit the movement of the quick-change drill bushing.
The beneficial effects of the utility model
(1) The method is suitable for operation and processing in a narrow and limited area: the invention realizes the processing of fork coaxial holes in a narrow space so as to process a space limited area which can not be processed by the existing machine tool equipment;
(2) the U type structure of fork mouth is processed in the cooperation, and the guide region is fully compressed, forms effectual preceding, back guide region: the support 1 is designed into a Chinese character 'shan' structure and is divided into two front guide areas and a rear guide area, the front guide areas at the two ends of the support 1 are provided with the quick-change drill bushings 2, the rear guide area in the middle is provided with the drill bushings 7, the quick-change drill bushings 2 are used for guiding before drilling, the drill bushings 7 are used for guiding after drilling, and the front guide and the rear guide cooperate to ensure the coaxiality requirement of drilling;
(3) the innovative sliding drill bushing 7 guide design shortens the drilling track stroke, eliminates no guide clearance: because only the quick-change drill bushing 2 is used as front guide when drilling a primary hole, the drill bushing 7 can not be used for back guide, the axle center of the primary hole has deviation with the theoretical axis, the deviation needs to be aligned after reaming, which puts forward higher requirements for the design of the back guide of reaming, the traditional back guide structure guide bushing is fixed, the fixed guide bushing can interfere with the guide of the reaming drill and the cutting edge of the drill under the limit of the limited fork width, the utility model discloses the guide is designed into the slidable drill bushing 7, when reaming begins, the drill bushing 7 slides to be close to the drilling measurement along the through hole on the back guide area of the bracket 1, the shortest guide distance can be ensured, and in the reaming process, the drill bushing 7 slides along the drilling track, and the interference with the cutting edge can be avoided;
(4) the design of the independent guide drill sleeve is convenient for operation and repair: the wearing and tearing region of utensil is led for processing guide area to the drilling, the utility model discloses design detachable quick change drill bushing 2 and drill bushing 7 with guide structure, even frequently use, only can wear and tear quick change drill bushing 2 and drill bushing 7, can not wear and tear the main part, repair drilling and lead the utensil and only need change the quick change drill bushing 2 and the drill bushing 7 of making simply, a set of quick change drill bushing 2 and drill bushing 7 of joining in marriage more can satisfy the continuous use of drilling guide, can not lead the utensil to reprocess and restrict production because of drilling.
Drawings
FIG. 1 is a front view of the overall construction of a drill guide;
FIG. 2 is a top view of the overall construction of the drill guide;
FIG. 3 is an isometric view of a bracket;
FIG. 4 is an isometric view of the base plate;
FIG. 5 is an isometric view of a quick-change drill sleeve;
FIG. 6 is a top view of the drill guide after installation in engagement with a work product;
FIG. 7 is an enlarged view of the drilling operation area;
wherein: 1. the quick-change drill jig comprises a support, 2, a quick-change drill bushing, 3, a screw, 4, a pressing plate, 5, a supporting nail, 6, a bottom plate, 7, a drill bushing, 8, a hexagonal nut with shoulder, 9, a slotted cylindrical head screw, 10, a second cylindrical pin, 11, a stud, 12, a thin hexagonal nut, 13, a diamond-shaped pin, 14, a first cylindrical pin, 15, a support mounting surface, 16, a supporting surface, 17, a main positioning surface, 18, a base, 19, a front guide area, 20 and a rear guide area.
Detailed Description
The following detailed description of the embodiments of the present invention, such as the shapes, structures, mutual positions and connection relationships of the components, functions and working principles of the components, manufacturing processes, operation and use methods, will be further described in detail with reference to the accompanying drawings, so as to help those skilled in the art to more completely, accurately and deeply understand the concept and technical solutions of the present invention:
as shown in fig. 1 and 2, a drilling guide tool for processing a coaxial hole of a fork opening in a narrow space is characterized by comprising a bracket 1, a quick-change drill bushing 2, a screw 3, a pressure plate 4, a support nail 5, a bottom plate 6, a drill bushing 7, a hexagonal nut with shoulder 8, a slotted cylinder head screw 9, a second cylindrical pin 10, a stud 11, a thin hexagonal nut 12, a diamond-shaped pin 13 and a first cylindrical pin 14; as shown in fig. 4, the bottom plate 6 is a main body of the drilling guide, two ends of the bottom plate are sunken to form a support mounting surface, the convex plane is a main determined plane, the main positioning surface is provided with 2 holes for respectively fixing the diamond pins 13 and the first cylindrical pins 14 for positioning, the main positioning surface is simultaneously provided with 2 threaded holes for connecting the stud 11, the hexagon thin nuts 12, the pressing plate 4, the support nails 5 and the hexagon nuts with shoulders 8 to form a pressing plate pressing structure, the middle plane is a supporting surface, the support mounting surfaces at two ends of the bottom plate 6 are respectively provided with 4 threaded holes and 1 pin hole, and the support 1 is connected and fixed through the slotted cylinder head screws 9 and the second cylindrical pins 10; the support 1 is as shown in fig. 3, the structure of a Chinese character 'shan' includes a base, two front guide areas located on the outer side and a rear guide area located in the middle, the front guide areas and the rear guide areas are in clearance fit with a fork U-shaped structure for processing a coaxial hole, through holes are designed along the axial direction of the coaxial hole, the through holes of the two front guide areas are provided with the quick-change drill bushings 2, the quick-change drill bushings 2 are as shown in fig. 5, the end faces of the front guide areas at the two ends of the support 1 are screwed into screws 3 to limit the quick-change drill bushings 2 from rotating, and the hole in the middle of the support is provided with a drill bushing 7.
The chevron structure support 1 cooperates with U type structure fork mouth, and preceding, back guide structure design are constituteed with quick change drill bushing 2, drill bushing 7: as shown in fig. 6 and 7, after the drilling guide is installed, the U-shaped structure of the product fork is embedded into the chevron structure of the bracket 1, the limited space around the fork is fully utilized by the structure, and the guide structure is compressed, namely, the operation and processing stroke a is increased in the limited space.
As shown in fig. 6, a processing method for processing a coaxial hole of a fork in a narrow space is based on theoretical calculation and batch verification: the processing sequence of the primary hole, the reaming, the primary reaming, the semi-fine reaming and the fine reaming is obtained through theoretical derivation and actual verification, firstly, the size of the final fine reaming is the product required size phi 11.8, the reaming amount of the fine reaming is 0.1, the reaming amount of the semi-fine reaming is 0.1, the reaming amount of the primary reaming is 0.2, the machining amount of the reaming drill is 2.6, the reasonable machining amount of the reaming drill is most critical, after the reaming step is started before, the axial deviation of the primary hole is eliminated, meanwhile, the machining allowance of the primary reaming is determined, and after the machining amount of the reaming drill is determined, the theoretical values of the machining sizes of all the steps are calculated to be the drilling primary hole phi 8.8, the reaming phi 11.4, the primary reaming hole phi 11.6, the semi-fine reaming hole 11.7 and the fine reaming hole phi 11.8;
the first embodiment is as follows:
the invention is used for processing the fork coaxial holes of the automatic inclinator rotary disk of key parts of a certain series of helicopter lift systems, the rotary disk has a complex structure, spare parts are processed in recent years, and the batch production quantity is large (2020 plans to produce 130 spare parts).
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (6)
1. The utility model provides a utensil is led in drilling of the coaxial hole of narrow space processing fork which characterized in that: the drilling guide tool comprises a support (1), a quick-change drill bushing (2), a pressing plate (4), supporting nails (5), a bottom plate (6), a drill bushing (7), a diamond-shaped pin (13) and a first cylindrical pin (14), wherein the bottom plate (6) is a main body of the drilling guide tool, two ends of the surface of the bottom plate (6) are sunken to form support mounting surfaces (15), a supporting surface (16) is arranged in the middle of the surface of the bottom plate (6), an upward convex main positioning surface (17) is arranged between the supporting surface (16) and the two support mounting surfaces (15), the two supports (1) are symmetrically arranged on the two support mounting surfaces (15), the two pressing plates (4) are symmetrically arranged on the bottom plate (6), one end of each pressing plate (4) is supported by the supporting nails (5) arranged on the supporting surface (16), and the other end of each pressing plate is fixed on the main positioning surface (17) by a stud (11), the quick-change drill sleeve is characterized in that the diamond pins (13) and the first cylindrical pins (14) are respectively arranged on two main positioning surfaces (17), the support (1) is of a structure in a shape like a Chinese character 'shan', and comprises a base (18), two front guide areas (19) and a rear guide area (20) arranged between the two front guide areas (19), coaxial through holes are formed in the front guide areas (19) and the rear guide area (20), the quick-change drill sleeves (2) are symmetrically arranged on the through holes of the two front guide areas (19), the drill sleeves (7) are arranged in the through holes of the rear guide areas (20), and the drill sleeves (7) can slide in the through holes of the rear guide areas (20).
2. The drill guide tool for machining a coaxial hole of a fork opening in a narrow space as claimed in claim 1, wherein: the quick-change drill sleeve is characterized in that a screw hole is formed in the front guide area (19), the screw hole is located in the lower portion of the through hole of the front guide area (19), and a screw (3) is arranged in the screw hole and used for limiting the movement of the quick-change drill sleeve (2).
3. The drill guide tool for machining a coaxial hole of a fork opening in a narrow space as claimed in claim 1, wherein: still include area shoulder hexagon nut (8), area shoulder hexagon nut (8) set up in stud (11) upper end for compress tightly clamp plate (4).
4. The drill guide tool for machining a coaxial hole of a fork opening in a narrow space as claimed in claim 1, wherein: the novel double-end bolt is characterized by further comprising a thin hexagonal nut (12), wherein the thin hexagonal nut (12) is arranged at the lower end of the double-end bolt (11) and used for limiting the double-end bolt (11) to move up and down.
5. The drill guide tool for machining a coaxial hole of a fork opening in a narrow space as claimed in claim 1, wherein: the support is characterized by further comprising a slotted cylindrical head screw (9) and a second cylindrical pin (10), and the support (1) is fixed on the support mounting surface (15) through the slotted cylindrical head screw (9) and the second cylindrical pin (10).
6. The drill guide tool for machining a coaxial hole of a fork in a narrow space as claimed in claim 1 or 2, wherein: the quick-change drill bush (2) is a convex shoulder bush, a convex shoulder of the convex shoulder bush is provided with a limiting surface, and the limiting surface is in contact with the screw (3) to limit the movement of the quick-change bush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022481021.3U CN214392430U (en) | 2020-10-30 | 2020-10-30 | Drilling guide tool for processing fork coaxial hole in narrow space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022481021.3U CN214392430U (en) | 2020-10-30 | 2020-10-30 | Drilling guide tool for processing fork coaxial hole in narrow space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214392430U true CN214392430U (en) | 2021-10-15 |
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ID=78034086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022481021.3U Active CN214392430U (en) | 2020-10-30 | 2020-10-30 | Drilling guide tool for processing fork coaxial hole in narrow space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214392430U (en) |
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2020
- 2020-10-30 CN CN202022481021.3U patent/CN214392430U/en active Active
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