CN219052983U

CN219052983U - Position accuracy controllable combination drilling device

Info

Publication number: CN219052983U
Application number: CN202223302226.6U
Authority: CN
Inventors: 胡博闻
Original assignee: South China Aircraft Industry Co Ltd of China Aviation Industry General Aircraft Co Ltd
Current assignee: South China Aircraft Industry Co Ltd of China Aviation Industry General Aircraft Co Ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-05-23
Anticipated expiration: 2032-12-08

Abstract

The utility model discloses a combined drilling device with controllable position precision, and belongs to the technical field of drilling tools. The combined drilling device comprises a drilling template, a drilling sleeve, a positioning taper pin and a fixing screw; the drill bushing is detachably pressed in the drilling hole position of the drill plate through the fixing screw; the drill sleeve is internally provided with a through pin hole, and the positioning taper pin is detachably and concentrically arranged in the pin hole of the drill sleeve. According to the utility model, the rapid positioning of the workpiece mounting hole site is realized by utilizing the drill jig plate and the positioning taper pin, the hole spacing between the drill jig plate and the workpiece prefabricated hole or the process hole can be adjusted by utilizing the positioning taper pin, the smooth assembly of the final hole site obtained after adjustment can be ensured, the structure is simple, the operation is convenient, the rapid positioning and the precision inspection of the workpiece hole site can be realized, and the application range is wide.

Description

Position accuracy controllable combination drilling device

Technical Field

The utility model relates to the technical field of drilling tools, in particular to a combined drilling device with controllable position precision.

Background

When a workpiece with uneven hole positions is used for hole forming on a plurality of discontinuous mounting seats, the workpiece can not be directly positioned due to space limitation, so that the hole forming is usually carried out in a mode of reaming after the hole is formed in the drilling process of a drilling jig in the industry. Compared with the method using the jig, the method of prefabricating holes on the mounting seats can improve production efficiency and save production cost, but due to errors in assembly precision among a plurality of mounting seats, the method of prefabricating holes easily causes mismatch between the holes on the mounting seats and the holes on actual parts, so that the subsequent assembly is problematic.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide the combined drilling device with controllable position precision, which has the advantages of simple structure and convenient operation, can realize the rapid positioning of the hole sites by utilizing the positioning taper pin and the drilling jig, effectively ensures that the adjusted hole sites can be assembled smoothly by adjusting the deviation between the hole sites on the part by utilizing the positioning taper pin, and improves the assembly precision of the part.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

the combined drilling device with the controllable position precision comprises a drilling template, a drilling sleeve, a positioning taper pin and a fixing screw; the drill bushing is detachably pressed in the drilling hole position of the drill plate through the fixing screw; the drill sleeve is internally provided with a through pin hole, and the positioning taper pin is detachably and concentrically arranged in the pin hole of the drill sleeve.

As a preferred embodiment of the utility model, the positioning taper pin comprises a pin cap boss and a pin body integrally formed with the pin cap boss, wherein the pin body consists of a thick cylindrical section, a taper section and a thin cylindrical section which are sequentially connected.

As a preferable embodiment of the utility model, the axial lengths C of the thick cylindrical section, the conical section and the thin cylindrical section are equal, and the axial length C is more than or equal to the accumulated value of the thickness of the drill plate and the thickness of the workpiece.

As a preferred embodiment of the utility model, the diameter B of the thick cylindrical section is equal to the inner diameter of the pin hole of the drill sleeve, the radial dimension of the conical section is uniformly transited along the axial direction, and the diameter A of the thin cylindrical section is half of the difference value between the diameter B of the final hole.

As a preferred embodiment of the present utility model, the thick cylindrical section is provided with a size scale mark, and the length of the size scale mark is equal to the axial length C.

As a preferred embodiment of the present utility model, the outer circumferential surface of the pin cap boss is provided with knurling.

In a preferred embodiment of the present utility model, the drill plate is provided with a lightening hole.

In a preferred embodiment of the present utility model, the drill bushing is provided with a relief portion.

Compared with the prior art, the utility model has the beneficial effects that:

according to the combined drilling device, the rapid positioning of the workpiece mounting hole site is realized by utilizing the drilling template and the positioning taper pin; for a workpiece with a prefabricated hole or a process hole, the hole spacing between the drill plate and the workpiece prefabricated hole or the process hole is adjusted by utilizing the locating taper pin, so that the smooth assembly of the final hole position obtained after adjustment is ensured, the deviation value of the workpiece prefabricated hole or the process hole can be determined by carrying out hole position accuracy inspection on the size scale mark on the locating taper pin, and the production improvement scheme of the workpiece is optimized according to the deviation value. The utility model has simple structure, convenient operation, wide application range and can realize the rapid positioning and the precision inspection of the hole site of the workpiece.

Drawings

FIG. 1 is a schematic view of a combined drilling device according to the present utility model;

FIG. 2 is a schematic view of the structure of the locating taper pin according to the present utility model;

FIG. 3 is a schematic view of the assembled drilling device and workpiece according to the present utility model;

reference numerals illustrate: 1. positioning the taper pin; 11. a pin cap boss; 12. a thick cylindrical section; 13. a cone section; 14. a thin cylindrical section; 2. a drill plate; 21. a lightening hole; 3. a drill sleeve; 31. an avoidance unit; 4. a fixing screw; 5. a workpiece; 51. prefabricating holes.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the detailed description.

As shown in fig. 1, the combined drilling device of the present utility model comprises a drill plate 2, a drill bushing 3, a locating taper pin 1 and a set screw 4. The center of the drill plate 2 is provided with a lightening hole 21, so that the overall weight of the device can be lightened, and the device can be conveniently taken out; the drill plate 2 is also provided with a plurality of drilling hole sites (not shown), the drill sleeve 3 is matched with the drilling hole sites of the drill plate 2, the drill sleeve 3 is fixed on the drill plate 2 by the fixing screws 4 to prevent the drill sleeve 3 from rotating, and the locating taper pin 1 is arranged in the drill floor. Specifically, the drill bushing 3 comprises a drill bushing 3 head and a drill bushing 3 body integrally formed with the drill bushing 3 head, the outer diameter of the drill bushing 3 head is larger than that of the drill bushing 3 body, and a downward concave avoiding part 31 is arranged on the drill bushing 3 head and used for avoiding the fixing screw 4. The drill bushing 3 is detachably pressed in a drilling hole position of the drill plate 2 through a fixing screw 4, and the fixing screw 4 is abutted with an avoidance part 31 of the head of the drill bushing 3 and used for guiding a drill bit and installing and positioning the locating taper pin 1; the drill sleeve 3 is internally provided with a through pin hole, and the positioning taper pin 1 is detachably and concentrically arranged in the pin hole of the drill sleeve 3. According to the utility model, the rapid positioning of the installation hole site of the workpiece 5 is realized by utilizing the drill jig plate 2 and the positioning taper pin 1; for the workpiece 5 with the prefabricated hole 51 or the process hole, the locating taper pin 1 is used for adjusting the hole spacing between the drill plate 2 and the workpiece 5 prefabricated hole 51 or the process hole, so that the smooth assembly of the final hole position obtained after adjustment is ensured, the deviation value of the workpiece 5 prefabricated hole 51 or the process hole can be determined by carrying out hole position accuracy inspection through the size scale mark on the locating taper pin 1, and the production improvement scheme of the workpiece 5 is optimized according to the deviation value.

As shown in fig. 2, the locating taper pin 1 includes a pin cap boss 11 and a pin body integrally formed with the pin cap boss 11. Wherein, be provided with the annular knurl on the outer peripheral face of round pin cap boss 11, be convenient for install and take and fix. The pin body consists of a thick cylindrical section 12, a conical section 13 and a thin cylindrical section 14 which are connected in sequence. Specifically, the axial length C of the thick cylindrical section 12, the conical section 13 and the thin cylindrical section 14 is equal, and the axial length C is more than or equal to the accumulated value of the thickness of the drill plate 2 and the thickness of the workpiece 5. The diameter B of the thick cylindrical section 12 is equal to the inner diameter of the pin hole of the drill sleeve 3, the radial dimension of the conical section 13 is uniformly transited along the axial direction, and the diameter A of the thin cylindrical section 14 is half of the difference between the final hole diameter of the workpiece 5 and the diameter B. The thick cylindrical section 12 is provided with size scale marks, and under the condition of certain taper, the variation of the diameter difference value between the conical section 13 and the thick cylindrical section 12 is uniformly distributed along the axial direction of the pin body at certain intervals so as to reflect the radial size variation of the conical section 13 penetrating through the workpiece 5 in the use process. The length of the distribution of the size graduation marks on the thick cylindrical section 12 is equal to the axial length C of the conical section 13.

In the actual use process, the drill plate 2 and the mounting surface of the work piece 5 without holes are clamped and fixed by a clamp, and then the primary hole site is directly drilled according to the position of the drill sleeve 3. For the workpiece 5 with the prefabricated hole 51, the drill sleeve 3 which is in line with the aperture of the prefabricated hole 51 of the workpiece 5 is arranged on the drill jig plate 2, the locating taper pin 1 penetrates through the drill jig plate 2 and the workpiece 5, for example, the thick cylindrical section 12 of the locating taper pin 1 can completely penetrate through the drill jig plate 2 and the workpiece 5, so that no deviation exists in the hole position of the prefabricated hole 51 of the workpiece 5, and auxiliary hole making is not needed by using the drill jig plate 2. As shown in fig. 3, if the thick cylindrical section 12 of the locating taper pin 1 cannot completely pass through the drill sleeve 3 and the workpiece 5 in the drill plate 2, the locating clamp between the drill plate 2 and the workpiece 5 is loosened, the drill plate 2 and the workpiece 5 are repositioned by using the taper section 13 of the locating taper pin 1 and then clamped again, at this time, the pin hole of the drill sleeve 3 in the drill plate 2 is inconsistent with the hole site of the prefabricated hole 51 of the workpiece 5, and the prefabricated hole 51 of the workpiece 5 can be expanded to a final hole in a reaming mode according to the pin hole site of the drill sleeve 3 in the drill plate 2 so as to ensure that the final hole meets the installation requirement.

When the preformed hole 51 of the workpiece 5 is only accessible to the thin cylindrical section 14 of the locating cone pin 1, it is indicated that the hole position deviation has reached the maximum deviation value allowed by the expansion to the final hole. If the thin cylindrical section 14 of the hole location taper pin 1 cannot pass through smoothly, the relative position between the drill plate 2 and the workpiece 5 is adjusted through other hole locations located by the thick cylindrical section 12 or the conical section 13 of the location taper pin 1 until the location taper pin 1 can pass through all the hole locations of the workpiece 5 smoothly. After the adjustment is completed by the method, the radial deviation of each hole position of the workpiece 5 can be read out according to the size scale marks on the rough cylindrical section 12 of the locating taper pin 1.

In conclusion, the utility model has the advantages of simple structure, convenient operation, capability of realizing quick positioning and precision inspection of the hole site of the workpiece 5 and wide application range.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims

1. The utility model provides a controllable combination drilling equipment of position accuracy which characterized in that: the drilling jig comprises a drilling jig plate, a drilling sleeve, a positioning taper pin and a fixing screw; the drill bushing is detachably pressed in the drilling hole position of the drill plate through the fixing screw; the drill sleeve is internally provided with a through pin hole, and the positioning taper pin is detachably and concentrically arranged in the pin hole of the drill sleeve.

2. The combination drilling device with controllable positional accuracy according to claim 1, wherein: the locating taper pin comprises a pin cap boss and a pin body integrally formed with the pin cap boss, wherein the pin body consists of a thick cylindrical section, a taper section and a thin cylindrical section which are sequentially connected.

3. The combination drilling device with controllable position accuracy according to claim 2, wherein: the axial lengths C of the thick cylindrical section, the conical section and the thin cylindrical section are equal, and the axial length C is more than or equal to the accumulated value of the thickness of the drill plate and the thickness of the workpiece.

4. A combination drilling device with controllable positional accuracy according to claim 2 or 3, characterized in that: the diameter B of the thick cylindrical section is equal to the inner diameter of the pin hole of the drill sleeve, the radial dimension of the conical section is in uniform transition along the axis direction, and the diameter A of the thin cylindrical section is half of the difference value between the diameter of the final hole and the diameter B.

5. A combination drilling device with controllable positional accuracy according to claim 2 or 3, characterized in that: the thick cylindrical section is provided with a size scale mark, and the length of the size scale mark is equal to the axial length C.

6. A combination drilling device with controllable positional accuracy according to claim 2 or 3, characterized in that: the outer peripheral surface of the pin cap boss is provided with knurling.

7. The combination drilling device with controllable positional accuracy according to claim 1, wherein: and the drill jig plate is provided with a lightening hole.

8. The combination drilling device with controllable positional accuracy according to claim 1, wherein: the drill bushing is provided with an avoidance part.