CN211840277U

CN211840277U - Large-scale thin wall toper barrel main aspects location pinhole jig device

Info

Publication number: CN211840277U
Application number: CN201922430827.7U
Authority: CN
Inventors: 程莲香; 耿莹晶; 郝华华; 刘德靓; 李萌
Original assignee: Shanxi Jianghuai Heavy Industry Co Ltd
Current assignee: Shanxi Jianghuai Heavy Industry Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-11-03
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a large-scale thin wall toper barrel main aspects location pinhole jig device, including boring die body, fixed bush, quick change bush, wherein, the boring die body is a step discoid, the boring die body has a ending portion and one and supports the portion of leaning on, the process location hole and the locating pin hole department that the periphery of boring die body corresponds thin wall toper barrel main aspects set up respectively fixed bush, the quick change bush set up in the fixed bush, fixed bush with boring die body interference fit, the quick change bush with fixed bush be the carrier with boring die body coupling. The utility model discloses a positioning pin hole jig device work piece positioning pin hole uniformity is good when carrying out large-scale thin wall taper cylinder volume production, and the precision stability is high, plays location convenience, accurate when each section butt joint becomes a whole, and the positioning pin hole center torsion error value at product both ends is little, and positioning accuracy is high.

Description

Large-scale thin wall toper barrel main aspects location pinhole jig device

Technical Field

The utility model relates to a location pinhole processingequipment, especially a processing jig device of terminal surface location pinhole when large-scale thin wall toper barrel is batched.

Background

In national defense equipment, usually, structural members of product sections are large thin-wall conical cylinders, positioning pin holes are designed on two end faces of each section in butt joint connection, the positioning pin holes play a role in positioning when the sections are connected into a whole so as to prevent the reference center of the product from being greatly twisted and influence the mass center and the precision of the product, so that the central twisting error value of the positioning pin holes at the two ends has great influence on the whole precision of the product, the original processing method of the positioning pin holes at the two ends of the large thin-wall cylinder is that after an airborne power head is used for center drilling on a CK61125 numerical control lathe, a drill bit or a milling cutter is used for processing, the processing method shortens the development period and has lower cost when in development, and provides convenience for a research and development company to rapidly match with a development task completed by a research and research institution, but has obvious defects when in batch production, firstly, the processing of the positioning pin holes at the two end faces on the CKQ61125 numerical control lathe takes longer time, the method has the problems of long time consumption and low economic benefit, meanwhile, due to the unstable precision of the machine tool, the processing consistency and the poor maintenance of the positioning pin holes are poor, and the reference centers at the two ends are transferred by the drawing line of a bench worker, so that the centers at the two ends are easy to twist and deviate, the positioning pin holes at the two ends of the workpiece are likely to be not assembled in an opposite mode after being processed, or the reference centers twist and deviate, the workpiece is likely to be scrapped, and the processing cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a large-scale thin wall taper barrel body main aspects location pinhole jig device is provided.

In order to achieve the above object, the utility model provides a large-scale thin wall taper barrel main aspects location pinhole jig device, including boring die body, fixed bush, quick change drill bushing, wherein, the boring die body is a step discoid, the boring die body has a ending portion and one and supports the portion of leaning on, the process location hole and the locating pin hole department that the periphery of boring die body corresponds thin wall taper barrel main aspects set up respectively fixed bush, the quick change drill bushing set up in the fixed bush, fixed bush with boring die body interference fit, the quick change drill bushing with fixed bush be the carrier with boring die body coupling.

According to the large-scale thin-wall conical barrel body large-end positioning pin hole drilling jig device, the drilling jig body is evenly provided with the two U-shaped pressing plates, the upper plate body of each U-shaped pressing plate is provided with the fastening screw, and the fastening screw is provided with the fastening handle.

According to the large-end positioning pin hole drilling jig device for the large thin-wall conical cylinder, the brass plate is embedded on the inner side of the lower plate of the U-shaped pressing plate.

According to the large-sized thin-wall conical barrel body large-end positioning pin hole drilling jig device, the quick-change drill bush is fixedly mounted on the drilling jig body through the rotating sleeve screw.

According to the large-sized thin-wall conical cylinder body large-end positioning pin hole drilling jig device, two lifting ring screws which are symmetrical in position are arranged on the drilling jig body.

According to the large-sized thin-wall taper cylinder body large-end positioning pin hole drilling jig device, the positioning bolt is arranged in the quick-change drill bushing, and the positioning bolt is in clearance fit with a workpiece and the drill bushing through H7/H6.

According to the large-end positioning pin hole drilling jig device for the large thin-wall conical cylinder, H7/n6 interference fit is selected between the fixing bushing and the drilling jig body.

According to the large-sized thin-wall conical cylinder body large-end positioning pin hole drilling jig device, F7/m6 clearance fit is formed between the quick-change drill bushing and the drill jig body.

Compared with the prior art, the utility model, its beneficial effect lies in: when the large thin-wall conical cylinder is produced in batch, the consistency of the positioning pin holes of the workpiece is good, the precision stability is high, the positioning is convenient and accurate when all the sections are connected into a whole in a butt joint mode, the central torsion error value of the positioning pin holes at two ends of the product is small, and the positioning precision is high.

The drilling machine is used for replacing a numerical control lathe to process the positioning pin hole, so that the clamping and positioning are convenient, quick and accurate; the production period is short, and the production efficiency is obviously improved. And the structure is simple, the universality is good, and the production cost can be effectively reduced.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.

Drawings

FIG. 1 is a schematic diagram of the positions of a positioning pin hole and a process positioning hole on the end face of a large thin-wall conical cylinder.

Fig. 2 is a sectional view taken along line C-C in fig. 1.

Fig. 3 is the structure diagram of the positioning pin hole drilling jig device of the present invention.

Fig. 4 is a sectional view taken along line C-C of fig. 3.

Detailed Description

The following detailed description of the embodiments of the present invention will be provided in conjunction with the accompanying drawings and specific embodiments for further understanding the objects, aspects and functions of the present invention, but not for limiting the scope of the appended claims.

As shown in fig. 1 and 2, 2 process positioning holes 15 that need to be pre-processed on the thin-wall conical cylinder 14 are symmetrically distributed on the center line of the end surface of the cylinder, and the other two positioning pin holes 16 are symmetrically distributed on the end surface of the thin-wall conical cylinder 14 that deviates from the center by a certain angle.

As shown in fig. 3 and 4, a large-scale thin-wall taper cylinder positioning pin hole drilling jig device comprises a drilling jig body 1, wherein the drilling jig body 1 is in a step disc shape with a certain thickness on the whole, the center of the drilling jig body can be set to be in a through hole shape as required, the longitudinal section of the drilling jig body is in a T-shaped step shape on the whole, the drilling jig body 1 is provided with a spigot part 110 and a end face abutting part 111, referring to fig. 4, when the drilling jig body is used, the excircle of the spigot part 110 of the drilling jig body 1 is in clearance fit with the inner hole of the end frame of the taper cylinder 14, and the large end face of the taper cylinder 14 abuts.

The periphery of the drill die body 1 is provided with two fixing bushings 2 in the vertical direction of the centers of a process positioning hole and a positioning pin hole corresponding to the large end of the thin-wall conical cylinder 14 and used for machining two process holes in the end face of a workpiece, the fixing bushings 2 are in interference fit with the drill die body 1 through H7/n6, the quick-change drill bush 3 is connected with the drill die body 1 through the fixing bushings 2 serving as carriers in a F7/m6 clearance fit mode, the quick-change drill bush 3 is installed on the drill die body 1 through drill bush screws 7, and a process positioning bolt 6 is arranged on the quick-change drill bush 3 and used for positioning the drill die body with the large-sized thin-wall conical cylinder 14 when drilling a positioning pin hole so as to prevent the positioning pin hole. The drill jig body 1 is provided with a fixing bush 5 for processing 2 positioning pin holes in the end face of the barrel body, the fixing bush 5 is in transition fit with the drill jig body 1 through H7/n6, the quick-change drill bush 4 is connected with the drill jig body 1 through the fixing bush 5 as a carrier, the connection mode is F7/m6 clearance fit, and the quick-change drill bush 4 is installed on the drill jig body 1 through drill bush screws 10. The drill die body 1 is uniformly provided with 2U-shaped pressing plates 12, brass plates 13 are inlaid on the inner sides of lower plates of the U-shaped pressing plates 12 to prevent the surface of the large thin-wall conical barrel from being damaged in the pressing process, fastening screws 9 are arranged on an upper plate of the U-shaped pressing plates 7 and used for pressing the drill die body 1 and the large thin-wall conical barrel 14, and fastening handles 8 are arranged on the fastening screws 9 and used for wrenches for fastening the screws. Two lifting ring screws 11 with symmetrical positions are arranged on the drill die body 1, and the lifting ring screws 11 are used for suspension displacement of a workpiece.

The use of the device will now be described by way of example with a large thin-walled conical cylinder. After finishing the finish machining process of the inner circle, the outer circle and the end face of the large thin-wall conical shell, transferring a workpiece to a radial drilling machine, placing the workpiece on a workbench, hoisting the device by using a crown block, performing clearance fit between the outer circle of a spigot part 110 of a drill die body 1 and an inner hole of a barrel end frame, enabling the large end face of a conical barrel 14 to abut against an abutting part 111 of the drill die body 1 to adjust a drill die, aligning a cross center line, fastening the workpiece and the drill die body by using a U-shaped pressing plate, then machining a 2-phi 10+ 0.10 process positioning hole 15 by using a quick-change drill bushing, firstly drilling to phi 6, replacing the quick-change drill bushing to phi 9.8, reaming the drill bushing again, reaming the drill bushing to phi 10H7, using the drill machine positioning hole as a drilling machine, inserting two positioning pins, centering, machining a 2-phi 10.5+ 0.10 positioning pin hole 16 by using the quick-change drill bushing again, firstly drilling to phi 6, replacing the quick-, reaming to a diameter of 10.5 to a specified size, checking the processing quality of each hole, loosening the compression screw, taking out the U-shaped pressing plate, lifting the device away from the surface of the cylinder, chamfering the hole opening, cleaning and wiping the surface of a workpiece, and placing the workpiece at a specified position.

Naturally, the present invention can be implemented in other various embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims

1. The utility model provides a large-scale thin wall toper barrel main aspects locating pin hole jig device, includes drill jig body, fixed bush, quick change drill bushing, its characterized in that, the drill jig body is a step discoid, the drill jig body has a tang portion and a portion of supporting, and the process locating hole and the locating pin hole department that the periphery of drill jig body corresponds thin wall toper barrel main aspects set up respectively fixed bush, the quick change drill bushing set up in the fixed bush, fixed bush with drill jig body interference fit, the quick change drill bushing use fixed bush as the carrier with drill jig body coupling.

2. The large-scale thin-wall conical cylinder body large-end positioning pin hole drilling jig device according to claim 1, wherein two U-shaped pressing plates are uniformly arranged on the drilling jig body, a fastening screw is arranged on an upper plate body of each U-shaped pressing plate, and a fastening handle is arranged on each fastening screw.

3. The large-scale thin-wall conical cylinder large-end positioning pin hole drilling jig device as claimed in claim 2, wherein a brass plate is embedded on the inner side of the lower plate of the U-shaped pressing plate.

4. The large-scale thin-wall conical cylinder large-end positioning pin hole drilling jig device as claimed in claim 1, 2 or 3, wherein the quick-change drill bushing is fixedly mounted on the drill jig body through a rotating sleeve screw.

5. The large-scale thin-wall conical cylinder large-end positioning pin hole drilling jig device as claimed in claim 1, 2 or 3, wherein two suspension ring screws with symmetrical positions are arranged on the drilling jig body.

6. The large-scale thin-wall conical cylinder large-end positioning pin hole drilling jig device as claimed in claim 1, wherein a positioning bolt is arranged in the quick-change drill bushing, and the positioning bolt is in clearance fit with a workpiece and the drill bushing in a manner of H7/H6.

7. The large-scale thin-walled conical cylinder body large-end positioning pin hole drilling jig device as claimed in claim 6, wherein an H7/n6 interference fit is selected between the fixing bushing and the drilling jig body.

8. The large-scale thin-wall conical cylinder large-end positioning pin hole drilling jig device as claimed in claim 7, wherein a F7/m6 clearance fit is formed between the quick-change drill bushing and the drill jig body.