CN212918458U

CN212918458U - Drilling jig suitable for thrust chamber circular pipe section

Info

Publication number: CN212918458U
Application number: CN202020987367.8U
Authority: CN
Inventors: 何烈; 唐飞; 唐小毛; 曾泽科; 曹鹏飞; 王武斌; 龙群仙; 王明俊; 唐续军
Original assignee: Guangdong Gaowo Technology Co ltd
Current assignee: Guangdong Gaowo Technology Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-04-09
Anticipated expiration: 2030-06-03

Abstract

The utility model discloses a drilling jig suitable for a thrust chamber circular pipe section, which comprises a pipe body and a base which are connected up and down, wherein a plurality of vortex holes are uniformly distributed on the pipe body; the drilling jig comprises a sleeve and a step flange which are connected up and down; the sleeve outer wall upper end be provided with a plurality of with the boss that the vortex hole quantity corresponds, the boss all is provided with and runs through telescopic guiding hole, the central axis of guiding hole and the coincidence of the central axis in the vortex hole that corresponds. The drilling jig is used for direct drilling and machining, plays a role in guiding and protecting a drill bit, prevents deviation of hole site drilling, and prevents the drill bit from being broken.

Description

Drilling jig suitable for thrust chamber circular pipe section

Technical Field

The utility model relates to a tool technical field especially indicates a drilling jig suitable for thrust chamber circle pipeline section.

Background

Fig. 1 is a perspective view of a thrust chamber circular tube section of a gaseous hydrogen-oxygen vortex cooling thruster. As shown in figure 1, the thrust chamber circular tube section comprises a tube body A and a base B which are connected up and down, a plurality of vortex holes C are evenly distributed on the tube body, and as shown in figure 2, the central axis of each vortex hole C is not in a vertical relation with the tangent line of the outer surface of the tube body A.

There are three processes for conventional processing. The process 1 comprises the following steps: and directly drilling and processing after clamping the dividing plate. And (2) a process: after clamping the dividing disc, firstly, milling guide points and then drilling. And (3) a process: and (3) machining and punching by adopting a process of mainly milling and secondarily drilling after clamping by using an index plate.

The prior art has the defects and shortcomings that:

(1) in the process 1, because the central axis of the vortex hole C is not perpendicular to the tangent line of the outer surface of the pipe body A, the head of the drill bit is only partially stressed when the lower cutter is drilled, lateral pressure perpendicular to the direction of the lower cutter can be generated between a workpiece and the drill bit, the hole is easy to be deviated in drilling, and the drill bit is very easy to break.

(2) In the process 2 or the process 3, the problem that the cutter is easy to break exists in the process of punching, and in addition, the working hours are long and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is according to the not enough of above-mentioned prior art, provide a drilling jig suitable for thrust chamber circle pipeline section, solved current drilling processing mesopore and bored the problem partially easily, the drill bit breaks easily.

The technical scheme of the utility model is realized like this:

a drilling jig suitable for a thrust chamber circular pipe section comprises a pipe body and a base which are connected up and down, wherein a plurality of vortex holes are uniformly distributed in the pipe body; the drilling jig comprises a sleeve and a step flange which are connected up and down; the sleeve outer wall upper end be provided with a plurality of with the boss that the vortex hole quantity corresponds, the boss all is provided with and runs through telescopic guiding hole, the central axis of guiding hole and the coincidence of the central axis in the vortex hole that corresponds.

Further, the sleeve inner diameter is larger than the pipe body outer diameter.

Further, the base is provided with a plurality of connecting holes, the step flange is provided with a plurality of via holes, and the positions of the connecting holes and the via holes correspond to each other one to one.

Adopt above-mentioned technical scheme, the beneficial effects of the utility model reside in that: the drilling jig is used for direct drilling processing to play direction and guard action to the drill bit, prevents that the hole site from boring partially, prevents the drill bit rupture. A drilling jig is not used, a drill is used for direct drilling, and 2 drills are consumed for each part on average. Drilling is carried out after milling guide points or the process of mainly milling and secondarily drilling is adopted for drilling, on average, only 10 parts can be machined by each group of cutters, and the machining of 12 vortex holes of one part takes more than 20 minutes. By adopting the drilling jig, the processing life of the drill bit is obviously prolonged, 30 parts can be processed by each drill bit on average, the processing efficiency is also obviously improved, the drilling processing time of each part is only 8 minutes on average, and the processing quality and the processing efficiency are obviously improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a perspective view of a thrust chamber circular tube section of a gaseous hydrogen-oxygen vortex cooling thruster.

Fig. 2 is a horizontal partial sectional view of the pipe body.

Fig. 3 is a perspective view of the embodiment.

FIG. 4 is a horizontal cross-sectional view of the sleeve of the embodiment.

FIG. 5 is a schematic view of the assembly of the embodiment with an undrilled thrust chamber spool section.

In the figure, the pipe body is A, the base is B, the vortex hole is C, the connecting hole is D, the sleeve is 1, the flange is 2, the boss is 3, the guide hole is 4, and the hole is 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 3, in an embodiment of the present invention, a drilling jig suitable for a thrust chamber circular pipe section is provided. As shown in fig. 1 and 2, the circular tube segment of the thrust chamber comprises a tube body a and a base B which are connected up and down, wherein a plurality of vortex holes C are uniformly distributed on the tube body a and are obtained by using the processing of the embodiment.

As shown in fig. 4, the drilling jig comprises a sleeve 1 and a step flange 2 which are connected up and down; the upper end of the outer wall of the sleeve 1 is provided with a plurality of bosses 3 corresponding to the number of the vortex holes C, the bosses 3 are provided with guide holes 4 penetrating through the sleeve 1, and the central axis of each guide hole 4 coincides with the central axis of the corresponding vortex hole C. In this embodiment, the number of the bosses 3 and the number of the guide holes 4 are twelve.

The inner diameter of the sleeve 1 is larger than the outer diameter of the pipe body A, so that the sleeve 1 can be sleeved outside the pipe body A.

The base B is provided with a plurality of connecting holes D, the step flange 2 is provided with a plurality of through holes 5, and the positions of the connecting holes D and the through holes 5 correspond to each other one by one. In this embodiment, the number of the connection holes D and the via holes 5 is six.

As shown in fig. 5, in use of the present embodiment: (1) placing a base B of the thrust chamber circular pipe section on an index plate (shown in the figure), sleeving a sleeve 1 outside a pipe body A, placing a step flange 2 on the surface of the base B, and enabling bolts to sequentially penetrate through holes 5 and connecting holes D and to be in locking connection with threaded holes in the index plate, so that the thrust chamber circular pipe section and a drilling jig are fixed on the index plate; (2) the drill bit is adopted to directly drill the part along the guide hole 4, so that a vortex hole C is obtained on the pipe body A, and the central axis of the vortex hole C coincides with the central axis of the corresponding guide hole 4.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drilling jig suitable for a thrust chamber circular pipe section comprises a pipe body and a base which are connected up and down, wherein a plurality of vortex holes are uniformly distributed in the pipe body; drilling tool, its characterized in that: comprises a sleeve and a step flange which are connected up and down; the sleeve outer wall upper end be provided with a plurality of with the boss that the vortex hole quantity corresponds, the boss all is provided with and runs through telescopic guiding hole, the central axis of guiding hole and the coincidence of the central axis in the vortex hole that corresponds.

2. The drilling jig suitable for the thrust chamber pipe section of claim 1, characterized in that: the sleeve inner diameter is greater than the body outer diameter.

3. The drilling jig suitable for the thrust chamber pipe section of claim 1, characterized in that: the base is provided with a plurality of connecting holes, the step flange is provided with a plurality of via holes, the position one-to-one of connecting hole and via hole.