Cambered surface drilling auxiliary tool

Abstract

The utility model relates to the field of drilling tools, in particular to a cambered surface drilling auxiliary tool. The tool comprises a tool base body and a positioning pin assembly. The tool base body is provided with two positioning holes which are vertically distributed and symmetrically formed in the transverse direction, a positioning blind hole b vertically formed in the middle and positioning blind holes a vertically formed between the positioning blind hole b and the two positioning holes respectively. The positioning pin assembly comprises a base body positioning pin inserted into the positioning hole, a workpiece positioning pin a inserted into the positioning blind hole a and a workpiece positioning pin b inserted into the positioning blind hole b. According to the utility model, the workpiece can be quickly positioned and clamped, the cambered surface hole machining efficiency and quality are improved, and the batch production waste and defective rate are reduced.

Description

Technical Field

[0001] The utility model relates to the field of drilling tools, in particular to an auxiliary tool for drilling on an arc surface. Background Art

[0002] In the production and processing of aviation mechanical parts, the processing requirement of drilling on the part surface is often encountered. The common drilling is roughly divided into two categories. One is plane drilling, and the other is arc surface drilling. For plane drilling, the conventional "marking + drilling" method can be used to achieve it, and generally no auxiliary tool is required. In contrast, arc surface drilling is more difficult. The main reason is that the arc surface hole position is not accurately positioned and it is not easy to clamp. Also, due to the low machining accuracy of the conventional drilling machine, the arc surface holes processed are elliptical, and there are deviations in the hole axis, which affects the assembly, causes the parts to be scrapped, and delays the production and delivery. Content of the Utility Model

[0003] The purpose of the utility model is to solve the problems existing in the background art and propose an auxiliary tool for arc surface drilling, which can realize the rapid positioning and clamping of workpieces, improve the processing efficiency and quality of arc surface holes, and reduce the waste and defective product rates in batch production.

[0004] The technical solution of the utility model: an auxiliary tool for arc surface drilling includes a tooling base body and a positioning pin assembly; the tooling base body has two positioning holes vertically distributed and symmetrically arranged along the transverse direction, a positioning blind hole b vertically arranged in the middle, and a positioning blind hole a vertically arranged between the positioning blind hole b and the two positioning holes respectively; the positioning pin assembly includes a base body positioning pin inserted at the positioning hole, a workpiece positioning pin a inserted at the positioning blind hole a, and a workpiece positioning pin b inserted at the positioning blind hole b.

[0005] Preferably, pressing plate grooves are arranged at both transverse ends of the tooling base body.

[0006] Preferably, it further includes a plurality of pressing plates for fixing the tooling base body and the workpiece.

[0007] Preferably, the diameters of the positioning blind hole a, the positioning hole, and the positioning blind hole b increase in sequence.

[0008] Compared with the prior art, the utility model has the following beneficial technical effects:

[0009] The utility model can realize the rapid positioning and clamping of workpieces, saving time and effort, and greatly improving the clamping efficiency of workpieces. The use of the auxiliary tool can ensure that the drilling on the machine tool is formed in one processing, solve the problems of drilling elliptically and drilling off, improve the processing quality and process maturity of the holes, and effectively reduce the waste and defective product rates in batch production. In addition, the tooling has a simple structure, the application principle is easy to understand, starting from the actual situation, fully considering the problems such as difficult clamping and positioning of arc surface holes, the operation and maintenance of workers are convenient and fast, the production effect is obvious, and the batch production processing benefit is good. Description of the Drawings

[0010] Figure 1 It is a front view structural sectional view of an embodiment of the present utility model;

[0011] Figure 2 It is a schematic structural view of the present utility model in the state of clamping a workpiece.

[0012] Reference numerals: 1, tooling base; 101, positioning hole; 102, positioning blind hole a; 103, positioning blind hole b; 104, pressing plate groove; 2, base positioning pin; 3, workpiece positioning pin a; 4, workpiece positioning pin b; 5, clamping plate; 6, workpiece. Detailed Embodiments

[0013] Embodiment 1

[0014] As Figure 1 and Figure 2 shown, an arc surface drilling auxiliary tooling proposed in this embodiment includes a tooling base 1 and a positioning pin assembly.

[0015] The tooling base 1 has two positioning holes 101 that are vertically distributed and symmetrically arranged along the horizontal direction, a positioning blind hole b 103 that is vertically arranged in the middle, and a positioning blind hole a 102 that is vertically arranged between the positioning blind hole b 103 and the two positioning holes 101 respectively. That is, there are a total of five holes. The outermost ones are the two positioning holes 101, the middle one is the positioning blind hole b 103, and the positioning blind hole a 102 is between the positioning hole 101 and the positioning blind hole b 103. Among them, the diameters of the positioning blind hole a 102, the positioning hole 101, and the positioning blind hole b 103 increase in sequence.

[0016] The positioning pin assembly includes a base positioning pin 2 inserted at the positioning hole 101, a workpiece positioning pin a 3 inserted at the positioning blind hole a 102, and a workpiece positioning pin b 4 inserted at the positioning blind hole b 103. By inserting the base positioning pin 2 into the positioning hole 101, the application position of the tooling base 1 can be positioned. By passing the workpiece positioning pin a 3 through the through hole on the workpiece 6 and inserting it into the positioning blind hole a 102, and passing the workpiece positioning pin b 4 through the workpiece 6 and inserting it into the positioning blind hole b 103, the workpiece 6 can be positioned.

[0017] This embodiment can achieve the rapid positioning and clamping of the workpiece 6, saving time and effort, and greatly improving the clamping efficiency of the workpiece 6. The use of the auxiliary tooling can ensure that the drilling of the machine tool is formed in one processing, solve the problems of elliptical drilling and deviation drilling, improve the processing quality of the hole and the process maturity, and effectively reduce the waste and defective product rates in batch production. In addition, the structure of this tooling is simple, the application principle is easy to understand, starting from the actual situation, fully considering the problems of difficult clamping and positioning of arc-shaped holes, etc., the operation and maintenance of workers are convenient and fast, the production effect is obvious, and the batch production processing benefit is good.

[0018] Embodiment 2

[0019] As Figure 1 and Figure 2 shown, an auxiliary tooling for arc surface drilling proposed in this embodiment. Compared with Embodiment 1, in this embodiment, pressing plate grooves 104 are provided at both lateral ends of the tooling base body 1. The auxiliary tooling further includes a plurality of clamping pressing plates 5 for clamping the tooling base body 1 and the workpiece. Specifically, there are three clamping pressing plates 5 in total. Two of the clamping pressing plates 5 clamp the tooling base body 1 at the two pressing plate grooves 104 respectively, and the other clamping pressing plate 5 clamps the workpiece at the top of the workpiece 6.

[0020] The usage steps of this auxiliary tooling for arc surface drilling are as follows:

[0021] The first step: Position and clamp the tooling. Position the tooling through the positioning holes 101 on the tooling base body 1. After positioning, clamp the tooling on the workbench surface through the clamping pressing plates 5 inside the pressing plate grooves 104 at both ends;

[0022] The second step: Position and clamp the part. Position the workpiece 6 by inserting a mating positioning pin into the positioning blind hole. After positioning, the workpiece surface is clamped through the clamping pressing plate 5 to achieve the final clamping of the workpiece.

[0023] The third step: Machine the arc-shaped hole. When drilling the arc-shaped hole, the coordinate of the hole center position is fixed and guaranteed by the machine tool setting, and the depth of the machined hole is guaranteed by the Z value of the machine tool, which can ensure that the lug hole is machined in one time and reduce the interference of human factors. When the arc-shaped hole on one side is machined, turn the part 180° to machine the arc-shaped hole on the other side.

[0024] The fourth step: Remove the workpiece 6 and inspect for delivery.

[0025] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited thereto. Various changes can be made without departing from the spirit of the present utility model within the scope of knowledge possessed by those skilled in the art to which it pertains.

Claims

1. An auxiliary tooling for drilling on an arc surface, characterized in that Comprising: A tooling base body (1) having two positioning holes (101) vertically distributed and symmetrically arranged in the transverse direction, a positioning blind hole b (103) vertically arranged in the middle, and a positioning blind hole a (102) vertically arranged between the positioning blind hole b (103) and the two positioning holes (101) respectively; A positioning pin assembly including a base body positioning pin (2) inserted at the positioning hole (101), a workpiece positioning pin a (3) inserted at the positioning blind hole a (102), and a workpiece positioning pin b (4) inserted at the positioning blind hole b (103).

2. The arc surface drilling auxiliary tooling according to claim 1, wherein Pressing plate grooves (104) are provided at both transverse ends of the tooling base body (1).

3. The arc surface drilling auxiliary tooling according to claim 2, characterized in that, It further includes a plurality of pressing plates (5) for fastening the tooling base body (1) and the workpiece.

4. The arc surface drilling auxiliary tooling according to claim 1, characterized in that, The diameters of the positioning blind hole a (102), the positioning hole (101), and the positioning blind hole b (103) increase in sequence.

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