阅读说明：本技术 用于定位销轴线与base面倾斜时部件的设计方法 (Design method for component when positioning pin axis and BASE surface incline ) 是由 蔡忠锋 谭秀阳 张峰 林华 朱成云 陈晶晶 石钢 于 2020-05-19 设计创作，主要内容包括：本发明属于汽车设计技术领域,具体涉及部件的设计方法。一种用于定位销轴线与BASE面倾斜时部件的设计方法,包括：将车身件定位孔的轴线投影到BASE板面上,形成投影直线；利用轴线和投影直线形成基准面；将定位销单元的定位销与轴线同心,将定位销单元的定位面与基准面平行；将部件的底面与BASE板面的顶面相合,将部件的侧面与定位销单元的定位面相合,实现对部件的定位。本发明的一种用于定位销轴线与BASE面倾斜时部件的设计方法,当车身件定位孔倾斜时,能够快速找到与BASE板面垂直且过定位销轴线的基准面,根据基准面最终确定部件位置,避免了部件设计出不规则的NC加工面,节约加工成本,设计简单,提高效率。(The invention belongs to the technical field of automobile design, and particularly relates to a design method of a component. A method of designing a component for use when a dowel axis is inclined from a BASE plane, comprising: projecting the axis of the positioning hole of the automobile body part onto the BASE plate surface to form a projection straight line; forming a reference plane by using the axis and the projection straight line; the positioning pin of the positioning pin unit is concentric with the axis, and the positioning surface of the positioning pin unit is parallel to the reference surface; the bottom surface of the component is matched with the top surface of the BASE board surface, and the side surface of the component is matched with the positioning surface of the positioning pin unit, so that the component is positioned. According to the design method for the part when the axis of the positioning pin is inclined with the BASE surface, when the positioning hole of the automobile body part is inclined, the reference surface which is perpendicular to the BASE surface and passes through the axis of the positioning pin can be quickly found, the position of the part is finally determined according to the reference surface, the part is prevented from being designed into an irregular NC machining surface, the machining cost is saved, the design is simple, and the efficiency is improved.)

1. A method for designing a component when an axis of a dowel pin is inclined to a BASE plane, comprising the steps of:

projecting the axis of the positioning hole of the automobile body part onto the BASE board surface to form a projection straight line;

forming a reference plane by using the axis and the projection straight line;

concentric with the axis, and parallel with the reference surface;

and matching the bottom surface of the component with the top surface of the BASE board surface, and matching the side surface of the component with the positioning surface of the positioning pin unit to realize the positioning of the component.

2. The method for designing the component with the inclined locating pin axis and the BASE surface as claimed in claim 1, wherein when the axis of the locating hole of the vehicle body component is projected on the BASE surface, the axis is projected on the BASE surface in an orthographic projection mode.

3. The method as claimed in claim 1, wherein the datum plane is visible and the axis and the projected line are both on the datum plane.

4. The design method for the component when the axis of the positioning pin is inclined to the BASE surface as claimed in claim 1, wherein the positioning pin unit comprises a fixing frame, the top of the fixing frame is provided with a positioning pin which is concentric with the axis, the positioning pin is vertically arranged, the side edge of the fixing frame is provided with the positioning surface, and the positioning surface is parallel to the central line of the positioning pin.

5. The method of claim 1, wherein the component is a column comprising a cross plate and a riser secured to one side of the cross plate, such that the column forms an L-shaped column.

Technical Field

The invention belongs to the technical field of automobile design, and particularly relates to a design method of a component.

Background

With the progress of the times, the automobile bodies can be continuously updated, and inclined positioning holes of the automobile bodies are more and more. At the moment, because the positioning hole is inclined to the BASE surface, difficulty is brought to the positioning of the parts on the BASE surface, particularly the upright column, once the parts are not accurately positioned, an irregular NC machining surface is designed, defective products are generated, and the machining cost and the machining efficiency are influenced.

Disclosure of Invention

The invention aims to solve the technical problems that when an inclined positioning hole exists in a car body, the positioning of a part is inaccurate, the working efficiency is influenced, and high risk exists, and aims to provide a design method for the part when the axis of a positioning pin and a BASE surface incline.

A method for designing a component when an axis of a dowel pin is inclined to a BASE plane, comprising the steps of:

projecting the axis of the positioning hole of the automobile body part onto the BASE board surface to form a projection straight line;

forming a reference plane by using the axis and the projection straight line;

concentric with the axis, and parallel with the reference surface;

and matching the bottom surface of the component with the top surface of the BASE board surface, and matching the side surface of the component with the positioning surface of the positioning pin unit to realize the positioning of the component.

When projecting the axis of the positioning hole of the automobile body part onto the BASE plate surface, projecting the axis onto the BASE plate surface in an orthographic projection mode.

The reference surface can be displayed by adopting visible light, and the axis and the projection straight line are both positioned on the reference surface.

The locating pin unit comprises a fixing frame, a locating pin used for being concentric with the axis is arranged at the top of the fixing frame, the locating pin is vertically arranged, the locating face is arranged on the side edge of the fixing frame, and the locating face is parallel to the central line of the locating pin.

The part adopts the stand, the stand include the diaphragm, with the riser of one side fixed of diaphragm, cause the stand forms the stand of L style of calligraphy.

The positive progress effects of the invention are as follows: according to the design method for the part when the axis of the positioning pin is inclined with the BASE surface, when the positioning hole of the automobile body part is inclined, the reference surface which is perpendicular to the BASE surface and passes through the axis of the positioning pin can be quickly found, the position of the part is finally determined according to the reference surface, the part is prevented from being designed into an irregular NC machining surface, the machining cost is saved, the design is simple, and the efficiency is improved.

Drawings

FIG. 1 is an axial view of a locating hole for a body part according to the present invention;

FIG. 2 is a schematic view of a projection line and a reference plane according to the present invention;

FIG. 3 is a schematic view of a construction of a locating pin unit of the present invention;

FIG. 4 is a schematic view of a component of the present invention;

FIG. 5 is a schematic illustration of a component of the present invention after design;

fig. 6 is a partially enlarged schematic view of fig. 5.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific drawings.

Referring to fig. 1 to 6, a method for designing a component when an axis of a dowel pin is inclined to a BASE plane, comprising the steps of:

and S1, projecting the axis of the positioning hole of the automobile body part onto the BASE plate surface to form a projection straight line.

Referring to fig. 1 and 2, the vehicle body part positioning hole 1 is located above the BASE plate surface 2, and the axis 11 may be projected onto the BASE plate surface 2 in an orthographic projection manner to form a projection straight line 12.

And S2, forming a reference plane by using the axis and the projection straight line.

Referring to fig. 2, the reference plane 3 may be displayed in visible light, and the axis 11 and the projected straight line 12 are located on the reference plane.

And S3, aligning the positioning pin of the positioning pin unit with the axis, and making the positioning surface of the positioning pin unit parallel to the reference surface.

Referring to fig. 3, the positioning pin unit 4 includes a fixing frame 41, a positioning pin 42 concentric with the axis 11 is disposed at the top of the fixing frame 41, the positioning pin 42 is disposed vertically, a positioning surface 43 is disposed at a side of the fixing frame 41, and the positioning surface 43 is parallel to a center line of the positioning pin 42. That is, when the center line of the positioning pin 42 is vertical, the positioning surface 43 is a vertical surface perpendicular to the horizontal surface. The positioning surface 43 may be a side surface of the fixing frame 41 itself, or a positioning block may be additionally disposed on the fixing frame 41, and the side surface of the positioning block is defined as the positioning surface 43.

And S4, matching the bottom surface of the component with the top surface of the BASE plate surface, and matching the side surface of the component with the positioning surface of the positioning pin unit to realize the positioning of the component.

Referring to fig. 4, the component is a vertical column 5, and the vertical column 5 comprises a transverse plate and a vertical plate fixed to one side of the transverse plate, so that the vertical column forms an L-shaped vertical column. In this case, the bottom surface of the pillar is the bottom surface 51 of the horizontal plate, and the side surface of the pillar is the outer side surface 52 of the vertical plate.

Referring to fig. 5 and 6, after the steps S1 to S4 of the present invention are adopted, the positioning design of the upright post 5 is obtained, which avoids the upright post from designing an irregular NC processing surface, saves the processing cost, has simple design and improves the efficiency.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.