A positioning device for machining a fairing part

Abstract

The utility model belongs to the technical field of machining, concretely relates to a positioning device of fairing class part turning, including chassis, cone, mandrel, compression ring, pressure cap and bolt with hole, wherein, the chassis is fixed on lathe mesa, the centre of this chassis is installed with mandrel, the end face of mandrel is provided with the installation part, and the mandrel is matched with the small end inner diameter of part, guarantees the concentricity of part after installation with tooling, then installs compression ring, pressure cap in proper order, makes part fixed on mandrel, still fixed with the cone on the chassis, and the whole is located at the outer periphery of part, and one end face is fixed with the chassis through a plurality of bolts, still be equipped with a plurality of bolt with hole along the circumferential distribution on the cone, and the end of bolt with hole is provided with the pressing block, and the part of inside is fixed by adjusting bolt with hole and pressing. The processing positioning device provided by the utility model can install and position fairing class part quickly, and can guarantee the machining accuracy of part.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, specifically relating to a positioning device for machining fairing-type parts, which solves the problem of difficult positioning and clamping of fairing-type parts when machining on a horizontal lathe. Background Technology

[0002] Fairing-type parts require high dimensional accuracy. When machining their large end, the thin-walled, open structure makes clamping on the machine tool difficult, and the thin-walled structure is prone to vibration due to machining cutting forces, making direct clamping impossible and affecting machining quality.

[0003] Therefore, it is necessary to develop a device that can quickly position and install fairing-type parts and prevent machining vibrations to solve the above problems. Utility Model Content

[0004] In view of this, the present invention provides a positioning device for machining fairing-type parts, including a chassis, a cone, a mandrel, a pressure ring, a pressure cap, and a bolt with holes, wherein... The chassis is fixed to the machine tool table. A mandrel is installed at the center of the chassis. The mandrel has an end face for mounting parts. The mandrel matches the inner diameter of the small end of the parts to ensure that the parts are concentric with the tooling after installation. Then, a pressure ring and a pressure cap are installed in sequence to fix the parts on the mandrel. A cone is also fixed on the chassis, located on the outer periphery of the part, with one end face fixed to the chassis by multiple bolts; multiple perforated bolts are also provided on the cone, with pressure blocks at the ends of the perforated bolts, and the inner part is pressed and fixed by adjusting the perforated bolts.

[0005] Furthermore, a pin is provided between the end face of the cone and the base, and the pin is interference-fitted.

[0006] Furthermore, the pressure block is made of nylon, and its outer surface is designed as a conical surface that mates with the part.

[0007] The processing and positioning device provided by this utility model can quickly install and position fairing-type parts while ensuring the processing accuracy of the parts. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model; Detailed Implementation

[0009] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of systems consistent with some aspects of this invention as detailed in the appended claims.

[0010] This utility model provides a positioning device for machining fairing-type parts, including a chassis 1, a cone 2, a mandrel 3, a pressure ring 4, a pressure cap 5, and a bolt with holes 6. The specific structure is as follows: Figure 1 Place the base plate 1 on the machine tool table, and place the part on the end face of the mandrel 3. The mandrel 3 mates with the inner diameter of the small end of the part, positioning and centering the end face of the part. Then, install and tighten the pressure ring 4 and pressure cap 5 in sequence to press the small end of the part. By tightening the bolts 6 and fastening pins 7 evenly distributed 8 times around the circumference, the pressure block 8 is adjusted to contact and clamp the part, providing circumferential support and making the part clamping more stable, avoiding machining vibration. The pressure block can be made of nylon, with the outer surface set as a conical surface to mate with the part.

[0011] In this solution, the alignment belt on the outer diameter side of the chassis is used to align the positioning device on the machine tool, ensuring that the parts, positioning device, and machine tool rotation center are in the same center.

[0012] As an improvement to the design, a cone 2 is also fixed to the chassis, located on the outer periphery of part 11. One end face is fixed to the chassis by multiple bolts 9. A pin 10 is provided between the end face of the cone and the base, and the pin is interference-fitted. The interference fit is used to tighten the cone 2 and the chassis 1, preventing them from moving around under force and extending the service life of the positioning device.

[0013] During the manufacturing and installation of the positioning device, the two end faces of the cone are machined together to ensure the parallelism requirements shown in the drawing and the dimension H is marked. During the machining of the fairing parts, the overall height of the part can be indirectly measured by measuring dimension h in the drawing. (H+h) The purpose of this invention is to provide a machining auxiliary positioning device to solve the problems of difficult positioning and high processing quality requirements for fairing-type parts.

[0014] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these changes and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A positioning device for machining fairing-type parts, characterized in that, Includes chassis, cone, mandrel, pressure ring, pressure cap, and bolts with holes, among which, The chassis is fixed to the machine tool table. A mandrel is installed at the center of the chassis. The mandrel has an end face for mounting parts. The mandrel matches the inner diameter of the small end of the parts. Then, a pressure ring and a pressure cap are installed in sequence to fix the parts on the mandrel. A cone is also fixed on the chassis, located on the outer periphery of the part, with one end face fixed to the chassis by multiple bolts; multiple perforated bolts are also provided on the cone, with pressure blocks at the ends of the perforated bolts, and the inner part is pressed and fixed by adjusting the perforated bolts.

2. The positioning device for machining fairing-type parts as described in claim 1, characterized in that, A pin is provided between the end face of the cone and the base, and the pin is interference-fitted.

3. The positioning device for machining fairing-type parts as described in claim 1, characterized in that, The pressure block is made of nylon, and its outer surface is designed as a conical surface to mate with the part.

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