Milling machine fixture for machining shapes and holes of thin aluminum parts
By combining wedge bolts and open sleeves in a fixture design, the problems of deformation and clamping marks caused by clamping during the processing of thin aluminum parts for aerospace applications were solved, achieving high-precision machining and efficient production.
Patent Information
- Application Number
- CN202423255980.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-29
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-29
AI Technical Summary
Existing technologies for machining thin aluminum parts for aerospace applications suffer from deformation and clamping marks due to clamping, making it difficult to meet high-precision requirements.
The fixture adopts a combination of wedge bolts and open sleeves. By cooperating with the outer conical surface of the wedge bolts and the inner conical surface of the open sleeves, full contact clamping of the inner hole of the part is achieved, avoiding uneven force distribution. Combined with the step design under the base stop, the machining of the shape and hole can be completed in one clamping.
Ensure the size, shape and appearance accuracy of parts, reduce the number of clamping operations, improve work efficiency, avoid clamping marks, achieve uniform clamping, and prevent parts from deforming.
Smart Images
Figure CN223670729U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of milling machine clamps for processing the outer shape and hole of thin aluminum piece, belong to mechanical processing milling machine clamps technical field. BACKGROUND
[0002] The thin aluminum piece is the motor adapter plate on some mechanism, and the common processing method should be to use three-jaw chuck to tighten inner hole to process outer shape, then drill and mill hole after using pressing plate to press part, but as aviation piece, part precision requirement is high, and part surface cannot have defect including trace due to clamping when using, three-jaw chuck clamping mode can make part produce inner hole deformation due to too thin and uneven stress, and pressing plate pressing part can leave the indentation due to pressing on part surface. SUMMARY
[0003] The utility model provides a kind of milling machine clamps for processing the outer shape and hole of thin aluminum piece, solve the deformation and clamping mark etc.
[0004] The utility model is realized by the following technical solutions:
[0005] A kind of milling machine clamps for processing the outer shape and hole of thin aluminum piece, including base, wedge bolt and open sleeve, base is equipped with stop, wedge bolt can pass through stop and be connected with base by thread, wedge bolt head is equipped with outer taper surface, and cooperates with inner taper surface of open sleeve.
[0006] The taper of the cooperation between the outer taper surface of wedge bolt and the inner taper surface of open sleeve is 10 °.
[0007] Wedge bolt head is milled flat, and it is convenient for spanner operation.
[0008] Step is arranged below the stop of base.
[0009] The step arranged below the stop of base is rounded in a week.
[0010] The utility model guarantees part size, shape position precision and appearance;Reduce clamping times, improve work efficiency;Simple structure, convenient operation. DRAWINGS
[0011] Figure 1 It is two-dimensional schematic diagram for the overall structure of the clamp, in the drawing, 1. base, 2. wedge bolt, 3 open sleeve;
[0012] Figure 2 It is Figure 1 The top view. DETAILED DESCRIPTION
[0013] As Figure 1 , 2As shown, the wedge bolt 2 is connected with the base 1 through thread, the open sleeve 3 is put into the inner hole of the workpiece, the inner hole of the workpiece is stopped by the base 1, the lower plane of the workpiece is close to the lower plane of the base 1, the lower surface of the open sleeve 3 is attached to the upper surface of the base 1, the wedge bolt 2 is rotated downward to make the outer taper surface of the wedge bolt 2 contact with the inner taper surface of the open sleeve 3 and make the open sleeve 3 expand, the wedge bolt 2 is continuously rotated downward until the outer circle of the open sleeve 3 is expanded to tightly contact the inner hole of the workpiece to make the inner hole of the workpiece generate enough clamping force for machining.
[0014] The utility model discloses the cooperation between parts, change the full contact of the inner hole of the workpiece and the clamp of clamp clamping diameter, avoid the deformation of the part because of the uneven stress, and the step under the clamp stopper avoids the range of the drilling of the workpiece, so that milling and drilling can be completed in one process, and the step one round corner protects the position of the contact of the workpiece and the clamp from being scratched during loading and unloading.
Claims
1. A jig for a milling machine for machining the profile and holes of thin aluminium parts, characterised in that: The base is provided with a stopper, the wedge bolt can pass through the stopper and be connected with the base through screw thread, and the wedge bolt head is provided with an outer taper surface matched with an inner taper surface of the open sleeve.
2. The fixture according to claim 1, wherein: The taper of the outer taper surface of the wedge bolt matched with the inner taper surface of the open sleeve is 10°.
3. The fixture according to claim 1, wherein: the fixture is characterized by the following features: The wedge bolt head is milled flat, facilitating the operation of a wrench.
4. The fixture according to claim 1, wherein: The base stopper is provided with a step below.
5. The fixture according to claim 4, wherein: The step provided below the base stopper is chamfered around.