Machining device of stepped drill for composite material
By designing a step drilling processing device including Mohs cone shank and slider, the various types of equipment in the prior art are solved, and efficient processing of step drills of various sizes is achieved, reducing production costs and simplifying operations.
Patent Information
- Application Number
- CN202420937166.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-30
AI Technical Summary
Existing step drilling processing devices are usually aimed at one size, resulting in high production costs and a wide variety of equipment, and the inability to effectively process step drills of multiple sizes in composite materials.
A mechanical processing device including a step drill positioning mount and a clamping mechanism is designed. It can adapt to step drill drill of different sizes using a structure of Mohs cone handle, U-shaped groove, positioning round pin, slider and locking bolt. The handle is made in multiple sizes through sliding and clamping mechanisms.
A mechanical processing device can process step drills of multiple sizes, reducing production costs, and simple structure and easy operation, which significantly improves processing efficiency.
Smart Images
Figure CN222345815U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a drill processing device, in particular to a mechanical processing device for a step drill for composite materials, belonging to the technical field of drilling tools. Background Art
[0002] Composite materials are two-phase or multi-phase structural materials made by mixing a soft and viscous matrix material with a high-strength and high-hardness fiber-reinforced material. Their anisotropy, low thermal conductivity, and low interlayer bonding strength make them typical difficult-to-process materials. For example, carbon fiber reinforced composite materials (CFRP), as an advanced composite material, have excellent comprehensive properties such as high specific strength, high specific stiffness, fatigue resistance, corrosion resistance, and excellent designability. They have been widely used in aerospace, automotive and other fields, such as the Airbus A350XWB. The extensive use of composite materials has greatly reduced the weight of aircraft structures and improved the fuel economy of aircraft. However, in order to achieve the connection and assembly of composite parts, a series of mechanical processing is required, and drilling is one of the most labor-intensive mechanical processing. Since composite materials show obvious anisotropy and stacking characteristics in the macroscopic view, the interlayer bonding strength is much lower than that in other directions. When drilling, due to the weak constraints of the entrance and exit positions, the drill tip is very likely to generate a large axial force, push open the outermost layers of materials, and cause stratification damage. The fiber cannot be cut, which causes fiber bending, tearing, burrs and other damage. For this reason, domestic and foreign researchers have developed a variety of drilling tools with different structural geometric forms. Among them, the step drill solves the technical problems of easy stratification of composite materials during drilling, and completes the entire processing process in one go, while achieving better hole surface quality. However, due to the large number of holes that need to be drilled on the composite material and the different hole diameters, the step drill has a wide variety of sizes. The existing step drill processing device is usually a processing device for processing a step drill of one size, resulting in a large number of step drill processing devices, which greatly increases the production cost. Summary of the invention
[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a machining device for machining step drills for composite materials which can process step drills of various sizes, can reduce production costs and has a simple structure and is easy to operate.
[0004] In order to solve the above technical problems, the utility model adopts such a mechanical processing device for a step drill for composite materials, including a step drill positioning mounting seat and a step drill clamping mechanism, the step drill positioning mounting seat includes a Morse taper shank, a left side plate, a right side plate and a bottom plate, the left side plate and the right side plate are parallel to each other and arranged at intervals, the bottom plate is located between the left side plate and the right side plate, a U-shaped groove is provided on the top of the bottom plate, a positioning round pin is provided in the U-shaped groove, a center positioning hole is provided on the drill shank of the step drill, the positioning round pin is adapted to the center positioning hole, the Morse taper shank is fixedly connected to the bottom of the bottom plate or the two are formed as one The step drill clamping mechanism includes a left slide plate and a right slide plate, the left slide plate and the right slide plate are placed in the U-shaped groove and slideably cooperate with the U-shaped groove, the left slide plate is provided with a left groove with a semicircular cross-section, and the right slide plate is provided with a right groove with a semicircular cross-section, the left groove and the right groove are vertically and oppositely arranged, the positioning round pin is located between the left groove and the right groove, at least one left locking bolt is installed on the left side plate, and the end of the left locking bolt is against the left slide plate, and at least one right locking bolt is installed on the right side plate, and the end of the right locking bolt is against the right slide plate.
[0005] As a preferred embodiment of the present utility model, there are three left locking bolts and they are spaced apart in the vertical direction along the length direction of the left side plate, and there are three right locking bolts and they are spaced apart in the vertical direction along the length direction of the right side plate.
[0006] As a preferred implementation manner of the present utility model, the left locking bolt and the right locking bolt are both hexagon socket bolts.
[0007] After adopting the above structure, the utility model has the following beneficial effects:
[0008] The left groove on the left slide plate and the right groove on the right slide plate of the utility model are used for installing and placing drill shanks of step drills of different sizes. When working, the central positioning hole on the drill shank is coaxially matched with the positioning round pin in the U-shaped groove, and then the left slide plate and the right slide plate are slid to match the drill shanks of the step drills of different sizes, and the left locking bolt and the right locking bolt are tightened to clamp the drill shank of the left slide plate and the right slide plate, and the Morse taper shank can be installed on the machine tool for cutting processing, so as to obtain step drills of various sizes.
[0009] The utility model can process step drills of various sizes with one mechanical processing device, greatly reducing the production cost, and has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings.
[0011] Figure 1The utility model is a structural schematic diagram of a mechanical processing device for a step drill for composite materials.
[0012] Figure 2 The utility model is a structural schematic diagram of a stepped drill positioning mounting seat.
[0013] Figure 3 The utility model is a structural schematic diagram of a step drill. DETAILED DESCRIPTION
[0014] See also Figures 1 to 3 The step drill for composite materials shown in the figure comprises a step drill positioning mounting seat 1 and a step drill clamping mechanism 2, wherein the step drill positioning mounting seat 1 comprises a Morse taper handle 1-1, a left side plate 1-2, a right side plate 1-3 and a bottom plate 1-4, wherein the left side plate 1-2 and the right side plate 1-3 are parallel to each other and arranged at intervals, wherein the bottom plate 1-4 is located between the left side plate 1-2 and the right side plate 1-3, wherein a U-shaped groove 1a is provided on the top of the bottom plate 1-4, and a positioning round pin is provided in the U-shaped groove 1a 3, the positioning round pin 3 is preferably arranged in the middle position of the U-shaped groove 1a, the drill handle of the step drill 4 is provided with a central positioning hole 4-1, the positioning round pin 3 is adapted to the central positioning hole 4-1, the Morse taper handle 1-1 is fixedly connected to the bottom of the base plate 1-4 by welding or the like, or the two are made into one piece; the step drill clamping mechanism 2 includes a left slide 2-1 and a right slide 2-2, the left slide 2-1 and the right slide 2-2 are placed in the U-shaped groove 1a and slide with the U-shaped groove 1a, such as Figure 1 , 2 As shown, the bottom of the left skateboard 2-1 and the right skateboard 2-2 are slidably matched with the U-shaped groove 1a, and a left groove 2a with a semicircular cross-section is provided on the left skateboard 2-1, and a right groove 2b with a semicircular cross-section is provided on the right skateboard 2-2. The left groove 2a and the right groove 2b are vertically and oppositely arranged, and the positioning round pin 3 is located between the left groove 2a and the right groove 2b. At least one left locking bolt 5 is installed on the left side plate 1-2, and the end of the left locking bolt 5 is against the left skateboard 2-1. At least one right locking bolt 6 is installed on the right side plate 1-3, and the end of the right locking bolt 6 is against the right skateboard 2-2.
[0015] As a preferred embodiment of the present invention, Figure 1 , 2 As shown, there are three left locking bolts 5 and they are spaced apart in the vertical direction along the length direction of the left side plate 1 - 2 , and there are three right locking bolts 6 and they are spaced apart in the vertical direction along the length direction of the right side plate 1 - 3 .
[0016] As a preferred embodiment of the present invention, the left locking bolt 5 and the right locking bolt 6 are both hexagon socket bolts.
[0017] When the utility model is working, the central positioning hole 4-1 on the drill shank of the step drill 4 is coaxially matched with the positioning round pin 3 in the U-shaped groove 1a, and then the left slide plate 2-1 and the right slide plate 2-2 are slid to match the drill shanks of the step drills of different sizes, and the left locking bolt 5 and the right locking bolt 6 are tightened to clamp the drill shank of the left slide plate 2-1 and the right slide plate 2-2, and the Morse taper shank 1-1 is installed on the machine tool for cutting processing, so as to obtain step drills of various sizes.
[0018] After trial use, the utility model has the advantages of simple structure and convenient operation, and one mechanical processing device can process step drills of various sizes, thus reducing the production cost and achieving good practical effect.
Claims
1. A mechanical processing device for a composite material step drill, characterized in that: The invention comprises a step drill positioning mounting seat (1) and a step drill clamping mechanism (2), wherein the step drill positioning mounting seat (1) comprises a Morse taper shank (1-1), a left side plate (1-2), a right side plate (1-3) and a bottom plate (1-4), wherein the left side plate (1-2) and the right side plate (1-3) are arranged parallel to each other and spaced apart, and the bottom plate (1-4) is located between the left side plate (1-2) and the right side plate (1-3), a U-shaped groove (1a) is provided on the top of the bottom plate (1-4), a positioning round pin (3) is provided in the U-shaped groove (1a), a center positioning hole (4-1) is provided on the drill shank of the step drill (4), the positioning round pin (3) is matched with the center positioning hole (4-1), and the Morse taper shank (1-1) is fixedly connected to the bottom of the bottom plate (1-4) or the two are made in one piece; the step drill clamping mechanism (2) comprises a left slide plate ( The invention relates to a left plate (2-1) and a right plate (2-2), wherein the left plate (2-1) and the right plate (2-2) are placed in the U-shaped groove (1a) and slidably cooperate with the U-shaped groove (1a), the left plate (2-1) is provided with a left groove (2a) with a semicircular cross section, and the right plate (2-2) is provided with a right groove (2b) with a semicircular cross section, the left groove (2a) and the right groove (2b) are arranged vertically and opposite to each other, the positioning round pin (3) is located between the left groove (2a) and the right groove (2b), at least one left locking bolt (5) is installed on the left side plate (1-2), the end of the left locking bolt (5) abuts against the left plate (2-1), and at least one right locking bolt (6) is installed on the right side plate (1-3), the end of the right locking bolt (6) abuts against the right plate (2-2).
2. The machining device for composite material step drill according to claim 1, characterized in that: There are three left locking bolts (5) arranged at intervals in the vertical direction along the length direction of the left side plate (1-2), and there are three right locking bolts (6) arranged at intervals in the vertical direction along the length direction of the right side plate (1-3).
3. The machining device for a composite material step drill according to claim 1 or 2, characterized in that: The left locking bolt (5) and the right locking bolt (6) are both hexagon socket bolts.