A high-silica fiber composite material arc surface inclined hole multi-angle drilling clamp

Abstract

The utility model discloses a kind of high-silica fibre composite material arc surface inclined hole multi-angle drilling clamps, comprising: fixed seat, rotating mechanism, angle adjustment positioning mechanism, workpiece positioning mechanism and drill jig guiding mechanism;Rotating mechanism is used to realize the overall rotation of clamp angle, adjusts drilling station;Angle adjustment positioning mechanism is used for accurately positioning different drilling station;Workpiece positioning mechanism is used for fixed arc surface workpiece;Drill jig guiding mechanism is used to guide drill bit to carry out drilling operation.Rotating mechanism includes rotation setting on fixed seat's index plate, one end of index plate is rotatably installed on fixed seat by pivot, and the other end is fixed on fixed seat by angle adjustment positioning mechanism.Angle adjustment positioning mechanism includes first connecting hole being arranged on fixed seat, multiple angle adjusting holes being arranged on index plate and locking pin being installed between angle adjusting hole and first connecting hole.Low cost, high precision, high efficiency are realized to complete the processing of arc surface inclined hole.

Description

Technical Field

[0001] This utility model relates to the field of fixtures, specifically a multi-angle drilling fixture for arc-shaped inclined holes made of high silica fiber composite material. Background Technology

[0002] In machining, it is often necessary to machine oblique holes in multiple directions and at different angles on arc surfaces or cylindrical surfaces. Traditional methods for this type of machining mainly have the following problems: The marking and alignment method relies on the operator's experience to mark lines, and then uses general-purpose fixtures (bench vise, V-block) in conjunction with protractors, height gauges, etc., for alignment. This method is extremely inefficient, labor-intensive, difficult to align, requires a high level of worker skill, and has poor positioning accuracy and consistency, easily resulting in defective products.

[0003] Specialized tooling method: Existing specialized fixtures can typically only process angled holes at a single angle. When a workpiece has multiple angled holes at different angles, multiple sets of fixtures need to be designed, which is costly and inconvenient to manage. Multiple clamping operations result in large errors. Each angled hole at a different angle requires individual alignment and clamping, which is not only inefficient, but the accumulated positioning errors from multiple clamping operations make it difficult to guarantee the relative positional accuracy between the holes, leading to a high scrap rate.

[0004] CNC machine tool machining: Using a three-axis CNC machine tool requires the operator to repeatedly rotate the indexing plate to align the angle, a tedious, time-consuming, and labor-intensive process, and it is difficult to guarantee consistent machining accuracy. Using a multi-axis CNC machine tool (such as a four-axis or five-axis machining center) can directly achieve the machining of spatial angle holes through programming, but this method requires huge equipment investment, complex programming, high processing costs, and low production efficiency, making it difficult for small and medium-sized enterprises or traditional machine tools to implement. Utility Model Content

[0005] The purpose of this invention is to provide a multi-angle drilling fixture for arc-shaped inclined holes made of high-silica fiber composite material, so as to achieve low-cost, high-precision and high-efficiency machining of arc-shaped inclined holes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-angle drilling fixture for arc-shaped inclined holes made of high-silica fiber composite material, comprising: a fixed base, a rotating mechanism, an angle adjustment and positioning mechanism, a workpiece positioning mechanism, and a drill jig guiding mechanism; the rotating mechanism is used to drive the fixture to adjust the angle and switch drilling positions; the angle adjustment and positioning mechanism is used to accurately position different drilling positions; the workpiece positioning mechanism is used to fix the arc-shaped workpiece; and the drill jig guiding mechanism is used to guide the drill bit to perform drilling operations.

[0007] As a further improvement to the above technical solution: The rotating mechanism includes a rotating plate rotatably mounted on a fixed base. One end of the rotating plate is rotatably mounted on the fixed base via a rotating shaft, and the other end is fixed on the fixed base via an angle adjustment and positioning mechanism.

[0008] The angle adjustment and positioning mechanism includes a first connecting hole on the fixed base, multiple angle adjustment holes on the rotating plate, and a locking pin installed between the angle adjustment holes and the first connecting hole.

[0009] The workpiece positioning mechanism includes a support positioning plate and a drill template mounted on the indexing plate. The drill template is positioned above the support positioning plate, and an accommodating space is provided between the drill template and the support positioning plate. The workpiece to be processed is placed in the accommodating space.

[0010] The drill jig guiding mechanism includes a plurality of guide holes disposed on the drill jig template, the guide holes being evenly distributed circumferentially around the rotating shaft.

[0011] A drill bushing is provided on the guide hole. The guide hole is prone to wear and enlargement. After the drill bushing is installed, it can be replaced when it wears out.

[0012] The guide hole and the angle adjustment hole are positioned to correspond so that the axis of the guide hole to be processed is perpendicular to the worktable surface.

[0013] The rotation plate is provided with an ejection hole, which is located on one side of the accommodating space.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1) One-time clamping, multi-hole machining: The workpiece only needs to be clamped once. By rotating and adjusting the angle of the indexing plate, it can be quickly switched to machining stations at different angles, which greatly improves production efficiency and reduces auxiliary time.

[0015] 2) High precision and good consistency: The use of indexing plates and locking pins for angle positioning eliminates the error of manual alignment, ensuring the consistency of the angle and position of each hole in the same batch of workpieces. The processing accuracy and efficiency are far greater than manual alignment.

[0016] 3) Simple operation and reduced reliance on worker skills: Operators do not need to have superb skills and can simply process according to the predetermined hole positions and pins, which reduces the difficulty of operation and training costs.

[0017] 4) High rigidity and stability: The overall structure is compact, which ensures good rigidity and stability during drilling and improves the dimensional accuracy of the machining. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present invention; Figure 2This is a side view of the structure of this utility model.

[0019] Reference numerals: 1. Fixed base; 11. First connecting hole; 2. Rotating plate; 21. Angle adjustment hole; 22. Ejection hole; 3. Support positioning plate; 4. Drill template; 41. Guide hole; 5. Accommodation space; 6. Locking pin; 7. Rotating shaft. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating orientation or position, are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1 and Figure 2As shown in the figure, the high-silica fiber composite material arc surface oblique hole multi-angle drilling fixture of this embodiment includes: a fixed base 1, a rotating mechanism, an angle adjustment and positioning mechanism, a workpiece positioning mechanism, and a drill jig guiding mechanism; the rotating mechanism is used to drive the fixture to adjust the angle and switch the drilling position; the angle adjustment and positioning mechanism is used to accurately position different drilling positions; the workpiece positioning mechanism is used to fix the arc surface workpiece; and the drill jig guiding mechanism is used to guide the drill bit to perform drilling operations.

[0025] The rotating mechanism includes a pivot plate 2 rotatably mounted on a fixed base 1. One end of the pivot plate 2 is rotatably mounted on the fixed base 1 via a rotating shaft 7, and the other end is fixed to the fixed base 1 via an angle adjustment and positioning mechanism. Specifically, a bushing is provided at one end of the pivot plate 2, and the rotating shaft 7 passes through the bushing and is connected to the fixed base 1 via a bearing. A retaining ring is provided at the end of the rotating shaft 7 to restrict axial movement, ensuring that the pivot plate 2 rotates flexibly around the rotating shaft 7 without deviation. The angle adjustment and positioning mechanism includes a first connecting hole 11 on the fixed base 1, multiple angle adjustment holes 21 on the indexing plate 2, and a locking pin 6 installed between the angle adjustment holes 21 and the first connecting hole 11. The angle adjustment holes 21 are formed by CNC milling in one operation to ensure the accuracy of the hole position angle, and cooperate with the first connecting hole 11 on the fixed base 1 to achieve precise positioning.

[0026] The workpiece positioning mechanism includes a support positioning plate 3 and a drilling template 4 mounted on the indexing plate 2. The drilling template 4 is positioned above the support positioning plate 3, and a receiving space 5 is provided between the drilling template 4 and the support positioning plate 3. The workpiece to be processed is placed in the receiving space 5. The upper surface of the support positioning plate 3 is machined into an arc-shaped contact surface that matches the arc surface of the workpiece, and the lower surface of the drilling template 4 is correspondingly provided with an arc-shaped pressing surface. The two together form a receiving space 5 that adapts to the shape of the workpiece.

[0027] A drill bushing is installed on the guide hole 41. The guide hole 41 is prone to wear and enlargement. After the drill bushing is installed, it can be replaced when worn. The carbide drill bushing is installed in the guide hole 41 with an interference fit. The inner diameter of the drill bushing is clearance-fitted with the outer diameter of the drill bit to be processed (clearance ≤ 0.02mm), which ensures smooth feed of the drill bit and avoids drilling deviation.

[0028] The drill jig guiding mechanism includes a number of guide holes 41 set on the drill template 4. The guide holes 41 are evenly distributed in a circle around the rotating shaft 7. The distribution angle matches the angle of the inclined hole to be machined on the workpiece.

[0029] The guide hole 41 and the angle adjustment hole 21 are positioned to correspond, so that the axis of the guide hole to be processed is perpendicular to the worktable surface.

[0030] The indexing plate 2 is provided with an ejection hole 22, which is located on one side of the accommodating space 5.

[0031] In use, the fixture is installed on the drilling machine worktable (fixed by bolts or other structures). The workpiece is placed in the receiving space 5 between the support positioning plate 3 and the drilling template 4. The workpiece is pushed axially along the receiving space until its end face is tightly against the indexing plate 2, thus completing the positioning. The indexing plate 2 is swung to adjust a set of angles, aligning the holes of the indexing plate 2 and the fixed seat 1 (angle adjustment hole 21 and first connecting hole 11). The locking pin 6 is inserted to fix the hole positions; the axis of the guide hole 41 of the drilling template 4 is made perpendicular to the worktable surface. The drill bit can be inserted into the guide hole 41 of the drilling template 4. The drilling machine is started to process the first set of inclined holes. The indexing plate 2 is adjusted to other target angles, aligning the corresponding angle adjustment hole 21 and first connecting hole 11. After the locking pin 6 is inserted to fix it, inclined holes of other angles can be processed. After all holes are processed, the workpiece is ejected by inserting the ejector pin into the ejector hole 22.

[0032] This invention provides a fixture for drilling multiple angled holes on an arc surface in a single clamping operation. This fixture enables companies without multi-axis CNC machine tools to perform the machining of arc-shaped inclined holes in a low-cost, high-precision, and efficient manner.

[0033] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-angle drilling fixture for inclined holes on an arc surface made of high-silica fiber composite material, characterized in that, include: The components include a fixed base (1), a rotating mechanism, an angle adjustment and positioning mechanism, a workpiece positioning mechanism, and a drill jig guiding mechanism; the rotating mechanism is used to drive the fixture to adjust the angle and switch the drilling position; the angle adjustment and positioning mechanism is used to accurately position different drilling positions; the workpiece positioning mechanism is used to fix the arc-shaped workpiece; and the drill jig guiding mechanism is used to guide the drill bit to perform drilling operations.

2. The high-silica fiber composite material arc-shaped inclined hole multi-angle drilling fixture according to claim 1, characterized in that: The rotating mechanism includes a rotating plate (2) rotatably mounted on a fixed base (1). One end of the rotating plate (2) is rotatably mounted on the fixed base (1) via a rotating shaft (7), and the other end is fixed on the fixed base (1) via an angle adjustment and positioning mechanism.

3. The high-silica fiber composite material arc-shaped inclined hole multi-angle drilling fixture according to claim 1, characterized in that: The angle adjustment and positioning mechanism includes a first connecting hole (11) on the fixed base (1), a plurality of angle adjustment holes (21) on the rotating plate (2), and a locking pin (6) installed between the angle adjustment hole (21) and the first connecting hole (11).

4. The high-silica fiber composite material arc-shaped inclined hole multi-angle drilling fixture according to claim 2, characterized in that: The workpiece positioning mechanism includes a support positioning plate (3) and a drilling template (4) mounted on the indexing plate (2). The drilling template (4) is positioned above the support positioning plate (3). A accommodating space (5) is provided between the drilling template (4) and the support positioning plate (3). The workpiece to be processed is placed in the accommodating space (5).

5. The high-silica fiber composite material arc-shaped inclined hole multi-angle drilling fixture according to claim 4, characterized in that: The drill jig guide mechanism includes a plurality of guide holes (41) disposed on the drill jig template (4), and the guide holes (41) are evenly distributed in a circle around the rotating shaft (7).

6. The high-silica fiber composite material arc-shaped inclined hole multi-angle drilling fixture according to claim 5, characterized in that: A drill sleeve is provided on the guide hole (41).

7. The high-silica fiber composite material arc-shaped inclined hole multi-angle drilling fixture according to claim 6, characterized in that: The guide hole (41) and the angle adjustment hole (21) are positioned to correspond so that the axis of the guide hole to be processed is perpendicular to the worktable surface.

8. The high-silica fiber composite material arc-shaped inclined hole multi-angle drilling fixture according to any one of claims 5-7, characterized in that: The rotating plate (2) is provided with an ejection hole (22), which is located on one side of the accommodating space (5).

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