A four-axis rotary drilling and milling fixture

Abstract

This utility model provides a four-axis rotary drilling and milling fixture, comprising: a fixture base mounted on the chuck of a machine tool; multiple support blocks mounted on the fixture base for abutting against the end face of an end plate on one side of the workpiece; a positioning mechanism mounted on the fixture base for positioning the end plate on one side of the workpiece; multiple 90-degree rotation cylinders mounted on the fixture base for pressing the end plate on one side of the workpiece around its perimeter; a support seat mounted on the machine tool's worktable; a standard thrust cylinder mounted on the support seat for providing axial thrust; and a positioning push rod connected to the standard thrust cylinder for positioning and pressing the cylindrical section on the other side of the workpiece. This utility model can improve workpiece clamping efficiency and positioning accuracy, and reduce process difficulty.

Description

Technical Field

[0001] This utility model mainly relates to the field of machining technology for rotary disc parts, specifically to a four-axis rotary drilling and milling fixture. Background Technology

[0002] Currently, in the milling process for machining rotary disc-shaped parts, the following methods are commonly used for clamping and positioning the parts:

[0003] 1. Clamping with a clamping plate: For workpieces with large shapes and dimensions or those inconvenient to clamp with a machine vise, a clamping plate is commonly used to mount them on the milling machine table for machining. The clamping plate uses T-bolts, nuts, and stepped shims to press the workpiece firmly onto the table. This positioning method has high requirements for the clamping position, the selection of shims, and the uniformity of the clamping force of each bolt, and requires a high level of operator skill. The clamping position may interfere with the working tool, requiring secondary clamping to complete the machining. Repeatable positioning of the workpiece is difficult to guarantee, and in batch production, the dimensional consistency of the workpiece is poor.

[0004] 2. Flat-jaw vise clamping: For small to medium-sized workpieces with simple shapes, machining flat-jaw vises can be used to directly clamp the workpiece. This positioning method has certain requirements on the shape of the workpiece; it is easy to leave clamping marks on the workpiece surface; it cannot be repeatedly positioned; and during mass production, the workpiece dimensional consistency is poor.

[0005] 3. Indexing head or chuck: The indexing head or chuck is fixed to the milling machine's worktable to clamp the workpiece. This positioning method requires high-quality machine tools, including space and an interface for installing the indexing head or chuck.

[0006] IV. Toggle Clamp: The toggle clamp is fixed to the milling machine worktable or fixture base plate, and the workpiece is locked in place using the toggle clamp. This positioning method has poor repeatability; at the same time, the clamping position of the toggle clamp may interfere with the working tool, requiring secondary clamping to complete the machining.

[0007] V. Vacuum chucks and magnetic chucks: These methods use negative pressure or magnetic force to clamp and fix the workpiece. This positioning method is suitable for specific part structures and materials.

[0008] 6. Adhesive bonding: The workpiece is adhered to the milling machine worktable or fixture base plate using adhesive. This positioning method has low production efficiency; the adhesive thickness has a significant impact on machining accuracy; and the reliability of the adhesive bonding cannot be guaranteed.

[0009] In summary, existing rotary disc-type parts, such as cylindrical connectors, suffer from problems such as high clamping difficulty, inconvenient positioning, and low process efficiency during milling. To solve these problems, this application designs a special clamping and positioning fixture to improve clamping efficiency and positioning accuracy while reducing process difficulty.

[0010] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0011] 1. The technical problem to be solved by the utility model:

[0012] This utility model provides a four-axis rotary drilling and milling fixture to solve the technical problems existing in the background art.

[0013] 2. Technical Solution:

[0014] To achieve the above objectives, the technical solution provided by this utility model is: a four-axis rotary drilling and milling fixture, comprising:

[0015] Tooling base, mounted on the chuck of the machine tool;

[0016] Multiple support blocks are installed on the tooling base to abut against the end face of the end plate supported on one side of the workpiece;

[0017] A positioning mechanism, mounted on the tooling base, is used to position the end plate on one side of the workpiece;

[0018] Multiple 90-degree rotating cylinders are installed on the tooling base to press the end plate on one side of the workpiece around its perimeter.

[0019] Support base, mounted on the machine tool's worktable;

[0020] A standard thrust cylinder, mounted on the support, is used to provide axial thrust;

[0021] The positioning push rod is connected to the standard thrust cylinder and is used to position and press the column on the other side of the workpiece.

[0022] Furthermore, the positioning mechanism includes two positioning pins, which are diagonally distributed on the tooling base. Each positioning pin includes a mounting block and a positioning short rod disposed on the mounting block. The mounting block is fixedly installed on the tooling base. Positioning holes are provided around the end plate of the workpiece. The positioning short rods on the two positioning pins are respectively inserted into the two positioning holes located diagonally on one side of the end plate of the workpiece for positioning.

[0023] Furthermore, the support block comprises four blocks, which are rectangularly distributed on the tooling base, and the thickness of the support block is the same as the thickness of the mounting block on the positioning pin.

[0024] Furthermore, the 90-degree corner cylinder includes four sets, which are rectangularly distributed on the tooling base. Each set includes two 90-degree corner cylinders. These four sets of 90-degree corner cylinders are respectively located on both sides of the right-angled sides of the four corners of the upper end plate of the workpiece, and the 90-degree corner cylinders are used to press the end plate of the workpiece around.

[0025] Furthermore, the workpiece includes a column and an end plate extending outward from one side of the column. A connecting plate is provided inside the other side of the column. A positioning groove is formed around the other side of the column and the connecting plate. The diameter of the positioning groove is adapted to the diameter of the positioning push rod. The positioning push rod is pressed against the connecting plate inside the positioning groove.

[0026] Furthermore, the thrust of the standard thrust cylinder is adjustable; the tooling base is provided with mounting holes for fixed connection with the chuck of the machine tool.

[0027] Furthermore, the machine tool is an existing four-axis rotary device.

[0028] 3. Beneficial effects:

[0029] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0030] This utility model is reasonably designed. By using cylinder clamping and positioning pin positioning, in actual operation, after the machining fixture is fixed, the workpiece installation and disassembly process only requires completing the steps of "cleaning → placing → starting the cylinder → relaxing the cylinder → removing the workpiece → cleaning". It has a high degree of automation, is convenient and simple to operate, and has high efficiency. The cylinder clamping force is uniform and the clamping effect is stable and reliable. It avoids the frequent operation of tightening and loosening bolts and adjusting shims in other clamping and positioning methods, effectively improving clamping efficiency and positioning accuracy, reducing process difficulty, and ensuring the consistency of product dimensions.

[0031] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the tooling of this utility model;

[0033] Figure 2 This is a schematic diagram showing the distribution structure of the various components on the tooling base of this utility model;

[0034] Figure 3 This is a schematic diagram of the installation structure of each component on the support base of this utility model;

[0035] Figure 4This is an enlarged structural diagram of the positioning pin on the tooling base of this utility model;

[0036] Figure 5 This is a schematic diagram of the workpiece structure to be processed according to this utility model.

[0037] Figure label:

[0038] 1. Support base; 2. Standard thrust cylinder; 3. Positioning rod; 4. Tooling base; 5. 90-degree rotation cylinder; 6. Support block; 7. Positioning pin; 701. Mounting block; 702. Positioning short rod; 8. Workpiece; 801. Column; 802. End plate; 803. Positioning hole; 804. Positioning groove. Detailed Implementation

[0039] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0043] See attached document Figure 1-5 This embodiment of a four-axis rotary drilling and milling fixture includes:

[0044] Tooling base 4 is mounted on the chuck of the machine tool; the machine tool is an existing four-axis rotary device;

[0045] Multiple support blocks 6 are installed on the tooling base 4 and are used to abut against the end face of the end plate 802 supported on one side of the workpiece 8.

[0046] The positioning mechanism is installed on the tooling base 4 and is used to position the end plate 802 on one side of the workpiece 8.

[0047] Multiple 90-degree rotating cylinders 5 are installed on the tooling base 4 to press the end plate 802 on one side of the workpiece 8.

[0048] Support base 1 is installed on the machine tool's worktable;

[0049] A standard thrust cylinder 2 is mounted on the support 1 to provide axial thrust;

[0050] The positioning rod 3 is connected to the standard thrust cylinder 2 and is used to position and press the column 801 on the other side of the workpiece 8.

[0051] The positioning mechanism includes two positioning pins 7, which are diagonally distributed on the tooling base 4. Each positioning pin 7 includes a mounting block 701 and a positioning short rod 702 disposed on the mounting block 701. The mounting block 701 is fixedly installed on the tooling base 4. Positioning holes 803 are opened around the end plate 802 of the workpiece 8. The positioning short rods 702 on the two positioning pins 7 are respectively inserted into the two positioning holes 803 located diagonally on one side of the end plate 802 of the workpiece 8 for positioning.

[0052] The support block 6 includes four blocks, which are rectangularly distributed on the tooling base 4. The thickness of the support block 6 is the same as the thickness of the mounting block 701 on the positioning pin 7.

[0053] The 90-degree corner cylinder 5 includes four sets, which are rectangularly distributed on the tooling base 4. Each set includes two 90-degree corner cylinders 5. These four sets of 90-degree corner cylinders 5 are respectively located on both sides of the right angle side of the four corners of the upper end plate 802 of the workpiece 8. The 90-degree corner cylinders 5 are used to press the end plate 802 of the workpiece 8 around.

[0054] The workpiece 8 includes a cylindrical column 801 and an end plate 802 extending outwards from one side of the cylindrical column 801. A connecting plate is provided on the other side of the cylindrical column 801. A positioning slot 804 is formed around the connecting plate and the other side of the cylindrical column 801. The diameter of the positioning slot 804 matches the diameter of the positioning push rod 3. The positioning push rod 3 presses against the connecting plate inside the positioning slot 804. During operation, the positioning push rod 3 enters the positioning slot 804 of the workpiece 8, positioning it. At this time, a four-axis rotary device rotates 360 degrees, and the spindle performs drilling and milling operations on the workpiece 8, achieving the goal of reducing processing steps and increasing production capacity.

[0055] The positioning hole 803 and positioning slot 804 are used to cooperate with the positioning top rod 3 and positioning short rod 702 to achieve precise positioning.

[0056] It is worth noting that this fixture is a special-purpose fixture. The 90-degree rotary cylinder 5 is an existing 90-degree rotary cylinder. The standard thrust cylinder 2 is an existing standard thrust cylinder, and its thrust is adjustable. The fixture base 4 is provided with mounting holes for fixed connection with the machine tool chuck. The positioning pin 7 is a detachable structure for easy replacement and maintenance.

[0057] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A four-axis rotary drilling and milling tool characterized by, include: Tooling base (4) is installed on the chuck of the machine tool; Multiple support blocks (6) are installed on the tooling base (4) to abut against the end plate (802) supported on one side of the workpiece (8); The positioning mechanism is installed on the tooling base (4) and is used to position the end plate (802) on one side of the workpiece (8); Multiple 90-degree rotating cylinders (5) are installed on the tooling base (4) to press the end plate (802) on one side of the workpiece (8) around. Support base (1), installed on the machine tool worktable; A standard thrust cylinder (2) is mounted on the support base (1) to provide axial thrust; The positioning rod (3) is connected to the standard thrust cylinder (2) and is used to position and press the column (801) on the other side of the workpiece (8).

2. A four-axis rotary drilling and slotting tooling according to claim 1, characterized in that: The positioning mechanism includes two positioning pins (7), which are diagonally distributed on the tooling base (4). Each positioning pin (7) includes a mounting block (701) and a positioning short rod (702) set on the mounting block (701). The mounting block (701) is fixedly installed on the tooling base (4). Positioning holes (803) are opened around the end plate (802) of the workpiece (8). The positioning short rods (702) on the two positioning pins (7) are respectively inserted into the two positioning holes (803) located on the diagonal of the end plate (802) on one side of the workpiece (8) for positioning.

3. A four-axis rotary drilling and slotting tooling according to claim 2, characterized in that: The support block (6) includes four blocks, which are rectangularly distributed on the tooling base (4). The thickness of the support block (6) is the same as the thickness of the mounting block (701) on the positioning pin (7).

4. A four-axis rotary drilling and slotting tooling according to claim 3, wherein: The 90-degree corner cylinder (5) includes four sets. The four sets of 90-degree corner cylinders (5) are rectangularly distributed on the tooling base (4). Each set includes two 90-degree corner cylinders (5). These four sets of 90-degree corner cylinders (5) are respectively located on both sides of the right angle side of the four corners of the upper end plate (802) of the workpiece (8). The 90-degree corner cylinders (5) press the end plate (802) of the workpiece (8) around.

5. A four-axis rotary drilling and slotting tooling according to claim 4, wherein: The workpiece (8) includes a column (801) and an end plate (802) extending outward from one side of the column (801). A connecting plate is provided on the other side of the column (801). A positioning groove (804) is formed around the other side of the column (801). The diameter of the positioning groove (804) is adapted to the diameter of the positioning push rod (3). The positioning push rod (3) is pressed against the connecting plate inside the positioning groove (804).

6. A four-axis rotary drilling and milling tool according to claim 5, wherein: The thrust of the standard thrust cylinder (2) is adjustable; the tooling base (4) is provided with mounting holes for fixed connection with the chuck of the machine tool.

7. A four-axis rotary drilling and milling tool according to claim 1, characterized in that: The machine tool is an existing four-axis rotary device.

Images