Numerical control machining device for small rotary body parts

Abstract

The utility model discloses a small -size rotary body part numerical control processing device, including frock base body, frock base body top is connected with the relay support device through the fixed unit, and the relay support device top is connected with part pressure device and positioning pin. The utility model discloses a small -size rotary body part numerical control processing device adopts split type design, and frock base body has strong versatility, only needs to replace relay support device, need not to manufacture whole frock again, compares traditional integration special frock, greatly reduces frock manufacturing cost, shortens frock processing period, and has promoted frock to the adaptation flexibility of different parts.

Description

Technical Field

[0001] This utility model belongs to the technical field of machining equipment, specifically relating to a CNC machining device for small rotating parts. Background Technology

[0002] In the transmission system of an aircraft, eight sprocket parts with similar structures are usually required. These parts are key components of the transmission link of the aircraft. Their structure has distinct characteristics: the whole is in the shape of a rotating body, the outer periphery of the rotating body is provided with a groove structure, and the central area of ​​the part has irregular holes. There are high requirements for dimensional accuracy and geometric tolerance.

[0003] However, current technologies for machining such parts generally rely on manual scribing combined with milling, and lack dedicated tooling devices adapted to five-axis CNC equipment, resulting in several technical defects: First, existing machining methods lack dedicated part lifting structures, preventing parts from entering the swivel machining area of ​​five-axis equipment. This makes it impossible to use five-axis equipment for multi-part overall machining in a single setup, requiring individual part operations. This not only increases the number of clamping operations and causes large positioning errors but also fails to leverage the machining advantages of CNC equipment. Second, traditional tooling is mostly an integrated, dedicated design without a universal base or interchangeable support components. When new product types are added, the entire tooling needs to be redesigned and manufactured, resulting in high tooling manufacturing costs and long processing cycles, and making it difficult to quickly adapt to the machining needs of different parts. Third, part clamping uses traditional threaded and threaded hole connections. Repeated use of threaded holes leads to wear and tear, resulting in a short tooling life. Furthermore, the lack of auxiliary positioning structures makes it easy for nuts to slip or jam during assembly, affecting clamping efficiency and stability. Additionally, the lack of anti-detachment design makes clamping components prone to loosening, further increasing machining risks. In addition, the existing process relies on temporary adjustments for part positioning and clamping, and there is no standardized benchmark alignment and fixing scheme. This makes it difficult to match the precision machining requirements of five-axis gantry CNC machine tools, resulting in the ineffective application of CNC machining technology in the machining of such parts, which is still limited by the accuracy and efficiency bottleneck of manual operation. Utility Model Content

[0004] The purpose of this invention is to provide a CNC machining device for small rotating parts, which solves the problem that traditional tooling in the prior art is mostly an integrated special design without a universal base and interchangeable support components, resulting in poor reusability.

[0005] The technical solution adopted by this utility model is a small rotary part CNC machining device, including a tooling base, a transfer support device connected to the top of the tooling base through a fixed unit, and a part clamping device and a positioning pin connected to the top of the transfer support device.

[0006] The feature of this utility model is that, The adapter support device includes a base and a column. The base is a plate-shaped structure with rounded corners. A through-hole is opened in the middle of the base, and grooves matching the fixing unit are provided on the opposite sides of the base. The column is vertically fixed to the upper end face of the base, and the axis of the column is collinear with the axis of the central hole.

[0007] A protrusion is fixed to the middle of the end face of the column away from the base, and the protrusion has a through hole; the protrusion is inserted into the column.

[0008] The two through holes are symmetrically arranged along the axis of the central hole.

[0009] The parts clamping device includes a T-shaped screw, one end of which is connected to a first nut, and a spring washer is provided between the first nut and the T-shaped screw.

[0010] The T-screw extends axially into the column, with the T-shaped end of the T-screw located inside the column.

[0011] The maximum lateral length of the T-end of the T-screw is no greater than the lateral internal length of the column's internal cavity, and the thickness of the T-end along the axis of the rod is no greater than the depth of the internal cavity. The internal cavity of the column is a groove-shaped structure corresponding to the shape of the T-end of the T-screw.

[0012] The fixing unit includes a threaded rod, with a second nut connected to each end of the threaded rod, and a washer provided between each of the two second nuts and the threaded rod.

[0013] The beneficial effects of this utility model are: (1) The small rotary part CNC machining device provided by this utility model adopts a split design. The tooling base has strong versatility. Only the adapter support device needs to be replaced, and there is no need to remanufacture the entire tooling. Compared with the traditional integrated special tooling, it greatly reduces the tooling manufacturing cost, shortens the tooling processing cycle, and improves the tooling's adaptability to different parts, providing convenience for subsequent product iteration processing. In addition, the adapter support device is connected to the tooling base through bolts, washers, and nuts. It can be designed into a typical structure according to different part structures, or the parts can be classified into groups and similar parts can be designed with a common support device. For example, if a part has a square hole in the middle, a square cylinder can also be designed on the adapter support device. The square cylinder is inserted into the square hole of the part for positioning. Alternatively, positioning pins can be designed for positioning according to the holes in different positions of the part. Its function is to position and support the part according to the structure of the part.

[0014] (2) The small rotary part CNC machining device provided by this utility model adopts a split design. The part clamping device abandons the traditional thread and threaded hole connection and adopts a T-shaped structure design. The part that does not pass through the adapter support device is located in the groove. When clamping, it contacts the inner side wall of the groove to form auxiliary positioning, which effectively solves the problem of difficulty in screwing in the nut in the traditional structure. At the same time, it avoids the defect of easy wear of the threaded hole after repeated use, significantly extends the service life of the adapter support device. In addition, the T-shaped structure, together with the washer and nut, can provide a stable clamping force, ensure the clamping stability during the part processing, and reduce the accuracy error caused by processing vibration. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the CNC machining device for small rotating parts according to this utility model; Figure 2 This is a schematic diagram of the structure of the adapter support device of this utility model; Figure 3 This is a front view of the adapter support device of this utility model; Figure 4 yes Figure 3 Schematic sectional view of section AA; Figure 5 This is a schematic diagram of the part clamping device of this utility model; Figure 6 This is a schematic diagram showing the connection between the part clamping device and the adapter support device of this utility model; Figure 7 This is a structural schematic diagram of the fixing unit of this utility model; Figure 8 This is a schematic diagram of the installation of the workpiece to be processed according to this utility model.

[0016] In the diagram, 1. Tooling base; 2. Fixing unit; 3. Adapter support device; 4. Part clamping device; 5. Locating pin; 6. Workpiece to be processed; 7. T-screw; 8. Spring washer; 9. First nut; 10. Second nut; 11. Threaded rod; 12. Spring washer; 13. Column; 14. Base. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] This utility model provides a CNC machining device for small rotating parts, such as... Figure 1 As shown, it includes a tooling base 1, and a transfer support device 3 is connected to the top of the tooling base 1 via a fixing unit 2. A part clamping device 4 and a positioning pin 5 are connected to the top of the transfer support device 3. Figure 2 , Figure 3 and Figure 4As shown, the adapter support device 3 includes a base 14 and a column 13. The base 14 is a plate-shaped structure with rounded corners. A through-hole is formed in the center of the base 14, and grooves matching the fixing unit 2 are provided on opposite sides of the base. The column 13 is vertically fixed to the upper end face of the base 14, and the axis of the column is collinear with the axis of the central hole. A protrusion is fixed to the center of the end face of the column 13 away from the base, and the protrusion has a through hole; the protrusion is inserted into the column; the two through holes are symmetrically arranged along the axis of the central hole. Figure 5 and Figure 6 As shown, the part clamping device 4 includes a T-screw 7, one end of which is connected to a first nut 9. A spring washer 8 is provided between the first nut 9 and the T-screw 7. The rod of the T-screw 7 extends axially into the column 13, and the T-shaped end of the T-screw 7 is located inside the column 13. The maximum lateral length of the T-shaped end of the T-screw 7 is not greater than the lateral internal length of the internal cavity of the column, and the thickness of the T-shaped end of the T-screw 7 along the axial direction of the rod is not greater than the depth of the internal cavity. The internal cavity of the column is a groove-shaped structure corresponding to the shape of the T-shaped end of the T-screw 7. Figure 7 The fixing unit 2 includes a threaded rod 11, with a second nut 10 connected to each end of the threaded rod 11, and a washer 12 provided between each of the two second nuts 10 and the threaded rod 11.

[0019] The working principle of the small rotary part CNC machining device provided by this utility model is as follows: When using this device, firstly, fix the fixture base 1 on the working platform of the five-axis gantry CNC machine tool using bolts or pressure plates. Then, select the adapter support device 3, and insert the threaded end of the T-shaped screw 7 in the part clamping device 4 into the groove surface of the adapter support device. Use a rubber pad to seal the round hole of the adapter support device 3 to ensure that the T-shaped screw 7 in the clamping device 4 will not fall off. Then, place the adapter support device 3 on the fixture base 1, align the part according to the machining datum, and adjust the fixture posture. Use the fixture base and adapter support device connecting device 3 to fix the adapter support device 3 to the fixture base 1. Then, load the workpiece 6 to be machined, insert the positioning pin 5 at the appropriate position, and use the spring washer 8 and the first nut 9 in the clamping device 4 to fix the workpiece 6 to be machined. After the above operations, the CNC machining origin can be established and subsequent machining can be performed on the gantry CNC machine.

[0020] Example 1 This embodiment provides the working principle of a CNC machining device for small rotating parts, such as... Figure 1 As shown, it includes a tooling base 1, and a transfer support device 3 is connected to the top of the tooling base 1 through a fixing unit 2. A part clamping device 4 and a positioning pin 5 are connected to the top of the transfer support device 3.

[0021] Example 2 This embodiment provides the working principle of a CNC machining device for small rotating parts, such as... Figure 1-4 As shown, the fixture includes a tooling base 1. A connecting support device 3 is connected to the top of the tooling base 1 via a fixing unit 2. A part clamping device 4 and a positioning pin 5 are connected to the top of the connecting support device 3. The connecting support device 3 includes a base 14 and a column 13. The base 14 has a plate-like structure with rounded corners. A through-hole is provided in the center of the base 14, and grooves matching the fixing unit 2 are provided on opposite sides of the base. The column 13 is vertically fixed to the upper surface of the base 14, and the axis of the column is collinear with the axis of the central hole.

[0022] Example 3 This embodiment provides the working principle of a CNC machining device for small rotating parts as follows: Figure 1-4 As shown, the fixture includes a tooling base 1. A connecting support device 3 is connected to the top of the tooling base 1 via a fixing unit 2. A part clamping device 4 and a positioning pin 5 are connected to the top of the connecting support device 3. The connecting support device 3 includes a base 14 and a column 13. The base 14 is a plate-shaped structure with rounded corners. A through-hole is formed in the center of the base 14, and grooves matching the fixing unit 2 are provided on opposite sides of the base. The column 13 is vertically fixed to the upper end face of the base 14, and the axis of the column is collinear with the axis of the central hole. A protrusion is fixed to the center of the end face of the column 13 away from the base, and the protrusion has a through hole; the protrusion is partially inserted into the column.

[0023] Example 4 This embodiment provides the working principle of a CNC machining device for small rotating parts, such as... Figure 1-4 As shown, the fixture includes a tooling base 1. A connecting support device 3 is connected to the top of the tooling base 1 via a fixing unit 2. A part clamping device 4 and a positioning pin 5 are connected to the top of the connecting support device 3. The connecting support device 3 includes a base 14 and a column 13. The base 14 is a plate-shaped structure with rounded corners. A through-hole is formed in the center of the base 14, and grooves matching the fixing unit 2 are provided on opposite sides of the base. The column 13 is vertically fixed to the upper end face of the base 14, and the axis of the column is collinear with the axis of the central hole. A protrusion is fixed to the center of the end face of the column 13 away from the base, and the protrusion has a through hole; the protrusion is partially inserted into the column. The two through holes are symmetrically arranged along the axis of the central hole.

[0024] Example 5 This embodiment provides the working principle of a CNC machining device for small rotating parts, such as... Figure 1-6As shown, the fixture includes a tooling base 1. A connecting support device 3 is connected to the top of the tooling base 1 via a fixing unit 2. A part clamping device 4 and a positioning pin 5 are connected to the top of the connecting support device 3. The connecting support device 3 includes a base 14 and a column 13. The base 14 is a plate-shaped structure with rounded corners. A through-hole is formed in the center of the base 14, and grooves matching the fixing unit 2 are provided on opposite sides of the base. The column 13 is vertically fixed to the upper end face of the base 14, and the axis of the column is collinear with the axis of the central hole. A protrusion is fixed to the center of the end face of the column 13 away from the base, and the protrusion has a through hole; the protrusion is partially inserted into the column. The two through holes are symmetrically arranged along the axis of the central hole. The part clamping device 4 includes a T-screw 7. A first nut 9 is connected to one end of the T-screw 7, and a spring washer 8 is provided between the first nut 9 and the T-screw 7. The body of the T-screw 7 extends into the column 13 along the axial direction, and the T-shaped end of the T-screw 7 is located inside the column 13.

[0025] Example 6 This embodiment provides the working principle of a CNC machining device for small rotating parts, such as... Figure 1-6 As shown, the fixture includes a tooling base 1. A connecting support device 3 is connected to the top of the tooling base 1 via a fixing unit 2. A part clamping device 4 and a positioning pin 5 are connected to the top of the connecting support device 3. The connecting support device 3 includes a base 14 and a column 13. The base 14 is a plate-shaped structure with rounded corners. A through-hole is formed in the center of the base 14, and grooves matching the fixing unit 2 are provided on opposite sides of the base. The column 13 is vertically fixed to the upper end face of the base 14, and the axis of the column is collinear with the axis of the central hole. A protrusion is fixed to the center of the end face of the column 13 away from the base, and the protrusion has a through hole; the protrusion is partially inserted into the column. The two through holes are symmetrically arranged along the axis of the central hole. The part clamping device 4 includes a T-screw 7. A first nut 9 is connected to one end of the T-screw 7, and a spring washer 8 is provided between the first nut 9 and the T-screw 7. The T-screw 7 extends axially into the column 13, and the T-shaped end of the T-screw 7 is located inside the column 13. The maximum lateral length of the T-shaped end of the T-screw 7 is not greater than the lateral internal length of the internal cavity of the column, and the thickness of the T-shaped end of the T-screw 7 along the axis of the rod is not greater than the depth of the internal cavity.

[0026] Example 7 This embodiment provides the working principle of a CNC machining device for small rotating parts, such as... Figure 1-6As shown, the fixture includes a tooling base 1. A connecting support device 3 is connected to the top of the tooling base 1 via a fixing unit 2. A part clamping device 4 and a positioning pin 5 are connected to the top of the connecting support device 3. The connecting support device 3 includes a base 14 and a column 13. The base 14 is a plate-shaped structure with rounded corners. A through-hole is formed in the center of the base 14, and grooves matching the fixing unit 2 are provided on opposite sides of the base. The column 13 is vertically fixed to the upper end face of the base 14, and the axis of the column is collinear with the axis of the central hole. A protrusion is fixed to the center of the end face of the column 13 away from the base, and the protrusion has a through hole; the protrusion is partially inserted into the column. The two through holes are symmetrically arranged along the axis of the central hole. The part clamping device 4 includes a T-screw 7. A first nut 9 is connected to one end of the T-screw 7, and a spring washer 8 is provided between the first nut 9 and the T-screw 7. The T-screw 7 extends axially into the column 13, with its T-shaped end located inside the column 13. The maximum lateral length of the T-shaped end of the T-screw 7 is not greater than the lateral internal length of the column's internal cavity, and the thickness of the T-shaped end of the T-screw 7 along the axis of the rod is not greater than the depth of the internal cavity. The internal cavity of the column is a groove-shaped structure corresponding to the shape of the T-shaped end of the T-screw 7.

[0027] Example 8 This embodiment provides the working principle of a CNC machining device for small rotating parts, such as... Figure 1-8 As shown, the fixture includes a tooling base 1. A transfer support device 3 is connected to the top of the tooling base 1 via a fixing unit 2. A part clamping device 4 and a positioning pin 5 are connected to the top of the transfer support device 3. The workpiece to be processed is mounted on the transfer support device 3 via the clamping device 4. The transfer support device 3 includes a base 14 and a column 13. The base 14 is a plate-shaped structure with rounded corners. A through-hole is formed in the center of the base 14, and grooves matching the fixing unit 2 are provided on opposite sides of the base. The column 13 is vertically fixed to the upper end face of the base 14, and the axis of the column is collinear with the axis of the central hole. A protrusion is fixed to the center of the end face of the column 13 away from the base, and the protrusion has a through hole; the protrusion is partially inserted into the column. The two through holes are symmetrically arranged along the axis of the central hole. The part clamping device 4 includes a T-screw 7. A first nut 9 is connected to one end of the T-screw 7, and a spring washer 8 is provided between the first nut 9 and the T-screw 7. The T-screw 7 extends axially into the column 13, with its T-shaped end located inside the column 13. The maximum lateral length of the T-shaped end of the T-screw 7 is not greater than the lateral internal length of the column's internal cavity, and the thickness of the T-shaped end of the T-screw 7 along the axis of the rod is not greater than the depth of the internal cavity. The internal cavity of the column is a groove-shaped structure corresponding to the shape of the T-shaped end of the T-screw 7. The fixing unit 2 includes a threaded rod 11, with second nuts 10 connected to both ends of the threaded rod 11. Washers 12 are provided between each of the two second nuts 10 and the threaded rod 11.

Claims

1. A CNC machining device for small rotating parts, characterized in that, It includes a tooling base (1), the top of which is connected to a transfer support device (3) via a fixing unit (2), and the top of the transfer support device (3) is connected to a part clamping device (4) and a positioning pin (5).

2. The CNC machining device for small rotating parts according to claim 1, characterized in that, The adapter support device (3) includes a base (14) and a column (13). The base (14) is a plate-shaped structure with rounded corners. A through central hole is provided in the middle of the base (14), and grooves matching the fixing unit (2) are provided on the opposite sides of the base. The column (13) is vertically fixed to the upper end face of the base (14), and the axis of the column (13) is collinear with the axis of the central hole.

3. The CNC machining device for small rotating parts according to claim 2, characterized in that, A protrusion is fixed to the middle of the end face of the column (13) away from the base, and the protrusion has a through hole; the protrusion is partially inserted into the column.

4. The CNC machining device for small rotating parts according to claim 3, characterized in that, The two through holes are symmetrically arranged along the axis of the central hole.

5. The CNC machining device for small rotating parts according to claim 2, characterized in that, The part clamping device (4) includes a T-shaped screw (7), one end of which is connected to a first nut (9), and a spring washer (8) is provided between the first nut (9) and the T-shaped screw (7).

6. The CNC machining device for small rotating parts according to claim 5, characterized in that, The rod of the T-shaped screw (7) extends into the column (13) along the axial direction, and the T-shaped end of the T-shaped screw (7) is located inside the column (13).

7. The CNC machining device for small rotating parts according to claim 6, characterized in that, The maximum lateral length of the T-shaped end of the T-shaped screw (7) is not greater than the lateral internal length of the internal cavity of the column (13), the thickness of the T-shaped end of the T-shaped screw (7) along the axis of the rod body is not greater than the depth of the internal cavity, and the internal cavity of the column (13) is a groove-shaped structure corresponding to the shape of the T-shaped end of the T-shaped screw (7).

8. The CNC machining device for small rotating parts according to claim 1, characterized in that, The fixing unit (2) includes a threaded rod (11), and the two ends of the threaded rod (11) are respectively connected to a second nut (10). A washer (12) is provided between the two second nuts (10) and the threaded rod (11).

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