A shaft hole assembly spinning device and shaft hole assembly method

Abstract

This invention relates to a shaft hole assembly spinning device, belonging to the field of mechanical assembly technology, and solves the problem of alignment difficulties when drilling holes before assembly. The shaft hole assembly spinning device includes a positioning component, a rudder surface pressure plate, screws for reamed holes, guide posts, a shaft positioning clamping plate, a fixing frame, spinning screws, clamping screws, fixing frame mounting screws, and positioning pins. The positioning component contacts the rudder surface pressure plate, and the positions of the positioning component and the rudder surface pressure plate are fixed by the screws and nuts for reamed holes. Guide posts are installed on both sides of the upper end of the positioning component. During assembly, the attitudes of the first and second rudder shaft locking holes are finely adjusted and calibrated using cylindrical pins. The rudder shaft body enters the rudder shaft mounting hole in a straight downward pressing manner, thus ensuring the alignment of the second rudder shaft locking hole of the rudder shaft body and the first rudder shaft locking hole of the rudder surface body during assembly.

Description

Technical Field

[0001] This invention relates to the field of mechanical assembly technology, and in particular to a shaft hole assembly spinning device and shaft hole assembly method. Background Technology

[0002] In mechanical installation, many parts require tight fits to prevent disconnection or to transmit large torques, hence the development of interference fit technology. An interference fit utilizes the elasticity of the material to enlarge and deform a hole, allowing it to fit over a shaft. When the hole returns to its original shape, it generates a clamping force on the shaft, connecting the two parts. In interference fit tolerance zone diagrams, the tolerance zone of the hole is below that of the shaft.

[0003] The assembly of a bore-shaft interference fit has always been one of the more difficult assembly structures. Interference fits are generally used for positioning and providing a certain structural strength, and are typically not disassembled. A common assembly structure involves drilling a locking pin hole radially on the bore-shaft in addition to the interference fit, and then installing the locking pin to ensure the shaft cannot come out of the bore. Traditionally, this assembly process involves first installing the bore-shaft and then drilling the locking pin hole. However, for bore-shafts with pre-machined locking pin holes, aligning the locking pin holes is difficult if the bore-shaft is installed first, and adjustment is also difficult due to the interference fit. Furthermore, drilling the locking pin hole first allows for machine tool drilling, reducing labor intensity. Therefore, it is necessary to solve the problem of alignment difficulties when drilling the locking pin hole first and then assembling. Summary of the Invention

[0004] Based on the above analysis, the present invention aims to provide a shaft hole assembly spinning device to solve the problem of alignment difficulties when drilling locking pin holes before assembly as mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A shaft hole assembly spinning device includes a positioning and placement component, a rudder face pressure plate, screws for reamed holes, a guide post, a shaft positioning clamping plate, a fixing frame, spinning screws, clamping screws, fixing frame mounting screws, and positioning pins.

[0007] Furthermore, the positioning and placement component contacts the rudder surface pressure plate, and the relative position between the positioning and placement component and the rudder surface pressure plate is fixed by the screw and nut of the reamed hole. Guide posts are installed on both sides of the upper end of the positioning and placement component, and an axial positioning clamping plate that can slide along the column direction of the guide posts is installed between the guide posts. The fixed frame is installed on the upper end of the positioning and placement component by the fixed frame mounting nail, and the turning nail is threaded to the middle of the fixed frame.

[0008] Furthermore, the positioning and placement component and the rudder surface pressure plate are used to clamp the rudder surface body, and the contact surface of the positioning and placement component and the rudder surface pressure plate has the same shape as the rudder surface body.

[0009] Furthermore, the shaft positioning clamping plate includes a positioning clamping plate body, a pressing positioning groove, a rudder shaft clamping circular groove, an L-shaped rudder shaft clamping groove, an avoidance through hole, and a sliding through groove.

[0010] Furthermore, the upper part of the positioning clamping plate body is provided with a downward positioning groove, and the lower part of the positioning clamping plate body is provided with a rudder shaft clamping circular groove. The body of the positioning clamping plate body is provided with an L-shaped rudder shaft clamping groove that passes through the rudder shaft clamping circular groove.

[0011] Furthermore, the clamping pin is threadedly connected to the positioning clamping plate body, and the clamping pin can adjust the gap width of the L-shaped rudder shaft clamping groove when it rotates.

[0012] Furthermore, the bottom of the positioning and placement component is provided with a positioning guide groove and a limiting base plate.

[0013] Furthermore, the upper end of the positioning and placement component has a convex block, the convex block has two rudder shaft alignment holes, and the upper part of the positioning and placement component has two rudder face alignment holes.

[0014] Furthermore, the positioning clamping plate body is provided with an avoidance through hole, which is provided to prevent the positioning clamping plate body from contacting the convex block.

[0015] Furthermore, the rudder shaft alignment hole and the rudder surface alignment hole are located on the same straight line.

[0016] Furthermore, the rudder surface body includes a rudder shaft mounting hole and a first rudder shaft locking hole.

[0017] Furthermore, the rudder shaft body includes a second rudder shaft locking hole.

[0018] A shaft hole assembly method, comprising assembling the rudder surface body and the rudder shaft body using the aforementioned shaft hole assembly spinning device, including:

[0019] Step 1: Install the rudder surface body and rudder shaft body.

[0020] Step 1.1, Install the rudder body: Place the rudder body on the positioning and placement component, align the bottom end of the rudder body with the limiting base plate, and fit the lower two sides of the rudder body with the positioning guide groove. Use cylindrical pins to pass through the first rudder shaft locking hole and the rudder alignment hole to fine-tune and calibrate the position of the rudder body, ensuring the angle and position of the first rudder shaft locking hole on the rudder body. Cover with the rudder pressure plate, and use screws and nuts with the reamed holes to fix the rudder body between the rudder pressure plate and the positioning and placement component, thus completing the installation of the rudder body.

[0021] Step 1.2, Install the rudder shaft body: Place the upper end of the rudder shaft body into the rudder shaft clamping groove, rotate the rudder shaft body to align the second rudder shaft locking hole with the rudder shaft alignment hole, and then use a cylindrical pin to pass through the second rudder shaft locking hole and the rudder shaft alignment hole to fine-tune and calibrate the position of the rudder shaft body, ensuring the angle and position of the second rudder shaft locking hole on the rudder shaft body. Adjust the clamping pins so that the groove wall of the rudder shaft clamping groove clamps the rudder shaft body, completing the installation of the rudder shaft body.

[0022] Step 2: Press the rudder shaft body to the assembly position: Rotate the spinning screw, and the spinning screw descends under the action of the thread. The spinning screw abuts against the positioning clamping plate and descends along the guide post, driving the rudder shaft body to descend until the shoulder of the rudder shaft body abuts against the rudder surface body. At this time, the rudder shaft body reaches the assembly position.

[0023] Step 3: Install the locating pins.

[0024] The above technical solution has at least one of the following beneficial effects:

[0025] The shaft-hole assembly spinning device of the present invention adds a radial rudder shaft locking hole while the rudder shaft body and the rudder surface body are in an interference fit. The rudder shaft locking hole and the positioning pin are also in an interference fit. When facing a double interference fit, this device completes the assembly of the shaft body and the rudder surface body by adjusting the posture of the rudder shaft body and pressing it down. The assembly by this device can reduce the workload of manual assembly and avoid the problem of rotation when the rudder shaft body is manually assembled into the rudder shaft mounting hole, thus improving the efficiency of batch assembly of products. In this structure, the posture of the first rudder shaft locking hole and the second rudder shaft locking hole are finely adjusted and calibrated by the cylindrical pin during assembly. The rudder shaft body enters the rudder shaft mounting hole in a straight downward pressing manner, thus ensuring the alignment of the second rudder shaft locking hole of the rudder shaft body and the first rudder shaft locking hole of the rudder surface body during assembly.

[0026] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0027] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0028] Figure 1 This is a front view structural diagram of a shaft hole assembly spinning device according to the present invention.

[0029] Figure 2 This is a three-dimensional structural schematic diagram of a shaft hole assembly spinning device according to the present invention.

[0030] Figure 3 This is a schematic diagram of the structure of a nut for a reamed hole in a shaft hole assembly spinning device according to the present invention.

[0031] Figure 4 This is a front view of the positioning and placement component of the shaft hole assembly spinning device of the present invention.

[0032] Figure 5 This is a schematic diagram of the back of the positioning and placement component of the shaft hole assembly spinning device of the present invention.

[0033] Figure 6 This is a schematic diagram of the rudder surface body of a shaft hole assembly spinning device according to the present invention.

[0034] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0035] Figure 8 This is a schematic diagram of the rudder shaft body of a shaft hole assembly spinning device according to the present invention.

[0036] Figure 9 This is a schematic diagram of the shaft positioning clamping plate and clamping pins of a shaft hole assembly spinning device according to the present invention.

[0037] Figure 10 This is a schematic diagram of the shaft positioning clamping plate of a shaft hole assembly spinning device according to the present invention.

[0038] Figure 11 This is a schematic diagram of the structure of the avoidance through hole of the shaft hole assembly spinning device of the present invention.

[0039] Figure 12 This is a flowchart of a shaft hole assembly method.

[0040] Figure label:

[0041] 1. Positioning and placement components; 2. Rudder surface body; 3. Rudder surface pressure plate; 4. Screws for reamed holes; 5. Guide post; 6. Shaft positioning clamping plate; 7. Fixing frame; 8. Rudder shaft body; 9. Spinning screw; 10. Clamping screw; 11. Fixing frame mounting screw; 12. Positioning pin; 13. Nuts for reamed holes;

[0042] 101. Positioning guide groove; 102. Limiting base plate; 103. Convex block; 104. Rudder shaft alignment hole; 105. Rudder surface alignment hole;

[0043] 201. Rudder shaft mounting hole; 202. First rudder shaft locking hole;

[0044] 601. Positioning clamping plate body; 602. Pressing positioning groove; 603. Rudder shaft clamping circular groove; 604. L-shaped rudder shaft clamping groove; 605. Sliding through groove; 606. Clearance through hole;

[0045] 801. Second rudder shaft locking hole. Detailed Implementation

[0046] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0047] Example 1

[0048] A specific embodiment of the present invention discloses a shaft hole assembly spinning device, such as... Figure 1 , Figure 2 and Figure 3 As shown, it includes a positioning and placement component 1, a rudder surface pressure plate 3, a screw for the reamed hole 4, a guide post 5, a shaft positioning clamping plate 6, a fixing frame 7, a spinning screw 9, a clamping screw 10, a fixing frame mounting screw 11, and a positioning pin 12.

[0049] The positioning and placement components 1, rudder surface pressure plate 3, screw 4 for reaming holes, nut 13 for reaming holes, and rudder surface alignment hole 105 are used to determine the position and attitude of the rudder surface body 2.

[0050] The guide post 5, the shaft positioning clamping plate 6, and the rudder shaft alignment hole 104 are used to determine the position and attitude of the rudder shaft body 8.

[0051] The fixing frame 7, the fixing frame mounting pin 11, and the spinning pin 9 are used to press the rudder shaft body 8 into the rudder shaft mounting hole 201.

[0052] Preferably, the positioning and placement component 1 contacts the rudder surface pressure plate 3, and the relative position between the positioning and placement component 1 and the rudder surface pressure plate 3 is fixed by the hinge hole screw 4 and the hinge hole nut 13. Guide posts 5 are installed on both sides of the upper end of the positioning and placement component 1, and an axial positioning clamping plate 6 that can slide along the column direction of the guide posts 5 is installed between the guide posts 5. The upper end of the positioning and placement component 1 is equipped with the fixing frame 7 by the fixing frame mounting nail 11, and the center of the fixing frame 7 is threadedly connected to the turning nail 9.

[0053] The front and rear sides of the rudder body 2 are respectively attached to the positioning and placement component 1 and the rudder pressure plate 3. The lower part of the rudder body is positioned by the positioning guide groove 101 and the limiting base plate 102. The cylindrical pin is used to make the final attitude adjustment of the rudder body 2 through the rudder alignment hole 105 and the first rudder shaft locking hole 202. The positioning and placement component 1 and the rudder pressure plate 3 are pressed together by the hinge hole screw 4 and the hinge hole nut 13.

[0054] Preferably, the positioning and placement component 1 and the rudder surface pressure plate 3 are used to clamp the rudder surface body 2, and the contact surface of the positioning and placement component 1 and the rudder surface pressure plate 3 has the same shape as the rudder surface body 2.

[0055] Preferred, such as Figure 9 , Figure 10 and Figure 11 As shown, the shaft positioning clamping plate 6 includes a positioning clamping plate body 601, a pressing positioning groove 602, a rudder shaft clamping circular groove 603, an L-shaped rudder shaft clamping groove 604, an avoidance through hole 606, and a sliding through groove 605.

[0056] Preferably, the upper part of the positioning clamping plate body 601 is provided with a pressing positioning groove 602, and the lower part of the positioning clamping plate body 601 is provided with a rudder shaft clamping circular groove 603. An L-shaped rudder shaft clamping groove 604 passing through the rudder shaft clamping circular groove 603 is provided inside the positioning clamping plate body 601.

[0057] Preferably, the clamping pin 10 is threadedly connected to the positioning clamping plate body 601, and the clamping pin 10 can adjust the gap width of the L-shaped rudder shaft clamping groove 604 when it rotates.

[0058] The L-shaped long side groove of the L-shaped rudder shaft clamping groove is provided with an adjustment through hole and an adjustment thread hole on both sides. The clamping pin 10 passes through the adjustment through hole and is connected to the adjustment thread hole by thread.

[0059] The gap width of the L-shaped rudder shaft clamping groove 604 can be adjusted by rotating the clamping pin 10, so that the rudder shaft clamping groove 603 can hold the rudder shaft body 8. The cylindrical pin is then passed through the rudder shaft alignment hole 104 and the second rudder shaft locking hole 801 to determine the attitude of the rudder shaft body 8.

[0060] Insert the Φ10g6 shaft at the tail end of the rudder shaft body 8 into the Φ10H7, 10mm deep circular groove of the rudder shaft clamping groove 603. Rotate the rudder shaft body 8 until the second rudder shaft locking hole 801 is substantially aligned with the rudder shaft alignment hole 104 of the positioning and placement component 1. Use a cylindrical pin of Φ3h6×25 (GB / T119.1) for calibration. Then rotate the clamping pin 10, and the rudder shaft clamping groove 603 clamps the rudder shaft body 8, completing the positioning and clamping of the rudder shaft body 8.

[0061] Preferred, such as Figure 4 As shown, the bottom of the positioning and placement component 1 is provided with a positioning guide groove 101 and a limiting base plate 102.

[0062] Preferred, such as Figure 5As shown, the upper end of the positioning and placement component 1 has a convex block 103, the convex block 103 has two rudder shaft alignment holes 104, and the upper part of the positioning and placement component 1 has two rudder surface alignment holes 105.

[0063] Preferably, the positioning clamping plate body 601 is provided with an avoidance through hole 606, which is used to prevent the positioning clamping plate body 601 from contacting the convex block 103.

[0064] Preferably, the rudder shaft alignment hole 104 and the rudder surface alignment hole 105 are located on the same straight line.

[0065] The rudder shaft alignment hole 104 and the rudder surface alignment hole 105 are machined simultaneously during production to ensure central symmetry, requiring a symmetry degree of 0.02, and to maximize the guarantee that the rudder shaft alignment hole 104 and the rudder surface alignment hole 105 are on the same straight line.

[0066] Preferred, such as Figure 6 and Figure 7 As shown, the rudder surface body 2 includes a rudder shaft mounting hole 201 and a first rudder shaft locking hole 202.

[0067] The rudder shaft mounting hole 201 and the rudder shaft body 8 are interference fit Φ8H7 / p6.

[0068] Preferred, such as Figure 8 As shown, the rudder shaft body 8 includes a second rudder shaft locking hole 801.

[0069] The locating pin 12 has an interference fit of Φ3H7 / r6 with the first rudder shaft locking hole 202 and the second rudder shaft locking hole 801.

[0070] Example 2

[0071] A shaft hole assembly method uses the shaft hole assembly spinning device of Embodiment 1 to assemble the rudder surface body 2 and the rudder shaft body 8, such as... Figure 12 As shown, it includes:

[0072] Step 1: Install the rudder surface body 2 and the rudder shaft body 8.

[0073] Step 1.1, Install the rudder body 2: Place the rudder body 2 on the positioning component 1, align the bottom end of the rudder body 2 with the limiting base plate 102, and fit the lower two sides of the rudder body 2 with the positioning guide groove 101. Use a cylindrical pin of GB / T119.1 Φ3h6×25 to pass through the first rudder shaft locking hole 202 and the rudder alignment hole 105 to fine-tune and calibrate the position of the rudder body 2, ensuring the angle and position of the first rudder shaft locking hole 202 on the rudder body 2. Cover with the rudder pressure plate 3, and use the screw 4 for the reamed hole and the nut 13 for the reamed hole to fix the rudder body 2 between the rudder pressure plate 3 and the positioning component 1, thus completing the installation of the rudder body 2.

[0074] Step 1.2, Install the rudder shaft body 8: Place the upper end of the rudder shaft body 8 into the rudder shaft clamping groove 603, rotate the rudder shaft body 8 to align the second rudder shaft locking hole 801 with the rudder shaft alignment hole 104, and then use a cylindrical pin of GB / T119.1 Φ3h6×25 to pass through the second rudder shaft locking hole 801 and the rudder shaft alignment hole 104 to fine-tune and calibrate the position of the rudder shaft body 8, ensuring the angle and position of the second rudder shaft locking hole 801 on the rudder shaft body 8, adjust the clamping pin 10 so that the groove wall of the rudder shaft clamping groove 603 clamps the rudder shaft body 8, and complete the installation of the rudder shaft body 8.

[0075] Step 2: Press the rudder shaft body 8 to the assembly position: Rotate the spinning screw 9, the spinning screw 9 descends under the action of the thread, the spinning screw 9 abuts against the positioning clamping plate and descends along the guide post 5, driving the rudder shaft body 8 to descend until the shoulder of the rudder shaft body 8 abuts against the rudder surface body 2, at which point the rudder shaft body 8 reaches the assembly position.

[0076] Step 3: Install positioning pin 12.

[0077] In this embodiment, the shaft hole assembly spinning device adds a radial rudder shaft locking hole while the rudder shaft body 8 and the rudder surface body 2 are in an interference fit. The rudder shaft locking hole and the positioning pin 12 are also in an interference fit. When facing a double interference fit, this device adjusts the posture of the rudder shaft body 8 and presses it down to complete the assembly of the shaft body and the rudder surface body 2. The assembly by this device can reduce the workload of manual assembly and avoid the problem of rotation when the rudder shaft body 8 enters the rudder shaft mounting hole 201 during manual assembly, thus improving the efficiency of batch assembly of products. During the assembly, the posture of the first rudder shaft locking hole 202 and the second rudder shaft locking hole 801 is finely adjusted and calibrated by the cylindrical pin. The rudder shaft body 8 enters the rudder shaft mounting hole 201 by pressing down in a straight line. Therefore, it can ensure the alignment of the second rudder shaft locking hole 801 of the rudder shaft body 8 and the first rudder shaft locking hole 202 of the rudder surface body 2 during assembly.

[0078] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A shaft hole assembly spinning device, characterized in that, It includes a positioning and placement component (1), a rudder surface pressure plate (3), a screw for the reamed hole (4), a guide post (5), a shaft positioning clamping plate (6), a fixing frame (7), a spinning screw (9), a clamping screw (10), a fixing frame mounting screw (11), a positioning pin (12), and a nut for the reamed hole (13). The positioning component (1) contacts the rudder pressure plate (3). The relative position between the positioning component (1) and the rudder pressure plate (3) is fixed by the hinge hole screw (4) and the hinge hole nut (13). Guide posts (5) are installed on both sides of the upper end of the positioning component (1). A shaft positioning clamping plate (6) that can slide along the column direction of the guide posts (5) is installed between the guide posts (5). The upper end of the positioning component (1) is equipped with the fixing frame (7) by the fixing frame mounting nail (11). The middle part of the fixing frame (7) is threaded with the spinning nail (9). The shaft positioning clamping plate (6) includes a positioning clamping plate body (601), a pressing positioning groove (602), a rudder shaft clamping circular groove (603), an L-shaped rudder shaft clamping groove (604), a clearance through hole (606), and a sliding through groove (605); the upper part of the positioning clamping plate body (601) is provided with a pressing positioning groove (602), and the lower part of the positioning clamping plate body (601) is provided with a rudder shaft clamping circular groove (603); the positioning clamping plate body (601) is provided with an L-shaped rudder shaft clamping groove (604) that passes through the rudder shaft clamping circular groove (603). The positioning and placement component (1) has a convex block (103) at its upper end, and two rudder shaft alignment holes (104) are provided in the convex block (103). The positioning and placement component (1) has two rudder surface alignment holes (105) at its upper part.

2. The shaft hole assembly spinning device according to claim 1, characterized in that, The positioning and placement component (1) and the rudder pressure plate (3) are used to clamp the rudder body (2). The contact surfaces of the positioning and placement component (1) and the rudder pressure plate (3) with the rudder body (2) have the same surface shape as the rudder body (2).

3. The shaft hole assembly spinning device according to claim 1, characterized in that, The clamping pin (10) is threadedly connected to the positioning clamping plate body (601), and the clamping pin (10) can adjust the gap width of the L-shaped rudder shaft clamping groove (604) when it rotates.

4. The shaft hole assembly spinning device according to claim 1, characterized in that, The bottom of the positioning and placement component (1) is provided with a positioning guide groove (101) and a limiting base plate (102).

5. The shaft hole assembly spinning device according to claim 1, characterized in that, The positioning clamping plate body (601) is provided with a clearance through hole (606), which is used to prevent the positioning clamping plate body (601) from contacting the convex block (103).

6. A method for assembling a shaft hole, characterized in that, The rudder surface body (2) and the rudder shaft body (8) are assembled using the shaft hole assembly spinning device described in any one of claims 2-5.

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