Floating center device and using method

Abstract

The invention relates to the technical field of production and machining, and particularly discloses a floating center device and a using method, the floating center device is installed on a machine tool tailstock, and the floating center device comprises a center body, a center head and a ball head rod. The center body serves as a mounting base body and is connected with the center head, and an end chamfer of the center head makes contact with a spherical line of a to-be-machined product. The ball head rod is arranged in the center body and can adapt to different directions, and the gap between the ball head rod and the center head is controlled to be smaller than or equal to 1 degree. The center body and a machine tool tailstock are installed in a matched mode, and an autorotation Morse tailstock can be selected. The center body is provided with a conical section and a cylindrical section, and the cylindrical section is provided with a spherical groove for installing the ball head rod. The pressing plate assists in fixing the ball head rod, so that the ball head rod floats slightly, and lubricating liquid is filled between contact surfaces. The using method comprises the steps that the device is installed on a machine tool tailstock, adjusted and moved downwards to the center head to make contact with a to-be-machined product, tight attachment is achieved through self-adaptive adjustment of the ball head rod, and therefore the product is pressed and positioned, and follow-up machining is facilitated. According to the device and the using method, the machining precision and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of machining equipment, in particular to a floating center device, and also to a method for using the floating center device. Background Art

[0002] In the modern machinery manufacturing industry, the end face outer star wheel structure, as an innovative lightweight design, is gradually becoming the focus of the industry due to its excellent transmission performance, flexible structural installation characteristics and efficient use of raw materials. However, the complexity and precision of this structure also pose unprecedented challenges to the processing technology, especially in ensuring the key indicator of product concentricity, traditional processing technology and equipment seem to be unable to cope with it.

[0003] Traditional top devices, limited by their fixed or limited adjustment design, are not adequate for the complex and changeable shapes of the spherical inner cavity of the end face outer star wheel structure product. These devices often cannot accurately adapt to the surface changes of the product's inner cavity, resulting in unstable contact between the top and the spherical inner cavity of the product during processing, and greatly reduced positioning accuracy. This problem of poor contact and inaccurate positioning not only directly affects the processing accuracy, but also greatly reduces the product yield, increases production costs and quality control difficulties.

[0004] With the increasing application of end face outer planetary wheel structures, the requirements for their processing accuracy are also increasing. Traditional top devices can no longer meet the high-precision and high-efficiency processing requirements, which has become a major bottleneck restricting the widespread application of end face outer planetary wheel structures. Therefore, in response to the special processing requirements of end face outer planetary wheel structure products, it is urgent to develop a new, dedicated top device that can adapt to the spherical positioning structure for processing. Summary of the invention

[0005] The purpose of the present invention is to provide a floating center device, the center of which has a universal adjustment function and can adapt to spherical cavities in different directions and angles according to different processing requirements, ensuring a close fit between the center and the spherical cavity of the product, thereby improving processing accuracy and yield.

[0006] In order to solve the above technical problems, the present invention provides a floating center device installed on the tailstock of a machine tool, comprising:

[0007] The top body, as a mounting base, is used to mount the top head;

[0008] A top head is connected to the top body, and the end chamfer of the top head is in line contact with the spherical surface of the product to be processed;

[0009] The ball head rod is built into the top body, one end of which is connected to the top body and the other end is connected to the top head. It can adapt to different directions for universal adjustment, so that the gap between the ball head rod and the top head is controlled to float within the range of ≤1°.

[0010] In addition to the above technical features, this application also makes improvements in the following aspects:

[0011] In some embodiments, the center body is matched and installed with the tailstock of a machine tool, and the tailstock of the machine tool is a self-rotating Morse tailstock.

[0012] In some embodiments, the tip body includes a conical section and a cylindrical section; the outer diameter of the cylindrical section of the tip body is larger than the outer diameter of the conical section; one end of the conical section of the tip body adopts a Morse taper structure, and one end of the cylindrical section is provided with a spherical groove.

[0013] In some embodiments, the ball head rod includes a ball head connecting portion and a columnar connecting portion; the shape of the ball head connecting portion is adapted to the shape of the spherical groove at one end of the cylindrical section of the top body, and is installed in the spherical groove.

[0014] In some embodiments, a pressure plate is provided between the top body and the top head. The pressure plate is fixed to one end of the cylindrical section of the top body by bolts to assist in fixing the ball head rod so that the ball head rod floats slightly in the spherical groove of the top body.

[0015] In some embodiments, a gap is provided between the contact surfaces of the tip body and the ball head connecting portion of the ball head rod, and the gap is filled with lubricating liquid.

[0016] In some embodiments, the floating center device is further provided with a connecting assembly, which includes a disassembly nut, a hexagon socket bolt, a stop bolt and an internally threaded round pin.

[0017] In some embodiments, the disassembly nut is threadedly connected to the center body and is used to connect the center body to the tailstock of the machine tool; the hexagon socket bolt, stop bolt and internal threaded round pin cooperate with each other to connect the center body to the center head and the ball head rod, so that the center body, the center head and the ball head rod are combined into an integrated structure.

[0018] Another object of the present invention is to provide a method for using a floating top device, which uses the floating top device and includes the following steps:

[0019] a) Install the floating center device on the tailstock of the machine tool, making sure that the center body matches and is fixed to the tailstock of the machine tool;

[0020] b) Start the machine tool, adjust the tailstock of the machine tool, and drive the center body to move downward in the set direction;

[0021] c) When the top tip contacts the spherical inner cavity of the product to be processed, continue to apply pressure through the tailstock of the machine tool;

[0022] d) Under the downward pressure of the machine tool tailstock, the ball head rod performs an adaptive angle adjustment so that the top head fits closely to the spherical inner cavity of the product to be processed;

[0023] e) The product to be processed is pressed and positioned by the close fit between the top head and the spherical inner cavity of the product to be processed, so as to facilitate subsequent processing operations.

[0024] In step d, the gap between the ball head rod and the top head is controlled to float within a range of ≤1° through the adaptive adjustment of the angle of the ball head rod, thereby ensuring a close fit between the top head and the inner cavity of the spherical surface of the product to be processed.

[0025] By adopting the above technical solution, the present invention has at least one of the following beneficial effects:

[0026] 1. Significantly improve processing accuracy and product yield:

[0027] The chamfered end of the tip achieves line contact with the spherical surface of the product to be processed, greatly improving the accuracy of positioning and ensuring the stability of the processing process. This design significantly reduces the runout of the product outer circle and the end face tooth reference, thereby improving the overall yield of the product.

[0028] The built-in ball head rod design of the device enables it to adapt to the swing position of the product at different angles and realize universal adjustment. Even in the case of complex curved surfaces or slight deviations, it can ensure high-precision positioning and clamping, further improving the processing accuracy.

[0029] 2. Enhance processing flexibility and adaptability:

[0030] The realization of the self-adaptive rotation angle function enables the top head to automatically adjust its angle as the machine tool rotates. This tiny floating range enables the device to adapt to slight changes in the surface of the product to be processed, greatly improving the flexibility and adaptability of processing.

[0031] The device's universal adjustment capability enables it to adapt to a variety of products of different shapes and sizes to be processed without the need for frequent replacement or adjustment, significantly improving processing flexibility and efficiency and reducing production costs.

[0032] 3. Extend the service life of the device and improve user experience:

[0033] The lubricating oil filled in the contact position between the top body and the ball head rod effectively reduces the friction and wear during the processing, thereby extending the service life of the device.

[0034] By reducing friction, the heat and noise generated by friction are also significantly reduced, improving overall work efficiency and user experience, making the processing environment more comfortable.

[0035] 4. High stability brought by structural optimization:

[0036] The conical and cylindrical section designs adopted by the top body not only facilitate the matching installation with the tailstock of the machine tool, but also greatly improve the stability of the overall structure, ensuring the stability and safety during the processing.

[0037] The design of the pressure plate further assists in fixing the ball head rod, allowing it to float slightly in the spherical groove without falling off or shaking, thereby enhancing the stability of the device and reducing processing errors caused by shaking.

[0038] 5. Easy to install, disassemble and maintain:

[0039] The design of the connecting components makes the installation and removal of the floating top device simple and quick, greatly improving work efficiency and reducing the time cost during installation and removal.

[0040] The coordinated use of connectors such as disassembly nuts and hexagon socket bolts ensures that the various components of the device can be firmly combined into an integrated structure. It also facilitates quick disassembly and maintenance when necessary, reducing maintenance costs.

[0041] To sum up, the floating center device of the present invention has significant advantages in processing the end face outer star wheel structure. It not only improves the processing accuracy and product yield, but also extends the service life of the device and improves the processing flexibility and versatility, which makes the floating center device of the present invention have broad application prospects and market value in related fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0043] Figure 1 It is a schematic diagram of the overall structure of a floating top device of the present invention;

[0044] Figure 2 This is a front view of a floating top device of the present invention;

[0045] Figure 3 A side view of a floating top device of the present invention;

[0046] Figure 4 for Figure 2 AA section view;

[0047] Figure 5for Figure 3 BB section view;

[0048] The numbers in the figure are as follows:

[0049] 1. Center body; 1a. Conical section; 1b. Columnar section; 1c. Spherical groove; 2. Center head; 3. Ball head rod; 3a. Ball head connection part; 3b. Columnar connection part; 4. Pressure plate; 5. Connection assembly; 5a. Disassembly nut; 5b. Hexagon socket bolt; 5c. Stop bolt; 5d. Internal thread round pin. DETAILED DESCRIPTION

[0050] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is by no means intended to limit the present invention and its application or use. The present invention can be implemented in other different forms and is not limited to the embodiments described herein.

[0051] It should be noted that those skilled in the art explicitly and implicitly understand that the embodiments described in the present invention can be combined with other embodiments without conflict. Unless otherwise defined, the technical terms or scientific terms involved in the present invention should have the common meanings understood by people with ordinary skills in the technical field to which the present invention belongs.

[0052] The words "a", "an", "a", "the" and the like involved in the present invention do not indicate quantity limitation and may indicate singular or plural. The terms "include", "comprises", "has" and any variations thereof involved in the present invention are intended to cover non-exclusive inclusions; the terms "first", "second", "third" and the like involved in the present invention are merely used to distinguish similar objects and do not represent a specific ordering of the objects.

[0053] This embodiment poses a severe challenge to the processing technology due to the complex and changeable spherical inner cavity shape. Traditional top devices are unable to cope with this structure due to their fixed or limited adjustment design. Specifically, these devices are often unable to accurately adapt to the surface changes of the product's inner cavity during the processing process, resulting in unstable contact between the top and the inner cavity and greatly reduced positioning accuracy. This inaccurate positioning problem directly affects the processing accuracy, causing a significant drop in product yield, while increasing production costs and quality control difficulties. Traditional top devices are inefficient when processing complex shapes and cannot meet the high-efficiency processing requirements of the end face outer star wheel structure.

[0054] Based on the above problems, the present invention proposes a floating center device, which is installed on the tailstock of a machine tool and is mainly used to press and position the product to be processed.

[0055] Specifically, the floating center device includes a center body 1 , a center head 2 and a ball head rod 3 .

[0056] The top body 1 is used as a mounting base for mounting the top head 2. The top body 1 includes a conical section 1a and a cylindrical section 1b. One end of the conical section 1a adopts a Morse taper structure so as to match the machine tool tailstock and ensure the stability of the installation. Among them, the outer diameter of the cylindrical section 1b is larger than the outer diameter of the conical section 1a, and a spherical groove 1c is provided at one end of the cylindrical section 1b for mounting the ball head rod 3.

[0057] The top head 2 is connected to the top body 1, and the chamfered end of the top head 2 is in line contact with the spherical surface of the product to be processed to ensure a close fit and precise positioning.

[0058] The ball head rod 3 is built into the top body 1, one end of which is connected to the spherical groove 1c of the top body 1, and the other end is connected to the top head 2.

[0059] The ball head rod 3 comprises a ball head connecting portion 3a and a columnar connecting portion 3b. The shape of the ball head connecting portion 3a matches the shape of the spherical groove 1c at one end of the columnar section 1b of the tip body 1 and is installed in the spherical groove 1c.

[0060] The ball head rod 3 can be universally adjusted in different directions to control the gap between the ball head rod 3 and the top head 2 to float within a range of ≤1°, thereby ensuring that the top head 2 can fit closely into the spherical inner cavity of the product to be processed.

[0061] Furthermore, in order to assist in fixing the ball head rod 3 and allow it to float slightly in the spherical groove 1c, the present invention provides a pressure plate 4 between the top body 1 and the top head 2. The pressure plate 4 is fixed to one end of the cylindrical section 1b of the top body 1 by bolts to assist in fixing the ball head rod 3.

[0062] At the same time, a gap is provided between the contact surfaces of the tip body 1 and the ball head connecting portion 3a of the ball head rod 3, and the gap is filled with lubricating liquid (such as lubricating oil) to reduce friction and promote flexible adjustment of the ball head rod 3.

[0063] In addition, the present invention further provides a connecting assembly 5 for connecting the top body 1, the top head 2 and the ball head rod 3.

[0064] The connecting assembly 5 includes a disassembly nut 5a, a hexagon socket bolt 5b, a stop bolt 5c and an internally threaded round pin 5d.

[0065] The disassembly nut 5a is threadedly connected to the center body 1 and is used to connect the center body 1 to the tailstock of the machine tool.

[0066] The hexagon socket bolt 5b, the stop bolt 5c and the internal threaded round pin 5d cooperate with each other to tightly connect the top body 1, the top head 2 and the ball head rod 3 into an integrated structure, ensuring the stability and reliability of the entire floating top device.

[0067] Combined with the above description of the floating top device structure, in order to more clearly illustrate the technical solution of the present application, the specific working principle of the floating top device is described as follows:

[0068] Firstly, the device is installed in a matching manner with the tailstock of a machine tool by adopting a Morse taper structure through the tapered section 1a of the center body 1, thereby ensuring the stability of the entire device on the machine tool.

[0069] The cylindrical section 1b of the top body 1 is used to install the ball head rod 3, and its spherical groove 1c is adapted to the ball head connecting part 3a of the ball head rod 3, so that the ball head rod 3 can float flexibly in the spherical groove 1c.

[0070] When the product to be processed needs to be pressed and positioned, the top head 2 makes line contact with the spherical surface of the product to be processed.

[0071] A chamfer is designed at the end of the top head 2. This design can ensure that the top head 2 fits tightly with the spherical surface of the product to be processed, thereby achieving precise positioning.

[0072] The floating property of the ball head rod 3 in the spherical groove 1c is the key to the device.

[0073] The ball head rod 3 can be adaptively adjusted in different directions for universal adjustment, so that the gap between the ball head rod 3 and the top head 2 can be controlled to float within a range of ≤1°.

[0074] The floating design of the top head in this embodiment ensures that the top head 2 can fit tightly into the spherical inner cavity of the product to be processed. Even if the product to be processed undergoes a slight displacement during the processing, the top head 2 can adjust accordingly to maintain a tight fit.

[0075] In order to assist in fixing the ball head rod 3 and allow it to float slightly in the spherical groove 1c, the pressure plate 4 is fixed to one end of the cylindrical section 1b of the top body 1 by bolts. The pressure plate 4 assists in fixing the ball head rod 3 and allows it to float within a certain range.

[0076] In addition, the gap between the contact surface of the tip body 1 and the ball head connecting portion 3a of the ball head rod 3 is filled with lubricating liquid, such as lubricating oil. The presence of lubricating liquid reduces friction, promotes flexible adjustment of the ball head rod 3, and makes the whole device smoother during operation.

[0077] Finally, the connecting assembly 5 includes a disassembly nut 5a, a hexagon socket bolt 5b, a stop bolt 5c and an internally threaded round pin 5d, which cooperate with each other to tightly connect the top body 1, the top head 2 and the ball head rod 3 into an integrated structure.

[0078] The above connection method ensures the stability and reliability of the entire floating center device, allowing the device to work stably during the processing and improving the processing accuracy and efficiency.

[0079] In summary, the floating center device achieves precise pressing and positioning of the product to be processed through its unique structural design and working principle, while ensuring stability and reliability during the processing.

[0080] In addition, the present application also discloses a method for using a floating top device, which specifically includes the following steps:

[0081] a) Install the floating center device on the tailstock of the machine tool, ensuring that the center body 1 matches and is firmly connected to the tailstock of the machine tool;

[0082] b) Adjust the position of the tailstock of the machine tool so that the center body 1 is aligned with the spherical inner cavity of the product to be processed;

[0083] c) Start the power device of the tailstock of the machine tool to drive the center body 1 to move downward until the end chamfer of the center head 2 is in line contact with the spherical surface of the product to be processed;

[0084] d) Continue to drive the tailstock of the machine tool downward, and use the universal adjustment function of the ball head rod 3 to enable the top head 2 to adaptively adjust the angle to fit closely with the spherical inner cavity of the product to be processed;

[0085] e) When the top tip 2 is tightly fitted with the spherical inner cavity of the product to be processed, the product to be processed is pressed by the pressure provided by the tailstock of the machine tool to facilitate subsequent processing operations;

[0086] f) After the processing is completed, the power device of the tailstock of the machine tool is reversed to move the center body 1 upward and away from the spherical inner cavity of the product to be processed;

[0087] g) Finally, turn off the power device of the machine tool tailstock and remove the floating center device from the machine tool tailstock to complete the entire use process.

[0088] In some embodiments, in step d, the gap between the ball head rod 3 and the top head 2 is controlled to float within a range of ≤1° through the adaptive adjustment of the angle of the ball head rod 3, thereby ensuring that the top head 2 fits tightly with the spherical inner cavity of the product to be processed.

[0089] In some embodiments, the present application provides a method for using a floating top device, further comprising the following steps:

[0090] a1. Before installing the floating center device, check whether the connection between the center body 1, the center head 2 and the ball head rod 3 is firm, and ensure that the gap between the components is controlled within the specified range.

[0091] b1. During use, regularly check and add lubricating fluid to the gap between the contact surface of the tip body 1 and the ball head rod 3 to maintain a good lubrication effect.

[0092] c1. After the processing is completed, remove the floating center device from the tailstock of the machine tool by removing the connecting components 5 such as the nut 5a, the hexagon socket bolt 5b, the stop bolt 5c and the internal thread round pin 5d, and then clean and maintain it.

[0093] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0094] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it; when the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A floating center device, installed on the tailstock of a machine tool, characterized in that: include: The top body (1) serves as a mounting base for mounting the top head (2); A top head (2) is connected to the top body (1), and the end chamfer of the top head (2) is in line contact with the spherical surface of the product to be processed; The ball head rod (3) is built into the top body (1), one end of which is connected to the top body (1) and the other end of which is connected to the top head (2). The ball head rod (3) can be adjusted in a universal direction in a self-adaptive manner so that the gap between the ball head rod (3) and the top head (2) is controlled to float within a range of ≤1°.

2. The floating top device according to claim 1, characterized in that: The center body (1) is matched and installed with the tailstock of a machine tool, and the tailstock of the machine tool is a self-rotating Morse tailstock.

3. The floating top device according to claim 1, characterized in that: The tip body (1) comprises a conical section (1a) and a cylindrical section (1b); the outer diameter of the cylindrical section (1b) of the tip body (1) is greater than the outer diameter of the conical section (1a); one end of the conical section (1a) of the tip body (1) adopts a Morse taper structure, while one end of the cylindrical section (1b) is provided with a spherical groove (1c).

4. The floating top device according to claim 1, characterized in that: The ball head rod (3) comprises a ball head connecting portion (3a) and a columnar connecting portion (3b); the shape of the ball head connecting portion (3a) is adapted to the shape of a spherical groove (1c) at one end of the columnar section (1b) of the tip body (1), and is installed in the spherical groove (1c).

5. The floating top device according to claim 3, characterized in that: A pressure plate (4) is provided between the top body (1) and the top head (2); the pressure plate (4) is fixed to one end of the columnar section (1b) of the top body (1) and is used to assist in fixing the ball head rod (3) so that the ball head rod (3) floats slightly in the spherical groove (1c) of the top body (1).

6. The floating top device according to claim 4, characterized in that: A gap is provided between the contact surfaces of the tip body (1) and the ball head connecting portion (3a) of the ball head rod (3), and the gap is filled with lubricating liquid.

7. The floating top device according to claim 1, characterized in that: A connecting assembly (5) is also provided, and the connecting assembly (5) comprises a disassembly nut (5a), a hexagon socket bolt (5b), a stop bolt (5c) and an internally threaded round pin (5d).

8. The floating top device according to claim 7, characterized in that: The disassembly nut (5a) is threadedly connected to the center body (1) and is used to connect the center body (1) and the tailstock of the machine tool; The hexagon socket bolt (5b), the stop bolt (5c) and the internal threaded round pin (5d) cooperate with each other to connect the top body (1) with the top head (2) and the ball head rod (3), so that the top body (1), the top head (2) and the ball head rod (3) are combined into an integrated structure.

9. A method for using a floating top device, using the floating top device according to any one of claims 1 to 8, characterized in that: The following steps are involved: a) Install the floating center device on the tailstock of the machine tool, making sure that the center body (1) matches and is fixed to the tailstock of the machine tool; b) Start the machine tool, adjust the tailstock of the machine tool, and drive the center body (1) to move downward in the set direction; c) When the top tip (2) contacts the spherical inner cavity of the product to be processed, continue to apply pressure through the tailstock of the machine tool; d) Under the downward pressure of the tailstock of the machine tool, the ball head rod (3) performs an adaptive angle adjustment so that the top head (2) closely fits the spherical inner cavity of the product to be processed; e) The product to be processed is pressed and positioned by tightly fitting the top tip (2) with the inner cavity of the spherical surface of the product to be processed, so as to facilitate subsequent processing operations.

10. The method for using the floating top device according to claim 9, characterized in that: In step d), the gap between the ball head rod (3) and the top head (2) is controlled to float within a range of ≤1° through the adaptive adjustment of the angle of the ball head rod (3), thereby ensuring that the top head (2) fits tightly with the spherical inner cavity of the product to be processed.

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