A center assembly device and machine tool

Abstract

The utility model provides a kind of top assembly device and machine tool, belong to machine tool processing technical field.Top assembly device includes top assembly and the tool turret and feed shaft installed in machine tool main body;Top assembly includes tool holder, top and elastic fastener, tool holder is installed in tool turret, tool holder is provided with the installation slot for installing top, elastic fastener is installed in tool holder, and elastic fastener is used to fix top in installation slot;Tool turret can drive tool holder to move to the position of the axis of installation slot and the axis of feed shaft overlap, and tool holder and feed shaft can be close to each other, to insert top installed in installation slot to the end of feed shaft, or the top inserted in the end of feed shaft is inserted into tool holder.The application cooperates tool turret, tool holder and feed shaft, completes the installation and disassembly of top, without additional fixed tailstock on machine tool, improve the convenience and assembly efficiency of top installation.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool processing technology, specifically relating to a top-mounted assembly device and machine tool. Background Technology

[0002] When machining long shaft parts using existing machine tools, one end of the long shaft part needs to be fixed first, and then the other end of the long shaft part needs to be clamped with a center to stabilize the position of the long shaft part and facilitate its machining.

[0003] Existing twin-spindle turret machine tools include a main spindle and a secondary spindle, but lack a tailstock center, making it impossible to machine long shaft parts. If machining long shaft parts is required, an additional tailstock needs to be added to the machine tool, resulting in a more complex machine tool structure. Utility Model Content

[0004] The purpose of this application is to provide a top-level assembly device and machine tool to solve the aforementioned technical problems existing in the prior art.

[0005] This application is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a center assembly device, including a center assembly and a turret and a feed axis mounted on the machine tool body; the center assembly includes a tool holder, a center, and a resilient fastener, the tool holder is mounted on the turret, the tool holder is provided with a mounting groove for mounting the center, the resilient fastener is mounted on the tool holder, and the resilient fastener is used to fix the center to the mounting groove; the turret can drive the tool holder to move to a position where the axis of the mounting groove overlaps with the axis of the feed axis, and the tool holder and the feed axis can approach each other, thereby inserting the center mounted in the mounting groove into the end of the feed axis, or inserting the center inserted into the end of the feed axis into the tool holder.

[0007] Secondly, embodiments of this application provide a machine tool, including the top assembly device provided in the first aspect embodiment.

[0008] The technical solution provided in this application can achieve the following beneficial effects:

[0009] In this application, by mounting the tool holder on the tool turret and using the tool turret to adjust the position of the tool holder, the feed axis and the tool holder can be brought closer together. This allows the tip mounted in the tool holder to be inserted into the feed axis, completing the tip installation, or the tip inserted into the feed axis to be inserted into the tool holder, completing the tip removal. Neither tip installation nor removal requires additional fixation of the tailstock on the machine tool. Furthermore, the automated control of the tool turret enables automated tip installation, improving tip assembly efficiency. Additionally, elastic fasteners are provided on the tool holder to fix the tip's position in the mounting slot, ensuring the tip remains stable during turret movement. Simultaneously, the elastic fasteners are flexible, allowing the tip to be pushed into or out of the mounting slot by external force, facilitating tip replacement between the tool holder and the feed axis. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the overall structure of the top assembly device provided in some embodiments of this application. Figure 1 ;

[0012] Figure 2 This is a schematic diagram of the overall structure of the top assembly device provided in some embodiments of this application. Figure 2 ;

[0013] Figure 3 These are schematic diagrams of the structure of top-level components provided in some embodiments of this application;

[0014] Figure 4 This is a cross-sectional view of the top component provided in some embodiments of this application;

[0015] Figure 5 This is a schematic diagram showing the disassembled top-level components provided in some embodiments of this application;

[0016] Figure 6 This is a schematic diagram of the structure of the tool holder provided in some embodiments of this application;

[0017] Figure 7 These are top-level structural schematic diagrams provided in some embodiments of this application;

[0018] Figure 8 This is a schematic diagram of the overall structure of the feed shaft provided in some embodiments of this application;

[0019] Figure 9 This is a cross-sectional view of the feed axis provided in some embodiments of this application.

[0020] In the diagram: 100-center assembly, 110-tool holder, 111-mounting slot, 112-threaded hole, 120-center, 121-tip, 122-fixed section, 123-plug section, 124-mating slot, 130-elastic fastener, 140-cover plate, 141-groove, 200-turret, 300-feed axis, 310-chuck, 311-moving jaw, 320-drawing rod, 330-rotary cylinder. Detailed Implementation

[0021] The following description provides many different embodiments or examples for implementing various features of the present invention. The elements and arrangements described in the specific examples below are only for concise expression of the present invention and are merely examples, not intended to limit the present invention.

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] This application provides a top-mounted assembly device, with reference to... Figure 1 and Figure 2 As shown, it includes a top-mounted assembly, as well as a turret 200 and a feed axis 300 mounted on the machine tool body.

[0024] A turret 200 is a tool indexing device mounted on a machine tool, used to quickly switch between different tools during machining to perform various machining operations, such as turning, milling, and drilling. The turret 200 is typically mounted near the machine tool spindle or machining area, and tool switching is achieved through rotation and positioning.

[0025] The top components include the tool holder 110, the top point 120, and the flexible fastener 130, as shown in the reference. Figures 3 to 5 As shown, the tool holder 110 is mounted on the turret 200, and the position of the tool holder 110 is adjusted by moving the turret 200. The tool holder 110 is provided with a mounting groove 111 for mounting the tip 120, and an elastic fastener 130 is mounted on the tool holder 110 to fix the tip 120 to the mounting groove 111.

[0026] The turret 200 can drive the tool holder 110 to move and adjust its position so that the tool holder 110 moves to a position where the axis of the mounting groove 111 overlaps with the axis of the feed axis 300, that is, the tool holder 110 moves to a position where it is in the same straight line direction as the feed axis 300. The tool holder 110 and the feed axis 300 can move closer to each other, so that the tip 120 mounted in the mounting groove 111 can be inserted into the end of the feed axis 300, or the tip 120 inserted into the end of the feed axis 300 can be inserted into the tool holder 110.

[0027] The center 120 is used to clamp long shaft-like parts to be machined. In a dual-spindle turret 200 machine tool, when the main spindle clamps and fixes the long shaft-like part, the center 120 needs to be installed on the secondary spindle to clamp the other end of the long shaft-like part and stabilize its position. When the secondary spindle clamps and fixes the long shaft-like part, the center 120 needs to be installed on the main spindle. The feed axis 300 provided in this embodiment can be either the main spindle or the secondary spindle.

[0028] In this embodiment, the position of the tool holder 110 is adjusted by the cooperation of the turret 200 and the tool holder 110, allowing the feed axis 300 and the tool holder 110 to approach each other. This allows the tip 120, installed in the tool holder 110, to be inserted into the feed axis 300, completing the installation of the tip 120. Alternatively, the tip 120, inserted into the feed axis 300, can be inserted into the tool holder 110, completing the removal of the tip 120. Neither the installation nor removal of the tip 120 requires additional fixation of the tailstock on the machine tool. Furthermore, the automated control of the turret 200 enables automated installation of the tip 120, improving assembly efficiency.

[0029] The turret 200 is an existing structure on the machine tool. The tool holder 110 is directly added to the turret 200, fully utilizing the adjustable position of the turret 200 to adjust the position of the tool holder 110, thereby cooperating with the feed axis 300 to complete the switching of the center point 120, without the need for an additional drive mechanism on the machine tool. In some embodiments, the tool holder 110 is mounted on the turret 200 at the tool mounting position. The tool holder 110 and the feed axis 300 are close to each other; the tool holder 110 can move along its axial direction, the feed axis 300 can move along its axial direction, or both can move.

[0030] When the tip 120, which is installed in the tool holder 110, is inserted into the feed axis 300, part of the tip 120 is located in the mounting groove 111 of the tool holder 110, and part of it is exposed outside the mounting groove 111, making it easy to insert into the feed axis 300. After the tip 120 is inserted into the feed axis 300, the locking mechanism on the feed axis 300 locks the tip 120, the tool holder 110 and the feed axis 300 separate from each other, the tip 120 is clamped by the feed axis 300 and follows the feed axis 300 to separate from the tool holder 110, and the tip 120 is withdrawn from the tool holder 110. During the process of transferring the tip 120 mounted on the feed axis 300 to the tool holder 110, part of the tip 120 is fixedly clamped and locked by the feed axis 300, and part is located outside the feed axis 300. The tool holder 110 and the feed axis 300 approach each other, the tip 120 is inserted into the tool holder 110, the locking mechanism of the feed axis 300 releases the tip 120, the locking of the tip 120 is released, the feed axis 300 and the tool holder 110 separate from each other, and the tip 120 disengages from the feed axis 300.

[0031] The tool holder 110 is equipped with a resilient fastener 130. When the tip 120 is fixed to the tool holder 110, the resilient fastener 130 has a certain degree of elasticity. When the tip 120 is subjected to external force, it can compress the resilient fastener 130, thereby inserting into or detaching from the mounting slot 111, facilitating the replacement of the tip 120 between the tool holder 110 and the feed axis 300. When the tip 120 is not subjected to external force, the resilient fastener 130 fixes the tip 120, stabilizing its position within the tool holder 110 and ensuring its stability during the movement of the turret 200.

[0032] In some embodiments, reference may be made to Figure 6 As shown, the mounting groove 111 extends through both ends of the tool holder 110. One end of the mounting groove 111 is an open end for the insertion of the center tip 120, and the other end is covered by a cover plate 140. The mounting groove 111 extends through the tool holder 110, and both ends are open. One end is open for the insertion and removal of the center tip 120, while the other end is covered by a cover plate 140 to protect the internal space of the mounting groove 111 and prevent debris from entering the mounting groove 111 during machining, thus affecting the assembly of the center tip 120 and the mounting groove 111. Furthermore, the open ends of the mounting groove 111 allow the position of the cover plate 140 to be changed and the orientation of the open end of the mounting groove 111 to be adjusted according to the different positions of the feed axis 300 where the center tip 120 is to be installed, facilitating the mating of the center tip 120 with feed axes 300 in different positions.

[0033] Preferred, Reference Figure 5 and Figure 6As shown, a groove 141 is provided on the surface of the cover plate 140 near the mounting groove 111. The groove 141 communicates with the mounting groove 111. While keeping the thickness of the area where the cover plate 140 connects with the tool holder 110 unchanged, the internal space of the mounting groove 111 is expanded. The mounting groove 111 can accommodate a longer tip 120.

[0034] In some embodiments of this application, the elastic fastener 130 is installed on the inner wall of the mounting groove 111, and there are multiple elastic fasteners 130. The multiple elastic fasteners 130 are arranged circumferentially along the mounting groove 111 to improve the fixing stability of the tip 120 and to stably install the tip 120 into the mounting groove 111.

[0035] In some embodiments of this application, the elastic fastener 130 can be an elastic structure such as rubber or silicone disposed on the inner wall of the mounting groove 111. The elastic fastener 130 is located on the moving path of the tip 120 inserted into the tool holder 110. Because it has a certain elasticity, it can be squeezed. Therefore, the elastic fastener 130 will not affect the assembly of the tip 120 into the mounting groove 111, and can also fix the position of the tip 120.

[0036] In some other embodiments of this application, the elastic fastener 130 is a spring set screw. A spring set screw is a mechanical part mainly composed of a set screw (also called a set screw bolt) and a spring. When the set screw is screwed into an object, the spring is compressed, generating elastic force. This elastic force can maintain a tight contact between the set screw and the connected object, playing a role in fixing, connecting, or adjusting the position. It is widely used in the assembly and connection of various mechanical equipment, such as machine tools, printing presses, and packaging machines. In these devices, spring set screws can fix the position of components, prevent loosening due to vibration or impact, and ensure the normal operation and accuracy of the equipment.

[0037] refer to Figure 5 and Figure 6 As shown, the tool holder 110 is provided with a threaded hole 112, which connects the external environment corresponding to the tool holder 110 with the mounting groove 111. The elastic fastener 130 is installed in the threaded hole 112, which facilitates the installation and adjustment of the elastic fastener 130.

[0038] The structure of the top 120 can be used as a reference. Figure 7 As shown, the tip 120 includes a tip 121, a fixed section 122, and an insertion section 123 arranged sequentially along its axial direction. The tip 121 is used to press against the workpiece to be processed. The radial dimension of the fixed section 122 is larger than the radial dimension of the insertion section 123. The circumferential sidewall of the fixed section 122 is used to contact and cooperate with the inner wall of the mounting groove 111. The insertion section 123 is used to be inserted into the feed shaft 300. The circumferential sidewall of the fixed section 122 is provided with a mating groove 124, which is used to accommodate the end of the elastic fastener 130.

[0039] The fixed section 122 of the center point 120 is used to mate with the tool holder 110, and the insertion section 123 is used to mate with the feed axis 300. The radial dimension of the insertion section 123 is small and will not affect the mating between the fixed section 122 and the tool holder 110. The mating groove 124 is used to accommodate the end of the elastic fastener 130, improving the fixing effect of the elastic fastener 130 on the center point 120.

[0040] In some preferred embodiments, the mating groove 124 is an annular structure, surrounding the fixed section 122. This improves the overall flexibility of the device, allowing the tip 120 to rotate at any angle within the mounting groove 111, and the end of the elastic fastener 130 to be inserted into the mating groove 124.

[0041] A chuck 310 is provided at the end of the feed axis 300. The chuck 310 is a locking mechanism used to clamp the workpiece. Figure 1 and Figure 2 In the diagram, only a portion of the feed axis 300 is shown where the chuck 310 is located. The chuck 310 includes movable jaws 311 movably mounted on the feed axis 300, as shown in the reference diagram. Figure 8 As shown, the movable jaws 311 move radially along the feed axis 300 to clamp the tip 120. When the movable jaws 311 move closer together, they clamp the tip 120; when they move further apart, they release the clamp on the tip 120, allowing it to easily detach from the feed axis 300. The chuck 310 can be used directly with existing products; see reference [reference needed]. Figure 9 As shown, the movable jaw 311 is connected to a pull rod 320, and the pull rod 320 is connected to a rotary cylinder 330. The rotary cylinder 330 drives the pull rod 320, which in turn pulls the movable jaw 311 of the chuck 310, causing the movable jaw 311 to move radially along the feed shaft 300, thereby achieving the clamping and loosening of the chuck 310.

[0042] This application also provides a machine tool, including the top 120 assembly device provided in any of the above embodiments.

[0043] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0044] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A top-mounted assembly device, characterized in that, Includes the top-mounted components as well as the turret (200) and feed axis (300) mounted on the machine tool body. The tip assembly includes a tool holder (110), a tip (120), and a resilient fastener (130). The tool holder (110) is mounted on the turret (200). The tool holder (110) is provided with a mounting groove (111) for mounting the tip (120). The resilient fastener (130) is mounted on the tool holder (110) and is used to fix the tip (120) to the mounting groove (111). The turret (200) can drive the tool holder (110) to move to a position where the axis of the mounting groove (111) overlaps with the axis of the feed shaft (300), and the tool holder (110) and the feed shaft (300) can approach each other, thereby inserting the tip (120) mounted in the mounting groove (111) into the end of the feed shaft (300), or inserting the tip (120) inserted into the end of the feed shaft (300) into the tool holder (110).

2. The top assembly device according to claim 1, characterized in that, The mounting groove (111) extends through both ends of the tool holder (110). One end of the mounting groove (111) is an open end into which the tip (120) extends, and the other end is covered by a cover plate (140).

3. The top assembly device according to claim 2, characterized in that, The cover plate (140) has a groove (141) on its surface near the mounting groove (111), and the groove (141) is connected to the mounting groove (111).

4. The top assembly device according to claim 1, characterized in that, The elastic fastener (130) is installed on the inner wall of the mounting groove (111), and there are multiple elastic fasteners (130), which are arranged circumferentially along the mounting groove (111).

5. A top-mounted assembly device according to claim 1, characterized in that, The elastic fastener (130) is a spring set screw.

6. A top-mounted assembly device according to claim 5, characterized in that, The tool holder (110) is provided with a threaded hole (112), the threaded hole (112) connects the external environment corresponding to the tool holder (110) with the mounting groove (111), and the elastic fastener (130) is threadedly installed in the threaded hole (112).

7. A top-mounted assembly device according to claim 6, characterized in that, The tip (120) includes a tip (121), a fixed section (122), and a plug section (123) arranged sequentially along its axial direction. The tip (121) is used to press against the workpiece to be processed. The radial dimension of the fixed section (122) is larger than the radial dimension of the plug section (123). The circumferential sidewall of the fixed section (122) is used to contact and cooperate with the inner wall of the mounting groove (111). The plug section (123) is used to be inserted into the feed shaft (300). The circumferential sidewall of the fixed section (122) is provided with a mating groove (124). The mating groove (124) accommodates the end of the elastic fastener (130).

8. A top-mounted assembly device according to claim 7, characterized in that, The mating groove (124) is an annular structure and is arranged around the fixed section (122).

9. A top-mounted assembly device according to claim 1, characterized in that, The feed shaft (300) is provided with a chuck (310) at its end. The chuck (310) includes a movable jaw (311) movably mounted on the feed shaft (300). The movable jaw (311) moves radially along the feed shaft (300) to clamp the tip (120).

10. A machine tool, characterized in that, Includes the top assembly device as described in any one of claims 1-9.

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