Horizontal machining center provided with a head swing

Abstract

A horizontal machining center with a head swing, comprising a spindle holder, a driving mechanism, a spindle and a worktable for supporting, fixing and driving a product to be machined to rotate, the spindle is installed on the spindle holder and is driven to move by the driving mechanism, the spindle is provided with a head swing, the head swing is connected with a tool shank, the end of the tool shank away from the head swing is provided with a side connecting part and a bottom connecting part, the side connecting part is located on the outer side wall of the tool shank, the bottom connecting part is located on the bottom of the tool shank and faces the side of the worktable, the side connecting part and the bottom connecting part are both connected with a turning tool arranged along the central axis direction. Compared with the prior art, the horizontal machine tool can shorten the moving stroke of the spindle, ensure the rigidity of the spindle, and alleviate the problems of low product machining quality and low service life of the turning tool caused by the vibration of the spindle during the machining process. In addition, by arranging multiple turning tool connecting positions, when multiple turning tools are needed during the machining process, the tool changing operation is not needed or the tool changing frequency is saved, the tool changing time is saved, and the machining efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of horizontal machine tool technology, specifically relating to a horizontal machining center equipped with a tilting head. Background Technology

[0002] When machining products using horizontal machine tools, a swivel head is installed on the machine tool to process the product from different positions to create complex structures. For example, the flip-type horizontal five-axis machining center disclosed in Chinese Patent 201921514206.0 has a swivel head connected to the slide saddle. When it is necessary to process the product from different positions, the swivel head needs to be moved to the designated position before processing can begin. For example, when it is necessary to machine a groove on the side wall of the product to be processed (the side wall is opposite to the tip of the tool on the swivel head), the swivel head moves forward to machine the groove on the side wall of the product to be processed. When it is necessary to machine an inner hole on the top of the product to be processed, the swivel head needs to be moved above the product to be processed, then rotated so that it faces downward and is directly opposite the processing position, and then moved downward to machine the inner hole on the top of the product to be processed.

[0003] When machining the inner hole on the top of the product, the slide saddle needs to extend a long distance, which reduces its rigidity, makes it prone to vibration during machining, reduces the quality of the product, and greatly affects the service life of the cutting tool.

[0004] When tool changes are required during processing, the machine tool needs to perform a tool change operation, which reduces product processing efficiency. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a horizontal machining center with a tilting head.

[0006] To achieve the above objectives, the present invention discloses a horizontal machining center equipped with a swivel head, comprising a spindle frame, a drive mechanism, a spindle, and a worktable for supporting and fixing the workpiece and rotating it. The spindle is mounted on the spindle frame via the drive mechanism and is driven to move. A swivel head is provided on the spindle, and a tool holder is connected to the swivel head. The end of the tool holder away from the swivel head is provided with a side connection portion and a bottom connection portion. The side connection portion is located on the outer side wall of the tool holder, and the bottom connection portion is located at the bottom of the tool holder and faces the worktable. A cutting tool is connected to both the side connection portion and the bottom connection portion along its central axis.

[0007] Preferably, the central axis of the bottom connecting portion is arranged in the vertical direction.

[0008] Preferably, it also includes a locking element, which is detachably connected to the tool holder and used to lock the cutting tool.

[0009] More preferably, the side connecting portion and / or the bottom connecting portion are provided with threaded holes, and the locking member is a bolt, which is threaded into the threaded hole to lock the cutting tool.

[0010] More preferably, there are at least two threaded holes, and the line connecting the centers of the at least two threaded holes is parallel to the central axis of the corresponding connecting part.

[0011] Preferably, the side connection portion includes a front connection portion near the worktable, and the central axis of the front connection portion is arranged in a horizontal direction.

[0012] More preferably, the lateral connecting portion further includes a left connecting portion and a right connecting portion located on both sides of the front connecting portion.

[0013] Preferably, there are multiple main shafts, and each main shaft is connected to the swing head.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting a tool holder on the oscillating head, with a side connecting part on its outer wall and a bottom connecting part on its bottom, during turning, when machining the top of the product to be machined (such as machining an inner hole on the top), the cutting tool on the bottom connecting part is used for machining. Since the bottom connecting part faces the worktable, the oscillating head can perform machining without rotation. At this time, the spindle travel is smaller than that of the existing spindle (the length difference is the distance between the oscillating head shaft and the bottom connecting part), and the extension length is shorter. This helps to ensure the rigidity of the spindle and greatly alleviates the problems of low product quality and short tool life caused by spindle vibration during machining. In addition, since the oscillating head does not need to be rotated when machining the product to be machined, the machining operation of the oscillating head is simpler.

[0015] When machining the outer wall of a product (such as machining a groove on the outer wall), a cutting tool on the side connection is used. Since the tool holder increases the length of the cutting tool, the spindle does not need to extend a long distance, which helps to ensure the rigidity of the spindle.

[0016] The tool holder is equipped with a side connection part and a bottom connection part, providing multiple connection positions. Different types of turning tools can be connected to each connection position. In this way, when multiple turning tools are needed in the machining process, there is no need to change tools or the number of tool changes is reduced, saving tool change time and improving product machining efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a horizontal machining center equipped with a swing head according to the present invention;

[0018] Figure 2 A three-dimensional structural diagram of the oscillating head, tool holder, and lathe tool;

[0019] Spindle mount 1;

[0020] Lathe tool 2;

[0021] Spindle 3;

[0022] Workbench 4;

[0023] Shake head 5;

[0024] Handle 6; Side connecting part 61; Front connecting part 611; Left connecting part 612; Right connecting part 613; Bottom connecting part 62; Top connecting part 63; Locking member 64. Detailed Implementation

[0025] In the description of this invention, it should be understood that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of the different embodiments or examples, without contradiction.

[0028] The following is in conjunction with the appendix Figure 1-2 The technical solution of the present invention will be further described below.

[0029] A horizontal machining center equipped with a tilting head, which is a horizontal five-axis machining center, see [link / reference]. Figures 1-2The system includes a spindle frame 1, a drive mechanism, a spindle 3, and a worktable 4 for supporting and fixing the spindle and rotating the product to be processed. The spindle 3 is mounted on the spindle frame 1 via the drive mechanism and is driven to move. In this embodiment, the drive mechanism adopts an existing structure, including a motor and a slide rail mechanism (not shown in the figure). The spindle 3 is slidably connected to the slide rail mechanism and is driven to move by the motor. The above drive mechanism is an existing structure, and its specific structure will not be described in detail here. The spindle 3 is provided with a swivel head 5, which can be selected from commercially available swivel heads as needed. A tool holder 6 is connected to the swivel head 5. The end of the tool holder 6 away from the swivel head 5 is provided with a side connecting part 61 and a bottom connecting part 62. The side connecting part 61 is located on the outer side wall of the tool holder 6, and the bottom connecting part 62 is located at the bottom of the tool holder 6 and faces the worktable 4. A cutting tool 2 is connected to both the side connecting part 61 and the bottom connecting part 62 along its central axis.

[0030] The above-described horizontal machine tool features a tool holder 6 mounted on the swivel head 5. The tool holder 6 has a side connecting portion 61 on its outer wall and a bottom connecting portion 62 at its bottom. During turning, when machining the top of the workpiece (e.g., machining an inner hole on the top), the cutting tool 2 on the bottom connecting portion 62 is used. Since the bottom connecting portion 62 faces the worktable 4, the swivel head 5 can perform machining without rotation. In this case, the travel distance of the spindle 3 is smaller than that of existing spindles (the length difference is the distance L between the swivel head 5's axis and the bottom connecting portion 62), and the extension length is shorter. This helps ensure the rigidity of the spindle 3 and greatly alleviates the problems of low product quality and short tool life caused by spindle 3 vibration during machining. Furthermore, since the swivel head 5 does not need to be rotated when machining the workpiece, the machining operation of the swivel head 5 is simplified. When machining the outer wall of the product to be processed (such as machining a groove on the outer wall), the cutting tool 2 on the side connecting part 61 is used for machining. Since the tool holder 6 increases the length of the cutting tool, the spindle 3 does not need to extend a long distance, which helps to ensure the rigidity of the spindle 3. The tool holder 6 is provided with a side connecting part 61 and a bottom connecting part 62, providing multiple connection positions. Different types of cutting tools 2 can be connected to each connection position. In this way, when multiple cutting tools 2 are needed in the machining process, there is no need to change tools or the number of tool changes is reduced (in practice, the time required for one tool change is about 8 seconds), which greatly saves tool change time and improves product processing efficiency.

[0031] The worktable 4 is an existing worktable (such as the one disclosed in application number 202211064820.8), which is equipped with a fixture to fix the product to be processed. During the processing, the worktable 4 is driven by a drive device (such as a motor) to rotate, thereby causing the product to be processed to rotate. After the swivel head 5 rotates to the processing angle, it self-locks and moves close to the product to be processed for turning. When processing is required at other angles, the swivel head 5 can be rotated to change the processing angle of the cutting tool 2; after processing is completed, the swivel head 5 rotates back to the initial position.

[0032] Preferably, the central axis of the bottom connecting part 62 is arranged in the vertical direction.

[0033] In this embodiment, the lathe tool 2 is detachably connected to the tool holder 6, and a locking member 64 for locking the lathe tool 2 is detachably connected to the tool holder 6. By detachably connecting the lathe tool 2 to the tool holder 6 and locking it with the locking member 64, it is convenient to change the lathe tool during tool changing operations. At the same time, the position of the tool tip can be adjusted during the installation process, improving the applicability of the lathe tool 2.

[0034] Preferably, each connecting part is provided with a threaded hole, and the locking element 64 is specifically selected as a bolt, which is threaded into the threaded hole to press and lock the cutting tool 2. The above-mentioned locking structure of the cutting tool 2 is simple and easy to process and assemble.

[0035] Each connecting part has at least two threaded holes, preferably two in this embodiment. Correspondingly, the cutting tool 2 is secured by two bolts. Using two bolts to lock each connecting part improves assembly reliability and avoids the problem of reduced strength of the tool holder 6 caused by having multiple threaded holes on the connecting part.

[0036] Furthermore, the line connecting the centers of the two threaded holes is parallel to the central axis of the corresponding connecting part. That is, the two threaded holes are located on the same side of the connecting part. In this way, the two bolts press against the cutting tool 2 on the same side. This ensures the coaxiality of the cutting tool 2 and the corresponding connecting part while ensuring the reliability of the connection. It avoids the problem of low assembly accuracy of the cutting tool 2 due to low coaxiality, which in turn leads to low machining accuracy of the lathe.

[0037] In this embodiment, the side connecting portion 61 includes a front connecting portion 611 near the worktable 4, with the central axis of the front connecting portion 611 arranged horizontally. It also includes a left connecting portion 612 and a right connecting portion 613 located on either side of the front connecting portion 611. Furthermore, a top connecting portion 63 is provided on the top of the tool holder 6. Thus, the tool holder 6 has five connection points for connecting turning tools, allowing for the assembly of more types of turning tools. This eliminates the need for tool changes during machining or reduces the number of tool changes, saving tool change time and improving product processing efficiency.

[0038] In this embodiment, there are multiple spindles 3, and each spindle 3 is connected to a swing head 5. By setting multiple spindles 3, multiple spindles 3 can process the workpiece simultaneously, thereby improving processing efficiency.

[0039] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A horizontal machining center equipped with a tilting head, characterized in that: The system includes a spindle head, a drive mechanism, a spindle, and a worktable for supporting and rotating the workpiece. The spindle is mounted on the spindle head via the drive mechanism and is driven to move. A swivel head is mounted on the spindle, and a tool holder is connected to the swivel head. The end of the tool holder away from the swivel head has a side connection and a bottom connection. The side connection is located on the outer wall of the tool holder, and the bottom connection is located at the bottom of the tool holder and faces the worktable. A cutting tool is connected to both the side connection and the bottom connection, arranged along their central axis. The central axis of the tool is set vertically. The side connecting part includes a front connecting part near the worktable, and a left connecting part and a right connecting part located on both sides of the front connecting part. The central axis of the front connecting part is set horizontally. The cutting tool is a fixed cutting tool for turning. The cutting tools on each connecting part are fixedly connected to the swivel head along with the tool holder. When machining the top surface of the product to be machined, the cutting tool on the bottom connecting part can be directly facing the machining position without rotating the swivel head. When machining the side wall of the product to be machined, the cutting tool on the corresponding side connecting part can be directly facing the machining position without rotating the swivel head.

2. The horizontal machining center with a swivel head according to claim 1, characterized in that: It also includes a locking element, which is detachably connected to the tool holder and used to lock the cutting tool.

3. The horizontal machining center with a swivel head according to claim 2, characterized in that: The side connection portion and / or bottom connection portion are provided with threaded holes, and the locking element is a bolt, which is threaded into the threaded hole to lock the cutting tool.

4. The horizontal machining center with a swivel head according to claim 3, characterized in that: There are at least two threaded holes, and the line connecting the centers of the at least two threaded holes is parallel to the central axis of the corresponding connecting part.

5. The horizontal machining center equipped with a swivel head according to any one of claims 1-4, characterized in that: There are multiple main shafts, and each main shaft is connected to the swing head.

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