Double-station automatic clamping structure of double-spindle double-tool-turret numerical control machine tool

Abstract

The utility model discloses a double-station automatic clamping structure of a double-spindle double-tool-turret numerical control machine tool, which comprises a machine frame, a working cavity arranged on the machine frame and a numerical control machine tool main body formed by a turning component arranged in the working cavity. The turning assembly comprises a clamping assembly used for fixing a workpiece and a tool turret arranged on one side of the clamping assembly and used for turning the workpiece, wherein the clamping assembly and the tool turret are arranged in the working cavity. The clamping assembly comprises two sets of chucks which are arranged on the two sides of the working cavity and driven by two sets of first driving assemblies arranged on the two sides of the rack to rotate, an installation base which is arranged between the two sets of chucks and slides left and right through a second driving assembly arranged in the working cavity, and a clamping jaw installed on the installation base. The two tool turrets are driven to slide through the two third driving assemblies arranged in the working cavity, the structure can conduct position exchange and adjustment of workpieces on the corresponding stations, the operation frequency of manual intervention is effectively reduced, the comprehensiveness of the workpiece surface machining range is improved, and the use flexibility is improved.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, specifically to a dual-spindle dual-turret CNC machine tool with a dual-station automatic clamping structure. Background Technology

[0002] Twin-spindle, twin-turret CNC machine tools, as a common type of CNC machine tool, possess the core advantage of combining twin spindles and twin turrets. This allows for the simultaneous machining of multiple workpieces or cutting at multiple positions on the same workpiece, meeting diverse machining needs, effectively shortening machining time, and achieving high machining efficiency. However, common twin-spindle, twin-turret CNC machine tools often employ a chuck-like clamping structure for workpiece clamping at specific stations. While this offers some operational convenience, the structural setup at each station is often quite independent. During the turning process for workpieces with different structures and specific requirements, the end of the workpiece clamped on the chuck is often restricted or obstructed by the chuck's structure, preventing turning. Therefore, manual repositioning and adjustment of the workpiece are necessary, increasing the frequency of manual intervention. This lack of structural flexibility also presents certain limitations in application. Utility Model Content

[0003] The purpose of this invention is to provide a dual-station automatic clamping structure for a dual-spindle dual-turret CNC machine tool. This clamping structure can conveniently and quickly clamp and position the workpiece while automatically changing and adjusting the position of the workpiece at the corresponding station according to different turning requirements. This effectively reduces the frequency of manual intervention during the workpiece processing and further improves the comprehensiveness of the workpiece surface processing range. It also enhances the flexibility of this automatic clamping structure and the applicability of this dual-spindle dual-turret CNC machine tool.

[0004] The technical solution adopted by this utility model to solve the above problems is:

[0005] A dual-spindle, dual-turret CNC machine tool with a dual-station automatic clamping structure includes a frame, a working cavity on the frame, and a turning assembly within the working cavity, forming the main body of the CNC machine tool. The turning assembly includes a clamping assembly for workpiece fixing and a turret for workpiece turning, both located within the working cavity. The clamping assembly includes two sets of chucks driven to rotate by two sets of first drive assemblies located on both sides of the working cavity and located between the two sets of chucks, sliding left and right by a second drive assembly located within the working cavity, and grippers mounted on the chucks. The turrets are configured as two sets and are driven to slide by two sets of third drive assemblies located within the working cavity.

[0006] Preferably, a number of guide wheels are rotatably provided on the gripping end face of the gripper.

[0007] Preferably, the mounting base has a connecting seat slidably disposed thereon, and the gripper is mounted on the connecting seat and driven to slide by a cylinder disposed on the mounting base.

[0008] Preferably, the mounting base has baffles at both ends along the corresponding sliding direction.

[0009] Preferably, the baffle is provided with a collection groove.

[0010] Preferably, the third drive assembly includes a first seat that slides left and right within the working chamber via a third drive motor, a second seat that slides back and forth via a fourth drive motor acting on the first seat, and a fifth drive motor mounted on the second seat that is connected to and drives the turret to rotate.

[0011] Preferably, the gripper and turret installed in the working chamber are inclined at a certain angle.

[0012] Compared with the prior art, this utility model has the following advantages and effects:

[0013] This utility model relates to a dual-spindle, dual-turret CNC machine tool with a dual-station automatic clamping structure. The main body of this dual-spindle, dual-turret CNC machine tool, formed by the clamping assembly and two sets of turrets within the working chamber of the machine frame, can not only perform the turning process of workpieces in two stations according to different workpiece structures and corresponding turning requirements, but also, with the position setting of the jaws mounted on the mounting base between the two sets of chucks in the working chamber and the movement via the second drive assembly, it does not affect the normal turning process of workpieces of suitable length in both stations. It also enables the position exchange and adjustment of workpieces from one station to the other, effectively reducing manual intervention and the corresponding operation frequency. Furthermore, it allows for different tool head structures to be set using the two sets of turrets, further improving the comprehensiveness of the workpiece surface turning process. It possesses a certain structural flexibility for machining workpieces with different structures and corresponding turning requirements, thus improving the applicability of this dual-spindle, dual-turret CNC machine tool. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the main body of this CNC machine tool according to an embodiment of the present invention.

[0015] Figure 2-4 This is an enlarged view of the structure of the turning assembly inside the working cavity on the frame in an embodiment of this utility model.

[0016] Figure Numbers: Frame 100, Working Chamber 101, Slide Rail 1011, Third Slide Rail 1012, Turning Assembly 1, Clamping Assembly 11, First Drive Assembly 110, First Drive Motor 1101, Synchronous Belt Pulley 1102, Chuck 111, Mounting Base 112, Slider 1121, Second Slide Rail 1122, Baffle 1123, Collection Groove 1124, Gripper 113, Guide Wheel 1131, Second Drive Assembly 114, Second Drive Motor 1141, Lead Screw 1142, Connecting Base 115, Second Slider 1151, Cylinder 116, Turret 12, Third Drive Assembly 13, First Base 131, Third Slider 1311, Fourth Slide Rail 1312, Second Base 132, Fourth Slider 1321, Third Drive Motor 133, Second Lead Screw 1331, Fourth Drive Motor 134, Third Lead Screw 1341, Fifth Drive Motor 135. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0018] See Figure 1-3 This embodiment relates to a dual-spindle, dual-turret CNC machine tool with a dual-station automatic clamping structure. It includes a frame 100, a working cavity 101 mounted thereon, and a turning assembly 1 disposed within the working cavity 101, forming the main body of the CNC machine tool. The turning assembly 1 includes a clamping assembly 11 for workpiece fixing disposed within the working cavity 101, and a turret 12 disposed on one side of the clamping assembly 11 for workpiece turning. The clamping assembly 11 includes two sets of chucks 111 disposed on both sides of the working cavity 101 and driven to rotate by two sets of first drive assemblies 110 disposed on both sides of the frame 100, and a mounting base 112 disposed between the two sets of chucks 111 and slidably sliding left and right by a second drive assembly 114 disposed within the working cavity 101, with grippers 113 mounted on it. The turret 12 is configured as two sets and slidably driven by two sets of third drive assemblies 13 disposed within the working cavity 101.

[0019] Specifically in this embodiment, such as Figure 1 The overall structural arrangement of this type of CNC machine tool and its turning assembly 1 within the working cavity 101 can be referred to during use. Figure 2 As shown, the two sets of chucks 111 located on both sides of the working cavity 101 in the clamping assembly 11 can perform an adaptive clamping and fixing process on one end of a workpiece with a corresponding structure. Simultaneously, after the workpiece is fixed on the chucks 111, it can be driven to rotate by the first drive assembly 110 located at the corresponding position on the frame 100. Figure 2As can be seen from the diagram, the first drive assembly 110 includes a first drive motor 1101. The first drive motor 1101 is driven by a synchronous belt and drives the chuck 111 to rotate via a synchronous pulley 1102 connected to one end of the chuck 111's corresponding seat. This causes the workpiece to rotate under the drive of the chuck 111 and, under the drive of the third drive assembly 13, to perform a turning process on the workpiece held on the chuck 111. Specific details can be combined according to usage requirements. Figure 3 As shown, two sets of chucks 111 located on both sides of the working cavity 101 can respectively clamp and fix two sets of workpieces. Together with two sets of tool turrets 12, driven by the third drive assembly 13, this dual-station turning process within the working cavity 101 of the CNC machine tool body is realized. Simultaneously, within the working cavity 101, the mounting base 112, which slides left and right, and the corresponding positions of the jaws 113 mounted on it, are driven by the second drive assembly 114. Combined with the corresponding structural settings of the workpieces clamped on the chucks 111 and the two sets of tool turrets 12 driven by the third drive assembly... Under the driving action of 13, the sliding positions within the working cavity 101 do not interfere with each other, thus ensuring the normal progress of the turning process. Furthermore, when the workpiece in a single station needs to be adjusted during the turning process, the chuck 111 at the corresponding end of the working cavity 101 stops rotating. The gripper 113 mounted on the mounting base 112 can slide at the corresponding position and clamp the workpiece along the chuck 111 at the corresponding end of the working cavity 101 under the drive of the second driving assembly 114. Specifically, the second driving assembly 114 adopts... Figure 3The ball screw structure shown includes a second drive motor 1141 mounted below the mounting base 112 and a lead screw shaft 1142 mounted on it, which acts on the mounting base 112. Driven by the second drive motor 1141, the lead screw shaft 1142 rotates in the corresponding direction, while the mounting base 112 slides in the corresponding direction via a corresponding slider 1121 at the bottom and a matching slide rail 1011 at the bottom of the working cavity 101. The workpiece can be fixed in position by the gripper 113, and the chuck 111 at one end can move accordingly. When the workpiece is opened, the gripper 113 mounted on the mounting base 112 can move along the direction of the chuck 111 at the other end of the working cavity 101 under the drive of the second drive assembly 114. At the same time, when the corresponding end of the workpiece contacts the chuck 111 at the other end which is in the opened state, the workpiece is clamped and fixed. At this time, the gripper 113 opens and returns to the initial position on the mounting base 112 under the drive of the second drive assembly 114, thereby realizing the position switching of the workpiece in one station in the working cavity 101 to another station and the turning process. This type of dual-spindle, dual-turret CNC machine tool body, formed by the structural arrangement of the clamping assembly 11 and the two sets of tool turrets 12 in the turning assembly 1 within the working cavity 101 of the frame 100, can not only perform dual-station turning processes by cooperating with the two sets of chucks 111 positioned on both sides of the working cavity 101 and the two sets of tool turrets 12 on one side, according to different workpiece structures and corresponding turning requirements, but also can cooperate with the position setting method of the jaws 113 mounted on the mounting base 112 between the two sets of chucks 111 within the working cavity 101, and the first... The movement of the dual-drive assembly 114 does not affect the normal turning process of the workpiece structure with the appropriate length on both stations. At the same time, it can realize the position exchange and adjustment process of the workpiece on one station to the other station, effectively reducing manual intervention and the corresponding operation frequency. It can also be combined with the two sets of tool turrets 12 to set different tool head structures, which can further improve the comprehensiveness of the turning process on the workpiece surface. It has a certain structural flexibility for machining workpieces with different structures and turning requirements under the corresponding structures, thus improving the applicability of such dual-spindle dual-turret 12 CNC machine tool.

[0020] The clamping end face of the jaw 113 is rotatably provided with several sets of guide wheels 1131. The addition of several sets of guide wheels 1131 on the clamping end face of the jaw 113 enables the simultaneous clamping of both ends of the workpiece at the corresponding workstation in conjunction with the chuck 111 according to different usage requirements. The workpiece can be turned during the rotation process under the driving action of the first driving component 110 and with the assistance of the several sets of guide wheels 1131 on the clamping end face of the chuck 111 and the jaw 113. This can further improve the flexibility of the jaw 113 and the positional stability of the corresponding workpiece during the turning process, meet different turning requirements, and further improve the turning effect and turning stability of the turning component 1.

[0021] A connecting seat 115 is slidably disposed on the mounting base 112, and the gripper 113 is mounted on the connecting seat 115 and driven to slide by a cylinder 116 disposed on the mounting base 112. Specifically, from Figure 2 and Figure 4 As can be seen, the gripper 113, which is installed on the connecting seat 115 in this manner, can slide in the corresponding direction under the push of the cylinder 116 through multiple sets of second sliders 1151 provided at the bottom of the connecting seat 115 and the matching second slide rails 1122 provided on the mounting seat 112. Thus, during the turning process of the workpiece, the gripper 113 can... Figure 4 The retraction in the indicated state effectively avoids unnecessary interference from the position setting of the chuck 113 on the normal operation of the workpiece turning process, further increasing the machining space for the corresponding workpieces between the two sets of chucks 111. Simultaneously, during use... Figure 2 In the state shown, when the gripper 113 extends by the push of the cylinder 116, it clamps, fixes, and adjusts the position of the workpiece on the corresponding chuck 111, further improving the functional diversity and usage flexibility of this automatic clamping structure.

[0022] The mounting base 112 has baffles 1123 at both ends of its base along the corresponding sliding direction, from... Figure 3 As can be seen, the structural addition and position setting of the baffle 1123 can provide a certain shielding and protection effect on the second drive component 114 located below the mounting base 112 during the workpiece turning process. It can also be used to add and set the baffle structure along the corresponding edges on both sides of the baffle 1123 with bolts, without affecting the normal movement of the mounting base 112, thereby further improving the shielding and protection effect on the second drive component 114, reducing the unnecessary impact on the driving process of the second drive component 114 caused by impurities such as iron filings generated during the workpiece turning process, and improving the driving stability of the second drive component 114.

[0023] The baffle 1123 is provided with a collection groove 1124. The structure of the collection groove 1124 on the baffle 1123 can facilitate the collection and treatment of impurities such as iron filings generated during the workpiece turning process, effectively reduce the degree of pollution inside the working cavity 101, improve the structural flexibility of the baffle 1123, and meet different usage needs.

[0024] The third drive assembly 13 includes a first seat 131 within the working cavity 101, which slides left and right via a third drive motor 133; a second seat 132, which slides back and forth via a fourth drive motor 134 on the first seat 131; and a fifth drive motor 135 mounted on the second seat 132, connected to and driven to rotate the turret 12. Figure 1-4 The specific structural configuration of the third drive assembly 13 can be seen. Both the third drive motor 133 and the fourth drive motor 134 employ ball screw drives. Specifically, the turret 12 can switch between different cutting heads during rotation under the drive of the fifth drive motor 135. Simultaneously, during turning, the third drive motor 133 drives the second lead screw shaft 1331 to rotate, simultaneously actuating the first seat 131 on the second lead screw shaft 1331. This, along with multiple sets of third sliders 1311 at the bottom of the first seat 131 and corresponding third slide rails 1012 at the bottom of the working cavity 101, allows for left-right sliding within the working cavity 101 located on one side of the clamping assembly 11. During this left-right sliding, the second seat 132 on the first seat 131 and the turret 12 can rotate under the drive of the third lead screw shaft 1341 by the fourth drive motor 134 on the first seat 131. This allows the second seat 132 acting on the third lead screw shaft 1341, combined with its bottom... Some fourth sliders 1321 are provided with matching fourth slide rails 1312 at corresponding positions on the first base 131, allowing them to slide up and down on the first base 131. This enables the turret 12 on the second base 132, connected to the fifth drive motor 135, to perform turning processes on the workpiece held and fixed on the chuck 111 in the clamping assembly 11 at different positions. In addition, the two sets of third drive assemblies 13 using this driving method and corresponding structure respectively drive the two sets of turrets 12 in the working cavity 101 to perform turning processes on the two sets of workpieces. The workpieces held in the chuck 111 move independently during dual-station turning without interference, exhibiting high transmission stability. This further enhances the stability and efficiency of the turret 12 during turning, improving the structural compactness and turning effect of this dual-spindle dual-turret CNC machine tool. Furthermore, by combining multiple tool heads with different structural configurations on the two turrets 12, the machine tool's performance and structural flexibility are further improved, meeting diverse turning requirements and enhancing its applicability and practicality.

[0025] The gripper 113 and turret 12 installed in the working chamber 101 are inclined at a certain angle. The gripper 113 and turret 12 inclined at a certain angle in the working chamber 101 can further expand the operator's field of vision and effectively improve the convenience of operation. At the same time, it also facilitates the daily inspection, cleaning and maintenance of the working chamber 101.

[0026] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A dual-spindle, dual-turret CNC machine tool with a dual-station automatic clamping structure, comprising a frame, a working cavity mounted thereon, and a turning assembly disposed within the working cavity, forming the main body of the CNC machine tool, characterized in that: The turning assembly includes a clamping assembly for fixing the workpiece and a tool turret for turning the workpiece, respectively arranged in the working cavity. The clamping assembly includes two sets of chucks arranged on both sides of the working cavity and driven to rotate by two sets of first drive assemblies arranged on both sides of the frame, and a mounting base and jaws mounted thereon, which are arranged between the two sets of chucks and slidable left and right by a second drive assembly arranged in the working cavity. The tool turret is configured with two sets and is driven to slide by two sets of third drive assemblies arranged in the working cavity.

2. The dual-spindle, dual-turret CNC machine tool's dual-station automatic clamping structure according to claim 1, characterized in that: Several sets of guide wheels are rotatably arranged on the gripping end face of the gripper.

3. The dual-spindle, dual-turret CNC machine tool's dual-station automatic clamping structure according to claim 1, characterized in that: The mounting base has a connecting seat that is slidably disposed on it, and the gripper is mounted on the connecting seat and is driven to slide by a cylinder disposed on the mounting base.

4. The dual-spindle, dual-turret CNC machine tool's dual-station automatic clamping structure according to claim 1, characterized in that: The mounting base has baffles at both ends along the corresponding sliding direction.

5. The dual-spindle, dual-turret CNC machine tool's dual-station automatic clamping structure according to claim 4, characterized in that: The baffle is provided with a collection groove.

6. The dual-spindle, dual-turret CNC machine tool's dual-station automatic clamping structure according to claim 1, characterized in that: The third drive assembly includes a first seat that slides left and right within the working chamber via a third drive motor, a second seat that slides back and forth via a fourth drive motor acting on the first seat, and a fifth drive motor mounted on the second seat that is connected to and drives the turret to rotate.

7. The dual-spindle, dual-turret CNC machine tool's dual-station automatic clamping structure according to claim 1, characterized in that: The gripper and turret installed in the working chamber are set at a certain angle.

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