Adjustable clamping mechanism of machining center

Abstract

The utility model relates to the technical field of machining centers, in particular to a machining center adjustable clamping mechanism which comprises a machining table, an adjusting assembly is arranged at the upper end of the machining table, and the adjusting assembly comprises an adjusting frame arranged at the upper end of the machining table. A first air cylinder is arranged at the upper end of the fixing plate. Tools corresponding to different machining procedures are placed on the tool magazine, when the tools need to be replaced according to the machining procedures, the clamping assembly is moved to the tools placed at the upper end of the tool magazine, the first air cylinder is started to extend, connectors in the upper ends of the tools are inserted into the sleeve rods, and then the second air cylinder is started to extend downwards till the balls make contact with the connectors in the upper ends of the tools; and under clamping and fixing of the ball, the tool is fixedly installed, so that the tool changing strategy can be automatically adjusted according to the machining task, manual intervention is not needed, and the tool changing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of machining center technology, and in particular to an adjustable clamping mechanism for machining centers. Background Technology

[0002] Machining centers evolved from CNC milling machines. The biggest difference between them is that machining centers have the ability to automatically change machining tools. By installing tools for different purposes on the tool magazine, the machining tools on the spindle can be changed in one clamping by an automatic tool changer, thus realizing multiple machining functions. Machining centers often use clamping mechanisms to fix the workpiece.

[0003] Existing CNC milling machines often need to complete multiple composite machining processes, such as milling, drilling, boring, and tapping, in a single setup. However, the existing clamping mechanisms are relatively complex, and the tool changing clamping mechanisms are difficult to automatically adjust the tool changing strategy according to the machining task, requiring manual intervention and resulting in low efficiency. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] Specifically, the technical problem to be solved by this utility model is to provide an adjustable clamping mechanism for machining centers, so as to solve the problem that existing CNC milling machines often need to complete multiple composite machining processes, such as milling, drilling, boring, and tapping, in one clamping. However, the existing clamping mechanisms are relatively complex, and the tool changing clamping mechanism is difficult to automatically adjust the tool changing strategy according to the machining task, requiring manual intervention and resulting in low efficiency.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] An adjustable clamping mechanism for a machining center includes a machining table. An adjustment assembly is provided on the upper end of the machining table, and the adjustment assembly includes an adjustment frame located on the upper end of the machining table. A fixing plate is provided on one side of the upper outer wall of the adjustment frame. A first cylinder is provided on the upper end of the fixing plate, and a connecting plate is provided on the extended end of the first cylinder. A clamping assembly is provided on the lower end of the connecting plate. The clamping assembly includes a third motor located on the lower end of the connecting plate. A turntable is provided at the output end of the third motor. A fixing rod is provided on the lower end of the turntable. A sleeve rod is fitted on the outer wall of the fixing rod, and a piston is inserted into the inner wall of the fixing rod. A second cylinder is provided on the lower end of the turntable. Multiple sets of balls are inserted into the outer wall of the lower end of the fixing rod. An adjustment groove that mates with the balls is opened on the inner wall of the lower end of the sleeve rod. A cutting tool is inserted into the lower end of the fixing rod.

[0008] As an improved technical solution, the upper end of the processing table is provided with an inner groove, a first motor is provided on one side of the outer wall of the processing table, a first ball screw is provided at the output end of the first motor, a first ball screw sleeve is fitted on the outer wall of the first ball screw, and the end of the first ball screw away from the first motor passes through the inner groove and is rotatably connected to the inner wall of the inner groove.

[0009] As an improved technical solution, a slide rod is fixedly provided inside the end of the inner groove away from the first ball screw, and a sliding sleeve is movably sleeved on the outer wall of the slide rod. The sliding sleeve and the first ball screw sleeve are both movably inserted into the inner groove, and the upper ends of the sliding sleeve and the first ball screw sleeve are fixedly connected to the adjusting frame.

[0010] As an improved technical solution, a second motor is provided on the upper outer wall of the adjustment frame, a second ball screw is provided at the output end of the second motor, a second ball sleeve is sleeved on the outer wall of the second ball screw, the end of the second ball screw away from the second motor is rotatably connected to the inner wall of the adjustment frame, and the second ball sleeve is movably inserted into the upper inner wall of the adjustment frame.

[0011] As an improved technical solution, the sleeve rod is movably sleeved on the outer wall of the fixed rod, the inner wall of the sleeve rod is fixedly provided with a slider, and the slider and piston are fixedly connected. The outer wall of the fixed rod is provided with a groove that cooperates with the slider, and the piston is movably inserted into the inner wall of the fixed rod.

[0012] As an improved technical solution, the extension end of the second cylinder and the lower end of the sleeve are fixedly connected to the outer wall. The upper end interface of the cutter is movably inserted into the inner wall of the fixed rod. The lower end of the fixed rod has a circular hole that matches the ball. The ball is movably inserted into the circular hole. The adjustment groove is a frustum shape that is narrow at the top and wide at the bottom. The ball can slide up and down along the inner wall of the adjustment groove.

[0013] As an improved technical solution, the upper side of the machining table is provided with multiple tool magazines, and multiple sets of tools of different types are attached to the upper end of the tool magazines.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are:

[0015] 1. This utility model has a tool magazine containing tools corresponding to different machining processes. When it is necessary to change tools according to the machining process, the clamping assembly is moved to the tool placed on the upper end of the tool magazine, the first cylinder is activated to extend, and the interface at the upper end of the tool is inserted into the sleeve rod. Then, the second cylinder is activated to extend downward until the ball contacts the interface at the upper end of the tool. Under the clamping and fixing of the ball, the tool is fixed and installed. Thus, the tool changing strategy can be automatically adjusted according to the machining task without manual intervention, thereby increasing the efficiency of tool changing.

[0016] 2. In this utility model, when a specific part of the workpiece on the upper part of the machining table needs to be machined, the first motor is started, and the adjusting frame moves with the movement of the first ball screw sleeve. The position of the tool in the front-back direction changes with the change of the adjusting frame. The second motor is started, and the tool moves left and right with the second ball screw sleeve. When the tool reaches the designated machining position, the third motor is started to drive the turntable to rotate. The turntable drives the tool below to rotate, and the first cylinder is started to extend downward. The tool moves downward to perform milling, drilling, boring, tapping and other processes on the designated machining position. Different processes correspond to different tools. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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. Among them:

[0018] Figure 1 This is a front-view three-dimensional structural diagram of an adjustable clamping mechanism for a machining center according to the present invention.

[0019] Figure 2 This is a three-dimensional cross-sectional view of the adjustment component of an adjustable clamping mechanism for a machining center according to the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the clamping component of an adjustable clamping mechanism for a machining center according to the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the fixing rod of an adjustable clamping mechanism for a machining center according to the present invention.

[0022] In the diagram: 1. Machining table; 2. Inner groove; 3. Tool magazine; 4. Adjustment assembly; 401. First motor; 402. First ball screw; 403. First ball sleeve; 404. Adjustment frame; 405. Second motor; 406. Second ball screw; 407. Second ball sleeve; 408. Fixing plate; 409. First cylinder; 410. Connecting plate; 411. Slide rod; 412. Slide sleeve; 5. Clamping assembly; 51. Third motor; 52. Turntable; 53. Fixing rod; 54. Sleeve rod; 55. Piston; 56. Second cylinder; 57. Ball; 58. Adjustment groove; 59. Tool. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0025] Meanwhile, the meaning of "and / or" or "the / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0026] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0027] like Figures 1-4 As shown in the figure, this embodiment provides an adjustable clamping mechanism for a machining center, including a machining table 1. An adjustment component 4 is provided on the upper end of the machining table 1. The adjustment component 4 includes an adjustment frame 404 provided on the upper end of the machining table 1. A fixing plate 408 is provided on one side of the upper outer wall of the adjustment frame 404. A first cylinder 409 is provided on the upper end of the fixing plate 408. A connecting plate 410 is provided on the extended end of the first cylinder 409. A clamping component 5 is provided on the lower end of the connecting plate 410. The clamping component 5 includes a third motor 51 provided on the lower end of the connecting plate 410. A turntable 52 is provided on the output end of the third motor 51. A fixing rod 53 is provided on the lower end of the turntable 52. A sleeve rod 54 is sleeved on the outer wall of the fixing rod 53. A piston 55 is inserted into the inner wall of the fixing rod 53. A second cylinder 56 is provided on the lower end of the turntable 52. Multiple sets of balls 57 are inserted into the lower outer wall of the fixing rod 53. An adjustment groove 58 that cooperates with the balls 57 is opened on the lower inner wall of the sleeve rod 54. A cutting tool 59 is inserted into the lower end of the fixing rod 53.

[0028] The upper end of the processing table 1 has an inner groove 2. A first motor 401 is installed on one side of the outer wall of the processing table 1. A first ball screw 402 is installed at the output end of the first motor 401. A first ball sleeve 403 is fitted on the outer wall of the first ball screw 402. The end of the first ball screw 402 away from the first motor 401 passes through the inner groove 2 and is rotatably connected to the inner wall of the inner groove 2. A slide rod 411 is fixedly installed inside the end of the inner groove 2 away from the first ball screw 402. A slide sleeve 412 is movably fitted on the outer wall of the slide rod 411. The slide sleeve 412 and the first ball screw 402 are connected to the inner wall of the inner groove 2. All ball sleeves 403 are movably inserted into the inner groove 2. The upper ends of the sliding sleeve 412 and the first ball sleeve 403 are fixedly connected to the adjusting frame 404. A second motor 405 is provided on the outer wall of the upper end of the adjusting frame 404. A second ball screw 406 is provided at the output end of the second motor 405. A second ball sleeve 407 is fitted on the outer wall of the second ball screw 406. The end of the second ball screw 406 away from the second motor 405 is rotatably connected to the inner wall of the adjusting frame 404. The second ball sleeve 407 is movably inserted into the inner wall of the upper end of the adjusting frame 404.

[0029] When a specific part of the workpiece on the upper end of the machining table 1 needs to be machined, starting the first motor 401 can drive the first ball screw 402 to rotate. The first ball sleeve 403 slides along the outer wall of the first ball screw 402 and the inner wall of the inner groove 2, so the adjusting frame 404 moves with the movement of the first ball sleeve 403. The position of the tool 59 in the front-back direction changes with the change of the adjusting frame 404. During this process, the sliding sleeve 412 slides along the outer wall of the sliding rod 411, making the movement of the adjusting frame 404 more stable. Then, starting the second motor... Machine 405 drives the second ball screw 406 to rotate, and the second ball sleeve 407 moves left and right along the outer wall of the second ball screw 406. As a result, the tool 59 moves left and right with the second ball sleeve 407. When the tool 59 reaches the designated machining position, the third motor 51 is started to drive the turntable 52 to rotate. The turntable 52 drives the tool 59 below to rotate, and the first cylinder 409 is started to extend downward. The tool 59 moves downward to perform milling, drilling, boring, tapping and other processes at the designated machining position. Different processes correspond to different tools 59.

[0030] The sleeve rod 54 is movably sleeved on the outer wall of the fixed rod 53. The inner wall of the sleeve rod 54 is fixedly provided with a slider, and the slider and piston 55 are fixedly connected. The outer wall of the fixed rod 53 is provided with a groove that cooperates with the slider, and the piston 55 is movably inserted into the inner wall of the fixed rod 53.

[0031] The extension end of the second cylinder 56 is fixedly connected to the lower outer wall of the sleeve rod 54. The upper interface of the cutter 59 is movably inserted into the inner wall of the fixed rod 53. The lower outer wall of the fixed rod 53 has a round hole that matches the ball 57. The ball 57 is movably inserted into the round hole. The adjusting groove 58 is shaped like a frustum with a narrow top and a wide bottom. The ball 57 can slide up and down along the inner wall of the adjusting groove 58.

[0032] Multiple tool magazines 3 are provided on one side of the upper end of the machining table 1. Multiple sets of tools 59 of different models are attached to the upper end of the tool magazines 3. By providing multiple tool magazines 3 on the upper end of the machining table 1, the tools 59 required for different processes can be placed on the upper end of the tool magazines 3, making it convenient to change the tools 59.

[0033] When it is necessary to change the tool 59, the clamping assembly 5 without the tool 59 installed is moved to the tool 59 placed on the upper end of the tool magazine 3 through the above steps. First, the first cylinder 409 is activated to drive the fixed rod 53 and the sleeve rod 54 to move downward, inserting the interface at the upper end of the tool 59 into the sleeve rod 54. Then, the second cylinder 56 is activated to extend downward, and the sleeve rod 54 slides downward along the outer wall of the fixed rod 53. The sleeve rod 54 drives the piston 55 to move downward along the inner wall of the fixed rod 53 through the slider, until the piston 55... The lower end of the sleeve 54 is in contact with the upper end of the cutter 59. As the piston 55 moves downward, the adjustment groove 58 at the lower end of the sleeve 54 slides down along the ball 57. The adjustment groove 58 is narrower at the top and wider at the bottom, so the ball 57 is squeezed. The ball 57 gradually moves along the round hole in the adjustment groove 58 towards the inner wall of the adjustment groove 58. When the ball 57 contacts the upper end of the cutter 59, the upper end of the cutter 59 is in contact with the lower end of the piston 55. Under the clamping and fixing of the ball 57, the cutter 59 is fixedly installed.

[0034] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. An adjustable clamping mechanism for a machining center, comprising a machining table (1), characterized in that: The upper end of the processing table (1) is provided with an adjustment assembly (4), which includes an adjustment frame (404) located on the upper end of the processing table (1). A fixing plate (408) is provided on one side of the upper outer wall of the adjustment frame (404), and a first cylinder (409) is provided on the upper end of the fixing plate (408). A connecting plate (410) is provided on the extended end of the first cylinder (409), and a clamping assembly (5) is provided on the lower end of the connecting plate (410). The clamping assembly (5) includes a third motor (51) located on the lower end of the connecting plate (410). The output end of the third motor (51) is provided with a turntable (52), the lower end of the turntable (52) is provided with a fixing rod (53), the outer wall of the fixing rod (53) is fitted with a sleeve rod (54), the inner wall of the fixing rod (53) is inserted with a piston (55), the lower end of the turntable (52) is provided with a second cylinder (56), the lower outer wall of the fixing rod (53) is inserted with multiple sets of balls (57), the lower inner wall of the sleeve rod (54) is provided with an adjustment groove (58) that cooperates with the balls (57), and the lower end of the fixing rod (53) is inserted with a cutting tool (59).

2. The adjustable clamping mechanism for a machining center according to claim 1, characterized in that: The processing table (1) has an inner groove (2) at its upper end. A first motor (401) is provided on one side of the outer wall of the processing table (1). A first ball screw (402) is provided at the output end of the first motor (401). A first ball screw sleeve (403) is fitted on the outer wall of the first ball screw (402). The end of the first ball screw (402) away from the first motor (401) passes through the inner groove (2) and is rotatably connected to the inner wall of the inner groove (2).

3. The adjustable clamping mechanism for a machining center according to claim 2, characterized in that: A slide rod (411) is fixedly provided inside the end of the inner groove (2) away from the first ball screw (402). A slide sleeve (412) is movably sleeved on the outer wall of the slide rod (411). The slide sleeve (412) and the first ball screw sleeve (403) are both movably inserted in the inner groove (2). The upper ends of the slide sleeve (412) and the first ball screw sleeve (403) are fixedly connected to the adjusting frame (404).

4. The adjustable clamping mechanism for a machining center according to claim 1, characterized in that: The upper outer wall of the adjusting frame (404) is provided with a second motor (405), the output end of the second motor (405) is provided with a second ball screw (406), the outer wall of the second ball screw (406) is fitted with a second ball sleeve (407), the end of the second ball screw (406) away from the second motor (405) is rotatably connected to the inner wall of the adjusting frame (404), and the second ball sleeve (407) is movably inserted into the upper inner wall of the adjusting frame (404).

5. The adjustable clamping mechanism for a machining center according to claim 1, characterized in that: The sleeve (54) is movably sleeved on the outer wall of the fixed rod (53). The inner wall of the sleeve (54) is fixedly provided with a slider, and the slider and piston (55) are fixedly connected. The outer wall of the fixed rod (53) is provided with a groove that cooperates with the slider. The piston (55) is movably inserted into the inner wall of the fixed rod (53).

6. The adjustable clamping mechanism for a machining center according to claim 1, characterized in that: The extension end of the second cylinder (56) is fixedly connected to the lower outer wall of the sleeve rod (54). The upper interface of the cutter (59) is movably inserted into the inner wall of the fixed rod (53). The lower outer wall of the fixed rod (53) has a round hole that matches the ball (57). The ball (57) is movably inserted into the round hole. The adjustment groove (58) is shaped like a frustum with a narrow top and a wide bottom. The ball (57) can slide up and down along the inner wall of the adjustment groove (58).

7. The adjustable clamping mechanism for a machining center according to claim 1, characterized in that: The upper side of the processing table (1) is provided with multiple sets of tool magazines (3), and multiple sets of different types of cutting tools (59) are attached to the upper end of the tool magazines (3).

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