Automatic tool changing device of numerical control machining center

Abstract

The utility model relates to the technical field of numerical control machining centers, and discloses an automatic tool changer of a numerical control machining center, which comprises a machine body and a tool. According to the automatic tool changing device of the numerical control machining center, by arranging a first displacement assembly, a second displacement assembly and a connecting assembly, a first electric push rod, a displacement plate and a second electric push rod are used in cooperation, so that a tool moves downwards to be inserted into a clamping groove of a tool rest, and a rectangular block and a rectangular limiting groove are matched for limiting; then through cooperative use of a second servo motor, a second gear and a first gear, a threaded sleeve rotates to be disconnected from a threaded shaft, then a second electric push rod drives a connecting assembly to move upwards, and then through cooperative use of a first servo motor, a threaded rod and a threaded block, the threaded sleeve rotates to be disconnected from the threaded shaft; and a second electric push rod drives a connecting assembly to move leftwards and move downwards, a threaded sleeve makes contact with a threaded shaft on a new tool, finally, a second servo motor is started to rotate reversely, connection is completed, manual tool changing is not needed, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machining centers, in particular to an automatic tool changing device for a numerical control machining center. Background Art

[0002] CNC machining center is a high-efficiency automated machine tool composed of mechanical equipment and CNC system, which is suitable for processing complex parts. CNC machining center is one of the most productive and widely used CNC machine tools in the world. It has strong comprehensive processing capabilities, can complete more processing content after the workpiece is clamped once, and has high processing accuracy. For batch workpieces with medium processing difficulty, its efficiency is 5 to 10 times that of ordinary equipment. In particular, it can complete processing that many ordinary equipment cannot complete, and is more suitable for single-piece processing with complex shapes and high precision requirements or small and medium-batch multi-variety production.

[0003] Traditional CNC machining centers still require manual tool changing, which not only increases the labor intensity of the staff, but also has relatively low work efficiency, and also increases certain risks. If you are not careful, it is easy for the tool to scratch yourself. Therefore, an automatic tool changing device for a CNC machining center is proposed to solve the above-mentioned technical problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an automatic tool changing device for a CNC machining center, which has the advantages of automatic tool changing, etc., and solves the problem that traditional CNC machining centers still need manual tool changing. Manual tool changing not only increases the labor intensity of staff, but also has relatively low work efficiency, and also increases certain risks. If you are not careful, the tool may easily scratch you.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of automatic tool change, the utility model provides the following technical solutions: an automatic tool change device for a CNC machining center, comprising a machine body and a tool, the top of the machine body is provided with a fixed vertical plate, the front side wall of the fixed vertical plate is provided with a fixed horizontal plate, the front side wall of the fixed vertical plate is provided with a tool holder located below the fixed horizontal plate, the bottom of the fixed horizontal plate is provided with a first displacement assembly, the bottom of the first displacement assembly is provided with a second displacement assembly, the bottom of the second displacement assembly is provided with a connecting assembly, the tool is located directly below the connecting assembly, and the top of the tool is provided with a threaded shaft connected to the inside of the connecting assembly;

[0008] The first displacement assembly includes a first electric push rod, two first electric push rods are disposed at the bottom of the fixed horizontal plate and are symmetrical to each other, and a displacement plate having one end fixedly connected to the output end of the first electric push rod on the right is disposed at the output end of the left first electric push rod;

[0009] The second displacement assembly includes a positioning plate, positioning plates are provided on both left and right sides of the bottom of the displacement plate, a threaded rod is provided between the two positioning plates, a threaded block is provided on the outside of the threaded rod, the top of the threaded block is connected to the bottom of the fixed horizontal plate, a rectangular plate is provided at the bottom of the threaded block, a second electric push rod is provided at the bottom of the rectangular plate, a connecting plate is provided at the output end of the second electric push rod, a first servo motor is provided on the right side wall of the positioning plate on the right side, and the output shaft of the first servo motor is connected to the right side wall of the threaded rod;

[0010] The connecting assembly includes a threaded sleeve, a threaded sleeve is arranged at the bottom of the connecting plate, a first gear is arranged outside the threaded sleeve, a second servo motor is arranged at the bottom of the connecting plate and located on the right side of the threaded sleeve, and a second gear meshing with the outside of the first gear is arranged at the output shaft of the second servo motor.

[0011] Preferably, a sliding groove adapted to the moving track of the displacement plate is provided at the bottom of the fixed transverse plate.

[0012] Preferably, the tool comprises a rectangular block and a tool body, the top of the tool body is fixedly connected with the rectangular block, and the threaded shaft is fixedly connected to the top of the rectangular block.

[0013] Preferably, the top of the tool holder is provided with three rectangular limiting grooves which are equally spaced from left to right, and the inner bottom wall of the rectangular limiting groove is connected with a circular through hole provided on the tool holder, and the circular through hole is adapted to the tool body.

[0014] Preferably, a moving groove adapted to the moving track of the threaded block is provided at the bottom of the displacement plate.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides an automatic tool changing device for a CNC machining center, which has the following beneficial effects:

[0017] The automatic tool changing device for a numerical control machining center is provided with a first displacement component, a second displacement component and a connecting component. The first electric push rod, the displacement plate and the second electric push rod are used in cooperation so that the tool moves downward and is inserted into the slot of the tool holder. The rectangular block and the rectangular limit slot are adapted to limit the position. Then, the threaded sleeve is rotated and disconnected from the threaded shaft by the cooperation of the second servo motor, the second gear and the first gear. Then, the second electric push rod drives the connecting component to move upward. Then, the first servo motor, the threaded rod and the threaded block are used in cooperation so that the second electric push rod drives the connecting component to move leftward and moves the connecting component downward so that the threaded sleeve contacts the threaded shaft on the new tool. Finally, the second servo motor is started to rotate in the opposite direction so that the threaded sleeve is connected to the threaded shaft. Manual tool change is not required, the danger of tool change is reduced and the practicality of the device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a front view and cross-sectional schematic diagram of the connection between the second displacement assembly and the connection assembly of the utility model;

[0020] Figure 3 For this utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0021] Figure 4 It is a partial front view and cross-sectional schematic diagram of the tool holder of the utility model.

[0022] In the figure: 1, machine body; 2, fixed vertical plate; 3, fixed horizontal plate; 4, tool holder; 5, tool; 6, threaded shaft; 7, first displacement assembly; 71, first electric push rod; 72, displacement plate; 8, second displacement assembly; 81, positioning plate; 82, threaded rod; 83, threaded block; 84, rectangular plate; 85, first servo motor; 86, second electric push rod; 87, connecting plate; 9, connecting assembly; 91, threaded sleeve; 92, first gear; 93, second servo motor; 94, second gear. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4, an automatic tool changing device for a CNC machining center, comprising a body 1 and a tool 5, a fixed vertical plate 2 is fixedly connected to the top of the body 1, a fixed horizontal plate 3 is fixedly connected to the front side wall of the fixed vertical plate 2, a tool holder 4 located below the fixed horizontal plate 3 is fixedly connected to the front side wall of the fixed vertical plate 2, a first displacement assembly 7 is movably connected to the bottom of the fixed horizontal plate 3, the first displacement assembly 7 comprises a first electric push rod 71, two first electric push rods 71 ​​which are symmetrical on the left and right are fixedly connected to the bottom of the fixed horizontal plate 3, a displacement plate 72 having one end fixedly connected to the output end of the first electric push rod 71 on the left is fixedly connected to the output end of the first electric push rod 71 on the right, and a slide groove which is adapted to the moving trajectory of the displacement plate 72 is provided at the bottom of the fixed horizontal plate 3.

[0025] The bottom of the first displacement assembly 7 is movably connected to the second displacement assembly 8, and the second displacement assembly 8 includes a positioning plate 81. The left and right sides of the bottom of the displacement plate 72 are fixedly connected with positioning plates 81. A threaded rod 82 is rotatably connected between the two positioning plates 81. The external thread of the threaded rod 82 is connected with a threaded block 83. The bottom of the displacement plate 72 is provided with a moving groove adapted to the moving trajectory of the threaded block 83. The top of the threaded block 83 is slidably connected to the bottom of the fixed cross plate 3. The bottom of the threaded block 83 is fixedly connected to a rectangular plate 84. The bottom of the rectangular plate 84 is fixedly connected to a second electric push rod 86. The output end of the second electric push rod 86 is fixedly connected to a connecting plate 87. The right side wall of the right positioning plate 81 is fixedly connected to a first servo motor 85. The output shaft of the first servo motor 85 is fixedly connected to the right side wall of the threaded rod 82.

[0026] The bottom of the second displacement component 8 is movably connected with a connecting component 9, and the tool 5 is located directly below the connecting component 9. The top of the tool 5 is fixedly connected with a threaded shaft 6 that is threadedly connected to the inside of the connecting component 9. The tool 5 includes a rectangular block and a tool body. The top of the tool body is fixedly connected with a rectangular block, and the threaded shaft 6 is fixedly connected to the top of the rectangular block. The top of the tool holder 4 is provided with three rectangular limiting grooves that are equidistantly distributed on the left and right. The inner bottom wall of the rectangular limiting groove is connected with a circular through hole provided on the tool holder 4, and the circular through hole is adapted to the tool body. The connecting component 9 includes a threaded sleeve 91, and the bottom of the connecting plate 87 is rotatably connected with the threaded sleeve 91, and the outside of the threaded sleeve 91 is fixedly connected with a first gear 92, and the bottom of the connecting plate 87 is fixedly connected with a second servo motor 93 located on the right side of the threaded sleeve 91, and the output shaft of the second servo motor 93 is fixedly connected with a second gear 94 that meshes with the outside of the first gear 92.

[0027] When in use, the first electric push rod 71 is started to drive the displacement plate 72 and the tool 5 to move backward, and then the second electric push rod 86 drives the tool 5 to move downward so that it is inserted into the slot of the tool holder 4, and the rectangular block and the rectangular limit groove are adapted to limit. At this time, the second servo motor 93 is started to drive the second gear 94 to rotate through the output shaft. Under the cooperation of the second gear 94 and the first gear 92, the threaded sleeve 91 rotates and disconnects from the threaded shaft 6, and then the second electric push rod 86 drives the connecting assembly 9 to move upward, and then the first servo motor 85 is started to drive the threaded rod 82 to rotate through the output shaft, so that the threaded block 83 drives the second electric push rod 86 to move to the left, and then the second electric push rod 86 drives the connecting assembly 9 to move downward, so that the threaded sleeve 91 contacts the threaded shaft 6 on the new tool, and finally the second servo motor 93 is started to rotate in the opposite direction, so that the threaded sleeve 91 is connected to the threaded shaft 6, and the tool change is completed.

[0028] It is worth noting that the first electric push rod 71, the first servo motor 85, the second electric push rod 86 and the second servo motor 93 appearing in the present application document are all externally connected to a control switch and a driving power supply, and the first electric push rod 71, the first servo motor 85, the second electric push rod 86 and the second servo motor 93 are all conventionally known equipment, and the standard parts used in the present application document can be purchased from the market. The specific connection method of each part is connected by conventional means such as mature bolts, rivets, welding, etc. in the prior art, and the machinery, parts and equipment are all conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art. The contents not described in detail in the description belong to the prior art known to professional and technical personnel in this field, and will not be described in detail here.

[0029] In summary, the automatic tool changing device of the CNC machining center is provided with the first displacement assembly 7, the second displacement assembly 8 and the connecting assembly 9, and the first electric push rod 71, the displacement plate 72 and the second electric push rod 86 are used in cooperation, so that the tool 5 moves down and is inserted into the slot of the tool holder 4, the rectangular block and the rectangular limit groove are adapted to limit, and then the threaded sleeve 91 is rotated and disconnected from the threaded shaft 6 by the cooperation of the second servo motor 93, the second gear 94 and the first gear 92, and then the second electric push rod 86 drives the connecting assembly 9 to move up, and then the first servo motor 85, the threaded rod 82 and the threaded block 83 are driven to rotate. The second electric push rod 86 drives the connecting assembly 9 to move to the left and move the connecting assembly 9 downward, so that the threaded sleeve 91 contacts the threaded shaft 6 on the new tool, and finally the second servo motor 93 is started to rotate in the opposite direction, so that the threaded sleeve 91 is connected to the threaded shaft 6. There is no need to manually change the tool, which reduces the risk of tool changing and improves the practicality of the device. It solves the problem that traditional CNC machining centers still need to perform manual tool changing. Manual tool changing not only increases the labor intensity of the staff, but also has relatively low work efficiency and increases certain risks. If you are not careful, the tool may easily scratch yourself.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic tool changing device for a CNC machining center, comprising a body (1) and a tool (5), characterized in that: The top of the machine body (1) is provided with a fixed vertical plate (2), the front side wall of the fixed vertical plate (2) is provided with a fixed horizontal plate (3), the front side wall of the fixed vertical plate (2) is provided with a tool holder (4) located below the fixed horizontal plate (3), the bottom of the fixed horizontal plate (3) is provided with a first displacement assembly (7), the bottom of the first displacement assembly (7) is provided with a second displacement assembly (8), the bottom of the second displacement assembly (8) is provided with a connecting assembly (9), the tool (5) is located directly below the connecting assembly (9), and the top of the tool (5) is provided with a threaded shaft (6) connected to the inside of the connecting assembly (9); The first displacement assembly (7) comprises a first electric push rod (71), two first electric push rods (71) being symmetrical on the left and right are arranged at the bottom of the fixed horizontal plate (3), and a displacement plate (72) having one end fixedly connected to the output end of the first electric push rod (71) on the right is arranged at the output end of the left first electric push rod (71); The second displacement assembly (8) comprises a positioning plate (81), positioning plates (81) are arranged on both left and right sides of the bottom of the displacement plate (72), a threaded rod (82) is arranged between the two positioning plates (81), a threaded block (83) is arranged outside the threaded rod (82), the top of the threaded block (83) is connected to the bottom of the fixed horizontal plate (3), a rectangular plate (84) is arranged at the bottom of the threaded block (83), a second electric push rod (86) is arranged at the bottom of the rectangular plate (84), a connecting plate (87) is arranged at the output end of the second electric push rod (86), a first servo motor (85) is arranged on the right side wall of the right positioning plate (81), and the output shaft of the first servo motor (85) is connected to the right side wall of the threaded rod (82); The connecting assembly (9) comprises a threaded sleeve (91), the threaded sleeve (91) is arranged at the bottom of the connecting plate (87), a first gear (92) is arranged outside the threaded sleeve (91), a second servo motor (93) is arranged at the bottom of the connecting plate (87) and is located on the right side of the threaded sleeve (91), and a second gear (94) meshing with the outside of the first gear (92) is arranged at the output shaft of the second servo motor (93).

2. The automatic tool changing device for a CNC machining center according to claim 1, characterized in that: The bottom of the fixed transverse plate (3) is provided with a sliding groove adapted to the moving track of the displacement plate (72).

3. The automatic tool changing device for a CNC machining center according to claim 1, characterized in that: The tool (5) comprises a rectangular block and a tool body, the top of the tool body is fixedly connected to the rectangular block, and the threaded shaft (6) is fixedly connected to the top of the rectangular block.

4. The automatic tool changing device for a CNC machining center according to claim 1, characterized in that: The top of the tool holder (4) is provided with three rectangular limiting grooves which are equally spaced from left to right. The inner bottom wall of the rectangular limiting groove is connected to a circular through hole provided on the tool holder (4), and the circular through hole is adapted to the tool body.

5. The automatic tool changing device for a CNC machining center according to claim 1, characterized in that: The bottom of the displacement plate (72) is provided with a moving groove adapted to the moving track of the threaded block (83).

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