Tool changing structure of numerical control machining center

Abstract

The tool changing structure of the numerical control machining center comprises a disc type tool magazine frame, a tool bit containing groove is formed in the edge position in the disc type tool magazine frame, a tool bit is arranged in the tool bit containing groove, a clamping groove is formed in the upper portion of the periphery of the tool bit, and a clamping groove is formed in the lower portion of the periphery of the clamping groove. The tool changing frame body is arranged at the front end position under the disc type tool magazine frame, a limiting plate is arranged at the front end of the tool changing frame body, an adjustable support is arranged on the upper portion of the interior of the tool changing frame body, a tool bit taking and placing clamp is arranged at the top end of the adjustable support, and a clamping head is arranged on the inner wall of the tool bit taking and placing clamp. The tool bit taking and placing clamp is arranged at the top end of the adjustable support, the adjustable support is turned over and adjusted in a gear transmission mode so that the adjustable support can be adjusted upwards or downwards, when the adjustable support is turned over upwards, the adjustable support is parallel to the disc type tool magazine frame, and a tool bit can be conveniently taken and placed in the disc type tool magazine frame.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining centers, specifically a tool changing structure for CNC machining centers. Background Technology

[0002] A CNC machining center is a type of CNC machine tool with a wide range of functions. It is one of the world's most produced and widely used CNC machine tools. A CNC machining center is a CNC machine tool equipped with a tool magazine and capable of automatic tool changing. It can perform a variety of machining operations on the workpiece within a certain range. A CNC machining center is a high-efficiency automated machine tool suitable for machining complex parts, consisting of mechanical equipment and a CNC system.

[0003] The existing tool changing mechanism for CNC machining centers still has certain shortcomings in use. Traditional tool changing mechanisms usually move and adjust the tool changing mechanism by sliding when installing the tool head and tool holder. If there is a deviation in the fit of the sliding components, the position of the tool head and tool holder will be deviated, resulting in a slight skew in the installation position of the tool head and reducing the accuracy of part machining. Utility Model Content

[0004] The purpose of this utility model is to provide a tool changing structure for CNC machining centers, in order to solve the problem mentioned in the background art that the traditional tool changing mechanism usually moves and adjusts the tool changing mechanism by sliding when installing the tool head and tool holder. If there is a deviation in the fit of the sliding component, the position of the tool head and tool holder will be deviated, resulting in a slight skew in the installation position of the tool head, which reduces the accuracy of part machining.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tool changing structure for a CNC machining center, comprising a disc-type tool magazine holder and a tool changing frame body. The disc-type tool magazine holder has a tool head placement groove at its inner edge, a tool head is placed inside the tool head placement groove, and a slot is provided above the outer periphery of the tool head. The tool changing frame body is located at the front end directly below the disc-type tool magazine holder. A limiting plate is provided at the front end of the tool changing frame body. An adjustable bracket is provided at the upper interior of the tool changing frame body. A tool head pick-and-place fixture is provided at the top of the adjustable bracket, and a chuck is provided on the inner wall of the tool head pick-and-place fixture. Fixed guard plates are provided on both sides of the tool changing frame body. A base is provided at the bottom end of the fixed guard plates. A dual-axis cylinder is provided in the middle of the interior of the base. Mounting screw holes are provided on both sides of the base. Fixed frames are provided on both sides of the bottom surface of the tool changing frame body, and an electric telescopic rod is provided inside the fixed frames.

[0006] In a further embodiment, the tool head pick-up and drop clamp is fixedly connected to the tool head by a clamp and a slot, the tool head is fixedly connected to the tool head placement slot by a plug, and the tool head placement slot is fixedly connected to the disc-shaped tool magazine frame by bolts.

[0007] In a further embodiment, the blade pick-and-place fixture is connected to the adjustable bracket via a mounting block, and the mounting block and the adjustable bracket are fixedly connected via fixing screws.

[0008] In a further embodiment, the bottom end of the adjustable bracket is connected to the interior of the tool changer body via a gear and rack transmission, and the gear and the adjustable bracket are fixedly connected by a fixing pin.

[0009] In a further embodiment, one end of the bottom of the rack is fixedly connected to the electric telescopic rod via a connecting plate, and the rack is slidably connected to the bottom of the tool changer body.

[0010] In a further embodiment, the two sides of the tool changer body are slidably connected to the fixed guard plate via positioning sliders and positioning grooves, and the bottom of the tool changer body is fixedly connected to the dual-axis cylinder via bolts, and the two sides of the bottom of the tool changer body are slidably connected to the base via guide rods.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the tool head pick-and-place clamp is located at the top of an adjustable bracket, and the adjustable bracket is flipped and adjusted using gear transmission, allowing it to be adjusted upwards or downwards. When the adjustable bracket is flipped upwards, it is parallel to the disc-type tool magazine, facilitating the pick-and-place operation of the tool head from the disc-type tool magazine. When the adjustable bracket is flipped downwards, it is perpendicular to the tool holder, facilitating the disassembly and assembly of the tool head and the tool holder. This structure eliminates the need to move the tool changer body during tool changing, restricts the adjustment position of the tool changer body, ensures that the tool head is always in the same position, avoids deviations in the tool changing position, has a simple structure, occupies a small area, and is easier to operate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the tool changing structure of a CNC machining center according to the present invention;

[0014] Figure 2 This is a schematic diagram of the internal structure of the base of this utility model;

[0015] Figure 3 This is a side view of a tool changing structure of a CNC machining center according to the present invention;

[0016] Figure 4 This is a schematic diagram of the adjustable bracket of this utility model;

[0017] Figure 5 This is a front view of the blade of this utility model;

[0018] Figure 6 This is a schematic diagram of the cross-sectional structure of the tool changer body of this utility model.

[0019] In the diagram: 1. Disc-type tool magazine holder; 2. Tool head placement slot; 3. Tool head loading and unloading clamp; 4. Fixing screw; 5. Adjustable bracket; 6. Limiting plate; 7. Tool changer body; 8. Base; 9. Dual-axis cylinder; 10. Guide rod; 11. Chuck; 12. Fixing guard plate; 13. Electric telescopic rod; 14. Fixing frame; 15. Mounting screw; 16. Positioning slide; 17. Positioning slider; 18. Connecting plate; 19. Mounting block; 20. Tool head; 21. Gear; 22. Rack; 23. Fixing pin; 24. Chuck. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figure 1-6 This utility model provides an embodiment of a tool changing structure for a CNC machining center, comprising a disc-type tool magazine holder 1 and a tool changing frame body 7. The disc-type tool magazine holder 1 has a tool head placement groove 2 at its inner edge, a tool head 20 inside the tool head placement groove 2, and a slot 24 above the outer periphery of the tool head 20. The tool changing frame body 7 is located at the front end directly below the disc-type tool magazine holder 1. A limiting plate 6 is provided at the front end of the tool changing frame body 7. An adjustable bracket 5 is provided at the upper part of the interior of the tool changing frame body 7. A tool head pick-and-place clamp 3 is provided at the top of the adjustable bracket 5. A clamp 11 is provided on the inner wall of the tool head pick-and-place clamp 3. Fixed guard plates 12 are provided on both sides of the tool changing frame body 7. A base 8 is provided at the bottom end of the fixed guard plates 12. A dual-axis cylinder 9 is provided in the middle of the interior of the base 8. Mounting screw holes 15 are provided on both sides of the base 8. Fixed frames 14 are provided on both sides of the bottom surface of the tool changing frame body 7. An electric telescopic rod 13 is provided inside the fixed frames 14.

[0022] The tool head placement slot 2 is used to store and fix different types of tool heads 20. The tool heads 20 are used for cutting and machining parts. The tool changer body 7 is used to replace and install the tool heads 20. The limiting plate 6 is used to limit and position the downward flip position of the adjustable bracket 5. The adjustable bracket 5 is used to install and fix the tool head pick-up and drop clamp 3. The tool head pick-up and drop clamp 3 is used to clamp and fix the tool heads 20. The fixed guard plate 12 is used to protect and fix both sides of the tool changer body 7. The base 8 is used to increase the stability of the tool changer body 7. The dual-axis cylinder 9 is used to adjust the height of the tool changer body 7. The fixed frame 14 is used to hide and install the electric telescopic rod 13. The electric telescopic rod 13 is used to adjust the telescopic movement of the rack 22.

[0023] Furthermore, the tool head pick-up and drop clamp 3 and the tool head 20 are fixedly connected by the clamp head 11 and the clamp slot 24, and the tool head 20 and the tool head placement slot 2 are fixedly connected by the insertion, and the tool head placement slot 2 and the disc-type tool magazine frame 1 are fixedly connected by bolts.

[0024] The connection between the clamp 11 and the slot 24 facilitates the connection and fixation of the cutter head pick-up and drop clamp 3 and the cutter head 20.

[0025] Furthermore, the blade pick-and-place clamp 3 and the adjustable bracket 5 are connected by the mounting block 19, and the mounting block 19 and the adjustable bracket 5 are fixedly connected by the fixing screw 4.

[0026] The mounting block 19 is used to connect and fix the blade pick-and-place clamp 3 to the adjustable bracket 5, and the fixing screw 4 is used to fix the position of the connection between the mounting block 19 and the adjustable bracket 5.

[0027] Furthermore, the bottom end of the adjustable bracket 5 is connected to the inside of the tool changer body 7 via a gear 21 and a rack 22, and the gear 21 is fixedly connected to the adjustable bracket 5 via a fixing pin 23.

[0028] The connection between gear 21 and rack 22 makes the rotation adjustment of adjustable bracket 5 more stable.

[0029] Furthermore, one end of the bottom of the rack 22 is fixedly connected to the electric telescopic rod 13 through the connecting plate 18, and the rack 22 is slidably connected to the bottom of the tool changer body 7.

[0030] The connecting plate 18 is used to install and connect one end of the bottom of the rack 22 to the electric telescopic rod 13.

[0031] Furthermore, the two sides of the tool changer body 7 are slidably connected to the fixed guard plate 12 via the positioning slider 17 and the positioning groove 16, and the bottom of the tool changer body 7 is fixedly connected to the dual-axis cylinder 9 via bolts, and the two sides of the bottom of the tool changer body 7 are slidably connected to the base 8 via the guide rod 10.

[0032] The positioning slider 17 is connected to the positioning groove 16 to ensure the stability of the tool changer body 7 during lifting.

[0033] Working principle: In use, the height of the adjustable bracket 5 is set according to the distance between the disc-type tool magazine holder 1 and the tool holder on the CNC machining equipment. The tool changer body 7 is installed at one end of the machining table, so that the upward flipping position of the tool head pick-up and drop fixture 3 is aligned with the position of the slot 24 on the tool head 20 in the tool head placement groove 2, and the downward flipping position of the tool head pick-up and drop fixture 3 is aligned with the position of the tool holder. The base 8 is fixed to the machining table with bolts. The required tool head 20 model is set through the control panel, and the disc-type tool magazine holder 1... Adjust the required type of cutter head 20 to the position directly below. Use the dual-axis cylinder 9 to raise the tool changer body 7 upwards, so that the cutter head pick-up and drop clamp 3 is inserted into the cutter head 20. Use the electric telescopic rod 13 to move the rack 22. Through the transmission between the rack 22 and the gear 21, the adjustable bracket 5 is flipped downwards, and the cutter head 20 is pulled out from the cutter head placement slot 2, so that the cutter head 20 is aligned with the position of the tool sleeve. Use the limiting plate 6 to limit and position the flipped position. Lower and adjust the tool sleeve so that the cutter head 20 is inserted and fixed in the tool sleeve.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A tool changing structure for a CNC machining center, comprising a disc-type tool magazine holder (1) and a tool changing holder body (7), characterized in that: The disc-shaped tool magazine holder (1) has a tool head placement groove (2) at its inner edge, and a tool head (20) is placed inside the tool head placement groove (2). A slot (24) is provided above the outer periphery of the tool head (20). The tool changer body (7) is located at the front end directly below the disc-shaped tool magazine holder (1). A limiting plate (6) is provided at the front end of the tool changer body (7). An adjustable bracket (5) is provided above the inner part of the tool changer body (7). A tool is placed at the top of the adjustable bracket (5). The tool head pick-up and drop clamp (3) has a chuck (11) on its inner wall. The tool changer body (7) has fixed guard plates (12) on both sides. The bottom of the fixed guard plate (12) has a base (8). The middle position inside the base (8) has a double-axis cylinder (9). The two sides of the base (8) have mounting screw holes (15). The two sides of the bottom surface of the tool changer body (7) have fixed frames (14). The inside of the fixed frames (14) has an electric telescopic rod (13).

2. The tool changing structure of a CNC machining center according to claim 1, characterized in that: The blade pick-and-place clamp (3) and the blade (20) are fastened together by a clamp (11) and a slot (24), and the blade (20) and the blade placement slot (2) are fastened together by a plug, and the blade placement slot (2) and the disc-type blade magazine frame (1) are fastened together by bolts.

3. The tool changing structure of a CNC machining center according to claim 1, characterized in that: The blade pick-and-place clamp (3) and the adjustable bracket (5) are connected by a mounting block (19), and the mounting block (19) and the adjustable bracket (5) are fixedly connected by a fixing screw (4).

4. The tool changing structure of a CNC machining center according to claim 1, characterized in that: The bottom end of the adjustable bracket (5) is connected to the inside of the tool changer body (7) by a gear (21) and a rack (22), and the gear (21) and the adjustable bracket (5) are fixedly connected by a fixing pin (23).

5. The tool changing structure of a CNC machining center according to claim 4, characterized in that: One end of the bottom of the rack (22) is fixedly connected to the electric telescopic rod (13) through the connecting plate (18), and the rack (22) is slidably connected to the bottom of the tool changer body (7).

6. The tool changing structure of a CNC machining center according to claim 1, characterized in that: The two sides of the tool changer body (7) are slidably connected to the fixed guard plate (12) through the positioning slider (17) and the positioning groove (16), and the bottom of the tool changer body (7) is fixedly connected to the dual-axis cylinder (9) by bolts, and the two sides of the bottom of the tool changer body (7) are slidably connected to the base (8) through the guide rod (10).

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