Milling head replacing device of CNC machining center

Abstract

The utility model belongs to the technical field of CNC machining of digital accessories, and particularly relates to a milling head replacing device of a CNC machining center, which comprises a machining head, the bottom of the machining head is fixedly connected with a fixed seat, the bottom of the fixed seat is provided with a mounting groove, a milling head main body is inserted into the mounting groove, and the milling head main body is fixedly connected with the fixed seat. A fixing assembly is installed on the fixing base and the milling head body. The fixing assembly comprises a threaded connector, a fixing opening and two fixing baffles. The fastening bolt is rotationally inserted into the fixing opening by rotating the fastening bolt, so that the milling head main body is fixedly mounted, and the folding handle is reversely rotated to enable the fastening bolt to retreat from the fixing opening, so that the milling head main body can be taken out and replaced without a tool.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC machining of digital accessories, and specifically relates to a milling head replacement device for a CNC machining center. Background Technique

[0002] CNC machining generally refers to computer digital control precision machining, such as CNC machining lathes, CNC machining milling machines, CNC machining boring and milling machines, etc.

[0003] The milling head is one of the important accessories of the machine tool. It is a device that has a power source or can transmit the power source of the machine tool to drive the cutting tool for cutting. The milling head on the CNC gantry machine is usually fixed on the slide seat arranged on the gantry crossbeam by bolts, and the milling head needs to be removed during maintenance and replacement.

[0004] The existing Chinese patent with the publication number CN211101790U discloses a drilling and milling device for facilitating the replacement of a milling head in CNC machining of digital accessories, including a main body, a connecting column and fastening holes. A processing platform is arranged on the top of the main body. Among them, a support column is fixed on one side of the top of the processing platform, a control panel is installed on one side of the support column, a control box is fixed on the outside of the support column, an installation hole is arranged at the bottom of the installation column, a milling head is installed inside the installation hole, the fastening hole is arranged on the side of the installation column, a fastening bolt is installed inside the fastening hole, one end of the fastening bolt is fixed on the side of the milling head, and the other end of the fastening bolt is fixed with a fastening rod.

[0005] In view of the above and related existing technologies, the inventor believes that the following defects often exist: the fastening bolts of this device are easily loosened under the vibration of the machine during processing and other external forces, affecting the fixing effect of the milling head, and improvement is needed; therefore, a milling head replacement device for a CNC machining center is proposed for the above problems. Content of the Utility Model

[0006] In order to make up for the deficiencies of the existing technology and solve the above-mentioned technical problems, the utility model proposes a milling head replacement device for a CNC machining center.

[0007] The technical solution adopted by the present utility model to solve its technical problems is as follows: A milling head replacement device for a CNC machining center according to the present utility model includes a machining headstock. A fixed seat is fixedly connected to the bottom of the machining headstock. An installation groove is opened at the bottom of the fixed seat. A milling head body is inserted into the interior of the installation groove. A fixing component is installed on the fixed seat and the milling head body. The fixing component includes a threaded interface, a fixing opening, and two fixing baffles. The fixing opening is opened on the upper sidewall of the milling head body. The threaded interface is installed on the lower sidewall of the fixed seat. A fastening bolt is threadedly connected inside the threaded interface. One end of the fastening bolt is fixedly connected to a folding handle. The fixing baffles are located on both sides of the rotation trajectory of the folding handle and are fixedly connected to the fixed seat. During installation, the milling head body is inserted into the installation groove. By holding and rotating the folding handle to drive the fastening bolt to rotate and insert into the fixing opening, the fixed installation of the milling head body is realized. And by reversely rotating the folding handle to make the fastening bolt withdraw from the fixing opening, the milling head body can be taken out and replaced without the aid of tools. After the milling head body is installed, rotate the folding handle so that one end of it enters the fixing baffle, and the folding handle is limited by the fixing baffle to prevent the fastening bolt from rotating under the influence of external force and causing the connection to become loose.

[0008] Preferably, the folding handle includes an upper plate member and a lower plate body. The opposite ends of the upper plate member and the lower plate body are rotatably connected by a shaft. The upper plate member and the lower plate body are kept folded by the pulling force of a tension spring, thereby preventing detachment when inserted into the interior of the two fixing baffles and improving stability. When the folding handle needs to be used, rotate the upper plate member to make the upper plate member and the lower plate body perpendicular for convenient gripping by the user.

[0009] Preferably, a tension spring is fixedly connected to the opposite sides of the upper plate member and the lower plate body.

[0010] Preferably, a clamping block is fixedly connected to the bottom of the upper plate member.

[0011] Preferably, a clamping groove is fixedly connected to the top of the lower plate body. When the clamping block is inserted into the clamping groove, both sides of the clamping block are in contact with the inner wall of the clamping groove. When the upper plate member and the lower plate body are perpendicular, the clamping block is inserted into the interior of the clamping groove, which is used to transfer the force applied by the user when rotating the upper plate member to the lower plate body, avoiding excessive force on the shaft connection of the upper plate member and the lower plate body and causing damage.

[0012] Preferably, a positioning component is installed on the installation groove and the milling head body. The positioning component includes a connecting protrusion. The connecting protrusion is fixedly installed on the top of the milling head body, and a socket is opened on the surface of the connecting protrusion. Before installing the milling head body, insert the plug into the interior of the socket to achieve pre-assembly. Then, push the milling head body upward to make the telescopic rod contract to the shortest state. At this time, the fastening bolt is automatically aligned with the fixing opening, facilitating the docking installation of the two.

[0013] Preferably, the positioning component further includes a telescopic rod which is fixedly installed inside the installation groove, and a plug is fixedly connected to the side wall of the telescopic rod.

[0014] Preferably, a limiting convex layer is fixedly connected to the surface of the plug. When the telescopic rod is vertical, the connecting protrusion abuts against the limiting convex layer, so that the milling head body is located directly below the installation groove.

[0015] Preferably, a rubber anti-slip sleeve is fixedly connected to the surface of the plug. Due to the frictional force between the rubber anti-slip sleeve and the socket, when removing the milling head body, the milling head body can be hooked by the plug, effectively preventing the milling head body from accidentally falling due to careless holding during disassembly.

[0016] Preferably, a conical head is provided at one end of the plug to facilitate the insertion of the plug into the socket.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. In the present utility model, the milling head body is fixedly installed by rotating the fastening bolt and inserting it into the fixing port. By rotating the folding handle in the reverse direction to make the fastening bolt withdraw from the fixing port, the milling head body can be taken out and replaced without the aid of tools. After the installation of the milling head body is completed, rotate the folding handle so that one end of it enters the fixing baffle, and the folding handle is limited by the fixing baffle to prevent the fastening bolt from rotating due to external force and causing loosening of the connection.

[0019] 2. In the present utility model, pre-assembly is achieved by inserting the plug into the socket. Then, the milling head body is pushed upward to make the telescopic rod contract to the shortest state. At this time, the fastening bolt is automatically aligned with the fixing port, which facilitates the docking installation of the two. Moreover, when removing the milling head body, the milling head body is hooked by the plug, effectively preventing the milling head body from accidentally falling due to careless holding during disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 It is a cross-sectional view of the fixing seat of the present utility model;

[0023] Figure 3 It is a schematic diagram of the structure of the fixing component of the present utility model;

[0024] Figure 4 For the present utility model Figure 3 structural schematic diagram of A;

[0025] Figure 5 structural schematic diagram of the positioning component of the present utility model.

[0026] In the figure: 1, processing head; 2, fixed seat; 3, installation groove; 4, milling head body; 5, fixing component; 51, threaded interface; 52, fixing port; 53, folding handle; 54, fixing baffle; 55, fastening bolt; 531, upper plate member; 532, lower plate body; 533, tension spring; 534, clamping block; 535, clamping groove; 6, positioning component; 61, connecting protrusion; 62, socket; 63, telescopic rod; 64, plug; 65, limiting convex layer; 66, rubber anti-slip sleeve. Specific implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment 1

[0029] Please refer to Figures 1-4As shown in the figure, a milling head replacement device for a CNC machining center includes a machining head 1. A fixed seat 2 is fixedly connected to the bottom of the machining head 1. An installation groove 3 is opened at the bottom of the fixed seat 2. A milling head body 4 is inserted into the interior of the installation groove 3. A fixing component 5 is installed on the fixed seat 2 and the milling head body 4. The fixing component 5 includes a threaded interface 51, a fixing port 52, and two fixing baffles 54. The fixing port 52 is opened on the upper side wall of the milling head body 4. The threaded interface 51 is installed on the lower side wall of the fixed seat 2. A fastening bolt 55 is threadedly connected inside the threaded interface 51. One end of the fastening bolt 55 is fixedly connected to a folding handle 53. The fixing baffles 54 are located on both sides of the rotation trajectory of the folding handle 53, and the fixing baffles 54 are fixedly connected to the fixed seat 2. Connect the machining head 1 to the driving device of the CNC machining center to drive the milling head body 4. During installation, insert the milling head body 4 into the installation groove 3, and by holding and rotating the folding handle 53 to drive the fastening bolt 55 to rotate and insert into the fixing port 52, the fixed installation of the milling head body 4 is realized. By reversely rotating the folding handle 53 to make the fastening bolt 55 withdraw from the fixing port 52, the milling head body 4 can be taken out and replaced without the aid of tools. After the milling head body 4 is installed, rotate the folding handle 53 so that one end of it enters the fixing baffle 54, and limit the folding handle 53 through the fixing baffle 54 to prevent the fastening bolt 55 from rotating under the influence of external force and causing the connection to become loose.

[0030] The folding handle 53 includes an upper plate member 531 and a lower plate body 532. The opposite ends of the upper plate member 531 and the lower plate body 532 are rotationally connected by a shaft. The upper plate member 531 and the lower plate body 532 are kept folded by the pulling force of a tension spring 533, so as to prevent falling off when inserted into the two fixing baffles 54 and improve stability. When the folding handle 53 needs to be used, rotate the upper plate member 531 to make the upper plate member 531 and the lower plate body 532 perpendicular for the user to hold.

[0031] A tension spring 533 is fixedly connected to the opposite sides of the upper plate member 531 and the lower plate body 532.

[0032] A clamping block 534 is fixedly connected to the bottom of the upper plate member 531.

[0033] A clamping groove 535 is fixedly connected to the top of the lower plate body 532. When the clamping block 534 is inserted into the clamping groove 535, both sides of the clamping block 534 are attached to the inner wall of the clamping groove 535. When the upper plate member 531 and the lower plate body 532 are perpendicular, the clamping block 534 is inserted into the interior of the clamping groove 535, and is used to transmit the force applied by the user during rotation on the upper plate member 531 to the lower plate body 532, avoiding excessive force on the shaft connection of the upper plate member 531 and the lower plate body 532 and causing damage.

[0034] Embodiment Two

[0035] Compared with Embodiment One, please refer to Figure 5As shown in the figure, the present utility model provides another implementation manner. A positioning component 6 is installed on the mounting groove 3 and the milling head body 4. The positioning component 6 includes a connecting protrusion 61. The connecting protrusion 61 is fixedly installed on the top of the milling head body 4, and a socket 62 is formed on the surface of the connecting protrusion 61. Before installing the milling head body 4, the plug 64 is inserted into the socket 62 for pre-assembly. Subsequently, the milling head body 4 is pushed upward to make the telescopic rod 63 contract to the shortest state. At this time, the fastening bolt 55 is automatically aligned with the fixing port 52, facilitating the docking and installation of the two.

[0036] The positioning component 6 further includes a telescopic rod 63. The telescopic rod 63 is fixedly installed inside the mounting groove 3, and a plug 64 is fixedly connected to the side wall of the telescopic rod 63.

[0037] A limiting convex layer 65 is fixedly connected to the surface of the plug 64. When the telescopic rod 63 is vertical, the connecting protrusion 61 abuts against the limiting convex layer 65, so that the milling head body 4 is located directly below the mounting groove 3.

[0038] A rubber anti-slip sleeve 66 is fixedly connected to the surface of the plug 64. By the friction between the rubber anti-slip sleeve 66 and the socket 62, when removing the milling head body 4, the milling head body 4 is hung by the plug 64, effectively preventing the milling head body 4 from accidentally falling due to careless holding of the milling head body 4 during disassembly.

[0039] A tapered head is provided at one end of the plug 64 to facilitate the insertion of the plug 64 into the socket 62.

[0040] Working principle: Connect the processing head 1 to the driving device of the CNC machining center to drive the milling head body 4. During installation, insert the milling head body 4 into the mounting groove 3. By holding and rotating the folding handle 53, the fastening bolt 55 is rotated and inserted into the fixing port 52, thereby realizing the fixed installation of the milling head body 4. By rotating the folding handle 53 in the reverse direction, the fastening bolt 55 is withdrawn from the fixing port 52, and the milling head body 4 can be removed and replaced without using tools. After the milling head body 4 is installed, rotate the folding handle 53 so that one end of it enters the fixed baffle 54. The fixed baffle 54 limits the folding handle 53 to prevent the fastening bolt 55 from rotating due to external force and causing loosening of the connection.

[0041] The upper plate member 531 and the lower plate body 532 are kept folded by the tension of the tension spring 533, thereby preventing detachment when inserted into the two fixed baffles 54 and improving stability. When the folding handle 53 needs to be used, rotate the upper plate member 531 to make the upper plate member 531 and the lower plate body 532 perpendicular for easy holding by the user. When the upper plate member 531 and the lower plate body 532 are perpendicular, the locking block 534 is inserted into the card slot 535 to transmit the force applied by the user when rotating the upper plate member 531 to the lower plate body 532, avoiding excessive force on the shaft connection of the upper plate member 531 and the lower plate body 532 and causing damage.

[0042] Before installing the milling head body 4, insert the plug 64 into the inside of the socket 62 for pre-assembly. Then, push the milling head body 4 upward to contract the telescopic rod 63 to the shortest state. At this time, the fastening bolt 55 is automatically aligned with the fixing port 52, facilitating the docking and installation of the two. When removing the milling head body 4, hang the milling head body 4 through the plug 64, effectively preventing the accidental dropping of the milling head body 4 due to careless holding during disassembly.

[0043] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A milling head replacement device for a CNC machining center, comprising a machining head (1), characterized in that: The bottom of the processing machine head (1) is fixedly connected to a fixing seat (2), a mounting groove (3) is provided at the bottom of the fixing seat (2), a milling head body (4) is inserted into the inside of the mounting groove (3), a fixing assembly (5) is installed on the fixing seat (2) and the milling head body (4), the fixing assembly (5) comprises a threaded interface (51), a fixing port (52) and two fixing baffles (54), the fixing port (52) is provided on the upper side wall of the milling head body (4), the threaded interface (51) is installed on the lower side wall of the fixing seat (2), the inner thread of the threaded interface (51) is connected to a fastening bolt (55), one end of the fastening bolt (55) is fixedly connected to a folding handle (53), the fixing baffle (54) is located on both sides of the rotation track of the folding handle (53), and the fixing baffle (54) is fixedly connected to the fixing seat (2).

2. The milling head replacement device for a CNC machining center according to claim 1, characterized in that: The folding handle (53) comprises an upper plate (531) and a lower plate body (532), and opposite ends of the upper plate (531) and the lower plate body (532) are rotatably connected via a shaft.

3. The milling head replacement device for a CNC machining center according to claim 2, characterized in that: A tension spring (533) is fixedly connected to the opposite side of the upper plate (531) and the lower plate (532).

4. The milling head replacement device for a CNC machining center according to claim 2, characterized in that: A clamping block (534) is fixedly connected to the bottom of the upper plate (531).

5. The milling head replacement device for a CNC machining center according to claim 2, characterized in that: A slot (535) is fixedly connected to the top of the lower plate (532).

6. The milling head replacement device for a CNC machining center according to claim 1, characterized in that: A positioning assembly (6) is installed on the installation groove (3) and the milling head body (4), and the positioning assembly (6) comprises a connecting protrusion (61). The connecting protrusion (61) is fixedly installed on the top of the milling head body (4), and a socket (62) is provided on the surface of the connecting protrusion (61).

7. The milling head replacement device for a CNC machining center according to claim 6, characterized in that: The positioning assembly (6) further comprises a telescopic rod (63), wherein the telescopic rod (63) is fixedly mounted inside the mounting groove (3), and a plug (64) is fixedly connected to the side wall of the telescopic rod (63).

8. The milling head replacement device for a CNC machining center according to claim 7, characterized in that: A limiting convex layer (65) is fixedly connected to the surface of the plug (64).

9. The milling head replacement device for a CNC machining center according to claim 7, characterized in that: A rubber anti-slip sleeve (66) is fixedly connected to the surface of the plug (64).

10. The milling head replacement device for a CNC machining center according to claim 7, characterized in that: One end of the plug (64) is provided with a conical head.

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