Automatic tool changer for machining center

Abstract

The application provides a machining center automatic tool changer, and relates to the technical field of machining centers.The machining center body is provided with a mounting head on the surface thereof.A mounting hole is formed in the surface of the mounting head.A tool changing structure is arranged on the surface of the mounting head.The tool changing structure comprises two reserved grooves formed in the side wall of the mounting head.The reserved grooves are connected with the mounting hole.A connecting frame is fixedly connected to the side wall of the mounting head.Two slide strips are fixedly connected to the side wall of the connecting frame.Press frames are slidingly connected to the side wall of the two slide strips.The press frames are located on the inner side of the reserved grooves.A sliding groove is formed in the inner side of the connecting frame.A push frame is slidingly connected to the inner wall of the sliding groove.The tool changing structure is arranged to facilitate the full-automatic replacement of the tool.The worker only needs to insert the mounting position of the tool into the inner side of the mounting hole to replace the tool, thereby improving the replacement efficiency of the tool to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of machining center technology, specifically to an automatic tool changer for machining centers. Background Technology

[0002] A machining center is a highly automated CNC machine tool, typically equipped with a tool magazine and automatic tool changer. Its core is a computer numerical control system that enables continuous machining across multiple processes and stations. It can automatically complete various cutting operations such as milling, drilling, boring, and tapping. It can perform high-precision, high-efficiency, and high-consistency batch or single-piece machining of complex parts made of metal, plastic, and other materials. It is widely used in precision manufacturing fields such as aerospace, automobile manufacturing, and mold processing, and is a core piece of equipment in modern flexible manufacturing systems.

[0003] An automatic tool changer for a machining center, disclosed in CN104816186B, includes a machining center housing, a cutting tool, a first electric push rod, a first electromagnet, a second electromagnet, a second electric push rod, a lead screw, a lead screw nut, a bearing housing, a second cylinder, a tool exit point, a fourth electromagnet, a coupling, a support plate, a motor, a third electromagnet, and the first cylinder. The motor is installed inside the machining center housing and is connected to the machining center's control system via wires. The motor is connected to the lead screw via a coupling, and a support plate is mounted on the coupling. The fourth electromagnet is mounted on the support plate and is connected to the machining center's control system via wires. The advantage of this invention is that the connection between the cutting tool and the rotating device is less prone to wear.

[0004] However, the aforementioned patents and existing technologies still have the following drawbacks: When changing tools in a machining center, traditional tool changing methods require the use of screws and other disassembly methods to disassemble and assemble the tools. This tool changing method requires the use of external tools and takes a long time to complete the tool replacement work, thus reducing the efficiency of tool replacement. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of low tool changing efficiency in existing technologies by proposing an automatic tool changer for machining centers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic tool changer for a machining center, comprising a machining center body, a mounting head mounted on the surface of the machining center body, a mounting hole formed on the surface of the mounting head, a tool changing structure formed on the surface of the mounting head, the tool changing structure comprising two reserved grooves formed on the side wall of the mounting head, the reserved grooves communicating with the mounting hole, a connecting frame fixedly connected to the side wall of the mounting head, two slide bars fixedly connected to the side wall of the connecting frame, a pressure frame slidably connected to the side wall of each of the two slide bars, the pressure frame being located inside the reserved groove, a sliding groove formed on the inner side of the connecting frame, a push frame slidably connected to the inner wall of the sliding groove, the push frame having a V-shaped structure.

[0007] The effect achieved by the above-mentioned components is as follows: by setting up a tool changing structure, it facilitates the fully automatic replacement of tools. The operator only needs to insert the tool installation position into the installation hole to replace the tool, which improves the tool replacement efficiency to a certain extent.

[0008] Preferably, the connecting frame is internally rotatably connected to a lead screw, and the lead screw is internally threadedly connected to the push frame.

[0009] The effect achieved by the above components is: to drive the lead screw to rotate, and the push frame, which is threadedly connected to the lead screw, slides along the groove on the inner side of the connecting frame.

[0010] Preferably, a first motor is fixedly mounted on the surface of the connecting frame, and the output end of the first motor is fixedly connected to the end side of the lead screw.

[0011] The effect achieved by the above components is: to start the first motor, which in turn drives the lead screw to rotate.

[0012] Preferably, a first spring is fixedly installed between the connecting frame and the pressure frame.

[0013] The effect achieved by the above components is that the first spring always provides elastic support.

[0014] Preferably, anti-slip pads are glued to the sides of the two pressure frames that are close to each other.

[0015] The effect achieved by the above components is that the anti-slip pad on the inside of the pressure frame can increase friction and prevent the tool from loosening during processing.

[0016] Preferably, a receiving structure is fixedly connected to the side wall of the machining center body. The receiving structure includes a mounting frame fixedly connected to the side wall of the machining center body. A second motor is fixedly installed on the inner side of the mounting frame. A rotating shaft is fixedly installed on the output end of the second motor. A rotating plate is fixedly installed on the upper end of the rotating shaft. A rotating pin is rotatably connected inside the rotating plate. A rectangular frame is fixedly connected to the end of the rotating pin. A support cloth is fixedly installed on the inner side of the rectangular frame.

[0017] The effect achieved by the above components is as follows: by setting up a receiving structure, the rectangular frame and the support cloth are rotated to a position below the mounting hole. During the automatic disassembly of the tool, the tool will fall on the support cloth, which facilitates the automatic collection of the tool when it is replaced, and further improves the efficiency of tool replacement.

[0018] Preferably, the surface of the pivot pin is provided with a locking structure, the locking structure includes a pivot block fixedly connected to the end side of the pivot pin, the internal sliding pin of the pivot block has a pin, the side wall of the pivot plate has an insertion hole, and the size of the pin and the size of the insertion hole are adapted to each other.

[0019] The effect achieved by the above-mentioned components is as follows: by setting a locking structure, after the pin is pulled out from the inside of the insertion hole, the pin can be rotated, thereby realizing the dumping of the stockpiled tools, which facilitates the centralized dumping of the stockpiled tools and improves the processing efficiency of the stockpiled tools to a certain extent.

[0020] Preferably, a stop is fixedly connected to the end of the pin.

[0021] The effect achieved by the above components is that the stop makes it easier to pull the pin.

[0022] Preferably, a second spring is fitted onto the surface of the pin, and the two ends of the second spring are fixedly connected to the stop block and the rotating block, respectively.

[0023] The effect achieved by the above components is that the second spring drives the pin to reset and insert into the socket through the stop block.

[0024] Preferably, an auxiliary head is fixedly connected to the end of the pin away from the stop block, and the auxiliary head is a frustum-shaped structure.

[0025] The effect achieved by the above-mentioned components is that the frustum-shaped auxiliary head improves the efficiency of inserting the pin into the inner side of the socket.

[0026] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0027] 1. In this invention, by setting up a tool changing structure, the fully automatic tool changing operation is facilitated. The operator only needs to insert the tool installation position into the installation hole to change the tool, which improves the tool changing efficiency to a certain extent.

[0028] 2. In this invention, by setting a receiving structure, the rectangular frame and the support cloth are rotated to a position below the mounting hole. During the automatic disassembly of the tool, the tool will fall on the support cloth, which facilitates the automatic collection of the tool when it is replaced and further improves the efficiency of tool replacement.

[0029] 3. In this invention, by setting a locking structure, after the pin is pulled out from the inside of the insertion hole, the pin can be rotated, thereby realizing the dumping of the stockpiled tools, which facilitates the centralized dumping of the stockpiled tools and improves the processing efficiency of the stockpiled tools to a certain extent. Attached Figure Description

[0030] Figure 1 This invention provides a three-dimensional structural schematic diagram of an automatic tool changer for a machining center;

[0031] Figure 2 This invention provides another structural schematic diagram of an automatic tool changer for a machining center.

[0032] Figure 3 This invention proposes an automatic tool changer for machining centers. Figure 2 Another structural diagram from a different angle;

[0033] Figure 4 This invention proposes an automatic tool changer for machining centers. Figure 1 Enlarged view of point A;

[0034] Figure 5 This invention provides a schematic diagram of the receiving structure in an automatic tool changer for a machining center.

[0035] Figure 6 This invention proposes an automatic tool changer for machining centers. Figure 5 Enlarged view of point B;

[0036] Figure 7 This invention proposes an automatic tool changer for machining centers. Figure 5 Enlarged view of point C.

[0037] Legend: 1. Machining center body; 2. Mounting head; 3. Mounting hole; 4. Tool changing structure; 401. Connecting frame; 402. Push frame; 403. Lead screw; 404. First motor; 405. Pressure frame; 406. Anti-slip pad; 407. First spring; 408. Reserved slot; 409. Sliding bar; 410. Sliding groove; 5. Receiving structure; 51. Mounting frame; 52. Second motor; 53. Rotating shaft; 54. Rotating plate; 55. Support cloth; 56. Rectangular frame; 57. Turning pin; 6. Locking structure; 61. Rotating block; 62. Insert pin; 63. Stop block; 64. Second spring; 65. Insertion hole; 66. Auxiliary head. Detailed Implementation

[0038] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0039] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0040] Example 1, such as Figure 1-7 As shown, the present invention provides an automatic tool changer for a machining center, including a machining center body 1, a mounting head 2 mounted on the surface of the machining center body 1, a mounting hole 3 formed on the surface of the mounting head 2, a tool changing structure 4 provided on the surface of the mounting head 2, a receiving structure 5 fixedly connected to the side wall of the machining center body 1, and a locking structure 6 provided on the surface of the pivot pin 57.

[0041] The specific settings and functions of its tool changing structure 4, receiving structure 5, and locking structure 6 will be explained in detail below.

[0042] like Figures 1-4 As shown, the tool changing structure 4 includes two pre-reserved slots 408 on the side wall of the mounting head 2, which are connected to the mounting hole 3. A connecting frame 401 is fixedly connected to the side wall of the mounting head 2, and two slide bars 409 are fixedly connected to the side wall of the connecting frame 401. A pressure frame 405 is slidably connected to the side wall of each slide bar 409. The pressure frame 405 is located inside the pre-reserved slots 408. A sliding groove 410 is provided inside the connecting frame 401, and a push frame 402 with a V-shaped structure is slidably connected to the inner wall of the sliding groove 410. By setting up the tool changing structure 4, the fully automatic tool changing operation is facilitated. The operator only needs to insert the tool into the mounting hole 3 to change the tool, which improves the tool changing efficiency to a certain extent. A lead screw 403 is rotatably connected inside the connecting frame 401, and the lead screw 403 and the push frame 402 are internally threaded. The drive screw 403 rotates, and the push frame 402, threadedly connected to the screw 403, slides along the groove 410 inside the connecting frame 401. A first motor 404 is fixedly mounted on the surface of the connecting frame 401, and the output end of the first motor 404 is fixedly connected to the end side of the screw 403. When the first motor 404 is started, it drives the screw 403 to rotate. A first spring 407 is fixedly mounted between the connecting frame 401 and the pressure frame 405. The first spring 407 always provides elastic support. Anti-slip pads 406 are glued to the sides of the two pressure frames 405 that are close to each other. The anti-slip pads 406 on the inner side of the pressure frames 405 can increase friction and prevent the tool from loosening during processing.

[0043] like Figures 1-3 and Figure 5As shown, the receiving structure 5 includes a mounting frame 51 fixedly connected to the side wall of the machining center body 1. A second motor 52 is fixedly mounted inside the mounting frame 51. A rotating shaft 53 is fixedly mounted at the output end of the second motor 52. A rotating plate 54 is fixedly mounted at the upper end of the rotating shaft 53. A pivot pin 57 is rotatably connected inside the rotating plate 54. A rectangular frame 56 is fixedly connected to the end of the pivot pin 57. A support cloth 55 is fixedly mounted inside the rectangular frame 56. By setting the receiving structure 5, the rectangular frame 56 and the support cloth 55 are rotated to a position below the mounting hole 3. During the automatic tool disassembly process, the tool will fall above the support cloth 55, facilitating the automatic collection of tools during tool replacement and further improving the tool replacement efficiency.

[0044] like Figures 1-2 and Figures 5-7 As shown, the locking structure 6 includes a rotating block 61 fixedly connected to the end of the rotating pin 57. The rotating block 61 has an internal sliding pin 62. The side wall of the rotating plate 54 has an insertion hole 65, the size of which matches the size of the pin 62. By setting the locking structure 6, after the pin 62 is pulled out from the inside of the insertion hole 65, the rotating pin 57 can be rotated, thereby enabling the emptying of stockpiled tools. This facilitates the centralized emptying of stockpiled tools and improves the processing efficiency to a certain extent. A stop block 63 is fixedly connected to the end of the pin 62. The stop block 63 facilitates the pulling of the pin 62. A second spring 64 is sleeved on the surface of the pin 62, with both ends of the second spring 64 fixedly connected to the stop block 63 and the rotating block 61, respectively. The second spring 64 drives the pin 62 to reset and insert into the insertion hole 65 through the stop block 63. An auxiliary head 66 is fixedly connected to the end of the pin 62 away from the stop block 63. The auxiliary head 66 has a frustum-shaped structure. The frustum-shaped auxiliary head 66 improves the efficiency of the pin 62 inserting into the inner side of the socket 65.

[0045] The overall working principle is as follows: The operator simply inserts the mounting end of the tool to be replaced into the mounting hole 3 of the mounting head 2, starts the first motor 404, and drives the lead screw 403 to rotate. The push frame 402, threadedly connected to the lead screw 403, slides along the slide groove 410 inside the connecting frame 401. The push frame 402 pushes the two pressure frames 405 to move along the slide bar 409 towards the tool until the pressure frames 405 are tightly against the side wall of the tool. The clamping force of the pressure frames 405 achieves the fixed installation of the tool. Simultaneously, the first spring 407 always provides elastic support, facilitating the reverse driving of the lead screw 403. The two pressure frames 405 are pushed to move away from each other. The anti-slip pad 406 on the inner side of the pressure frame 405 can increase the friction and prevent the tool from loosening during processing. When it is necessary to remove the old tool, the first motor 404 drives the lead screw 403 in reverse, the push frame 402 moves back, and the pressure frame 405 releases the tool under the reset action of the first spring 407, completing the automatic disassembly. By setting the tool changing structure 4, the fully automatic tool changing work is facilitated. The operator only needs to insert the tool installation position into the inner side of the installation hole 3 to realize the tool changing work, which improves the tool changing efficiency to a certain extent.

[0046] Before disassembling the old tool, the second motor 52 is started. The second motor 52 drives the rotating plate 54 to rotate through the rotating shaft 53, so that the rectangular frame 56 on the rotating plate 54 and the inner support cloth 55 rotate to directly below the mounting hole 3. The disassembled tool falls directly onto the support cloth 55, realizing automatic collection of the tool and avoiding damage or loss of the tool. This further improves the continuity of tool changing. By setting the receiving structure 5, the rectangular frame 56 and the support cloth 55 are rotated to a position below the mounting hole 3. During the automatic tool disassembly process, the tool will fall on the support cloth 55, which facilitates the automatic collection of the tool during replacement and further improves the efficiency of tool replacement.

[0047] Once a certain number of old knives have accumulated on the support cloth 55, the worker pulls the pin 62 in the locking structure 6, causing the pin 62 to be pulled out of the insertion hole 65 on the side wall of the rotating plate 54. At this time, the rotating pin 57 can rotate freely. Rotating the rotating pin 57 will cause the rectangular frame 56 to tilt, concentrating the accumulated knives into the designated collection container. After the dumping is completed, the pin 62 is released, and the second spring 64, through the stop block 63, causes the pin 62 to reset and insert into the insertion hole 65. The frustum-shaped auxiliary head 66 raises the insertion of the pin 62 into the insertion hole 65. The efficiency is improved by fixing the pivot pin 57 and completing the centralized processing of tools. By setting the locking structure 6, the pin 62 can be pulled out from the inside of the insertion hole 65, and the pivot pin 57 can be rotated to realize the dumping of the stockpiled tools. This facilitates the centralized dumping of stockpiled tools and improves the processing efficiency of stockpiled tools to a certain extent. The whole process does not require the use of external tools. Through the automated linkage of the mechanical structure, the tool replacement, collection and processing are integrated, which significantly improves the tool changing efficiency and operation convenience of the machining center.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. An automatic tool changer for a machining center, comprising a machining center body (1), characterized in that: The surface of the machining center body (1) is equipped with an installation head (2), the surface of the installation head (2) is provided with an installation hole (3), the surface of the installation head (2) is provided with a tool changing structure (4), the tool changing structure (4) includes two reserved grooves (408) opened on the side wall of the installation head (2), the reserved grooves (408) and the installation hole (3) are connected, the side wall of the installation head (2) is fixedly connected with a connecting frame (401), the side wall of the connecting frame (401) is fixedly connected with two slide bars (409), the side walls of the two slide bars (409) are slidably connected with a pressure frame (405), the pressure frame (405) is located inside the reserved groove (408), the inner side of the connecting frame (401) is provided with a sliding groove (410), the inner wall of the sliding groove (410) is slidably connected with a push frame (402), the push frame (402) is a V-shaped structure.

2. The automatic tool changer for a machining center according to claim 1, characterized in that: The connecting frame (401) is internally rotatably connected to a lead screw (403), and the lead screw (403) is internally threadedly connected to the push frame (402).

3. The automatic tool changer for a machining center according to claim 2, characterized in that: The first motor (404) is fixedly mounted on the surface of the connecting frame (401), and the output end of the first motor (404) is fixedly connected to the end side of the lead screw (403).

4. The automatic tool changer for a machining center according to claim 1, characterized in that: A first spring (407) is fixedly installed between the connecting frame (401) and the pressure frame (405).

5. An automatic tool changer for a machining center according to claim 1, characterized in that: Anti-slip pads (406) are glued to the sides of the two pressure frames (405) that are close to each other.

6. The automatic tool changer for a machining center according to claim 1, characterized in that: The machining center body (1) is fixedly connected to a receiving structure (5) on its side wall. The receiving structure (5) includes a mounting frame (51) fixedly connected to the side wall of the machining center body (1). A second motor (52) is fixedly installed on the inner side of the mounting frame (51). A rotating shaft (53) is fixedly installed at the output end of the second motor (52). A rotating plate (54) is fixedly installed at the upper end of the rotating shaft (53). A rotating pin (57) is rotatably connected inside the rotating plate (54). A rectangular frame (56) is fixedly connected to the end side of the rotating pin (57). A support cloth (55) is fixedly installed on the inner side of the rectangular frame (56).

7. An automatic tool changer for a machining center according to claim 6, characterized in that: The surface of the pivot pin (57) is provided with a locking structure (6), the locking structure (6) includes a pivot block (61) fixedly connected to the end side of the pivot pin (57), the internal sliding pin (62) of the pivot block (61) has a pin (62), the side wall of the pivot plate (54) is provided with a socket (65), and the size of the pin (62) and the size of the socket (65) are matched.

8. An automatic tool changer for a machining center according to claim 7, characterized in that: A stop (63) is fixedly connected to the end side of the pin (62).

9. An automatic tool changer for a machining center according to claim 8, characterized in that: The surface of the pin (62) is fitted with a second spring (64), and the two ends of the second spring (64) are fixedly connected to the stop block (63) and the rotating block (61) respectively.

10. An automatic tool changer for a machining center according to claim 7, characterized in that: An auxiliary head (66) is fixedly connected to the end of the pin (62) away from the stop (63), and the auxiliary head (66) is a frustum-shaped structure.

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