Double-layer tool magazine changing tool processing device of numerical control machine tool

Abstract

The application belongs to the technical field of numerical control machine tools, and particularly relates to a double-layer tool magazine tool changing machining device of a numerical control machine tool. The device comprises a main frame, a servo motor is arranged on the top of the main frame, a transmission shaft is arranged on the output end of the servo motor, and an adapter ring is sleeved around the transmission shaft. The device can realize the overturning operation of the overturning plate and the replacement operation of the double-sided tool through the arrangement of the limiting slide rod, the concave ring and the limiting triangular plate. After the driving motor drives the driving disc to rotate, the driving slide rod rotates and drives the connected arc-shaped clamping plate to move. Since the limiting triangular plate and the groove on the side of the concave ring form a sliding groove, the limiting slide rod on one side of the arc-shaped clamping plate is embedded in the sliding groove. Meanwhile, the diameter of the driving slide rod is greater than the gap of the sliding groove, so the limiting slide rod on the other side of the arc-shaped clamping plate slides from the bottom of the limiting triangular plate. Thus, the limiting slide rod rotates by 180 degrees and indirectly drives the overturning operation of the overturning plate.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, and in particular to a double-layer tool magazine changing machining device for CNC machine tools. Background Technology

[0002] A tool magazine system is a device that provides the tool storage and tool changing capabilities required in automated machining processes. Its automatic tool changing mechanism and tool magazine that can store multiple tools have changed the traditional human-based production method. Through computer program control, it can complete various machining requirements, such as milling, drilling, boring, and tapping, which greatly shortens the machining time and reduces production costs. This is the biggest feature of a tool magazine system.

[0003] The design of a tool magazine needs to match the machine tool type (vertical / horizontal machining center, lathe, etc.), machining requirements (number, weight, and precision of tools), and production cycle time. The following is a detailed introduction based on core categories: Disc-type tool magazines (the most mainstream, accounting for over 70%): tools are evenly distributed along the circumference of the disc, and tool position switching is achieved through disc rotation, combined with a single-arm / double-arm tool changer mechanism; Chain-type tool magazines (preferred for large-capacity scenarios): tools are mounted on tool holders on a closed chain, and tool position switching is achieved by moving the tool holders through chain drive, suitable for long-distance, large-capacity tool storage needs; Hat-type tool magazines (preferred for economical options): the tool magazine is "hat-shaped" (tool holders are arranged along a circular base), and during tool changes, the entire tool magazine moves below the spindle, allowing direct tool retrieval / storage via the spindle (no separate tool changer arm required); Other special tool magazines (niche scenarios), mainly divided into grid-type tool magazines and dual independent tool magazines.

[0004] The advantages of existing dual-layer tool magazines come at the cost of "mechanical complexity, cost, and maintenance difficulty." The specific disadvantages are as follows: On the one hand, compared with single-layer tool magazines, dual-layer tool magazines need to solve three major problems: "interference in tool changing across layers," "synchronous positioning across layers," and "vertical space protection," resulting in high mechanical complexity and difficulty in design and manufacturing. On the other hand, there is "inter-layer loss" in tool changing time, the ultimate efficiency is lower than that of single-layer, the vertical space occupation is increased, the adaptability is limited, and the cost and maintenance cost are significantly increased.

[0005] Therefore, a double-layer tool magazine tool changing machining device for CNC machine tools is needed. Summary of the Invention

[0006] This invention proposes a double-layer tool changer for CNC machine tools, which solves three major problems existing in the prior art compared to single-layer tool magazines: "cross-layer tool change interference," "double-layer synchronous positioning," and "vertical space protection." These problems result in high structural complexity and significant design and manufacturing difficulties. On the other hand, the double-layer tool magazine suffers from "cross-layer loss" in tool change time, resulting in lower limit efficiency than single-layer magazines, increased vertical space occupation, limited adaptability, and significantly increased costs and maintenance costs.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A CNC machine tool double-layer tool magazine changing machining device includes a main frame, a servo motor at the top of the main frame, a drive shaft at the output end of the servo motor, a connecting collar sleeved around the drive shaft, a detachable connecting frame at the bottom of the connecting collar, a detachable tool changing mechanism at the bottom of the connecting frame, and a detachable clamping mechanism at the bottom of the tool changing mechanism. One end of the drive shaft is provided with a sub-frame, and the interior of the sub-frame is provided with a detachable cutter head mechanism. The side wall of the sub-frame is provided with a drive motor for driving the cutter head mechanism.

[0008] Preferably, the bottom of the connecting frame is connected to a cam box, the side of the cam box is provided with a detachable motor, the top of the cam box is provided with a detachable limiting sleeve, the limiting sleeve is provided with a detachable drive rod, the drive rod is provided with detachable limiting rings around its perimeter, the limiting rings are provided with a cam on their side, the cam surface is provided with a detachable limiting shaft, one end of the limiting shaft is provided with a concave retaining strip, one side of the concave retaining strip is provided with a detachable limiting rod, the output end of the motor is provided with a drive shaft, one end of the concave retaining strip is provided with a detachable pull rod, and the bottom of the pull rod is provided with a resistance collar.

[0009] Preferably, the limiting sleeve and the driving rod are embedded through structure, the limiting retaining ring has retaining rods evenly distributed around its perimeter, the cam has a groove on its arc surface, the retaining rods are embedded in the groove on the arc surface of the cam for sliding, the cam surface has an arc-shaped sliding groove, and the limiting shaft is embedded in the arc-shaped sliding groove of the cam for sliding.

[0010] Preferably, the active rod is rotatable with the cam via a limiting retaining ring, the active rod is lifting via the cam, the limiting rod is embedded inside the cam box, the concave retaining strip is rotatable via the limiting rod, and the pull rod and the concave retaining strip are embedded in a sliding structure.

[0011] Preferably, the bottom of the active rod is provided with a connecting plate, the side of the connecting plate is provided with a limiting ring, the inside of the limiting ring is provided with a resisting column, the side of the resisting column is provided with a detachable telescopic spring, the side of the telescopic spring is provided with a resisting rod, and the side of the resisting rod is provided with an arc-shaped clamp.

[0012] Preferably, one end of the resisting rod is symmetrically provided with a locking block, the locking block is embedded inside the telescopic spring, and the end of the limiting ring is designed as a quarter circle arc.

[0013] Preferably, the output end of the drive motor is provided with a drive disk, the side of the drive disk is provided with a drive slide rod, the end of the drive slide rod is provided with an arc-shaped locking plate, the two sides of the arc-shaped locking plate are provided with limiting slide rods, one end of the arc-shaped locking plate is provided with a detachable flip plate, the drive disk is provided with a concave ring around its perimeter, the side of the concave ring is fitted with a top cover, the inside of the concave ring is provided with a connecting frame, one end of the connecting frame is provided with a limiting triangular plate, the front and back sides of the flip plate are provided with tool magazine slots at equal intervals, the bottom of the inside of the tool magazine slot is provided with a tension spring, one end of the tension spring is provided with a support column, one end of the tool magazine slot is provided with a limiting concave ring, and the inside of the limiting concave ring is provided with a steel ball.

[0014] Preferably, the drive motor and the drive disk have a cooperative rotation structure, the side of the concave ring is provided with a groove, the limiting triangle plate and the groove on the side of the concave ring form a sliding groove, and the limiting slide rod is embedded in the sliding groove formed by the limiting triangle plate and the concave ring.

[0015] Preferably, the arc-shaped card plate and the flip plate are connected by a fixed shaft, the flip plate is in a rotating structure by a limiting slide rod, the concave ring is in a locking structure with the top cover, and the top cover is connected to the top inner side of the sub-frame by a connecting straight rod.

[0016] Preferably, the top of the support column is provided with a groove that matches the steel ball, and the side of the limiting concave ring is provided with a slot. The height of the slot is slightly smaller than the diameter of the steel ball, and the support column is in a sliding structure with the tool magazine slot through a tension spring.

[0017] This invention proposes a double-layer tool magazine tool changing machining device for CNC machine tools. Compared with the prior art, the advantages of this invention are: This invention enables the flipping operation of the flipping plate by setting a limiting slide rod, a concave ring, and a limiting triangle plate, thus realizing the replacement of double-sided tools. After the drive motor drives the drive disk to rotate, the drive slide rod rotates accordingly, driving the connected arc-shaped clamping plate to move. Since the limiting triangle plate and the groove on the side of the concave ring form a sliding groove, the limiting slide rod on one side of the arc-shaped clamping plate will be embedded in the sliding groove. At the same time, the diameter of the drive slide rod is larger than the gap of the sliding groove, so the limiting slide rod on the other side of the arc-shaped clamping plate will slide over the bottom of the limiting triangle plate. Thus, the limiting slide rod will achieve a 180-degree rotation, indirectly driving the flipping operation of the flipping plate. This invention, by setting a tool magazine groove, can achieve the function of external support and clamping for tools of different specifications; when the bottom end of the tool is sleeved around the limiting concave ring, due to the elastic effect of the tension spring, the support column will be pushed to slide, the steel ball will deviate from the groove on the top side of the support column, and then partially protrude from the slot opened on the side of the limiting concave ring, thus protruding outward of the limiting concave ring, realizing the internal support and clamping operation; This invention enables convenient tool replacement by setting up a tool changing mechanism. After the motor operates, it drives the drive shaft and cam to rotate together. Since the surface of the cam has an arc-shaped groove, the limiting shaft slides into the arc-shaped groove of the cam, which causes the concave retaining bar to change angle. One end of the concave retaining bar is limited by the limiting rod, so the other end of the concave retaining bar will drive the pull rod and the anti-force collar to move, so that the drive rod and the clamping mechanism can be adjusted in height. On the other hand, the arc surface of the cam has a groove, and the retaining bar slides into the groove of the arc surface of the cam, which can adjust the angle of the drive rod, indirectly driving the clamping mechanism to change angle, which facilitates the tool replacement operation. This invention provides an auxiliary clamping force for the installation and removal of cutting tools by setting a clamping mechanism. The setting of the telescopic spring and the locking block with one end of the anti-force rod embedded in the telescopic spring can form a stable anti-force structure. When the cutting tool is embedded in the arc plate at the end of the arc-shaped caliper and the limiting ring, the telescopic spring is compressed and then provides a reaction force, causing the arc-shaped caliper to exert anti-force on the cutting tool, thereby realizing the clamping operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a double-layer tool magazine tool changing machining device for CNC machine tools according to the present invention; Figure 2 This is a schematic diagram of the tool changing mechanism of a double-layer tool magazine machining device for CNC machine tools according to the present invention; Figure 3 This is a cross-sectional view of the tool changing mechanism of a double-layer tool magazine machining device for CNC machine tools according to the present invention; Figure 4 This is a schematic diagram of the internal structure of the tool changing mechanism of a double-layer tool magazine machining device for CNC machine tools according to the present invention; Figure 5 This is a schematic diagram of the cam structure of a double-layer tool magazine tool changing machining device for CNC machine tools according to the present invention; Figure 6 This is a schematic diagram of the clamping mechanism of a double-layer tool magazine tool changing machining device for CNC machine tools according to the present invention; Figure 7 This is a schematic diagram of the tool disc mechanism of a double-layer tool magazine tool changing machining device for CNC machine tools according to the present invention; Figure 8 This is a partial structural diagram of the tool disc mechanism of a double-layer tool magazine tool changing machining device for CNC machine tools according to the present invention; Figure 9 This is a partial structural diagram of the tool disc mechanism of a double-layer tool magazine tool changing machining device for CNC machine tools according to the present invention; Figure 10 This is a partial structural diagram of the tool disc mechanism of a double-layer tool magazine tool changing machining device for CNC machine tools according to the present invention; Figure 11 This is a schematic diagram of the concave ring structure of a double-layer tool magazine tool changing machining device for CNC machine tools according to the present invention; Figure 12 This is a schematic diagram of the limiting concave ring structure of a double-layer tool magazine tool changing machining device for CNC machine tools according to the present invention.

[0019] In the diagram: 1. Main frame; 2. Servo motor; 3. Drive shaft; 4. Connecting collar; 5. Connecting frame; 6. Tool changing mechanism; 601. Cam box; 602. Motor; 603. Limiting sleeve; 604. Driving rod; 605. Limiting retaining ring; 606. Cam; 607. Limiting shaft; 608. Concave retaining strip; 609. Limiting rod; 610. Drive shaft; 611. Pull rod; 612. Resistance collar; 7. Clamping mechanism; 701. Connecting plate; 702. Limiting outer retaining ring; 703. Support column; 704. Telescopic spring; 705. Support bar; 706. Arc-shaped caliper; 8. Subframe; 9. Cutter head mechanism; 901. Drive disc; 902. Drive slide bar; 903. Arc-shaped clamping plate; 904. Limit slide bar; 905. Flip plate; 906. Concave ring; 907. Top cover; 908. Connecting frame; 909. Limiting triangular plate; 910. Cutter magazine slot; 911. Tension spring; 912. Support column; 913. Limiting concave ring; 914. Steel ball. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-12 The present invention provides a technical solution: a CNC machine tool double-layer tool magazine changing machining device, including a main frame 1, a servo motor 2 on the top of the main frame 1, a transmission shaft 3 at the output end of the servo motor 2, a connecting collar 4 sleeved around the transmission shaft 3, a detachable connecting frame 5 at the bottom of the connecting collar 4, a detachable tool changing mechanism 6 at the bottom of the connecting frame 5, and a detachable clamping mechanism 7 at the bottom of the tool changing mechanism 6; One end of the drive shaft 3 is provided with a sub-frame 8, and the interior of the sub-frame 8 is provided with a detachable cutter head mechanism 9. The side wall of the sub-frame 8 is provided with a drive motor for driving the cutter head mechanism 9.

[0022] Furthermore, the bottom of the connecting frame 5 is connected to a cam box 601. A detachable motor 602 is provided on the side of the cam box 601. A detachable limiting sleeve 603 is provided on the top of the cam box 601. A detachable drive rod 604 is provided inside the limiting sleeve 603. Detachable limiting rings 605 are provided around the drive rod 604. A cam 606 is provided on the side of the limiting rings 605. A detachable limiting shaft 607 is provided on the surface of the cam 606. A concave retaining strip 608 is provided at one end of the limiting shaft 607. A detachable limiting rod 609 is provided on one side of the concave retaining strip 608. A drive shaft 610 is provided at the output end of the motor 602. A detachable pull rod 611 is provided at one end of the concave retaining strip 608. The bottom of the pull rod 611 is provided with… The anti-force collar 612; after the motor 602 operates, it will drive the drive shaft 610 and the cam 606 to rotate together. Since the surface of the cam 606 has an arc-shaped groove, the limiting shaft 607 is embedded in the arc-shaped groove of the cam 606 and slides, which will cause the concave clamping bar 608 to change angle. One end of the concave clamping bar 608 is limited by the limiting rod 609, so the other end of the concave clamping bar 608 will drive the pull rod 611 and the anti-force collar 612 to move, causing the active rod 604 and the clamping mechanism 7 to achieve vertical height adjustment. On the other hand, the arc surface of the cam 606 has a groove, and the clamping bar is embedded in the arc surface groove of the cam 606 to slide, which can adjust the angle of the active rod 604, indirectly driving the clamping mechanism 7 to achieve angle change, which is convenient for tool replacement operation.

[0023] Furthermore, the limiting sleeve 603 and the driving rod 604 form an embedded through structure. The limiting retaining ring 605 has retaining rods evenly distributed around its perimeter. The cam 606 has a groove on its arc surface, and the retaining rods are embedded in the groove for sliding. The surface of the cam 606 has an arc-shaped groove, and the limiting shaft 607 is embedded in the arc-shaped groove for sliding. Because the surface of the cam 606 has an arc-shaped groove, and the limiting shaft 607 slides within it, the limiting shaft 607... The concave retaining bar 608 is caused to change angle, and one end of the concave retaining bar 608 is limited by the limiting rod 609. Therefore, the other end of the concave retaining bar 608 will drive the pull rod 611 and the resisting collar 612 to move, so as to enable the drive rod 604 and the clamping mechanism 7 to adjust the height. On the other hand, the cam 606 has a groove on its arc surface. The retaining rod is embedded in the groove of the arc surface of the cam 606 and slides, which can adjust the angle of the drive rod 604, indirectly driving the clamping mechanism 7 to change angle, which facilitates the tool changing operation.

[0024] Furthermore, the drive rod 604 is rotatably connected to the cam 606 via the limiting ring 605, and the drive rod 604 is also lifting via the cam 606. The limiting rod 609 is embedded inside the cam box 601, the concave retaining bar 608 is rotatably connected to the limiting rod 609, and the pull rod 611 is embedded in the concave retaining bar 608 in a sliding structure. Through the limiting ring 605 and the cam 606, the drive rod 604 can be driven to rotate. At the same time, by using the limiting shaft 607 embedded in the arc-shaped groove of the cam 606 and the limiting rod 609 to limit one end of the concave retaining bar 608, the drive rod 604 will achieve lifting and lowering operations.

[0025] Furthermore, the bottom of the active lever 604 is provided with a connecting plate 701, the side of the connecting plate 701 is provided with a limiting ring 702, the inside of the limiting ring 702 is provided with a resisting column 703, the side of the resisting column 703 is provided with a detachable telescopic spring 704, the side of the telescopic spring 704 is provided with a resisting rod 705, and the side of the resisting rod 705 is provided with an arc-shaped caliper 706. The setting of the telescopic spring 704 and the fact that one end of the resisting rod 705 is embedded in the internal locking block of the telescopic spring 704 can form a stable resisting structure. When the tool is embedded in the arc plate at the end of the arc-shaped caliper 706 and the limiting ring 702, the telescopic spring 704 is compressed, and then provides a reaction force, causing the arc-shaped caliper 706 to exert a resisting force on the tool, thereby realizing the clamping operation.

[0026] Furthermore, one end of the resisting rod 705 is symmetrically provided with a locking block, which is embedded inside the telescopic spring 704. The end of the limiting ring 702 is designed as a quarter-circle arc. By embedding one end of the resisting rod 705 into the locking block inside the telescopic spring 704, a stable resisting structure can be formed. At the same time, after the telescopic spring 704 is compressed, it will provide a reaction force, causing the arc-shaped caliper 706 to exert a resisting force on the tool, thereby realizing the clamping operation.

[0027] Furthermore, the output end of the drive motor is provided with a drive disc 901, the side of the drive disc 901 is provided with a drive slide rod 902, the end of the drive slide rod 902 is provided with an arc-shaped retaining plate 903, the two sides of the arc-shaped retaining plate 903 are provided with limiting slide rods 904, one end of the arc-shaped retaining plate 903 is provided with a detachable flip plate 905, the drive disc 901 is provided with a concave ring 906 around its perimeter, the side of the concave ring 906 is engaged with a top cover 907, the inside of the concave ring 906 is provided with a connecting frame 908, one end of the connecting frame 908 is provided with a limiting triangular plate 909. The flip plate 905 has tool magazine slots 910 equidistantly arranged on both sides. A tension spring 911 is provided at the bottom of the tool magazine slot 910. A support column 912 is provided at one end of the tension spring 911. A limiting concave ring 913 is provided at one end of the tool magazine slot 910. A steel ball 914 is provided inside the limiting concave ring 913. By setting the limiting slide bar 904, the concave ring 906 and the limiting triangular plate 909, the flip plate 905 can be flipped to realize the double-sided tool replacement operation. The tool magazine slots 910 can realize the external support and clamping function for tools of different specifications.

[0028] Furthermore, the drive motor and drive disk 901 have a cooperative rotation structure. The side of the concave ring 906 is provided with a groove. The limiting triangle plate 909 and the groove on the side of the concave ring 906 form a sliding groove. The limiting slide rod 904 is embedded in the sliding groove formed by the limiting triangle plate 909 and the concave ring 906. After the drive motor drives the drive disk 901 to rotate, the drive slide rod 902 rotates accordingly, driving the connected arc-shaped clamping plate 903 to move. Since the limiting triangle plate 909 and the groove on the side of the concave ring 906 form a sliding groove, the limiting slide rod 904 on one side of the arc-shaped clamping plate 903 will be embedded in the sliding groove. At the same time, the diameter of the drive slide rod 902 is larger than the gap of the sliding groove, so the limiting slide rod 904 on the other side of the arc-shaped clamping plate 903 will slide over the bottom of the limiting triangle plate 909. Thus, the limiting slide rod 904 will achieve a 180-degree rotation, indirectly driving the flipping operation of the flipping plate 905.

[0029] Furthermore, the arc-shaped clamping plate 903 and the flipping plate 905 are connected by a fixed shaft. The flipping plate 905 has a rotating structure through the limiting slide rod 904. The concave ring 906 and the top cover 907 have a locking structure. The top cover 907 is connected to the top inner side of the sub-frame 8 through a connecting straight rod. Since the arc-shaped clamping plate 903 and the flipping plate 905 are connected by a fixed shaft, the limiting slide rod 904 on one side of the arc-shaped clamping plate 903 slides over the bottom of the limiting triangle plate 909, causing the limiting slide rod 904 to rotate 180 degrees, indirectly driving the flipping operation of the flipping plate 905. The top cover 907 is connected to the top inner side of the sub-frame 8 through the connecting straight rod, which can provide a stable limiting function.

[0030] Furthermore, the top of the support column 912 is provided with a groove that matches the steel ball 914, and the side of the limiting concave ring 913 is provided with a slot. The height of the slot is slightly smaller than the diameter of the steel ball 914. The support column 912 is in a sliding structure with the tool magazine slot 910 through the tension spring 911. When the bottom end of the tool is sleeved around the limiting concave ring 913, the elasticity of the tension spring 911 will push the support column 912 to slide. The steel ball 914 will deviate from the groove on the top side of the support column 912 and then partially protrude from the slot on the side of the limiting concave ring 913, thus protruding outward of the limiting concave ring 913 to achieve the internal support clamping operation.

[0031] Working principle: This type of CNC machine tool double-layer tool magazine changing and machining device can be operated in the following ways; First, when the tool needs to be changed, the servo motor 2 is controlled to rotate the transmission shaft 3 and move the connecting collar 4, which will drive the connecting frame 5, the tool changing mechanism 6 and the clamping mechanism 7 to move towards the tool disc mechanism 9. Secondly, the operation of the control motor 602 will drive the drive shaft 610 and the cam 606 to rotate together. Since the surface of the cam 606 has an arc-shaped groove, the limiting shaft 607 slides in the arc-shaped groove of the cam 606, which will cause the concave clamping bar 608 to change angle. One end of the concave clamping bar 608 is limited by the limiting rod 609, so the other end of the concave clamping bar 608 will drive the pull rod 611 and the anti-force collar 612 to move, so that the active rod 604 and the clamping mechanism 7 can be adjusted in height. On the other hand, the arc surface of the cam 606 has a groove, and the clamping bar slides in the arc surface groove of the cam 606, which can adjust the angle of the active rod 604, indirectly driving the clamping mechanism 7 to change angle, which facilitates the tool changing operation. Next, the active lever 604 will drive the connecting plate 701 to rotate. In the clamping mechanism 7, the extension spring 704 and the retaining rod 705 embedded in the internal block of the extension spring 704 can form a stable retaining structure. When the tool is embedded in the arc plate at the end of the arc caliper 706 and the limiting ring 702, the extension spring 704 is compressed and then provides a reaction force, causing the arc caliper 706 to exert a retaining force on the tool, thereby realizing the clamping operation. Then, when the active lever 604 drives the clamping mechanism 7 to clamp and change the tool, the drive motor drives the drive disc 901 to rotate, and the drive slide bar 902 rotates accordingly, driving the connected arc-shaped clamping plate 903 to move. Since the limiting triangle plate 909 and the groove on the side of the concave ring 906 form a sliding groove, the limiting slide bar 904 on one side of the arc-shaped clamping plate 903 will be embedded in the sliding groove. At the same time, the diameter of the drive slide bar 902 is larger than the gap of the sliding groove, so the limiting slide bar 904 on the other side of the arc-shaped clamping plate 903 will slide over the bottom of the limiting triangle plate 909. Thus, the limiting slide bar 904 will achieve a 180-degree rotation, indirectly driving the flipping plate 905 to flip, realizing the tool changing operation of the double-layer tool. Finally, when the bottom end of the tool is fitted around the limiting concave ring 913, the elastic action of the tension spring 911 will push the support column 912 to slide. The steel ball 914 will deviate from the groove on the top side of the support column 912 and then partially protrude from the slot on the side of the limiting concave ring 913, thus protruding to the outside of the limiting concave ring 913 to achieve the internal support clamping operation.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CNC machine tool double-layer tool magazine changing and machining device, comprising a main frame, characterized in that: The top of the main frame is equipped with a servo motor, the output end of the servo motor is equipped with a drive shaft, the drive shaft is fitted with connecting rings around its perimeter, the bottom of the connecting rings is equipped with a detachable connecting frame, the bottom of the connecting frame is equipped with a detachable tool changing mechanism, and the bottom of the tool changing mechanism is equipped with a detachable clamping mechanism. One end of the drive shaft is provided with a sub-frame, and the interior of the sub-frame is provided with a detachable cutter head mechanism. The side wall of the sub-frame is provided with a drive motor for driving the cutter head mechanism. The bottom of the connecting frame is connected to a cam box, the side of the cam box is equipped with a detachable motor, the top of the cam box is equipped with a detachable limiting sleeve, the limiting sleeve is equipped with a detachable drive rod, the drive rod is equipped with detachable limiting rings around its perimeter, the limiting rings are equipped with a cam on their side, the cam surface is equipped with a detachable limiting shaft, one end of the limiting shaft is equipped with a concave retaining strip, one side of the concave retaining strip is equipped with a detachable limiting rod, the output end of the motor is equipped with a drive shaft, one end of the concave retaining strip is equipped with a detachable pull rod, and the bottom of the pull rod is equipped with a resistance collar. The limiting sleeve and the active rod are embedded through structure. The limiting ring has equidistantly distributed locking rods around its perimeter. The cam has a groove on its arc surface. The locking rods are embedded in the groove on the arc surface of the cam for sliding. The cam has an arc-shaped sliding groove on its surface. The limiting shaft is embedded in the arc-shaped sliding groove of the cam for sliding. The output end of the drive motor is provided with a drive disk, the side of the drive disk is provided with a drive slide rod, the end of the drive slide rod is provided with an arc-shaped locking plate, the two sides of the arc-shaped locking plate are provided with limiting slide rods, one end of the arc-shaped locking plate is provided with a detachable flip plate, the drive disk is provided with a concave ring around its perimeter, the side of the concave ring is fitted with a top cover, the inside of the concave ring is provided with a connecting frame, one end of the connecting frame is provided with a limiting triangular plate, the flip plate is provided with tool magazine slots equidistantly on both sides, the bottom of the tool magazine slot is provided with a tension spring, one end of the tension spring is provided with a support column, one end of the tool magazine slot is provided with a limiting concave ring, the inside of the limiting concave ring is provided with a steel ball.

2. The CNC machine tool double-layer tool magazine changing and machining device according to claim 1, characterized in that: The active rod is rotated with the cam via a limiting ring, the active rod is raised and lowered via the cam, the limiting rod is embedded inside the cam box, the concave clip is rotated via the limiting rod, and the pull rod and the concave clip are embedded and slidably connected.

3. The CNC machine tool double-layer tool magazine changing and machining device according to claim 1, characterized in that: The bottom of the active rod is provided with a connecting plate, the side of the connecting plate is provided with a limiting ring, the inside of the limiting ring is provided with a resisting column, the side of the resisting column is provided with a detachable telescopic spring, the side of the telescopic spring is provided with a resisting rod, and the side of the resisting rod is provided with an arc-shaped clamp.

4. The CNC machine tool double-layer tool magazine changing and machining device according to claim 3, characterized in that: One end of the resisting rod is symmetrically provided with a locking block, which is embedded inside the telescopic spring, and the end of the limiting ring is designed as a quarter circle arc.

5. A CNC machine tool double-layer tool magazine changing and machining device according to claim 1, characterized in that: The drive motor and the drive disc have a cooperative rotation structure. The side of the concave ring is provided with a groove. The limiting triangle plate and the groove on the side of the concave ring form a sliding groove. The limiting slide rod is embedded in the sliding groove formed by the limiting triangle plate and the concave ring.

6. A CNC machine tool double-layer tool magazine changing and machining device according to claim 1, characterized in that: The arc-shaped card plate and the flip plate are connected by a fixed shaft. The flip plate is in a rotating structure by a limiting slide rod. The concave ring and the top cover are in a locking structure. The top cover is connected to the top inner side of the sub-frame by a connecting straight rod.

7. A CNC machine tool double-layer tool magazine changing and machining device according to claim 1, characterized in that: The top of the support column is provided with a groove that matches the steel ball, and the side of the limiting concave ring is provided with a slot. The height of the slot is less than the diameter of the steel ball. The support column is in a sliding structure with the tool magazine slot through a tension spring.

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