Novel CNC cutter rapid switching frame

Abstract

The utility model discloses a novel CNC cutter rapid switching frame, and relates to the technical field of CNC machining centers. According to the technical scheme, the novel CNC tool fast switching frame comprises a tool magazine and a tool changing mechanism, and is characterized in that the tool magazine is installed on the tool changing mechanism; the tool magazine comprises a turntable, a transmission mechanism is mounted in the center of the tool magazine, and a rotating structure is mounted on the turntable; the transmission mechanism comprises an air cylinder, a transmission shaft is installed in the air cylinder, a limiting sleeve is installed at the foremost end of the transmission shaft, a conical groove is formed in the joint of the limiting sleeve and the transmission shaft, a push shaft is slidably connected into the transmission shaft, a connecting block is installed at the front end of the push shaft, and a chuck support is rotationally installed on the connecting block. The rotating structure comprises a connecting frame, a transmission head is arranged on the connecting frame, a limiting block is connected to the connecting frame, and a positioning ball is installed above the connecting position of the connecting frame and the limiting block. The utility model aims to provide a novel CNC (computer numerical control) cutter quick switching frame, which achieves the effects of long-time stable work and accurate cutter position positioning.

Description

Technical Field

[0001] The utility model discloses a novel CNC tool quick switching rack, and relates to the technical field of CNC machining centers. Background Art

[0002] CNC machining center is a machine tool used for numerical control machining, which can control the movement of cutting tools and workpieces through pre-programmed instructions to achieve the machining of complex parts. CNC machining center is widely used in various industries, such as aerospace, automobile manufacturing, mold manufacturing, medical equipment, etc., and can process parts of various materials, including metal, plastic, wood, etc. It has the characteristics of high precision, high efficiency and strong flexibility, and can achieve precision machining of complex parts.

[0003] In CNC machining centers, a tool changing mechanism is used to realize automatic tool replacement. In the case of automatic tool replacement, the tool and the tool fixing parts may become fatigued due to long-term use of the equipment in the tool magazine or frequent tool replacement, resulting in inaccurate positioning of the tool in the tool magazine, causing tool jamming. Therefore, it is necessary to provide a new type of CNC tool quick switching rack to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a novel CNC tool fast switching rack, which can achieve the effect of being able to work stably for a long time and accurately locate the tool position.

[0005] A novel CNC tool fast switching rack includes a tool magazine and a tool changing mechanism, characterized in that: the tool magazine is installed on the tool changing mechanism; the tool magazine includes a turntable, characterized in that: a tool group is installed on the turntable, a baffle plate is installed on the turntable, a protective cover is arranged on the outside of the tool magazine, a transmission mechanism is installed at the center of the tool magazine, the transmission mechanism is fixed, and a rotating structure is installed on the turntable; the transmission mechanism includes a cylinder, a transmission shaft is installed in the cylinder, a limit sleeve is installed at the front end of the transmission shaft, and the limit sleeve is connected to the transmission shaft A conical groove is provided at the joint, a push shaft is slidably connected in the transmission shaft, a connecting block is installed at the front end of the push shaft, a spring is installed on the connecting block, a chuck bracket is rotatably installed on the connecting block, the chuck bracket is fixedly connected to the spring, a chuck is provided at the front end of the chuck bracket, and a rotating wheel is installed at the lower side of the chuck; the rotating structure includes a connecting frame, characterized in that: a tool is installed on the connecting frame, a transmission head is provided on the connecting frame, a limiting block is rotatably connected to the connecting frame, and a positioning bead is installed above the connection between the connecting frame and the limiting block.

[0006] Preferably, the turntable is driven by a motor, and the shape of the turntable is a concentric circle.

[0007] Preferably, each component of the tool set is equipped with a rotating structure.

[0008] Preferably, a protection groove is provided at the lower end of the limiting sleeve.

[0009] Preferably, the connection block is in the shape of a semicircular block, and a rectangular protrusion is provided on the connection block.

[0010] Preferably, the overall shape of the chuck bracket is an arc, and the middle part is an arc-shaped protrusion.

[0011] Preferably, the transmission head is composed of a resistance block and an arc block, wherein the resistance block is located on one side of the connecting frame, the resistance block has a concave curved surface, and the arc block is installed at the center of the curved surface to form a notch with the resistance block.

[0012] Preferably, the limit block is provided with an inclined surface, which limits the rotation range of the connecting frame. A limit slot is provided at the central axis of the limit block, which limits the left and right movement range of the connecting frame. The positioning bead is connected to the connecting frame through a small spring. Positioning slots are provided on the inner walls on both sides of the limit slot, and the positioning slots can cooperate with the positioning bead to play a positioning role.

[0013] Compared with the prior art, the utility model has the following beneficial effects: through the cooperation between the transmission mechanism and the rotating structure, the tool can be stably conveyed to the tool changing mechanism, and the position of the tool is limited so that it will not shake due to movement, thereby changing the position of the tool, making the entire tool changing mechanism more stable. Through the cooperation between the chuck bracket, the limit sleeve and the tapered groove in the limit sleeve, the entire transmission mechanism can complete the adaptive clamping and pushing of the rotating structure to complete the tool feeding, and the positioning beads installed in the connecting frame can lock the rotating structure in a state perpendicular to the turntable, reducing the collision of the tool when the turntable switches the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall schematic diagram of a new type of CNC tool quick switching rack;

[0015] Figure 2 for Figure 1 The overall schematic diagram of the rotating structure and transmission mechanism of a new type of CNC tool quick switching rack;

[0016] Figure 3 for Figure 2 Schematic diagram of the transmission mechanism;

[0017] Figure 4 for Figure 2 Schematic diagram of the rotating structure.

[0018] Among them, the reference numerals in the figure are:

[0019] 1. Tool magazine; 11. Turntable; 12. Tool group; 13. Protective cover; 14. Blocking plate; 2. Tool changing mechanism; 3. Transmission mechanism; 31. Cylinder; 32. Limit sleeve; 33. Connecting block; 34. Spring; 35. Chuck bracket; 36. Conical groove; 37. Transmission shaft; 371. Push shaft; 38. Chuck; 381. Rotating wheel; 39. Protective groove; 4. Rotating structure; 41. Tool; 42. Connecting frame; 421. Transmission head; 422. Positioning bead; 43. Limit block; 431. Inclined surface; 432. Limit groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 As shown, a new type of CNC tool fast switching rack includes a tool magazine 1 and a tool changing mechanism 2. The tool magazine 1 is installed on the tool changing mechanism 2. The tool magazine 1 includes a turntable 11. The drive mode of the turntable 11 is motor drive. The shape of the turntable 11 is a concentric circle. A tool group 12 is installed on the turntable 11. The tool group 12 is evenly arranged on the turntable 11. A baffle plate 14 is installed on the turntable 11. The position where the baffle plate 14 is installed is the center of the circle surrounded by the tool group 12. A protective cover 13 with a gap is provided on the outside of the tool magazine 1. During operation, the turntable 11 is driven by a motor to rotate until the required tool of the tool group 12 moves to the gap of the protective cover 13. The tool changing mechanism 2 changes the selected tool on the tool machine. The baffle plate 14 protects its internal structure and ensures the stability of the entire device. The protective cover 13 protects the tool group 12 from damage.

[0022] like Figure 2 As shown, Figure 1 The tool magazine 1 is provided with a transmission mechanism 3 at its center, the transmission mechanism 3 is fixed, a rotating structure 4 is provided on the turntable 11, and each component of the tool group 12 is provided with a rotating structure 4. When working, the transmission mechanism 3 can control the rotating structure 4 to rotate at an angle of 90 degrees, and the movement state of the transmission mechanism 3 is hooking and resisting and pushing, and the rotating structure 4 can make the tool 41 rotate 90 degrees.

[0023] like Figure 3As shown, the transmission mechanism 3 includes a cylinder 31, a transmission shaft 37 is installed in the cylinder 31, a limit sleeve 32 is installed at the front end of the transmission shaft 37, a protection groove 39 is provided at the lower end of the limit sleeve 32, a conical groove 36 is provided at the connection between the limit sleeve 32 and the transmission shaft 37, a push shaft 371 is provided in the transmission shaft 37, the push shaft 371 is slidably connected inside the transmission shaft 37, a connecting block 33 is installed at the front end of the push shaft 371, and the shape of the connecting block 33 is a Semicircular block, a rectangular protrusion is provided on the connecting block 33, springs 34 are installed on both sides of the rectangular protrusion on the connecting block 33, a chuck bracket 35 is rotatably installed on the connecting block 33, the chuck bracket 35 is fixedly connected to the spring 34, the overall shape of the chuck bracket 35 is an arc and the middle part is an arc-shaped protrusion, the limit sleeve 32 limits the range of motion of the chuck bracket 35, the front end of the chuck bracket 35 is provided with a chuck 38, and a rotating wheel 381 is installed on the lower side of the chuck 38. In the initial state, the cylinder 31 controls the transmission shaft to be in a retracted state, the chuck 38 does not contact any tool group 12, the top of the chuck bracket 35 is located at the bottom of the tapered groove 36, and the chuck 38 is in an open state. When starting work, the cylinder 31 pushes out the transmission shaft 37, and the push shaft 371 pushes the connecting block 33 forward, the end of the chuck bracket 35 leaves the tapered groove 36, and the arc-shaped protrusion in the middle of the chuck bracket 35 contacts the inner wall of the limit sleeve 32 to limit the range of movement, and the chuck 38 is buckled inward.

[0024] like Figure 4 As shown, the rotating structure 4 includes a connecting frame 42, a tool 41 is installed on the connecting frame 42, a transmission head 421 is arranged on the connecting frame 42, and the transmission head 421 is composed of a resistance block and an arc block, wherein the resistance block is located on one side of the connecting frame 42, the resistance block has a concave curved surface, and the arc block is installed at the center of the curved surface to form a notch, and the connecting frame 42 is rotatably connected to a limiting block 43, and the limiting block 43 is provided with an inclined surface 431, and the inclined surface 431 limits the connection The rotation range of the connecting frame 42, a limiting groove 432 is provided at the central axis of the limiting block 43, and the limiting groove 432 limits the left and right movement range of the connecting frame 42. A positioning bead 422 is installed above the connection between the connecting frame 42 and the limiting block 43. The positioning bead 422 is connected to the connecting frame 42 through a small spring (not marked in the figure), and positioning grooves are provided on the inner walls on both sides of the limiting groove 432 (not marked in the figure), and the positioning grooves can be connected with the positioning bead 422 to play a positioning role. In the initial state, the abutment block conflicts with the inclined surface on the limiting block 43, and the positioning bead 422 is in the positioning grooves provided on the inner walls on both sides of the limiting groove 432, and the tool 41 is perpendicular to the turntable 11. When Figure 3When the chuck 38 in the transmission mechanism 3 described in the above description hits the arc block on the transmission head 421, the chuck 38 is pressed open and the spring 34 contracts. When the chuck 38 enters the slot, the spring 34 returns to its original state, the chuck 38 buckles inward, and the push shaft 371 continues to push the connecting block 33 to make the chuck 38 continue to move forward. When the rotating wheel 381 set on the chuck 38 hits the resistance block, the thrust of the push shaft 371 makes the rotating wheel 381 move along the curved surface on the resistance block, thereby pushing the connecting frame 42 to rotate, and the positioning bead 422 leaves the positioning groove in the limiting groove 432 until the connecting frame 42 is pushed until its outer surface contacts the surface of the turntable 11, and then the tool changing mechanism 2 replaces the tool 41. When the return begins, the cylinder 31 controls the transmission rod 37 to contract, driving the push shaft 371 to pull the connecting block 33, and the chuck 38 is always in the inward buckle state. After the chuck 38 contacts the arc block on the transmission head 421, the transmission head 421 is pulled along the curved surface on the arc block to rotate the connecting frame 42, until the resistance block on the transmission head 421 contacts the inclined surface 431 on the limit block 43, and the positioning bead 422 enters the positioning grooves set on the inner walls of the limit groove 432 on both sides, and the end of the chuck bracket 35 enters the tapered groove 36, so that the chuck 38 opens and exits the rotating structure 4, and then the transmission mechanism 3 returns to the initial state, and the turntable 11 rotates under the drive of the motor to send the tool 41 into the tool magazine 1. The function of the protection groove 39 is to limit the position of the limit sleeve 32 and the transmission head 421, and the protection mechanism is damaged due to contact during movement.

[0025] In summary, through the cooperation between the transmission mechanism 3 and the rotating structure 4, the tool 41 can be stably conveyed to the tool changing mechanism 2, and the position of the tool 41 is limited so that it will not shake due to movement, thereby changing the position of the tool 41, making the entire tool changing mechanism 2 more stable. Through the cooperation of the chuck bracket 35, the limiting sleeve 32 and the tapered groove 36 in the limiting sleeve 32, the entire transmission mechanism 3 can complete the adaptive clamping and pushing of the rotating structure 4 to complete the tool delivery. The positioning beads 422 installed in the connecting frame 42 can lock the rotating structure 4 in a state perpendicular to the turntable 11, and reduce the collision of the tool when the turntable 11 switches the tool 41.

[0026] The above is only a preferred implementation of the present application. The protection scope of the present application is not limited to the above embodiments. All technical solutions under this idea belong to the protection scope of the present application. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present application should also be regarded as the protection scope of the present application.

Claims

1. A novel CNC tool quick switching rack, comprising a tool magazine (1) and a tool changing mechanism (2), characterized in that: The tool magazine (1) is installed on the tool changing mechanism (2); The tool magazine (1) comprises a rotating disk (11), characterized in that: a tool group (12) is installed on the rotating disk (11), a blocking plate (14) is installed on the rotating disk (11), a protective cover (13) is arranged on the outside of the tool magazine (1), a transmission mechanism (3) is installed at the center of the tool magazine (1), the transmission mechanism (3) is fixed, and a rotating structure (4) is installed on the rotating disk (11); The transmission mechanism (3) comprises a cylinder (31), characterized in that: a transmission shaft (37) is installed in the cylinder (31), a limiting sleeve (32) is installed at the front end of the transmission shaft (37), a conical groove (36) is provided at the connection between the limiting sleeve (32) and the transmission shaft (37), a push shaft (371) is slidably connected in the transmission shaft (37), a connecting block (33) is installed at the front end of the push shaft (371), a spring (34) is installed on the connecting block (33), a chuck bracket (35) is rotatably installed on the connecting block (33), the chuck bracket (35) is fixedly connected to the spring (34), a chuck (38) is provided at the front end of the chuck bracket (35), and a rotating wheel (381) is installed on the lower side of the chuck (38); The rotating structure (4) comprises a connecting frame (42), characterized in that: a tool (41) is installed on the connecting frame (42), a transmission head (421) is arranged on the connecting frame (42), a limit block (43) is rotatably connected to the connecting frame (42), and a positioning bead (422) is installed above the connection between the connecting frame (42) and the limit block (43).

2. A novel CNC tool quick switching rack according to claim 1, characterized in that: The rotating disk (11) is driven by a motor, and the shape of the rotating disk (11) is a concentric circle.

3. A novel CNC tool quick switching rack according to claim 1, characterized in that: Each component of the tool set (12) is equipped with a rotating structure (4).

4. A novel CNC tool quick switching rack according to claim 1, characterized in that: A protection groove (39) is provided at the lower end of the limiting sleeve (32).

5. The novel CNC tool quick switching rack according to claim 1 is characterized in that: The connection block (33) is in the shape of a semicircular block, and a rectangular protrusion is provided on the connection block (33).

6. A novel CNC tool quick switching rack according to claim 1, characterized in that: The overall shape of the clamp bracket (35) is an arc, and the middle part is an arc-shaped protrusion.

7. A novel CNC tool quick switching rack according to claim 1, characterized in that: The transmission head (421) is composed of a friction block and an arc block, wherein the friction The block is located at one side of the connecting frame (42), the abutting block has a concave curved surface, and the arc block is installed at the center of the curved surface to form a notch with the abutting block.

8. The novel CNC tool quick switching rack according to claim 1 is characterized in that: The limit block (43) is provided with an inclined surface (431), and the inclined surface (431) limits the rotation range of the connecting frame (42). The limit block (43) is provided with a limiting groove (432) at the central axis, and the limiting groove (432) limits the left and right movement range of the connecting frame (42). The positioning bead (422) is connected to the connecting frame (42) through a small spring. The inner walls on both sides of the limiting groove (432) are provided with positioning grooves, and the positioning grooves can be matched with the positioning bead (422) to play a positioning role.

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