Clamping head of numerical control machine tool spindle

Abstract

The utility model discloses a numerically-controlled machine tool spindle clamping head which comprises a cutter handle fixedly installed with the numerically-controlled machine tool spindle clamping head, a fixing frame is fixedly installed at the bottom of the cutter handle, a movable frame is integrally arranged in the middle of the fixing frame, and a rotating shaft is rotatably connected to the middle of the movable frame in a penetrating mode. Two gears are rotatably connected to the middle of the rotating shaft, the movable frame is slidably connected with racks located on the two sides of the gears in a penetrating mode, the racks are engaged with the two sides of the gears correspondingly, telescopic rods are integrally arranged at one ends of the racks, and the telescopic rods and the fixing frame are slidably arranged in a penetrating mode; a clamping head located outside the fixing frame is arranged at the tail end of the telescopic rod, a fixing transverse plate is fixedly installed in the cutter handle, and a rotating rod is rotationally connected to the middle of the fixing transverse plate. Manual work or an independent mechanical arm is effectively replaced, the workpiece taking speed is increased, meanwhile, labor force is reduced, long-time debugging of the independent mechanical arm is avoided, time is saved, and cost is controlled.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, specifically to a clamping head for a CNC machine tool spindle. Background Technology

[0002] CNC machine tools are automated machine tools equipped with a program control system. They can operate and process parts according to a pre-programmed program and are mostly used for metal parts processing, such as machining centers. Machining centers are equipped with tool magazines that can automatically change tools through program control. They have high machining accuracy and are easy to use. However, in the production process of machining centers, the clamping of products mainly relies on manual labor and independent robotic arms. When clamping a large number of products, after the production of one product is completed, it needs to be removed manually or by an independent robotic arm before the next product can be processed. Manual clamping is inefficient and increases labor costs. Independent robotic arms need to be purchased externally, are inconvenient to use, have high maintenance costs, increase production costs, and have long debugging time.

[0003] Therefore, we propose a clamping head for CNC machine tool spindles. Utility Model Content

[0004] The purpose of this invention is to provide a clamping head for a CNC machine tool spindle to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping head for a CNC machine tool spindle, comprising a tool holder fixedly mounted to the clamping head of the CNC machine tool spindle, a fixed frame fixedly mounted at the bottom of the tool holder, a movable frame integrally provided in the middle of the fixed frame, a rotating shaft rotatably connected through the middle of the movable frame, two gears rotatably connected in the middle of the rotating shaft, racks slidably connected through the movable frame to racks located on both sides of the gears, the racks meshing with the sides of the gears respectively, a telescopic rod integrally provided at one end of the racks, the telescopic rod slidably connected through the fixed frame, and the... The telescopic rod has a clamping head located outside the fixed frame at its end. A fixed horizontal plate is fixedly installed inside the knife handle. A rotating rod is rotatably connected to the middle of the fixed horizontal plate. Pneumatic push rods located on both sides of the rotating rod are fixedly installed at the top of the fixed horizontal plate. The bottom of the rotating rod is fixedly installed to the top of the rotating shaft. A lifting sleeve is sleeved on the outside of the rotating rod. The movable end of the pneumatic push rod is fixedly installed to both sides of the lifting sleeve. A lifting groove is opened on the outer circumferential surface of the rotating rod. A lifting protrusion is integrally connected to the inner ring surface of the lifting sleeve. The lifting protrusion is slidably connected to the inside of the lifting groove.

[0006] Optionally, the two racks form a group, and the group of racks meshes with both sides of the same gear. The movable frame is provided with a partition, and the rotating shaft is fixedly installed with two gears located on the upper and lower sides of the partition.

[0007] Optionally, the racks located on the same horizontal plane are arranged in parallel, and the two racks located on the same horizontal plane are symmetrically arranged with the center of the rotation axis as the center of symmetry.

[0008] Optionally, the two sets of racks located on the upper and lower sides of the partition are vertically arranged, and a limiting groove is opened in the middle of the rack. The movable frame and the rack are integrally connected with an intermediate plate at the sliding connection point. The limiting groove is slidably connected to the intermediate plate, and a return spring is provided inside the limiting groove.

[0009] Optionally, one end of the reset spring is fixedly installed to one side of the intermediate plate inside the movable frame, and the other end of the reset spring is fixedly installed to one side of the limiting groove.

[0010] Optionally, a connecting frame located outside the fixed frame is fixedly installed at the end of the telescopic rod, and the clamping head is fixedly installed at the bottom of the connecting frame.

[0011] Optionally, the lifting slide is four evenly arranged spiral grooves, and the rotation angle between the bottom and the top of the lifting slide is an integer multiple of 360 degrees.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The chuck of this CNC machine tool spindle, by setting a clamping head, first uses a cutting tool to process the workpiece on the worktable. After processing, the tool is removed from the spindle using a tool changer. Then, the chuck is taken out of the tool magazine and installed on the spindle. At this time, the pneumatic positioning block and the pneumatic docking block automatically align. The extension and retraction of the pneumatic push rod is controlled by an external pneumatic pressure control device. After the clamping head is aligned with the workpiece, the pneumatic push rod drives the lifting sleeve to move. Then, through the lifting slide and lifting protrusion, the rotating rod and the rotating shaft are rotated. Then, the gear drives the rack to move, and at the same time, the clamping head clamps the workpiece. Then, the spindle moves to transfer the position of the workpiece and removes the workpiece from the worktable, realizing automatic part removal without stopping the machining center. It effectively replaces manual labor or independent robots, improves part removal speed while reducing labor, avoids the long-term debugging of independent robots, saves time, and controls costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a clamping head for a CNC machine tool spindle according to the present invention;

[0015] Figure 2 This is a schematic diagram of the tool holder of the chuck of a CNC machine tool spindle according to the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the clamping head fixing frame for a CNC machine tool spindle according to the present invention;

[0017] Figure 4 This is a schematic diagram of the rotating rod of the clamping head of a CNC machine tool spindle according to the present invention.

[0018] In the diagram: 1. Tool holder; 2. Fixed frame; 3. Movable frame; 4. Telescopic rod; 5. Rotating shaft; 6. Gear; 7. Rack; 8. Connecting frame; 9. Limiting groove; 10. Return spring; 11. Fixed horizontal plate; 12. Clamping head; 13. Rotating rod; 14. Pneumatic push rod; 15. Lifting sleeve; 16. Lifting slide; 17. Lifting protrusion. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1 to 4This utility model provides a clamping head for a CNC machine tool spindle, including a tool holder 1 fixedly installed with the CNC machine tool spindle clamping head. A fixing frame 2 is fixedly installed at the bottom of the tool holder 1. A movable frame 3 is integrally provided in the middle of the fixing frame 2. A rotating shaft 5 is rotatably connected through the middle of the movable frame 3. Two gears 6 are rotatably connected in the middle of the rotating shaft 5. A rack 7 located on both sides of the gears 6 is slidably connected through the movable frame 3. The rack 7 meshes with both sides of the gears 6 respectively. A telescopic rod 4 is integrally provided at one end of the rack 7. The telescopic rod 4 passes through the fixing frame 2. The sliding mechanism includes a clamping head 12 located outside the fixed frame 2 at the end of the telescopic rod 4. A fixed horizontal plate 11 is fixedly installed inside the tool holder 1. A rotating rod 13 is rotatably connected to the middle of the fixed horizontal plate 11. Pneumatic push rods 14 located on both sides of the rotating rod 13 are fixedly installed on the top of the fixed horizontal plate 11. The bottom of the rotating rod 13 is fixedly installed to the top of the rotating shaft 5. A lifting sleeve 15 is sleeved on the outside of the rotating rod 13. The movable end of the pneumatic push rod 14 is fixedly installed to both sides of the lifting sleeve 15. A lifting slide is provided on the outer circumference of the rotating rod 13. The inner ring surface of the groove 16 and the lifting sleeve 15 is integrally connected with a lifting protrusion 17. The lifting protrusion 17 is slidably connected to the inside of the lifting groove 16. By setting a clamping head 12, the workpiece on the worktable is first processed by a tool. After processing, the tool is removed from the spindle by a tool changer. Then, the clamping head is taken out from the tool magazine and installed on the spindle. At this time, the pneumatic positioning block and the pneumatic docking block are automatically docked. The extension and retraction of the pneumatic push rod 14 is controlled by an external pneumatic pressure control device. After the clamping head 12 is aligned with the workpiece, the pneumatic push rod 14... 4 drives the lifting sleeve 15 to move, which in turn drives the rotating rod 13 and the rotating shaft 5 to rotate through the lifting slide 16 and the lifting protrusion 17. Then, the gear 6 drives the rack 7 to move, and the clamping head 12 clamps the workpiece. Then the spindle moves to transfer the position of the workpiece and removes the workpiece from the worktable, realizing automatic part picking without stopping the machining center. It effectively replaces manual labor or independent robots, improves the part picking speed, reduces labor, avoids the long debugging time of independent robots, saves time, and controls costs.

[0021] Two racks 7 form a group, and a group of racks 7 mesh with the two sides of the same gear 6 respectively. The movable frame 3 is equipped with a partition, and the rotating shaft 5 is fixedly installed with two gears 6 located on the upper and lower sides of the partition.

[0022] The racks 7 located on the same horizontal plane are arranged in parallel, and the two racks 7 located on the same horizontal plane are symmetrically arranged with the center of the rotating shaft 5 as the center of symmetry.

[0023] Two sets of racks 7 are vertically arranged on the upper and lower sides of the partition. A limiting groove 9 is opened in the middle of the rack 7. The movable frame 3 and the rack 7 are integrally connected with an intermediate plate at the sliding connection. The limiting groove 9 is slidably connected to the intermediate plate. A return spring 10 is provided inside the limiting groove 9.

[0024] One end of the reset spring 10 is fixedly installed to one side of the middle plate inside the movable frame 3, and the other end of the reset spring 10 is fixedly installed to one side of the limit groove 9.

[0025] The end of the telescopic rod 4 is fixedly installed with a connecting frame 8 located outside the fixed frame 2, and the clamping head 12 is fixedly installed with the bottom of the connecting frame 8.

[0026] The lifting slide 16 consists of four evenly arranged spiral grooves, and the rotation angle between the bottom and the top of the lifting slide 16 is an integer multiple of 360 degrees.

[0027] Working principle:

[0028] First, the workpiece on the worktable is machined using a cutting tool. After machining, the cutting tool is removed from the spindle using a tool changer. Then, the clamping head is taken out of the tool magazine and installed on the spindle. At this time, the pneumatic positioning block and the pneumatic docking block automatically dock. The extension and retraction of the pneumatic push rod 14 is controlled by an external pneumatic pressure control device. After the clamping head 12 is aligned with the workpiece, the pneumatic push rod 14 drives the lifting sleeve 15 to move. Then, the lifting slide 16 and the lifting protrusion 17 drive the rotating rod 13 and the rotating shaft 5 to rotate. Then, the gear 6 drives the rack 7 to move. At the same time, the workpiece is clamped by the clamping head 12. Then, the spindle moves to transfer the position of the workpiece and removes the workpiece from the worktable, realizing automatic part removal.

[0029] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamping head for a CNC machine tool spindle, comprising a tool holder (1) fixedly mounted to the CNC machine tool spindle clamping head, characterized in that, A fixed frame (2) is fixedly installed at the bottom of the knife handle (1). A movable frame (3) is integrally provided in the middle of the fixed frame (2). A rotating shaft (5) is rotatably connected through the middle of the movable frame (3). Two gears (6) are rotatably connected in the middle of the rotating shaft (5). A rack (7) located on both sides of the gear (6) is slidably connected through the movable frame (3). The rack (7) meshes with both sides of the gear (6). A telescopic rod (4) is integrally provided at one end of the rack (7). The telescopic rod (4) is slidably connected through the fixed frame (2). A clamping head (12) located outside the fixed frame (2) is provided at the end of the telescopic rod (4). The knife handle (1) is fixedly installed inside. A fixed horizontal plate (11) is provided, and a rotating rod (13) is rotatably connected to the middle of the fixed horizontal plate (11). Pneumatic push rods (14) located on both sides of the rotating rod (13) are fixedly installed on the top of the fixed horizontal plate (11). The bottom of the rotating rod (13) is fixedly installed to the top of the rotating shaft (5). A lifting sleeve (15) is sleeved on the outside of the rotating rod (13). The movable end of the pneumatic push rod (14) is fixedly installed to both sides of the lifting sleeve (15). A lifting groove (16) is opened on the outer circumferential surface of the rotating rod (13). A lifting protrusion (17) is integrally connected to the inner ring surface of the lifting sleeve (15). The lifting protrusion (17) is slidably connected to the inside of the lifting groove (16).

2. The clamping head for a CNC machine tool spindle according to claim 1, characterized in that, The two racks (7) form a set, and the racks (7) of the set mesh with the two sides of the same gear (6) respectively. The movable frame (3) is provided with a partition, and the rotating shaft (5) is fixedly installed with two gears (6) located on the upper and lower sides of the partition.

3. The clamping head for a CNC machine tool spindle according to claim 2, characterized in that, The racks (7) located on the same horizontal plane are arranged in parallel, and the two racks (7) located on the same horizontal plane are symmetrically arranged with the center of the rotation axis (5) as the center of symmetry.

4. A clamping head for a CNC machine tool spindle according to claim 2, characterized in that, The two sets of racks (7) located on the upper and lower sides of the partition are vertically arranged. A limiting groove (9) is opened in the middle of the rack (7). The movable frame (3) and the rack (7) are integrally connected with an intermediate plate. The limiting groove (9) is slidably connected to the intermediate plate. A reset spring (10) is provided inside the limiting groove (9).

5. A clamping head for a CNC machine tool spindle according to claim 4, characterized in that, One end of the reset spring (10) is fixedly installed with the middle plate inside the movable frame (3) on one side, and the other end of the reset spring (10) is fixedly installed with the limit groove (9) on one side.

6. The clamping head for a CNC machine tool spindle according to claim 1, characterized in that, The end of the telescopic rod (4) is fixedly installed with a connecting frame (8) located outside the fixed frame (2), and the clamping head (12) is fixedly installed with the bottom of the connecting frame (8).

7. A clamping head for a CNC machine tool spindle according to claim 1, characterized in that, The lifting slide (16) consists of four evenly arranged spiral grooves, and the rotation angle between the bottom and the top of the lifting slide (16) is an integer multiple of 360 degrees.

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