Numerical control lathe tool clamping device

Abstract

The utility model provides a numerical control lathe tool clamping device, which belongs to the technical field of numerical control lathes, and comprises a support frame, a mounting frame fixed on two sides of the bottom end of the support frame, lifting structures arranged on two sides inside the support frame, and a clamping mechanism arranged on the mounting frame, the overturning structure comprises a fixing frame installed on one side of the lifting structure, a rotating shaft installed in the rotating shaft, a power assembly arranged on the outer side of the rotating shaft, an installation plate, an installation shell fixed to one side of the rotating shaft and one side of the installation plate, and a hand screwing screw rod is in threaded connection with the interior of one side of the installation shell. The second motor operates to drive the worm to rotate, so that the worm gear drives the mounting plate and the mounting shell to turn over through the rotating shaft, the position of the cutter is adjusted, the cutter switching function of the device is achieved, different cutters can be rapidly switched, time consumed by manual disassembly and assembly is omitted, seamless connection of multiple sets of procedures is facilitated, and the machining period is greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of CNC lathe technology, specifically to a CNC lathe tool clamping device. Background Technology

[0002] The tool clamping device of a CNC lathe is a key component in CNC lathe machining. Its main function is to firmly clamp the tool, ensuring that the tool maintains a precise position and stable posture under high-speed rotation and cutting force, avoiding vibration and displacement, and guaranteeing machining accuracy and surface quality.

[0003] Chinese patent CN213258204U discloses a tool clamping device for a CNC lathe, including a base, a fixing hole, a turntable, and a slide groove. The base has a fixing hole inside, and a rotating mechanism is located at the top of the base. The rotating mechanism includes a fixed seat, a fixing groove, a servo motor, a slide rail, and ball bearings. The turntable is fixedly connected to the top of the rotating mechanism, and the turntable has an adjustment structure inside. The top of the turntable has a slide groove, and the top of the slide groove has a clamping structure. This invention not only features a fixed seat, a fixing groove, a servo motor, a slide rail, and ball bearings, with the servo motor positioned at the center of the fixed seat and its top connected to the center of the turntable to drive the turntable to rotate, but also provides smoother rotation by placing ball bearings between the fixed seat and the turntable, thus enabling angle adjustment of the workpiece and giving the device a rotating function.

[0004] The aforementioned patent still has the following shortcomings: Since existing devices usually install a single type of tool, when dealing with complex workpieces that require multiple processes and multiple tools, it is necessary to frequently change tools or equipment, resulting in low efficiency. For example, when processing shaft parts with holes, grooves, and threads, a single station cannot complete the process at once, and it is necessary to process them step by step on different equipment or stop the machine multiple times to change tools. Utility Model Content

[0005] This utility model provides a CNC lathe tool clamping device that solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] An embodiment of this utility model provides a CNC lathe tool clamping device, including a support frame, and further comprising:

[0008] Mounting brackets are fixed to both sides of the bottom end of the support frame;

[0009] The lifting structure, located on both sides inside the support frame, is used to adjust the height of the cutting tool;

[0010] A flipping structure is provided on one side of the lifting structure. The flipping structure includes a fixed frame installed on one side of the lifting structure, a bearing installed inside the fixed frame, a rotating shaft installed inside the rotating shaft, and a power assembly provided on the outside of the rotating shaft.

[0011] A mounting plate is fixed to one side of the rotating shaft. A mounting shell is fixed to one side of the mounting plate. A hand-tightening screw is threaded into one side of the mounting shell, and a clamping plate that is slidably connected to the mounting shell is rotatably connected to one side of the hand-tightening screw.

[0012] The above technical solution involves installing the device at the machine tool's operating position using a mounting bracket, placing the cutting tool inside the mounting housing, and rotating the hand-tightening screw to clamp and fix the cutting tool in place using a clamping plate. Multiple mounting housings are used to simultaneously fix multiple sets of different types of cutting tools, thus meeting diverse processing needs.

[0013] Furthermore, the power assembly includes a worm gear fixed to the outside of the rotating shaft, a worm rotatably connected to the inside of the bottom end of the fixed frame and meshing with the worm gear, and a second motor installed on one side of the bottom end of the fixed frame and connected to the worm at the end of the output shaft.

[0014] The above technical solution uses a second motor to drive the worm gear to rotate, which in turn causes the worm wheel to rotate via a shaft, thereby adjusting the tool position and enabling rapid tool switching.

[0015] Furthermore, the worm and the worm wheel are located at the same vertical center, and the worm wheel and the rotating shaft are welded together as an integral structure.

[0016] The above technical solutions ensure good tooth surface contact during meshing transmission, smooth transmission without off-center load, reduced transmission noise and wear, and lower energy loss.

[0017] Furthermore, the rotating shaft forms a rotating structure with the fixed frame via a bearing, and the rotating shaft passes through the fixed frame and is connected to the mounting plate.

[0018] The above technical solution reduces the frictional resistance during rotation by supporting the shaft with bearings.

[0019] Furthermore, the lifting structure includes slide rails installed on both sides inside the support frame, lead screws rotatably connected to both sides inside the support frame, threaded sleeves threaded to the outside of the lead screws, a movable seat installed on one side of the threaded sleeves and slidably connected to the slide rails, a first motor installed at the bottom of the support frame and whose output shaft end is connected to one of the lead screws, a synchronous pulley fixed to the top of the lead screws, and a synchronous belt sleeved on the outside of the synchronous pulleys.

[0020] The above technical solution involves a first motor driving a lead screw to rotate, which causes the screw sleeve to move the moving seat up and down along the slide rail, thereby moving the mounting plate and the cutting tool inside the mounting housing up and down.

[0021] Furthermore, the lead screw is provided in two sets, and the two sets of lead screws are symmetrically distributed on the vertical center of the hand-tightening screw.

[0022] The above technical solution allows the power to be evenly distributed to the two lead screws, avoiding localized force concentration, reducing lead screw wear and transmission loss, and extending component life.

[0023] The above-described solution of this utility model has at least the following beneficial effects:

[0024] This invention utilizes a second motor to drive the worm gear to rotate, which in turn causes the worm wheel to rotate via a shaft, thereby adjusting the tool position. This enables the tool switching function of the device, allowing for rapid switching between different tools and eliminating the time-consuming manual disassembly and assembly. This facilitates seamless connection of multiple processes and significantly reduces the processing cycle.

[0025] This invention uses a first motor to drive a lead screw to rotate, which causes the screw sleeve to move the moving seat up and down along the slide rail. This, in turn, causes the mounting plate and the cutting tool inside the mounting housing to move up and down, thereby realizing the position adjustment function of this device. It can accurately position the height of the cutting tool, maintain the optimal contact distance between the cutting tool and the workpiece surface, and avoid uneven cutting force and excessive vibration caused by height deviation. Attached Figure Description

[0026] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0027] Figure 2 This is the second schematic diagram of the structure of this utility model;

[0028] Figure 3 A three-dimensional structural diagram of the flipping structure provided by this utility model;

[0029] Figure 4 This is a three-dimensional cross-sectional structural diagram of the flipping structure provided by this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Support frame; 2. Mounting housing; 3. Mounting bracket; 4. Hand-tightening screw; 5. Clamping plate; 6. Lifting structure; 601. Slide rail; 602. Synchronous pulley; 603. Synchronous belt; 604. First motor; 605. Moving seat; 606. Lead screw; 607. Screw sleeve; 7. Mounting plate; 8. Tilting structure; 801. Fixed frame; 802. Rotating shaft; 803. Bearing; 804. Worm gear; 805. Second motor; 806. Worm wheel. Detailed Implementation

[0032] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0033] like Figures 1 to 4 As shown, an embodiment of this utility model provides a CNC lathe tool clamping device, including a support frame 1, and further comprising:

[0034] Mounting bracket 3 is fixed to both sides of the bottom end of support bracket 1;

[0035] The lifting structure 6 is located on both sides inside the support frame 1 and is used to adjust the height of the cutting tool.

[0036] The tilting structure 8 is disposed on one side of the lifting structure 6. The tilting structure 8 includes a fixed frame 801 installed on one side of the lifting structure 6, a bearing 803 installed inside the fixed frame 801, a rotating shaft 802 installed inside the rotating shaft 802, and a power assembly disposed on the outside of the rotating shaft 802.

[0037] Mounting plate 7 is fixed to one side of rotating shaft 802. Mounting shell 2 is fixed to one side of mounting plate 7. Hand screw 4 is connected to the internal thread of one side of mounting shell 2. Clamping plate 5 is rotatably connected to mounting shell 2 on one side of hand screw 4.

[0038] In this embodiment of the utility model, the support frame 1 provides support for other parts, and the mounting frame 3 installs the device in the machine tool's operating position to ensure stable installation. The cutting tool is placed inside the mounting shell 2, and the hand screw 4 is rotated to push the clamping plate 5 toward the cutting tool, clamping and fixing the cutting tool's position to ensure that the cutting tool's position is stable during processing. Multiple sets of mounting shells 2 are used to simultaneously fix multiple sets of different types of cutting tools to meet diverse processing needs.

[0039] like Figures 3 to 4 As shown, the power assembly includes a worm gear 806 fixed to the outside of the rotating shaft 802, a worm 804 rotatably connected to the inside of the bottom end of the fixed frame 801 and meshing with the worm gear 806, and a second motor 805 installed on one side of the bottom end of the fixed frame 801 and connected to the output shaft end and the worm 804. The worm 804 and the worm gear 806 are located at the same vertical center. The worm gear 806 and the rotating shaft 802 are welded together. The rotating shaft 802 forms a rotating structure with the fixed frame 801 through the bearing 803. The rotating shaft 802 passes through the fixed frame 801 and is connected to the mounting plate 7.

[0040] In this embodiment of the utility model, the second motor 805 drives the worm 804 to rotate. Since the worm 804 is meshed with the worm wheel 806, the rotation of the worm 804 drives the worm wheel 806 to rotate. At the same time, the worm wheel 806 drives the mounting plate 7 and the mounting shell 2 to flip through the rotating shaft 802, thereby adjusting the tool position and realizing the rapid switching of the tool. The rotating shaft 802 is supported by the bearing 803 to reduce the frictional resistance when it rotates.

[0041] like Figure 2 As shown, the lifting structure 6 includes slide rails 601 installed on both sides inside the support frame 1, lead screws 606 rotatably connected to both sides inside the support frame 1, threaded sleeves 607 threaded to the outside of the lead screws 606, a movable seat 605 installed on one side of the threaded sleeves 607 and slidably connected to the slide rails 601, a first motor 604 installed at the bottom of the support frame 1 and whose output shaft end is connected to one of the lead screws 606, a synchronous pulley 602 fixed to the top of the lead screws 606, and a synchronous belt 603 sleeved on the outside of the synchronous pulleys 602. There are two sets of lead screws 606, and the two sets of lead screws 606 are symmetrically distributed on the vertical center of the hand-tightening screw 4.

[0042] In this embodiment of the utility model, the first motor 604 drives one set of lead screws 606 to rotate inside the support frame 1. At the same time, the lead screw 606 drives the synchronous wheel 602 at the top of the other set of lead screws 606 to rotate via the synchronous wheel 602 at the top and the synchronous belt 603, thereby making the two sets of lead screws 606 rotate synchronously. Then, under the action of the rotation of the lead screws 606, the screw sleeve 607 drives the moving seat 605 to slide up and down along the slide rail 601, thereby driving the tool in the mounting plate 7 and the mounting shell 2 to move up and down, realizing the precise adjustment of the tool height to meet the requirements of different processing steps for tool height.

[0043] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A tool clamping device for a CNC lathe, comprising a support frame (1), characterized in that, Also includes: Mounting bracket (3) is fixed to both sides of the bottom end of support bracket (1); The lifting structure (6) is set on both sides inside the support frame (1) and is used to adjust the height of the tool; A flipping structure (8) is provided on one side of the lifting structure (6). The flipping structure (8) includes a fixed frame (801) installed on one side of the lifting structure (6), a bearing (803) installed inside the fixed frame (801), a rotating shaft (802) installed inside the rotating shaft (802), and a power assembly provided on the outside of the rotating shaft (802). Mounting plate (7) is fixed on one side of rotating shaft (802). Mounting shell (2) is fixed on one side of mounting plate (7). A hand screw (4) is threadedly connected to the inside of one side of mounting shell (2). A clamp (5) that is slidably connected to mounting shell (2) is rotatably connected to one side of hand screw (4).

2. The CNC lathe tool clamping device according to claim 1, characterized in that, The power assembly includes a worm gear (806) fixed to the outside of the rotating shaft (802), a worm (804) rotatably connected to the inside of the bottom end of the fixed frame (801) and meshing with the worm gear (806), and a second motor (805) installed on one side of the bottom end of the fixed frame (801) and connected to the worm (804) at the end of the output shaft.

3. The CNC lathe tool clamping device according to claim 2, characterized in that, The worm (804) and the worm wheel (806) are located at the same vertical center, and the worm wheel (806) and the rotating shaft (802) are welded together as an integral structure.

4. The CNC lathe tool clamping device according to claim 2, characterized in that, The rotating shaft (802) forms a rotating structure with the fixed frame (801) through the bearing (803), and the rotating shaft (802) passes through the fixed frame (801) and is connected to the mounting plate (7).

5. A CNC lathe tool clamping device according to claim 1, characterized in that, The lifting structure (6) includes a slide rail (601) installed on both sides inside the support frame (1), a lead screw (606) rotatably connected to both sides inside the support frame (1), a threaded sleeve (607) threaded to the outside of the lead screw (606), a movable seat (605) installed on one side of the threaded sleeve (607) and slidably connected to the slide rail (601), a first motor (604) installed at the bottom of the support frame (1) and connected to one of the lead screws (606) at the end of the output shaft, a synchronous pulley (602) fixed at the top of the lead screw (606), and a synchronous belt (603) sleeved on the outside of the synchronous pulley (602).

6. A CNC lathe tool clamping device according to claim 5, characterized in that, The lead screw (606) is provided in two sets, and the two sets of lead screws (606) are symmetrically distributed on the vertical center of the hand-tightening screw (4).

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