Clamp tool for machining worm gear

Abstract

The utility model provides a clamp tool for machining a worm gear, and belongs to the technical field of worm gear machining. Comprising a turntable; the plurality of fine adjustment parts are arranged on the rotating disc, and each fine adjustment part comprises a moving frame arranged on the rotating disc; the servo motor is arranged on the moving frame; the ball screw is arranged in the moving frame; and the nut is sleeved on the ball screw in a threaded manner. Through the arrangement of the inductor, the fine adjustment part and the control panel, in the worm gear machining process, temperature changes of the worm gear are monitored at any time, monitored data are transmitted to the control panel to be analyzed, and therefore fine adjustment is conducted on the position of the worm gear body, accurate machining is guaranteed, the position of the worm gear body is continuously adjusted through monitoring, analysis and execution, and machining precision is improved. It is ensured that the worm gear body is always kept at the ideal machining position in the machining process, and therefore it is ensured that a cutter works according to the preset cutting track, and the final machining precision is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of worm gear processing, in particular to a fixture for processing worm gears. Background Art

[0002] In the automotive manufacturing, aerospace, shipbuilding, precision instruments and equipment and other industries, worm gears are widely used in transmission systems. For example, in the manufacturing process of worm gear reducers, elevator traction machines, steering systems, lifting mechanisms and other parts, special worm gear fixtures are required to accurately fix the worm gear blanks in order to perform precision turning, milling, grinding and other processing operations.

[0003] During the cutting process, the tool and the turbine material are in strong contact and friction, generating a large amount of heat. Part of this heat is absorbed by the tool, and part is transferred to the turbine material and the fixture. Due to heat conduction and accumulation, the temperature of the turbine material rises. According to the thermal expansion coefficient of the material, the turbine will undergo thermal expansion, resulting in slight changes in the originally positioned position of the turbine, such as axial movement or radial expansion. These changes are sufficient to affect the final dimensional accuracy and form and position tolerances in precision machining. Due to slight changes in position, the subsequent cutting trajectory of the tool no longer conforms to the predetermined machining path, resulting in reduced accuracy of important parameters such as worm gear tooth shape and pitch. Therefore, the present application provides a fixture and tooling for machining worm gears to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a fixture for processing a worm gear so as to solve the problem that in the existing turbine processing process, thermal deformation causes a slight change in the turbine position, thereby affecting the final dimensional accuracy and shape and position tolerance.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A fixture for processing a worm gear comprises: a turntable; a plurality of fine-tuning parts arranged on the turntable, the fine-tuning parts comprising: a moving frame arranged on the turntable; a servo motor arranged on the moving frame; a ball screw arranged in the moving frame; a nut threadedly sleeved on the ball screw; used for precise movement during turbine processing; a fixed rod slidably arranged on the moving frame, and the bottom of the fixed rod is connected to the nut, the bottom of the fixed rod is in an inverted cone shape, used for placing the turbine; a sensor arranged above the turntable; used for sensing temperature changes of the turbine during turbine processing.

[0007] It also includes: a rotating sleeve, which is arranged at the center of the top of the rotating disk; an L-shaped rod, which is movably arranged on the rotating sleeve, and one side of the L-shaped rod is connected to the sensor.

[0008] One side of the ball screw passes through the moving frame and is connected to the output end of the servo motor.

[0009] It also includes: a workbench, which is arranged at the bottom of the turntable, and the turntable is in sliding contact with the workbench.

[0010] It also includes: a control panel, which is arranged on the workbench and is used to control the operation of the fixture.

[0011] It also includes: a placement groove, which is arranged at the center of the top of the workbench; a stepper motor, which is arranged in the placement groove, and the output end of the stepper motor is connected to the turntable.

[0012] It also includes: a worm wheel body, which is sleeved on the fixing rod; and a fixed elastic pad, which is threadedly sleeved on the fixing rod and is in contact with the worm wheel body.

[0013] Compared with the prior art, the utility model has at least the following beneficial effects:

[0014] In the above scheme, by setting up sensors, fine-tuning parts and control panels, the temperature changes of the worm gear are monitored at all times during the worm gear processing, and the monitored data is transmitted to the control panel for analysis, so as to fine-tune the position of the worm gear body to ensure precise processing. Through monitoring, analysis and execution, the position of the worm gear body is continuously adjusted to ensure that the worm gear body always remains in the ideal processing position during the processing, thereby ensuring that the tool works according to the predetermined cutting trajectory and ensuring the final processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0016] Figure 1 The three-dimensional structure diagram of the fixture for processing the worm gear;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the workbench;

[0018] Figure 3 It is a cross-sectional view of the three-dimensional structure of the fine-tuning part;

[0019] Figure 4 Schematic diagram of the fixed rod structure.

[0020] [reference numerals]

[0021] 1. Workbench; 2. Rotating sleeve; 3. Turntable; 4. Fixed elastic pad; 5. Fine adjustment part; 6. Sensor; 7. L-shaped rod; 8. Control panel; 9. Placement slot; 10. Stepper motor; 11. Worm gear body; 12. Fixed rod; 51. Servo motor; 52. Ball screw; 53. Nut; 54. Moving frame.

[0022] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0023] The following is a detailed description of a worm gear processing fixture provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0024] like Figure 1 and Figure 3 As shown, an embodiment of the utility model provides a fixture for processing a worm gear, comprising: a turntable 3; a plurality of fine-tuning parts 5, which are arranged on the turntable 3, and the fine-tuning parts 5 include: a moving frame 54, which is arranged on the turntable 3; a servo motor 51, which is arranged on the moving frame 54; a ball screw 52, ​​which is arranged in the moving frame 54; a nut 53, which is threadedly sleeved on the ball screw 52; used for precise movement during turbine processing; a fixed rod 12, which is slidably arranged on the moving frame 54, and the bottom of the fixed rod 12 is connected to the nut 53, and the bottom of the fixed rod 12 is in an inverted cone shape, which is used for placing the turbine; a sensor 6, which is arranged above the turntable 3; used for sensing the temperature change of the turbine during turbine processing.

[0025] By setting a fixing rod 12, the bottom of the fixing rod 12 is designed in an inverted cone shape, which helps to quickly and accurately place the worm wheel body 11. At the same time, this design can adapt to worm wheel bodies 11 with different diameter ranges, provide adaptive adjustment within a certain range, and ensure that worm wheel bodies 11 of different specifications can be properly fixed; by setting a sensor 6, the temperature changes of the worm wheel and the tool during the cutting process are monitored in real time, so as to obtain real-time data of thermal deformation, and then transmit the monitored data to the control panel 8 for feedback.

[0026] like Figure 1As shown, it also includes: a rotating sleeve 2, which is arranged at the center of the top of the rotating disk 3; an L-shaped rod 7, which is movably arranged on the rotating sleeve 2, and one side of the L-shaped rod 7 is connected to the sensor 6.

[0027] By setting the rotating sleeve 2, the rotating sleeve 2 rotates with the turntable 3, and the rotating sleeve 2 is movably connected to the L-shaped rod 7, so that when the rotating sleeve 2 rotates, the L-shaped rod 7 will not rotate with the rotating sleeve 2, thereby remaining fixed and not affecting the normal use of the sensor 6.

[0028] like Figure 3 As shown, one side of the ball screw 52 passes through the moving frame 54 and is connected to the output end of the servo motor 51 .

[0029] By setting the ball screw 52, ​​the ball screw 52 is fixedly connected to the output end of the servo motor 51, and the servo motor 51 is controlled by an external current to rotate, driving the ball screw 52 to move synchronously, so that the position of the worm gear can be quickly and accurately adjusted in a short time.

[0030] like Figure 1 As shown, it also includes: a workbench 1, which is arranged at the bottom of the turntable 3, and the turntable 3 is in sliding contact with the workbench 1.

[0031] By setting up the workbench 1, the worm gear fixture can be placed. At the same time, support columns are set at the four corners of the bottom of the workbench 1. The support columns are made of metal material, have good firmness, are not easy to deform, and can disperse the pressure on the workbench 1.

[0032] like Figure 1 As shown, it also includes: a control panel 8, which is arranged on the workbench 1 and is used to control the operation of the fixture.

[0033] By setting up a control panel 8, the control panel 8 receives the temperature data transmitted by the sensor 6, and calculates according to a preset thermal expansion coefficient model to determine whether the position change of the worm gear body 11 exceeds the allowable range due to thermal expansion, and monitors the key parameters of the processing process in real time to prevent and correct potential processing errors in advance.

[0034] like Figure 1 and Figure 2 As shown, it also includes: a placement groove 9, which is arranged at the center of the top of the workbench 1; a stepper motor 10, which is arranged in the placement groove 9, and the output end of the stepper motor 10 is connected to the turntable 3.

[0035] By setting a stepper motor 10, the stepper motor 10 is fixedly connected to the turntable 3. The stepper motor 10 rotates to drive the turntable 3 to move synchronously, so that the processed worm gear body 11 is separated from the processing equipment, and a new worm gear body 11 is moved to the side of the processing equipment for continuous processing.

[0036] like Figure 3 As shown, it also includes: a worm wheel body 11, which is sleeved on the fixing rod 12; and a fixed elastic pad 4, which is threadedly sleeved on the fixing rod 12 and contacts with the worm wheel body 11.

[0037] By setting the fixed elastic pad 4, the fixed elastic pad 4 can absorb and disperse the stress generated by mechanical vibration, impact or thermal expansion and contraction during the processing, thereby protecting the worm wheel body 11 from damage and ensuring its stability during the processing; at the same time, due to its elastic characteristics, the fixed elastic pad 4 can adapt to worm wheel bodies 11 of different sizes and shapes, providing a certain adaptive adjustment space to ensure that the worm wheel body 11 will not be deformed due to excessive tightening during the clamping process, and will not affect the processing accuracy due to excessive looseness.

[0038] The technical solution provided by the utility model is to place the worm wheel body 11 on the fixing rod 12, and then fix the worm wheel body 11 by fixing the elastic pad 4, use the control panel 8 to start the stepper motor 10 to drive the turntable 3 to rotate, and move the worm wheel body 11 to the processing equipment for processing. During the processing, the control panel 8 is used to start the sensor 6 and the servo motor 51 to operate, and the temperature data collected by the sensor 6 is transmitted to the control panel 8. The control panel 8 calculates the possible thermal expansion value of the worm wheel according to the preset thermal expansion coefficient model, and determines whether it exceeds the allowable range. When it is detected that the position change caused by the thermal expansion exceeds the threshold, the servo motor 51 rotates, drives the ball screw 52 to rotate, and drives the fixing rod 12 to move through the nut 53, so as to fine-tune the position of the worm wheel body 11 to ensure precision processing; when a worm wheel body 11 is processed, the stepper motor 10 runs, drives the turntable 3 to rotate, so that the processed worm wheel body 11 is separated from the processing equipment, and the new worm wheel body 11 is moved to the processing equipment for continuous processing.

[0039] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fixture for machining a worm gear, characterized in that: include: Turntable (3); A plurality of fine-tuning parts (5) are arranged on the rotating disk (3), and the fine-tuning parts (5) include: A moving frame (54) is arranged on the rotating disk (3); A servo motor (51) is arranged on the moving frame (54); A ball screw (52) is arranged in the moving frame (54); A nut (53) is threadedly sleeved on the ball screw (52) and is used for precise movement during turbine machining; A fixed rod (12) is slidably arranged on the movable frame (54), and the bottom of the fixed rod (12) is connected to the nut (53). The bottom of the fixed rod (12) is in an inverted cone shape and is used to place a turbine. The sensor (6) is arranged above the rotating disk (3) and is used to sense the temperature change of the turbine during the turbine processing.

2. The fixture for machining worm gear according to claim 1, characterized in that: Also includes: A rotating sleeve (2) is arranged at the center of the top of the rotating disk (3); an L-shaped rod (7) is movably arranged on the rotating sleeve (2), and one side of the L-shaped rod (7) is connected to the sensor (6).

3. The fixture for machining worm gear according to claim 1, characterized in that: One side of the ball screw (52) passes through the moving frame (54) and is connected to the output end of the servo motor (51).

4. The fixture for machining worm gears according to claim 1, characterized in that: Also includes: The workbench (1) is arranged at the bottom of the turntable (3), and the turntable (3) is in sliding contact with the workbench (1).

5. The fixture for machining worm gear according to claim 4, characterized in that: Also includes: A control panel (8) is arranged on the workbench (1) and is used to control the operation of the fixture.

6. The fixture for machining worm gears according to claim 4, characterized in that: Also includes: A placement groove (9) is arranged at the center of the top of the workbench (1); a stepper motor (10) is arranged in the placement groove (9), and an output end of the stepper motor (10) is connected to the turntable (3).

7. The fixture for machining worm gears according to claim 1, characterized in that: Also includes: The worm wheel body (11) is sleeved on the fixing rod (12); the fixed elastic pad (4) is threadedly sleeved on the fixing rod (12) and is in contact with the worm wheel body (11).

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