A loading and clamping device for a gear tooth machine

Abstract

The utility model discloses a kind of loading clamping devices on gear cutting machine, including base, three-jaw chuck being set on base, the inside of the clamping end of three-jaw chuck is equipped with first pressure sensor, the top of base is equipped with displacement component, the displacement component connects support frame, position component is equipped on support frame, the inside of position component is equipped with measured workpiece, the top of measured workpiece is equipped with limiting component, it is solved that manual operation is difficult to guarantee that workpiece center and chuck center accurately coincide, due to the inconsistency of human visual error and operating hand feeling, a certain position deviation often appears in workpiece during clamping process, worker needs to spend a lot of time to place, observe and adjust workpiece, especially when batch production, each workpiece needs to repeat this tedious process, greatly increase the production cycle problem.

Description

Technical Field

[0001] This utility model relates to the technical field of feeding and clamping devices, specifically a feeding and clamping device for a gear turning machine. Background Technology

[0002] In traditional gear turning machining, the loading and clamping process mainly relies on manual operation. The worker needs to manually place the workpiece to be measured into the approximate position of the three-jaw chuck, then adjust the workpiece's position by visual observation and experience to align it as closely as possible with the chuck's center, and finally operate the chuck to clamp the workpiece. This method has many significant problems.

[0003] Manual operation makes it difficult to ensure that the center of the workpiece and the center of the chuck are precisely aligned. Due to human visual errors and inconsistencies in operating feel, the workpiece often has a certain positional deviation during the clamping process. Workers need to spend a lot of time placing, observing and adjusting the workpiece. Especially in mass production, each workpiece needs to repeat this tedious process, which greatly increases the production cycle.

[0004] Therefore, there is an urgent need to design a gear-turning machine loading and clamping device that can solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a loading and clamping device for a gear turning machine, so as to solve the problem that it is difficult to ensure that the center of the workpiece and the center of the chuck are precisely aligned during manual operation. Due to human visual errors and inconsistencies in operating feel, the workpiece often has a certain positional deviation during the clamping process.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A gear turning machine loading and clamping device includes a base and a three-jaw chuck mounted on the base. The clamping end of the three-jaw chuck is provided with a first pressure sensor. The top of the base is provided with a displacement component. The displacement component is connected to a support frame. The support frame is provided with a position component. The position component is provided with a workpiece to be tested inside. The top of the workpiece to be tested is provided with a limiting component.

[0008] Furthermore, the displacement assembly includes a vertical ball screw structure disposed at the top of the base, the vertical ball screw structure being connected to a horizontal ball screw structure, and the horizontal ball screw structure being connected to an electric push rod.

[0009] The above technical solution enables the displacement of the workpiece in the vertical and horizontal directions, facilitating its alignment with the initial coordinate position of the three-jaw chuck. Simultaneously, the electric push rod enables the workpiece to be horizontally inserted into the initial coordinate of the three-jaw chuck.

[0010] Furthermore, the positioning component includes a V-shaped groove disposed at the top of the support frame, one end of the V-shaped groove is provided with a bracket, the inside of the bracket is provided with a laser rangefinder sensor, and one end of the support frame is connected to a CCD component;

[0011] Through the above technical solution, the V-groove provides a stable placement position for the workpiece to be measured, and the bracket is used to install the laser rangefinder. The laser rangefinder can accurately measure the position information of the center of the workpiece end face, providing data support for subsequent displacement adjustment. Through image recognition technology, the position and posture of the workpiece are further determined, which helps the laser rangefinder to improve the accuracy of workpiece positioning.

[0012] Furthermore, the limiting component includes an L-shaped support plate disposed at the top of the V-groove, an electric telescopic rod at the top of the L-shaped support plate, a pressure plate at the output end of the electric telescopic rod, and a second pressure sensor disposed on the pressure plate;

[0013] With the above technical solution, the pressure plate directly contacts the workpiece, and by pressing the workpiece downward, it prevents the workpiece from shifting during the adjustment process.

[0014] Furthermore, the V-groove has a wear-resistant rubber anti-slip textured layer on both sides of the inclined surface, the support frame has displacement sensors in the vertical and horizontal directions respectively, the electric telescopic rod has a magnetostrictive displacement sensor inside, and the pressure plate is fixed to the output end of the electric telescopic rod by bolts.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention, through a gear-turning machine loading and clamping device, achieves the following effects: 1. It uses a combination of a laser rangefinder and a CCD component to determine the workpiece's position. The laser rangefinder accurately measures the distance from the sensor to the center of the workpiece's end face, and combined with its preset position in the equipment coordinate system, accurately calculates the workpiece's coordinates in the Y direction; the CCD component uses edge detection algorithms and Hough transform to detect circles and determine the workpiece's coordinates in the X direction. This multi-sensor fusion positioning method fully utilizes the advantages of laser measurement and image recognition technology, greatly improving the accuracy of workpiece positioning and ensuring that the workpiece center precisely coincides with the center of the three-jaw chuck; 2. This invention's automated loading and clamping device replaces the tedious manual operations of placing, observing, adjusting, and clamping workpieces. Workers only need to perform simple loading actions, greatly reducing labor intensity. Workers no longer need to maintain high concentration for long periods of time for fine operations. After the first calibration, if the calculation results are correct, the workpiece can be directly pushed in when placing it again, further simplifying the operation process and improving production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall planar structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the planar structure of some components of this utility model;

[0019] Figure 3 This is a schematic diagram of the V-groove assembly of this utility model;

[0020] Figure 4 This is a schematic diagram of the three-jaw chuck of this utility model.

[0021] In the diagram: 1. Base; 101. Three-jaw chuck; 102. First pressure sensor; 2. Displacement assembly; 201. Vertical ball screw structure; 202. Horizontal ball screw structure; 203. Electric push rod; 3. Support frame; 4. Positioning assembly; 401. V-groove; 402. Bracket; 403. Laser rangefinder; 404. CCD assembly; 5. Workpiece to be measured; 6. Limiting assembly; 601. L-shaped support plate; 602. Electric telescopic rod; 603. Pressure plate; 604. Second pressure sensor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0024] Please see Figure 1-4 This embodiment provides a gear turning machine loading and clamping device, including a base 1 and a three-jaw chuck 101 set on the base 1. The clamping end of the three-jaw chuck 101 is provided with a first pressure sensor 102. The top of the base 1 is provided with a displacement component 2. The displacement component 2 is connected to a support frame 3. The support frame 3 is provided with a position component 4. The position component 4 is provided with a workpiece 5 to be tested. The top of the workpiece 5 to be tested is provided with a limiting component 6.

[0025] like Figure 1As shown, the displacement assembly 2 includes a vertical ball screw structure 201 disposed at the top of the base 1, a horizontal ball screw structure 202 connected to the vertical ball screw structure 201, and an electric push rod 203 connected to the horizontal ball screw structure 202.

[0026] The vertical ball screw structure 201 is activated, and the internal ball screw converts the rotational motion into linear motion, driving the connected horizontal ball screw structure 202 and subsequent components to move vertically. A vertical displacement sensor on the support frame 3 monitors the movement distance in real time and feeds the data back to the control system to ensure the accuracy of vertical movement. Similarly, the position of the horizontal support frame 3 is adjusted. When the workpiece 5 to be measured coincides with the initial coordinate position of the three-jaw chuck 101, the electric push rod 203 is activated, providing additional pushing force to accurately insert the workpiece 5 horizontally into the initial coordinate position of the three-jaw chuck 101.

[0027] like Figure 2 and Figure 3 As shown, the positioning component 4 includes a V-shaped groove 401 disposed at the top of the support frame 3. A bracket 402 is provided at one end of the V-shaped groove 401, and a laser rangefinder 403 is disposed inside the bracket 402. One end of the support frame 3 is connected to a CCD component 404. A wear-resistant rubber anti-slip textured layer is provided on the inclined surfaces on both sides of the V-shaped groove 401. Displacement sensors are respectively provided in the vertical and horizontal directions of the support frame 3.

[0028] The workpiece 5 to be measured is placed in the V-groove 401, with a portion extending out of the V-groove 401. After being limited by the limiting component 6, the CCD component 404 further determines the position and orientation of the workpiece through image recognition technology, converts the image information into an electrical signal and transmits it to the control system, assisting the laser range sensor in improving the accuracy of workpiece positioning. The laser range sensor 403 on the bracket 402 emits a laser beam to measure the position information of the center of the workpiece end face and transmits the data to the control system, providing accurate data support for subsequent displacement adjustment.

[0029] like Figure 2 As shown, the limiting assembly 6 includes an L-shaped support plate 601 disposed at the top of the V-groove 401, an electric telescopic rod 602 at the top of the L-shaped support plate 601, a pressure plate 603 at the output end of the electric telescopic rod 602, a second pressure sensor 604 disposed on the pressure plate 603, a magnetostrictive displacement sensor disposed inside the electric telescopic rod 602, and the pressure plate 603 and the output end of the electric telescopic rod 602 are fixed together by bolts.

[0030] The electric telescopic rod 602 on the L-shaped support plate 601 is activated, and the magnetostrictive displacement sensor inside it monitors the displacement at the output end in real time to ensure that the electric telescopic rod accurately moves the pressure plate 603 downward to the appropriate position. The pressure plate 603 contacts and presses against the workpiece 5 to be tested, preventing the workpiece from shifting during the position adjustment process. The second pressure sensor 604 on the pressure plate 603 monitors the pressure of the pressure plate on the workpiece in real time and feeds the pressure data back to the control system to ensure that the clamping force is moderate, which prevents the workpiece from moving and does not damage the workpiece.

[0031] The working process of this utility model is as follows: When using this type of gear turning machine loading and clamping device, the workpiece 5 to be tested is first placed manually in the V-groove 401 of the position component 4, with a portion extending out of the V-groove 401. Then, the electric telescopic rod 602 drives the pressure plate 603 to move downward, pressing the workpiece. The second pressure sensor 604 monitors the clamping force in real time to ensure that the workpiece will not be displaced during subsequent processing. The laser range sensor 403 on the bracket 402 and the CCD component 404 at one end of the support frame 3 start working, accurately determining the position information of the workpiece through laser measurement and image recognition technology, respectively, and transmitting the data to the control system. The control system controls the displacement component 2 to work based on the measured position information. The vertical ball screw structure 201 and the horizontal ball screw structure 202 realize vertical and horizontal movement respectively. During the movement, vertical and horizontal displacement sensors monitor the movement distance in real time and feed it back to the control system to ensure the accuracy of the movement. At this time, the three-jaw chuck 101 is in the open state. The electric push rod 203 assists in inserting the workpiece horizontally into the initial coordinate position of the three-jaw chuck 101. Then, the three jaws retract and clamp the workpiece 5 to be measured.

[0032] Specifically,

[0033] Assume the initial center coordinates of the chuck are (X0, Y0), which are usually preset in the coordinate system of the equipment and do not require real-time detection; the initial center coordinates of the workpiece to be measured are (X1, Y1).

[0034] X1 is obtained by using the CCD component 404 to detect the edge contour of the workpiece 5 under test using an edge detection algorithm, and then using the Hough transform to detect the circle and determine the center coordinates of the circle to obtain X1.

[0035] Y1 is obtained by measuring the distance d in the Y direction from the laser rangefinder 403 to the center of the end face of the workpiece 5. This distance is then combined with the sensor's position (Xs, Ys) in the equipment coordinate system. This position is typically pre-set in the equipment coordinate system and does not require real-time detection.

[0036] The sign of Y1 = Ys ± d depends on the relative position of the sensor and the workpiece 5 to be measured; to align the center of the workpiece 5 with the center of the three-jaw chuck 101, that is, to make (X1, Y1) coincide with (X0, Y0), the displacement components 2 need to move displacements ΔX and ΔY respectively:

[0037] ΔX=X0-X1

[0038] ΔY=Y0-Y1

[0039] Example: The initial center coordinates of the chuck are (X0, Y0) = (100, 100, in mm);

[0040] The position of the laser rangefinder sensor 403 in the device coordinate system is (Xs, Ys) = (80, 120), in mm.

[0041] The laser rangefinder 403 measures a distance d = 25 mm to the center of the end face of the workpiece 5 to be measured. The workpiece 5 is set below the sensor. According to the formula Y1 = Ys - d, the center Y1 coordinate of the workpiece 5 is Y1 = 120 - 25 = 95 mm. The CCD component 404 obtains X1 = 90 mm. Therefore, the initial coordinates of the center of the workpiece are (X1, Y1) = (90, 95).

[0042] Motion calculation: The displacement that the moving component needs to move.

[0043] ΔX=X0-X1=100-90=10mm.

[0044] ΔY = Y0 - Y1 = 100 - 95 = 5 mm;

[0045] That is, the workpiece 5 to be measured needs to be moved vertically by 5mm under the action of the vertical ball screw structure 201, and then moved by 10mm under the action of the horizontal ball screw structure 202, so that it can coincide with the initial center coordinates of the chuck. Subsequently, the electric push rod 203 pushes the workpiece 5 to be measured into the three-jaw chuck 101. At this time, the three-jaw chuck 101 closes and clamps the workpiece 5 to be measured.

[0046] After the first calibration, if the calculation results are correct after repositioning, it can be directly pushed in.

[0047] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is through a controller. The control circuit of the controller can be realized by a person skilled in the art through simple circuit connection. It is common knowledge in the field. Therefore, this application will not explain the control method and circuit connection in detail.

[0048] 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 feeding and clamping device for a gear turning machine, characterized in that: Includes a base (1) and a three-jaw chuck (101) mounted on the base (1). The clamping end of the three-jaw chuck (101) is provided with a first pressure sensor (102). The top of the base (1) is provided with a displacement component (2). The displacement component (2) is connected to a support frame (3). The support frame (3) is provided with a position component (4). The position component (4) is provided with a workpiece to be tested (5). The top of the workpiece to be tested (5) is provided with a limiting component (6).

2. The gear-turning machine feeding and clamping device according to claim 1, characterized in that: The displacement assembly (2) includes a vertical ball screw structure (201) disposed at the top of the base (1), the vertical ball screw structure (201) being connected to a horizontal ball screw structure (202), and the horizontal ball screw structure (202) being connected to an electric push rod (203).

3. The gear-turning machine feeding and clamping device according to claim 1, characterized in that: The position component (4) includes a V-shaped groove (401) set at the top of the support frame (3), a bracket (402) is provided at one end of the V-shaped groove (401), a laser range sensor (403) is provided inside the bracket (402), and a CCD component (404) is connected to one end of the support frame (3).

4. The gear-turning machine feeding and clamping device according to claim 3, characterized in that: The limiting component (6) includes an L-shaped support plate (601) disposed at the top of the V-shaped groove (401), an electric telescopic rod (602) at the top of the L-shaped support plate (601), a pressure plate (603) at the output end of the electric telescopic rod (602), and a second pressure sensor (604) on the pressure plate (603).

5. The gear-turning machine feeding and clamping device according to claim 3, characterized in that: The V-groove (401) has a wear-resistant rubber anti-slip texture layer on both sides of the inclined surface, and the support frame (3) is provided with displacement sensors in the vertical and horizontal directions respectively.

6. The gear-turning machine feeding and clamping device according to claim 4, characterized in that: The electric telescopic rod (602) is equipped with a magnetostrictive displacement sensor inside, and the pressure plate (603) is fixed to the output end of the electric telescopic rod (602) by bolts.

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