Positioning device for gear machining

Abstract

The utility model relates to the technical field of positioning devices, in particular to a gear machining positioning device which comprises a working table, a plurality of sets of guide seats are fixedly connected to the working table, sliding plates are connected into the guide seats in a sliding mode, positioning teeth are fixedly connected to one ends of the sliding plates, and a plurality of sets of eccentric discs are rotationally connected to the working table. The exterior of the eccentric disc is rotationally connected with a connecting rod, one end of the connecting rod is hinged to the sliding plate, a driving assembly for driving the eccentric disc to rotate synchronously is arranged in the workbench, and when the eccentric disc rotates, the connecting rod can push the sliding plate to slide in the guide base in a reciprocating mode through the eccentric characteristic of the eccentric disc, and then the positioning teeth are driven to be close to or away from the gear to be machined; and the positioning teeth abut against and are clamped with the tooth grooves in the gear to be machined, so that more external areas of the gear cannot be occupied, and the gear can be conveniently machined.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning device technical field especially a gear machining positioning device. BACKGROUND

[0002] In the field of gear machining, gear machining positioning device is indispensable. As the core component of mechanical transmission system, the machining precision of gear directly affects the running performance, transmission efficiency and service life of mechanical equipment. Whether it is an automobile engine, machine tool transmission system or gear in precision instruments, it requires extremely high machining precision to ensure the smoothness and accuracy of transmission.

[0003] However, in the process of gear machining, lack of accurate positioning will lead to deviation of key parameters such as gear shape, gear pitch and coaxiality. These deviations not only cause vibration and noise of gear during transmission, reduce transmission efficiency, but also may cause premature wear and breakage of gear, seriously affecting the reliability and safety of mechanical equipment. Gear machining positioning device can accurately fix the gear to be machined on the workbench, ensuring that the gear is always in the correct position during cutting, grinding and other machining processes, thereby ensuring machining precision.

[0004] In the prior art, a positioning device for transmission gear machining is disclosed in Chinese patent No. CN212286168U, which comprises a base, four groups of electric push rods are arranged on the top of the base, and an operating table is arranged on the top of the electric push rod, two installation plates are fixedly installed on the top of the operating table, second threaded rods are rotatably installed on the installation plates, clamping plates are arranged on the inner sides of the second threaded rods, second adjusting wheels are arranged on the two sides of the second threaded rods, and second shafts are arranged on the second adjusting wheels.

[0005] In the patent, the structure of the clamping plate is relatively large, and clamping the gear will cause a large obstruction to the external area of the gear, thereby making it inconvenient for further machining of the gear. UTILITY MODEL CONTENTS

[0006] In view of the technical problems in the background art, the utility model provides a gear machining positioning device.

[0007] The technical scheme adopted by the utility model is as follows: a gear machining positioning device, comprising a workbench, a plurality of guide seats are fixedly connected to the workbench, a sliding plate is slidably connected in the guide seat, a positioning tooth is fixedly connected to one end of the sliding plate, a plurality of eccentric discs are rotatably connected to the workbench, a connecting rod is rotatably connected to the outside of the eccentric disc, one end of the connecting rod is hinged to the sliding plate, and a driving assembly for driving the eccentric disc to rotate synchronously is arranged in the workbench.

[0008] In one embodiment, the positioning tooth is in trapezoidal or conical structure.

[0009] In one of the embodiments, a plurality of rotating rods are rotatably connected to the workbench, and the rotating rods are coaxially and fixedly connected with the eccentric disc.

[0010] In one of the embodiments, a first driving gear is fixedly connected to the outer part of the rotating rod, and a second driving gear is rotatably connected to the workbench, and the first driving gear and the second driving gear are in meshing engagement.

[0011] In one of the embodiments, the driving assembly is a motor fixedly connected to the bottom of the workbench, and the output end of the motor is fixedly connected with the second driving gear.

[0012] In one of the embodiments, the driving assembly is a worm gear fixedly connected to the outer part of the second driving gear and a worm rotatably connected to the workbench, and a rotating shaft is rotatably connected to the workbench, and the worm is fixedly connected with the rotating shaft, and the worm gear is in meshing engagement with the worm.

[0013] In one of the embodiments, a hand wheel is fixedly connected to the outer part of one end of the rotating shaft.

[0014] Compared with the prior art, in the utility model, a plurality of guide seats are fixed on the workbench to provide a precise sliding track for the sliding plate, ensure that the sliding plate maintains linearity and stability during movement, avoid deviation or shaking, and thus ensure the accuracy of positioning. When the eccentric disc rotates, the eccentricity of the eccentric disc enables the connecting rod to push the sliding plate to reciprocatingly slide in the guide seat, and thus drive the positioning teeth to approach or move away from the gear to be machined. The positioning teeth are in abutting engagement with the tooth grooves in the gear to be machined, so that the gear is not occupied in a larger external area, and the gear is conveniently machined. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the utility model;

[0016] Figure 2 is a structural schematic view of the workbench in the utility model;

[0017] Figure 3 is a structural schematic view of the guide seat on the workbench in the utility model;

[0018] Figure 4 is a structural schematic view of the sliding plate on the workbench in the utility model;

[0019] Figure 5 is a structural schematic view of the first driving gear and the second driving gear in the utility model.

[0020] Marked as: 1, workbench; 2, guide seat; 3, slide plate; 4, positioning tooth; 5, connecting rod; 6, eccentric disc; 7, first drive gear; 8, second drive gear; 9, worm wheel; 10, worm; 11, hand wheel; 12, rotating shaft; 13, rotating rod. DETAILED DESCRIPTION

[0021] In the description of the present application, it should be pointed out that the terms "front", "upper", "lower", "left", "right", "vertical", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0022] In the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] The following will be described in detail with reference to the accompanying drawings Figures 1-5 Further illustrate the present application.

[0024] In order to solve the problems in the background art, the present application proposes the following technical solutions: A gear machining positioning device, comprising a workbench 1, a plurality of guide seats 2 are fixedly connected on the workbench 1, a sliding plate 3 is slidably connected in the guide seat 2, a positioning tooth 4 is fixedly connected at one end of the sliding plate 3, the positioning tooth 4 is in trapezoidal or conical structure, a plurality of eccentric discs 6 are rotatably connected on the workbench 1, a connecting rod 5 is rotatably connected outside the eccentric disc 6, one end of the connecting rod 5 is hinged with the sliding plate 3, and a driving assembly for driving the eccentric disc 6 to rotate synchronously is arranged in the workbench 1; In the gear machining process, accurate positioning is the key link to ensure the machining precision and product quality. A plurality of guide seats 2 are fixed on the workbench 1, which provides a precise sliding track for the sliding plate 3, ensures that the sliding plate 3 maintains linearity and stability during movement, avoids deviation or shaking, and thus ensures the accuracy of positioning. The positioning tooth 4 at one end of the sliding plate 3 adopts trapezoidal or conical structure, which can closely match the tooth groove of the gear to be machined, increase the contact area, and effectively enhance the stability of positioning by using the wedge effect generated by the inclined surface. A plurality of eccentric discs 6 are arranged on the workbench 1 and are hinged with the sliding plate 3 through the connecting rod 5, forming a unique transmission mechanism. When the eccentric disc 6 rotates, its eccentric characteristic enables the connecting rod 5 to push the sliding plate 3 to reciprocate in the guide seat 2, thereby driving the positioning tooth 4 to approach or move away from the gear to be machined. This clever structural design converts the circular motion of the eccentric disc 6 into the linear motion of the sliding plate 3, achieving automatic adjustment of the positioning tooth 4. Compared with traditional positioning devices, this design does not require complex manual adjustment process, and the operator only needs to control the driving assembly to quickly realize the positioning of the gear, greatly improving the positioning efficiency.

[0025] Further design, the workbench 1 is rotatably connected with a plurality of groups of rotating rods 13, the rotating rod 13 is fixedly connected coaxially with the eccentric disc 6, the rotating rod 13 is fixedly connected with the first drive gear 7 outside, the workbench 1 is rotatably connected with the second drive gear 8, the first drive gear 7 and the second drive gear 8 are meshed with each other;This part of structure builds the transmission system inside the device, ensures that the power of the driving assembly can be effectively transmitted to the eccentric disc 6. The plurality of groups of rotating rods 13 rotatably connected in the workbench 1 are fixed coaxially with the eccentric disc 6, so that the rotating rod 13 can directly drive the eccentric disc 6 to rotate synchronously when rotating, ensuring the directness and stability of power transmission. The first drive gear 7 and the second drive gear 8 are meshed with each other outside the rotating rod 13, forming a gear transmission pair. Gear transmission has the advantages of accurate transmission ratio, high transmission efficiency, reliable work, etc., which can stably and accurately transmit power. When the second drive gear 8 rotates, it can drive the plurality of groups of rotating rods 13 to rotate synchronously through the meshing with the first drive gear 7, and then make the eccentric disc 6 work simultaneously. This design realizes the cooperative operation of multiple eccentric discs 6, ensures that all positioning teeth 4 can act synchronously, and uniformly positions and clamps the gear. Compared with a single positioning tooth 4 or an asynchronous positioning mode, this structure can provide more balanced clamping force, effectively prevent the gear from shifting or deforming due to uneven stress during machining, and ensure the precision and stability of gear machining.

[0026] Further design, the driving assembly is a worm wheel 9 fixedly connected outside the second drive gear 8 and a worm 10 rotatably connected in the workbench 1, a rotating shaft 12 is rotatably connected in the workbench 1, the worm 10 is fixedly connected with the rotating shaft 12, the worm wheel 9 is meshed with the worm 10, and the rotating shaft 12 is fixedly connected with a hand wheel 11 outside the workbench 1. This driving assembly adopts a worm wheel 9 and worm 10 transmission mode, which provides a stable and easy-to-operate power source for the entire positioning device. The worm wheel 9 is fixed outside the second drive gear 8 and meshed with the worm 10. The worm wheel 9 and worm 10 transmission has the characteristics of compact structure, large transmission ratio and good self-locking performance. When the operator rotates the hand wheel 11 outside the workbench 1, the hand wheel 11 drives the rotating shaft 12 to rotate, and then the worm 10 rotates. The rotation of the worm 10 drives the worm wheel 9 to rotate through meshing, and the worm wheel 9 drives the second drive gear 8, thereby realizing the operation of the entire transmission system. The large transmission ratio makes the operator only need to rotate the hand wheel 11 with small force to generate enough power to drive the eccentric disc 6 and the positioning tooth 4 to act, which is very labor-saving. Its self-locking performance ensures that after positioning is completed, even if external force acts on the gear or the device, the worm wheel 9 and the worm 10 will not rotate by themselves, ensuring that the positioning tooth 4 always maintains the clamping state of the gear, effectively preventing the gear from loosening, and further improving the reliability of positioning. This driving mode not only is simple and convenient to operate, but also has low technical requirements for the operator, and can also meet the positioning needs of gears of different specifications, which has strong universality and practicality.

[0027] In another embodiment, the driving assembly is a motor fixedly connected to the bottom of the workbench 1, and the output end of the motor is fixedly connected with the second driving gear 8; this embodiment adopts a direct driving mode of the motor, and provides a driving scheme with higher automation degree for the positioning device. The motor is fixed to the bottom of the workbench 1, and the output end thereof is directly connected with the second driving gear 8, so that the intermediate transmission link is reduced, and power transmission is more direct and efficient. The motor has advantages of rapid starting, stable rotating speed and convenient control. By controlling the start-stop and rotating speed of the motor, the rotation of the second driving gear 8 can be accurately controlled, and then the accurate control of the action of the positioning tooth 4 can be realized. In actual production, the operator can adjust the clamping force and speed of the positioning tooth 4 by adjusting the parameters of the motor according to different production requirements and gear specifications, so that the production efficiency is greatly improved. Compared with the manual driving mode, the motor driving does not need continuous manual operation, reduces the labor intensity of the operator, and also avoids positioning errors caused by manual operation fatigue.

[0028] The use method of the utility model is as follows:

[0029] The gear to be machined is placed on the workbench 1, the hand wheel 11 drives the rotating shaft 12 and the worm 10 to rotate, the worm 10 drives the worm wheel 9 to rotate, the worm wheel 9 drives the second driving gear 8 to rotate, the second driving gear 8 drives the first driving gear 7 to rotate, the first driving gear 7 drives the rotating rod 13 to rotate, the rotating rod 13 drives the eccentric disc 6 to rotate, the eccentric disc 6 drives the connecting rod 5 to work, the connecting rod 5 drives the sliding plate 3 to slide, and the sliding plate 3 drives the positioning tooth 4 to abut against and be positioned outside the gear to be machined (the positioning tooth 4 abuts against in the tooth groove of the gear to be machined), so that the gear to be machined can be clamped and fixed.

[0030] In the utility model, the gear to be machined can be quickly and conveniently fixed, and a larger area of the gear to be machined is not occupied.

[0031] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein, and the contents not described in detail in the description belong to the prior art known to the person skilled in the art.

[0032] Although the embodiments of the utility model have been shown and described, the scope of the utility model is defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A gear machining positioning device, characterized by, Including workbench (1), the workbench (1) is fixedly connected with multiple groups of guide seat (2), the guide seat (2) is slidably connected with slide plate (3), one end of the slide plate (3) is fixedly connected with positioning tooth (4), the workbench (1) is rotatably connected with multiple groups of eccentric disc (6), the outside of the eccentric disc (6) is rotatably connected with connecting rod (5), one end of the connecting rod (5) is hinged with slide plate (3), the workbench (1) is equipped with drive assembly that drives eccentric disc (6) synchronous rotation.

2. A gear machining positioning device according to claim 1, wherein, The positioning tooth (4) is trapezoidal or conical structure.

3. A gear machining positioning device according to claim 1, wherein The workbench (1) is rotatably connected with multiple groups of rotating rod (13), the rotating rod (13) is coaxially fixedly connected with eccentric disc (6).

4. A gear machining positioning apparatus according to claim 3, wherein The outside of the rotating rod (13) is fixedly connected with first drive gear (7), the workbench (1) is rotatably connected with second drive gear (8), the first drive gear (7) and the second drive gear (8) are engaged with each other.

5. A gear machining positioning apparatus according to claim 4, wherein The drive assembly is motor fixedly connected in the bottom of the workbench (1), and the output end of the motor is fixedly connected with the second drive gear (8).

6. A gear machining positioning apparatus according to claim 4, wherein The drive assembly is worm wheel (9) fixedly connected outside the second drive gear (8) and worm (10) rotatably connected in the workbench (1), the workbench (1) is rotatably connected with rotating shaft (12), the worm (10) is fixedly connected with the rotating shaft (12), and the worm wheel (9) is engaged with the worm (10).

7. A gear machining positioning apparatus according to claim 6, wherein One end of the rotating shaft (12) extends to the outside of the workbench (1) and is fixedly connected with hand wheel (11).

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