Positioning device of numerical control gear hobbing machine for gear machining

Abstract

The utility model discloses a positioning device of a numerical control gear hobbing machine for gear machining, which comprises a pressing mechanism and a feeding mechanism, and the pressing mechanism comprises a motor, a missing gear connected with an output shaft of the motor, and an L-shaped toothed plate meshed with the front side of the missing gear. In the utility model, the motor drives the missing gear and the positioning pin to rotate, every time the positioning pin rotates a circle, the baffle plate influenced by the transmission rod and the push-pull rod is communicated with the guide slope I and the guide slope II once, and then the rolling gear falling from the material frame slides to the position of the pressing plate along the guide slope I and the guide slope II; the missing gear is meshed with the L-shaped toothed plate, then the L-shaped toothed plate and the pressing plate move outwards, then the tension spring is lengthened, and when the L-shaped toothed plate and the pressing plate are separated from the meshing state, the tension spring shrinks, so that the pressing plate is matched with the first guide slope to press the rolling gear, the two steps of feeding and positioning clamping are matched tightly and are smooth, and the machining efficiency of the rolling gear is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning devices, in particular to a positioning device for a numerically controlled hobbing machine for gear processing. Background Technique

[0002] A hobbing machine is one of the most widely used machine tools in gear processing machine tools. Straight teeth, helical cylindrical gears can be cut on the hobbing machine, and worm wheels, sprocket wheels, etc. can also be processed. A gear processing machine tool that uses a hob to process straight teeth, helical teeth and herringbone teeth cylindrical gears and worm wheels by the generating method. When using a special hob, this machine tool can also process various special tooth-shaped workpieces such as splines and sprocket wheels.

[0003] The currently used positioning device usually first feeds the material manually or by machine, and then performs positioning and clamping to prevent the workpiece from shifting during processing. The cooperation of these two steps is not smooth enough, resulting in an interval between the steps and affecting the processing efficiency. Content of the Utility Model

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] For this reason, the technical solution adopted by the utility model is as follows:

[0006] A positioning device for a numerically controlled hobbing machine for gear processing, including a pressing mechanism and a feeding mechanism. The pressing mechanism includes a motor, a toothed gear with a notch connected to the output shaft of the motor, an L-shaped toothed plate meshing with the front side of the toothed gear with a notch, a pressing plate connected to the L-shaped toothed plate, a first guiding slope arranged on one side of the pressing plate, and a tension spring connected between the L-shaped toothed plate and the first guiding slope. The feeding mechanism includes a positioning pin connected to the top of the toothed gear with a notch, a transmission rod movably sleeved outside the positioning pin, a push-pull rod movably connected to the transmission rod, a baffle plate connected to the rear side of the push-pull rod, a second guiding slope attached to the rear side of the baffle plate, and an outlet is opened at the top of the baffle plate.

[0007] By adopting the above technical solution, the motor drives the toothed gear with a notch and the positioning pin to rotate. Every time the positioning pin rotates one week, the baffle plate affected by the transmission rod and the push-pull rod will connect the first guiding slope and the second guiding slope once. Then the hob gear falling from the material frame slides along the first guiding slope and the second guiding slope to the position of the pressing plate. During the sliding process of the hob gear, the toothed gear with a notch meshes with the L-shaped toothed plate, then the L-shaped toothed plate and the pressing plate move outward, then the tension spring is stretched, and when they are disengaged from the meshing state, the tension spring contracts, so that the pressing plate cooperates with the first guiding slope to press the hob gear tightly. The two steps of feeding and positioning and clamping are closely and smoothly coordinated, improving the processing efficiency of the hob gear.

[0008] In a preferred embodiment, the present utility model can be further configured as follows: the center of the defective gear is vertically coaxial with the output shaft of the motor, and the motor is electrically connected to an external power supply.

[0009] In a preferred embodiment, the present utility model can be further configured as follows: the transmission rod is attached to the top of the defective gear, the push-pull rod is attached to the top of the transmission rod, and the transmission rod and the push-pull rod are made of the same metal material.

[0010] In a preferred embodiment, the present utility model can be further configured as follows: a bottom plate is sleeved outside the motor body, the bottom of the defective gear is attached to the top of the bottom plate, and the bottoms of the first guiding slope and the second guiding slope are both fixedly connected to the top of the bottom plate.

[0011] In a preferred embodiment, the present utility model can be further configured as follows: a first guiding component is provided on the top of the bottom plate. The first guiding component includes a first guide rail connected to the top of the bottom plate and a first slider slidably embedded in the top of the first guide rail. The top of the first slider is fixedly connected to the bottom of a pressing plate, and the pressing plate hangs over the top of the first slider.

[0012] In a preferred embodiment, the present utility model can be further configured as follows: a second guiding component is provided on the top of the bottom plate. The second guiding component includes a second guide rail connected to the top of the bottom plate and a second slider slidably embedded in the top of the second guide rail. The top of the second slider is fixedly connected to the bottom of a baffle, and the baffle hangs over the top of the second guide rail.

[0013] In a preferred embodiment, the present utility model can be further configured as follows: a material box is sleeved on the top of the second guiding slope.

[0014] By adopting the above technical solutions, the beneficial effects obtained by the present utility model are as follows:

[0015] 1. In the present utility model, the motor drives the defective gear and the positioning pin to rotate. Every time the positioning pin rotates one week, the baffle affected by the transmission rod and the push-pull rod will connect the first guiding slope and the second guiding slope once. Then, the rolling gears falling from the material box slide along the first guiding slope and the second guiding slope to the position of the pressing plate. During the sliding process of the rolling gears, the defective gear meshes with the L-shaped tooth plate. Then, the L-shaped tooth plate and the pressing plate move outward, and then the tension spring is stretched. When they are disengaged from the meshing state, the tension spring contracts, causing the pressing plate to cooperate with the first guiding slope to press the rolling gears tightly. The two steps of feeding and positioning and clamping are closely coordinated and smooth, improving the processing efficiency of the rolling gears.

[0016] 2. In the present utility model, first, multiple components in the device are fixed by the bottom plate. Then, through the first guiding component and the second guiding component, the pressing plate and the baffle can move stably, improving the structural stability of the device, making the feeding operation and the positioning and clamping operation not prone to errors, and to a certain extent, ensuring the processing efficiency of the rolling gears. Description of the Drawings

[0017] Figure 1 This is a three - dimensional view of the overall structure of the present utility model;

[0018] Figure 2 This is a bottom view of the pressing mechanism of the present utility model;

[0019] Figure 3 This is a top view of the pressing mechanism of the present utility model;

[0020] Figure 4 This is a schematic diagram of the feeding mechanism of the present utility model;

[0021] Figure 5 This is a schematic diagram of the connection relationship among the first guiding component, the second guiding component and the bottom plate of the present utility model.

[0022] Reference numerals:

[0023] 100, pressing mechanism; 110, motor; 120, toothed gear with notch; 130, L - shaped toothed plate; 140, pressing plate; 150, first guiding slope; 160, tension spring;

[0024] 200, feeding mechanism; 210, positioning pin; 220, transmission rod; 230, push - pull rod; 240, baffle; 250, second guiding slope;

[0025] 300, bottom plate;

[0026] 400, first guiding component; 410, first guide rail; 420, first slider;

[0027] 500, second guiding component; 510, second guide rail; 520, second slider;

[0028] 600, material box. Detailed implementation manners

[0029] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in combination with the specific implementation manners and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0030] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present utility model.

[0031] The following describes a positioning device for a numerically controlled hobbing machine for gear processing provided by some embodiments of the present utility model with reference to the accompanying drawings.

[0032] Embodiment 1:

[0033] Combined with Figures 1-5As shown in the figure, a positioning device for a numerically controlled hobbing machine for gear processing provided by the utility model includes a pressing mechanism 100 and a feeding mechanism 200. The pressing mechanism 100 includes a motor 110, a toothed gear with a notch 120 connected to the output shaft of the motor 110, an L-shaped toothed plate 130 meshing with the front side of the toothed gear with a notch 120, a pressing plate 140 connected to the L-shaped toothed plate 130, a first guiding slope 150 arranged on one side of the pressing plate 140, and a tension spring 160 connected between the L-shaped toothed plate 130 and the first guiding slope 150;

[0034] The feeding mechanism 200 includes a positioning pin 210 connected to the top of the toothed gear with a notch 120, a transmission rod 220 movably sleeved outside the positioning pin 210, a push-pull rod 230 movably connected to the transmission rod 220, a baffle 240 connected to the rear side of the push-pull rod 230, and a second guiding slope 250 attached to the rear side of the baffle 240. An outlet is provided at the top of the baffle 240.

[0035] Furthermore, the center of the toothed gear with a notch 120 is vertically coaxial with the output shaft of the motor 110, and the motor 110 is electrically connected to an external power supply. With this structural design, the toothed gear with a notch 120 can rotate smoothly in place, ensuring that it can always affect the L-shaped toothed plate 130.

[0036] Furthermore, the transmission rod 220 is attached to the top of the toothed gear with a notch 120, the push-pull rod 230 is attached to the top of the transmission rod 220, and the transmission rod 220 and the push-pull rod 230 are made of the same metal material. Using the same metal material reduces the difficulty of material selection when manufacturing the transmission rod 220 and the push-pull rod 230.

[0037] Furthermore, a bottom plate 300 is sleeved outside the body of the motor 110. The bottom of the toothed gear with a notch 120 is attached to the top of the bottom plate 300. The bottoms of the first guiding slope 150 and the second guiding slope 250 are fixedly connected to the top of the bottom plate 300. The setting of the bottom plate 300 can improve the structural stability of the device.

[0038] Furthermore, a material box 600 is sleeved on the top of the second guiding slope 250. The setting of the material box 600 enables the feeding operation to continue.

[0039] Embodiment 2:

[0040] Combined with Figure 1 and Figure 5As shown, on the basis of the first embodiment, a first guiding assembly 400 is provided on the top of the bottom plate 300. The first guiding assembly 400 includes a first guide rail 410 connected to the top of the bottom plate 300, and a first slider 420 slidably embedded in the top of the first guide rail 410. The top of the first slider 420 is fixedly connected to the bottom of the pressing plate 140. The pressing plate 140 is suspended above the top of the first slider 420. The first guide rail 410 and the first slider 420 cooperate to guide the pressing plate 140, so that the rolling gears falling between the pressing plate 140 and the first guiding slope 150 can be pressed tightly.

[0041] Embodiment Three:

[0042] Combined with Figure 1 、 4 and Figure 5 As shown, in the above embodiment, a second guiding assembly 500 is provided on the top of the bottom plate 300. The second guiding assembly 500 includes a second guide rail 510 connected to the top of the bottom plate 300, and a second slider 520 slidably embedded in the top of the second guide rail 510. The top of the second slider 520 is fixedly connected to the bottom of the baffle 240. The baffle 240 is suspended above the second guide rail 510. The second guide rail 510 and the second slider 520 cooperate to enable the baffle 240 to move smoothly, ensuring the opening time of the second guiding slope 250.

[0043] The working principle and usage process of the present utility model: When this device is put into actual use, the power supply is connected, and then the motor 110 drives the toothed gear 120 to rotate. Then the positioning pin 210 moves accordingly. Every time the positioning pin 210 rotates one week, the baffle 240 affected by the transmission rod 220 and the push-pull rod 230 will connect the first guiding slope 150 and the second guiding slope 250 once. Then the rolling gears falling from the material box 600 slide along the first guiding slope 150 and the second guiding slope 250 to the position of the pressing plate 140, providing conditions for positioning the rolling gears. Here, when the toothed gear 120 meshes with the L-shaped toothed plate 130, it will push the L-shaped toothed plate 130 and the pressing plate 140 to move outward. Then the tension spring 160 is stretched. When they are disengaged from the meshing state, the tension spring 160 contracts, causing the pressing plate 140 to cooperate with the first guiding slope 150 to tightly press the rolling gears. The two steps of feeding and positioning and clamping are closely and smoothly coordinated, improving the processing efficiency of the rolling gears.

[0044] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A positioning device for a CNC gear hobbing machine for gear processing, characterized in that: include: A clamping mechanism (100), the clamping mechanism (100) comprising a motor (110), a missing gear (120) connected to an output shaft of the motor (110), an L-shaped toothed plate (130) meshed with a front side of the missing gear (120), a pressing plate (140) connected to the L-shaped toothed plate (130), a guide slope (150) provided on one side of the pressing plate (140), and a tension spring (160) connected between the L-shaped toothed plate (130) and the guide slope (150); A feeding mechanism (200), the feeding mechanism (200) comprising a positioning pin (210) connected to the top of the defective gear (120), a transmission rod (220) movably sleeved on the outside of the positioning pin (210), a push-pull rod (230) movably connected to the transmission rod (220), a baffle (240) connected to the rear side of the push-pull rod (230), and a second guide ramp (250) attached to the rear side of the baffle (240); an outlet is provided at the top of the baffle (240).

2. A positioning device for a CNC gear hobbing machine for gear processing according to claim 1, characterized in that: The wheel center of the missing gear (120) is vertically coaxial with the output shaft of the motor (110), and the motor (110) is electrically connected to an external power source.

3. The positioning device of a CNC gear hobbing machine for gear processing according to claim 1, characterized in that: The transmission rod (220) is attached to the top of the defective gear (120), and the push-pull rod (230) is attached to the top of the transmission rod (220). The transmission rod (220) and the push-pull rod (230) are made of the same metal material.

4. The positioning device of a CNC gear hobbing machine for gear processing according to claim 1, characterized in that: A bottom plate (300) is sleeved on the outer side of the motor (110) body, the bottom of the missing gear (120) is in contact with the top of the bottom plate (300), and the bottom of the first guide ramp (150) and the bottom of the second guide ramp (250) are both fixedly connected to the top of the bottom plate (300).

5. The positioning device of a CNC gear hobbing machine for gear processing according to claim 4, characterized in that: A guide assembly (400) is provided at the top of the base plate (300), and the guide assembly (400) includes a guide rail (410) connected to the top of the base plate (300), and a slider (420) slidably embedded in the top of the guide rail (410), the top of the slider (420) is fixedly connected to the bottom of the pressure plate (140), and the pressure plate (140) is suspended on the top of the slider (420).

6. The positioning device of a CNC gear hobbing machine for gear processing according to claim 4, characterized in that: A second guide assembly (500) is provided at the top of the base plate (300), and the second guide assembly (500) includes a second guide rail (510) connected to the top of the base plate (300), and a second slider (520) slidably embedded in the top of the second guide rail (510), the top of the second slider (520) is fixedly connected to the bottom of the baffle (240), and the baffle (240) is suspended on the top of the second guide rail (510).

7. The positioning device of a CNC gear hobbing machine for gear processing according to claim 1, characterized in that: The top of the second guide slope (250) is sleeved with a material frame (600).

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