Positioning mechanism for gear machining

Abstract

The utility model discloses a gear machining positioning mechanism, and relates to the technical field of gear machining, the gear machining positioning mechanism comprises a rack for placing a gear blank, the rack is provided with an ejector block in a sliding mode in the radial direction of the gear blank at the inner ring of the gear blank, the ejector block abuts against the inner ring of the gear blank, and the top of the ejector block is provided with a pressing plate abutting against the upper surface of the gear blank; a plurality of ejecting blocks and pressing plates are arranged in the circumferential direction of the gear blank, and the rack is provided with a first driving piece for driving the ejecting blocks to be close to the inner ring of the gear blank. The first driving piece drives the ejecting blocks to be close to the inner ring of the gear blank and abut against the side wall of the gear blank, the gear blank is positioned through the ejecting blocks, then the gear blank is milled through the pressing plates on the ejecting blocks, then gear milling equipment conducts gear milling on outer ring teeth of the gear blank, the positioning efficiency of the gear blank is improved, and operation is easy.

Description

Technical Field

[0001] This application relates to the field of gear processing technology, and in particular to a gear processing positioning mechanism. Background Technology

[0002] A gear is a mechanical component with teeth on its rim that continuously meshes to transmit motion and power. Gears have been used in power transmission for a long time. With the development of production, the smoothness of gear operation has become increasingly important.

[0003] However, existing gear machining positioning devices typically fix the gear by mating it with a positioning shaft, and then machine the outer ring teeth of the gear.

[0004] Regarding the aforementioned technologies, the inventors believe that when machining gears with similar diameters but different diameters, it is necessary to replace the positioning shaft with a different diameter to match the gear when positioning the gear, and then fix the gear to start machining the outer ring teeth, which is a rather cumbersome operation. Utility Model Content

[0005] The purpose of this application is to provide a gear machining positioning mechanism to improve the cumbersome operation of positioning gears with similar diameters but different diameters, which requires changing positioning shafts of different diameters to match the gears according to the actual situation before fixing the gears to start machining the outer ring teeth.

[0006] This application provides a gear machining positioning mechanism, which adopts the following technical solution:

[0007] A gear processing positioning mechanism includes a frame for placing a gear blank. A top block is slidably disposed on the frame along the radial direction of the gear blank, located on the inner ring of the gear blank. The top block abuts against the inner ring of the gear blank. A pressure plate is disposed on the top of the top block, abutting against the upper surface of the gear blank. A plurality of top blocks and pressure plates are disposed along the circumference of the gear blank. The frame is provided with a driving component for driving the top block closer to the inner ring of the gear blank.

[0008] By adopting the above technical solution, the driving component drives the top block to approach the inner ring of the gear blank and abut against the side wall of the gear blank, so that several top blocks position the gear blank. Then, the pressure plate on the top block fixes the gear blank. Subsequently, the gear milling equipment mills the outer ring teeth of the gear blank, which improves the positioning efficiency of the gear blank and simplifies the operation.

[0009] Optionally, the frame is rotatably mounted on the bottom of the gear blank, and the frame is provided with a second driving component that drives the mounting frame to rotate the gear blank. The top block is slidably connected to the mounting frame along the radial direction of the gear blank. The mounting frame is provided with a fixing groove corresponding to the first driving component along the axial direction of the gear blank. The driving end of the first driving component is provided with a mounting block, and a support rod is rotatably mounted on the side wall of the mounting block. The end of the support rod away from the mounting block is rotatably connected to the top block.

[0010] By adopting the above technical solution, the driving component drives the mounting block to rise, causing the support rod on the side wall of the mounting block to rotate and simultaneously push the top block against the inner ring side wall of the gear blank, so that the top block and the gear blank come into contact at the same time, which facilitates the positioning of the gear blank.

[0011] Optionally, the top block is provided with a detachable arc-shaped plate on the side near the inner ring of the gear blank, and the arc-shaped plate is in contact with the inner ring of the gear blank.

[0012] By adopting the above technical solution, the arc plate fits snugly against the inner ring of the gear blank, reducing the possibility of the gear blank moving on the mounting bracket. By replacing the arc plate, gear blanks with different inner ring sizes can be fixed.

[0013] Optionally, a pad is provided on the side of the mounting bracket near the gear blank, and several pads are spaced apart around the circumference of the mounting bracket, with the top of the pads being toothed.

[0014] By adopting the above technical solution, the toothed pads contact the gear blank, increasing the friction between them and the gear blank, further reducing the possibility of the gear blank rotating independently on the mounting frame, and reducing the impact on the machining of the outer ring teeth of the gear blank.

[0015] Optionally, the mounting bracket is provided with an electromagnet at the interval between the pads, and the frame is provided with a switch to control the electromagnet.

[0016] By adopting the above technical solution, the gear blank is magnetically fixed by the energized electromagnet, which further reduces the possibility of the gear blank moving; the electromagnet is energized or de-energized by the switch, which facilitates the replacement of the gear blank on the mounting bracket.

[0017] Optionally, the top of the pad is provided with a rubber pad that conforms to the tooth profile.

[0018] By adopting the above technical solution, when the gear blank is placed on the mounting frame and the electromagnet magnetically attracts the gear blank, the rubber pad is in close contact with the bottom of the gear blank, further increasing the friction between the pad and the gear blank, and minimizing the possibility of the gear blank rotating on its own on the mounting frame.

[0019] Optionally, the top block is provided with a screw that penetrates the pressure plate, and the top of the screw is threaded with a wing nut that abuts against the pressure plate.

[0020] By adopting the above technical solution, the pressure plate is pressed against the gear blank by tightening the wing nut, thus fixing the gear blank. At the same time, the gear blanks of different thicknesses can be fixed by adjusting the different heights of the wing nut.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The drive unit drives the push block to approach the inner ring of the gear blank and abut against the side wall of the gear blank, so that several push blocks position the gear blank. Then, the pressure plate on the push block fixes the gear blank. Subsequently, the gear milling equipment mills the outer ring teeth of the gear blank, which improves the positioning efficiency of the gear blank and is simple to operate.

[0023] 2. The toothed pads contact the gear blank, increasing the friction between them and further reducing the possibility of the gear blank rotating independently on the mounting bracket, thus reducing the impact on the machining of the outer ring teeth of the gear blank.

[0024] 3. The gear blank is magnetically fixed by the energized electromagnet, further reducing the possibility of the gear blank moving; the electromagnet is energized or de-energized by a switch, which facilitates the replacement of the gear blank on the mounting bracket. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a gear machining positioning mechanism.

[0026] Figure 2 This is a partial sectional view of a gear machining split-type combined machining positioning mechanism.

[0027] In the diagram, 1. Gear blank; 2. Frame; 21. Mounting bracket; 211. Fixing groove; 22. Drive component two; 23. Pad block; 231. Rubber pad; 24. Electromagnet; 25. Switch; 3. Top block; 31. Arc plate; 32. Screw; 33. Wing nut; 4. Pressure plate; 5. Drive component one; 51. Mounting block; 52. Support rod. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 -Appendix Figure 2 This application will be described in further detail below.

[0029] A gear machining positioning mechanism, as shown in the reference Figure 1The system includes a frame 2 for placing a gear blank 1. A metal top block 3 is slidably mounted on the frame 2 along the radial direction of the gear blank 1, located within the inner ring of the gear blank 1. The top block 3 abuts against the inner ring of the gear blank 1. A metal pressure plate 4 is mounted on the top of the top block 3, abutting against the upper surface of the gear blank 1. Several top blocks 3 and pressure plates 4 are arranged along the circumference of the gear blank 1. A driving component 5 is mounted on the frame 2 to drive the top blocks 3 closer to the inner ring of the gear blank 1. A through-pressure plate is welded above the top blocks 3. The screw 32 on the plate 4 has a wing nut 33 threaded to the top of the screw 32 that abuts against the pressure plate 4. By tightening the wing nut 33, the pressure plate 4 abuts against the gear blank 1. The drive component 5 drives the top block 3 to approach the inner ring of the gear blank 1 and abut against the side wall of the gear blank 1, so that several top blocks 3 position the gear blank 1. Then, the pressure plate 4 on the top block 3 fixes the gear blank 1. Subsequently, the gear milling equipment performs gear milling on the outer ring teeth of the gear blank 1.

[0030] Reference Figure 1 and Figure 2 A metal mounting bracket 21 is rotatably connected to the bottom of the gear blank 1 via a shaft and bearings on the frame 2. The mounting bracket 21 is disc-shaped. A second drive component 22, which drives the mounting bracket 21 to rotate the gear blank 1, is mounted on the bottom of the frame 2. The second drive component 22 is a drive motor electrically connected to the power supply, which drives the mounting bracket 21 to rotate. A sliding groove corresponding to the top block 3 is opened on the upper surface of the mounting bracket 21. The top block 3 is slidably connected to the mounting bracket 21 along the radial direction of the gear blank 1 via the sliding groove. A fixing groove 211 corresponding to the first drive component 5 is opened on the mounting bracket 21 along the axial direction of the gear blank 1. The first drive component 5 is fixed in the fixing groove 211 with bolts. The first drive component 5 is a drive cylinder electrically connected to the power supply. A metal mounting block 51 is fixed to the drive end of the first drive component 5 with bolts. A metal support rod 52 is rotatably connected to the side wall of the mounting block 51 via a rotating shaft. The end of the support rod 52 away from the mounting block 51 is rotatably connected to the top block 3 via a rotating shaft. The mounting block 51 is driven to rise by the drive component 5, causing the support rod 52 on the side wall of the mounting block 51 to rotate and simultaneously push the top block 3 against the inner ring side wall of the gear blank 1, so that the top block 3 and the gear blank 1 come into contact at the same time, which facilitates the positioning of the gear blank 1. A detachable metal arc plate 31 is inserted into the side of the top block 3 near the inner ring of the gear blank 1 via a fixing pin. The arc plate 31 fits against the inner ring of the gear blank 1. The radius of the arc plate 31 is smaller than the radius of the smallest gear inner diameter that can be processed, reducing the possibility of the gear blank 1 moving on the mounting frame 21. The gear blank 1 with different inner ring sizes can be fixed by replacing the arc plate 31.

[0031] Reference Figure 2A pad 23 is provided on the side of the mounting bracket 21 near the gear blank 1. Several pads 23 are spaced apart around the circumference of the mounting bracket 21. The top of each pad 23 is toothed. The toothed surface of the pads 23 contacts the gear blank 1, increasing the friction between them and further reducing the possibility of the gear blank 1 rotating independently on the mounting bracket 21, thus minimizing the impact on the machining of the outer ring teeth of the gear blank 1. An electromagnet 24 is positioned at intervals between the pads 23 on the mounting bracket 21. The electromagnet 24 is electrically connected to a power source, and when energized, it magnetically holds the gear blank 1 in place, further reducing the possibility of movement of the gear blank 1. Yes, a switch 25 is installed on the frame 2 to control the electromagnet 24. The electromagnet 24 is electrically connected to the signal receiver (not shown in the figure) on the mounting frame 21 through a wire. The signal generated by the switch 25 controls the electromagnet 24 to be energized or de-energized through the signal receiver, which facilitates the replacement of the gear blank 1 on the mounting frame 21. A rubber pad 231 that conforms to the tooth profile is bonded to the top of the pad 23. When the gear blank 1 is placed on the mounting frame 21 and the electromagnet 24 magnetically attracts the gear blank 1, the rubber pad 231 is tightly attached to the bottom of the gear blank 1, which further increases the friction between the gear blank 1 and the gear blank 1, and minimizes the possibility of the gear blank 1 rotating on the mounting frame 21 on its own.

[0032] The implementation principle of this application embodiment is as follows:

[0033] In actual operation, after the gear blank 1 is placed on the mounting bracket 21, the driving component 5 drives the mounting block 51 to rise, causing the support rod 52 on the side wall of the mounting block 51 to rotate and push the top block 3 against the inner ring side wall of the gear blank 1, so that the top block 3 and the gear blank 1 abut at the same time, thus positioning the gear blank 1; turn on the switch 25 to energize the electromagnet 24 to magnetically fix the gear blank 1, further reducing the possibility of the gear blank 1 moving; tighten the wing nut 33 to make the pressure plate 4 abut against the gear blank 1, thus fixing the gear blank 1. Then, the gear milling equipment performs gear milling on the outer ring teeth of the gear blank 1, improving the positioning efficiency of the gear blank 1. The operation is simple.

[0034] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A gear machining positioning mechanism, characterized by: The rack (2) is arranged in the gear blank (1), the top block (3) is arranged on the inner circle of the gear blank (1) and slides along the radial direction of the gear blank (1), the top block (3) abuts against the inner circle of the gear blank (1), the pressing plate (4) is arranged on the top of the top block (3) and abuts against the upper surface of the gear blank (1), a plurality of top blocks (3) and pressing plates (4) are arranged along the circumferential direction of the gear blank (1), and the rack (2) is provided with the driving part one (5) for driving the top block (3) to move close to the inner circle of the gear blank (1).

2. A gear machining positioning mechanism according to claim 1, wherein: The rack (2) is arranged in the gear blank (1), the top block (3) is arranged on the inner circle of the gear blank (1) and slides along the radial direction of the gear blank (1), the top block (3) abuts against the inner circle of the gear blank (1), the pressing plate (4) is arranged on the top of the top block (3) and abuts against the upper surface of the gear blank (1), a plurality of top blocks (3) and pressing plates (4) are arranged along the circumferential direction of the gear blank (1), and the rack (2) is provided with the driving part one (5) for driving the top block (3) to move close to the inner circle of the gear blank (1).

3. A gear machining positioning mechanism according to claim 2, wherein: The top block (3) is provided with the detachable arc-shaped plate (31) arranged on the side close to the inner circle of the gear blank (1), and the arc-shaped plate (31) is attached to the inner circle of the gear blank (1).

4. A gear machining positioning mechanism according to claim 3, wherein: The mounting rack (21) is provided with the cushion block (23) arranged on the side close to the gear blank (1), a plurality of cushion blocks (23) are arranged at intervals along the circumferential direction of the mounting rack (21), and the top of the cushion block (23) is provided with the tooth profile.

5. A gear machining positioning mechanism according to claim 4, wherein: The mounting rack (21) is provided with the electromagnet (24) arranged at intervals between the cushion blocks (23), and the rack (2) is provided with the switch (25) for controlling the electromagnet (24).

6. A gear machining positioning mechanism according to claim 5, wherein: The top of the cushion block (23) is provided with the rubber pad (231) attached to the tooth profile.

7. A gear machining positioning mechanism according to claim 1, wherein: The top block (3) is provided with the screw rod (32) penetrating through the pressing plate (4), and the screw rod (32) is provided with the butterfly nut (33) abutting against the pressing plate (4) on the top.

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