Phase centering device for crowned tooth key groove machining

Abstract

The invention relates to the field of crowned tooth machining of a large extrusion granulating unit, in particular to a crowned tooth key groove machining phase centering device. The crowned tooth key groove phase centering device has the function of rapidly and accurately achieving crowned tooth key groove machining phase centering, the device is matched with the gradienter through double locking screws, it is guaranteed that the device is completely attached to a workpiece to be machined, the problem of the phase requirement of a key groove and an outer tooth pair in the crowned tooth machining process is solved, and therefore the machining precision is improved.

Description

Technical Field

[0001] This patent application relates to the field of drum-shaped tooth processing for large extrusion granulation units, specifically a phase alignment device for keyway processing of drum-shaped teeth. Background Technology

[0002] Large-scale extrusion granulation units are a key domestic production project in my country's petrochemical industry. Through the joint efforts of multiple organizations, my country has broken the technological monopoly and blockade imposed by Germany and Japan, becoming the third country capable of producing such units, thus comprehensively safeguarding the security of the national petrochemical sector. Improving the machining accuracy and phase machining accuracy of the drum-shaped gears, a core component of the unit's transmission system, is of significant importance.

[0003] When machining the drum-shaped teeth, after the outer teeth are machined, the next step is to machine the keyway. Because the keyway and the teeth have phase requirements, the original machining method can only rely on the scribing operator to roughly scribing the lines and then machining according to the scribing lines. This results in extremely low machining accuracy, causing a phase deviation between the keyway and the outer teeth, which affects the phase accuracy of the transmission. Summary of the Invention

[0004] The purpose of this patent application is to solve the phase requirement problem of keyway and external tooth pair during the machining of drum-shaped teeth, thereby improving machining accuracy.

[0005] According to one aspect of this application, a phase alignment device for machining a drum-shaped keyway is provided, comprising a horizontal plate 1, an arc plate 2, a locking screw 3, a shaft 4, and a level 5;

[0006] The front of the horizontal plate 1 has an arc-shaped notch;

[0007] The arc plate 2 is arc-shaped as a whole, and the curvature is the same as the arc-shaped notch at the front of the horizontal plate 1.

[0008] The horizontal plate 1 and the arc plate 2 are connected by two screws. After the connection, the arc-shaped notch at the front of the horizontal plate 1 and the arc plate 2 form an arc surface.

[0009] The arc plate 2 is provided with two screw holes. During operation, two locking screws 3 pass through the screw holes to fix the entire device onto the gear.

[0010] There are two shafts 4, which are respectively located at the two corners of the rear part of the horizontal plate 1;

[0011] The upper part of the shaft 4 is fixedly connected to the horizontal plate 1, and the lower part can be inserted between the external teeth of the gear to fix the position of the device.

[0012] The level 5 is set on the horizontal plate 1, and there are two of them. The two level 5 are perpendicular to each other to ensure that the horizontal plate 1 is in a horizontal state.

[0013] The advantages of this application are: it has the function of quickly and accurately achieving phase alignment in the machining of keyways for drum-shaped teeth. The device uses double locking screws and a level to ensure complete fit between the device and the workpiece to be machined, thus solving the phase requirement problem of the keyway and external teeth pair during the machining of drum-shaped teeth and improving machining accuracy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the device structure.

[0015] Figure 2 This is a schematic diagram of the device in operation.

[0016] Figure 3 For the structural model diagram of the device

[0017] Figure 4 This is a model diagram of the device's operating state.

[0018] The components include: 1. Horizontal plate; 2. Arc plate; 3. Locking screw; 4. Shaft bar; 5. Level; 6. Drum-shaped teeth to be processed; and 7. Centering device. Detailed Implementation

[0019] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0020] Example 1

[0021] A phase alignment device for machining a drum-shaped keyway includes a horizontal plate 1, an arc plate 2, a locking screw 3, a shaft 4, and a level 5;

[0022] The front of the horizontal plate 1 has an arc-shaped notch;

[0023] The arc plate 2 is arc-shaped as a whole, and the curvature is the same as the arc-shaped notch at the front of the horizontal plate 1.

[0024] The horizontal plate 1 and the arc plate 2 are connected by two screws. After the connection, the arc-shaped notch at the front of the horizontal plate 1 and the arc plate 2 form an arc surface.

[0025] The arc plate 2 is provided with two screw holes. During operation, two locking screws 3 pass through the screw holes to fix the entire device onto the gear.

[0026] There are two shafts 4, which are respectively located at the two corners of the rear part of the horizontal plate 1;

[0027] The upper part of the shaft 4 is fixedly connected to the horizontal plate 1, and the lower part can be inserted between the external teeth of the gear to fix the position of the device.

[0028] The level 5 is set on the horizontal plate 1, and there are two of them. The two level 5 are perpendicular to each other to ensure that the horizontal plate 1 is in a horizontal state.

[0029] The specific work process is as follows:

[0030] 1. First, determine the zero-position tooth based on the already defined centerline position.

[0031] 2. Using the zero-position tooth as a reference, count the tooth positions symmetrically on both sides of the alignment fixture, place the shaft into the tooth groove, and ensure that the upper surface of the fixture is in close contact with the upper surface of the workpiece, and that the arc plate is in close contact with the inner hole of the drum-shaped tooth to be processed.

[0032] 3. By observing the adjustment of the two levels on the horizontal plate, ensure that the two fixing bolts at the back of the fixture are tightened to ensure that the fixture fits snugly against the surface of the workpiece without leaving any gaps.

[0033] 4. After fixing, use a dial indicator to find the roughness of the side of the fixture within 0.1mm.

[0034] 5. Use a dial indicator to level the two shafts fixed in the tooth groove, ensuring that the deviation is within 0.01mm.

[0035] 6. After fixing the workpiece with the pressure plate bolts,

[0036] 7. After verifying that the deviation between the two shafts is within 0.01mm, remove the alignment fixture. The keyway can only be machined after the workpiece center coordinates are determined.

[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any modifications or substitutions made by those skilled in the art within the scope of the technology disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A phase alignment device for machining drum-shaped keyways, characterized in that, Includes a horizontal plate (1), an arc plate (2), a locking screw (3), a shaft (4), and a level (5); The front of the horizontal plate (1) has an arc-shaped notch; The arc plate (2) is arc-shaped as a whole, and the arc is the same as the arc-shaped notch at the front of the horizontal plate (1); The horizontal plate (1) and the arc plate (2) are connected by two screws. After the connection, the arc-shaped notch at the front of the horizontal plate (1) and the arc plate (2) form an arc surface.

2. The phase alignment device for machining drum-shaped keyways according to claim 1, characterized in that, The arc plate (2) has two screw holes on its axis. When working, two locking screws (3) pass through the screw holes to fix the entire device to the gear.

3. The phase alignment device for machining drum-shaped keyways according to claim 1, characterized in that, There are two shafts (4), which are respectively located at the two corners of the rear part of the horizontal plate (1); The upper part of the shaft (4) is interference-fitted with the horizontal plate (1), and the lower part can be inserted between the outer teeth of the gear to fix the position of the device.

4. The phase alignment device for machining drum-shaped keyways according to claim 1, characterized in that, The level (5) is set on the horizontal plate (1), and there are two of them. The two level (5) are perpendicular to each other to ensure that the horizontal plate (1) is in a horizontal state.

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