CN211866787U - A pitch chuck for helical gears - Google Patents

Abstract

The utility model discloses a pitch circle chuck for helical gears, which mainly comprises a pitch cylinder, a clamping claw, a cage, an O-ring, a strut, a film disc and a transition disc. The pitch cylinder is designed according to the helical gear helix angle. , the segment cylinder and the jaws are connected together through the dovetail groove, the jaws are respectively installed on the pillars by screws, the three pillars are evenly fixed on the membrane disc in a circle, and the push rod passes through the inner hole of the transition disc and is the same as the transition disc and the membrane disc. The shaft centers are matched together, and the O-ring, the cage and the helical gear are placed concentrically on the plane supported by the three pillars in turn. The device of the utility model can clamp the helical gear, and can replace the pitch cylinders with different inclinations to clamp the helical gears with different helix angles, and the device takes the pitch circle of the helical gear tooth portion as the benchmark, which well guarantees the end face of the helical gear. , shaft hole runout and other precision requirements, has a good promotion and use value.

Description

A pitch chuck for helical gears

technical field

The utility model discloses a pitch chuck, in particular to a pitch chuck for helical gears.

Background technique

Gears are one of the most widely used transmission parts in machines. The more common gears generally include helical gears and spur gears. The advantages of helical gears make them more widely used than spur gears. Therefore, helical gears are often used in actual production, and it is inevitable that they need to be adjusted according to production requirements. The semi-finished helical gear is reworked. At present, gears with large size and shaft holes are usually clamped by the gear end face and the expansion shaft, but it is not suitable for gears without shaft holes; or for gears with high precision requirements such as end face and shaft hole runout , If this method is used, the end face of the gear and the shaft hole will not meet the requirements for use, and it is easy to wear due to beating during use, which will affect the production efficiency.

SUMMARY OF THE INVENTION

In view of the above deficiencies, the device of the present invention provides a pitch circle chuck for helical gears.

The device of the utility model mainly comprises a helical gear, a pitch cylinder, a clamping claw, a cage, an O-ring, a strut, a film disc, a transition disc and a push rod. The push rod passes through the inner hole of the transition disc and is coaxially matched with the transition disc. The membrane disc is fixed on the transition disc by bolts and is coaxial with the transition disc. Three pillars are fixed on the membrane disc, and the three pillars are evenly distributed around the circumference. , the top of each strut is fixed with a claw by screws, and each claw is connected with a segment cylinder through a dovetail groove. superior.

The device of the present utility model includes the following technical solutions:

The device of the utility model takes the pitch circle of the helical gear tooth portion as the benchmark, the three pillars are uniformly fixed on the cage in the circumference, and each pillar is installed with a clamping claw, and the pitch cylinder with the same inclination as the helical angle of the helical gear passes through. The dovetail groove is fixed on the jaws, and the jaws can move in the radial direction of the gear at the top of the strut. The jaws and the pitch cylinder are fixed in a suitable position to clamp helical gears of different diameters, and helical gears for different helix angles can be Replace the pitch cylinder with the corresponding inclination.

Advantages and positive effects of the device of the present invention:

1. The device is based on the pitch circle of the helical gear teeth, which ensures the accuracy of the end face of the helical gear and the runout of the shaft hole.

2. The pitch cylinders with different inclinations can be replaced to clamp the helical gears with different helix angles.

3. Compact structure, stable and reliable.

Description of drawings

The device of the present utility model will be further described below with reference to the accompanying drawings.

Fig. 1 is the schematic diagram of a preferred embodiment of the utility device;

Figure 2 is a top view of a preferred embodiment of the device of the present invention;

Fig. 3 is the schematic diagram of the transition disk, the film disk and the push rod of the utility device;

Figure 4 is a schematic diagram of the jaws and the pitch cylinder of the device of the present invention.

In the drawings, 1, push rod; 2, transition disc; 3, film disc; 4, bolt; 5, O-ring; 6, cage; 7, pillar; 8, jaw; 9, segment cylinder; 10, Helical gear; 11. Screw.

Detailed ways

In Figures 1-4, the device of the present utility model mainly consists of a push rod (1), a transition disc (2), a membrane disc (3), a bolt (4), an O-ring (5), a cage (6), The pillar (7), the clamping jaw (8), the segment cylinder (9), the helical gear (10), and the screw (11) are composed.

In the embodiment shown in Figures 1-4, the push rod (1) passes through the inner hole of the transition disc (2) and is coaxially matched with the transition disc (2), and the membrane disc (3) is fixed by bolts (4). On the transition disc (2) and coaxial with the transition disc (2), three struts (7) are fixed on the membrane disc (3), the three struts (7) are evenly distributed around the circumference, and the top of each strut (7) A clamping claw (8) is installed by a screw (11), and the head of each clamping claw (8) is fixed with a pitch cylinder (9), an O-ring (5), a cage (6) and a helical gear through a dovetail groove (10) Concentrically placed on the plane supported by the inclined surfaces of the three struts (7) in turn, the jaws (8) and the pitch cylinder (9) can move along the radial direction of the helical gear (10) and be fixed in a suitable position The clamping jaws (8) and the pitch cylinder (9) are clamped to clamp the helical gears (10) with different diameters, and the pitch cylinders (9) with the corresponding inclination can be replaced for the helical gears (10) with different helix angles.

Claims (3)

1. A pitch circle chuck for helical gears, mainly comprising helical gears, pitch cylinders, jaws, cages, O-rings, struts, film discs, transition discs and push rods, characterized in that: three The angle of inclination of the pitch cylinder is designed according to the helical gear helix angle, the pitch cylinder is fixed on the jaws, the jaws are mounted on the pillars by screws, and the three pillars are arranged in the shape of a screw. The circumference is evenly fixed on the film disk, the film disk and the transition disk are fixed together concentrically, the transition disk is provided with an inner hole, and the push rod passes through the inner hole of the transition disk and is connected to the inner hole. The transition disc is installed on the same axis, the helical gear, the cage and the O-ring are placed together in turn coaxially, and the O-ring is placed on a plane supported by the three pillars . 2 . The pitch circle chuck for helical gears according to claim 1 , wherein the jaws can move along the radial direction of the helical gears. 3 . 3 . The pitch chuck for helical gears according to claim 1 , wherein the clamping jaws are connected with the pitch cylinder through a dovetail groove. 4 .

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