Fixture for positioning and drilling planet carrier

Abstract

The utility model relates to the technical field of planet carriers, in particular to a planet carrier positioning and drilling clamp which comprises a bearing unit provided with three moving units distributed in an array. The moving units are provided with pressing air cylinders correspondingly so that the pressing air cylinders can be driven to move inwards in a close-up mode or move outwards in a diffusion mode with the central axis of the bearing unit as the center. The circular plate is connected with the output end of the pressing air cylinder so as to drive the circular plate to press a planet carrier on a supporting ring installed on the bearing unit; and the positioning shaft is axially arranged on the central axis of the bearing unit, and the positioning shaft and the supporting ring are coaxially distributed. The positioning shaft is matched with the circular plate to limit the planet carrier, so that the planet carrier is positioned, a pin shaft hole is conveniently formed in the planet carrier, and the size precision and the position precision of the pin shaft hole are further guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to planetary carrier technical field especially relates to a planetary carrier positioning drilling fixture. BACKGROUND

[0002] The planetary carrier is an important part in the planetary gear transmission device. In the planetary gear system, the planetary gear rotates around its own axis, and also revolves around the axis of the sun gear with the planetary carrier. The planetary carrier mainly supports the gear, so that the planetary gear can move stably on it. The pin shaft hole of the planetary carrier is a key structural element of the planetary transmission device. The pin shaft is installed in the pin shaft hole to connect the planetary gear and the planetary carrier, so that the planetary gear can rotate around the pin shaft and revolve around the sun gear under the drive of the planetary carrier to realize power transmission. Due to the limitation of the machine tool, the pin shaft hole of the planetary carrier needs to be machined after being clamped twice. If the positional accuracy deviation of the pin shaft hole is too large, the planetary gear will interfere with the planetary carrier when being installed in the window on the side of the planetary carrier, resulting in the scrap of the part. SUMMARY

[0003] The utility model aims at solving the above-mentioned defects, and provides a planetary carrier positioning drilling fixture.

[0004] In order to overcome the defects in the background art, the utility model adopts the technical scheme of a planetary carrier positioning drilling fixture, which comprises a bearing unit, three moving units are arranged on the bearing unit in an array, a pressing cylinder is arranged on each moving unit, and the pressing cylinder is driven to move inward or outward around the central axis of the bearing unit;

[0005] A circular plate is connected with the output end of the pressing cylinder to press the planetary carrier on the support ring installed on the bearing unit;

[0006] A positioning shaft is arranged on the central axis of the bearing unit in an axial direction, and is coaxially arranged with the support ring.

[0007] Further improvement includes that the moving units are located below the bearing unit, the output end of the pressing cylinder is connected with the circular plate through the moving window formed on the bearing unit.

[0008] Further improvement includes that the moving unit comprises a moving seat and a driving motor, the moving seat is slidingly arranged on the guide rail installed on the bearing unit, the output end of the driving motor is connected with a transmission gear, and the transmission gear is engaged with a rack arranged on the bearing unit.

[0009] Further improvement, including the guide post on the circular plate through the mobile window with the positioning hole on the mobile seat opening docking matching.

[0010] Further improvement, including the circular plate opening has a recess.

[0011] The beneficial effects of the present application are: the design is limited by the positioning shaft and the circular plate to the planet carrier, so as to realize the positioning of the planet carrier, facilitate the opening of the shaft hole on the planet carrier, and further ensure the size accuracy and position accuracy of the shaft hole. BRIEF DESCRIPTION OF DRAWINGS

[0012] The present application will be further described below in conjunction with the drawings and examples.

[0013] Figure 1 is the front view of the present application;

[0014] Figure 2 is the rear view of the present application;

[0015] Figure 3 is the structure diagram of the circular plate in the present application;

[0016] In the figure, 1 is a bearing unit, 2 is a support ring, 3 is a circular plate, 4 is a positioning shaft, 5 is a mobile window, 6 is a compression cylinder, 7 is a mobile seat, 8 is a rack, 9 is a guide rail, 10 is a guide column, 11 is a transmission gear, 12 is a drive motor, 13 is a positioning hole, 14 is a recess. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The embodiments in the basic application, all other embodiments obtained by the person skilled in the art without creative labor, belong to the scope of protection of the present application.

[0018] According to Figure 1 As shown in the figure, a planet carrier positioning drilling clamp, including bearing unit 1, on which three mobile units are arranged in an array, the mobile unit is respectively provided with a compression cylinder 6, so as to drive the compression cylinder 6 to move inwardly or outwardly with the center axis of the bearing unit 1 as the center;

[0019] A circular plate 3 is connected with the output end of the pressing cylinder 6 to drive the circular plate 3 to press the planet carrier on the support ring 2 installed on the bearing unit 1, the moving unit drives the circular plate 3 to move to be clamped into the window on the side of the planet carrier for accommodating the gear, thereby positioning the planet carrier, ensuring the position accuracy when machining the pin shaft hole, and the circular plate 3 is driven downward by the pressing cylinder 6 to press the planet carrier.

[0020] A positioning shaft 4 is axially arranged on the central axis of the bearing unit 1 and is used to be inserted into the inner hole of the planet carrier to position the center of the planet carrier, and the positioning shaft 4 is coaxially arranged with the support ring 2.

[0021] In the embodiment, the moving unit is arranged below the bearing unit 1, and the output end of the pressing cylinder 6 is connected with the circular plate 3 through the moving window 5 arranged on the bearing unit 1.

[0022] In the embodiment, as shown in the figure, Figure 2 the moving unit includes a moving seat 7 and a driving motor 12, the moving seat 7 is slidingly arranged on the guide rail 9 installed on the bearing unit 1, the output end of the driving motor 12 is connected with a transmission gear 11 to drive the transmission gear 11 to rotate, and the transmission gear 11 is engaged with a rack 8 arranged on the bearing unit 1 to automatically drive the circular plate 3 to move on the bearing unit 1.

[0023] In the embodiment, the guide column 10 arranged on the circular plate 3 is matched with the positioning hole 13 arranged on the moving seat 7 through the moving window 5, the guide column 10 guides the movement of the circular plate 3 to ensure the stability of the circular plate 3 when pressing the planet carrier and the stability of the lifting.

[0024] In the embodiment, as shown in the figure, Figure 3 a notch 14 is arranged on the circular plate 3, when machining the pin shaft hole of the planet carrier, the cutter is prevented from colliding with the circular plate 3 during machining, and therefore this design is adopted.

[0025] Working principle: first, the center hole of the planet carrier is matched with the positioning shaft 4, and then the planet carrier is placed on the support ring 2, the moving unit drives the circular plate 3 to move towards the center, the circular plate 3 is clamped into the window on the side of the planet carrier for accommodating the gear, at this time the planet carrier is self-adaptively adjusted to be positioned, then the pressing cylinder 6 drives the circular plate 3 to press the planet carrier, and the device is installed on the machine tool to drill the pin shaft hole of the planet carrier.

[0026] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A planetary carrier positioning drill jig characterized by, The application relates to a bearing unit (1) which is provided with three moving units distributed in an array, and a pressing cylinder (6) is arranged on each moving unit so as to drive the pressing cylinder (6) to move inwardly or outwardly with the central axis of the bearing unit (1) as the center; A circular plate (3) is connected with the output end of the pressing cylinder (6) so as to drive the circular plate (3) to press a planet carrier on a supporting ring (2) arranged on the bearing unit (1); A positioning shaft (4) is arranged on the central axis of the bearing unit (1) in an axial direction, and the positioning shaft (4) is coaxially arranged with the supporting ring (2).

2. A planetary carrier positioning drill jig as claimed in claim 1, characterized in that: The moving units are arranged below the bearing unit (1), and the output end of the pressing cylinder (6) is connected with the circular plate (3) through a moving window (5) arranged on the bearing unit (1).

3. A planetary carrier positioning drill jig as claimed in claim 2, wherein: The moving unit comprises a moving seat (7) and a driving motor (12), the moving seat (7) is arranged on a guide rail (9) arranged on the bearing unit (1) in a sliding mode, the output end of the driving motor (12) is connected with a transmission gear (11), and the transmission gear (11) is engaged with a rack (8) arranged on the bearing unit (1).

4. A planetary carrier positioning drill jig as claimed in claim 3, characterized in that: A guide column (10) arranged on the circular plate (3) is matched with a positioning hole (13) arranged on the moving seat (7) through the moving window (5).

5. A planetary carrier positioning drill jig as claimed in claim 1, wherein: A recess (14) is arranged on the circular plate (3).

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