A tooling fixture for a fan hub

Abstract

This patent discloses a tooling fixture for a fan hub, including a base, a square hub on the top of the base, a square hole on the bottom of the square hub, a square groove on the top of the square hub, a first L-plate fixedly installed on the left side of the top front end of the base, an inclined rectangular hole on the top of the base, a second L-plate slidably installed on the top of the base, and a stud fixedly installed on the bottom of the second L-plate. This patent is provided with a fixed first L-plate and a movable second L-plate on the base, an inclined rectangular hole on the base, a stud installed on the bottom of the second L-plate, the bottom end of the stud passes through the rectangular hole and is connected to a nut, the first L-plate and the second L-plate can be clamped on two diagonal corners of the square fan hub, and the nut can be locked. By adjusting the locking position of the second L-plate, square hubs of different sizes can be clamped, which can meet the clamping requirements of hubs of different sizes and has a wide range of applications.

Description

Technical Field

[0001] This patent relates to the field of fixture technology, specifically a tooling fixture for a fan hub. Background Art

[0002] When drilling a hole in the cooling fan hub on the engine, the hub needs to be clamped and positioned by a tooling fixture. The existing fixture positions the hub by inserting a square plate into the middle square hole of the hub, but the size of the square plate is fixed, so it can only clamp fan hubs of a single size, and cannot meet the clamping requirements of hubs of different sizes. The scope of application is small. Therefore, we propose a tooling fixture for the fan hub. Utility Model Content

[0003] The purpose of this patent is to provide a fan hub fixture to solve the problems raised in the above background technology.

[0004] To achieve the above purpose, the patent provides the following technical solutions: a fan hub fixture, comprising a base, a square hub is provided on the top of the base, a square hole is provided on the bottom of the square hub, a square groove is provided on the top of the square hub, a first L-plate is fixedly installed on the left side of the top front end of the base, an inclined rectangular hole is provided on the top of the base, a second L-plate is slidably installed on the top of the base, a stud is fixedly installed on the bottom of the second L-plate, the bottom end of the stud passes through the rectangular hole and is screwed with a nut, the top of the nut is tightly fitted on the bottom of the base, and the first L-plate and the second L-plate are respectively clamped on two diagonal corners of the square hub;

[0005] The nut includes an internal thread ring and a pressure ring. The internal thread ring is threaded on the side wall of the stud. The pressure ring is sleeved on the stud. The top of the internal thread ring fits tightly against the bottom of the pressure ring. The top of the pressure ring fits tightly against the bottom of the base. The bottom of the base is provided with continuously distributed tooth grooves. The tooth grooves are divided into two rows. The two rows of tooth grooves are respectively located on both sides of the rectangular hole. The front and rear sides of the top of the pressure ring are integrally formed with insert teeth, and the insert teeth are inserted into the tooth grooves.

[0006] Preferably, supporting feet can be installed at the four corners of the bottom of the base.

[0007] Preferably, a limiting plate is integrally formed on the left side of the top of the pressure ring, and the front and rear sides of the limiting plate respectively fit and slide relative to the inner front and rear side walls of the rectangular hole, and the height of the limiting plate is greater than the height of the inserting tooth.

[0008] Preferably, the outer wall of the internal threaded ring is provided with an annular groove, a circular ring is rotatably installed in the annular groove, the shape and size of the circular ring match the internal shape and size of the annular groove, and a connecting ring is integrally formed on the outer wall of the circular ring, and the upper side of the inner wall of the connecting ring is fixedly installed on the outer wall of the pressure ring.

[0009] Preferably, the inner diameter of the pressure ring is larger than the diameter of the stud, and the inner side wall of the pressure ring does not contact the side wall of the stud.

[0010] Preferably, a rubber layer is embedded on the top of the pressure ring, and the top of the rubber layer fits tightly to the bottom of the base.

[0011] Compared with the prior art, the beneficial effects of this patent are as follows: this patent provides a fixed first L-plate and a movable second L-plate on the base, and an inclined rectangular hole is provided on the base. A stud is installed at the bottom of the second L-plate, and the bottom end of the stud passes through the rectangular hole and is connected with a nut. The first L-plate and the second L-plate can be clamped on two opposite corners of the square fan hub, and the locking nut can be used. By adjusting the locking position of the second L-plate, square hubs of different sizes can be clamped, which can meet the clamping requirements of hubs of different sizes and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the overall three-dimensional diagram of this patent.

[0013] Figure 2 This is the overall cross-sectional view of this patent.

[0014] Figure 3 This is a schematic diagram of the partial structure of this patent.

[0015] Figure 4 This is a schematic diagram of the nut of this patent.

[0016] In the figure: 1, base, 2, first L plate, 3, second L plate, 4, rectangular hole, 5, stud, 6, nut, 7, square hub, 8, square hole, 9, square groove, 10, internal thread ring, 11, pressure ring, 12, insert gear, 13, limit plate, 14, annular groove, 15, circular ring, 16, connecting ring, 17, rubber layer. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of this patent to clearly and completely describe the technical solutions in the embodiments of this patent. Obviously, the described embodiments are only part of the embodiments of this patent, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0018] See also Figure 1, Figure 2 , Figure 3 and Figure 4 This patent provides a technical solution: a fan hub fixture, including a base 1, a square hub 7 is provided on the top of the base 1, a square hole 8 is provided on the bottom of the square hub 7, a square groove 9 is provided on the top of the square hub 7, a first L-plate 2 is fixedly installed on the left side of the top front end of the base 1, an inclined rectangular hole 4 is provided on the top of the base 1, a second L-plate 3 is slidably installed on the top of the base 1, a stud 5 is fixedly installed on the bottom of the second L-plate 3, the bottom end of the stud 5 passes through the rectangular hole 4 and is screwed with a nut 6, the top of the nut 6 is tightly fitted on the bottom of the base 1, and the first L-plate 2 and the second L-plate 3 are respectively clamped on the two diagonal corners of the square hub 7;

[0019] The fixture of this device can only clamp square engine fan hubs.

[0020] The nut 6 includes an internal thread ring 10 and a pressure ring 11. The internal thread ring 10 is screwed on the side wall of the stud 5, and the pressure ring 11 is sleeved on the stud 5. The top of the internal thread ring 10 fits tightly against the bottom of the pressure ring 11, and the top of the pressure ring 11 fits tightly against the bottom of the base 1. The bottom of the base 1 is provided with continuously distributed tooth grooves, and the tooth grooves are divided into two rows. The two rows of tooth grooves are respectively located on both sides of the rectangular hole 4. The front and rear sides of the top of the pressure ring 11 are integrally formed with insert teeth 12, and the insert teeth 12 are inserted into the tooth grooves.

[0021] The insert teeth 12 are inserted into the tooth grooves to increase the locking effect of the nut 6 on the base 1 , thereby increasing the positioning effect of the second L-plate 3 .

[0022] Specifically, supporting feet can be installed at the four corners of the bottom of the base 1.

[0023] The provision of the supporting feet can make the bottom of the base 1 vacant, making it easier to operate the nut 6.

[0024] Specifically, a limit plate 13 is integrally formed on the left top of the pressure ring 11 , and the front and rear sides of the limit plate 13 respectively fit and slide relative to the front and rear side walls of the rectangular hole 4 , and the height of the limit plate 13 is greater than the height of the inserting gear 12 .

[0025] The front and rear sides of the limit plate 13 respectively fit and slide relative to the inner front and rear side walls of the rectangular hole 4 to limit the movement trajectory of the pressure ring 11, so that when the pressure ring 11 moves toward the base 1 (upward), it can only move upward, avoiding the rotation of the pressure ring 11 and causing wear on the bottom of the base 1.

[0026] Specifically, the outer wall of the internal threaded ring 10 is provided with an annular groove 14, and a circular ring 15 is rotatably installed in the annular groove 14. The shape and size of the circular ring 15 match the internal shape and size of the annular groove 14. The outer wall of the circular ring 15 is integrally formed with a connecting ring 16, and the upper side of the inner wall of the connecting ring 16 is fixedly installed on the outer wall of the pressure ring 11.

[0027] The circular ring 15 can only rotate in the annular groove 14 and cannot move in other directions in the annular groove 14. It is used to make the internal thread ring 10 and the pressure ring 11 rotate relative to each other, so that when the internal thread ring 10 rotates and moves up and down, it can drive the pressure ring 11 to move up and down at the same time, thereby increasing the integrated effect of the internal thread ring 10 and the pressure ring 11.

[0028] Specifically, the inner diameter of the pressure ring 11 is greater than the diameter of the stud 5 , and the inner side wall of the pressure ring 11 does not contact the side wall of the stud 5 .

[0029] Since the inner side wall of the pressing ring 11 does not contact the side wall of the stud 5, it can be avoided that when the pressing ring 11 moves up and down, the inner side wall of the pressing ring 11 contacts the threads on the side wall of the stud 5 and causes wear to the threads.

[0030] Specifically, a rubber layer 17 is embedded on the top of the pressure ring 11 , and the top of the rubber layer 17 is tightly fitted on the bottom of the base 1 .

[0031] The rubber layer 17 is used to increase the pressing effect of the pressure ring 11 on the bottom of the base 1 .

[0032] Working principle: the nut 6 can be loosened to move the second L plate 3 along the rectangular hole 4, and one corner of the square hub 7 is aligned with the first L plate 2. Then the second L plate 3 is moved to clamp it on the other opposite corner of the square hub 7. The internal thread ring 10 is rotated to drive the pressure ring 11 to move upward. The top of the pressure ring 11 is pressed tightly against the bottom of the base 1, and the tooth 12 is inserted into the tooth groove.

[0033] It should be noted that the equipment structure and drawings of this patent mainly describe the principles of this patent. In terms of the technology of this design principle, the settings of the device's power mechanism, power supply system and control system are not fully described. However, on the premise that technical personnel in this field understand the principles of the above patent, they can clearly know the details of its power mechanism, power supply system and control system.

[0034] In the description of this patent, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inside", "front", "center", "two ends" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing this patent and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; at the same time, unless otherwise clearly stipulated and limited, the terms "setting", "installation", "connection", "fixed installation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to the specific circumstances.

[0035] Although the embodiments of the present patent have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present patent, and the scope of the present patent is defined by the appended claims and their equivalents.

Claims

1. A fan hub fixture, characterized in that: The invention comprises a base (1), the top of the base (1) is provided with a square hub (7), the bottom of the square hub (7) is provided with a square hole (8), the top of the square hub (7) is provided with a square groove (9), a first L-plate (2) is fixedly installed on the left side of the top front end of the base (1), the top of the base (1) is provided with an inclined rectangular hole (4), a second L-plate (3) is slidably installed on the top of the base (1), a stud (5) is fixedly installed on the bottom of the second L-plate (3), the bottom end of the stud (5) passes through the rectangular hole (4) and is screwed with a nut (6), the top of the nut (6) is tightly fitted on the bottom of the base (1), and the first L-plate (2) and the second L-plate (3) are respectively clamped on two diagonal corners of the square hub (7); The nut (6) comprises an internal thread ring (10) and a pressure ring (11), wherein the internal thread ring (10) is threaded onto the side wall of the stud (5), and the pressure ring (11) is sleeved onto the stud (5). The top of the internal thread ring (10) is tightly fitted onto the bottom of the pressure ring (11), and the top of the pressure ring (11) is tightly fitted onto the bottom of the base (1). The bottom of the base (1) is provided with continuously distributed tooth grooves, and the tooth grooves are divided into two rows. The two rows of tooth grooves are respectively located on both sides of the rectangular hole (4). The top of the pressure ring (11) is integrally formed with insert teeth (12) on both the front and rear sides, and the insert teeth (12) are inserted into the tooth grooves.

2. A fan hub fixture according to claim 1, characterized in that: Support feet can be installed at the four corners of the bottom of the base (1).

3. The fan hub fixture according to claim 1, characterized in that: A limiting plate (13) is integrally formed on the left side of the top of the pressure ring (11), and the front and rear sides of the limiting plate (13) are respectively fitted and slid relative to the front and rear side walls inside the rectangular hole (4), and the height of the limiting plate (13) is greater than the height of the inserting gear (12).

4. The fan hub fixture according to claim 1, characterized in that: The outer wall of the internal threaded ring (10) is provided with an annular groove (14), a circular ring (15) is rotatably installed in the annular groove (14), the shape and size of the circular ring (15) match the internal shape and size of the annular groove (14), and the outer wall of the circular ring (15) is integrally formed with a connecting ring (16), and the upper side of the inner wall of the connecting ring (16) is fixedly installed on the outer wall of the pressure ring (11).

5. The fan hub fixture according to claim 1, characterized in that: The inner diameter of the pressure ring (11) is greater than the diameter of the stud (5), and the inner side wall of the pressure ring (11) does not contact the side wall of the stud (5).

6. The fan hub fixture according to claim 1, characterized in that: A rubber layer (17) is embedded on the top of the pressure ring (11), and the top of the rubber layer (17) is tightly fitted on the bottom of the base (1).

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