Press-fit shaft-to-hole tooling

Abstract

This invention relates to the field of press-fitting technology for tight-fitting shafts, and proposes a press-fitting shaft alignment fixture for aligning the side holes of a shaft component with the alignment holes on the side of a shaft seat. The fixture includes: a guide plate, vertically positioned beside the shaft seat, with two spaced-apart locating pins on the side facing the shaft seat, each pin corresponding to one of the two alignment holes on the shaft seat. One end of each locating pin is inserted into the alignment hole. Above each locating pin on the guide plate is a vertically positioned directional groove, penetrating the upper end of the guide plate, with its upper part located above the shaft seat; and two directional pins, one slidingly positioned within each directional groove, with their ends inserted into the two side holes of the shaft component. This technical solution solves the problem of inability to guarantee alignment between the side holes of the shaft component and the alignment holes of the shaft seat during existing press-fitting shaft assembly processes.

Description

Technical Field

[0001] This invention relates to the field of press-fitting technology for tight-fitting shafts, and more particularly to press-fitting shaft-to-hole tooling. Background Technology

[0002] When press-fitting a shaft with a tight fit, the shaft needs to be pressed vertically into the shaft hole of the shaft seat. The shaft has side holes along its diameter, and the shaft hole of the shaft seat has alignment holes on its side. After the shaft is installed into the shaft hole, the side holes of the shaft need to be coaxially aligned with the alignment holes on the side of the shaft hole. However, with existing transmission installation methods, the shaft is prone to rotational misalignment during installation, making it impossible to align the side holes of the shaft with the alignment holes of the shaft seat. Furthermore, because the press-fitted shaft is a tight fit, it is difficult to disassemble and adjust later.

[0003] The problem that the side hole of the shaft and the alignment hole of the shaft seat cannot be aligned during the existing tight-fitting shaft press-fitting process needs to be solved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a press-fit shaft alignment tooling that addresses the above-mentioned technical deficiencies. This tooling solves the problem that the side hole of the shaft and the alignment hole of the shaft seat cannot be aligned during the press-fitting of existing tight-fit shafts.

[0005] The technical solution adopted in this invention is: to provide a press-fit shaft alignment tool for aligning the side hole of a shaft with the alignment hole on the side of the shaft hole of a shaft seat, characterized in that it includes:

[0006] A guide plate is used to be vertically installed next to the bearing seat. The side of the guide plate facing the bearing seat has two spaced positioning pins. The two positioning pins correspond to the positions of two alignment holes of the bearing seat. One end of the positioning pin is used to insert into the alignment hole. There is a vertically arranged guide groove directly above each positioning pin on the guide plate. The guide groove passes through the upper end of the guide plate, and the upper part of the guide groove is located above the bearing seat.

[0007] There are two directional pins, and one directional pin is slidably disposed in each directional groove. The ends of the two directional pins are respectively used to insert into the two side holes of the shaft.

[0008] To further optimize this technical solution, the side of the directional plate has two mounting holes, and the directional pin is inserted and fixed in the mounting holes.

[0009] Further optimization of this technical solution also includes:

[0010] A support member is disposed below the shaft hole of the bearing seat to support the bearing seat.

[0011] To further optimize this technical solution, the support member has a base plate and two support sleeves. The support sleeves are fixed on the base plate, and the two support sleeves correspond to the positions of two shaft holes on the bearing seat. The support sleeves are used to support the lower end of the bearing seat.

[0012] To further optimize this technical solution, the upper part of the support sleeve has a clearance hole for accommodating the lower part of the shaft member passing through the shaft hole. The upper end of the support sleeve has an annular convex ring, which is coaxially arranged with the clearance hole and is used to insert into the lower part of the shaft hole of the shaft seat.

[0013] Further optimization of this technical solution also includes:

[0014] A hanging pin is provided on the side of the directional plate and faces the shaft seat. The hanging pin is located between the two directional grooves and is used to hang on the upper end of the shaft seat.

[0015] To further optimize this technical solution, the directional plate has a hanging hole, and the middle part of the hanging pin is inserted and fixed in the hanging hole.

[0016] The beneficial effects of this invention are as follows:

[0017] Before pressing the shaft, the side hole of the shaft and the corresponding alignment hole on the shaft seat are limited to the same vertical plane by using locating pins and directional pins. After the shaft is pressed vertically downward into the shaft seat, the directional groove vertically restricts the movement of the directional pin, so that when the lower part of the shaft is pressed into the shaft hole, the side hole of the shaft and the alignment hole of the shaft seat are vertically aligned. At this time, the shaft and the shaft hole are tightly fitted. After removing the directional pin, the shaft is pressed vertically downward again, so that when the middle part of the shaft is fully pressed into the shaft hole, the side hole of the shaft can be aligned with the alignment hole of the shaft seat. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the vertical cross-sectional structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the directional plate structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the support sleeve structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the top structure of the base plate of the present invention;

[0023] The markings in the diagram are as follows: 1. Shaft; 101. Side hole; 2. Shaft seat; 201. Shaft hole; 202. Alignment hole; 3. Orientation plate; 301. Orientation groove; 302. Mounting hole; 303. Hanging hole; 4. Locating pin; 5. Hanging pin; 6. Orientation pin; 7. Support component; 701. Base plate; 702. Support sleeve; 7021. Clearance hole; 7022. Raised ring; 8. Pressure sleeve. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] To keep the drawings concise, each figure only schematically shows the parts relevant to the invention, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] like Figure 1-5 As shown, the press-fit shaft alignment fixture is used to align the side hole 101 of the shaft 1 with the alignment hole 202 on the side of the shaft hole 201 of the shaft seat 2, and includes:

[0029] A guide plate 3 is vertically mounted next to the bearing seat 2. The side of the guide plate 3 facing the bearing seat 2 has two spaced positioning pins 4, which correspond to the positions of the two alignment holes 202 of the bearing seat 2. One end of the positioning pin 4 is inserted into the alignment hole 202. Above each positioning pin 4 on the guide plate 3, there is a vertically arranged guide groove 301. The guide groove 301 passes through the upper end of the guide plate 3, and the upper part of the guide groove 301 is located above the bearing seat 2.

[0030] There are two directional pins 6, and one directional pin 6 is slidably disposed in each of the directional grooves 301. The ends of the two directional pins 6 are respectively used to insert into the two side holes 101 of the shaft 1.

[0031] The side of the directional plate 3 has two mounting holes 302, and the directional pin 6 is inserted and fixed in the mounting holes 302.

[0032] In use, the ends of the two positioning pins 4 on the positioning plate are respectively inserted into the alignment holes 202 of the two shaft holes 201 of the bearing seat 2. The positioning plate is in a vertical position. The ends of the two directional pins 6 are respectively inserted into the side holes 101 of the two shaft parts 1. Then the shaft part 1 is placed above the shaft hole 201, and the lower part of the shaft part 1 enters the shaft hole 201. The middle parts of the two directional pins 6 are respectively inserted into the two vertical directional grooves 301 from above. The directional pins 6 can slide up and down in the directional grooves 301. Then, the pressure sleeve 8 can be used to fix the upper part of the shaft part 1. The pressure sleeve 8 presses the shaft part 1 vertically downward, and the middle part of the shaft part 1 gradually enters the shaft hole 201, thus directional... The pin 6 slides down in the directional groove 301 to limit and guide, always keeping the side hole 101 of the shaft 1 and the alignment hole 202 of the bearing 2 in the same vertical plane. After the middle part of the shaft 1, which is below the side hole 101, is pressed into the shaft hole 201, the shaft 1 can no longer rotate easily due to the tight fit between the middle part of the shaft 1 and the shaft hole 201. The directional pin 6 can be removed from the side hole 101 of the shaft 1, and then the middle part of the shaft 1 can be pressed vertically downward into the shaft hole 201 until the side hole 101 of the shaft 1 and the alignment hole 202 of the bearing 2 are coaxially aligned. The alignment can be finely adjusted up and down to complete the press-fitting of the tight-fitting shaft 1.

[0033] The guide plate 3 has a plate-like structure with two vertically arranged guide grooves 301 at the top. The guide grooves 301 extend horizontally through both sides of the guide plate 3. The mounting holes 302 and the guide grooves 301 are in one-to-one correspondence. The guide grooves 301 are located directly above the mounting holes 302, ensuring that the side hole 101 of the shaft 1 can correspond to the alignment hole 202 of the bearing seat 2, thus avoiding circumferential offset.

[0034] The guide plate 3 can be positioned by inserting two locating pins 4 into the two alignment holes 202 on the bearing seat 2. The locating pins 4 and the guide pins 6 limit and guide the shaft 1, and the shaft 1 can be vertically pressed into the shaft hole 201 of the bearing seat 2 using existing pressing equipment. The shaft 1 is tightly fitted with the shaft hole 201. The shaft 1 can be moved vertically by the pressing equipment, but it cannot be rotated circumferentially.

[0035] Shaft 1 is a shoe-shaped shaft with a diameter in the middle larger than the diameters on the top and bottom sides. The middle section inserts into the shaft hole 201 of the shaft seat 2, with the side holes 101 located in the middle. Simultaneously guiding and limiting the press-fitting of two shafts 1 allows the two locating pins 4 on the guide plate 3 to insert into the shaft seat 2, achieving relatively stable positioning of the guide plate 3. Of course, it is understandable that more shafts 1 can be guided and limited simultaneously, accommodating an equal number of locating pins 4 and guide pins 6, with the shaft holes 201 on the shaft seat 2 distributed accordingly. Alternatively, only one shaft 1 can be guided and limited, using existing processing methods to fix the guide plate 3 to one side of the shaft seat 2, maintaining the vertical orientation of the guide groove 301.

[0036] Furthermore, it also includes: a support member 7, disposed below the shaft hole 201 of the bearing seat 2, for supporting the bearing seat 2.

[0037] The support member 7 has a base plate 701 and two support sleeves 702. The support sleeves 702 are fixed on the base plate 701. The two support sleeves 702 correspond to the positions of the two shaft holes 201 on the shaft seat 2. The support sleeves 702 are used to support the lower end of the shaft seat 2.

[0038] The upper part of the support sleeve 702 has a clearance hole 7021 for accommodating the lower part of the shaft 1 passing through the shaft hole 201. The upper end of the support sleeve 702 has an annular convex ring 7022. The convex ring 7022 is coaxially arranged with the clearance hole 7021. The convex ring 7022 is used to be inserted into the lower part of the shaft hole 201 of the bearing seat 2.

[0039] In use, the support 7 can provide support around the shaft hole 201 at the lower end of the bearing seat 2, thereby improving stability and making it easier to press the shaft 1 vertically into the shaft hole 201 of the bearing seat 2.

[0040] The support member 7 can be assembled from a base plate 701 and two support sleeves 702. Two holes are provided on the base plate 701 at intervals corresponding to the shaft holes 201. The lower part of the support sleeve 702 is inserted into these holes for fixation. The diameter of the upper clearance hole 7021 of the support sleeve 702 is slightly larger than the lower diameter of the shaft member 1. The support sleeve 702 is supported around the shaft hole 201 at the lower end of the bearing seat 2. The upper protruding ring 7022 of the support sleeve 702 is inserted into the lower part of the shaft hole 201, achieving relatively stable positioning. Simultaneously, the protruding ring 7022 does not affect the installation of the shaft member 1 within the shaft hole 201. The lower part of the clearance hole 7021 has a through hole penetrating the lower part of the support sleeve 702, facilitating venting and pressure stabilization. When the lower part of the shaft member 1 enters the clearance hole 7021, venting can be achieved quickly through the circumferential gaps and the lower through hole, preventing short-term gas compression from generating high pressure that hinders the downward pressure of the shaft member 1.

[0041] Furthermore, it also includes:

[0042] The hanging pin 5 is disposed on the side of the directional plate 3 and faces the bearing seat 2. The hanging pin 5 is located between the two directional grooves 301 and is used to hang on the upper end of the bearing seat 2.

[0043] The directional plate 3 has a hanging hole 303, and the middle part of the hanging pin 5 is inserted and fixed in the hanging hole 303.

[0044] In use, the hanging pin 5 can further securely fix the guide plate 3 to the side of the bearing seat 2. The positioning pin 4 is inserted into the alignment hole 202 of the bearing seat 2, and the hanging pin 5 abuts against the upper end face of the bearing seat 2, forming a stable fixing effect.

[0045] On the directional plate 3, a directional groove 301 is provided at the upper end for vertically guiding and limiting the directional pin 6, which corresponds vertically to the position of the positioning pin 4 below. The directional plate 3 also has an installation hole 302 below the directional groove 301 for installing the positioning pin 4. A hanging hole 303 is provided between the two directional grooves 301 for installing the hanging pin 5. The positioning pin 4 and the hanging pin 5 can be welded and fixed to the positioning plate.

[0046] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A press-fit shaft alignment fixture for aligning the side hole (101) of a shaft (1) with the alignment hole (202) on the side of the shaft hole (201) of a shaft seat (2), characterized in that, include: A guide plate (3) is used to be vertically set on one side of the bearing seat (2). The side of the guide plate (3) facing the bearing seat (2) has two spaced positioning pins (4). The two positioning pins (4) correspond to the positions of the two alignment holes (202) of the bearing seat (2). One end of the positioning pin (4) is used to be inserted into the alignment hole (202). There is a vertically set guide groove (301) directly above each positioning pin (4) on the guide plate (3). The guide groove (301) passes through the upper end of the guide plate (3). The upper part of the guide groove (301) is located above the bearing seat (2). There are two directional pins (6), and one directional pin (6) is slidably disposed in each directional groove (301). The ends of the two directional pins (6) are respectively used to insert into the two side holes (101) of the shaft (1).

2. The press-fit shaft-to-hole tooling according to claim 1, characterized in that, The directional plate (3) has two mounting holes (302) on its side, and the directional pin (6) is inserted and fixed in the mounting holes (302).

3. The press-fit shaft-to-hole tooling according to claim 1, characterized in that, Also includes: A support member (7) is disposed below the shaft hole (201) of the bearing seat (2) for supporting the bearing seat (2).

4. The press-fit shaft-to-hole tooling according to claim 3, characterized in that, The support member (7) has a base plate (701) and two support sleeves (702). The support sleeves (702) are fixed on the base plate (701). The two support sleeves (702) correspond to the positions of the two shaft holes (201) on the shaft seat (2). The support sleeves (702) are used to support the lower end of the shaft seat (2).

5. The press-fit shaft-to-hole tooling according to claim 4, characterized in that, The upper part of the support sleeve (702) has a clearance hole (7021) for accommodating the shaft (1) passing through the lower part of the shaft hole (201). The upper end of the support sleeve (702) has an annular convex ring (7022). The convex ring (7022) is coaxially arranged with the clearance hole (7021). The convex ring (7022) is used to be inserted into the lower part of the shaft hole (201) of the shaft seat (2).

6. The press-fit shaft-to-hole tooling according to claim 1, characterized in that, Also includes: A hanging pin (5) is provided on the side of the directional plate (3) and faces the bearing seat (2). The hanging pin (5) is located between the two directional grooves (301) and is used to hang on the upper end of the bearing seat (2).

7. The press-fit shaft-to-hole tooling according to claim 6, characterized in that, The directional plate (3) has a hanging hole (303), and the middle part of the hanging pin (5) is inserted and fixed in the hanging hole (303).

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