Casting datum hole burr removing tool

Abstract

The utility model discloses a casting datum hole burr removing tool which comprises a body, a hammer head, an ejector pin and a sealing end, the body comprises a sliding connecting rod, a limiting platform and an ejector pin connecting rod which are sequentially connected from top to bottom, and a through hole matched with the sliding connecting rod is formed in the middle of the hammer head. The hammer head is connected to the sliding connecting rod in a sliding mode through the through hole, the ejector pin is connected with the lower end of the ejector pin connecting rod through a connecting part at the upper end, and a working part at the lower end of the ejector pin is used for impacting burrs on a casting datum hole. According to the tool for removing the aluminum flash of the basic hole of the casting, the hammer head is designed on the body, so that the knocking accuracy of the hammer head is improved, the situation that the casting body and the casting are scrapped when burrs of the basic hole are repaired, and the potential safety hazard that a human body is injured due to the fact that the hammer head is obliquely smashed is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle casting, in particular to a tool for removing burrs from a reference hole of a casting. Background Art

[0002] With the progress of social environment and the advancement of intelligent products, the promotion of new energy vehicle related products and technologies has become a trend. New energy vehicle related products pose certain challenges to the current foundry industry. The internal structure and shape of traditional conventional product castings are relatively simple, and the processing and positioning methods are relatively simple. However, new energy vehicle parts are highly functional and have a more complex structure than traditional products, so the corresponding processing and positioning methods also need to be innovated.

[0003] The circular or elliptical reference hole of the casting body is also called a mainstream positioning method of processing positioning. For the circular or elliptical reference holes formed in the casting body, the circular or elliptical reference holes of the casting are often blocked by the transverse aluminum flash, and the blocked transverse aluminum flash needs to be removed during the repair process. The existing method of removing aluminum flash is: hold the ejector with one hand, press it against the root of the flash, hold the hammer with the other hand, and use the hammer to knock the top of the ejector to knock off the aluminum flash. However, this operation method uses two hands to operate in coordination, and requires extremely high accuracy of knocking. Once a knocking error occurs, it is very easy to damage the casting body, and there is a safety hazard of the hammer hitting the hand during the operation. Therefore, for safety reasons, this repair method takes a long time and has low operating efficiency, which is very unfavorable for mass production operations in the workshop. Utility Model Content

[0004] The utility model aims to provide a burr removal tool for a reference hole of a casting in view of the defects of the prior art.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A burr removal tool for a casting reference hole, characterized in that it comprises a main body, a hammer head, and an ejector, wherein the main body comprises a sliding connecting rod, a limiting platform, and an ejector connecting rod which are sequentially connected from top to bottom, a through hole matching the sliding connecting rod is provided in the middle of the hammer head, the hammer head is slidably connected to the sliding connecting rod through the through hole, the ejector is connected to the lower end of the ejector connecting rod through a connecting portion at the upper end, and a working portion at the lower end of the ejector is used to strike the burrs on the casting reference hole.

[0007] Furthermore, a sealing end is connected to the top of the sliding connecting rod, and a diameter of the sealing end is larger than a diameter of the sliding connecting rod.

[0008] Furthermore, the diameter of the limiting platform is greater than the diameter of the hammer head.

[0009] Furthermore, the ejector pin is made of wear-resistant material.

[0010] Furthermore, the ejector pin is a detachable structure, and is movably connected to the mounting hole at the lower end of the ejector pin connecting rod through a cylindrical connecting portion.

[0011] Compared with the prior art, the utility model has the following beneficial effects: 1. The ejector pin and the hammer head adopt an integrated structure, and the hammer head is designed on the main body of the tooling for removing the aluminum flash of the reference hole of the casting, which improves the accuracy of the hammer head's knocking, prevents the burrs of the reference hole and the casting body from being damaged during repair, resulting in the casting being scrapped, and avoids the safety hazard of the hammer head being crooked and injuring the human body; 2. The ejector pin adopts a detachable structure, which is convenient for switching between different types of ejectors and replacement after wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0013] Figure 2 It is a schematic diagram of the main body structure in the embodiment;

[0014] Figure 3 It is a schematic diagram of the hammer head structure in the embodiment;

[0015] Figure 4 Schematic diagram of the ejector pin structure in the embodiment.

[0016] Wherein: 1-main body, 2-hammer head, 3-thimble, 4-sealing end, 11-sliding connecting rod, 12-limiting platform, 13-thimble connecting rod, 14-mounting hole, 21-through hole, 31-connecting part, 32-working part. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. This embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Figure 1-4 The present invention shows a specific embodiment of a burr removal tool for a casting reference hole, comprising a body 1, a hammer head 2, an ejector pin 3, and a sealing end 4. The body 1 comprises a sliding connecting rod 11, a limiting platform 12, and an ejector pin connecting rod 13 which are sequentially connected from top to bottom. A through hole 21 matching the sliding connecting rod 11 is provided in the middle of the hammer head 2. The hammer head 2 is slidably connected to the sliding connecting rod 11 through the through hole 21. The ejector pin 3 is connected to the lower end of the ejector pin connecting rod 13 through a connecting portion 31 at the upper end. The working portion 32 at the lower end of the ejector pin 3 is used to strike the burrs on the casting reference hole.

[0021] The sealing end 4 is connected to the top of the sliding connecting rod 11, and the diameter of the sealing end 4 is larger than the diameter of the sliding connecting rod 11. The diameter of the limiting platform 12 is larger than the diameter of the hammer head 2.

[0022] The ejector pin 3 is a detachable structure, and is movably connected to the mounting hole 14 at the lower end of the ejector pin connecting rod 13 through a cylindrical connecting portion 31, so as to facilitate the switching of ejectors of different types and replacement after wear. At the same time, the ejector pin 3 is made of wear-resistant material to reduce wear during use and extend the service life.

[0023] When the above embodiment is used, the working part 32 at the lower end of the ejector 3 is pressed against the aluminum flash of the reference hole of the casting, and the ejector connecting rod 13 of the main body 1 is held with one hand, and the hammer head 2 is held with the other hand. First, the hammer head 2 is lifted upward along the sliding connecting rod 11 until the upper end of the hammer head 2 is pressed against the sealing end 4, and then the hammer head 2 is quickly slid downward, and the lower end of the hammer head 2 is used to forcefully strike the limiting platform 12, and the striking force is transmitted to the contact point between the working part 32 of the ejector 3 and the aluminum flash of the reference hole of the casting through the main body 1. The above action is repeated many times until the aluminum flash of the reference hole of the casting is knocked off.

[0024] The above specific implementation methods are only for illustrating the technical concept and structural features of the utility model, and the purpose is to enable relevant persons familiar with this technology to implement them accordingly. However, the above content does not limit the protection scope of the utility model. Any equivalent changes or modifications made based on the spirit of the utility model should fall within the protection scope of the utility model.

Claims

1. A tool for removing burrs from a casting reference hole, characterized in that: The invention comprises a body (1), a hammer head (2) and an ejector pin (3). The body (1) comprises a sliding connecting rod (11), a limiting platform (12) and an ejector pin connecting rod (13) which are sequentially connected from top to bottom. A through hole (21) which matches the sliding connecting rod (11) is arranged in the middle of the hammer head (2). The hammer head (2) is slidably connected to the sliding connecting rod (11) through the through hole (21). The ejector pin (3) is connected to the lower end of the ejector pin connecting rod (13) through a connecting portion (31) at the upper end. The working portion (32) at the lower end of the ejector pin (3) is used to strike burrs on a reference hole of a casting.

2. According to claim 1, a casting reference hole burr removal tool is characterized in that: The top of the sliding connecting rod (11) is connected to a sealing end (4), and the diameter of the sealing end (4) is larger than the diameter of the sliding connecting rod (11).

3. According to claim 1, a casting reference hole burr removal tool is characterized in that: The diameter of the limiting platform (12) is greater than the diameter of the hammer head (2).

4. The casting reference hole burr removal tool according to claim 1, characterized in that: The ejector pin (3) is made of wear-resistant material.

5. The tool for removing burrs from a casting reference hole according to claim 1, characterized in that: The ejector pin (3) is a detachable structure and is movably connected to the mounting hole (14) at the lower end of the ejector pin connecting rod (13) via a cylindrical connecting portion (31).

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