Tap wrench of ejector core rod and manufacturing method of tap wrench
A manufacturing method and a technology for mandrels, which are used in manufacturing tools, metal processing equipment, tangent devices, etc., can solve the problems of high labor intensity, small activity space, long maintenance time, etc., and achieve reduced labor intensity, high connection stability, Long service life effect
Inactive Publication Date: 2019-04-12
GUANGXI YUCHAI MASCH CO LTD
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Due to the long service life and the corrosion of the cleaning agent, it is easy to cause the problem of broken nails when replacing or repairing the mandrel.
After taking out the broken nail or re-drilling the hole, it is necessary to use a tap to re-tap the teeth. However, due to the small space for movement due to the large number of mandrels, the conventional open-toothed tap cannot be operated. It is necessary to separate the entire lower core box from the mandrel. Long maintenance time, high labor intensity and low efficiency
Method used
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Embodiment Construction
[0022] The present invention will be further described below in conjunction with the specific embodiments in the accompanying drawings.
[0023] refer to figure 1 As shown, a screw tapping wrench for a mandrel ejector of the present invention includes a handle body 1 and a handle handle 2, wherein the handle body 1 is a round steel with a diameter of 10 mm to 14 mm and a length of 80 mm to 120 mm. One end is provided with a deep hole 3 for matching connection with the tap, the diameter of the deep hole 3 is 1mm smaller than the diameter of the tap, and the other end of the handle body 1 is vertically fixed on the handle handle 2 to form a T-shaped tap wrench. The handle handle 2 is a round steel with a diameter of 8 mm to 12 mm and a length of 60 mm to 100 mm, and the other end of the handle body 1 is vertically fixed at the center of the handle handle 2, so that the handle handle 2 is evenly stressed. Preferably, the handle body 1 is a round steel with a diameter of 12 mm an...
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Abstract
The invention discloses a tap wrench of an ejector core rod. The tap wrench comprises a handle body and a handle shank, wherein the handle body is round steel with the diameter of 10-14 mm, and the length of 80-120 mm, a deep hole used for being connected with a screw tap in a matched mode is formed in one end of the handle body, the diameter of the deep hole is 1 mm smaller than that of the screwtap, and the other end of the handle body is vertically fixed on the handle shank. According to the tap wrench, the size is small, the use is convenient, the screw tap is matched for using, so that on the premise that a cold box is not disassembled, an installation hole fastening the ejector core rod can be quickly tapped, the working efficiency is greatly improved, and the labor intensity is reduced. The invention further discloses a manufacturing method of the tap wrench of the ejector core rod. The tap wrench manufactured through the method has the characteristics of being high in strength, high in connection stability and long in service life.
Description
technical field [0001] The invention relates to a cold box maintenance tool and a manufacturing method thereof, more specifically, it relates to a tap wrench for a core rod and a manufacturing method thereof. Background technique [0002] At present, in the cast cold box mold, the screws commonly used to fasten the ejector core rod are M5, M6, and M8. Due to the long service life and the corrosion of the cleaning agent, it is easy to cause the problem of broken nails when the mandrel is replaced or repaired. After taking out the broken nail or re-drilling the hole, it is necessary to use a tap to re-tap the teeth. However, due to the small space for movement due to the large number of mandrels, the conventional open-toothed tap cannot be operated. It is necessary to separate the entire lower core box from the mandrel. The maintenance time is long, and there are problems of high labor intensity and low efficiency at the same time. Contents of the invention [0003] One of...
Claims
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IPC IPC(8): B23G1/26B23P15/00
CPCB23G1/26B23P15/00
Inventor 林强黎坤
Owner GUANGXI YUCHAI MASCH CO LTD