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A universal tap wrench
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A technology of tap wrench and tap, which is applied in the field of mechanical processing tools, can solve the problems of inconvenient use of extension rods, poor connection stability, and influence on machining accuracy, so as to save time for finding and installing extension rods, improve work efficiency, and improve practicality. sexual effect
Active Publication Date: 2019-08-09
张荣斌
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Problems solved by technology
[0003] 1. The tap wrench in the prior art is not equipped with an extension rod, which cannot meet the requirements in many cases. It is inconvenient to use an extension rod when using it, and the existence of the fit gap in the external extension rod makes it difficult to use. When connecting the tap, the connection stability is poor, and the machining accuracy is affected during use
[0004] 2. The tap wrench in the prior art can only be used with a tap of one size after the extension rod is added. When processing internal threads with different parameters, the extension rod needs to be replaced continuously, which is troublesome to operate.
Method used
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Embodiment 1
[0030] Such as Figure 1 to Figure 5 As shown, in this embodiment, a universal tap wrench includes a tap seat 1, an A handle 2 connected to the left end of the tap seat 1, and a B handle 3 connected to the right end of the tap seat 1, and there are size specifications on the tap seat 1. Different stepped holes 4, and a booster rod 5 is installed in the stepped hole 4, and the upper end of the booster rod 5 is provided with a step 6 corresponding to the stepped hole 4. As the best implementation mode of this embodiment, the stepped hole 4. The shapes of the relay stem 5 and the step 6 are all set to be square, so that the booster rod can rotate with the rotation of the tap seat, and the gap between the square fit is small, so that the matching precision of the booster rod and the stepped hole is higher.
[0031] In this embodiment, a taper hole 10 is provided on the reinforcing rod 5 at a position corresponding to the lower surface of the tap seat 1, and the A taper hole 8 that...
Embodiment 2
[0036] Embodiment 2 is the same as Embodiment 1, except that the wear-resistant iron alloyalloy is composed of the following alloying elements in mass fraction: C is 0.35%, Si is 0.35%, Nd is 0.5%, and Cr is 0.9%. W is 1.5%, Zr is 0.46%, Cu is 0.18%, Al is 2.0%, and the balance is iron.
Embodiment 3
[0038] Embodiment 3 is the same as Embodiment 1 and Embodiment 2, except that the wear-resistant iron alloy alloy is composed of the following alloying elements in mass fraction: C is 0.38%, Si is 0.23%, Nd is 0.3%, Cr 0.6% for W, 1.2% for W, 0.35% for Zr, 0.15% for Cu, 1.3% for Al, and the balance is iron.
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Abstract
The invention discloses a universal tap wrench. The universal tap wrench comprises a screw tap seat, a handle a and a handle b connected to the two sides of the screw tap seat, wherein non-cylindrical stepped holes are formed in the screw tap seat; a stress applying rod is installed in each stepped hole in a sliding mode; a step corresponding to the corresponding stepped hole is formed in the upper portion of each stress applying rod; the lower end face of each stress applying rod is provided with a screw tap connecting groove; the size specifications of the stepped holes and the stress applying rods matched with the stepped holes are more than one. By adopting the structure, the universal tap wrench is suitable for screw taps with different specifications, and is simple in structure, stable in performance and low in manufacturing cost.
Description
technical field [0001] The invention relates to the field of machining tools, in particular to a universal tap wrench. Background technique [0002] The tap wrench clamps the tap when tapping, and transmits the force applied by the user to the tap wrench to the tap, so that the tap can process internal threads in the drilled hole. The tap wrench in the prior art has the following disadvantages: [0003] 1. The tap wrench in the prior art is not equipped with an extension rod, which cannot meet the requirements in many cases. It is inconvenient to use an extension rod when using it, and the existence of the fit gap in the external extension rod makes it difficult to use. When connecting the tap, the connection stability is poor, and the machining accuracy is affected during use. [0004] 2. The tap wrench in the prior art can only be used with a tap of one size after the extension rod is added, and the extension rod needs to be constantly replaced when processing internal th...
Claims
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Application Information
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