A high-strength screw tip tap structure

Abstract

This utility model relates to the field of screw taps and discloses a high-strength screw tap structure, including a support rod. A cutting part is fixedly disposed on the lower end face of the support rod. A mounting plate is fixedly disposed on the upper end of the outer surface of the support rod. A retaining ring is bolted to the upper end face of the mounting plate. Retaining blocks are fixedly disposed on the front and rear sides of the upper end face of the mounting plate. An extrusion block is fixedly disposed on the upper end face of the support rod. The extrusion block has retaining interfaces at both its front and rear ends. A reinforcing core is fixedly disposed inside the support rod. The outer surface of the cutting part is coated with a CVD thick film coating. In this utility model, a fixing bolt can be placed inside the lower end of the retaining block. The mounting plate and retaining ring are fixed by the fixing bolt. During use, the retaining ring engages with the corresponding structure at the lathe connection point when the extrusion block is connected to the lathe. After installation, the engagement of the retaining ring can be observed to determine if the device is installed at an angle.

Description

Technical Field

[0001] This utility model relates to the field of screw taps, and in particular to a high-strength screw tap structure. Background Technology

[0002] A tip tap (also known as a point tap) is a cutting tool designed for efficient machining of through-hole threads. It has a slanted groove or helical groove at the front end of the cutting part to form a negative cutting edge angle, so that the chips are discharged out of the hole along the feed direction, avoiding chip entanglement and scratching of the threads. At the same time, the core diameter is large, the torsional strength is high, it can withstand greater cutting forces, and reduce the risk of breakage.

[0003] Existing screw taps are generally made of high-speed steel, which is low in cost and can process ordinary carbon steel, alloy steel, cast iron and aluminum alloy. However, their performance is slightly insufficient for high-strength, difficult-to-machine materials or high-requirement working conditions. Forcing their use can easily damage the screw taps.

[0004] Therefore, those skilled in the art have provided a high-strength screw tip tap structure to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-strength screw-tap structure. The fixing bolts allow the mounting plate and the snap ring to be fixed together. During use, the snap ring can engage with the structure at the lathe connection point when the extrusion block is connected to the lathe. By observing the connection point, it can be determined whether the device is installed correctly.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-strength screw tip tap structure, including a support rod, a cutting part fixedly provided on the lower end face of the support rod, a mounting plate fixedly provided on the upper end of the outer surface of the support rod, a snap ring bolted to the upper end face of the mounting plate, snap blocks fixedly provided on the front and rear sides of the upper end face of the mounting plate, and a pressing block fixedly provided on the upper end face of the support rod;

[0007] The extrusion block has a locking interface at both the front and rear ends. A reinforcing core is fixedly installed inside the support rod. A CVD thick film coating is provided on the outer surface of the cutting part. The material used for the cutting part is powder metallurgy high-speed steel. The material used for the support rod is cobalt-containing high-speed steel. The material used for the reinforcing core is cemented carbide.

[0008] Furthermore, four reinforcing strips are fixedly installed on the outer surface of the support rod.

[0009] Furthermore, the reinforcing strip is made of titanium alloy.

[0010] Furthermore, a fixing bolt is threaded onto the lower end face of the mounting plate.

[0011] Furthermore, a rubber ring is fitted onto the outer surface of the support rod.

[0012] Furthermore, the rubber ring is made of natural rubber.

[0013] Furthermore, the mounting plate is made of high-vanadium high-speed steel.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model proposes a high-strength screw tip tap structure. The support rod is made of cobalt-containing high-speed steel, with cobalt added to the interior. The lower end face of the support rod is fixed with a cutting part. The cutting part can drill threaded holes in the material during use. The material used for the cutting part is powder metallurgy high-speed steel, which has extremely high hardness and wear resistance, as well as excellent toughness. Compared with cutting parts made of high-speed steel, it is less prone to chipping and breakage. A CVD thick film coating is provided on the surface of the cutting part, which can increase the wear resistance of the cutting part and make it more durable.

[0016] 2. This utility model proposes a high-strength screw tap structure. An installation plate is fixed to the upper end of the outer surface of the support rod. Two snap-fit ​​blocks are fixed to the upper end of the installation plate. When the snap-fit ​​ring is installed on the installation plate, the snap-fit ​​blocks can be snapped into the corresponding grooves. The lower end of the snap-fit ​​blocks can be fitted with fixing bolts. The installation plate and the snap-fit ​​ring can be fixed by fixing bolts. When the snap-fit ​​ring is connected to the lathe, it can be snapped into the corresponding structure at the connection point of the lathe. After the device is installed, it can be observed whether the snap-fit ​​ring is engaged, so as to know whether the device is installed tilted. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main axial view of the present invention;

[0018] Figure 2 This is a bottom-view axial side view of the present invention;

[0019] Figure 3 This is a top-view axonometric schematic diagram of the present invention;

[0020] Figure 4 This is a front view schematic diagram of the present utility model.

[0021] Legend:

[0022] 1. Support rod; 2. Reinforcing strip; 3. Rubber ring; 4. Cutting part; 5. Mounting plate; 6. Snap block; 7. Snap ring; 8. Extrusion block; 9. Snap interface; 10. Fixing bolt; 11. Reinforcing core. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1-4 An embodiment of this utility model is provided: a high-strength screw tip tap structure, including a support rod 1, a cutting part 4 fixedly provided on the lower end face of the support rod 1, an mounting plate 5 fixedly provided on the upper end of the outer surface of the support rod 1, a snap ring 7 bolted to the upper end face of the mounting plate 5, snap blocks 6 fixedly provided on the front and rear sides of the upper end face of the mounting plate 5, and an extrusion block 8 fixedly provided on the upper end face of the support rod 1.

[0025] The extrusion block 8 has a card interface 9 at both the front and rear ends. The support rod 1 has a reinforcing core 11 fixed inside. The outer surface of the cutting part 4 is coated with a CVD thick film coating. The material used for the cutting part 4 is powder metallurgy high-speed steel. The material used for the support rod 1 is cobalt-containing high-speed steel. The material used for the reinforcing core 11 is cemented carbide.

[0026] Specifically, the main structure of the device includes a support rod 1. The support rod 1 is thicker than the connecting rod of a regular screw tap, giving it greater strength. The support rod 1 is made of cobalt-containing high-speed steel, with cobalt added to enhance its strength. A cutting part 4 is fixed to the lower end of the support rod 1. The cutting part 4 can create threaded holes in the material. The cutting part 4 is made of powder metallurgy high-speed steel, which has extremely high hardness and wear resistance, as well as excellent toughness, making it less prone to chipping and breakage compared to cutting parts made of pure high-speed steel. A CVD thick film coating is applied to the surface of the cutting part 4 to further increase its wear resistance and make it more durable. The support rod 1 has an upper mounting plate 5 fixed on its outer surface. The upper end of the mounting plate 5 has two snap-fit ​​blocks 6 fixed on it. When the mounting plate 5 is used to install the snap-fit ​​ring 7, the snap-fit ​​blocks 6 can snap into the corresponding grooves. The lower end of the snap-fit ​​blocks 6 can be fitted with fixing bolts 10. The fixing bolts 10 can fix the mounting plate 5 and the snap-fit ​​ring 7. When the extrusion block 8 is connected to the lathe, the snap-fit ​​ring 7 can snap into the structure corresponding to the lathe connection. After the device is installed, the snap-fit ​​ring 7 can be observed to see if it is engaged, which indicates whether the device is installed at an angle. The front end of the extrusion block 8 is provided with a snap-fit ​​interface 9. When the device is installed, the snap-fit ​​interface 9 can make the connection between the extrusion block 8 and the connection more secure.

[0027] Reference Figure 1-4 Four reinforcing strips 2 are fixedly installed on the outer surface of the support rod 1. The reinforcing strips 2 are made of titanium alloy. The lower end face of the mounting plate 5 is threaded with fixing bolts 10. The outer surface of the support rod 1 is fitted with rubber rings 3. The rubber rings 3 are made of natural rubber. The mounting plate 5 is made of high vanadium high-speed steel.

[0028] Specifically, during use, the support rod 1 has four reinforcing strips 2 fixed to its outer surface. The reinforcing strips 2 are made of titanium alloy, giving them strong corrosion resistance and tensile strength. The reinforcing strips 2 are set on the outer surface of the support rod 1, which makes the support rod 1 stronger. The outer surface of the support rod 1 is provided with two rubber rings 3. When the device is not in use and is placed down, the rubber rings 3 on the outer surface of the support rod 1 can provide support, preventing the support rod 1 from being placed directly on the ground. When the device is in use, the rubber rings 3 can be removed. The rubber rings 3 are made of natural rubber, giving them stronger elasticity and deformation recovery ability. During use, the mounting plate 5 can be used to install the snap rings 7. The mounting plate 5 is made of high vanadium high-speed steel, which gives it strong wear resistance.

[0029] Working principle: The support rod 1 is thicker than the connecting rod of a regular screw tap, giving it greater strength. The support rod 1 is made of cobalt-containing high-speed steel, with cobalt added to enhance its strength. The lower end face of the support rod 1 is fixed with a cutting part 4, which can create threaded holes in the material. The cutting part 4 is made of powder metallurgy high-speed steel, which has extremely high hardness and wear resistance, as well as excellent toughness, making it less prone to chipping and breakage compared to cutting parts made of high-speed steel.

[0030] A mounting plate 5 is fixed to the upper end of the outer surface of the support rod 1. Two snap-fit ​​blocks 6 are fixed to the upper end of the mounting plate 5. When the snap-fit ​​ring 7 is installed on the mounting plate 5, the snap-fit ​​blocks 6 can snap into the corresponding groove. The lower end of the snap-fit ​​block 6 can be fitted with a fixing bolt 10. The mounting plate 5 and the snap-fit ​​ring 7 can be fixed by the fixing bolt 10. When the snap-fit ​​ring 7 is in use, it can snap into the corresponding structure at the connection point of the lathe when the extrusion block 8 is connected to the lathe. After the device is installed, you can observe whether the snap-fit ​​ring 7 is engaged to know whether the device is installed tilted.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high strength screw point tap structure comprising a support shank (1), characterized in that: The lower end face of the support rod (1) is fixedly provided with a cutting part (4), the upper end of the outer surface of the support rod (1) is fixedly provided with a mounting plate (5), the upper end face of the mounting plate (5) is bolted with a snap ring (7), the front and rear of the upper end face of the mounting plate (5) are fixedly provided with snap blocks (6), and the upper end face of the support rod (1) is fixedly provided with a pressing block (8). The extrusion block (8) has card interfaces (9) at both the front and rear ends. The support rod (1) has a reinforcing core (11) fixedly installed inside. The outer surface of the cutting part (4) is coated with a CVD thick film coating. The material used for the cutting part (4) is powder metallurgy high-speed steel. The material used for the support rod (1) is cobalt-containing high-speed steel. The material used for the reinforcing core (11) is cemented carbide.

2. The high strength screw point tap structure of claim 1, wherein: The outer surface of the support rod (1) is fixedly provided with four reinforcing strips (2).

3. The high strength screw point tap structure of claim 2, wherein: The reinforcing strip (2) is made of titanium alloy.

4. The high strength point tap structure of claim 1 wherein: The mounting plate (5) has a fixing bolt (10) threaded on its lower end face.

5. The high strength point tap structure of claim 1 wherein: A rubber ring (3) is fitted on the outer surface of the support rod (1).

6. The high strength point tap structure of claim 5 wherein: The rubber ring (3) is made of natural rubber.

7. The high strength point tap structure of claim 1 wherein: The mounting plate (5) is made of high-vanadium high-speed steel.

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