Screw tap with diamond-like coating

Abstract

The utility model relates to the technical field of screw taps, and discloses a screw tap with a diamond-like coating, which comprises a taper shank, one end of the taper shank is fixedly connected with a screw tap joint, four screw tap blades are inserted into the surface of the outer wall of the screw tap joint through insertion blocks, a plurality of insertion grooves corresponding to the insertion blocks are formed in the surface of the outer wall of the screw tap joint, and the insertion blocks are inserted into the insertion grooves. Four chip grooves are formed in the surface of the outer wall of the screw tap connector, and a limiting block is arranged in the screw tap connector. According to the screw tap with the diamond-like coating, through matched arrangement of the screw tap connector, the inserting blocks, the screw tap blades, the inserting grooves, the chip discharging grooves, the limiting blocks, the inserting holes, the limiting rods, the fixing block and the fastening bolts, when the screw tap is used, the inserting blocks at the bottoms of the four screw tap blades are inserted into the inserting grooves in the screw tap connector, and then the four limiting rods at one end of the fixing block are inserted into the inserting holes; and then fastening bolts are sequentially screwed into the fixing blocks and the limiting blocks to be fixed, so that the damaged screw tap cutting edge can be conveniently replaced, and the cost is effectively saved.

Description

Technical Field

[0001] This utility model relates to the field of tap technology, specifically a tap with a diamond-like coating. Background Technology

[0002] A tap is a cutting tool used for machining internal threads, with grooves along the axial direction. It is also called a screw tap. Taps are classified into straight flute taps, spiral flute taps, and pointed taps (apical taps) according to their shape. They are simple in structure, easy to use, and can be operated manually or on machine tools. They are widely used in production, and for small-sized internal threads, taps are almost the only machining tool.

[0003] Most existing taps with diamond-like carbon coating are one-piece structures. During long-term processing, the tap teeth are prone to excessive wear and need to be replaced. Currently, when replacing a tap, the entire tap must be replaced, not just the tap cutting edge, which leads to a waste of resources. Therefore, this utility model provides a tap with diamond-like carbon coating. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a tap with a diamond-like coating, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a tap with a diamond-like coating, comprising a tap shank, one end of which is fixedly connected to a tap connector, four tap cutting edges being inserted into the outer wall surface of the tap connector via insert blocks, a plurality of slots corresponding to the insert blocks being formed on the outer wall surface of the tap connector, four chip removal grooves being formed on the outer wall surface of the tap connector, a limiting block being provided inside the tap connector, and both the insert block and the limiting block having insertion holes, into which a limiting rod is inserted, one end of which is fixedly connected to a fixing block, and the fixing block and the limiting block being fixedly connected by fastening bolts.

[0008] Preferably, the number of limiting rods is four.

[0009] Preferably, the surface of the chip removal groove is provided with a coolant outlet hole.

[0010] Preferably, a square head is fixedly connected to the other end of the tapered handle.

[0011] Preferably, the surface of the tap cutting edge is provided with a DLC coating.

[0012] Preferably, both the taper shank and the square head have coolant guide grooves that communicate with the inside of the tap joint.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the present invention provides a tap with a diamond-like coating, which has the following beneficial effects:

[0015] This diamond-like carbon coated tap is designed with a tap connector, insert blocks, tap cutting edges, slots, chip removal grooves, limit blocks, insertion holes, limit rods, fixing blocks, and fastening bolts. In use, the insert blocks at the bottom of the four tap cutting edges are inserted into the slots on the tap connector, and then the four limit rods at one end of the fixing block are inserted into the insertion holes. Finally, the fastening bolts are screwed into the fixing block and the limit blocks in sequence for fixation. This facilitates the replacement of damaged tap cutting edges and effectively saves costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is an exploded view of the structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the structure of this utility model.

[0019] In the diagram: 1. Tap shank 2. Tap connector 3. Insert block 4. Tap blade 5. Slot 6. Chip removal groove 7. Limiting block 8. Insertion hole 9. Limiting rod 10. Fixing block 11. Fastening bolt 12. Liquid outlet hole 13. Square head. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-3This utility model provides a technical solution: It includes a taper shank 1, one end of which is fixedly connected to a tap connector 2. Four tap blades 4 are inserted into the outer surface of the tap connector 2 via insert blocks 3. The outer surface of the tap connector 2 has several slots 5 corresponding to the insert blocks 3. Four chip removal grooves 6 are also formed on the outer surface of the tap connector 2. A limiting block 7 is provided inside the tap connector 2. Insertion holes 8 are formed inside both the insert blocks 3 and the limiting blocks 7. Limiting rods 9 are inserted into the insertion holes 8. One end of the limiting rod 9 is fixedly connected to a fixing block 10. The fixing block 10 and the limiting block 7 are fixedly connected by fastening bolts 11. There are four limiting rods 9. Coolant outlet holes 12 are formed on the surface of the chip removal grooves 6. The other end of the handle 1 is fixedly connected to a square head 13. It is configured by the cooperation of tap connector 2, insert block 3, tap blade 4, slot 5, chip removal groove 6, limit block 7, insertion hole 8, limit rod 9, fixing block 10 and fastening bolt 11. When in use, insert blocks 3 at the bottom of the four tap blades 4 are inserted into the slot 5 on the tap connector 2, and then the four limit rods 9 at one end of the fixing block 10 are inserted into the insertion hole 8. Then the fastening bolt 11 is screwed into the fixing block 10 and the limit block 7 in sequence for fixation. This makes it easy to replace the damaged tap blades 4 and effectively saves costs. The surface of the tap blades 4 is coated with DLC. The inside of both the tap handle 1 and the square head 13 is provided with coolant guide grooves that communicate with the inside of the tap connector 2.

[0022] In summary, this diamond-like carbon coated tap, through the coordinated arrangement of tap connector 2, insert block 3, tap cutting edge 4, slot 5, chip removal groove 6, limit block 7, insertion hole 8, limit rod 9, fixing block 10 and fastening bolt 11, is used by inserting the insert block 3 at the bottom of the four tap cutting edges 4 into the slot 5 on the tap connector 2, then inserting the four limit rods 9 at one end of the fixing block 10 into the insertion hole 8, and then screwing the fastening bolt 11 into the fixing block 10 and the limit block 7 in sequence for fixation. This facilitates the replacement of damaged tap cutting edges 4 and effectively saves costs.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tap having a diamond-like coating comprising a tap shank (1), characterized in that: One end of the taper handle (1) is fixedly connected with the tap adapter (2), the outer wall surface of the tap adapter (2) is inserted with four tap blades (4) through the insertion block (3), the outer wall surface of the tap adapter (2) is provided with a plurality of insertion grooves (5) corresponding to the insertion block (3), the outer wall surface of the tap adapter (2) is provided with four chip removal grooves (6), the inside of the tap adapter (2) is provided with a limiting block (7), the inside of the insertion block (3) and the limiting block (7) is provided with an insertion hole (8), the inside of the insertion hole (8) is inserted with a limiting rod (9), one end of the limiting rod (9) is fixedly connected with a fixed block (10), the fixed block (10) and the limiting block (7) are fixedly connected through the fastening bolt (11).

2. A tap having a diamond-like coating according to claim 1, characterized in that: The number of the limiting rod (9) is four.

3. The tap having a diamond-like carbon coating according to claim 1, wherein: The surface of the chip removal groove (6) is provided with a cooling liquid outlet hole (12).

4. The tap having a diamond-like carbon coating according to claim 1, wherein: The other end of the taper handle (1) is fixedly connected with the square head (13).

5. The tap with a diamond-like coating according to claim 1, characterized in that: The surface of the tap blade (4) is provided with a DLC coating.

6. The tap with a diamond-like coating according to claim 1, characterized in that: The inside of the taper handle (1) and the square head (13) is provided with a cooling liquid flow guide groove in communication with the inside of the tap adapter (2). The number of the limiting rod (9) is four. The surface of the chip removal groove (6) is provided with a cooling liquid outlet hole (12). The other end of the taper handle (1) is fixedly connected with the square head (13). The surface of the tap blade (4) is provided with a DLC coating. The inside of the taper handle (1) and the square head (13) is provided with a cooling liquid flow guide groove in communication with the inside of the tap adapter (2).

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