Hard alloy bar with spiral hole

Abstract

The utility model relates to the technical field of alloy bar machining, in particular to a spiral hole hard alloy bar which comprises a bar body, a spiral cooling channel and a linear cooling channel are formed in the bar body, the linear cooling channel is located on one side of the spiral cooling channel, and the spiral cooling channel is communicated with the linear cooling channel. A plurality of communicating holes are formed in the spiral cooling channel and the linear cooling channel, and the spiral cooling channel is communicated with the linear cooling channel through the communicating holes; a movable pipe is arranged in the linear cooling channel, the outer wall of the movable pipe is tightly attached to the inner wall of the linear cooling channel, and a through hole matched with the communicating hole in the linear cooling channel is formed in the movable pipe. The spiral cooling channel and the linear cooling channel which are communicated with each other are arranged in the bar body, the movable pipe is arranged in the linear cooling channel, and the movable pipe and the spiral cooling channel can be communicated or blocked, so that the shunting and control of cooling liquid are realized, and the cooling effect of the bar is further improved.

Description

Technical Field

[0001] This utility model relates to the field of alloy bar processing technology, and specifically to a spiral hole cemented carbide bar. Background Technology

[0002] Cemented carbide, due to its high hardness, high strength, and wear resistance, is widely used in cutting tools, molds, and cutting tools. However, existing cemented carbide bars are prone to damage due to excessively high temperatures during use, and the cooling effect on the bars is poor, affecting product lifespan and production efficiency. Therefore, developing a cemented carbide bar with better cooling performance is of great significance. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a spiral hole cemented carbide rod that can further improve the cooling effect of the rod and increase its service life.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A spiral-hole cemented carbide rod includes a rod body with a spiral cooling channel and a straight cooling channel inside. The straight cooling channel is located on one side of the spiral cooling channel, and both the spiral and straight cooling channels have several connecting holes, which connect the spiral and straight cooling channels. A movable tube is installed inside the straight cooling channel, with its outer wall tightly attached to the inner wall of the straight cooling channel. The movable tube has through holes that match the connecting holes on the straight cooling channel. When the movable tube is rotated until the through hole connects with the connecting hole on the straight cooling channel, the spiral cooling channel connects with the movable tube, allowing coolant to flow between the spiral cooling channel and the movable tube. The rod body is cooled simultaneously through the detachable movable tube and the spiral cooling channel, further improving the cooling effect. When coolant only needs to flow into the spiral cooling channel or the movable tube, the movable tube can be rotated until the through hole does not connect with the connecting hole on the straight cooling channel, making it flexible and convenient to use.

[0006] Furthermore, two spiral cooling channels are provided.

[0007] Furthermore, the inlet ends of both spiral cooling channels are connected to liquid inlets provided on the rod body, and the coolant enters through the liquid inlets and is diverted into the two spiral cooling channels.

[0008] Furthermore, two linear cooling channels are provided.

[0009] Furthermore, the two straight cooling channels are located on both sides of the spiral cooling channel.

[0010] Furthermore, a fixed rod is provided at one end of the movable tube, and a screw is threadedly connected to the fixed rod. Two blind holes are opened on the end face of the rod body. The two blind holes are symmetrical about the movable tube and can be threadedly connected to the screw. When the screw is threadedly connected to one of the blind holes, the through hole is exactly connected to the connecting hole on the movable tube. When the screw is threadedly connected to the other blind hole, the through hole is not connected to the connecting hole on the movable tube.

[0011] Furthermore, the fixed rod is arranged perpendicular to the movable tube, and the screw is arranged parallel to the movable tube, which facilitates installation and allows the movable tube to be stably connected to the rod body.

[0012] Furthermore, one end of the movable tube is provided with a detachable cover, which can be threadedly connected to the movable tube. The cover can be removed to directly inject coolant into the movable tube; the other end of the movable tube is open.

[0013] Furthermore, the outer wall of the rod is provided with external threads.

[0014] Furthermore, the linear cooling channel has a cylindrical structure, which facilitates the installation and rotation of the movable tube.

[0015] Technical effects of this utility model:

[0016] Compared with the prior art, the present invention provides a spiral hole cemented carbide rod by setting interconnected spiral cooling channels and straight cooling channels in the rod body, and setting a movable tube in the straight cooling channel. The movable tube can be connected to or blocked by the spiral cooling channel, thereby realizing the diversion and control of coolant, further improving the cooling effect of the rod, while also improving the service life and flexibility of the product, making it better able to meet actual needs. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the helical hole cemented carbide rod of Embodiment 1 of this utility model;

[0018] Figure 2 This is a left view of the rod body in Embodiment 1 of this utility model;

[0019] Figure 3 This is a schematic diagram of the active tube structure of Embodiment 1 of this utility model;

[0020] Figure 4 This is a schematic diagram of the spiral hole cemented carbide rod structure of Embodiment 2 of this utility model.

[0021] In the diagram, 1 is the rod; 2 is the spiral cooling channel; 3 is the straight cooling channel; 4 is the connecting hole; 5 is the movable tube; 6 is the through hole; 7 is the liquid inlet; 8 is the fixed rod; 9 is the blind hole; 10 is the cover; 11 is the screw; and 12 is the external thread. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0023] Example 1

[0024] like Figure 1-3 As shown, this embodiment relates to a spiral-hole cemented carbide rod, comprising a rod body 1. Two spiral cooling channels 2 and two straight cooling channels 3 are formed within the rod body 1. A liquid inlet 7 is provided at the end of the rod body 1. The inlet ends of both spiral cooling channels 2 are connected to the liquid inlet 7, and coolant enters through the liquid inlet 7 and is diverted into the two spiral cooling channels 2.

[0025] The two linear cooling channels 3 are located on opposite sides of the spiral cooling channel 2, and both the spiral cooling channel 2 and the linear cooling channel 3 have several connecting holes 4, connecting them. The linear cooling channel 2 and the linear cooling channel 3 are connected through the connecting holes 4. The linear cooling channel 3 has a cylindrical structure, and a movable tube 5 is installed inside it. The outer wall of the movable tube 5 is in close contact with the inner wall of the linear cooling channel 3, and the movable tube 5 has through holes 6 that match the connecting holes 4 on the linear cooling channel 3.

[0026] A fixing rod 8 is provided at one end of the movable tube 5, perpendicular to the movable tube 5. A screw 11 parallel to the movable tube 5 is threadedly connected to the fixing rod 8. Two blind holes 9 are provided on the end face of the rod body 1, symmetrical about the movable tube 5, and both can be threadedly connected to the screw 11. When the screw 11 is threadedly connected to one of the blind holes 9, the through hole 6 communicates with the connecting hole 4 on the movable tube 5. When the screw 11 is threadedly connected to the other blind hole 9, the through hole 6 does not communicate with the connecting hole 4 on the movable tube 5. Preferably, a detachable cover 10 is provided at one end of the movable tube 5, which can be threadedly connected to the movable tube 5. The cover 10 can be removed to directly inject coolant into the movable tube 5. The other end of the movable tube 5 is an open structure, through which coolant flows out.

[0027] Working Principle: When the bar described in this invention processes a metal workpiece, coolant is introduced through the inlet 7 and diverted to two spiral cooling channels 2, flowing out from the other end of the spiral cooling channels 2. This cools the metal workpiece and prevents damage due to excessive temperature. To further improve the cooling effect, the movable tube 5 is rotated until the through hole 6 connects with the connecting hole 4 on the straight cooling channel 3. At this time, the spiral cooling channel 2 is connected to the movable tube 5 (one end of the movable tube 5 is sealed by the cover 10), allowing the coolant to flow between the spiral cooling channel 2 and the movable tube 5, thereby achieving the purpose of coolant diversion and improving the cooling effect of the bar 1. When it is necessary to inject coolant back into the movable tube 5, the movable tube 5 can be rotated until the through hole 6 is no longer connected to the connecting hole 4 on the straight cooling channel 3. The positioning and installation between the movable tube 5 and the bar 1 are achieved through the fixing rod 8 and the screw 11, which is simple to operate and highly stable.

[0028] Example 2

[0029] like Figure 4 As shown, the spiral hole cemented carbide rod involved in this embodiment is basically the same as that in embodiment 1, except that the outer wall of the rod body 1 is provided with an external thread 12.

[0030] The above-described specific embodiments are merely specific examples of this utility model. The patent protection scope of this utility model includes, but is not limited to, the above-described specific embodiments. Any appropriate changes or modifications made by a person skilled in the art that conform to the claims of this utility model should fall within the patent protection scope of this utility model.

Claims

1. A cemented carbide rod with a spiral hole, characterized in that, The device includes a rod body, within which spiral cooling channels and straight cooling channels are formed. The straight cooling channels are located on one side of the spiral cooling channels, and both the spiral and straight cooling channels have several connecting holes, which connect the spiral and straight cooling channels. A movable tube is installed inside the straight cooling channel, with its outer wall tightly attached to the inner wall of the straight cooling channel. The movable tube has through holes that match the connecting holes on the straight cooling channel.

2. The helical bore cemented carbide rod according to claim 1, characterized in that, Two spiral cooling channels are provided.

3. The helical bore cemented carbide rod according to claim 2, characterized in that, The inlet ends of both spiral cooling channels are connected to the liquid inlet provided on the rod.

4. The helical bore cemented carbide rod according to claim 1, characterized in that, Two linear cooling channels are provided.

5. The helical bore cemented carbide rod according to claim 4, characterized in that, The two straight cooling channels are located on either side of the spiral cooling channel.

6. The helical bore cemented carbide rod according to claim 1, characterized in that, A fixed rod is provided at one end of the movable tube, and a screw is threadedly connected to the fixed rod. Two blind holes are opened on the end face of the rod body. The two blind holes are symmetrical about the movable tube and can be threadedly connected to the screw.

7. The helical bore cemented carbide rod according to claim 6, characterized in that, The fixed rod is arranged perpendicular to the movable tube, and the screw is arranged parallel to the movable tube.

8. The helical bore cemented carbide rod according to claim 1, characterized in that, One end of the movable tube is provided with a detachable cover.

9. The helical bore cemented carbide rod according to claim 1, characterized in that, The described straight cooling channel has a cylindrical structure.

10. The helical bore cemented carbide bar according to any one of claims 1-9, characterized in that, The outer wall of the rod is threaded.

Images