PCD (Polycrystalline Diamond) compound tool with replaceable tool bit

Abstract

The utility model relates to the technical field of PCD (Poly Crystal Diamond) cutters, in particular to a PCD composite cutter with a replaceable cutter head, which comprises a cutter bar, the cutter head is connected above the cutter bar, a slot is arranged at the joint of the cutter bar and the cutter head, mounting structures are arranged on two sides of the slot, and a cooling component is arranged in the middle of each mounting structure. By pulling the pull button of the mounting structure, the pull button can pull the limiting rod to move, the limiting rod can be separated from the inserting groove, at the moment, the two sets of connecting rods of the tool bit are inserted into the inserting groove, the pull button is loosened, and the tension spring on one side of the pull button rebounds the pull button and the limiting rod on one side of the pull button; the connecting rod and the tool bit are fixed through the limiting rod, the detachable replacement effect of the tool bit is achieved, and an arranged cooling assembly can convey external cooling water to a cooling cavity at the position of the tool bit and a circulation opening formed in the surface of the tool bit through a conveying cavity; and the cooling effect on the tool bit is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCD cutters, in particular to a PCD composite cutter with a replaceable cutter head. Background Art

[0002] In the development of mechanical processing and cutting tools, as the processing requirements are getting higher and higher, the requirements for tool accuracy, hardness, life, etc. are also getting higher and higher. From the initial high-speed steel to carbide tools, to artificial diamonds and then to polycrystalline diamonds, artificial diamonds have solved the problems of scarcity and high cost of natural diamonds. PCD tools are polycrystalline diamonds synthesized using modern high-pressure technology. Diamond tools have the characteristics of high hardness and high compressive strength. They have good thermal conductivity and good wear resistance, and can achieve high processing accuracy and efficiency in high-speed cutting.

[0003] The patent specification with announcement number CN207787801U discloses a drilling and reaming composite PCD tool, including a tool body, a V-shaped welding, a tungsten steel body, a first blade and a second blade. A tungsten steel body is welded on the tool body, and the tungsten steel body is welded to the tool body by V-shaped welding. A chip groove is provided on the tungsten steel body, and a first blade is also welded on the tungsten steel body. A tungsten steel drill body is also provided on the front side of the tungsten steel body, and a second blade is provided on the tungsten steel drill body.

[0004] However, in the implementation of relevant technologies, it was found that the tool designed above has the following problems: the tool body of the device is welded to the tungsten steel body, so the tool body and the tungsten steel body cannot be separated, and the first blade and the second blade are also welded to the tungsten steel body. Moreover, since the tungsten steel body and the first blade and the second blade are welded, the first blade and the second blade cannot be replaced. Then, after the first blade and the second blade are used for a long time, the overall structure needs to be directly discarded, which is not conducive to the rational use of materials. In view of this, a PCD composite tool with a replaceable tool head is provided to overcome the above defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a PCD composite tool with a replaceable tool head.

[0006] In order to achieve the above object, the utility model adopts the following technical solution: a PCD composite tool with a replaceable cutter head, comprising a tool bar, a cutter head is connected to the top of the tool bar, a slot is provided at the connection between the tool bar and the cutter head, and mounting structures are provided on both sides of the slot;

[0007] The mounting structure includes a slide groove, which is opened inside the knife rod, and one end of the slide groove is connected to the slot, a fixing plate is fixedly installed inside the slide groove, a limiting rod is passed through the middle of the fixing plate, and a pull button is fixedly installed on the end of the limiting rod away from the slide groove, and the pull button is installed on the outside of the knife rod.

[0008] As a further description of the above technical solution: a tension spring is fixedly installed at one end of the pull button close to the fixed plate, one end of the tension spring is fixedly installed on the pull button, and the other end is fixedly installed on the fixed plate. The tension spring can reset the pull button and the limit rod after the pull button pulls the limit rod.

[0009] As a further description of the above technical solution: two sets of connecting rods are fixedly installed on the bottom end of the cutter head, and a limit groove matching the limit rod is provided at the connection between the connecting rod and the limit rod, and the limit groove is provided on the connecting rod. The limit groove is more conducive to the limit rod clamping the connecting rod and the cutter head to fix the cutter head.

[0010] As a further description of the above technical solution: an empty slot matching the limit rod is provided at the connection between the slot and the limit rod, and the empty slot is provided on one side of the slot. The empty slot allows the limit rod to pass through the connecting rod, thereby better fixing the connecting rod and the cutter head.

[0011] As a further description of the above technical solution: a cooling assembly is arranged in the middle of the installation structure, and the cooling assembly includes a transmission cavity, and the transmission cavity is opened inside the tool rod. A transmission tube is fixedly installed inside the transmission cavity, and one end of the transmission tube passes through the tool head. The cooling assembly can transmit coolant through the transmission tube inside the transmission cavity.

[0012] As a further description of the above technical solution: a plurality of cooling cavities are provided at the connection between the cutter head and the transmission tube, the cooling cavities are provided inside the cutter head, a flow port is provided at the connection between the cutter head and the cooling cavity, the flow port is provided on the surface of the cutter head, the transmission tube can transmit the coolant to the cooling cavity, and utilize the cooling cavity to transmit the coolant to the flow port of the cutter head and flow out, thereby achieving a heat dissipation and cooling effect on the cutter head.

[0013] The utility model has the following beneficial effects:

[0014] (1) By pulling the button of the installation structure, the button can pull the limit rod to move, so that the limit rod can be separated from the slot. At this time, the two sets of connecting rods of the cutter head are inserted into the slot, and the button is released, so that the tension spring on one side of the button rebounds the pull button and the limit rod on one side of the button, so that the limit rod can be inserted into the limit groove of the connecting rod and inserted into the slot. The connecting rod and the cutter head are fixed by the limit rod, so that the cutter head can be detached and replaced.

[0015] (2) The coolant can be transferred to the cooling chamber through the transfer pipe, and then transferred to the flow port of the cutter head through the cooling chamber and retained, thereby achieving a heat dissipation and cooling effect on the cutter head. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the cutter head of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the side surface of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure inside the cutter head of the utility model.

[0020] Legend:

[0021] 1. Cutter bar; 2. Cutter head; 3. Slot; 4. Mounting structure; 401. Slide groove; 402. Fixing plate; 403. Limit rod; 404. Pull button; 5. Tension spring; 6. Connecting rod; 7. Limit groove; 8. Empty groove; 9. Cooling assembly; 901. Transmission cavity; 902. Transmission tube; 10. Cooling cavity; 11. Flow port. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1, reference Figure 1-4 The utility model provides a PCD composite tool with a replaceable cutter head: comprising a tool bar 1, a cutter head 2 is connected to the top of the tool bar 1, a slot 3 is provided at the connection between the tool bar 1 and the cutter head 2, and mounting structures 4 are provided on both sides of the slot 3;

[0024] The mounting structure 4 includes a slide groove 401, which is opened inside the knife rod 1, and one end of the slide groove 401 is connected to the slot 3, a fixed plate 402 is fixedly installed inside the slide groove 401, a limit rod 403 is passed through the middle of the fixed plate 402, a pull button 404 is fixedly installed on the end of the limit rod 403 away from the slide groove 401, the pull button 404 is installed on the outside of the knife rod 1, and a tension spring 5 is fixedly installed on the end of the pull button 404 close to the fixed plate 402, one end of the tension spring 5 is fixedly installed on the pull button 404, and the other end is fixedly installed on the fixed plate 402, and the tension spring 5 can be realized after the pull button 404 pulls the limit rod 403 , the pull button 404 and the limit rod 403 can be reset, two groups of connecting rods 6 are fixedly installed at the bottom end of the cutter head 2, and a limit groove 7 matching the limit rod 403 is provided at the connection between the connecting rod 6 and the limit rod 403, and the limit groove 7 is provided on the connecting rod 6, and the limit groove 7 is more conducive to the limit rod 403 clamping the connecting rod 6 and the cutter head 2, so as to fix the cutter head 2, and an empty groove 8 matching the limit rod 403 is provided at the connection between the slot 3 and the limit rod 403, and the empty groove 8 is provided on one side of the slot 3, and the empty groove 8 can facilitate the limit rod 403 to pass through the connecting rod 6, so that the effect of fixing the connecting rod 6 and the cutter head 2 is better.

[0025] Embodiment 2. In addition to all the technical features of Embodiment 1, this embodiment also includes: a cooling component 9 is arranged in the middle of the mounting structure 4, the cooling component 9 includes a transmission cavity 901, the transmission cavity 901 is opened inside the tool rod 1, a transmission tube 902 is fixedly installed inside the transmission cavity 901, one end of the transmission tube 902 passes through the tool head 2, and the cooling component 9 can transmit coolant through the transmission tube 902 inside the transmission cavity 901.

[0026] A plurality of cooling cavities 10 are provided at the connection between the cutter head 2 and the transmission tube 902. The cooling cavities 10 are provided inside the cutter head 2. A flow port 11 is provided at the connection between the cutter head 2 and the cooling cavity 10. The flow port 11 is provided on the surface of the cutter head 2. The transmission tube 902 can transmit the coolant to the cooling cavity 10, and utilize the cooling cavity 10 to transmit the coolant to the flow port 11 of the cutter head 2 and flow out, thereby achieving a heat dissipation and cooling effect on the cutter head 2.

[0027] In specific implementation, when the cutter head 2 is finished using, the transmission cavity 901 and the transmission tube 902 can be connected to the external cooling water transmission pipeline. When the external transmission pipeline is connected, the cooling water is transmitted through the transmission tube 902, and the transmission tube 902 transmits the cooling water to the cooling cavity 10 of the cutter head 2. The inside of the cutter head 2 is cooled through the cooling cavity 10, and finally the cooling water flows out through the circulation port 11.

[0028] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PCD composite tool with a replaceable cutter head, comprising a cutter bar (1), a cutter head (2) being connected to the top of the cutter bar (1), a slot (3) being provided at the connection between the cutter bar (1) and the cutter head (2), and mounting structures (4) being provided on both sides of the slot (3); The mounting structure (4) comprises a slide groove (401), wherein the slide groove (401) is provided inside the knife rod (1), and one end of the slide groove (401) is connected to the slot (3), a fixing plate (402) is fixedly installed inside the slide groove (401), a limiting rod (403) is passed through the middle of the fixing plate (402), and a pull button (404) is fixedly installed at one end of the limiting rod (403) away from the slide groove (401), and the pull button (404) is installed on the outside of the knife rod (1).

2. The PCD composite tool with replaceable tool head according to claim 1, characterized in that: A tension spring (5) is fixedly mounted on one end of the pull button (404) close to the fixed plate (402); one end of the tension spring (5) is fixedly mounted on the pull button (404), and the other end is fixedly mounted on the fixed plate (402).

3. The PCD composite tool with replaceable tool head according to claim 1, characterized in that: Two groups of connecting rods (6) are fixedly mounted on the bottom end of the cutter head (2); a limiting groove (7) matching the limiting rod (403) is provided at the connection between the connecting rod (6) and the limiting rod (403); and the limiting groove (7) is provided on the connecting rod (6).

4. The PCD composite tool with replaceable tool head according to claim 1, characterized in that: An empty slot (8) matching the limiting rod (403) is provided at the connection between the slot (3) and the limiting rod (403), and the empty slot (8) is provided on one side of the slot (3).

5. The PCD composite tool with replaceable tool head according to claim 1, characterized in that: A cooling assembly (9) is arranged in the middle of the mounting structure (4), and the cooling assembly (9) comprises a transmission cavity (901), the transmission cavity (901) is opened inside the cutter rod (1), a transmission tube (902) is fixedly installed inside the transmission cavity (901), and one end of the transmission tube (902) passes through the cutter head (2).

6. The PCD composite tool with replaceable tool head according to claim 1, characterized in that: A plurality of cooling cavities (10) are provided at the connection between the cutter head (2) and the transmission tube (902); the cooling cavities (10) are provided inside the cutter head (2); a flow opening (11) is provided at the connection between the cutter head (2) and the cooling cavities (10); the flow opening (11) is provided on the surface of the cutter head (2).

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