Brazed manganese steel cutter

Abstract

The invention relates to the technical field of machining cutters, in particular to a brazing manganese steel cutter which comprises a cutter body, a cutter cavity is formed in the cutter body, the cutter cavity is directly communicated with the upper end and the lower end of the cutter body, cutter position grooves directly communicated with the upper end and the lower end of the cutter body are formed in the two sides of the cutter cavity, and cutter handles are filled in the cutter position grooves. The tool bits are brazed at the bottom ends of the tool handles, so that the two tool handles are symmetrically arranged on the two sides of the adjusting column, the inner faces of the two tool handles face the adjusting column, the welding ends of the tool handles and the tool bits are corrected through the positioning relation of the tool position grooves, and it is guaranteed that the tool handles and the tool bits are located on the same straight line; in the later use process, the cutter handle drives the cutter head to adjust the position in the cutter position groove. In addition, in the brazing process of the cutter, a clamping tool or mechanism is omitted.

Description

Technical Field

[0001] The invention relates to the technical field of machining tools, in particular to a brazed manganese steel tool. Background Art

[0002] Tool brazing refers to a method of forming machined tools by heating the tool head and tool handle to their melting point respectively and then quickly welding the two together. Machined tools using brazing technology have the advantages of small deformation after welding, smooth and beautiful joints, and small workload of welding point grinding.

[0003] In the welding process, in order to ensure that the cutter head and the tool handle will not bend or deform after welding, they are often fixed by a clamp, and clamping is required during welding, which affects work efficiency; when the cutter head is close to the tool handle, it is restricted by the end of the tool handle, making it difficult to grind the front angle of the cutter head; when processing hole parts, the coolant cannot be reasonably applied to the tool body according to the hole depth, resulting in poor cooling effect. Summary of the invention

[0004] In order to solve the above-mentioned various problems, the present invention provides a brazed manganese steel tool, including a tool body, a tool cavity is provided in the tool body, the tool cavity directly passes through the upper and lower ends of the tool body, tool position grooves are provided on both sides of the tool cavity directly passing through the upper and lower ends of the tool body, a tool handle is filled in the tool position groove, a tool head is brazed on the bottom end of the tool handle, a bearing is tightly fixed in the middle of the tool cavity, an adjustment column is installed in the tool cavity, the bottom end of the adjustment column is assembled on the bearing, the two tool position grooves are symmetrically arranged on both sides of the adjustment column, so that the two tool handles are symmetrically arranged on both sides of the adjustment column, the inner surfaces of the two tool handles face the adjustment column, and the inner surfaces of the two tool handles are provided with a thread structure that cooperates with the outer surface of the adjustment column, when the adjustment column rotates forward and reversely, the thread structure is used to lift the two tool handles in the two tool position grooves, and the two tool handles lift the two tool heads;

[0005] A step is provided at the connection between the top ends of the two knife heads and the bottom ends of the knife handle, a step ring is provided in the knife cavity, the step faces the bottom surface of the step ring, a spring is filled in the knife cavity, the bottom end of the spring elastically contacts the step, and the top end of the spring elastically contacts the bottom surface of the step ring. When the knife head rises, the step is used to apply force to the bottom end of the spring, and the spring is pushed to compress and shorten upward. When the knife head descends, the thrust acting on the spring from the bottom end gradually decreases, and the spring is elastically stretched downward.

[0006] First through holes are provided on both sides of the bottom end of the knife body, and the first through holes on both sides are symmetrically located on both sides of the spring. When the spring is compressed and shortened, its pitch is gradually compressed and reduced relative to the inner side of the first through hole.

[0007] As a further preferred embodiment, the bottom end of the tool body is provided with a tapered portion which gradually tapers downward, and the bottom end of the tool slot is directly connected to the tool cavity from the tapered surface of the tapered portion upward, so that the tapered surface of the tapered portion forms an outer area surface and an inner area surface located on both sides of the tool slot, and the outer area surface is higher than the inner area surface, and the bottom end of the tool head is provided with a cutting portion which expands in the outer diameter direction, and the top end of the cutting portion is located at the bottom of the outer area surface, and a height difference gap is formed between the top end of the cutting portion and the bottom of the outer area surface.

[0008] As a further preference, the first through holes on the same side are at least two locations, one at the top and the other at the bottom, and the first through hole on the bottom side is close to being above the step.

[0009] As a further preferred embodiment, a second through hole is formed at the bottom end of the conical portion, the top end of the second through hole is communicated with the knife cavity, the top end of the second through hole is also communicated with the inside of the spring, and the top end of the second through hole is also communicated with the inside and outside of the first through holes on both sides;

[0010] A conical transition portion is provided at the connection between the top end of the second through hole and the knife cavity, and the conical transition portion gradually becomes thinner toward the second through hole.

[0011] As a further preference, a thin rod is provided at the bottom end of the adjusting column, and the thin rod is assembled on the bearing.

[0012] As further preferred, the bearing is fixed above the step ring, and the bottom surface of the bearing is limited on the top surface of the step ring.

[0013] As a further preferred embodiment, the inner side surface of the knife handle is provided with an arc surface, the knife cavity is a circular hole, and the arc surface on the inner side surface of the knife handle and the circular inner surface of the knife cavity coincide with each other on the same circumference;

[0014] The outer surface of the spring smoothly contacts the arc surface of the knife handle, and the outer surface of the spring smoothly contacts the circular inner surface of the knife cavity.

[0015] As a further preferred embodiment, a hexagonal hole is provided downward from the top end of the adjusting column, and a tapered surface is provided on the outer peripheral surface of the knife body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the tool welds the manganese steel blade to the handle, the handle can be inserted into the tool slot of the tool first, and the handle can be pushed hard to make the welding end leak out from the bottom of the tool slot, and the top of the blade can be docked on the bottom of the handle, and then the welding ends of the two are heated to the melting point by a high-temperature flame to braze the two together, and finally the top of the handle is pulled up hard, and the bottom end that leaks out is used to pull the blade into the tool slot together. At this time, since the welding ends of the blade and the handle are in a high-temperature melting state, when their welding ends are pulled back into the tool slot, the groove surface of the tool slot can be used to smooth the melting point, and at the same time, the positioning relationship of the tool slot can be used to correct the welding ends of the handle and the blade to ensure that the handle and the blade are in the same straight line, which is conducive to the handle with the blade to adjust the position in the tool slot in the later use process. In addition, the tool saves the clamping tool or mechanism in the brazing process.

[0018] 2. The heat generated during machining is relatively small, so the spring is compressed and shortened at this time, and the flow rate of coolant entering the tool cavity through the first through hole is small. The amount of coolant entering the tool can meet the cooling requirements, and the excess coolant directly acts on other parts of the tool, which helps to quickly cool the outside of the tool; on the contrary, through the above adjustment method, when the cutter head is adjusted downward relative to the bottom of the cutter body, the spring becomes longer, and the gap between each pitch of the spring becomes larger, that is, more coolant will enter the tool cavity through the first through hole. Since the cutter head is adapted to deep hole processing when adjusted upward, the heat generated during machining is relatively high. The spring becomes longer at this time, and the flow rate of coolant entering the tool cavity through the first through hole is large, which accelerates cooling during deep hole processing. Therefore, when processing holes, the present invention can reasonably apply coolant to the tool body according to the hole depth to improve the cooling effect.

[0019] 3. The cutting part is adjusted downward relative to the bottom of the cutter body to increase the height difference between the cutting part and the bottom of the outer surface. This height difference is the area where the grinding wheel grinds the cutting part. After this adjustment, the grinding wheel can complete the grinding work within a larger height difference, avoiding the bottom of the cutter body from affecting the rotation of the grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional perspective schematic diagram of a brazed manganese steel tool provided in an embodiment of the present invention;

[0021] Figure 2 A brazed manganese steel tool provided in an embodiment of the present invention is composed of Figure 1 The schematic diagram from the upward perspective is introduced;

[0022] Figure 3 A schematic diagram of a cut-away brazed manganese steel tool provided in an embodiment of the present invention;

[0023] Figure 4A schematic diagram of a brazed manganese steel cutting tool provided in an embodiment of the present invention after a cutting body is removed;

[0024] Figure 5 A brazed manganese steel tool provided in an embodiment of the present invention is composed of Figure 4 A schematic diagram from another perspective;

[0025] Figure 6 A schematic diagram of a welded combination of a shank and a cutter head in a brazed manganese steel cutter provided in an embodiment of the present invention moving downward along a cutter slot.

[0026] In the figure: 1. tool body; 2. tool cavity; 3. tool position groove; 4. tool handle; 5. tool head; 6. bearing; 7. adjustment column; 8. threaded structure; 9. step; 10. step ring; 11. spring; 12. first through hole; 13. tapered portion; 14. cutting portion; 15. height difference gap; 16. second through hole; 17. tapered transition portion; 18. thin rod; 19. arc surface; 20. outer area surface; 21. inner area surface; 22. inner hexagonal hole; 23. tapered surface. DETAILED DESCRIPTION

[0027] The above and other embodiments and advantages of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0028] In one embodiment, Figure 1-Figure 6 As shown:

[0029] The present embodiment provides a brazed manganese steel tool, comprising a tool body 1, a tool cavity 2 is provided in the tool body 1, the tool cavity 2 is directly connected to the upper and lower ends of the tool body 1, tool slots 3 are provided on both sides of the tool cavity 2 and are directly connected to the upper and lower ends of the tool body 1, a tool handle 4 is filled in the tool slot 3, a tool head 5 is brazed at the bottom end of the tool handle 4, a bearing 6 is tightly fixed in the middle of the tool cavity 2, an adjustment column 7 is installed in the tool cavity 2, the bottom end of the adjustment column 7 is assembled on the bearing 6, two tool slots 3 are symmetrically located on both sides of the adjustment column 7, so that two tool handles 4 are symmetrically located on both sides of the adjustment column 7, the inner surfaces of the two tool handles 4 face the adjustment column 7, and a threaded structure 8 is provided on the inner surfaces of the two tool handles 4 and is matched with the outer surface of the adjustment column 7, when the adjustment column 7 rotates forward and reversely, the threaded structure 8 is used to lift the two tool handles 4 in the two tool slots 3, and the two tool handles 4 lift the two tool heads 5;

[0030] A step 9 is provided at the connection between the top ends of the two cutting heads 5 and the bottom ends of the cutting handles 4, a step ring 10 is provided in the cutting chamber 2, the step 9 faces the bottom surface of the step ring 10, the cutting chamber 2 is filled with a spring 11, the bottom end of the spring 11 elastically contacts the step 9, and the top end of the spring 11 elastically contacts the bottom surface of the step ring 10. When the cutting head 5 rises, the step 9 is used to apply force to the bottom end of the spring 11, and the spring 11 is pushed upward to be compressed and shortened. When the cutting head 5 descends, the thrust acting from the bottom end on the spring 11 gradually decreases, and the spring 11 is elastically stretched downward; the first through hole 12 on the same side is at least two upper and lower locations, and the first through hole 12 on the bottom side is close to the top of the step 9, that is, the first through hole 12 is opened within the installation range of the spring 11.

[0031] First through holes 12 are provided on both sides of the bottom end of the blade body 1 , and the first through holes 12 on both sides are symmetrically located on both sides of the spring 11 . When the spring 11 is compressed and shortened, its pitch is gradually compressed and reduced relative to the inner side of the first through hole 12 .

[0032] A hexagonal hole 22 for rotating the adjusting column 7 by an hexagonal wrench is provided downward from the top of the adjusting column 7, and a tapered surface 23 is provided on the outer surface of the cutter body 1. When in use, the cutter body 1 is mounted on the tailstock of a horizontal machine tool through the tapered surface 23, or mounted on the clamping sleeve of a vertical machine tool. For example, a drill clamp is installed on the tailstock of a common drilling machine. If the cutter is to be mounted on the drilling machine, such a tapered surface 23 is provided on the cutter sleeve where the cutter is located, and the cutter can be fixed by using the tapered surface 23 to forcefully hit the drill clamp with the cutter.

[0033] The top of the cutter head 5 is connected to the bottom end of the cutter head 5 by the tool, and the top of the cutter head 5 is connected to the bottom end of the cutter head 5 by the tool. In addition, the tool also saves clamping tools or mechanisms during the brazing process.

[0034] When processing a shallow hole of a workpiece, it is not necessary for the cutter head 5 to leak out too long from the bottom of the cutter body 1. Therefore, by using the structure of the cutter handle 4 in the cutter slot 3, the cutter head 5 can be adjusted inward along the cutter slot 3. The adjusting column 7 is rotated. Since the height position of the adjusting column 7 remains unchanged, the two cutter handles 4 are raised along the two cutter slots 3 by the transmission relationship of the thread structure 8 when it rotates. The two cutter heads 5 are raised by the two cutter handles 4 to a position that can satisfy the processing of the shallow hole. On the contrary, when processing a deep hole of a workpiece, it is necessary to adjust the cutter head 5 downward, rotate the adjusting column 7 in the opposite direction, and the adjusting column 7 is driven by the thread structure 8. Since the height position of the adjusting column 7 remains unchanged, the two cutter handles 4 are lowered along the two cutter slots 3 by the transmission relationship of the thread structure 8 when it rotates in the opposite direction. The two cutter heads 5 are lowered by the two cutter handles 4 to a position that can satisfy the processing of the deep hole. It can be seen that the two cutter heads 5 are installed on the two cutter slots 3 in a sliding fit manner, so that the two cutter heads 5 can meet the requirements for different deep processing.

[0035] Since the two cutter heads 5 can adjust their positions on the cutter slot 3, when the cutter head 5 needs to be polished after machining, this adjustment method is also used to adjust the cutter head 5 downward. At this time, the cutter head 5 is far away from the bottom end of the cutter body 1, and the cutting portion 14 is the part where the cutter head 5 participates in cutting. Therefore, when the cutter head 5 is adjusted downward, it is equivalent to that the cutting portion 14 is also adjusted downward relative to the bottom end of the cutter body 1, which makes the height difference gap 15 between the cutting portion 14 and the bottom of the outer area surface 20 farther away. This height difference gap 15 is the area when the grinding wheel polishes the cutting portion 14. After this adjustment, the grinding wheel can complete the grinding work within the larger height difference gap 15, avoiding the bottom end of the cutter body 1 from affecting the rotation of the grinding wheel. The adjustment of this height difference gap 15 comes from the adjustment action of the cutter head 5 descending along the cutter slot 3, and the descent of the cutter head 5 is completed by the descent of the tool handle 4, and the descent of the tool handle 4 is also completed by the rotation of the adjustment column 7 through the relationship with the threaded structure 8 on the inner surface of the tool handle 4 to complete the transmission action. Therefore, the tool handle 4 adopts a structural mode of adjusting the height by the adjusting column 7, which is not only used to adjust the tool head 5 to participate in the processing of different deep holes, but also facilitates the grinding of the tool head 5 after adjustment.

[0036] When the cutter head 5 participates in the workpiece hole processing, heat will also be generated. When the coolant is provided to the cutter head 5, the coolant enters the cutter cavity 2 through the first through holes 12 on both sides to fully cool the inside and outside of the cutter. Compared with the existing cutter structure, the internal and external cooling method is more thorough. Through the above adjustment method, when the cutter head 5 is adjusted upward relative to the bottom end of the cutter body 1, the cutter head 5 will also use the top step 9 to push the spring 11 upward to compress and shorten the spring 11, thereby reducing the gap between each pitch of the spring 11, that is, less coolant will enter the cutter cavity 2 through the first through hole 12. Since the cutter head 5 is adapted to shallow hole processing when adjusted upward, the heat generated during machining is relatively small, so the spring 11 is compressed at this time. The spring 11 is shortened, and the flow rate of the coolant entering the tool cavity 2 through the first through hole 12 is small. The amount of coolant entering the tool can meet the cooling requirements. The excess coolant directly acts on other parts of the tool, which helps to quickly cool the outside of the tool. On the contrary, through the above adjustment method, when the cutter head 5 is adjusted downward relative to the bottom of the cutter body 1, the spring 11 becomes longer, thereby the gap between each pitch of the spring 11 becomes larger, that is, more coolant will enter the tool cavity 2 through the first through hole 12. Since the cutter head 5 is adapted to deep hole processing when adjusted upward, the heat generated during machining is relatively high. At this time, the spring 11 becomes longer, and the flow rate of the coolant entering the tool cavity 2 through the first through hole 12 is large, which accelerates cooling during deep hole processing. Therefore, when processing holes, the present invention can reasonably apply coolant to the tool body according to the hole depth to improve the cooling effect.

[0037] A conical transition portion 17 is provided at the connection between the top end of the second through hole 16 and the knife cavity 2 , and the conical transition portion 17 gradually becomes thinner toward the second through hole 16 .

[0038] A thin rod 18 is provided at the bottom end of the adjusting column 7 , and the thin rod 18 is assembled on the bearing 6 .

[0039] The bearing 6 is fixed above the step ring 10 , and the bottom surface of the bearing 6 is limited to the top surface of the step ring 10 .

[0040] The inner side surface of the knife handle 4 is provided with an arc surface 19, the knife cavity 2 is a circular hole, and the arc surface 19 on the inner side surface of the knife handle 4 and the circular inner surface of the knife cavity 2 coincide with each other on the same circumference;

[0041] A second through hole 16 is provided at the bottom end of the tapered portion 13, the top end of the second through hole 16 is communicated with the knife cavity 2, the top end of the second through hole 16 is also communicated with the inside of the spring 11, and the top end of the second through hole 16 is also communicated with the inside and outside of the first through holes 12 on both sides; the coolant enters the knife cavity 2 through the first through hole 12 for cooling, and is then discharged outward through the second through hole 16.

[0042] The outside of the spring 11 is in contact with the curved surface 19 of the handle of a knife 4 smoothly, and the outside of the spring 11 is in contact with the circular inner surface of the knife chamber 2 smoothly. Under the positioning guidance of the curved surface 19, the spring 11 is compressed or lengthened to prevent bending deformation.

[0043] The above orientation designations do not represent the specific orientations of the components in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme, and the orientations are described relatively with reference to the figures. In essence, the specific orientations of the components are described according to their actual installation and actual use as well as the customary orientations of technicians in this field. This is hereby explained.

[0044] The specific implementation methods described above further describe the invention purpose, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, 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 brazed manganese steel tool, characterized in that: The present invention comprises a knife body (1), wherein a knife cavity (2) is provided in the knife body (1), wherein the knife cavity (2) directly passes through the upper and lower ends of the knife body (1), and knife slots (3) directly pass through the upper and lower ends of the knife body (1) are provided on both sides of the knife cavity (2), wherein a knife handle (4) is filled in the knife slot (3), and a knife head (5) is brazed at the bottom end of the knife handle (4), and a bearing (6) is tightly fixed in the middle of the knife cavity (2), and an adjusting column (7) is installed in the knife cavity (2), and the bottom end of the adjusting column (7) is assembled on the bearing (6), and the two adjusting columns (7) are arranged on the knife cavity (2). The tool slots (3) are symmetrically arranged on both sides of the adjusting column (7), so that the two tool handles (4) are symmetrically arranged on both sides of the adjusting column (7), the inner surfaces of the two tool handles (4) face the adjusting column (7), and the inner surfaces of the two tool handles (4) are provided with thread structures (8) that cooperate with the outer surfaces of the adjusting column (7). When the adjusting column (7) rotates forward and reversely, the thread structures (8) are used to lift the two tool handles (4) in the two tool slots (3), and the two tool handles (4) lift the two tool heads (5); A step (9) is provided at the connection between the top ends of the two knife heads (5) and the bottom ends of the knife handle (4); a step ring (10) is provided in the knife cavity (2); the step (9) faces the bottom surface of the step ring (10); a spring (11) is filled in the knife cavity (2); the bottom end of the spring (11) elastically contacts the step (9); the top end of the spring (11) elastically contacts the bottom surface of the step ring (10); when the knife head (5) rises, the step (9) is used to apply force to the bottom end of the spring (11), and the spring (11) is pushed upward to be compressed and shortened; when the knife head (5) descends, the thrust acting from the bottom end on the spring (11) gradually decreases, and the spring (11) is elastically stretched downward; First through holes (12) are provided on both sides of the bottom end of the blade body (1), and the first through holes (12) on both sides are symmetrically located on both sides of the spring (11). When the spring (11) is compressed and shortened, its pitch is gradually compressed and reduced relative to the inner side of the first through hole (12).

2. A brazed manganese steel tool according to claim 1, characterized in that: The bottom end of the tool body (1) is provided with a tapered portion (13) which tapers downward gradually, and the bottom end of the tool slot (3) is connected upwardly to the tool cavity (2) by the tapered surface of the tapered portion (13), so that the tapered surface of the tapered portion (13) forms an outer region surface (20) and an inner region surface (21) located on both sides of the tool slot (3), and the outer region surface (20) is higher than the inner region surface (21). The bottom end of the tool head (5) is provided with a cutting portion (14) which expands in the outer diameter direction, and the top end of the cutting portion (14) is located at the bottom of the outer region surface (20), and a height difference gap (15) is formed between the cutting portion (14) and the bottom of the outer region surface (20).

3. A brazed manganese steel tool according to claim 2, characterized in that: The first through holes (12) on the same side are at least two locations, one at the top and one at the bottom, and the first through hole (12) on the bottom side is close to being above the step (9).

4. A brazed manganese steel tool according to claim 3, characterized in that: A second through hole (16) is formed at the bottom end of the conical portion (13), the top end of the second through hole (16) is communicated with the knife cavity (2), the top end of the second through hole (16) is also communicated with the inside of the spring (11), and the top end of the second through hole (16) is also communicated with the inside and outside of the first through holes (12) on both sides; A conical transition portion (17) is provided at the connection between the top end of the second through hole (16) and the knife cavity (2), and the conical transition portion (17) gradually becomes thinner toward the second through hole (16).

5. A brazed manganese steel tool according to claim 4, characterized in that: A thin rod (18) is provided at the bottom end of the adjusting column (7), and the thin rod (18) is assembled on the bearing (6).

6. A brazed manganese steel tool according to claim 5, characterized in that: The bearing (6) is fixed above the step ring (10), and the bottom surface of the bearing (6) is limited to the top surface of the step ring (10).

7. A brazed manganese steel tool according to claim 6, characterized in that: The inner side surface of the knife handle (4) is provided with an arc surface (19), the knife cavity (2) is a circular hole, and the arc surface (19) on the inner side surface of the knife handle (4) and the circular inner surface of the knife cavity (2) coincide with each other on the same circumference; The outer surface of the spring (11) smoothly contacts the arc surface (19) of the knife handle (4), and the outer surface of the spring (11) smoothly contacts the circular inner surface of the knife cavity (2).

8. A brazed manganese steel tool according to claim 7, characterized in that: A hexagonal hole (22) is provided downwardly from the top end of the adjusting column (7), and a tapered surface (23) is provided on the outer peripheral surface of the knife body (1).

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