Hole machining boring cutter

Abstract

The utility model discloses a hole processing boring cutter, which relates to the field of boring cutters, and comprises a cutter bar and a cutter handle which are axially aligned and connected, the cutter handle and the cutter bar are internally provided with liquid channels, the end part of the cutter bar is provided with a cutter groove, a blade is arranged on one side of the cutter groove, and the other side of the cutter groove is provided with liquid holes penetrating through the liquid channels; cooling liquid is conducted to the working end of the cutter bar through the built-in liquid channel, the cooling liquid is directly sprayed to the blade through the liquid hole, the blade is rapidly cooled, the machining quality is improved, the service life of the blade is prolonged, and the utilization rate of the cooling liquid is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to boring bar field especially relates to a hole processing boring bar. BACKGROUND

[0002] PCD boring bar is made of polycrystalline diamond boring bar tool, can precision machining hole structure, in the high -speed boring process, the temperature of blade part is sharply increased, to improve the processing quality, prolong the service life of blade needs to carry out the cooling of blade, the traditional method is to spray cooling liquid to the tool through external pipeline, but the boring bar is deeply into the gap between the hole body and the hole is narrow, the efficiency of cooling liquid to reach the blade part is low, and the cooling effect is poor. SUMMARY

[0003] The utility model discloses a kind of hole processing boring bars, solve the problem that traditional external spray cooling liquid method is not easy to reach the blade position deeply into hole, cause poor cooling effect.

[0004] To solve the problems in the prior art, the technical scheme of the utility model is as follows:

[0005] A kind of hole processing boring bar, including the axial alignment connection of tool shank and tool handle, tool handle and tool shank inside are set up liquid channel, tool shank end is set up tool slot, blade is arranged in tool slot one side, tool slot other side has the liquid hole of through liquid channel, located tool handle position sets up liquid guide device and conduction cooling liquid in liquid channel.

[0006] Preferably, the liquid guide device includes a ring sleeve, which is rotatably disposed on the surface of the tool handle. A closed annular cavity is formed between the ring sleeve and the tool handle. A through hole is formed on the surface of the tool handle, which penetrates the annular cavity and the liquid channel. A pipeline is connected to the surface of the ring sleeve.

[0007] Preferably, the side of the tool slot away from the blade is inclined towards the edge of the tool shank, so that the liquid hole points to the blade edge.

[0008] Preferably, a chip removal groove is formed on the surface of the tool shank. One end of the chip removal groove is connected to the tool slot, and the other end of the chip removal groove extends towards the tool handle.

[0009] Preferably, the chip removal groove extends in a reverse spiral direction from the tool slot to the end of the tool shank.

[0010] Preferably, the end of the tool shank away from the tool slot has a circular truncated cone portion, and the end of the chip removal groove is connected to the inclined surface of the circular truncated cone portion.

[0011] Preferably, an embedding groove is formed on the end of the tool shank away from the tool slot. The tool handle is axially inserted into the embedding groove. The surface of the tool shank is radially inserted into the screw thread to connect the tool handle, so that the tool handle and the tool shank are fixedly connected.

[0012] Preferably, the surface of the tool handle has an enlarged diameter portion, and the ring sleeve is arranged between the enlarged diameter portion and the end surface of the tool shank.

[0013] Compared with the related art, the utility model has the advantages of the following:

[0014] 1、The utility model discloses a built-in liquid channel conduction cooling liquid to the working end of the tool bar, and the liquid hole is directly sprayed to the blade through the liquid hole, is used for the rapid blade cooling, improves the processing quality, prolongs the service life of the blade, and the utilization rate of the cooling liquid is also relatively high.

[0015] 2、The utility model discloses a spiral chip removal groove discharges the chip, and the cooling liquid also has the effect of auxiliary chip removal in the process of discharging from the chip removal groove hole, avoids the influence of the chip accumulation on hole processing. DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model.

[0017] Figure 2 It is the whole sectional structure schematic diagram of the utility model.

[0018] Figure 3 It is the liquid hole structure schematic diagram of the utility model.

[0019] The drawing mark: 1, tool bar;2, tool handle;3, ring cover;4, tool groove;5, blade;6, chip removal groove;7, liquid hole;8, liquid channel;81, through -hole;9, circular platform part. SPECIFIC IMPLEMENTATION

[0020] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following combines the drawing and example, and further detailedly explains the utility model.

[0021] Hole processing boring cutter has tool bar 1, tool handle 2, blade 5, liquid guide device four parts;

[0022] As Figure 1 , Figure 3 Shown, tool handle 2 axial alignment is connected at the rear end of tool bar 1, and the liquid channel 8 is extended in the axial direction in the internal center position of tool bar 1 and tool handle 2, and one or two tool grooves 4 are evenly arranged at the edge position of the front end of tool bar 1, and the blade 5 is fixed at the rotation opposite side of tool groove 4, and the liquid hole 7 of liquid channel 8 is set at the other side of tool groove 4, and the side of tool groove 4 away from blade 5 is inclined to the edge of tool bar 1, so that the liquid hole 7 points to the blade part of the edge of blade 5;

[0023] As Figure 2 Shown, liquid guide device includes ring cover 3, and ring cover 3 is rotatably installed on the surface of tool handle 2 through bearing and sealing ring, so that the closed annular cavity is formed between ring cover 3 and tool handle 2, and the through -hole 81 of liquid channel 8 is set on the surface of tool handle 2, and the annular cavity is communicated with ring cover 3 through hose;

[0024] The shank 2 is connected with a rotary driving device, and a hose is connected with a cooling liquid providing device, the driving device drives the shank 2 to rotate the cutter bar 1, the cutter blade 5 is used to perform fine cutting on the inner wall of the hole, and the cooling liquid is guided into the annular cavity through the hose, the cooling liquid is guided into the liquid channel 8 through the through hole 81, the cooling liquid is guided to the front end of the cutter bar 1, and the cooling liquid is directly sprayed to the cutter blade 5 through the liquid hole 7, so that the cutter blade 5 is rapidly cooled.

[0025] As shown in Figure 1 , a chip removal groove 6 is arranged on the surface of the cutter bar 1, one end of the chip removal groove 6 is connected with the cutter groove 4, and the other end of the chip removal groove 6 spirally extends to the shank 2 in the reverse direction of the rotation of the cutter bar 1, the cutting chips generated by the cutter blade 5 are discharged through the chip removal groove 6, and most of the cooling liquid is discharged from the hole along the chip removal groove 6 after the cooling liquid sprayed to the cutter blade 5 fills the entire cutter groove 4, the cooling liquid conducted along the chip removal groove 6 has the effect of assisting in discharging the cutting chips, and the accumulation of the cutting chips in the processed hole is avoided.

[0026] As shown in Figure 1 , a circular table part 9 is arranged at the end of the cutter bar 1 away from the cutter groove 4, and the end of the chip removal groove 6 is connected with the inclined surface of the circular table part 9, so that the discharged cooling liquid and cutting chips are diffused outward along the inclined surface of the circular table part 9, and the cutting chips are prevented from winding around the cutting tool.

[0027] As shown in Figure 2 , the cutter bar 1 is movably connected with the shank 2, an embedding groove is arranged at the end of the cutter bar 1 away from the cutter groove 4, the shank 2 is axially inserted into the embedding groove, the surface of the cutter bar 1 is radially inserted into the screw thread to connect the shank 2, so that the shank 2 is fixed with the cutter bar 1, the cutter bar 1 and the shank 2 are separated by disassembling the screw, and the liquid channel 8 inside is conveniently processed.

[0028] As shown in Figure 2 , the surface of the shank 2 has a diameter expansion part, and the ring sleeve 3 is arranged between the diameter expansion part and the end surface of the cutter bar 1, so that the ring sleeve 3 has a stable axial installation position.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A hole processing boring tool, characterized by The tool bar (1) and the tool handle (2) are connected in axial alignment, the tool handle (2) and the tool bar (1) are internally provided with a liquid channel (8), the tool bar (1) is provided with a tool slot (4) at the end, the tool blade (5) is arranged at one side of the tool slot (4), the other side of the tool slot (4) is provided with a liquid hole (7) penetrating the liquid channel (8), and the liquid guide device is arranged at the tool handle (2) to conduct the cooling liquid into the liquid channel (8). The liquid guide device comprises a ring sleeve (3) which is rotatably arranged on the surface of the tool handle (2), a closed annular cavity is formed between the ring sleeve (3) and the tool handle (2), the surface of the tool handle (2) is provided with a through hole (81) penetrating the annular cavity and the liquid channel (8), and the surface of the ring sleeve (3) is connected with a pipeline.

2. The bore machining boring tool according to claim 1, characterized in that The side of the tool slot (4) away from the tool blade (5) is inclined to the edge of the tool bar (1), so that the liquid hole (7) points to the edge part of the tool blade (5).

3. The bore machining boring head according to claim 1, characterized in that The surface of the tool bar (1) is provided with a chip removal groove (6), one end of the chip removal groove (6) is connected with the tool slot (4), and the other end of the chip removal groove (6) extends to the direction of the tool handle (2).

4. The bore machining boring head according to claim 3, characterized in that The chip removal groove (6) extends to the reverse spiral of the tool bar (1) from one end of the tool slot (4) to the tool handle (2).

5. The bore machining boring tool according to claim 3, characterized in that The end of the tool bar (1) away from the tool slot (4) is provided with a circular truncated cone part (9), and the end of the chip removal groove (6) is connected with the inclined surface of the circular truncated cone part (9).

6. The bore machining boring head of claim 1, wherein, The end of the tool bar (1) away from the tool slot (4) is provided with an embedding groove, the tool handle (2) is axially inserted into the embedding groove, the surface of the tool bar (1) is radially inserted into the screw thread to connect the tool handle (2), so that the tool handle (2) is fixedly connected with the tool bar (1).

7. The bore machining boring head according to claim 6, characterized in that The surface of the tool handle (2) is provided with an expanded diameter part, and the ring sleeve (3) is arranged between the expanded diameter part and the end surface of the tool bar (1).

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