A processing device for spiral grooves on the inner wall of a deep-hole cylinder

Abstract

A kind of processing device of spiral groove in deep hole barrel inner wall, including the barrel connecting seat that can position machine cylinder and can drive machine cylinder rotation, the cutter head that can process spiral groove on machine cylinder inner wall, the cooling mechanism that can cool cutter head, the cutter body that can position cutter head, the cutter body connecting seat that can position cutter body and can drive cutter body to extend into and exit machine cylinder inner cavity, be provided with the insertion hole that can insert cutter head on the outer wall of the cutter body, the middle part of the cutter body is passed and can adjust the adjusting portion of cutter head height that extends the outer wall of cutter body, the adjusting portion is connected with adjusting portion drive mechanism, and the adjusting portion drive mechanism is arranged on cutter body connecting seat.The advantages of the present application are that it can be applied to long machine cylinder spiral inner hole milling;Cutter head can be controlled by adjusting portion in cutter body, relative to cutter body extension and contraction, when milling, the groove milled can be from deep to shallow, and the spiral groove with depth variation is easily processed.

Description

Technical Field

[0001] This invention relates to the field of spiral groove processing technology for the inner wall of a machine barrel, and more particularly to a processing device for spiral grooves on the inner wall of a deep-hole cylinder. Background Technology

[0002] A Chinese invention patent application with application number CN201911156182.0 entitled "CNC Milling Machine for Milling Grooves in the Inner Hole of a Barrel" discloses a CNC milling machine for milling grooves in the inner hole of a barrel. The machine includes a base, a milling cutter, a milling cutter holder, and a clamping mechanism. A driver is mounted on the milling cutter holder. A first driving unit drives the milling cutter holder to move back and forth. The clamping unit can automatically rotate the barrel or keep the barrel stationary. The bottom of the clamping mechanism is mounted on the base and can move laterally perpendicular to the direction of the milling cutter's movement. A second driving unit drives the clamping mechanism to move laterally. A support seat is fixed on the base between the clamping mechanism and the milling cutter holder to keep the milling cutter from deviating from its moving position. The driver, the first driving unit, the second driving unit, and the clamping unit are connected to the CNC circuit in a CNC system via wiring. The advantages of this invention are: it can mill a through-hole groove on the inner wall of the barrel; the cutter head is easy to replace after wear; it can machine a spiral groove in the barrel; and it can change the milling depth of the cutter head on the inner wall of the barrel. However, this CNC milling machine requires a transmission mechanism to move the barrel fixing seat when changing the milling depth, which is inefficient. If depth variation is to be achieved when machining spiral grooves, the CNC system needs to accurately control the forward and backward movement speed of the cutter head, the movement speed of the barrel fixing seat, and the rotation speed of the turntable of the barrel fixing seat, which is very difficult to achieve. Therefore, the structure of this milling machine needs further improvement. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a processing device for spiral grooves on the inner wall of a deep hole cylinder that has high spiral groove milling efficiency and can easily realize the variation of spiral groove depth, in view of the above-mentioned existing technology.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the processing device for spiral grooves on the inner wall of the deep hole cylinder includes a cylinder connecting seat that can position the cylinder and drive the cylinder to rotate, a cutting head that can process spiral grooves on the inner wall of the cylinder, a cooling mechanism that can cool the cutting head, a cutting body that can position the cutting head, and a cutting body connecting seat that can position the cutting body and drive the cutting body to extend into and out of the inner cavity of the cylinder. The device is characterized in that: an insertion hole for inserting the cutting head is provided on the outer wall of the cutting body, and an adjustment part that can adjust the height of the cutting head extending out of the outer wall of the cutting body is provided in the middle of the cutting body. The adjustment part is connected to the adjustment part driving mechanism, and the adjustment part driving mechanism is provided on the cutting body connecting seat.

[0005] As an improvement, the adjustment part may preferably include a tapered adjustment head and an adjustment rod. The bottom of the cutter head extends out of the insertion hole and touches the tapered adjustment head. The tapered adjustment head is connected to the adjustment rod, and the adjustment rod is connected to the adjustment part drive mechanism. The adjustment part drive mechanism drives the adjustment rod to move back and forth relative to the cutter body. When the adjustment rod moves forward, the top of the cutter head extends out of the cutter body. When the adjustment rod moves in the reverse direction, the cutter head retracts towards the axis of the cutter body.

[0006] In a further improvement, the cutter head can preferably be detachably connected to a cutter head connector, the cutter head connector being inserted into a socket, and the bottom of the cutter head connector contacting the conical adjusting head.

[0007] In a further improvement, the adjusting rod can preferably be a hollow rod body, with a coolant channel provided in the middle of the adjusting rod, the coolant channel being connected to a coolant source, a through hole connected to the coolant channel being provided on the outer wall of the conical adjusting head, and an oil passage being provided on the outer wall of the cutter body, connecting the inner cavity of the cutter body, the coolant channel, and the outside of the cutter body.

[0008] In a further improvement, the blade body may preferably include a front section, a blade cover, and a rear section, with the blade cover covering the end of the front section, the front section being connected to the rear section, and the oil passage being located at the tail end of the front section.

[0009] In a further improvement, the front end of the rear section may preferably be provided with a rear section limiting groove, and a sealing sleeve is inserted into the rear section limiting groove, the sealing sleeve being movably fitted onto the tail of the conical adjusting head.

[0010] As an improvement, the tool body connecting seat may preferably include a tool body positioning frame and a first lead screw transmission mechanism. The tool body positioning frame is connected to the transmission block of the first lead screw transmission mechanism. A positioning flange is provided on the outer wall of the tool body. The tool body is inserted into the tool body positioning frame and fixed to the tool body positioning frame through the positioning flange.

[0011] In a further improvement, the adjustment section drive mechanism may preferably include an adjustment section positioning frame and a second lead screw transmission mechanism. The second lead screw transmission mechanism is connected to the tool body positioning frame, and the transmission block of the second lead screw transmission mechanism is connected to the adjustment section positioning frame. The adjustment section positioning frame is connected to the adjustment section.

[0012] A further improvement is that a barrel limiting bracket can preferably be provided on the first lead screw drive mechanism near the end of the barrel.

[0013] As a further improvement, a cutter body limiting bracket can preferably be provided on the first lead screw transmission mechanism near the end of the barrel.

[0014] Compared with existing technologies, the advantages of this invention are as follows: When milling the inner hole, the cutter body gradually extends outwards to the outside of the barrel, thus enabling precise milling of helical grooves of a set length even on long barrels. Therefore, it can be applied to milling grooves in the helical inner holes of long barrels. The cutter head can be controlled by an adjustment part in the cutter body, extending and retracting relative to the cutter body. During milling, the milled groove can gradually decrease in depth, easily achieving the machining of helical grooves with varying depths. In summary, this machining device has a very ingenious structural design, achieving the machining of helical grooves with varying depths using a simple structure. It boasts high machining efficiency, a wide range of applications, and excellent application results. Attached Figure Description

[0015] Figure 1 This is a perspective view of an embodiment of the present invention in the barrel machining state; Figure 2 for Figure 1 Exploded structural diagram; Figure 3 yes Figure 2 Further structural decomposition diagram; Figure 4 This is a structural schematic diagram of an embodiment of the present invention; Figure 5 yes Figure 1 Cross-sectional schematic diagram of the connection structure between the cutter body and the cutter head; Figure 6 yes Figure 3 Enlarged view of section I. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0017] like Figures 1 to 6 As shown, the processing device for spiral grooves on the inner wall of a deep-hole cylinder in this embodiment includes a cylinder connecting seat 2 that can position the cylinder 3 and drive the cylinder 3 to rotate, a cutting head 4 that can process spiral grooves on the inner wall of the cylinder, a cooling mechanism 5 that can cool the cutting head 4, a cutting body 6 that can position the cutting head 4, and a cutting body connecting seat 7 that can position the cutting body 6 and drive the cutting body 6 to extend into and out of the inner cavity of the cylinder. An insertion hole 610 for inserting the cutting head 4 is provided on the outer wall of the cutting body 6. An adjustment part 8 that can adjust the height of the cutting head 4 extending out of the outer wall of the cutting body 6 is provided in the middle of the cutting body 6. The adjustment part 8 is connected to the adjustment part driving mechanism 9, and the adjustment part driving mechanism 9 is provided on the cutting body connecting seat 7.

[0018] The adjusting part 8 includes a tapered adjusting head 81 and an adjusting rod 82. The bottom of the cutter head 4 extends out of the insertion hole 610 and abuts against the tapered adjusting head 81. The tapered adjusting head 81 is connected to the adjusting rod 82, which is connected to the adjusting part drive mechanism 9. The adjusting part drive mechanism 9 drives the adjusting rod 82 to move back and forth relative to the cutter body 6. When the adjusting rod 82 moves forward, the top of the cutter head 4 extends out of the cutter body 6. When the adjusting rod 82 moves in the reverse direction, the cutter head 4 retracts towards the axis of the cutter body 6. The cutter head 4 is detachably connected to the cutter head connecting seat 41, which is inserted into the insertion hole 610. The bottom of the cutter head connecting seat 41 abuts against the tapered adjusting head 81.

[0019] The adjusting rod 82 is a hollow rod body. A coolant channel 51 is provided in the middle of the adjusting rod 82. The coolant channel 51 is connected to the coolant source 52 via a pipe. A through hole connecting the coolant channel 51 is provided on the outer wall of the conical adjusting head 81. An oil passage 611 connecting the inner cavity of the cutter body 6, the coolant channel 51, and the outside of the cutter body is provided on the outer wall of the cutter body. Coolant enters the inner cavity of the cutter body from the coolant channel 51 through the through hole of the conical adjusting head 81 and is sprayed out from the oil passage 611, cooling the cutter head 4. The coolant sprayed out of the cutter body 4 can pass through the barrel connecting seat 2 along the inner cavity of the barrel and be collected in the recovery tank 53 via the collection pipe 531. A scrap filter screen is provided at the top of the recovery tank 53. The specific connection structure and sealing structure between the collection pipe 531 and the barrel connecting seat 2 are known technologies and will not be described further.

[0020] The blade body 6 includes a front section 61, a blade cover 60, and a rear section 62. The blade cover 60 covers the end of the front section 61, and the front section 61 is connected to the rear section 62. An oil passage hole 611 is provided at the tail end of the front section 61. The front end of the rear section 62 is provided with a rear section limiting groove, and a sealing sleeve 63 is inserted into the rear section limiting groove. The sealing sleeve 63 is movably fitted onto the tail end of the conical adjusting head 81.

[0021] The cutter body connecting seat 7 includes a cutter body positioning frame 71 and a first lead screw transmission mechanism 72. The cutter body positioning frame 71 is connected to the transmission block of the first lead screw transmission mechanism 72. A positioning flange 64 is provided on the outer wall of the cutter body 6. The cutter body 6 is inserted into the cutter body positioning frame 71 and fixed to the cutter body positioning frame 71 through the positioning flange 64. The first lead screw transmission mechanism 72 is connected to the frame 1. The barrel connecting seat 2 is also connected to the frame 1. A chuck 21 is provided on the barrel connecting seat 2, and the jaws of the chuck 21 clamp one end of the barrel 3. A gearbox and a chuck rotation drive motor are provided inside the barrel connecting seat 2. The chuck rotation drive motor is connected to a programmable controller via wiring. The first lead screw transmission mechanism 72 includes a first transmission block, a first lead screw, a first limit rod, a first lead screw seat, and a first lead screw transmission motor. The first lead screw transmission motor is connected to a programmable controller via a circuit. The programmable controller controls the first lead screw transmission motor to drive the tool body positioning frame 71 to move. The specific structure of the chuck 21, the specific structure of the first lead screw transmission mechanism 72, and the control circuit of the programmable controller are existing technologies and will not be described in detail here.

[0022] The adjustment unit drive mechanism 9 includes an adjustment unit positioning frame 91 and a second lead screw transmission mechanism 92. The second lead screw transmission mechanism 92 is connected to the tool body positioning frame 71. The transmission block of the second lead screw transmission mechanism 92 is connected to the adjustment unit positioning frame 91, and the adjustment unit positioning frame 91 is connected to the adjustment unit. The second lead screw transmission mechanism 92 includes a second transmission block, a second lead screw, a second limit rod, a second lead screw seat, and a second lead screw transmission motor. The second lead screw transmission motor is connected to a programmable controller via wiring. The programmable controller controls the second lead screw transmission motor to drive the adjustment rod 82 to move. The specific structure of the second lead screw transmission mechanism 92 and the control circuit of the programmable controller are existing technologies and will not be described in detail. The first lead screw transmission mechanism 72 and the second lead screw transmission mechanism 92 can share a single programmable controller.

[0023] A barrel limiting bracket 721 is provided on the first lead screw drive mechanism 72 near the end of the barrel. The barrel limiting bracket 721 is equipped with a rolling bearing; its specific structure is prior art and will not be described further. A cutter body limiting bracket 722 is also provided on the first lead screw drive mechanism 72 near the end of the barrel. The cutter body limiting bracket 722 is equipped with a sliding bearing; its specific structure is prior art and will not be described further.

Claims

1. A processing device for spiral grooves on the inner wall of a deep-hole cylinder, comprising a cylinder connecting seat (2) capable of positioning the cylinder (3) and driving the cylinder (3) to rotate, a cutting head (4) capable of processing spiral grooves on the inner wall of the cylinder, a cooling mechanism (5) capable of cooling the cutting head (4), a cutting body (6) capable of positioning the cutting head (4), and a cutting body connecting seat (7) capable of positioning the cutting body (6) and driving the cutting body (6) to extend into and retract from the inner cavity of the cylinder, characterized in that: An insertion hole (610) for inserting a cutting head (4) is provided on the outer wall of the blade body (6). An adjustment part (8) for adjusting the height of the cutting head (4) extending out of the outer wall of the blade body (6) is provided in the middle of the blade body (6). The adjustment part (8) is connected to the adjustment part drive mechanism (9). The adjustment part drive mechanism (9) is provided on the blade body connecting seat (7).

2. The processing apparatus according to claim 1, characterized in that: The adjustment part (8) includes a conical adjustment head (81) and an adjustment rod (82). The bottom of the cutter head (4) extends out of the insertion hole (610) and touches the conical adjustment head (81). The conical adjustment head (81) is connected to the adjustment rod (82). The adjustment rod (82) is connected to the adjustment part drive mechanism (9). The adjustment part drive mechanism (9) drives the adjustment rod (82) to move back and forth relative to the cutter body (6). When the adjustment rod (82) moves forward, the top of the cutter head (4) extends out of the cutter body (6). When the adjustment rod (82) moves in the opposite direction, the cutter head (4) retracts towards the axis of the cutter body (6).

3. The processing apparatus according to claim 2, characterized in that: The cutting head (4) is detachably connected to the cutting head connector (41), which is inserted into the socket (610), and the bottom of the cutting head connector (41) is in contact with the conical adjusting head (81).

4. The processing apparatus according to claim 3, characterized in that: The adjusting rod (82) is a hollow rod body. A coolant channel (51) is provided in the middle of the adjusting rod (82). The coolant channel (51) is connected to the coolant source (52). A through hole connecting the coolant channel (51) is provided on the outer wall of the conical adjusting head (81). An oil passage (611) connecting the inner cavity of the cutter body (6) and the coolant channel (51) and the outside of the cutter body is provided on the outer wall of the cutter body.

5. The processing apparatus according to claim 4, characterized in that: The blade (6) includes a front section (61), a blade cover (60), and a rear section (62). The blade cover (60) covers the end of the front section (61). The front section (61) is connected to the rear section (62). The oil passage (611) is located at the tail end of the front section (61).

6. The processing apparatus according to claim 5, characterized in that: The rear section (62) has a rear section limiting groove at its front end, and a sealing sleeve (63) is inserted into the rear section limiting groove. The sealing sleeve (63) is movably fitted onto the tail of the conical adjusting head (81).

7. The processing apparatus according to any one of claims 1 to 6, characterized in that: The blade connecting seat (7) includes a blade positioning frame (71) and a first lead screw transmission mechanism (72). The blade positioning frame (71) is connected to the transmission block of the first lead screw transmission mechanism (72). A positioning flange (64) is provided on the outer wall of the blade (6). The blade (6) is inserted into the blade positioning frame (71) and fixed to the blade positioning frame (71) through the positioning flange (64).

8. The processing apparatus according to claim 7, characterized in that: The adjustment section drive mechanism (9) includes an adjustment section positioning frame (91) and a second lead screw transmission mechanism (92). The second lead screw transmission mechanism (92) is connected to the tool body positioning frame (71). The transmission block of the second lead screw transmission mechanism (92) is connected to the adjustment section positioning frame (91). The adjustment section positioning frame (91) is connected to the adjustment section.

9. The processing apparatus according to claim 7, characterized in that: A barrel limiting bracket (721) is provided on the first lead screw drive mechanism (72) near the end of the barrel.

10. The processing apparatus according to claim 7, characterized in that: A cutter body limiting bracket (722) is provided on the first lead screw drive mechanism (72) near the end of the barrel.

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