Slotting head

Abstract

The utility model relates to the technical field of machine tool machining, in particular to a slotting head which comprises a cutter handle body shaft, a box body and a slotting cutter rod shaft, the cutter handle body shaft is installed on the end face of a machine tool spindle unit, a cutter handle bearing is installed on the outer surface of the cutter handle body shaft, and the cutter handle body shaft is connected into the box body through the cutter handle bearing. A cylindrical cam is fixedly connected to one end of the knife handle body shaft, a cam groove is formed in the knife handle body shaft, a knife inserting rod is detachably connected into the knife inserting rod shaft, a connecting shaft is fixedly connected to one end of the knife inserting rod, and a needle bearing is installed on the outer surface of the connecting shaft. The needle bearing moves in the cam groove of the cylindrical cam to drive the connecting shaft to move, the connecting shaft is connected with the needle bearing and the slotting tool rod shaft, the needle bearing transmits rotation motion and power of the cylindrical cam to the slotting tool rod shaft, and therefore the cylindrical cam is driven by the tool handle body shaft to rotate. The effect of changing rotary motion into reciprocating rectilinear motion is achieved through a cam groove of the cylindrical cam.

Description

Technical Field

[0001] This utility model relates to the technical field of machine tool processing, and in particular to planing heads. Background Technology

[0002] Some existing machining centers, CNC milling machines, and conventional milling machines cannot directly perform planing operations, necessitating the use of a planing device to complete these operations. This device is primarily used on machining centers, CNC milling machines, and conventional milling machines to perform planing operations, such as machining keyways in the inner holes of workpieces. Utility Model Content

[0003] In order to implement the planing process on machining centers, CNC milling machines and ordinary milling machines, this utility model provides a planing head.

[0004] The cutting head provided by this utility model adopts the following technical solution:

[0005] A planer head, mounted on the end face of a machine tool spindle unit, also includes a tool holder body shaft, a housing, and a planer bar shaft. A tool holder bearing is mounted on the outer surface of the tool holder body shaft, which is connected to the inside of the housing via the tool holder bearing. A cylindrical cam is fixedly connected to one end of the tool holder body shaft, and a cam groove is provided. A planer bar is detachably connected to the inside of the planer bar shaft, and a connecting shaft is fixedly connected to one end of the planer bar. A needle roller bearing is mounted on the outer surface of the connecting shaft, and the needle roller bearing is tactilely connected to the inside of the cam groove.

[0006] By adopting the above technical solution, the tool holder rotates under the drive of the main shaft, and the rotational motion is converted into reciprocating linear motion through its cam groove.

[0007] Preferably, the cam groove is a surrounding groove, including a high ring track and a low ring track. Both ends of the high ring track are fixedly connected to the two ends of the corresponding low ring track. The needle roller bearing rolls in turn inside the high ring track and the low ring track. The inside of the housing is provided with a motion track adapted to the connecting shaft, and the connecting shaft is slidably connected inside the housing.

[0008] By adopting the above technical solution, the high ring track and low ring track correspond to the movement distance of the cutter head driven by the cutter bar towards or away from the workpiece; the motion track is the upper and lower motion guide rail of the connecting shaft inside the box, and the motion track contains two different sides.

[0009] Preferably, an open linear bearing is fixedly connected inside the housing, and the outer surface of the insert rod shaft is engaged with the inside of the open linear bearing.

[0010] Preferably, the outer surface of the insert rod shaft near the insert rod is threaded with two internal hexagonal set screws, one end of which is fastened to the outer surface of the insert rod.

[0011] By adopting the above technical solution, the open linear bearing is fixed in the housing to support the reciprocating motion of the insert rod shaft; two internal hexagonal flat-end set screws lock the insert rod onto the insert rod shaft.

[0012] Preferably, the other end of the insert rod is movably connected to an insert head, and the other end of the insert rod is threaded with a flat-head screw that passes through the insert head.

[0013] By adopting the above technical solution, the cutting head is fixed on the cutting rod with a flat-head screw, and then when the shaft of the tool holder rotates, the cutting head performs linear reciprocating machining on the workpiece to be processed.

[0014] Preferably, a thrust bearing is installed on the outer surface of the tool holder body shaft, and two ball bearings, one and two, are installed on the outer surface of the tool holder body shaft. The thrust bearing is located between ball bearings one and two. A positioning and fixing plate is also installed on the end face of the machine tool spindle unit. A positioning seat and a fixing pin are also installed on the outer surface of the housing. The positioning and fixing plate is fastened to the end face of the machine tool spindle unit and supports the positioning seat. The fixing pin is inserted into the tapered hole of the positioning seat.

[0015] By adopting the above technical solution, the thrust bearing axially supports and bears the axial force generated by the self-weight of the support sleeve, housing and other components, as well as the axial force generated by the retraction of the tool, through the fixed cylindrical cam end face.

[0016] In summary, this utility model has the following beneficial technical effects:

[0017] 1. This device is equipped with a cylindrical cam, a needle roller bearing, and a connecting shaft. The needle roller bearing moves within the cam groove of the cylindrical cam, driving the connecting shaft to move. The connecting shaft connects the needle roller bearing to the tool holder shaft. The needle roller bearing transmits the rotational motion and power of the cylindrical cam to the tool holder shaft, which then rotates under the drive of the tool holder body shaft. The cam groove of the cylindrical cam converts the rotational motion into reciprocating linear motion, increasing the ability of the tool holder head to complete the tool holder cutting process. It can be used in machining centers, CNC milling machines, and ordinary milling machines to perform tool holder cutting processes, such as machining keyways in the inner holes of workpieces.

[0018] 2. This device is equipped with a positioning seat, which fastens the positioning plate to the end face of the machine tool spindle unit and supports the positioning seat. The fixing pin conical shaft enters the conical hole of the positioning seat to prevent the fixing frame, housing and other components from rotating with the tool holder body shaft. At the same time, when machining centers, CNC milling machines and ordinary milling machines are performing machining, they need to change tools from time to time to complete the machining of the workpiece. The positioning seat, positioning pin and other components cooperate. When the machine tool robot arm changes tools, the positioning key of the machine tool robot arm's tool claw is engaged in the groove of the tool holder body shaft, so that the direction of the tool is consistent every time the tool is changed. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the cutting head of this utility model;

[0020] Figure 2 This is a top view of the cutting head of this utility model;

[0021] Figure 3 yes Figure 2 View A in the middle;

[0022] Figure 4 yes Figure 2 A sectional view along the EE line;

[0023] Figure 5 yes Figure 2 A cross-sectional view along the CC line;

[0024] Figure 6 yes Figure 4 Sectional view along line BB;

[0025] Figure 7 This is a front view of the cylindrical cam in the cutting head of this utility model;

[0026] Figure 8 This is a side view of the cylindrical cam in the cutting head of this utility model.

[0027] Explanation of reference numerals in the attached diagram: 1. Tool holder body shaft; 2. One hex socket set screw; 3. Anti-rotation ring; 4. Single-lip skeleton seal ring; 5. One hex socket head cap screw; 6. Support sleeve end cap; 7. One ball bearing; 8. Thrust bearing washer; 9. Two hex socket set screws; 10. Scale ring; 11. One hex socket set screw; 12. Baffle; 13. One hex socket countersunk screw; 14. Connecting shaft; 15. Needle roller bearing; 16. Cylindrical cam; 17. One ordinary flat key; 18. Open linear bearing; 19. Spacer washer; 20. Two ball bearings; 21. Type A elastic retaining ring for holes; 22. O-ring; 23. Three hex socket set screws; 24. Tool holder shank; 25. Tool holder head; 26. Flat head screw; 27. Anti-rotation pin; 28. Adjusting screw. 29. Mother; 30. Four socket head cap set screws; 31. Compression spring; 32. Fixing pin; 33. Anti-rotation pin sleeve; 34. Fixing seat; 35. Five socket head cap set screws; 36. Fixing bracket; 37. Thrust bearing; 38. Support sleeve; 39. Two ordinary flat keys; 40. Two socket head cap screws; 41. Housing; 42. Locking nut; 43. Housing end cover; 44. Tool holder shaft; 45. One cylindrical pin; 46. Fixing screw; 47. Three socket head cap screws; 48. Six socket head cap set screws; 49. Grease nipple; 50. Four socket head cap screws; 51. Five socket head cap screws; 52. Anti-rotation pin baffle; 53. Two cylindrical pins; 54. Positioning fixing plate; 55. Six socket head cap screws; 56. Positioning seat. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-8 The present invention will be described in further detail below.

[0029] This utility model discloses a cutting head.

[0030] Reference Figure 4 , Figure 7 , Figure 8 The assembly, mounted on the end face of the machine tool spindle unit, also includes a tool holder body shaft 1, a housing 40, and a tool holder shaft 43. The tool holder body shaft 1 is connected to the machine tool power source and serves as the power input, driving the cylindrical cam 16 to rotate. A tool holder bearing is mounted on the outer surface of the tool holder body shaft 1, and the tool holder body shaft is connected to the inside of the housing 40 through the tool holder bearing. A cylindrical cam 16 is fixedly connected to one end of the tool holder body shaft 1, and the cylindrical cam 16 has a cam groove. A tool holder 24 is detachably connected to the inside of the tool holder shaft 43, and a connecting shaft 14 is fixedly connected to one end of the tool holder 24. A needle roller bearing 15 is mounted on the outer surface of the connecting shaft 14, and the needle roller bearing 15 is tumblingly connected to the inside of the cam groove of the cylindrical cam 16. The cylindrical cam 16 rotates under the drive of the tool holder body shaft 1, and its cam groove converts the rotational motion into reciprocating linear motion.

[0031] Reference Figure 4 , Figure 7 , Figure 8 The cam groove is a surrounding groove, including a high ring track and a low ring track. Both ends of the high ring track are fixedly connected to the corresponding ends of the low ring track. In conjunction with the movement of the cutter head 25, the needle roller bearing 15 rolls inside the high ring track and the low ring track at different times. The housing 40 has a motion track adapted to the connecting shaft 14 inside. The connecting shaft 14 is slidably connected inside the housing 40. The motion track includes two surfaces, namely the upper and lower motion guide surfaces of the connecting shaft 14.

[0032] Reference Figure 4 , Figure 7 , Figure 8 An open linear bearing 18 is fixedly connected inside the housing 40, and the outer surface of the cutter bar shaft 43 is snapped into the inside of the open linear bearing 18.

[0033] Reference Figure 4 , Figure 7 , Figure 8 Two internal hexagonal set screws 23 are threaded on the outer surface of the end of the insert rod shaft 43 near the insert rod 24. One end of the two internal hexagonal set screws 23 is fastened to the outer surface of the insert rod 24.

[0034] Reference Figure 4 , Figure 7 , Figure 8 The other end of the tool inserter 24 is movably connected to a tool inserter head 25. The other end of the tool inserter 24 is threaded with a flat-head screw 26 that passes through the tool inserter head 25. The flat-head screw 26 is on the tool inserter 24 to fasten the tool inserter head 25. The tool inserter head 25 is fixed on the tool inserter 24 to process the workpiece, such as a keyway.

[0035] Reference Figure 4 , Figure 7 , Figure 8 A thrust bearing 36 is installed on the outer surface of the tool holder body shaft 1.

[0036] Reference Figure 4 , Figure 7 , Figure 8 Two ball bearings, 7 and 20, are mounted on the outer surface of the shaft 1 of the tool holder body, and the thrust bearing 36 is located between the ball bearings 7 and 20.

[0037] Reference Figure 5 A positioning and fixing plate 53 is also installed on the end face of the machine tool spindle unit, and a positioning seat 55 and a fixing pin 31 are also installed on the outer surface of the housing 40. The positioning and fixing plate 53 is fastened to the end face of the machine tool spindle unit and supports the positioning seat 55. The fixing pin 31 is inserted into the tapered hole of the positioning seat 55 by a tapered shaft.

[0038] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The interior of the housing 40 also includes: 1. Hex socket head cap set screw 1; 2. Anti-rotation ring 3. Single-lip skeleton seal ring 4. Hex socket head cap screw 1; 3. Support sleeve end cap 6. Ball bearing 1; 4. Thrust bearing washer 8. Hex socket head cap set screw 2; 5. Scale ring 10. Hex socket head cap tapered set screw 11. Baffle 12. Hex socket head cap countersunk screw 13. Connecting shaft 14. Needle roller bearing 15. Cylindrical cam 16. Ordinary flat key 17. Open linear bearing 18. Spacer washer 19. Ball bearing 20. Hole elastic retaining ring type A 21. O-ring 22. Hex socket head cap set screw 3 23. Tool holder 24. Tool holder head 25. Flat head screw 26. Anti-rotation pin 27. Adjusting nut 28. Internal 29. Hexagonal flat-end set screw 4, 30. Compression spring, 31. Fixing pin, 32. Anti-rotation pin sleeve, 33. Fixing seat, 34. Hexagonal flat-end set screw 5, 35. Fixing bracket, 36. Thrust bearing, 37. Support sleeve, 38. Ordinary flat key 2, 39. Hexagonal socket head cap screw 2, 40. Housing, 41. Locking nut, 42. Housing end cover, 43. Tool holder shaft, 44. Cylindrical pin 1, 45. Fixing screw, 46. Hexagonal socket head cap screw 3, 47. Hexagonal flat-end set screw 6, 48. Grease nipple, 49. Hexagonal socket head cap screw 4, 50. Hexagonal socket head cap screw 5, 51. Anti-rotation pin baffle, 52. Cylindrical pin 2, 53. Positioning fixing plate, 54. Hexagonal socket head cap screw 6, 55. Positioning seat and positioning pin;

[0039] The conical shaft of the fixing pin 31 enters the conical hole of the positioning seat 55 to prevent the fixing frame 35, the housing 40 and other components from rotating with the tool holder body shaft. The positioning seat 55, the positioning pin and other components cooperate to ensure that the tool direction is consistent during each tool change when the machine tool robot arm changes tools.

[0040] Secure the positioning seat 55 to the positioning fixing plate 53 using the internal hex socket head cap screws 54;

[0041] The positioning and fixing plate 53 is fastened to the end face of the machine tool spindle unit and supports the positioning seat 55;

[0042] The end cover 42 of the box body is positioned on the box body 40 by means of cylindrical pin 2 52;

[0043] The anti-rotation pin baffle 51 blocks the anti-rotation pin 27 in the groove of the fixing frame 35, and the anti-rotation pin baffle 51 is fastened to the fixing frame 35 by the internal hexagonal head screw 50.

[0044] Secure the mounting base 33 to the mounting bracket 35 using four hex socket head cap screws 49;

[0045] Use an oil gun to inject oil into the housing 40 through the grease nozzle 48;

[0046] Tightening the hex socket set screw 647 increases the clearance in the inner hole of the bracket 35, allowing the support sleeve 37 to rotate more flexibly and making it easier to adjust the angle.

[0047] After loosening the support sleeve 37 by the internal hex socket head cap screw 346, the components such as the fixing bracket, the box-type tool holder shaft 43, the tool holder 24, and the tool holder head 25 can be rotated to the angle required by the machining process.

[0048] After tightening the 46mm socket head cap screw, it will be locked in place.

[0049] The end cover 42 and the housing 40 are fastened to the support sleeve 37 by fixing screws 45, and the housing 40 is positioned on the support sleeve 37 by cylindrical pin 44. The inserting rod shaft 43 is connected to the shaft 14 in the open linear bearing 18, which drives the inserting rod 24 to move up and down in a linear motion.

[0050] The end cover 42 seals the housing 40 and supports the 22 O-rings. The locking nut 41 fastens the ball bearing 20, cylindrical cam 16 and other components on the shaft 1 of the tool holder body. The housing 40 is connected to the support sleeve 37 and supports the open linear bearing 18, ball bearing 20, housing end cover 42 and other accessories.

[0051] The socket head cap screw 39 secures the end cover 42 and the housing 40 to the support sleeve 37. The ordinary flat key 38 connects the cylindrical cam 16 to the shaft 1 of the tool holder body to transmit torque. The support sleeve 37 connects the housing 40 and supports the fixing frame 35, ball bearing 7, support sleeve end cover 6, thrust bearing 36 and other accessories.

[0052] The thrust bearing 36 is fixed on the end face of the cylindrical cam 16, axially supporting and bearing the axial force generated by the self-weight of the support sleeve 37, the housing 40 and other components, as well as the axial force generated by the tool retraction. The fixed bracket 35 is connected to the fixed seat 33. After being loosened by the internal hexagonal head screw 346, the support sleeve 37 can be rotated to the angle required by the machining process.

[0053] After tightening the socket head cap screw 346, lock it in place. After the fixing pin 31 is adjusted to the correct position, tighten the fixing pin 31 onto the fixing seat 33. The fixing seat 33 is connected to the fixing bracket 35 and supports the fixing pin 31, anti-rotation pin sleeve 32, compression spring 30 and other accessories.

[0054] The anti-rotation pin sleeve 32 carries the anti-rotation pin 27 and moves up and down, causing the anti-rotation pin 27 to disengage from or enter the R groove of the anti-rotation ring 3. The fixing pin 31 enters the tapered hole of the positioning seat 55 to prevent the fixing frame 35, the housing 40 and other components from rotating with the tool holder body shaft 1. The compression spring 30 forces the anti-rotation pin sleeve 32 to carry the anti-rotation pin 27 into the R groove of the anti-rotation ring 3.

[0055] The four internal hexagonal flat-end set screws 29 fix the adjusting nut 28 on the anti-rotation pin 32 sleeve. The adjusting nut 28 adjusts the height position of the anti-rotation pin sleeve 32. The anti-rotation pin 27 is disengaged from or enters the R groove of the anti-rotation ring 3 through the anti-rotation pin sleeve 32.

[0056] When the machine tool robotic arm is changing tools, when the robotic arm removes the planer head from the spindle unit, the anti-rotation pin 27 enters the R groove of the anti-rotation ring 3 to prevent the anti-rotation ring 3 from rotating. When the machine tool robotic arm is changing tools, when the robotic arm puts the planer head into the spindle unit, the anti-rotation pin 27 disengages from the R groove of the anti-rotation ring 3, and the tool holder body shaft 1 can rotate.

[0057] The anti-rotation ring 3 is locked onto the tool holder body shaft 1 by the internal hexagonal flat end set screw 2, thereby determining the phase relationship of the tool holder body shaft 1. The tool inserting rod 24 is fixed on the tool inserting rod shaft 43 and carries the tool inserting head 25.

[0058] The socket head cap set screw 23 secures the tool holder 24 to the tool holder shaft 43. The O-ring 22 prevents lubricating oil leakage and dust ingress. The type A elastic retaining ring 21 is used to axially fix the open linear bearing 18 on the housing 40. The ball bearing 20 supports the rotation of the tool holder body shaft 1 and bears radial force.

[0059] Spacer 19 axially fixes cylindrical cam 16 on tool holder body shaft 1, open linear bearing 18 is fixed in housing 40 to support the reciprocating motion of tool inserter shaft 43, and ordinary flat key 17 connects cylindrical cam 16 on tool holder body shaft 1 to transmit torque.

[0060] The needle roller bearing 15 moves in the cam groove of the cylindrical cam 16, driving the connecting shaft 14 to move. The connecting shaft 14 connects the needle roller bearing 15 and the tool holder shaft 43, and transmits the rotational motion and power of the cylindrical cam 16 to the tool holder shaft 43 through the needle roller bearing 15.

[0061] The internal hexagon countersunk screw 13 fastens the baffle 12 on the connecting shaft 14, the baffle 12 axially positions the needle roller bearing 15 on the connecting shaft 14, and the internal hexagon tapered set screw 11 positions and fastens the connecting shaft 14 on the tool holder shaft 43.

[0062] The scale ring 10 displays the angle scale value, and the hexagon socket set screw 29 fixes the scale ring 10 on the support sleeve 37;

[0063] The thrust bearing washer 8 supports the thrust bearing 36 and the axial fixed support sleeve 37, and the ball bearing 7 supports the rotation of the tool holder body shaft 1 and bears radial force.

[0064] Support sleeve end cap 6 axially fixed ball bearing 7, load-bearing single lip skeleton seal ring 4, internal hexagonal head screw 5 to fix support sleeve end cap 6 in support sleeve 37;

[0065] The single-lip skeleton seal ring 4 prevents lubricating oil leakage and dust entry. The anti-rotation ring 3 determines the phase relationship between the fixing pin 31 and the groove of the tool holder body shaft 1 when the robotic arm tool changing spindle is oriented. It cooperates with the anti-rotation pin 27 to ensure that the fixing pin 31 enters the positioning seat 55 for positioning.

[0066] The anti-rotation ring 3 is fixed on the shaft 1 of the tool holder body by the socket set screw 2.

[0067] The implementation principle of the cutting head in this embodiment of the utility model is as follows:

[0068] The needle roller bearing 15 moves within the cam groove of the cylindrical cam 16, driving the connecting shaft 14 to move. The connecting shaft 14 connects the needle roller bearing 15 to the tool holder shaft 43. The needle roller bearing 15 transmits the rotational motion and power of the cylindrical cam 16 to the tool holder shaft 43, which then rotates under the drive of the tool holder body shaft 1. The cam groove of the cylindrical cam 16 converts the rotational motion into reciprocating linear motion, enabling the tool holder to perform planing operations, such as keyway machining, on machining centers, CNC milling machines, and ordinary milling machines.

[0069] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A planing head, mounted on the end face of a machine tool spindle unit, characterized in that: It also includes a handle body shaft (1), a housing (40), and a tool insert shaft (43). The outer surface of the handle body shaft (1) is equipped with a handle bearing. The handle body shaft is connected to the inside of the housing (40) through the handle bearing. One end of the handle body shaft (1) is fixedly connected to a cylindrical cam (16). The cylindrical cam (16) has a cam groove. The inside of the tool insert shaft (43) is detachably connected to a tool insert rod (24). One end of the tool insert rod (24) is fixedly connected to a connecting shaft (14). The outer surface of the connecting shaft (14) is equipped with a needle roller bearing (15). The needle roller bearing (15) is tumblingly connected to the inside of the cam groove.

2. The sawing head according to claim 1, characterized in that: The cam groove is a surrounding groove, including a high ring channel and a low ring channel. Both ends of the high ring channel are fixedly connected to the two ends of the corresponding low ring channel. The needle roller bearing (15) rolls in the interior of the high ring channel and the low ring channel in turn. The housing (40) has a motion track adapted to the connecting shaft (14) inside, and the connecting shaft (14) is slidably connected to the inside of the housing (40).

3. The sawing head according to claim 2, characterized in that: An open linear bearing (18) is fixedly connected inside the housing (40), and the outer surface of the insert rod shaft (43) is engaged with the inside of the open linear bearing (18).

4. The sawing head according to claim 3, characterized in that: Two internal hexagonal set screws (23) are threaded onto the outer surface of the end of the insert rod shaft (43) near the insert rod (24), and one end of the two internal hexagonal set screws (23) is fastened to the outer surface of the insert rod (24).

5. The sawing head according to claim 4, characterized in that: The other end of the insert rod (24) is movably connected to the insert head (25), and the other end of the insert rod (24) is threaded with a flat-head screw (26) that passes through the insert head (25).

6. The sawing head according to claim 5, characterized in that: A thrust bearing (36) is installed on the outer surface of the tool holder body shaft (1).

7. The sawing head according to claim 6, characterized in that: Two ball bearings, one (7) and two (20), are mounted on the outer surface of the shaft (1) of the tool holder body, and the thrust bearing (36) is located between the ball bearings one (7) and two (20); A positioning and fixing plate (53) is also installed on the end face of the machine tool spindle unit. A positioning seat (55) and a fixing pin (31) are also installed on the outer surface of the housing (40). The positioning and fixing plate (53) is fastened to the end face of the machine tool spindle unit and carries the positioning seat (55). The fixing pin (31) is inserted into the tapered hole of the positioning seat (55) by a conical shaft.

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