Through groove machining device for shaft workpieces

Abstract

The invention provides a through groove machining device for shaft workpieces. The through groove machining device comprises a base; the positioning mechanism comprises a first positioning rod and a second positioning rod which are used for clamping the shaft workpieces and are symmetrically arranged, and V-shaped protrusions matched with the V-shaped grooves of the shaft workpieces are arranged on the sides, facing the shaft workpieces, of the first positioning rod and the second positioning rod; the pressing mechanism and the positioning mechanism are arranged in the axial direction of the shaft workpiece, the pressing mechanism comprises a pressing handle, a pressing plate shaft and a pressing plate, the pressing plate shaft is sleeved with the shaft workpiece, one end of the pressing plate shaft is connected with the pressing handle, the other end of the pressing plate shaft is connected with the pressing plate, the pressing plate is close to the shaft workpiece, and the pressing handle controls the pressing plate shaft to move in the axial direction of the shaft workpiece and drives the pressing plate to press the shaft workpiece; the grooving mechanism comprises a motor and a grooving cutter, and the motor is connected with the grooving cutter and controls the grooving cutter to move on the outer wall of the shaft workpiece in the axial direction and the radial direction of the shaft workpiece to cut the through groove of the shaft workpiece. The device can be used for precisely and efficiently cutting the double-through-groove of the shaft workpiece, so that the symmetry precision of the double-groove is high.

Description

Technical Field

[0001] This invention relates to the field of through-groove machining technology for shaft-type workpieces, and more particularly to a through-groove machining device for shaft-type workpieces. Background Technology

[0002] In the machining of shaft-type workpieces, machining two symmetrical through grooves is a common process requirement. Currently, the industry typically employs a machining scheme that uses the workpiece's own V-groove as a positioning datum, leveraging the structural characteristics of the V-groove to constrain the workpiece's positioning. (See [link to relevant documentation]). Figure 1 This provides the basic positioning conditions for the machining of symmetrical through slots, and this positioning method is widely used in conventional shaft workpiece machining scenarios.

[0003] However, existing technologies have significant limitations when using CNC milling machines to machine symmetrical through slots. Due to the lack of a dedicated device capable of machining two through slots in a single setup, operators must perform two clamping operations: first, machining one through slot; then, disassembling the workpiece and readjusting the clamping position before machining the other symmetrical through slot. During these two clamping operations, the workpiece's positioning datum is prone to deviation, making it difficult to achieve the required symmetry accuracy for high-precision machining. Furthermore, the repeated clamping significantly increases auxiliary machining time and reduces overall machining efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a through-groove machining device for shaft-type workpieces to solve the above-mentioned problems. It can be used to accurately and efficiently cut double through-grooves in shaft-type workpieces, resulting in high symmetry accuracy of the double grooves.

[0005] This invention proposes a through-groove machining device for shaft-type workpieces, wherein V-shaped grooves are symmetrically formed on the outer wall of the shaft-type workpiece, and the through-groove machining device includes:

[0006] Base;

[0007] The positioning mechanism is mounted on the base and includes a first positioning rod and a second positioning rod symmetrically arranged for clamping shaft-like workpieces. The first positioning rod and the second positioning rod have V-shaped protrusions on the side facing the shaft-like workpiece that match the V-shaped groove of the shaft-like workpiece.

[0008] The clamping mechanism is set on the base and is arranged along the axial direction of the positioning mechanism for the shaft-like workpiece. It includes a clamping handle, a pressure plate shaft, and a pressure plate. The shaft-like workpiece is sleeved on the pressure plate shaft. One end of the pressure plate shaft is connected to the clamping handle, and the other end is connected to the pressure plate. The pressure plate is close to the shaft-like workpiece. The clamping handle controls the pressure plate shaft to move along the axial direction of the shaft-like workpiece, thereby driving the pressure plate to clamp the shaft-like workpiece.

[0009] The grooving mechanism is mounted on the base and located on one side of the shaft workpiece. It includes a motor and a grooving cutter. The motor is connected to the grooving cutter and controls the grooving cutter to move along the axial and radial directions of the shaft workpiece on its outer wall to cut through grooves in the shaft workpiece.

[0010] In one embodiment, the positioning mechanism further includes a positioning support, a positioning handle, a first connecting rod, and a second connecting rod;

[0011] The positioning support is fixedly mounted on the base;

[0012] One end of the first positioning rod is rotatably connected to the positioning support, and the other end is rotatably connected to one end of the first connecting rod. The other end of the first connecting rod is rotatably connected to the positioning handle near the free end. The other end of the positioning handle is rotatably connected to one end of the second connecting rod. The other end of the second connecting rod is rotatably connected to one end of the second positioning rod. The other end of the second positioning rod is rotatably connected to the positioning support. The positioning handle is also rotatably connected to the positioning support at the position connecting the first connecting rod and the second connecting rod.

[0013] In one embodiment, the clamping mechanism further includes a clamping support, a push rod, a first pull rod, a second pull rod, and a pad;

[0014] The clamping support is fixedly mounted on the base;

[0015] One end of the clamping handle is a free end, and the other end is fixed with a first gear and rotatably connected to the clamping support;

[0016] The first pull rod has a third gear fixed at one end and is connected to the rotating pad at the other end; the other end is connected to the middle of the clamping handle at the other end.

[0017] The second pull rod has a fourth gear fixed at one end and is rotatably connected to the pad, and the other end is rotatably connected to one end of the push rod. The other end of the push rod is fixed to the second gear and is rotatably connected to the clamping support.

[0018] The first gear meshes with the second gear, and the third gear meshes with the fourth gear;

[0019] The pad is connected to the pressure plate shaft. By rotating the clamping handle, the pad moves along the axial direction of the shaft-like workpiece, which in turn drives the pressure plate shaft to move along the axial direction of the shaft-like workpiece.

[0020] In one embodiment, the clamping mechanism further includes a conical connector, which includes a conical surface and a bottom surface;

[0021] The pad is U-shaped, including two opposing side plates and a top plate. The first and second pull rods are rotatably connected between the two side plates of the pad by a pin. The bottom surface of the conical connector is fixedly connected to the top plate of the pad by screws.

[0022] One end of the pressure plate shaft is provided with a tapered groove that matches the tapered connector, and the tapered surface of the tapered connector matches the tapered groove of the pressure plate shaft;

[0023] A retainer is provided between the conical surface of the conical connector and the conical groove of the pressure plate shaft. The retainer is fixedly connected to the conical connector by screws. Each through hole of the retainer is provided with a steel ball. The conical connector and the pressure plate shaft are movably connected by the steel balls.

[0024] In one embodiment, a set screw is fixedly provided at one end of the clamping support near the shaft-like workpiece, and a U-shaped groove is provided at one end of the pressure plate shaft near the shaft-like workpiece. A pressure plate spring is provided between the set screw and the U-shaped groove of the pressure plate shaft, with one end of the pressure plate spring fixedly connected to the set screw and the other end contacting the pressure plate shaft.

[0025] In one embodiment, there are two pressure plates, which are rotatably connected to both sides of the pressure plate shaft by pins, and the two pressure plates press against both sides of one end of the shaft-like workpiece.

[0026] In one embodiment, the grooving mechanism further includes a grooving cutter support, a grooving cutter support seat, a grooving cutter guide rail, a cam, a camshaft seat, a cam coupling, and a motor coupling;

[0027] The grooving cutter includes a grooving cutter head and a grooving cutter connecting rod. The grooving cutter head is fixed to one end of the grooving cutter connecting rod and is positioned facing the outer wall of the shaft-like workpiece. The other end of the grooving cutter connecting rod is rotatably connected to the grooving cutter bracket.

[0028] The grooving cutter bracket is rotatably connected to one end of the grooving cutter connecting rod, which is slidably connected to the grooving cutter bracket seat. The grooving cutter bracket seat is fixed on the base.

[0029] The grooving guide rail is fixed on the base and located below the grooving tool bracket. The grooving guide rail is arranged along the axial direction of the shaft workpiece. A strip groove is opened on the upper part of the grooving guide rail. A boss matching the strip groove is fixed on the lower part of the grooving tool bracket. The grooving tool bracket slides along the strip groove of the grooving guide rail through the boss.

[0030] The camshaft of the cam passes through the camshaft seat and is connected to the cam coupling. The cam coupling is fixedly connected to the motor coupling. The motor coupling is connected to the motor shaft of the motor, and the motor drives the cam to rotate.

[0031] The end of the grooving cutter holder near the grooving cutter is connected to the profile surface of the cam via a roller. The rotation of the cam drives the grooving cutter holder to move on the grooving cutter guide rail, thereby driving the grooving cutter to move along the axial direction of the shaft-type workpiece.

[0032] The end of the grooving cutter connecting rod near the grooving cutter is connected to the end face of the cam via a center pin. The rotation of the cam drives the grooving cutter to move radially along the shaft-like workpiece.

[0033] In one embodiment, the motor is fixedly mounted on the base via a motor mount.

[0034] In one embodiment, a spacer is provided between the motor coupling and the cam coupling, and the motor coupling, the spacer, and the cam coupling are fixedly connected by bolts.

[0035] In one embodiment, a grooving spring is provided between the grooving tool bracket and the grooving tool bracket seat, with one end of the grooving tool spring fixedly connected to the grooving tool bracket seat and the other end sleeved on the grooving tool bracket.

[0036] Compared with the prior art, the beneficial effects of the through-groove machining device for shaft workpieces of the present invention are as follows:

[0037] 1) This invention uses a manually rotated positioning handle as the positioning power source. The V-shaped protrusions on the upper and lower positioning rods engage with the V-shaped grooves of the shaft-like workpiece to achieve precise positioning of the workpiece. A manually rotated clamping handle serves as the clamping power source. The clamping handle engages with the gears on the push rod at the dead point, and the first pull rod engages with the gears on the second pull rod at the dead point, causing the pressure plate to clamp the shaft-like workpiece. A motor is then used as the cutting power source, and a grooving tool is used to process the through grooves of the workpiece. This invention can efficiently process two symmetrical through grooves on a shaft-like workpiece by positioning it with the V-shaped grooves. It is easy to use and operates, and the processing is precise.

[0038] 2) The present invention achieves the rotation of the pressure plate shaft through the rolling friction between the steel ball and the pressure plate shaft, thereby enabling the workpiece to be rotated without removing the shaft-type workpiece, and quickly proceeding to the next through slot processing. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of a shaft workpiece to which the slotting device for shaft workpieces of the present invention is applicable;

[0040] Figure 2 This is a schematic diagram of the structure of a through-groove machining device for shaft-type workpieces according to an embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram of the base structure in a through-groove machining device for shaft-type workpieces according to an embodiment of the present invention;

[0042] Figure 4 This is a side view of a through-groove machining apparatus for shaft-type workpieces according to an embodiment of the present invention;

[0043] Figure 5 for Figure 4 AA section diagram;

[0044] Figure 6 for Figure 5 Enlarged view of B in the middle;

[0045] Figure 7 for Figure 5 Enlarged view of C;

[0046] Figure 8 for Figure 5 Enlarged view of D;

[0047] Figure 9 for Figure 5 Enlarged view of E in the middle;

[0048] Figure 10 for Figure 4 Enlarged view of G in the middle;

[0049] Figure 11 This is a top view of a through-groove machining apparatus for shaft-type workpieces according to an embodiment of the present invention;

[0050] Figure 12 for Figure 11 Middle FF cross section;

[0051] Figure 13 for Figure 5 Enlarged view of H in the middle;

[0052] Figure 14 for Figure 12 Enlarged view of I in the middle.

[0053] Figure Labels

[0054] 1. Base; 2. Positioning mechanism; 21. First positioning rod; 22. Second positioning rod; 23. V-shaped protrusion; 24. Positioning support; 25. Positioning handle; 26. First connecting rod; 27. Second connecting rod; 3. Clamping mechanism; 31. Clamping handle; 32. Pressure plate shaft; 33. Pressure plate; 34. Clamping support; 35. Push rod; 36. First pull rod; 37. Second pull rod; 38. Pad; 39. Conical connector; 311. First gear; 312. Second gear; 313. Third gear; 314. Fourth gear; 320. Cage; 321. Steel 330. Bead; 340. Pressure plate shaft pad; 341. Set screw; 350. Pressure plate sleeve; 4. Grooving mechanism; 41. Motor; 42. Grooving knife; 43. Cam; 44. Ejector pin; 45. Roller; 46. Pad; 47. Grooving knife spring; 411. Motor coupling; 412. Motor base; 421. Grooving knife support; 422. Grooving knife support seat; 423. Grooving knife guide rail; 431. Cam coupling; 432. Camshaft seat; 5. Pin; 6. Screw; 7. Bolt; 810. Shaft workpiece; 820. V-groove; 830. Through groove. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this invention more readily understood, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that while many specific details are set forth in the following description to provide a thorough understanding of the invention, the invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the invention; therefore, the invention is not limited to the specific embodiments disclosed below.

[0056] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0057] Secondly, the phrase "an embodiment" or "an embodiment" in this application refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the invention. The phrases "in one embodiment" and "an embodiment" appearing in different places in this specification do not all refer to the same embodiment, nor are they embodiments that are mutually exclusive, either alone or selectively, with other embodiments. The terms "comprising" or "including" indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term "and / or" as used in this application includes any and all combinations of one or more of the related listed items.

[0058] This invention proposes a through-groove machining device for shaft-type workpieces, suitable for shaft-type workpieces with symmetrical V-shaped grooves on their outer walls. The through-groove machining device includes a base 1, a positioning mechanism 2, a clamping mechanism 3, and a grooving mechanism 4. See [link to relevant documentation]. Figure 2 , Figure 3 , Figure 11The positioning mechanism 2 is mounted on the base 1 and includes a first positioning rod 21 and a second positioning rod 22 symmetrically arranged for clamping the shaft workpiece 810. The first positioning rod 21 and the second positioning rod 22 have V-shaped protrusions 23 fixedly arranged on the side facing the shaft workpiece 810, matching the V-shaped groove 820 of the shaft workpiece 810. The clamping mechanism 3 is mounted on the base 1 and arranged axially with the positioning mechanism 2 along the shaft workpiece 810, including a clamping handle 31, a pressure plate shaft 32, and a pressure plate 33. The shaft workpiece 810 is sleeved on the pressure plate shaft 32. One end of the pressure plate shaft 32 is connected to the clamping handle 31, and the other end is connected to the pressure plate 33, which is close to the shaft workpiece 810. The clamping handle 31 controls the pressure plate shaft 32 to move axially along the shaft workpiece 810, causing the pressure plate 33 to clamp the shaft workpiece 810. The grooving mechanism 4 is mounted on the base 1, located on one side of the shaft workpiece 810, and includes a motor 41 and a grooving cutter 42. Motor 41 connects to grooving cutter 42, controlling grooving cutter 42 to move along the axial and radial directions of shaft workpiece 810 on the outer wall of shaft workpiece 810, cutting through groove 830 of shaft workpiece 810.

[0059] The positioning mechanism 2 of one embodiment of the present invention further includes a positioning support 24, a positioning handle 25, a first connecting rod 26, and a second connecting rod 27. See also Figure 4 The positioning support 24 is fixedly mounted on the base 1. One end of the first positioning rod 21 is rotatably connected to the positioning support 24 via a pin 5, and the other end is rotatably connected to one end of the first connecting rod 26 via a pin 5. The other end of the first connecting rod 26 is rotatably connected to the positioning handle 25 near its free end via a pin 5. The other end of the positioning handle 25 is rotatably connected to one end of the second connecting rod 27 via a pin 5. The other end of the second connecting rod 27 is rotatably connected to one end of the second positioning rod 22 via a pin 5. The other end of the second positioning rod 22 is rotatably connected to the positioning support 24 via a pin 5. The positioning handle 25 is also rotatably connected to the positioning support 24 via a pin 5 at the position connecting the first connecting rod 26 and the second connecting rod 27.

[0060] Preferably, in this invention, the first positioning rod 21 and the second positioning rod 22 are arranged symmetrically in parallel, with the first positioning rod 21 on top and the second positioning rod 22 on the bottom. That is, when the first positioning rod 21 and the second positioning rod 22 clamp the shaft workpiece 810, the V-groove 820 of the shaft workpiece 810 faces upward and downward, respectively. The positioning handle 25 is horizontally positioned below the second positioning rod 22. The first connecting rod 26 is longer than the second connecting rod 27, and both the first connecting rod 26 and the second connecting rod 27 are vertically arranged. Specifically, the right positioning hole of the first positioning rod 21 is connected to the upper part of the positioning support 24 by a pin 5, and the left positioning hole is connected to the upper positioning hole of the first connecting rod 26 by a pin 5. The middle positioning hole of the positioning handle 25 is connected to the lower part of the positioning support 24 by a pin 5, the left positioning hole is connected to the lower positioning hole of the first connecting rod 26 by a pin 5, and the right positioning hole is connected to the lower positioning hole of the second connecting rod 27 by a pin 5. The left positioning hole of the second positioning rod 22 is connected to the positioning support 24 via a pin 5, and the right positioning hole is connected to the upper positioning hole of the second connecting rod 27 via a pin 5. In use, pulling down the positioning handle 25 causes the V-shaped protrusions 23 of the first positioning rod 21 and the second positioning rod 22 to engage with the V-shaped groove 820 of the shaft workpiece 810, achieving accurate positioning and clamping of the workpiece; lifting up the positioning handle 25 releases the clamping of the first positioning rod 21 and the second positioning rod 22 on the workpiece.

[0061] One embodiment of the clamping mechanism 3 of the present invention further includes a clamping support 34, a push rod 35, a first pull rod 36, a second pull rod 37, and a pad 38. See also Figure 5 , Figure 6 The clamping support 34 is fixedly mounted on the base 1. One end of the clamping handle 31 is a free end, and the other end is fixed with an irregular first gear 311, which is rotatably connected to the clamping support 34 via a pin 5. One end of the first pull rod 36 is fixed with an irregular third gear 313, which is rotatably connected to the pad 38 via a pin 5, and the other end is rotatably connected to the middle of the clamping handle 31 via a short pin. One end of the second pull rod 37 is fixed with an irregular fourth gear 314, which is rotatably connected to the pad 38 via a pin 5, and the other end is rotatably connected to one end of the push rod 35 via a short pin. The other end of the push rod 35 is fixed with an irregular second gear 312, which is rotatably connected to the clamping support 34 via a pin 5. The first gear 311 on the clamping handle 31 meshes with the second gear 312 on the push rod 35, and the third gear 313 on the first pull rod 36 meshes with the fourth gear 314 on the second pull rod 37. The pad 38 is connected to the pressure plate shaft 32. By rotating the clamping handle 31, the pad 38 is controlled to move along the axial direction of the shaft workpiece 810, thereby driving the pressure plate shaft 32 to move along the axial direction of the shaft workpiece 810.

[0062] Specifically, rotating the clamping handle 31 towards the pressure plate 33 causes the first gear 311 on the clamping handle 31 to mesh with the second gear 312 on the push rod 35, and the third gear 313 on the first pull rod 36 to mesh with the fourth gear 314 on the second pull rod 37 and lock them in the dead position. This pushes the pad 38 and the pressure plate shaft 32 towards the shaft workpiece 810, thereby causing the pressure plate 33 to clamp the shaft workpiece 810. Conversely, rotating the pressure plate 33 releases the clamping force on the workpiece. In the clamped state, the first pull rod 36 and the second pull rod 37 are parallel to each other and parallel to the axial direction of the shaft workpiece 810.

[0063] One embodiment of the clamping mechanism 3 of the present invention further includes a conical connector 39, see [link to previous document]. Figure 12 , Figure 13 , Figure 14 The conical connector 39 includes a conical surface and a bottom surface. The pad 38 is U-shaped, including two opposing side plates and a top plate. The first pull rod 36 and the second pull rod 37 are rotatably connected between the two side plates of the pad 38 via a pin 5. The bottom surface of the conical connector 39 is fixedly connected to the top plate of the pad 38 by a screw 6. One end of the pressure plate shaft 32 has a conical groove that matches the conical connector 39, and the conical surface of the conical connector 39 matches the conical groove of the pressure plate shaft 32. A retainer 320 is provided between the conical surface of the conical connector 39 and the conical groove of the pressure plate shaft 32. The retainer 320 is fixedly connected to the conical connector 39 by screws 6. Each through hole of the retainer 320 is provided with a steel ball 321. The conical connector 39 and the pressure plate shaft 32 are movably connected by the steel ball 321. The outer wall of the conical surface of the conical connector 39 and the conical groove of the pressure plate shaft 32 are respectively provided with arc-shaped grooves to match and accommodate the steel ball 321.

[0064] Specifically, the inner conical surface of the retainer 320 is connected to the outer conical surface of the conical connector 39 by screws 6. The retainer 320 has six through holes used to separate the steel balls 321. The steel balls 321 simultaneously contact the groove on the outer conical surface of the conical connector 39 and the groove in the conical groove of the pressure plate shaft 32. Pushing the clamping handle 31 drives the pad 38, the conical connector 39, and the steel balls 321 to move via gear meshing and linkage transmission, ultimately causing the pressure plate shaft 32 to move back and forth along the axial direction of the shaft-like workpiece 810, thus achieving the clamping or loosening of the workpiece by the pressure plate 33. During this process, the steel balls 321 roll between the conical connector 39 and the conical groove of the pressure plate shaft 32, allowing the pressure plate shaft 32 to rotate smoothly.

[0065] In one embodiment of the present invention, a set screw 340 is fixedly provided at one end of the clamping support 34 near the shaft workpiece 810, see [link to relevant documentation]. Figure 7The pressure plate shaft 32 has a U-shaped groove at one end near the shaft workpiece 810. A pressure plate spring 341 is provided between the set screw 340 and the U-shaped groove of the pressure plate shaft 32. One end of the pressure plate spring 341 is fixedly connected to the set screw 340, and the other end contacts the pressure plate shaft 32 to assist in buffering the movement of the pressure plate shaft 32.

[0066] In one embodiment of the present invention, there are two pressure plates 33, which are rotatably connected to both sides of the pressure plate shaft 32 by pins 5. The pressure plates 33 rotate around their pins 5, and the two pressure plates 33 press the two sides of one end of the shaft workpiece 810 respectively.

[0067] The end of the pressure plate shaft 32 near the shaft workpiece 810 is also fixed with a pressure plate shaft pad 330 by bolts 7. A pressure plate sleeve 350 is provided between the pressure plate shaft pad 330 and the pressure plate shaft 32, and two pressure plates 33 press on the pressure plate sleeve 350.

[0068] One embodiment of the grooving mechanism 4 of the present invention further includes a grooving cutter support 421, a grooving cutter support seat 422, a grooving cutter guide rail 423, a cam 43, a camshaft seat 432, a cam coupling 431, and a motor coupling 411. See also... Figure 8 , Figure 9 , Figure 10 The grooving cutter 42 includes a grooving cutter head and a grooving cutter connecting rod. The grooving cutter head is fixed to one end of the grooving cutter connecting rod and is positioned facing the outer wall of the shaft workpiece 810. The other end of the grooving cutter connecting rod is rotatably connected to the grooving cutter bracket 421 via a pin 5. The end of the grooving cutter bracket 421 rotatably connected to the grooving cutter connecting rod is slidably connected to the grooving cutter bracket seat 422 through a hole on the grooving cutter bracket seat 422, which is fixed to the base 1. The grooving cutter guide rail 423 is fixed to the base 1 and located below the grooving cutter bracket 421. The grooving cutter guide rail 423 is arranged along the axial direction of the shaft workpiece 810. A strip-shaped groove is formed on the upper part of the grooving cutter guide rail 423, and a boss matching the strip-shaped groove is fixed on the lower part of the grooving cutter bracket 421. The grooving cutter bracket 421 slides along the strip-shaped groove of the grooving cutter guide rail 423 via the boss. The camshaft of cam 43 passes through camshaft seat 432 and connects to cam coupling 431. The inner diameter boss of cam coupling 431 connects to the outer diameter groove of the boss shaft. Cam coupling 431 is fixedly connected to motor coupling 411. Motor coupling 411 connects to the motor shaft of motor 41. The outer diameter boss of motor shaft connects to the inner diameter groove of motor coupling 411. Motor 41 drives cam to rotate clockwise. A roller 45 is provided at the end of grooving cutter support 421 near the grooving cutter via pin 5. The roller 45 connects to the contour surface of cam 43. The rotation of cam 43 drives grooving cutter support 421 to move on grooving cutter guide rail 423, thereby driving grooving cutter 42 to move axially along shaft workpiece 810. A ejector pin 44 is fixedly provided at the end of grooving cutter connecting rod near the grooving cutter. The ejector pin 44 connects to the end face of cam 43. The rotation of cam 43 drives grooving cutter 42 to move radially along shaft workpiece 810.

[0069] Specifically, motor 41 drives cam 43 to rotate. Cam 43 drives grooving cutter support 421 and grooving cutter to move axially along shaft workpiece 810 via roller 45 and ejector pin 44. At the same time, grooving cutter 42 moves radially, thereby cutting through groove 830 in workpiece. The profile surface of cam 43 is designed based on the trajectory of grooving cutter 42 moving axially along shaft workpiece 810, and the end face of cam 43 is designed based on the trajectory of grooving cutter 42 moving radially along shaft workpiece 810.

[0070] In one embodiment of the present invention, the motor 41 is fixedly mounted on the base 1 by a motor mount 412, and the motor mount 412 is made of a metal with excellent thermal conductivity in order to achieve rapid heat dissipation of the motor.

[0071] In one embodiment of the present invention, a pad 46 is provided between the motor coupling 411 and the cam coupling 431, and the motor coupling 411, the pad 46 and the cam coupling 431 are fixedly connected by bolts 7.

[0072] In one embodiment of the present invention, a grooving spring 47 is provided between the grooving knife support 421 and the grooving knife support base 422. One end of the grooving spring 47 is fixedly connected to the grooving knife support base 422, and the other end is sleeved on the grooving knife support 421.

[0073] When using the slotting device for shaft workpiece 810 of the present invention, the specific operation is as follows: After placing the workpiece in the clamping mechanism 3, rotate the clamping handle 31 towards the pressure plate 33. This action drives the irregular gear on the push-pull rod to mesh and lock in the dead position, thereby pushing the conical connecting member 39, which is fixed to the pad 38, to move towards the pressure plate 33. As the conical connecting member 39 moves, its conical surface transmits the motion to the pressure plate shaft 32 through the steel ball 321 in the groove. During this process, the steel ball 321 rolls, transmitting the linear motion of the conical connecting member 39 to the pressure plate shaft 32, while also converting it into axial movement and rotation around the axis of the pressure plate shaft 32. The axial movement of the pressure plate shaft 32 drives the pressure plate 33 to clamp the workpiece. Next, lift the positioning handle 25, so that the V-shaped protrusion 23 of the first positioning rod 21 and the second positioning rod 22 fits tightly with the V-shaped groove 820 of the workpiece to achieve precise positioning. During machining, motor 41 starts, driving cam 43 to rotate clockwise via motor coupling 411 and cam coupling 431. The rotating cam 43 controls the radial reciprocating motion and axial cutting motion of the grooving cutter 42 through ejector pin 44 and roller 45. After machining is completed, the positioning handle 25 is pressed down to release the workpiece, and then the clamping handle 31 is rotated in the opposite direction. At this time, the pressure plate spring 341 rebounds, causing the pressure plate 33 to release the workpiece from its clamping state.

[0074] When it is necessary to cut the through groove on the other side, lift the positioning handle 25 to release the positioning rod from clamping the workpiece. Since the pressure plate shaft 32 is rotatable, the workpiece can be rotated directly to change the position of the upper and lower V-grooves 820. Then press down the positioning handle 25 to make the positioning rod clamp the workpiece again for machining the through groove on the other side.

[0075] It should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Such expressions are only for the purpose of making the description of the present invention simpler and more convenient, and do not indicate or imply that the component referred to must have a specific orientation or be constructed and operated in a specific orientation.

[0076] Furthermore, in this application, unless otherwise expressly specified and limited, terms such as "connection" and "setup" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] The present invention has the following beneficial effects:

[0078] 1) This invention uses a manually rotated positioning handle as the positioning power source. The V-shaped protrusions on the upper and lower positioning rods engage with the V-shaped grooves of the shaft-like workpiece to achieve precise positioning of the workpiece. A manually rotated clamping handle serves as the clamping power source. The clamping handle engages with the gears on the push rod at the dead point, and the first pull rod engages with the gears on the second pull rod at the dead point, causing the pressure plate to clamp the shaft-like workpiece. A motor is then used as the cutting power source, and a grooving tool is used to process the through grooves of the workpiece. This invention can efficiently process two symmetrical through grooves on a shaft-like workpiece by positioning it with the V-shaped grooves. It is easy to use and operates, and the processing is precise.

[0079] 2) The present invention achieves the rotation of the pressure plate shaft through the rolling friction between the steel ball and the pressure plate shaft, thereby enabling the workpiece to be rotated without removing the shaft-type workpiece, and quickly proceeding to the next through slot processing.

[0080] The constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in size, structure, shape, and proportions, as well as parameter values, installation arrangements, use of materials, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the elements may be inverted or otherwise changed, and the nature or number or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Various corresponding modifications and variations can be made by those skilled in the art according to this invention without departing from the spirit and essence of the invention, but such corresponding modifications and variations should fall within the protection scope of this invention.

Claims

1. A through-groove machining device for shaft-type workpieces, characterized in that, The outer wall of the shaft-like workpiece is symmetrically provided with V-shaped grooves, and the through-groove processing device includes: Base; The positioning mechanism is mounted on the base and includes a first positioning rod and a second positioning rod symmetrically arranged for clamping shaft-like workpieces. The first positioning rod and the second positioning rod have V-shaped protrusions on the side facing the shaft-like workpiece that match the V-shaped groove of the shaft-like workpiece. The clamping mechanism is set on the base and is arranged along the axial direction of the positioning mechanism for the shaft-like workpiece. It includes a clamping handle, a pressure plate shaft, and a pressure plate. The shaft-like workpiece is sleeved on the pressure plate shaft. One end of the pressure plate shaft is connected to the clamping handle, and the other end is connected to the pressure plate. The pressure plate is close to the shaft-like workpiece. The clamping handle controls the pressure plate shaft to move along the axial direction of the shaft-like workpiece, thereby driving the pressure plate to clamp the shaft-like workpiece. The grooving mechanism is mounted on the base and located on one side of the shaft workpiece. It includes a motor and a grooving cutter. The motor is connected to the grooving cutter and controls the grooving cutter to move along the axial and radial directions of the shaft workpiece on its outer wall to cut through grooves in the shaft workpiece.

2. The through-groove machining device for shaft-type workpieces according to claim 1, characterized in that, The positioning mechanism also includes a positioning support, a positioning handle, a first connecting rod, and a second connecting rod; The positioning support is fixedly mounted on the base; One end of the first positioning rod is rotatably connected to the positioning support, and the other end is rotatably connected to one end of the first connecting rod. The other end of the first connecting rod is rotatably connected to the positioning handle near the free end. The other end of the positioning handle is rotatably connected to one end of the second connecting rod. The other end of the second connecting rod is rotatably connected to one end of the second positioning rod. The other end of the second positioning rod is rotatably connected to the positioning support. The positioning handle is also rotatably connected to the positioning support at the position connecting the first connecting rod and the second connecting rod.

3. The through-groove machining device for shaft-type workpieces according to claim 1, characterized in that, The clamping mechanism also includes a clamping support, a push rod, a first pull rod, a second pull rod, and a pad; The clamping support is fixedly mounted on the base; One end of the clamping handle is a free end, and the other end is fixed with a first gear and rotatably connected to the clamping support; The first pull rod has a third gear fixed at one end and is connected to the rotating pad at the other end; the other end is connected to the middle of the clamping handle at the other end. The second pull rod has a fourth gear fixed at one end and is rotatably connected to the pad, and the other end is rotatably connected to one end of the push rod. The other end of the push rod is fixed to the second gear and is rotatably connected to the clamping support. The first gear meshes with the second gear, and the third gear meshes with the fourth gear; The pad is connected to the pressure plate shaft. By rotating the clamping handle, the pad moves along the axial direction of the shaft-like workpiece, which in turn drives the pressure plate shaft to move along the axial direction of the shaft-like workpiece.

4. The slotting apparatus for shaft-type workpieces according to claim 3, characterized in that, The clamping mechanism further includes a conical connector, which includes a conical surface and a bottom surface; The pad is U-shaped, including two opposing side plates and a top plate. The first and second pull rods are rotatably connected between the two side plates of the pad by a pin. The bottom surface of the conical connector is fixedly connected to the top plate of the pad by screws. One end of the pressure plate shaft is provided with a tapered groove that matches the tapered connector, and the tapered surface of the tapered connector matches the tapered groove of the pressure plate shaft; A retainer is provided between the conical surface of the conical connector and the conical groove of the pressure plate shaft. The retainer is fixedly connected to the conical connector by screws. Each through hole of the retainer is provided with a steel ball. The conical connector and the pressure plate shaft are movably connected by the steel balls.

5. The slotting apparatus for shaft-type workpieces according to claim 3, characterized in that, A set screw is fixedly installed at one end of the clamping support near the shaft-like workpiece. A U-shaped groove is opened at one end of the pressure plate shaft near the shaft-like workpiece. A pressure plate spring is installed between the set screw and the U-shaped groove of the pressure plate shaft. One end of the pressure plate spring is fixedly connected to the set screw, and the other end contacts the pressure plate shaft.

6. The through-groove machining device for shaft-type workpieces according to claim 3, characterized in that, There are two pressure plates, which are rotatably connected to both sides of the pressure plate shaft by pins. The two pressure plates press against both sides of one end of the shaft-type workpiece.

7. The slotting apparatus for shaft-type workpieces according to claim 1, characterized in that, The grooving mechanism also includes a grooving cutter support, a grooving cutter support seat, a grooving cutter guide rail, a cam, a camshaft seat, a cam coupling, and a motor coupling; The grooving cutter includes a grooving cutter head and a grooving cutter connecting rod. The grooving cutter head is fixed to one end of the grooving cutter connecting rod and is positioned facing the outer wall of the shaft-like workpiece. The other end of the grooving cutter connecting rod is rotatably connected to the grooving cutter bracket. The grooving cutter bracket is rotatably connected to one end of the grooving cutter connecting rod, which is slidably connected to the grooving cutter bracket seat. The grooving cutter bracket seat is fixed on the base. The grooving guide rail is fixed on the base and located below the grooving tool bracket. The grooving guide rail is arranged along the axial direction of the shaft workpiece. A strip groove is opened on the upper part of the grooving guide rail. A boss matching the strip groove is fixed on the lower part of the grooving tool bracket. The grooving tool bracket slides along the strip groove of the grooving guide rail through the boss. The camshaft of the cam passes through the camshaft seat and is connected to the cam coupling. The cam coupling is fixedly connected to the motor coupling. The motor coupling is connected to the motor shaft of the motor, and the motor drives the cam to rotate. The end of the grooving cutter holder near the grooving cutter is connected to the profile surface of the cam via a roller. The rotation of the cam drives the grooving cutter holder to move on the grooving cutter guide rail, thereby driving the grooving cutter to move along the axial direction of the shaft-type workpiece. The end of the grooving cutter connecting rod near the grooving cutter is connected to the end face of the cam via a center pin. The rotation of the cam drives the grooving cutter to move radially along the shaft-like workpiece.

8. The slotting apparatus for shaft-type workpieces according to claim 7, characterized in that, The motor is fixedly mounted on the base via a motor mount.

9. The slotting apparatus for shaft-type workpieces according to claim 7, characterized in that, A spacer is provided between the motor coupling and the cam coupling, and the motor coupling, spacer, and cam coupling are fixedly connected by bolts.

10. The slotting apparatus for shaft-type workpieces according to claim 7, characterized in that, A grooving spring is provided between the grooving cutter holder and the grooving cutter holder base. One end of the grooving spring is fixedly connected to the grooving cutter holder base, and the other end is sleeved on the grooving cutter holder.

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