CN113523079A - Gear shaping type edge cutting machine and edge cutting method thereof - Google Patents

Abstract

The invention relates to a gear shaping type edge cutting machine and an edge cutting method thereof. The gear shaping type edge trimmer comprises a rack, a lower die assembly, an upper die assembly and a driving assembly; the lower die assembly comprises a lower workbench and a lower cutting die fixed above the lower workbench; the upper die assembly comprises an upper workbench, an upper cutting die fixed below the upper workbench and an upper linear driving mechanism; the driving assembly comprises an eccentric shaft, a rack, a lower linear driving mechanism and an auxiliary linear driving mechanism; the eccentric shaft is rotatably connected to the rack around the axis of the eccentric shaft, the lower end of the eccentric shaft is provided with meshing teeth, the rack is meshed with the meshing teeth on the eccentric shaft, and the upper end of the eccentric shaft is connected with the lower workbench. Lower linear drive mechanism and rack replace the motor among the prior art to drive the rotation of workstation down, compare in the motor, lower linear drive mechanism's vibration is littleer, vibration when reducing the bead cutter motion to the vibration and the displacement of the relative work piece of upper cutting die and lower cutting die have been reduced, have improved the precision of side cut.

Description

Gear shaping type edge cutting machine and edge cutting method thereof

Technical Field

The invention relates to the field of machining, in particular to a gear shaping type edge cutting machine and an edge cutting method thereof.

Background

For blanked, stamped or stretch-formed shell or lid box type products, such as: the lunch-box, various regular or irregular class articles such as lithium cell casing, bucket, basin, door handle, these article shaping backs, no matter be metalwork, working of plastics or other materials, the stamping forming back because the edge unevenness of part, often all need cut edge the part that has the clout, these clouts that need cut are the waste material limit of work piece.

In the prior art, when a workpiece is cut, a motor is mostly used for driving a cutting die to rotate, but the motor drives the cutting die to vibrate due to certain vibration during operation, so that the precision of the cut workpiece is influenced.

Disclosure of Invention

The invention aims to provide a gear shaping type edge cutting machine to improve the edge cutting precision.

In order to solve the technical problems, the invention adopts the following technical scheme:

according to one aspect of the present invention, there is provided a gear shaping edge trimmer comprising a frame, a lower die assembly, an upper die assembly and a drive assembly; the lower die assembly comprises a lower workbench arranged on the rack and a lower cutting die fixed above the lower workbench; the upper die assembly comprises an upper workbench arranged on the rack, an upper cutting die fixed below the upper workbench and an upper linear driving mechanism fixed on the rack; the upper linear driving mechanism is connected with the upper workbench so as to drive the upper workbench to move towards or away from the lower workbench; the vertical projection of the upper cutting die falls onto the lower cutting die, and a cutting edge is arranged between the upper cutting die and the lower cutting die; the driving assembly comprises an eccentric shaft, a rack, a lower linear driving mechanism and an auxiliary linear driving mechanism; the eccentric shaft is rotatably connected to the rack around the axis of the eccentric shaft, meshing teeth are arranged on the periphery of the eccentric shaft, the rack is matched with the meshing teeth on the eccentric shaft, the eccentric shaft is connected with the lower workbench, the lower linear driving mechanism is provided with a lower driving shaft which can linearly extend and retract along the horizontal direction, and the lower driving shaft is connected with the rack; the auxiliary linear driving mechanism is fixed on the rack and positioned outside the lower workbench, the auxiliary linear driving mechanism is provided with an auxiliary driving shaft which can linearly extend and retract along the horizontal direction, and the auxiliary driving shaft is abutted against the lower workbench and used for driving the lower workbench to horizontally move, so that the upper cutting die collides with a workpiece and breaks a cut on the workpiece; the lower linear driving mechanism drives the rack to move horizontally, the rack drives the meshing teeth to rotate so as to drive the eccentric shaft to rotate along with the meshing teeth, the eccentric shaft rotates to drive the lower workbench to rotate, and the lower cutting die moves along with the lower workbench so as to drive a workpiece on the lower cutting die to move relative to the upper cutting die, so that the upper cutting die cuts the edge of the workpiece.

Optionally, the driving mechanism further comprises a sliding block, and the upper end of the eccentric shaft is rotatably connected with the sliding block around the axis of the eccentric shaft; the bottom surface of the lower workbench is provided with a sliding groove, the sliding groove extends along the axis direction of a driving shaft of the auxiliary linear driving mechanism, and the sliding block is arranged in the sliding groove and can move along the extending direction of the sliding groove.

Optionally, the driving assembly further includes an elastic return member, the elastic return member is disposed at an outer side of the lower working table and connected to the lower working table, and the elastic return member is used for returning the lower working table pushed by the auxiliary linear driving mechanism.

Optionally, the frame has a fixing seat, a through hole is formed in the fixing seat, the eccentric shaft is mounted in the through hole through a bearing, and the lower end of the eccentric shaft penetrates through the fixing plate.

Optionally, the rack further has a frame, the frame is a hollow structure with an upper opening and a lower opening, and the frame is fixed on the upper surface of the fixing seat; the lower end of the lower workbench is located in the frame, the elastic return piece is located on one side, deviating from the auxiliary linear driving mechanism, of the lower workbench, one end of the elastic return piece is fixed on the frame, and the other end of the elastic return piece is abutted to the lower workbench.

Optionally, the driving assembly further comprises a base plate and balls, the base plate is provided with a mounting hole, the balls are arranged in the mounting hole and exceed the upper surface and the lower surface of the base plate, the base plate and the balls are arranged between the fixing seat and the lower workbench, and the balls are abutted to the upper surface of the fixing seat and the lower surface of the lower workbench.

Optionally, the driving assembly further comprises a top rod and a jacking mechanism for driving the top rod to move vertically; the fixed seat, the lower working table and the lower cutting die are provided with through jacking holes along the vertical direction, and the ejector rod is arranged in the jacking holes and used for jacking the workpiece upwards.

Optionally, the rack is further provided with a vertically arranged guide rail and a top plate fixed to the top end of the guide rail, the guide rail is fixed to the upper surface of the fixed seat and extends vertically upwards, the upper workbench is movably mounted on the guide rail along the extending direction of the guide rail, the upper linear driving mechanism is provided with an upper driving body and an upper driving shaft which can stretch out and draw back along the vertical direction, the upper driving body of the upper linear driving mechanism is fixed on the top plate, and the upper driving shaft of the upper linear driving mechanism is fixed on the upper workbench.

According to one aspect of the invention, the invention provides an edge cutting method of a gear shaping edge cutting machine, which comprises the steps of providing the gear shaping edge cutting machine; placing and fixing a workpiece on the lower cutting die; the upper linear driving mechanism drives the upper workbench to vertically move downwards, so that the upper cutting die and the lower cutting die are matched; the auxiliary linear driving mechanism drives the lower workbench to move horizontally, the lower cutting die moves along with the lower workbench, so that the workpiece on the lower cutting die moves relative to the upper cutting die, and the upper cutting die collides with the workpiece to shear the workpiece to form a crevasse; the lower linear driving mechanism drives the eccentric shaft to rotate, so that the lower workbench does circular motion relative to the upper cutting die to cut edges of the workpiece.

According to the technical scheme, the invention has at least the following advantages and positive effects:

according to the invention, a workpiece is fixed on a lower cutting die, a lower linear driving mechanism drives a rack to move, the rack drives meshing teeth to rotate so as to drive an eccentric shaft to rotate along with the meshing teeth, the eccentric shaft rotates to drive a lower working table to do circumferential movement, and the lower cutting die moves along with the lower working table so as to drive the workpiece on the lower cutting die to move relative to the upper cutting die so as to cut edges of the workpiece; according to the invention, the lower linear driving mechanism and the rack replace a motor in the prior art to drive the lower workbench to rotate, and compared with the motor, the lower linear driving mechanism has smaller vibration and reduces the vibration of the edge trimmer during movement, so that the vibration and displacement of the upper cutting die and the lower cutting die relative to a workpiece are reduced, and the edge cutting precision is improved.

The auxiliary linear driving mechanism is fixed on the rack and located on the outer side of the lower workbench, the auxiliary linear driving mechanism is provided with an auxiliary driving shaft which can linearly extend and retract along the horizontal direction, the auxiliary driving shaft is abutted against the lower workbench and used for driving the lower workbench to horizontally move, and therefore the upper cutting die collides with a workpiece to break the workpiece. After the auxiliary linear mechanism breaks the opening of the workpiece, when the upper linear driving mechanism starts to move, the upper cutting die starts to shear along one end of the broken opening, so that the upper cutting die is prevented from slipping on the workpiece, and the trimming precision is improved. Meanwhile, after the workpiece is cut, the workpiece has a tearing structure and a tearing trend at the cut, and when the upper cutting die shears the workpiece, the workpiece can be trimmed by shearing the workpiece along the cut with smaller acting force, so that the lower linear driving mechanism with smaller power can be used for trimming, and the cost is saved.

Furthermore, the auxiliary linear driving mechanism is fixed on the rack, the auxiliary driving shaft abuts against the lower workbench, the auxiliary linear driving mechanism is not connected with the lower workbench, the weight of the lower workbench is reduced, the driving force required by the motion of the workbench is reduced, the lower linear driving mechanism with smaller power is used for trimming, and the cost is saved. Meanwhile, the auxiliary linear driving mechanism is not required to be connected with the lower workbench, so that the installation and production processes are reduced.

Drawings

FIG. 1 is an exploded view of the gear trimmer of the present invention;

FIG. 2 is a schematic view of another exploded view of the gear trimmer of the present invention;

FIG. 3 is a schematic cross-sectional view of the gear trimmer of the present invention;

FIG. 4 is a schematic view of another cross-sectional configuration of the gear trimmer of the present invention;

FIG. 5 is an enlarged view at A in FIG. 4;

fig. 6 is a flowchart of the trimming method of the present invention.

The reference numerals are explained below:

1. a frame; 11. a fixed seat; 12. a top plate; 13. a guide rail; 14. a box body; 15. a frame; 111. a through hole; 2. an upper die assembly; 21. an upper working table; 22. feeding a cutting die; 23. an upper linear drive mechanism; 3. a lower die assembly; 31. a lower working table; 311. moving the plate; 312. a work table; 313. a chute; 32. a cutting die is arranged; 4. a drive assembly; 40. a jacking mechanism; 41. an eccentric shaft; 411. a bearing; 42. a rack; 43. a slider; 44. a lower linear drive mechanism; 45. meshing teeth; 46. an auxiliary linear drive mechanism; 47. a base plate; 48. a ball bearing; 49. an elastic return member; 5. and a hydraulic power system.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

Referring to fig. 1 to 4, the present embodiment provides a gear shaping type edge trimmer, which includes a frame 1, and an upper die assembly 2, a lower die assembly 3 and a driving assembly 4 disposed on the frame 1. Go up the upper die component 2 and the lower mould component 3 is counterpointed from top to bottom and is set up, and goes up and be provided with the edge of a knife between mould component 2 and the lower mould component 3. When the edge of the workpiece is cut, the workpiece is fixed on the lower die component 3, the driving component 4 drives the lower die component 3 to move relative to the upper die component 2, and the edge of the workpiece is cut by using a knife edge between the upper die component 2 and the lower die component 3.

In this embodiment, the edge trimmer is of a vertical structure, and the vertical and horizontal positions in the text are referred to as vertical positions, and in some embodiments, the corresponding reference position of the horizontal edge trimmer is adaptively changed.

The frame 1 of the present embodiment includes a fixing base 11, a top plate 12 disposed above the fixing base 11 at an interval, a plurality of guide rails 13 connected between the fixing base 11 and the top plate 12, a box 14 fixed on the bottom surface of the fixing base 11, and a frame 15 fixed on the upper surface of the fixing base 11. The fixing base 11 is provided with a through hole 111 along the vertical direction, and the frame 15 is a hollow structure with an upper opening and a lower opening.

The upper die assembly 2 includes an upper table 21 slidably coupled to the guide rail 13 in the extending direction of the guide rail 13, an upper cutting die 22 fixed below the upper table 21, and an upper linear driving mechanism 23 fixed to the top plate 12. The upper linear driving mechanism 23 has an upper driving body and an upper driving shaft which can extend and retract in the vertical direction, the upper driving body of the upper linear driving mechanism 23 is fixed on the top plate 12, and the upper driving shaft of the upper linear driving mechanism 23 is fixed on the upper working table 21 to drive the upper working table 21 to slide along the guide rail 13, so that the upper cutting die 22 moves towards or away from the lower die assembly 3.

Further, the upper cutting die 22 is provided with a cutting edge for shearing, and the cutting edge is of an annular structure.

In this embodiment, the upper linear driving mechanism 23 is an oil cylinder, and in other embodiments, the upper linear driving mechanism 23 may be an air cylinder.

The lower die assembly 3 includes a lower table 31 disposed above the fixing base 11, and a lower cutting die 32 fixed above the lower table 31.

The lower table 31 of the present embodiment includes a moving plate 311 and a table plate 312 fixed above the moving plate 311, the moving plate 311 is located in the frame 15, the table plate 312 is located above the frame 15, and the lower cutting die 32 is fixed above the table plate 312.

Further, a sliding groove 313 is formed on a lower surface of the lower table 31, and specifically, a sliding groove 313 is formed on a lower surface of the moving plate 311.

Further, the vertical projection of the upper die 22 falls onto the lower die 32 to fix the workpiece between the upper die 22 and the lower die 32 when the upper die 22 and the lower die 32 are clamped.

In this embodiment, the driving assembly 4 includes an eccentric shaft 41, a rack 42, a slider 43, and a lower linear driving mechanism 44 for driving the rack 42 to move.

The eccentric shaft 41 is rotatably connected to the fixed seat 11 around its axis. Specifically, a bearing 411 is mounted on the outer periphery of the eccentric shaft 41, and the bearing 411 is fixed in the through hole 111 of the fixing base 11.

The lower end of the eccentric shaft 41 penetrates through the fixed seat 11 and extends into the box 14, and the lower end of the eccentric shaft 41 is provided with engaging teeth 45, in this embodiment, the engaging teeth 45 on the eccentric shaft 41 are installed on the existing gear. In other embodiments, the toothing 45 can be machined directly on the eccentric shaft 41.

The rack 42 is installed in the casing 14 and is slidable in the casing 14, and the rack 42 is engaged with the engaging teeth 45 at the lower end of the eccentric shaft 41.

The slider 43 is rotatably mounted on the upper end of the eccentric shaft 41 and is disposed in the slide groove 313.

The lower linear driving mechanism 44 has a lower driving body and a lower driving shaft that can extend and retract in the horizontal direction, the lower driving body of the lower linear driving mechanism 44 is fixed on the box 14, and the lower driving shaft of the lower linear driving mechanism 44 is connected with the rack 42 for driving the rack 42 to move in the extending direction of itself. The lower linear driving mechanism 44 may be an oil cylinder or an air cylinder.

The lower linear driving mechanism 44 drives the rack 42 to move along the extending direction of the rack 42 itself, so as to drive the meshing teeth 45 to rotate, and the eccentric shaft 41 rotates along with the meshing teeth. The eccentric shaft 41 rotates to drive the slide block 43 to make circular motion on the eccentric shaft 41.

Further, the driving assembly 4 further includes an auxiliary linear driving mechanism 46, and the auxiliary linear driving mechanism 46 has an auxiliary driving body and an auxiliary driving shaft that can be extended and contracted in the horizontal direction, and the auxiliary driving body of the auxiliary linear driving mechanism 46 is fixed to the frame 15 and is located outside the lower table 31. The auxiliary drive shaft of the auxiliary linear drive mechanism 46 abuts on the moving plate 311 of the lower table 31, the slide groove 313 on the bottom surface of the moving plate 311 extends in the axial direction of the auxiliary drive shaft of the auxiliary linear drive mechanism 46, and the slider 43 is slidable in the slide groove 313 in the extending direction of the slide groove 313.

Specifically, in the embodiment, the auxiliary linear driving mechanism 46 is an oil cylinder, a cylinder body of the auxiliary linear driving mechanism 46 is fixed on the frame 15, and a rod body of the auxiliary linear driving mechanism 46 abuts against an outer side surface of the moving plate 311.

The eccentric shafts 41 of the present embodiment are provided in two, the upper ends of the two eccentric shafts 41 are respectively provided with a slide block 43, and the two slide blocks 43 are arranged to prevent the lower working table 31 and the slide blocks 43 from rotating relatively.

When trimming a workpiece, the auxiliary linear drive mechanism 46 drives the moving plate 311 to move relatively in the extending direction of the slide groove 313.

Referring to fig. 5, the driving assembly 4 further includes an elastic return member 49, the elastic return member 49 is disposed outside the lower table 31, and a thrust direction of the elastic return member 49 is parallel to an axial direction of an auxiliary driving shaft of the auxiliary linear driving mechanism 46. Specifically, the elastic return member 49 may be a spring or an elastic shaft, the elastic return member 49 is located on a side of the lower table 31 away from the auxiliary linear driving mechanism 46, one end of the elastic return member 49 is fixed on the frame 15, and the other end abuts against the lower table 31.

In this embodiment, the driving shaft of the auxiliary linear driving mechanism 46 extends to push the lower working table 31 to translate, the lower cutting die 32 moves along with the lower working table 31, so that the workpiece on the lower cutting die 32 moves relative to the upper cutting die 22, the upper cutting die 22 breaks the workpiece, then the driving shaft of the auxiliary linear driving mechanism 46 retracts, the lower working table 31 pushes the lower working table 31 back to the initial position under the elastic force of the elastic return piece 49, at this time, the side surface of the lower working table 31 abuts against the frame 15, and the elastic return piece 49 returns the lower working table 31 pushed by the auxiliary linear driving mechanism 46.

In the present embodiment, the axial direction of the drive shaft of the auxiliary linear drive mechanism 46 is perpendicular to the axial direction of the drive shaft of the lower linear drive mechanism 44, and in other embodiments, the axial direction of the drive shaft of the auxiliary linear drive mechanism 46 may be parallel to the axial direction of the drive shaft of the lower linear drive mechanism 44. The auxiliary linear driving mechanism 46 may be an oil cylinder or an air cylinder.

Further, referring to fig. 5, the driving assembly 4 further includes a pad 47 and balls 48, the pad 47 is provided with a mounting hole, the balls 48 are disposed in the mounting hole and exceed the upper surface and the lower surface of the pad 47, the pad 47 and the balls 48 are disposed between the fixed base 11 and the lower table 31, and the balls 48 abut against the upper surface of the fixed base 11 and the lower surface of the lower table 31. Specifically, the balls 48 abut on the lower surface of the moving plate 311.

A backing plate 47 is arranged between the lower surface of the lower workbench 31 and the fixed seat 11, a ball 48 is clamped on the backing plate 47, and the ball 48 is supported between the lower workbench 31 and the fixed seat 11. Specifically, the balls 48 are supported between the bottom surface of the moving plate 311 and the upper surface of the fixed base 11. The balls 48 are provided in plurality, the balls 48 are positioned by the pad plate 47, the balls 48 and the pad plate 47 are both located in the frame 15, and the outside of the pad plate 47 abuts against the frame 15. When the lower table 31 moves relative to the fixed base 11, the lower table 31 moves on the balls 48, and the balls 48 rotate in the pad 47, so that the friction force generated by the movement of the lower table 31 is reduced. When the lower working table 31 moves, the lower working table 31 is not contacted with the fixed seat 11, and the abrasion of the lower working table 31 and the fixed seat 11 caused by friction is avoided.

Further, the balls 48 are disposed on the pad plate 47 such that a gap is formed between the slider 43 and the upper wall of the slide groove 313, thereby reducing a frictional force between the slider 43 and the slide groove 313.

The driving assembly 4 of the present embodiment further includes a ram (not shown) and a jacking mechanism 40 for driving the ram to move vertically; specifically, the cylinder of the jack 40 is fixed to the box 14; a through jacking hole (not shown in the figure) is formed among the fixed seat 11, the lower worktable 31 and the lower cutting die 32, and a jacking rod is arranged in the jacking hole and can slide in the jacking hole.

Specifically, the ram may be a rod portion of the jacking mechanism 40, or may be another structure fixed on the rod.

Further, the edge trimmer of the embodiment further comprises a hydraulic power system 5 and a control center, wherein the hydraulic power system 5 is connected with the upper linear driving mechanism 23, the lower linear driving mechanism 44, the auxiliary linear driving mechanism 46 and the jacking mechanism 40 and provides power for the upper linear driving mechanism 23, the lower linear driving mechanism 44, the auxiliary linear driving mechanism 46 and the jacking mechanism 40. The control center is electrically controlled to connect the upper linear driving mechanism 23, the lower linear driving mechanism 44, the auxiliary linear driving mechanism 46 and the jacking mechanism 40.

Based on the above-described structure, in the edge trimmer of the present embodiment, when trimming, the workpiece is placed and fixed on the lower blade die 32, and the drive shaft of the upper linear drive mechanism 23 is extended downward, so that the upper blade die 22 is moved downward and is clamped with the lower blade die 32. The auxiliary linear driving mechanism 46 extends to drive the lower table 31 to start translation from the initial position, so that the upper cutting die 22 cuts a crevasse on one side of the workpiece. Then, the auxiliary linear driving mechanism 46 is retracted, and the elastic return piece 49 pushes the lower table 31 back to the initial position.

The lower linear driving mechanism 44 drives the rack 42 to move, the rack 42 drives the meshing teeth 45 to rotate, the eccentric shaft 41 rotates along with the rack, the lower workbench 31 is driven to do circular motion, the workpiece makes circular motion relative to the upper cutting die 22, and the upper cutting die 22 starts to shear the workpiece along the crevasse position of the workpiece. When the lower linear driving mechanism 44 starts to move, the upper cutting die 22 starts to shear along one end of the crevasse, so that the upper cutting die 22 is prevented from slipping on a workpiece, and the trimming precision is improved. Meanwhile, after the workpiece is cut, the workpiece has a tearing structure and a tearing trend at the cut, and when the upper cutting die 22 shears the workpiece, the workpiece can be trimmed by shearing the workpiece along the cut with smaller acting force, so that the lower linear driving mechanism 44 with smaller power can be used for trimming, and the cost is saved.

When the auxiliary linear driving mechanism 46 drives the lower table 31 to return to the initial position, the upper cutting die 22 is pushed out from the crevasse of the workpiece, so that the upper cutting die 22 is prevented from being stuck at the crevasse, and the acting force required when the lower linear driving mechanism 44 is started is reduced.

After the upper cutting die 22 finishes trimming the workpiece, the lower linear driving mechanism 44 drives the rack 42 to return to the initial position, so that the lower table 31 and the lower cutting die 32 return to the initial position. Then, the upper linear driving mechanism 23 drives the upper table 21 and the upper cutting die 22 to move upward and return to the initial positions. The jacking mechanism 40 drives the ejector rod to jack up the trimmed workpiece upwards, and the trimmed workpiece is taken down from the edge trimmer.

In the invention, the lower linear driving mechanism 44 and the rack 42 replace a motor in the prior art to drive the lower workbench 31 to rotate, and compared with the motor, the lower linear driving mechanism 44 vibrates more downwards to reduce the vibration of the edge trimmer during movement, so that the vibration and displacement of the upper cutting die 22 and the lower cutting die 32 relative to a workpiece are reduced, and the edge cutting precision is improved.

Referring to fig. 6, the present embodiment further provides a trimming method of the gear shaping type edge trimmer, which provides the gear shaping type edge trimmer described above;

s10: the workpiece is placed on and fixed to the lower cutting die 32.

S20: the upper linear driving mechanism 23 drives the upper table 21 to move vertically downward, so that the upper die 22 and the lower die 32 are clamped. Specifically, the drive shaft of the upper linear drive mechanism 23 extends downward to drive the upper table 21 and the upper cutting die 22 to move downward, so that the upper cutting die 22 and the lower cutting die 32 are clamped.

S30: the auxiliary linear driving mechanism 46 drives the lower table 31 to move horizontally, the lower cutting die 32 moves along with the lower table, the workpiece of the lower cutting die 32 moves relative to the upper cutting die 22, and the upper cutting die 22 cuts the workpiece to form a crevasse. Specifically, in the present embodiment, the auxiliary linear driving mechanism 46 is extended, so that the lower table 31 moves relative to the slider 43 in the extending and retracting direction of the auxiliary linear driving mechanism 46, so that the workpiece on the lower cutting die 32 moves relative to the upper cutting die 22, and the upper cutting die 22 cuts the workpiece to form a cut on the workpiece. The auxiliary linear driving mechanism 46 is retracted and the elastic return member 49 pushes the lower table 31 back to the initial position.

S40: the lower linear driving mechanism 44 drives the eccentric shaft 41 to rotate, so that the lower workbench 31 makes a circular motion relative to the upper cutting die 22 to cut edges of the workpiece. Specifically, the lower linear driving mechanism 44 drives the rack 42 to move, the rack 42 moves to drive the meshing teeth 45 to rotate, so as to drive the eccentric shaft 41 to rotate on the fixed seat 11, and the eccentric shaft 41 drives the sliding block 43 to make a circular motion and enable the eccentric shaft 41 to rotate relative to the sliding block 43; the slide 43 moves to drive the lower working table 31 and the lower cutting die 32 to do circular motion, so that the workpiece on the lower cutting die 32 does circular motion relative to the upper cutting die 22, and the upper cutting die 22 cuts the edge of the workpiece.

S50: after trimming the workpiece, the lower linear driving mechanism 44 drives the rack 42 back to the initial position, so that the lower table 31 returns to the initial position. Specifically, the lower linear driving mechanism 44 drives the rack 42 back to the initial position, so that the lower table 31 and the lower die 32 return to the initial position. Then, the upper linear driving mechanism 23 drives the upper table 21 and the upper cutting die 22 to move upward and return to the initial positions.

S60: the workpiece is removed from the lower die 32. Specifically, the jacking mechanism 40 drives the ejector rod to jack up the trimmed workpiece upwards, and the trimmed workpiece is taken down from the edge trimmer.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A gear shaping edge trimmer characterized in that includes:

a frame;

the lower die assembly comprises a lower workbench arranged on the rack and a lower cutting die fixed above the lower workbench;

the upper die assembly comprises an upper workbench arranged on the rack, an upper cutting die fixed below the upper workbench and an upper linear driving mechanism fixed on the rack; the upper linear driving mechanism is connected with the upper workbench so as to drive the upper workbench to move towards or away from the lower workbench; the vertical projection of the upper cutting die falls onto the lower cutting die, and a cutting edge is arranged between the upper cutting die and the lower cutting die;

the driving assembly comprises an eccentric shaft, a rack, a lower linear driving mechanism and an auxiliary linear driving mechanism; the eccentric shaft is rotatably connected to the rack around the axis of the eccentric shaft, meshing teeth are arranged on the periphery of the eccentric shaft, the rack is matched with the meshing teeth on the eccentric shaft, the eccentric shaft is connected with the lower workbench, the lower linear driving mechanism is provided with a lower driving shaft which can linearly extend and retract along the horizontal direction, and the lower driving shaft is connected with the rack; the auxiliary linear driving mechanism is fixed on the rack and positioned outside the lower workbench, the auxiliary linear driving mechanism is provided with an auxiliary driving shaft which can linearly extend and retract along the horizontal direction, and the auxiliary driving shaft is abutted against the lower workbench and used for driving the lower workbench to horizontally move, so that the upper cutting die collides with a workpiece and breaks a cut on the workpiece; the lower linear driving mechanism drives the rack to move horizontally, the rack drives the meshing teeth to rotate so as to drive the eccentric shaft to rotate along with the meshing teeth, the eccentric shaft rotates to drive the lower workbench to rotate, and the lower cutting die moves along with the lower workbench so as to drive a workpiece on the lower cutting die to move relative to the upper cutting die, so that the upper cutting die cuts the edge of the workpiece.

2. The gear shaping edge trimmer of claim 1 wherein said drive mechanism further includes a slide block, said eccentric shaft having an upper end rotatably connected to said slide block about its axis; the bottom surface of the lower workbench is provided with a sliding groove, the sliding groove extends along the axis direction of a driving shaft of the auxiliary linear driving mechanism, and the sliding block is arranged in the sliding groove and can move along the extending direction of the sliding groove.

3. The gear shaping edge trimmer of claim 2 wherein the drive assembly further includes a resilient return member disposed outside of and coupled to the lower table for returning the lower table after being pushed by the auxiliary linear drive mechanism.

4. The gear shaping edge trimmer of claim 3, wherein the frame has a fixed base with a through hole, the eccentric shaft is mounted in the through hole through a bearing, and a lower end of the eccentric shaft penetrates through the fixed plate.

5. The gear shaping edge trimmer of claim 4, wherein the frame is further provided with a frame, the frame is a hollow structure with an upper opening and a lower opening, and the frame is fixed on the upper surface of the fixed seat; the lower end of the lower workbench is located in the frame, the elastic return piece is located on one side, deviating from the auxiliary linear driving mechanism, of the lower workbench, one end of the elastic return piece is fixed on the frame, and the other end of the elastic return piece is abutted to the lower workbench.

6. The gear shaping edge trimmer of claim 4, wherein the drive assembly further comprises a backing plate and balls, the backing plate defines a mounting hole therein, the balls are disposed in the mounting hole and extend beyond the upper and lower surfaces of the backing plate, the backing plate and the balls are disposed between the fixed base and the lower table such that the balls abut the upper surface of the fixed base and the lower surface of the lower table.

7. The gear shaping edge trimmer of claim 4 wherein the drive assembly further comprises a ram and a jacking mechanism for driving the ram to move vertically; the fixed seat, the lower working table and the lower cutting die are provided with through jacking holes along the vertical direction, and the ejector rod is arranged in the jacking holes and used for jacking the workpiece upwards.

8. The gear shaping edge trimmer of claim 4, wherein the frame further comprises a vertically arranged guide rail and a top plate fixed to the top end of the guide rail, the guide rail is fixed to the upper surface of the fixed base and extends vertically upward, the upper table is movably mounted on the guide rail along the extending direction of the guide rail, the upper linear driving mechanism comprises an upper driving body and an upper driving shaft which can extend and retract along the vertical direction, the upper driving body of the upper linear driving mechanism is fixed to the top plate, and the upper driving shaft of the upper linear driving mechanism is fixed to the upper table.

9. The gear edge trimmer of claim 2, wherein the axis of the secondary drive shaft of the secondary linear drive mechanism is perpendicular to the axis of the lower drive shaft of the lower linear drive mechanism.

10. A method of trimming in a toothed edge trimmer, characterized by providing a toothed edge trimmer according to any one of claims 1-9;

placing and fixing a workpiece on the lower cutting die;

the upper linear driving mechanism drives the upper workbench to vertically move downwards, so that the upper cutting die and the lower cutting die are matched;

the auxiliary linear driving mechanism drives the lower workbench to move horizontally, the lower cutting die moves along with the lower workbench, so that the workpiece on the lower cutting die moves relative to the upper cutting die, and the upper cutting die collides with the workpiece to shear the workpiece to form a crevasse;

the lower linear driving mechanism drives the eccentric shaft to rotate, so that the lower workbench does circular motion relative to the upper cutting die to cut edges of the workpiece.

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