Feeding mechanism of small-modulus worm whirlwind milling machine

Abstract

The utility model provides a small-modulus worm whirlwind milling machine feeding mechanism, and belongs to the technical field of worm machining equipment. The feeding mechanism solves the problems that an existing feeding mechanism is unstable in feeding and poor in matching degree. The feeding mechanism of the small-modulus worm whirlwind milling machine comprises a hopper, the hopper is provided with a material storage groove used for containing workpiece blanks, and a discharging channel is arranged at the bottom of the material storage groove; the lifting mechanism comprises a supporting plate and a first driving part used for driving the supporting plate to ascend and descend, the supporting plate is located on the outer side of the discharging channel, a discharging groove is formed in the supporting plate, and when the supporting plate descends, the discharging groove can contain a workpiece blank rolling down from the discharging groove along the discharging channel; the rotary clamping barrel assembly is located on one side of the hopper and used for fixing the workpiece blank and driving the workpiece blank to rotate; and the mechanical arm assembly is positioned on the other side of the hopper and is used for transferring the workpiece blank from the blanking groove to the rotary clamping barrel assembly. According to the feeding device, all links are matched more accurately, and feeding is more stable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to worm processing equipment technical field relates to a small modulus worm whirlwind milling machine feeding mechanism. BACKGROUND

[0002] The whirlwind milling machine is a kind of special equipment for processing worm, one side clamps workpiece to carry out low-speed feed movement, one side drives cutter high-speed rotation through whirlwind milling head mechanism, and makes the workpiece on cutting thread formation.

[0003] The existing whirlwind milling machine structure is substantially same with the structure in the precision whirlwind milling machine and method for small modulus worm full-automatic processing of Chinese patent application (application number:201710476143.3) disclosed, including machine tool bed mechanism, feeding mechanism assembly, digital control platform assembly, whirlwind milling head mechanism assembly, discharging conveyor belt, hydraulic system mechanism, constant temperature filtration system, oil mist collection system. Wherein, feeding mechanism assembly includes guide rod, guide rail, mechanical clamping arm, horizontal sliding block, vertical sliding block, motor, feeding groove base, feeding module movable plate, feeding module fixed plate, workpiece spindle, oil pressure rotary cylinder clamp, it is lifted to top from bottom in feeding groove through the cooperation of feeding module movable plate up and down movement and feeding module top plate to the workpiece blank to be processed, so that mechanical clamping arm takes feeding. However, since workpiece needs to be lifted from bottom to top through multiple steps of feeding module movable plate and feeding module fixed plate multiple times, and when more workpieces are placed in feeding groove, part of workpieces will directly roll on the step surface on the upper part of feeding module movable plate and feeding module fixed plate, and will interfere with the workpiece that needs to be lifted, sometimes will make the workpiece that needs to be lifted fall or lift multiple workpieces at a time, affect the rhythm when feeding, lead to unable to form synchronous cooperation with mechanical clamping arm. SUMMARY

[0004] The utility model aims at the above-mentioned problems existing in prior art, proposes a kind of small modulus worm whirlwind milling machine feeding mechanism, and the technical problems to be solved by the utility model are as follows: how to improve the feeding stability of whirlwind milling machine.

[0005] The utility model can be realized by the following technical scheme: a kind of small modulus worm whirlwind milling machine feeding mechanism, characterized by comprising:

[0006] Hopper, the hopper has the storage tank for placing workpiece blank, the bottom of the storage tank is equipped with discharge passage;

[0007] Lifting mechanism, including the driving piece one for driving the lifting of the supporting plate, the supporting plate is located on the outside of discharge passage, the supporting plate is opened with the blanking groove, when the supporting plate drops, the blanking groove can accommodate a workpiece blank that rolls from discharge groove along discharge passage;

[0008] A rotating chuck assembly is arranged at one side of the hopper for fixing and rotating the workpiece blank;

[0009] A mechanical arm assembly is arranged at the other side of the hopper for transferring the workpiece blank from the blanking groove to the rotating chuck assembly.

[0010] The utility model discloses a discharge passage is arranged at the bottom of hopper, and sets up the lifting mechanism and cooperates with the discharge passage, when the supporting plate is lowered, the workpiece blank enters the blanking groove through the discharge passage, then the supporting plate moves up and lifts the workpiece blank in the blanking groove, makes the workpiece blank be located between the mechanical arm and the rotating chuck assembly, is convenient for the mechanical arm to snatch and transfer to the rotating chuck and fixes.

[0011] In the small modulus worm whirlwind milling machine feeding mechanism, the bottom plate of the storage groove is inclined, and the discharge passage is located on the side of the bottom plate facing downward, so that the workpiece blank can enter the discharge passage.

[0012] In the small modulus worm whirlwind milling machine feeding mechanism, the blanking groove is a V-shaped groove, and the top of the blanking groove and the side facing the discharge passage are both open, so that the workpiece blank can roll into the blanking groove from the discharge passage.

[0013] In the small modulus worm whirlwind milling machine feeding mechanism, a plurality of accommodation holes are arranged on the blanking groove bottom plate along the width direction of the discharge passage, the lifting mechanism further includes a mounting plate, the mounting plate is located below the blanking groove bottom plate and connected with a driving piece, a plurality of jack rods corresponding to the accommodation holes are arranged on the mounting plate, and the driving piece can drive the mounting plate to move up and down and make the jack rods penetrate through the corresponding accommodation holes and extend into the storage groove. In this way, the supporting plate and the jack rod form synchronous movement, and when the supporting plate moves up and down, the jack rod can extend into the storage groove and push the workpiece blank in the storage groove upward, so that the workpiece blank is shaken, and the workpiece blank is prevented from being stuck.

[0014] In the small modulus worm whirlwind milling machine feeding mechanism, the side wall of the blanking groove and the discharge passage on the opposite side is a material blocking part, the height of the material blocking part is higher than the radius of the workpiece blank, the height of the discharge passage is higher than the diameter of the workpiece blank and smaller than twice the diameter of the workpiece blank, so that the supporting plate can only lift one workpiece blank at a time and prevent too many workpiece blanks from escaping from the discharge passage.

[0015] In the small modulus worm whirlwind milling machine feeding mechanism, the supporting plate includes a base plate and a groove plate, the base plate is fixedly arranged on one side of the mounting plate, the groove plate is detachably connected to the top of the base plate, and the blanking groove is located on the top of the groove plate. In this way, the groove plate of the corresponding size can be replaced according to the workpiece blank of different sizes, so as to ensure the stability of cooperation with the workpiece blank.

[0016] In the small modulus worm whirl milling machine feeding mechanism, the mechanical arm assembly comprises a guide rail, a moving table, a translation driving mechanism and a mechanical clamping arm, the guide rail is arranged transversely, the moving table is in sliding fit with the guide rail, the translation driving mechanism is used for driving the moving table to reciprocate along the guide rail, and the mechanical clamping arm is fixed on the moving table.

[0017] In the small modulus worm whirl milling machine feeding mechanism, the mechanical clamping arm comprises a mounting rod and a pneumatic finger connected to one end of the mounting rod, both parallel clamping fingers of the pneumatic finger are fixedly provided with clamping jaws, and a positioning insertion rod is further fixedly arranged on the pneumatic finger and located between the two clamping jaws.

[0018] Compared with the prior art, the small modulus worm whirl milling machine feeding mechanism has the following advantages:

[0019] 1. The discharge channel is arranged at the bottom of the hopper and cooperates with the lifting mechanism, so that one workpiece blank is lifted from the hopper to the top of the hopper each time, the mechanical arm assembly is convenient to clamp and fix in the rotary clamping cylinder assembly, cooperation of each link is more accurate, and feeding is more stable.

[0020] 2. The positioning insertion rod is arranged between the two clamping jaws on the pneumatic finger of the mechanical clamping arm, so that the mechanical clamping arm can be clamped and fixed by the two clamping jaws after the positioning insertion rod is inserted into the shaft hole of the workpiece blank, workpiece blanks are prevented from loosening, and clamping is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the utility model;

[0022] Figure 2 is a structural schematic view of another view of the utility model;

[0023] Figure 3 is a structural schematic view of the utility model after being cut;

[0024] Figure 4 is a structural schematic view of the hopper cooperating with the lifting mechanism;

[0025] Figure 5 is Figure 3 is a local enlarged view of A part in the utility model;

[0026] Figure 6 is a structural schematic view of the mechanical clamping arm.

[0027] In the diagram, 1. Base; 2. Hopper; 2a. Storage trough; 2b. Discharge channel; 2c. Clearance hole; 21. Mounting part; 22. Guide bar; 3. Rotary clamp assembly; 4. Robotic arm assembly; 41. Fixing plate; 42. Guide rail; 43. Moving table; 44. Mounting frame; 45. Mechanical clamping arm; 451. Pneumatic finger; 452. Gripper; 453. Positioning rod; 454. Mounting rod; 51. Drive component one; 52. Support plate; 52a. Drop trough; 521. Base plate; 522. Slot plate; 53. Mounting plate; 54. Top rod. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] A loading mechanism for a small-module worm gear milling machine, such as Figures 1-5 As shown, the device includes a base 1 and a hopper 2, a rotary clamp assembly 3, and a robotic arm assembly 4 disposed on the base 1. The hopper 2 has a storage trough 2a for placing workpiece blanks, and the hopper 2 is provided with a lifting mechanism for lifting the workpiece blanks upwards. The rotary clamp assembly 3 is located on one side of the hopper 2 and is used to fix the workpiece blanks and drive the workpiece blanks to rotate for cutting by the milling head of the milling machine. The robotic arm assembly 4 is located on the other side of the hopper 2 and is used to transfer the workpiece blanks from the lifting mechanism to the rotary clamp assembly 3 for fixing.

[0030] Specifically, such as Figures 3-5 As shown, the hopper 2 is positioned above the base 1 and between the rotating clamp assembly 3 and the robotic arm assembly 4. The bottom plate of the storage tank 2a is inclined downwards from the front to the rear. The bottom side of the storage tank 2a, which is the rear side of the storage tank 2a, has a discharge channel 2b. The lifting mechanism includes a support plate 52, a mounting plate 53, and a drive component 51. The drive component 51 is mounted on the base 1. In this embodiment, the drive component 51 can be a cylinder, hydraulic cylinder, or other drive component that outputs linear power. The mounting plate 53 is connected to the drive component 51 and is located below the bottom plate of the storage tank 2a. The lower end of the support plate 52 is fixedly connected to one side of the mounting plate 53, so that the support plate 52 is located outside the discharge channel 2b. The top of the support plate 52 is provided with a dropping groove 52a, which is large enough to accommodate only one workpiece blank. When the drive unit 51 drives the pallet 52 to descend, the workpiece blank in the storage tank 2a can enter the discharge tank 52a through the discharge channel 2b; then the drive unit 51 drives the pallet 52 to rise, so that the workpiece blank in the discharge tank 52a is located at the top of the hopper 2, which is convenient for the robotic arm assembly 4 to grip.

[0031] Further, in order to improve the moving precision of the lifting of the supporting plate 52, two vertical guide columns are arranged on the seat body 1, the guide columns are located at the rear side of the hopper 2, and the back of the supporting plate 52 is provided with two sliding seats which are in one-to-one correspondence with the two guide columns and are in sliding fit.

[0032] As shown in Figure 5 , in the embodiment, the two sides of the rear side of the storage tank 2a are respectively provided with mounting portions 21, the mounting portions 21 are arranged in suspension relative to the bottom plate of the storage tank 2a, the mounting portions 21 are respectively and fixedly connected with guide strips 22, the lower ends of the guide strips 22 are bent towards the side of the supporting plate 52, so that the lower ends of the guide strips 22 and the bottom plate of the storage tank 2a form the above-mentioned discharging channel 2b.

[0033] As shown in Figure 5 , the supporting plate 52 is composed of a base plate 521 and a groove plate 522, the groove plate 522 is detachably connected to the top of the base plate 521 through bolts, and the blanking groove 52a is arranged on the top of the groove plate 522, so that the groove plate 522 of the corresponding specification can be replaced according to the size of the workpiece blank, so that the blanking groove 52a is matched with the workpiece blank, and the height of the lifted workpiece blank is basically unchanged, which is convenient for clamping.

[0034] In the embodiment, the blanking groove 52a is a V-shaped groove, the top of the blanking groove 52a and the side facing the discharging channel 2b are both open, the side wall opposite to the discharging channel 2b of the blanking groove 52a is a material blocking portion, the height of the material blocking portion is higher than the radius of the workpiece blank, and the height of the discharging channel 2b is higher than the diameter of the workpiece blank and is smaller than twice the diameter of the workpiece blank, so as to avoid the workpiece blank from running out from between the discharging channel 2b and the supporting plate 52.

[0035] Further, in the embodiment, a plurality of accommodation holes 2c are arranged on the bottom plate of the blanking groove 52a along the width direction of the discharging channel 2b, a plurality of jacks 54 corresponding to the accommodation holes 2c are arranged on the mounting plate 53, and the driving member 51 can drive the mounting plate 53 and the jacks 54 to move up and down. When the supporting plate 52 moves up and down, the jacks 54 can extend into the storage tank 2a to push the workpiece blank, so as to avoid material jamming.

[0036] Further, as shown in Figure 1 , Figure 2As shown, in the embodiment, the mechanical arm assembly 4 comprises a guide rail 42, a moving table 43, a translation driving mechanism and a mechanical clamping arm 45, the rear side of the hopper 2 is provided with a fixed plate 41, the fixed plate 41 is spaced apart from the hopper 2, the guide rail 42 is transversely fixed on the fixed plate 41, in the embodiment, the guide rail 42 is two guide rails arranged in an upper and lower spaced apart mode, the moving table 43 is in sliding fit with the guide rail 42, and the translation driving mechanism is arranged between the moving table 43 and the fixed plate 41, for driving the moving table 43 to reciprocatingly translate along the guide rail 42, in the embodiment, the translation driving mechanism is a screw transmission mechanism driven by a motor, the mechanical clamping arm 45 is transversely fixed on the moving table 43 through a mounting bracket 44, so that the front end of the mechanical clamping arm 45 faces the hopper 2 and the rotary clamping cylinder assembly 3. Figure 6 As shown, the mechanical clamping arm 45 comprises a long rod-shaped mounting rod 454 and a pneumatic finger 451 connected to one end of the mounting rod 454, both parallel clamping fingers of the pneumatic finger 451 are fixedly provided with clamping jaws 452, and a positioning insertion rod 453 is further fixedly provided on the pneumatic finger 451, the positioning insertion rod 453 is in a long rod shape and located between the two clamping jaws 452, in this way, when the workpiece is grabbed, the positioning insertion rod 453 is inserted into the shaft hole of the workpiece blank, and then the two clamping jaws 452 are clamped and fixed, so as to avoid loosening.

[0037] The working process of the utility model is as follows: the workpiece blank to be processed is placed in the storage bin of the hopper 2, the driving part one 51 of the lifting mechanism drives the mounting plate 53 to descend, and the supporting plate 52 and the top rod 54 are synchronously moved downward, the opening of the side part of the blanking groove 52a on the supporting plate 52 is basically flush with the bottom plate of the storage groove 2a, so that a workpiece blank enters the blanking groove 52a on the top of the supporting plate 52, then the supporting plate 52 and the top rod 54 move upward, drive the workpiece blank near the ejection channel 2b to move upward, avoid material jamming, then the mechanical clamping arm 45 in the open state moves towards the workpiece blank, and the positioning insertion rod 453 is inserted into the shaft hole of the workpiece blank, then the lifting mechanism moves downward again to load the workpiece blank and avoid the stroke of the mechanical clamping arm 45, the two clamping jaws 452 of the mechanical clamping arm 45 are closed and fix the workpiece blank, then continue to move forward to place the workpiece blank in the rotary clamping cylinder assembly 3 and fix it, the mechanical clamping arm 45 releases the workpiece blank and returns to the original position, so as to complete one time of feeding.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the range defined by the appended claims.

[0039] Although the terms seat body 1, hopper 2, rotating cartridge assembly 3, robotic arm assembly 4, pneumatic fingers 451 are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is merely for the sake of convenience in describing and explaining the nature of the present application; any interpretation that these terms are to be construed as any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A small module worm whirlwind milling machine feeding mechanism, characterized in that, The utility model relates to a kind of material feeding device, including: Hopper (2), the hopper (2) has the storage bin (2a) for placing workpiece blank, the bottom of the storage bin (2a) is equipped with discharge passage (2b); Lifting mechanism, including support plate (52) and driving piece one (51) for driving support plate (52) up and down, the support plate (52) is located outside discharge passage (2b), the support plate (52) is opened with blanking groove (52a), when the support plate (52) drops, blanking groove (52a) can accommodate one from discharge groove along discharge passage (2b) and roll down workpiece blank; Rotary clamp cylinder assembly (3), located one side of hopper (2), for fixing workpiece blank and driving workpiece blank rotation; Mechanical arm assembly (4), located the other side of hopper (2), for workpiece blank is removed from blanking groove (52a) and is sent to rotary clamp cylinder assembly (3).

2. The low-modulus worm cyclone mill feeding mechanism according to claim 1, characterized in that, The bottom plate of the storage bin (2a) is obliquely arranged, and the discharge passage (2b) is located on the side of the bottom plate facing downward.

3. The low-modulus worm cyclone mill feeding mechanism according to claim 1 or 2, characterized in that, The blanking groove (52a) is a V-shaped groove, and the top of the blanking groove (52a) and the side facing the discharge passage (2b) are both open.

4. The small module worm whirlwind milling machine feeding mechanism according to claim 1 or 2, characterized in that, A plurality of accommodation holes (2c) are arranged on the bottom plate of the blanking groove (52a) along the width direction of the discharge passage (2b), and the lifting mechanism further includes a mounting plate (53) located below the bottom plate of the blanking groove (52a) and connected with the driving piece one (51), the mounting plate (53) is provided with a plurality of top rods (54) corresponding to the accommodation holes (2c), and the driving piece one (51) can drive the mounting plate (53) to move up and down and make the top rods (54) penetrate through the corresponding accommodation holes (2c) and extend into the storage bin.

5. The low-modulus worm cyclone mill feed mechanism of claim 4, wherein, The side wall of the blanking groove (52a) opposite to the discharge passage (2b) is a material blocking portion, the height of the material blocking portion is higher than the radius of the workpiece blank, and the height of the discharge passage (2b) is higher than the diameter of the workpiece blank and smaller than twice the diameter of the workpiece blank.

6. The low-modulus worm cyclone mill feed mechanism of claim 4, wherein, The support plate (52) includes a base plate (521) and a groove plate (522), the base plate (521) is fixed to one side of the mounting plate (53), the groove plate (522) is detachably connected to the top of the base plate (521), and the blanking groove (52a) is located on the top of the groove plate (522).

7. The low-modulus worm cyclone mill feed mechanism of claim 4, wherein, The mechanical arm assembly (4) includes a guide rail (42), a moving table (43), a translation driving mechanism and a mechanical clamping arm (45), the guide rail (42) is transversely arranged, the moving table (43) is in sliding cooperation with the guide rail (42), the translation driving mechanism is used for driving the moving table (43) to reciprocate along the guide rail (42), and the mechanical clamping arm (45) is fixed to the moving table (43).

8. The low-modulus worm cyclone mill feed mechanism of claim 7, wherein, The mechanical clamping arm (45) includes a mounting rod (454) and a pneumatic finger (451) connected to one end of the mounting rod (454), both parallel clamping fingers of the pneumatic finger (451) are fixedly provided with clamping jaws (452), and a positioning insertion rod (453) is further fixedly arranged on the pneumatic finger (451), and the positioning insertion rod (453) is located between the two clamping jaws (452).

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