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CN-224209168-U - Rotary disc type needle shaft grooving machine

CN224209168UCN 224209168 UCN224209168 UCN 224209168UCN-224209168-U

Abstract

The utility model provides a rotary table type needle shaft grooving machine, which comprises a vertical rotating disc, grooving cutters, an ejection mechanism and an elastic buffer piece, wherein the rotating disc is uniformly and alternately distributed with bearing grooves and arc rolling surfaces on the circumferential surface, the grooving cutters are arranged in front of the rotating disc, the cutting edges face the circumferential surface of the rotating disc, the ejection mechanism ejects needle shafts in the bearing grooves to be transferred to the arc rolling surfaces when the rotating disc sequentially rotates each bearing groove to the position of the inlet end of the cutting edge of the grooving cutter, the elastic buffer piece is arranged on the outer side of the circumferential surface of the rotating disc and is close to the position of the inlet end of the cutting edge of the grooving cutter, and the elastic buffer piece is provided with a blocking surface which is closer to the circumferential surface of the rotating disc than the cutting edge. The utility model has the advantages that the cutting edge of the slotting cutter can not be impacted and broken when the needle shaft is ejected, and is beneficial to prolonging the practical service life of the slotting cutter.

Inventors

  • ZHU JIANWEN
  • ZHU ZHIYUAN

Assignees

  • 镇江市立诺电子有限公司

Dates

Publication Date
20260508
Application Date
20250304

Claims (10)

  1. 1. The utility model provides a carousel formula needle shaft groover, its characterized in that includes equidistant interval on the periphery has the carousel that erects of accepting groove and circular arc rolling surface, locates the circular arc blade in the place ahead of carousel is towards the fluting cutter of the periphery of carousel, and the carousel will accept the inslot needle shaft ejecting in order to shift to when the groove rotates to in proper order the blade entry end position of fluting cutter the ejection mechanism of accepting groove, still include locate the outside of the periphery of carousel and be close to the entry end position of the blade of fluting cutter, elastic buffer has and compares the blade is more close to the barrier surface of the periphery of carousel.
  2. 2. The rotary disk type needle shaft grooving machine according to claim 1, wherein said elastic buffer member includes a flapper facing a circumferential surface of said rotary disk and an elastic support provided at a back of said flapper.
  3. 3. The rotary table type needle shaft grooving machine according to claim 2, wherein the elastic support comprises a support column, a rod sleeve fixed at the top end of the support column, and a push rod and a support spring which are arranged in the rod sleeve, one end of the push rod extends out of the opening end of the rod sleeve and is connected to the movable baffle, one end of the support spring abuts against the other end of the push rod, and the other end of the support spring abuts against the closed end of the rod sleeve.
  4. 4. The rotary table type needle shaft grooving machine according to claim 3, wherein the ejection mechanism comprises a top plate with an elastic telescopic function arranged at the bottom of each receiving groove and a blocking piece arranged beside the rotary table and opposite to the inlet end of the circular arc cutting edge and used for abutting against the top plate to extend.
  5. 5. The rotary disk type needle shaft grooving machine according to claim 1, wherein the grooving cutter has two blades, and the grooving cutter is arranged in front of the circumferential surface of the rotating disk and is arranged at intervals side by side and near the inner sides of the left and right edges of the circumferential surface.
  6. 6. The rotary disk type needle shaft grooving machine according to claim 1 or 5, wherein the grooving cutter has a thickness of 0.6-1.0mm, and the length of the circular arc cutting edge is 2-4 times the circumference of the needle shaft to be machined.
  7. 7. The rotary table type needle shaft grooving machine according to claim 2, wherein a blocking piece for blocking the needle shaft in the receiving groove from escaping is further arranged above the movable baffle plate on the outer side of the circumferential surface of the rotary table, and the upper end of the movable baffle plate is hinged to the lower end of the blocking piece.
  8. 8. The rotary table type needle shaft grooving machine according to claim 4, wherein a cavity which axially penetrates through the rotary table and is communicated with the bearing groove through a through hole is formed in the rotary table and is located on the inner side of the bearing groove, and the top plate is located in the through hole and is provided with a contact block which is located in the cavity and protrudes out of the end face of the rotary table and can be contacted with the blocking block.
  9. 9. The rotary needle shaft grooving machine according to claim 4 or 8, wherein the blocking piece is a round roller.
  10. 10. The rotary disk type needle shaft grooving machine according to claim 1, further comprising a cutter adjusting mechanism for adjusting a grooving clearance.

Description

Rotary disc type needle shaft grooving machine Technical Field The utility model relates to a needle shaft of a miniature motor gear, relates to processing equipment of the needle shaft, and particularly relates to a rotary disc type needle shaft grooving machine. Background In the miniature motor, the needle shaft is required to support the miniature gear inside, and in order to realize the installation and positioning of the needle shaft on the shell and prevent axial movement, annular grooves are required to be formed in the peripheral surfaces of the two ends of the needle shaft. The current needle shaft used in the micro motor is shown in fig. 1, the diameter of the needle shaft 1 ranges from 1.0 mm to 3.0mm, the length ranges from 6.4 mm to 25.0mm, the width of the groove 1a ranges from 0.05 mm to 0.5mm, and the depth ranges from 0.01 mm to 0.2mm according to different specifications. Therefore, the needle shaft belongs to a tiny precise part, and the difficulty in machining annular grooves at the two ends of the needle shaft is high. In the prior art, a disc milling cutter is used to machine grooves at two ends of a needle shaft. As shown in fig. 2, the disc cutter distributes teeth 11 circumferentially at the edge of the disc 10. By rotation of the disc 11, annular grooves are machined around the needle shaft with the teeth 11. However, in the actual machining process, it was found that only a needle shaft having a relatively low hardness can be machined by a disc cutter, but for a needle shaft having a relatively high hardness such as stainless steel, teeth are easily broken by machining by a disc cutter. The applicant has developed a rotary-disc type needle shaft grooving machine in which a rolling surface on a rotating disc presses a needle shaft to roll on a long cutting edge of a thick sheet cutter to groove an arc-shaped groove, and since the rolling surface can apply a large pressing force, and a thick sheet cutter with a long cutting edge is used, a ring-shaped groove can be machined even for a needle shaft with high hardness, but in such a grooving machine, when the needle shaft enters an inlet end of a cutting edge of the cutter, the needle shaft needs to be ejected from a receiving groove of the rotating disc, and the ejected needle shaft can impact the cutting edge of the cutter, and sudden impact force can cause the cutting edge to be broken and damaged. Disclosure of utility model The utility model aims to solve the technical problem of providing a rotary table type needle shaft grooving machine which can not impact and collapse the cutting edge of a grooving cutter when a needle shaft is ejected so as to overcome the defects in the prior art. In order to solve the technical problems, the utility model adopts the following technical scheme: The utility model provides a carousel formula needle shaft groover, includes equidistant interval distribution has on the periphery and holds groove and the upright rolling disc of circular arc rolling surface, locates the circular arc blade in the place ahead of rolling disc is towards the fluting cutter of the periphery of rolling disc, and the rolling disc will each accept the inslot will accept the needle shaft ejection in the groove in order to shift to when the blade entry end position of fluting cutter is rotated in proper order the ejection mechanism of circular arc rolling surface, still include locate the outside of the periphery of rolling disc and be close to the elastic buffer part of the entry end position of the blade of fluting cutter, the elastic buffer part has and compares the blade is closer to the blocking surface of the periphery of rolling disc. By adopting the technical scheme, the elastic buffer piece is arranged at the position of the inlet end, which is close to the cutting edge of the slotting cutter, of the outer side of the circumferential surface of the rotating disc, and the blocking surface of the elastic buffer piece is required to be closer to the circumferential surface of the rotating disc than the cutting edge. Therefore, when the ejection mechanism ejects the needle shaft from the receiving groove, the needle shaft firstly impacts the blocking surface of the elastic buffer piece. The elastic buffer piece firstly has an elastic blocking force on the ejected needle shaft, then under the ejection action of the ejection mechanism, the needle shaft can be contacted with the cutting edge of the slotting cutter, so that the impact of the ejected needle shaft on the cutting edge of the cutter is reduced, and the cutting edge of the slotting cutter can be prevented from being broken so as to prolong the service life of the cutter. In a specific embodiment of the present utility model, the elastic buffer member includes a flapper facing the circumferential surface of the rotating disk and an elastic support provided at the back of the flapper. In a specific embodiment of the utility model, the elastic support comprises a