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CN-224222798-U - Cutter for processing tail of shaft head

CN224222798UCN 224222798 UCN224222798 UCN 224222798UCN-224222798-U

Abstract

The utility model provides a cutter is used in processing of spindle nose afterbody, includes the cutter body of cylindricality, and the tail end of cutter body is equipped with the coaxial handle of a knife that corresponds, and the top of cutter body is equipped with the coaxial tool bit that corresponds, cutter body, tool bit and handle of a knife three integrated into one piece, wherein be equipped with on the preceding lateral wall of handle of a knife and be on a parallel with its axis, and the tail end extends all the way to the side plane of handle of a knife tail face, and the top of tool bit is equipped with a plurality of steps that correspond with spindle nose afterbody shoulder hole, all is equipped with the blade that corresponds on every step. The utility model realizes one-step molding of the step hole processing, reduces the step hole processing procedures, and improves the precision and quality of the step hole processing.

Inventors

  • LIANG SHUANG
  • XUE HUIZHEN
  • YANG YONG

Assignees

  • 山西中晋工业制造股份有限公司

Dates

Publication Date
20260512
Application Date
20250520

Claims (7)

  1. 1. The utility model provides a cutter is used in processing of spindle nose afterbody, its characterized in that, it includes cylindricality cutter body (2), the tail end of cutter body (2) is equipped with coaxial handle of a knife (3) that corresponds, the top of cutter body (2) is equipped with coaxial tool bit (1) that corresponds, cutter body (2), tool bit (1) and handle of a knife (3) three integrated into one piece, be equipped with on the preceding lateral wall of handle of a knife (3) and be on a parallel with its axis, and the tail end extends all the way to the side plane of handle of a knife (3) tail face, the top of tool bit (1) is equipped with a plurality of cutting steps that correspond with spindle nose (4) afterbody shoulder hole, all be equipped with the blade that corresponds on every cutting step.
  2. 2. The cutter for machining the tail of the shaft head according to claim 1, wherein the stepped hole at the tail of the shaft head (4) comprises three hole steps which are coaxial, namely an inner hole (41), an outer hole (42) and a chamfering hole (43), the steps on the cutter head (1) comprise a first step (11), a second step (12) and a third step (13) which are sequentially arranged from the top end of the cutter head (1) to the tail of the cutter head and coaxially correspond to each other, the three steps sequentially correspond to the inner hole (41), the outer hole (42) and the chamfering hole (43) of the stepped hole, the cutting edge corresponding to each step is arranged on the top surface of the stepped hole, and the radial size radiated by the cutting edge on each step is larger than the radial size of the step surface of the stepped hole and is equal to the radial step surface size of the corresponding step.
  3. 3. The tool for machining the tail of the shaft head according to claim 2, wherein the cutting edge comprises a top edge (5) arranged on the top surface of the first cutter blade (11), a middle edge (51) arranged on the top surface of the second cutter blade (12) and a tail edge (52) arranged on the top surface of the third cutter blade (13), two corresponding inner grooves are arranged on two opposite sides on the side wall of the tool head (1), the top ends of the inner grooves penetrate through the top surface of the tool head (1), the tail ends extend to the middle part of the third cutter blade (13), the two inner grooves divide the corresponding end of the tool head (1) into two opposite fixed blocks in the radial direction along the circumferential direction, the two fixed blocks are correspondingly connected at the axis of the tool head (1), at least one side surface of each fixed block is a mounting surface, the cutting edge is arranged at the joint of the mounting surface and the top end side of the corresponding cutter blade along the axial direction.
  4. 4. A tool for machining a tail of a shaft head according to claim 3, wherein the inner groove comprises a first groove (14) positioned at the rear side of the upper end of the tool bit (1) and a second groove (15) positioned at the front side of the lower end of the tool bit (1), wherein the fixed block at the front side of the first groove (14) is a first fixed block (16), the surface corresponding to the first groove (14) on the first fixed block (16) is a first mounting surface (18), the fixed block at the rear side of the second groove (15) is a second fixed block (17), the surface corresponding to the second groove (15) on the second fixed block (17) is a second mounting surface (19), a plurality of mounting grooves corresponding to each knife step are respectively arranged on the first mounting surface (18) and the second mounting surface (19), a knife blade which is detachably and fixedly mounted is arranged in each mounting groove, and the junction of the mounting surface and the step surface of the knife edge of the corresponding knife blade is the tool bit (1).
  5. 5. The tool for machining the tail of the spindle nose according to claim 4, wherein the upper surface of the portion of the second fixing block (17) corresponding to the first blade stage (11) is an inclined surface which is gradually inclined downwards from the tail to the top end thereof along the first mounting surface (18) and the top end of which is lower than the axis of the tool bit (1), the mounting groove comprises a first groove, a second groove, a third groove, a fourth groove and a fifth groove, wherein the first groove is arranged at the lower end of the top end side of the first mounting surface (18), the inner mounting blade is a top core blade (53), the second groove is arranged at the top end of the second mounting surface (19), the inner mounting blade is a top peripheral blade (54), the top peripheral blade (54) and the cutting edge of the top peripheral blade (54) form a complete top edge (5), the third groove is arranged on the first blade (18) corresponding to the second blade stage (12), the inner mounting blade is a middle blade (55), the fourth groove is arranged on the second blade (19) corresponding to the second blade stage (12), the inner mounting blade is a middle blade (56) and the inner cutting edge (57) is a cutting edge (57) corresponding to the middle blade (56) of the second blade (56), and the inner blade (57) is a cutting edge (57) of the middle blade (56) is arranged on the second mounting surface (57).
  6. 6. A tool for machining a tail of a shaft head according to claim 3, wherein the inner side end of the outer hole (42) is provided with a coaxial corresponding transition step (44), two ends of the transition step (44) are respectively and correspondingly connected with the inner end of the outer hole (42) and the outer end of the inner hole (41), the side wall of the transition step is in a horn shape with an included angle of 60 degrees from inside to outside and gradually away from the axis, and the middle blade (51) corresponding to the outer hole (42) is in an inclined shape corresponding to the transition step (44) and with an included angle of 60 degrees from the top end to the tail end and gradually away from the axis of the tool bit (1).
  7. 7. A tool for machining the tail of a shaft head according to claim 3, characterized in that the side wall of the chamfer hole (43) has an angle of 45 degrees with the axis thereof, and the corresponding tail edge (52) is inclined from the top end to the tail end at an angle of 45 degrees gradually away from the axis of the tool head (1).

Description

Cutter for processing tail of shaft head Technical Field The utility model belongs to the technical field of drilling tools for machining, and particularly relates to a composite drilling tool for machining stepped opposite holes at the tail of a shaft head. Background The axle head is a key part of the front axle connecting knuckle, which belongs to a special-shaped piece, and the customer designs a stepped hole at the tail part of the axle head for the system rigidity of the whole axle. The stepped hole contains multiple levels of aperture changes, and using traditional processing cutter, not only processing procedure is more loaded down with trivial details, needs to change multiple different cutters according to different apertures, and frequent tool changing can increase positioning error, and when meetting the processing of minor diameter section deep department moreover, the draw ratio of required cutter increases, very easily causes vibration, beat in the course of working to cause aperture out of tolerance or surface roughness. Therefore, the traditional cutter is used, and the precision and the quality of the stepped hole can be influenced by the generation of larger positioning errors and vibration deviations, so that the difficulty and the cost of shaft head machining are increased as a whole. Disclosure of utility model The utility model aims to provide a special composite drilling tool for machining a stepped opposite hole at the tail part of a shaft head, which aims to solve the technical problem that the traditional machining tool has great influence on the precision of the stepped hole of the shaft head during machining. In order to achieve the above purpose, the specific technical scheme of the utility model is as follows: The utility model provides a cutter is used in processing of spindle nose afterbody, includes the cutter body of cylindricality, and the tail end of cutter body is equipped with the coaxial handle of a knife that corresponds, and the top of cutter body is equipped with the coaxial tool bit that corresponds, cutter body, tool bit and handle of a knife three integrated into one piece, wherein be equipped with on the preceding lateral wall of handle of a knife and be on a parallel with its axis, and the tail end extends all the way to the side plane of handle of a knife tail face, and the top of tool bit is equipped with a plurality of steps that correspond with spindle nose afterbody shoulder hole, all is equipped with the blade that corresponds on every step. Further, the shoulder hole of spindle nose afterbody includes three hole orders of coaxial hole, outer hole and chamfer hole, and the sword order on the cutter head includes from the top of tool bit to its afterbody arrange in proper order, and coaxial corresponding first sword order, second sword order and third sword order, and three sword orders correspond in proper order with the hole of shoulder hole, outer hole and chamfer hole, and the blade that every sword order corresponds all is established on its top surface, and the radial size that the blade radiated on every section sword order all is greater than the radial size of its step face, and equals with the radial step face size of corresponding hole order. Further, the blade includes the top edge of establishing on first blade top surface, establish the well sword on second blade top surface and establish the tail sword on third blade top surface, opposite both sides are equipped with two corresponding inner grooves on the lateral wall of tool bit, the top of inner groove link up to on the top surface of tool bit, the tail end extends to the middle part of third blade, two inner grooves radially cut apart into two relative fixed blocks with the corresponding end of tool bit along the circumferencial direction, two fixed blocks correspond in the axle center department of tool bit and connect, all have no less than a side as the installation face on every fixed block, the blade is established in the junction of installation face and corresponding blade top surface, and its top side that corresponds the blade along the axial stretches out. Further, the inner groove comprises a first groove positioned at the rear side of the upper end of the cutter head and a second groove positioned at the front side of the lower end of the cutter head, wherein the fixed block at the front side of the first groove is a first fixed block, the surface corresponding to the first groove on the first fixed block is a mounting surface of the first fixed block, the surface corresponding to the first groove is a first mounting surface, the fixed block at the rear side of the second groove is a second fixed block, the surface corresponding to the second groove on the second fixed block is a second mounting surface, a plurality of mounting grooves corresponding to each cutter step are formed in the first mounting surface and the second mounting surface, a cutter blade of the cutter blade