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CN-224223414-U - Device and machine tool for centering vertex of arc surface

CN224223414UCN 224223414 UCN224223414 UCN 224223414UCN-224223414-U

Abstract

The application discloses a device and a machine tool for aligning a center vertex of an arc surface. The cone piece comprises a tail end and a head end, wherein the tail end of the cone piece is provided with a cone handle which is used for being connected and fixed with a boring bar of a machine tool, a notch part is formed between the head end and the tail end of the cone piece, the head end of the cone piece is provided with a mounting hole along the axis of the cone piece, and the mounting hole penetrates into the notch part from the head end of the cone piece. The dial indicator comprises an indicator body, a sleeve connected with the indicator body and a measuring rod movably mounted in the sleeve, wherein the indicator body of the dial indicator is arranged in the notch, the sleeve penetrates into the mounting hole and is fixed, the measuring rod penetrates out from the head end of the cone, and the axis of the measuring rod is coincident with the axis of the cone. According to the scheme, the center vertex of the arc surface of the revolving body part can be quickly found, a complex measuring tool and a complex measuring step are not needed, the alignment time is saved, and the operation difficulty of workers is reduced.

Inventors

  • ZHANG JUNJIAN
  • GONG FABIN
  • XING JIANGANG
  • SHANG JIN
  • DUAN WENQIANG
  • Tu Rongbo

Assignees

  • 济南二机床集团(德州)产业园有限公司

Dates

Publication Date
20260512
Application Date
20250613

Claims (7)

  1. 1. A device for aligning a center vertex of an arc surface, comprising: The cone piece (1) comprises a tail end and a head end, wherein the tail end of the cone piece (1) is provided with a cone handle (11) which is used for being connected and fixed with a boring bar of a machine tool, a notch part (101) is formed between the head end and the tail end of the cone piece (1), the head end of the cone piece (1) is provided with a mounting hole (102) along the axis of the cone piece, and the mounting hole (102) penetrates into the notch part (101) from the head end of the cone piece (1); The dial indicator (2) comprises an indicator body (21), a sleeve (22) connected with the indicator body (21) and a measuring rod (23) movably mounted in the sleeve (22), wherein the indicator body (21) of the dial indicator (2) is arranged in the notch part (101), the sleeve (22) penetrates into the mounting hole (102) and is fixed, the measuring rod (23) penetrates out from the head end of the cone piece (1), and the axis of the measuring rod (23) coincides with the axis of the cone piece (1).
  2. 2. The arc surface centering vertex device according to claim 1, wherein a threaded hole is formed in a body structure of the head end of the cone member (1) corresponding to the mounting hole (102), the threaded hole penetrates into the mounting hole (102) from the body surface of the head end of the cone member (1), and a screw (3) is assembled in the threaded hole and used for propping up and fixing the sleeve (22) of the dial indicator (2).
  3. 3. The arc surface centering apex device according to claim 1, wherein the cone member (1) is of an integrally formed structure.
  4. 4. The arc surface centering vertex device according to claim 2, wherein the cone member (1) comprises a cone (12) and the taper shank (11) removably connected to a rear end of the cone (12).
  5. 5. The arc surface centering vertex device according to claim 4, wherein a connecting stud (121) is arranged at one end of the cone (12) facing the cone shank (11), a threaded hole (111) is arranged at one end of the cone shank (11) facing the cone (12), and the cone shank (11) and the cone (12) are integrally connected with the connecting stud (121) through the threaded hole (111).
  6. 6. The arc surface centering vertex device according to claim 4, wherein said cone member (1) further comprises a head portion (13) removably connected to a head end of said cone (12); The notch part (101) is arranged on the cone (12), a through hole (122) is formed in the head end of the cone (12), and an internal thread is formed in the inner wall of the through hole (122); The center of the head (13) is provided with the mounting hole (102), the periphery of the head (13) is provided with external threads, and the external threads of the head (13) are matched with the internal threads of the through hole (122); The head (13) is provided with the threaded hole and is provided with the screw (3).
  7. 7. A machine tool, characterized by comprising the arc surface centering center vertex device according to any one of claims 1 to 6, and further comprising a tool mounting portion (5); The taper shank (11) of the arc surface centering center vertex device is detachably mounted on the cutter mounting part (5).

Description

Device and machine tool for centering vertex of arc surface Technical Field The application relates to the technical field of measurement of arc surfaces of parts, in particular to a device for aligning an arc surface to a center and a vertex and a machine tool. Background In the field of machining, certain parts of revolution, such as shafts, cylinders, are often encountered. These parts require machining screw holes in the circular arc surface or machining key grooves in the outer circumferential direction of the shaft. In order to find the center of a positive workpiece when a screw hole or a key groove is machined, a traditional method is to suck a dial indicator onto a boring bar, rotate the boring bar, touch arc surfaces on two sides of the workpiece through the dial indicator, and find the center of the top point of an outer circle by using the method. The method is time-consuming, labor-consuming and inaccurate, and is more inconvenient and inaccurate in marking the dial indicator for workpieces with larger excircles and heights. Disclosure of utility model The application aims to provide a device and a machine tool for aligning the center vertex of an arc surface, which can rapidly find the center vertex of the arc surface of a revolving body part, do not need complex measuring tools and measuring steps, save alignment time and lighten the operation difficulty of workers. In a first aspect, the present application provides a device for aligning a center vertex of an arc surface, including a cone member and a dial indicator. The cone piece comprises a tail end and a head end, wherein the tail end of the cone piece is provided with a cone handle which is used for being connected and fixed with a boring bar of a machine tool, a notch part is arranged between the head end and the tail end of the cone piece, the head end of the cone piece is provided with a mounting hole along the axis of the cone piece, and the mounting hole penetrates into the notch part from the head end of the cone piece. The dial indicator comprises an indicator body, a sleeve connected with the indicator body and a measuring rod movably mounted in the sleeve, wherein the indicator body of the dial indicator is arranged in the notch, the sleeve penetrates into the mounting hole and is fixed, the measuring rod penetrates out of the head end of the cone, and the axis of the measuring rod coincides with the axis of the cone. In one implementation scheme, a threaded hole is formed in the body structure of the head end of the cone piece, corresponding to the mounting hole, the threaded hole penetrates through the mounting hole from the body surface of the head end of the cone piece, and a screw is assembled in the threaded hole and used for propping up and fixing the sleeve of the dial indicator. In one embodiment, the cone member is a unitary molded structure. In one embodiment, the cone member includes a cone and the shank is removably connected to the cone end. In one implementation scheme, a connecting stud is arranged at one end of the cone, which faces the taper shank, a threaded hole is arranged at one end of the taper shank, which faces the cone, and the taper shank and the cone are connected into a whole through the matching of the threaded hole and the connecting stud. In one embodiment, the cone member further includes a head removably connected to the cone head end; The notch part is arranged on the cone, a through hole is formed in the head end of the cone, and internal threads are formed in the inner wall of the through hole; the center of the head is provided with the mounting hole, the periphery of the head is provided with external threads, and the external threads of the head are matched with the internal threads of the through hole; The head is provided with the threaded hole and is provided with the screw. In a second aspect, the application further provides a machine tool, which comprises the arc surface centering center vertex device and a tool mounting part; The taper shank of the arc surface centering vertex device is detachably arranged on the cutter mounting part. Compared with the prior art, the application has the advantages that when the arc surface centering vertex device is used, the dial indicator and the cone piece are assembled, then the cone handle of the cone piece is arranged on the tool mounting part of the machine tool, the end part of the measuring rod of the dial indicator is tightly attached to the arc surface of a workpiece, the measuring rod end part of the dial indicator moves along the arc surface when the machine tool moves left and right, the maximum or minimum value displayed by the dial indicator is the center vertex of the arc surface of the revolving body part, the axis of the tool mounting part of the axis of the machine tool is kept motionless after the center vertex is found, the axis of the tool mounting part of the axis of the machine tool is kept motionless, the tool mounting par