Center-adjustable anti-backlash cutter bar and machining center

A tool holder and anti-backlash technology, used in metal processing equipment, metal processing mechanical parts, manufacturing tools, etc., can solve the problems of easy radial jump to out of tolerance, inability to adjust, etc., and to solve the problem of radial jump to out of tolerance. , the effect of eliminating gaps and meeting processing requirements

Pending Publication Date: 2022-08-02
BEIJING NINGHUA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an adjustable center backlash-removing cutter bar and a machining center, which can eliminate the clearance fit between the cutter and the cutter bar when they are installed, and can eliminate the influence of the clearance fit on the machining accuracy of the radial runout of the cutter , to achieve concentricity adjustment, to solve the problem that the existing hydraulic expansion sleeves are prone to radial jumps to out-of-tolerance, and cannot be adjusted after out-of-tolerance

Method used

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  • Center-adjustable anti-backlash cutter bar and machining center
  • Center-adjustable anti-backlash cutter bar and machining center
  • Center-adjustable anti-backlash cutter bar and machining center

Examples

Experimental program
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Effect test

Embodiment 1

[0043] like Figure 1 to Figure 9As shown, this embodiment provides an adjustable center backlash anti-backlash cutter bar 100, which mainly includes a cutter bar tail shank 1, a micro-expansion sleeve 3, an alignment component and an anti-backlash component. In order to connect the machine tool, the center of the second end face of the shank 1 is provided with an aligning shaft 2 coaxial with the shank 1; the inner wall surface of the micro-expansion sleeve 3 is a conical inner wall surface, and the inner The large end is located at the first end of the micro-expansion sleeve 3, the small end is located at the second end of the micro-expansion sleeve 3, and the outer wall of the micro-expansion sleeve 3 is used to sleeve the tool to be processed; A plurality of slits 4 extending along the axial direction of the micro-expansion sleeve 3 are provided on the side wall of one end, and the plurality of slits 4 are evenly distributed along the circumferential interval of the micro-...

Embodiment 2

[0054] This embodiment proposes a machining center, which includes a machine tool, a pressure block 15 and the adjustable center anti-backlash tool bar 100 as described in the first embodiment. The first end of the tool bar tail shank 1 is connected to the machine tool, and the pressure block 15 is connected to the The second end of the connecting shaft 8 is used for pressing the tool to be processed which is sleeved on the outer periphery of the micro-expansion sleeve 3 . like figure 1 As shown, the pressing block 15 is preferably an indexing head pressing plate, which is connected to the second end of the connecting shaft 8 , that is, the head of the connecting shaft 8 through bolts.

[0055] In this embodiment, it also includes an inspection tool 16 that can be sleeved on the outside of the micro-expansion sleeve 3. The inspection tool 16 can be a conventional reducing sleeve (or called a "check tool sleeve"). Before expanding the shaft sleeve 3 , an inspection tool 16 can...

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Abstract

The center-adjustable anti-backlash cutter bar comprises a cutter bar tail handle, a micro-expansion shaft sleeve, a center adjusting assembly and an anti-backlash assembly, the first end of the micro-expansion shaft sleeve is divided into a plurality of petals in the circumferential direction to form an expansion part, and the inner wall of the micro-expansion shaft sleeve is arranged to be a conical inner wall face; a taper sleeve matched with the taper of the conical inner wall face is arranged in an inner cavity of the micro-expansion shaft sleeve and connected to a connecting shaft, and the connecting shaft is adjusted to move towards the small end of the conical inner wall face, so that the taper sleeve extrudes the expansion part of the micro-expansion shaft sleeve, and radial uniform expansion of the expansion part is achieved. The aligning assembly adjusts the concentricity between the micro-expansion shaft sleeve and the cutter bar tail handle by adjusting the abutting pressure between different jackscrews and the aligning shaft, the defect that adjustment cannot be carried out after radial jumping to be out of tolerance is overcome, and the machining precision of the cutter is further guaranteed. The invention further discloses a machining center with the center-adjustable anti-backlash cutter bar.

Description

technical field [0001] The invention belongs to the field of electric spark discharge machining, and relates to a functional component of an electric spark tool sharpening machine, in particular to a center-adjustable anti-backlash cutter bar and a machining center. Background technique [0002] Polycrystalline diamond helical cutters and polycrystalline diamond corn knives are tire-like cutters whose teeth are made of polycrystalline diamond composite sheets. Due to the high hardness of polycrystalline diamond, the use of electric spark discharge gradually shows its advantages in the processing process. , the tool needs to be installed on the machining tool holder of the machine tool through the tool mounting hole. Because the polycrystalline diamond screw cutter requires high machining accuracy, it puts forward higher requirements for the installation of the screw cutter during processing. [0003] The process of traditional EDM machining tools is as follows: the tool is i...

Claims

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Application Information

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IPC IPC(8): B23B29/00B23Q11/00B23Q17/00
CPCB23B29/00B23Q11/00B23Q17/00
Inventor黄水利张富强郑利强韩飞黄海杰罗增齐张元彪刘燕萍
OwnerBEIJING NINGHUA TECH