CN212399000U

CN212399000U - Cradle type five-axis machine tool geometric accuracy alignment structure

Info

Publication number: CN212399000U
Application number: CN202022047757.XU
Authority: CN
Inventors: 李三; 康军
Original assignee: Neway Cnc Equipment Suzhou Co ltd
Current assignee: Neway Cnc Equipment Suzhou Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-01-26
Anticipated expiration: 2030-09-17

Abstract

The utility model discloses a cradle type five-axis machine tool geometric accuracy alignment structure, including workstation and indicator, cradle type five-axis machine tool geometric accuracy alignment structure is still including examining the stick subassembly, examine the stick subassembly and include two supports and examine the stick, examine the stick and install between two supports, two supports are fixed in the workstation respectively, the level of examining the stick is the same with the A axle axis level of lathe, it includes positive generating line and side bus to examine the stick, during the use with examining stick simulation A axle axis, will originally inspect A axle and Y axle, the straightness that hangs down of A axle and Z axle axis, convert the requirement of inspection A axle and X axle depth of parallelism into, detect positive generating line and the side bus of examining the stick, the indicator maximum difference is the depth of parallelism in XY plane and XZ plane respectively for A axle axis and X axle axis, and is easy to operate, and the error is little.

Description

Cradle type five-axis machine tool geometric accuracy alignment structure

Technical Field

The utility model relates to a lathe geometric accuracy alignment especially relates to a cradle formula five-axis machine tool geometric accuracy alignment structure.

Background

The geometric accuracy of the cradle type five-axis machine tool needs to meet the requirement of the geometric accuracy in the national standard GB/T34880.2. The measurement of the geometric accuracy of the cradle type five-axis machine tool respectively verifies the verticality between the rotation axis A and the axis motion of the Y axis and the verticality between the rotation axis A and the axis motion of the Z axis. The tolerance requirement is 0.015/300 (mm).

The schematic diagram of the geometry precision correction structure of the cradle type five-axis machine tool in the prior art is shown in the attached figure 1, and the use method is as follows:

1) the straightness that hangs down between axis of rotation A and the motion of Y axle axis, inspection tool: a square box 200 and an indicator 40;

the worktable 20 is placed in a horizontal position, a measuring surface of the square box 200 is placed on the worktable 20 in parallel with the Y axis, the indicator 40 is fixed at a fixed part of the machine tool, the side head of the indicator touches one measuring surface of the square box 200 in parallel with the Y axis, the A axis is slowly rotated, the square box 200 is adjusted to enable the measuring surface to be vertical to the A axis, and the square box 200 is fixed on the worktable 20. The Y-axis measurement is shifted and the error is indicated by the maximum difference of 40 degrees.

2) Perpendicularity between the axis motion of the rotating shaft line A and the axis motion of the Z shaft line, and a testing tool: a rectangular square and indicator 40;

the method comprises the steps of placing a workbench 20 in a horizontal position, placing a measuring surface of a rectangular angle square on the workbench 20 in a manner of being parallel to a Y axis, fixing an indicator 40 at a fixed position of a machine tool, enabling a measuring head to touch a measuring surface of the rectangular angle square in a manner of being parallel to the Y axis, slowly rotating an A axis, adjusting the measuring surface of the rectangular angle square to be perpendicular to the A axis, fixing the rectangular angle square on the workbench 20, fixing the indicator 40 on the Z axis, enabling the measuring head to touch a measuring surface of the rectangular angle square in a manner of being parallel to the Y axis, moving the Z axis for measurement, and enabling an error to be a maximum difference value of degrees of the.

The cradle type five-axis machine tool geometric accuracy correction structure has the following disadvantages:

1. the square box 200 is heavy, the carrying operation is troublesome, the position adjustment on the worktable 20 is inconvenient, and the operation time is long.

2. The square box 200 is fixed on the workbench 20 and is not easy to realize, when the A shaft rotates to 90 degrees, the box body and the rotary table are in a cantilever structure, the deformation exists, and the calibration error is increased.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a cradle type five-axis machine tool geometric accuracy alignment structure with simple operation and small error.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

the utility model provides a cradle type five-axis machine tool geometric accuracy alignment structure, includes workstation and indicator, cradle type five-axis machine tool geometric accuracy alignment structure still includes examines excellent subassembly, examine excellent subassembly and include two supports and examine the stick, examine the stick and install in two between the support, two the support is fixed in respectively the workstation, it is the same with the A axle axis level of lathe to examine the level of stick, it includes positive generating line and side generating line to examine the stick.

Further, the indicator is a dial indicator.

Further, examine excellent subassembly still includes adjusting screw, the support includes the installation department, the installation department is equipped with mounting hole and regulation hole, the regulation hole with the mounting hole intercommunication, the axis of regulation hole with the axis of mounting hole is perpendicular, examine excellent tip and be located in the mounting hole, adjusting screw install in the regulation hole and with examine the stick and contradict.

Furthermore, the number of the adjusting holes is four, and the four adjusting holes are respectively located on the upper side, the lower side, the left side and the right side of the installation part to adjust and fix the detection rod up, down, left and right.

Further, the support still includes the fixed part, the fixed part is equipped with the fixed slot, examine excellent subassembly still includes set screw and nut, the workstation is equipped with the mounting groove, set screw stretches into the fixed slot with nut cooperation in the mounting groove makes the support is fixed in the workstation.

Furthermore, the section of the mounting groove is trapezoidal, and the section of the nut corresponding to the mounting groove is also trapezoidal.

Compared with the prior art, the utility model discloses cradle type five-axis machine tool geometric accuracy alignment structure still includes examines excellent subassembly, examine excellent subassembly and include two supports and examine the stick, examine the stick and install between two supports, two supports are fixed in the workstation respectively, the level of examining the stick is the same with the A axle axis level of lathe, it includes positive generating line and side generating line to examine the stick, with examining excellent simulation A axle axis during the use, will examine the straightness that hangs down of A axle and Y axle, A axle and Z axle axis originally, convert the requirement of examining A axle and X axle depth of parallelism into, easy operation, the error is little.

Drawings

FIG. 1 is a schematic diagram of a geometry precision alignment structure of a cradle type five-axis machine tool in the prior art;

FIG. 2 is a schematic diagram of the geometric accuracy alignment structure of the cradle type five-axis machine tool of the present invention;

FIG. 3 is a perspective view of a geometric precision alignment structure of the cradle type five-axis machine tool of FIG. 2;

FIG. 4 is a perspective view of a bar checking assembly of the cradle five-axis machine tool geometric accuracy alignment structure of FIG. 3;

FIG. 5 is a front view of the dipstick assembly of FIG. 4;

FIG. 6 is a perspective view of a holder of the dipstick assembly of FIG. 4;

fig. 7 is a flow chart of the usage of the cradle type five-axis machine tool geometric accuracy alignment structure of the present invention.

In the figure: 10. a cradle with a table; 20. a work table; 21. mounting grooves; 30. a rod checking assembly; 31. a support; 310. an installation part; 3101. mounting holes; 3102. an adjustment hole; 311. a connecting portion; 312. a fixed part; 3120. fixing grooves; 32. detecting a rod; 33. adjusting the screw; 34. a set screw; 35. a nut; 40. an indicator; 200. and (5) a square box.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, secured by intervening elements. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 2 to 6, the geometric accuracy alignment structure of a cradle-type five-axis machine tool of the present invention includes a cradle 10, a table 20, a bar detecting assembly 30, and an indicator 40.

The work table 20 is mounted on the swing table bassinet 10. The worktable 20 is provided with a plurality of mounting grooves 21, and the plurality of mounting grooves 21 are parallel to each other and uniformly arranged on the upper surface of the worktable 20 at intervals. Each mounting groove 21 has a trapezoidal cross section.

The rod detecting assembly 30 comprises two brackets 31, a rod detecting 32, an adjusting screw 33, a fixing screw 34 and a nut 35.

Each bracket 31 includes a mounting portion 310, a connecting portion 311, and a fixing portion 312. The mounting portion 310, the connecting portion 311, and the fixing portion 312 are integrally formed. The mounting portion 310 is provided with a mounting hole 3101 and a plurality of adjustment holes 3102. Each adjustment hole 3102 communicates with a mounting hole 3101. The axis of each adjustment hole 3102 is perpendicular to the axis of the mounting hole 3101. A plurality of adjustment holes 3102 are evenly spaced about mounting portion 310 and surround mounting hole 3101. In the present embodiment, the number of the adjustment holes 3102 is four. The connecting portion 311 is a plate, and the mounting portion 310 and the fixing portion 312 are respectively located at two ends of the connecting portion 311. The fixing portion 312 is perpendicular to the connecting portion 311. The fixing portion 312 is provided with a fixing groove 3120, and the fixing groove 3120 is a groove. The height of the bracket 31 is set according to the distance between the upper surface of the worktable 20 and the axis of the A shaft, so that the horizontal height of the detection rod 32 is the same as that of the axis of the A shaft.

The dipstick 32 is cylindrical. The self-precision of the detection rod 32 is 0.001mm-0.002 mm. The shape of the nut 35 corresponds to the shape of the mounting groove 21, and in the present embodiment, the nut 35 has a trapezoidal cross section. Indicator 40 is a dial gauge.

When the cradle type five-axis machine tool geometric accuracy alignment structure is assembled, the indicator 40 is fixed to the machine tool. The two ends of the dipstick 32 are respectively mounted to the mounting holes 3101 of the bracket 31. The adjustment screw 33 is attached to the adjustment hole 3102 and the end of the adjustment screw 33 abuts against the dipstick 32. A nut 35 is seated in the mounting groove 21 of the table 20, and a fixing screw 34 is mounted to the fixing groove 3120 and engaged with the nut 35, so that the bracket 31 is fixed to the table 20.

When the cradle type five-axis machine tool geometric accuracy alignment structure is used, a measuring head of the indicator 40 touches the excircle of one end of the detection rod 32, the axis of the shaft A is rotated, and the bounce of one end of the detection rod 32 is adjusted to be within 0.002mm by adjusting four adjusting screws 33 on the support 31; the measuring head of the indicator 40 touches the excircle at the other end of the detection rod 32, the axis of the shaft A is rotated, and the bounce at the other end of the detection rod 32 is adjusted to be within 0.002mm by adjusting four adjusting screws 33 on the bracket 31; and moving the X-axis for measurement, and respectively detecting a positive generatrix and a side generatrix of the check rod 32, wherein the maximum difference value of the indicator 40 is the parallelism of the axis of the A-axis and the axis of the X-axis in the XY plane and the XZ plane respectively. And the perpendicularity between the rotation axis A and the axis motion of the Y axis and the perpendicularity between the rotation axis A and the axis motion of the Z axis are obtained through the parallelism of the axis of the A axis and the axis of the X in the XY plane and the XZ plane respectively.

Please refer to fig. 7, which illustrates a method for using the geometric accuracy alignment structure of the cradle-type five-axis machine tool, comprising the following steps:

fixing the dipstick 32 to the table 20: fixing a detection rod 32 on the surface of the workbench 20 through a bracket 31, wherein the height of the bracket 31 is set to correspond to the distance from the surface of the workbench 20 to the axis of the shaft A, so that the horizontal height of the detection rod 32 is the same as that of the axis of the shaft A;

adjusting one end of the detecting rod 32 to jump: fixing the indicator 40 at a fixed position of a machine tool, enabling a measuring head of the indicator 40 to touch the excircle of one end of the detection rod 32, rotating the axis of the shaft A, and adjusting the bounce of one end of the detection rod 32 to be within 0.002mm by adjusting four adjusting screws 33 on the bracket 31;

the other end of the detecting rod 32 is adjusted to jump: the measuring head of the indicator 40 touches the excircle at the other end of the detection rod 32, the axis of the shaft A is rotated, and the bounce at the other end of the detection rod 32 is adjusted to be within 0.002mm by adjusting four adjusting screws 33 on the bracket 31;

measuring the parallelism of the axis of the A shaft and the axis of the X shaft: and moving the X-axis for measurement, and respectively detecting a positive generatrix and a side generatrix of the check rod 32, wherein the maximum difference value of the indicator 40 is the parallelism of the axis of the A-axis and the axis of the X-axis in the XY plane and the XZ plane respectively.

And the perpendicularity between the rotation axis A and the axis motion of the Y axis and the perpendicularity between the rotation axis A and the axis motion of the Z axis are obtained through the parallelism of the axis of the A axis and the axis of the X in the XY plane and the XZ plane respectively.

In the method, the axis of the A shaft is simulated by the detection rod 32, and the original verticality between the A shaft and the Y shaft and the verticality between the A shaft and the Z shaft are converted into the requirement for detecting the parallelism between the A shaft and the X shaft, so that the purposes of simple operation and small measurement error are realized.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. The utility model provides a cradle formula five-axis machine tool geometric accuracy alignment structure, includes workstation and indicator, its characterized in that: the cradle type five-axis machine tool geometric accuracy alignment structure further comprises a detection rod assembly, the detection rod assembly comprises two supports and a detection rod, the detection rod is installed between the two supports, the two supports are respectively fixed on the workbench, the horizontal height of the detection rod is the same as the horizontal height of the axis of the A shaft of the machine tool, and the detection rod comprises a positive bus and a side bus.

2. The cradle type five-axis machine tool geometric accuracy alignment structure according to claim 1, characterized in that: the indicator is a dial indicator.

3. The cradle type five-axis machine tool geometric accuracy alignment structure according to claim 1, characterized in that: examine excellent subassembly and still include adjusting screw, the support includes the installation department, the installation department is equipped with mounting hole and regulation hole, the regulation hole with the mounting hole intercommunication, the axis of regulation hole with the axis of mounting hole is perpendicular, it is located to examine excellent tip in the mounting hole, adjusting screw install in the regulation hole and with examine the stick and contradict.

4. The cradle type five-axis machine tool geometric accuracy alignment structure according to claim 3, characterized in that: the quantity of regulation hole is four, four the regulation hole is located respectively about the upper and lower of installation department right it adjusts and fixes about going up to examine the stick.

5. The cradle type five-axis machine tool geometric accuracy alignment structure according to claim 1, characterized in that: the support still includes the fixed part, the fixed part is equipped with the fixed slot, examine excellent subassembly still includes set screw and nut, the workstation is equipped with the mounting groove, set screw stretches into the fixed slot with the nut cooperation in the mounting groove makes the support is fixed in the workstation.

6. The cradle type five-axis machine tool geometric accuracy alignment structure according to claim 5, characterized in that: the cross section of the mounting groove is trapezoidal, and the cross section of the nut corresponding to the mounting groove is also trapezoidal.