CN214722795U

CN214722795U - Alignment measuring device for numerical control machining center

Info

Publication number: CN214722795U
Application number: CN202121340048.9U
Authority: CN
Inventors: 高群; 张艳红; 王中; 曾凡梦; 杜伟
Original assignee: Guizhou Longfei Aviation Accessories Co ltd
Current assignee: Guizhou Longfei Aviation Accessories Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-11-16
Anticipated expiration: 2031-06-17

Abstract

The utility model discloses an alignment measuring device for numerical control machining center, including standard block, lever percentage table, swallow tail seat and universal mechanism, the standard block is cylindrical structure, and the center of standard block is equipped with a recess along its axial be provided with but free rotation's measuring needle in the lever percentage table, measuring needle contacts with the recess in the standard block, the swallow tail seat sets up in the top of lever percentage table, universal mechanism and swallow tail seat fixed connection. Adopt the device, utilize the lever percentage table to carry out contact measurement, have simple structure, operation and convenient to use have not only improved the machining efficiency and the machining precision of work piece, can realize the high-efficient accurate of complicated minor arc and take shape, its practicality is strong, is fit for popularizing and applying.

Description

Alignment measuring device for numerical control machining center

Technical Field

The utility model relates to a machinery processing technology field, concretely relates to alignment measuring device for numerical control machining center.

Background

A lever dial gauge, also known as a lever gauge or a gauge, is a measuring instrument that uses a lever-gear transmission mechanism or a lever-screw transmission mechanism to change a dimension into an angular displacement of a pointer and indicate a length dimension value, and is commonly used for measuring geometric errors and mutual position correctness of workpieces, and length can be measured by a comparison method.

In the field of machining, parts with different structural types can be involved, and for special-shaped parts with complex structures, the parts cannot be measured by adopting a conventional measuring tool and can only be measured by projection and three-coordinate measurement. For a special-shaped piece with a complex structure, a numerical control machining center is adopted for machining, when a shape program is finished, how to measure the shape dimension is not known, no method is available for measuring on a machine tool, the shape dimension can only be measured in a projection mode, and if the shape dimension is unqualified, secondary machining is required. And during secondary processing, the workpiece needs to be clamped and aligned again, and if the workpiece is inconsistent with the state during primary clamping, the machined workpiece is easily scrapped due to the inconsistency of the machining coordinate system through numerical control secondary processing. Therefore, it is necessary to design an alignment device, which uses lever dial indicator and lever principle to realize automatic alignment, avoid secondary processing, not only improve the processing efficiency, advance the product lead cycle, but also reduce the manufacturing cost of enterprises.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to the problem that exists in the background art, utilize the lever percentage table, realize automatic alignment, avoid secondary operation, reach the purpose that a clamping just can accomplish work piece processing, specifically speaking is an alignment measuring device for numerical control machining center.

For solving the technical problem, the utility model discloses the technical scheme who adopts does: the alignment measuring device for the numerical control machining center comprises a standard block, a lever dial indicator, a dovetail seat and a universal mechanism, wherein the standard block is of a cylindrical structure, a groove is formed in the center of the standard block along the axial direction of the standard block, a measuring needle capable of freely rotating is arranged in the lever dial indicator, the measuring needle is in contact with the groove in the standard block, the dovetail seat is arranged at the top of the lever dial indicator, and the universal mechanism is fixedly connected with the dovetail seat.

Further, a numerical control is alignment measuring device for machining center, wherein universal mechanism is including universal connecting rod, regulating block, lower part adjusting screw, upper portion adjusting screw, go up connecting rod universal head and last connecting rod, universal connecting rod has an universal bulb, in universal connecting rod's lower extreme was fixed in the dovetail seat, the upper end that has universal bulb passed through lower part adjusting screw and is connected with the regulating block rotation, the lower extreme of going up connecting rod universal head passes through upper portion adjusting screw and is connected with the regulating block rotation, its upper end and last connecting rod fixed connection.

Further, a numerical control is alignment measuring device for machining center, wherein the regulating block is including left grip block, fixed screw, right grip block and spacing axle, spacing axle sets up between left grip block and right grip block, and the both ends face of spacing axle be equipped with fixed screw assorted screw hole, the fixed screw through the screw hole in the spacing axle respectively with left grip block and right grip block fixed connection.

Further, a numerical control is alignment measuring device for machining center, wherein the calibrated scale in the lever percentage table selects for use the normal facial formula calibrated scale structure that the index value is 0.01 mm.

Adopt a numerical control is alignment measuring device for machining center, owing to be connected with universal mechanism through the swallow tail seat at the top of lever percentage table, but be equipped with free rotation's measuring needle in the lever percentage table, dispose the standard block of taking the recess simultaneously, contact through the recess in measuring needle and the standard block, draw an auxiliary circle, with the help of auxiliary circle, can be used to machining center alignment work piece state, confirm the processing coordinate system to can measure the length dimension or the position in hole of work piece through the lathe, and the height dimension and the curved surface processing of work piece. Therefore, adopt the device, utilize the lever percentage table to carry out contact measurement, have simple structure, operation and convenient to use have not only improved the machining efficiency and the machining precision of work piece, can realize the high-efficient accurate of complicated minor arc and take shape, its practicality is strong, is fit for popularizing and applying.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the machining principle of the numerical control machining center;

fig. 3 is a schematic structural view of the lever dial indicator driving the measuring needle to rotate according to the present invention;

fig. 4 is a schematic structural diagram of the measurement probe in the lever dial indicator of the present invention contacting with the standard block;

FIG. 5 is a schematic diagram of the auxiliary circle structure of the measuring tip of FIG. 4 drawn by the groove of the standard block;

fig. 6 is a schematic structural diagram of the application principle of the device of the present invention.

Shown in the figure: 1-standard block, 2-lever dial indicator, 3-dovetail seat, 4-universal connecting rod, 5-left clamping plate, 6-lower adjusting screw, 7-fixing screw, 8-upper adjusting screw, 9-upper connecting rod universal head, 10-upper connecting rod, 11-right clamping plate, 12-limiting shaft and 13-measuring needle.

Detailed Description

To further illustrate the concept of the present invention, the following detailed description will be made with reference to the accompanying drawings:

as shown in figure 1, a numerical control is alignment measuring device for machining center, including standard block 1, lever percentage table 2, swallow tail seat 3 and universal mechanism, standard block 1 is cylindrical structure, and standard block 1's center is equipped with a recess along its axial, the calibrated scale in the lever percentage table 2 chooses for use the graduation value to be 0.01 mm's frontal formula calibrated scale structure be provided with free rotation's measuring needle 13 in the lever percentage table 2, measuring needle 13 contacts with the recess in the standard block 1, swallow tail seat 3 sets up in the top of lever percentage table 2, universal mechanism and 3 fixed connection of swallow tail seat.

Further, a numerical control is alignment measuring device for machining center, wherein universal mechanism is including universal connecting rod 4, regulating block, lower part adjusting screw 6, upper portion adjusting screw 8, go up connecting rod universal head 9 and last connecting rod 10, universal connecting rod 4 has an universal bulb, universal connecting rod 4's lower extreme is fixed in dovetail seat 3, and the upper end that has universal bulb is passed through lower part adjusting screw 6 and is connected with the regulating block rotation, the lower extreme of going up connecting rod universal head 9 passes through upper portion adjusting screw 8 and is connected with the regulating block rotation, its upper end and last connecting rod 10 fixed connection.

Further, a numerical control is alignment measuring device for machining center, wherein the regulating block is including left grip block 5, fixed screw 7, right grip block 11 and spacing axle 12, spacing axle 12 sets up between left grip block 5 and right grip block 11, and the both ends face of spacing axle 12 be equipped with 7 assorted screw holes of fixed screw, fixed screw 7 through the screw hole in the spacing axle 12 respectively with left grip block 5 and right grip block 11 fixed connection.

The numerical control machining center is a high-efficiency automatic machine tool which consists of mechanical equipment and a numerical control system and is suitable for machining complex parts, and the numerical control machining center automatically controls the machine tool to operate by using digital information consisting of numbers and symbols. The working principle is as follows: as shown in fig. 2, where a rectangle EFGH represents a worktable of the nc machining center, a rectangle ABDC represents a workpiece to be machined, and a circle O represents a spindle for holding a tool, the circle O is controlled to move within the range of the rectangle EFGH by inputting corresponding numbers into the nc machining center, so as to complete machining of the workpiece placed on the worktable, that is, machining of the rectangle ABDC. As shown in fig. 3, when a certain external force is applied to the head of the lever dial gauge 2, i.e., an external force is applied to the measuring tip 13, the tip in the dial is rotated by a value by the lever principle.

In the actual process, adopt the utility model relates to an alignment measuring device for numerical control machining center, as shown in fig. 4 and fig. 5, earlier on be equipped with a width for 20 mm's recess in the standard block 1, then carry out equipment fixing, on being fixed in the numerical control main shaft through last connecting rod 10, let lever percentage table 2 can rotate, according to the recess width, draw an auxiliary circle the same with the recess width around the main shaft through measuring needle 13 in the lever percentage table 2, when measuring, its theory of operation is:

how to know whether the circle drawn by the measuring tip 13 is accurate or not, the value of drawing an auxiliary circle around the main axis by the measuring tip 13 can be indirectly known through the groove in the standard block 1. When the numerical control machining center machines a workpiece, the workpiece is placed at a specified position, a point is found, digital calculation machining is completed through the point during programming, and the point is aligned, namely, a determined machining coordinate system is related to the product quality of the whole workpiece. As shown in FIG. 2, the lever dial indicator 2 is connected with a spindle of a machine tool through a universal mechanism, a measuring needle 13 of a gauge head is contacted with a BD line, the lever dial indicator 2 indicates a value, then the lever dial indicator 2 moves along the FG direction, and when the indicated values are the same, the BD and the FG are parallel, a workpiece ABDC can be clamped. When the machine tool spindle is accurately stopped at the point O1 in fig. 6, the machine tool spindle is swung into the groove in a manual or hand wheel mode, the universal mechanism is adjusted, the measuring needle 13 of the lever dial indicator (2) is in contact with the left and right inner walls of the groove, moves along the X direction, the readings on the left and right walls are the same, then moves along the Y direction, and the measuring needle 13 of the lever dial indicator 2 rotates for one circle around the auxiliary circle formed by the groove, and the readings of the needles in the dial scale in the lever dial indicator 2 are consistent, which indicates that the spindle is at the center of the circle; the machine tool spindle is then stopped exactly as in point O2 in fig. 6. Firstly, a measuring needle 13 in a lever dial indicator 2 draws a fixed circle, namely an auxiliary circle, the circle is tangent to DC, X is reset to zero at the relative coordinate of a machine tool, then the X direction is moved, the circle is tangent to AB, at the moment, the X axis of the machine tool has a moving number, and the center of a workpiece BD is obtained by dividing 2 by the moving number; finding the tangent point of BD and AC by the same method, dividing the numerical reading in the Y direction by 2, and moving the main shaft of the machine tool in a manual or hand wheel mode until the calculated point is O2; and finally, accurately stopping the machine tool spindle at a point O3 in fig. 6, adjusting the universal mechanism to enable the measuring needle 13 in the lever dial indicator 2 to be in the groove of the standard block, adjusting the dial plate in the lever dial indicator 2 to enable the pointer to point to 0 position as shown in fig. 4 and 5, enabling the pointer to be at 0 position, enabling the gauge head to rotate for one circle around an auxiliary circle with the diameter 20, enabling the circle with the diameter of 20 to be tangent to an AB line in fig. 6, enabling X to return to zero, enabling X to be tangent to an AC in fig. 6 and enabling Y to return to zero, and moving the machine tool spindle X10.0 and the point Y-10.0 to be the point O3.

How to detect the BD value in FIG. 6 is to make the lever dial indicator 2 rotate a circle through the groove in the standard block 1 to obtain an excircle with a diameter of 20, and to make the excircle tangent to DC to return the X-axis to zero, and to move the spindle to make the circle tangent to AB, and the value of BD is obtained by subtracting 20 from the reading of the machine tool X.

Adopt a numerical control is alignment measuring device for machining center, because be connected with universal mechanism through swallow tail seat 3 at the top of lever percentage table 2, but be equipped with free rotation's measuring needle 13 in lever percentage table 2, dispose the standard block 1 of taking the recess simultaneously, contact through the recess in measuring needle 13 and the standard block 1, draw an auxiliary circle, with the help of auxiliary circle, can be used to machining center alignment work piece state, confirm the processing coordinate system, and can measure the length dimension or the position in hole of work piece through the lathe, and the height dimension and the curved surface processing of work piece.

To sum up, adopt the device, utilize the lever percentage table to carry out the contact measurement, have simple structure, operation and convenient to use have not only improved the machining efficiency and the machining precision of work piece, can realize the high-efficient accurate of complicated minor arc and take shape, its practicality is strong, is fit for popularizing and applying.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and to those skilled in the art, the present invention can be variously modified and changed, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an alignment measuring device for numerical control machining center which characterized in that: the measuring device comprises a standard block (1), a lever dial indicator (2), a swallow tail seat (3) and a universal mechanism, wherein the standard block (1) is of a cylindrical structure, a groove is formed in the center of the standard block (1) along the axial direction of the standard block, a measuring needle (13) capable of rotating freely is arranged in the lever dial indicator (2), the measuring needle (13) is in contact with the groove in the standard block (1), the swallow tail seat (3) is arranged at the top of the lever dial indicator (2), and the universal mechanism is fixedly connected with the swallow tail seat (3).

2. The alignment measuring device for the numerical control machining center according to claim 1, characterized in that: universal mechanism is including universal connecting rod (4), regulating block, lower part adjusting screw (6), upper portion adjusting screw (8), go up connecting rod universal head (9) and last connecting rod (10), universal connecting rod (4) have a universal bulb, in the lower extreme of universal connecting rod (4) was fixed in dovetail seat (3), the upper end that has universal bulb was rotated through lower part adjusting screw (6) and regulating block and is connected, the lower extreme of going up connecting rod universal head (9) is passed through upper portion adjusting screw (8) and is rotated with the regulating block and be connected, its upper end and last connecting rod (10) fixed connection.

3. The alignment measuring device for the numerical control machining center according to claim 2, characterized in that: the regulating block is including left grip block (5), fixed screw (7), right grip block (11) and spacing axle (12), spacing axle (12) set up between left grip block (5) and right grip block (11), and the both ends face of spacing axle (12) be equipped with fixed screw (7) assorted screw hole, fixed screw (7) through the screw hole in spacing axle (12) respectively with left grip block (5) and right grip block (11) fixed connection.

4. The alignment measuring device for the numerical control machining center according to claim 1, characterized in that: the dial in the lever dial indicator (2) is of a frontal dial structure with the indexing value of 0.01 mm.