CN218461674U - Blank measuring tray - Google Patents

Abstract

The utility model discloses a blank measuring tray, which comprises a reference sheet and a clamp holder, wherein the reference sheet is arranged at the bottom of the clamp holder and is used for being butted with a reference chuck of a machining center; the top of the clamp holder is provided with a front supporting wall and a rear supporting wall, the top of the rear supporting wall is provided with a middle dividing scale, the rear side surface is provided with a guide rail, the guide rail is provided with a slide block, and the left measuring ruler and the right measuring ruler are positioned above the rear supporting wall and fixed on the slide block; the top of the front supporting wall is provided with a guide groove, and the front measuring scale is inserted into the guide groove. During operation, the blank is arranged on the clamp holder and abuts against the rear supporting wall, then the left measuring ruler and the right measuring ruler are pushed to abut against the side face of the blank, the positions of the left side face and the right side face of the blank are read, then the front measuring ruler abuts against the blank, and the position of the front side face of the blank is read. The utility model discloses can make the measurement of blank accomplish outside machining center, save the measurement process of blank on machining center, simplify lathe operating personnel's working procedure greatly, improve the utilization ratio of lathe simultaneously.

Description

Blank measuring tray

Technical Field

The utility model belongs to the measuring device field specifically is a blank measurement tray.

Background

In numerical control machining, the actual position of the blank in the machine tool needs to be measured before machining can begin. There are two types of current measurement methods:

the first is the "on-machine measurement" method, commonly referred to as "tool setting". The method is that the blank is firstly arranged on a machine tool, and a cutter or a special measuring head is adopted to contact 4 side surfaces and the top of the blank in sequence, thereby determining the position of the blank on the machine tool. This method has the disadvantage of taking up the operating time of the machine, reducing the machine utilization, and at the same time increasing the workload of the machine operator.

The second method is an "on-line measurement" method performed on a flexible manufacturing line. The method comprises the steps of measuring the position of a blank relative to a zero quick-change clamp by utilizing three-coordinate measuring equipment on a production line, and determining the position of the blank on a machining center through system conversion. The method saves the positioning link of the blank on the machining center, improves the utilization rate of the machine tool, has the defects of higher production line investment cost, occupation of precious precision measurement equipment and difficult popularization in small enterprises.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a blank measurement tray that extra-mechanical blank measuring device used (the anchor clamps that can measure the blank) for the blank breaks away from machining center and also can be confirmed the position.

In order to realize the above purpose, the utility model adopts the technical scheme that:

a blank measuring tray comprises a reference sheet and a clamp holder, wherein the reference sheet is arranged at the bottom of the clamp holder and is used for being in butt joint with a reference chuck of a machining center; the front end of the top of the holder is provided with a front support wall, the rear end of the top of the holder is provided with a rear support wall, and the front support wall and the rear support wall are in transitional connection through a bottom positioning surface; the front side surface of the rear supporting wall is a rear positioning surface of the tray; the upper surface of the rear supporting wall is provided with an X-direction middle dividing scale, the rear side surface of the rear supporting wall is provided with an X-direction guide rail, the guide rail is provided with two slide blocks, the rear ends of the left measuring scale and the right measuring scale are respectively fixed on one slide block, and the left measuring scale and the right measuring scale are positioned at the top of the rear supporting wall and can move along the middle dividing scale under the driving of the slide blocks; the contact surface and the indicating line of the left measuring scale are coplanar along the Y direction, the contact surface and the indicating line of the right measuring scale are coplanar along the Y direction, and the contact surfaces of the left measuring scale and the right measuring scale are respectively used for clamping the left side surface and the right side surface of the blank; the top central point department of putting of preceding supporting wall is equipped with the guide way, and preceding measuring tape inserts in the guide way and can slide in the guide way along the Y direction, and the upper surface of preceding supporting wall is equipped with fixed indicating line, and the scale of aiming at fixed indicating line on the preceding measuring tape equals the distance of preceding measuring tape front end to rear side locating surface.

The bottom of the reference sheet is provided with four positioning grooves, two positioning grooves are positioned on the X-axis central line of the reference sheet, the other two positioning grooves are positioned on the Y-axis central line of the reference sheet, and the positioning grooves are used for being butted with positioning blocks on the reference chuck; the bottom surface of the reference sheet is an XY plane of the tray, the centers of the two positioning grooves with collinear X axes and a plane perpendicular to the XY plane form an XZ plane of the tray, the centers of the two positioning grooves with collinear Y axes and a plane perpendicular to the XY plane form a YZ plane of the tray, and the intersection point of the XY plane, the XZ plane and the YZ plane is the reference center of the tray.

The bottom positioning surface is parallel to the XY plane, and the rear positioning surface is parallel to the XZ plane.

The position scale line of the middle dividing scale is superposed with the YZ plane.

And the sliding block is provided with a locking bolt, and the sliding block can be locked on the guide rail through the locking bolt.

The plane where the indicating lines on the left measuring scale and the right measuring scale are located is an inclined plane.

The bottom of guide way is higher than the upper surface of back backup wall, and the inside surface of guide way adopts the fillet excessive.

And the front supporting wall is provided with a threaded through hole in the Y direction, the fastening screw is provided with an external thread matched with the threaded through hole, and the fastening screw penetrates through the threaded through hole and is used for abutting the blank against the rear side positioning surface.

The end of the front measuring scale with large scale is the front end of the front measuring scale, and the upper surface of the front measuring scale and the upper surface of the front supporting wall are positioned on the same plane.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model provides a blank measurement tray, the during operation is installed the blank on the holder to near the rear side locating surface, the position of holder rear side locating surface is exactly the position of blank trailing flank. Promote left dipperstick and right dipperstick, make its contact surface lean on the side of tight blank, can read out the position of blank left and right flank through the pilot line on left dipperstick and the right dipperstick. Then, a front measuring ruler is inserted into the guide groove, the front end of the front measuring ruler is enabled to be abutted against the blank, the position of the front side face of the blank is read through a fixed indication line, and the position of the top of the blank can be determined by measuring the distance from the top of the blank to the bottom of the tray. The utility model provides a blank measurement tray can make the measurement of blank work accomplish outside the machining center, has saved the measurement process of blank on the machining center, simplifies machine tool operating personnel's working procedure greatly, has improved the utilization ratio of lathe simultaneously.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a front view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a bottom view of the present invention;

fig. 4 is a left side view of the present invention;

fig. 5 is a right side view of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 2 at I;

FIG. 7 is an enlarged view of a portion of FIG. 2 at II;

FIG. 8 is an enlarged view of a portion of FIG. 4;

fig. 9 is a schematic structural view of the reference plate of the present invention;

FIG. 10 is a schematic structural view of the bottom of the reference plate of the present invention;

FIG. 11 is a schematic structural view of the clamp holder of the present invention;

fig. 12 is a measuring principle diagram of the measuring ruler of the present invention;

fig. 13 is a schematic structural view of the measuring scale and the sliding block of the present invention;

fig. 14 is a schematic diagram illustrating the position of selecting a programming origin M in the digital model according to the present invention;

fig. 15 is a schematic diagram of the position of the machining origin N selected on the reference chuck of the machining center according to the present invention;

fig. 16 is a schematic diagram illustrating the principle of determining the position of the blank according to the present invention;

fig. 17 is a schematic diagram of the present invention building a blank on a digital model of a fixture;

in the figure: 1-a reference sheet; 2-a gripper; 3-fastening screws; 4-a front support wall; 5-measuring the ruler in front; 6-rear side positioning surface; 7-rear support wall; 8-a screw; 9-a slide block; 10-a middle dividing scale; 11-a locking bolt; 12-left measuring scale; 13-a guide rail; 14-right measuring ruler; 15-positioning grooves; 16-a contact surface; 17-an indicator line; 18-fixed indicator line; 19-bottom positioning surface; 20-a guide groove; 21-XZ plane; 22-YZ plane; a 23-XY plane; 24-a threaded through hole; 25-blank; 26-a reference chuck; 27-positioning blocks; 28-limiting column.

Detailed Description

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

As shown in fig. 1-13, the utility model provides a blank measurement tray includes reference plate 1, holder 2, preceding measuring tape 5, slider 9, scale 10, left dipperstick 12, right dipperstick 14 and guide rail 13.

The reference plate 1 (see fig. 8 and 9) is mounted at the bottom of the holder 2 for interfacing with a reference chuck 26 on a machining center. The bottom of benchmark piece 1 is equipped with four constant head tank 15, and two of them constant head tank 15 are located the X axle mean line of benchmark piece 1, and two other constant head tanks 15 are located the Y axle mean line of benchmark piece 1, and constant head tank 15 is used for the quick butt joint with locating piece 27 on the benchmark chuck 26. The bottom of the reference plate 1 forms an XY-plane 23 of the pallet, an XZ-plane 21 of the pallet is formed by the center of one pair of X-axis collinear positioning grooves 15 and a plane perpendicular to the XY-plane 23, a YZ-plane 22 of the pallet is formed by the center of the other pair of Y-axis collinear positioning grooves 15 and a plane perpendicular to the XY-plane 23, and the intersection of the XY-plane 23, XZ-plane 21, and YZ-plane 22 forms the reference center of the pallet.

The four corners of a reference chuck 26 (see fig. 15) of the machining center are provided with equal-height limiting columns 28, the reference chuck 26 is provided with four positioning blocks 27, the heights of the positioning blocks 27 are slightly higher than the heights of the limiting columns 28, two of the positioning blocks 27 are positioned on the X-axis central line of the reference chuck 26, the other two positioning blocks 27 are positioned on the Y-axis central line of the reference chuck 26, and the X-axis and the Y-axis of the reference chuck 26 are respectively parallel to the X-axis and the Y-axis of the reference sheet 1. The upper surfaces of all the stopper posts 28 on the reference chuck 26 constitute an XY plane of the reference chuck 26; a plane passing through the centers of the pair of positioning blocks 27 on which the X axes are collinear and perpendicular to the XY plane constitutes an XZ plane of the reference chuck 26; a plane perpendicular to the XY plane and passing through the centers of the positioning blocks 27 on which the other pair of Y axes are collinear forms a YZ plane of the reference chuck 26, and an intersection of three planes XY, ZX, and ZY of the reference chuck 26 serves as a reference center of the reference chuck 26. When the tray is mounted on the reference chuck 26, the bottom surface of the reference sheet 1 is positioned on the limiting column 28, the top of the positioning block 27 is clamped in the positioning groove 15, and the reference center, the XY plane 23, the XZ plane 21 and the YZ plane 22 of the tray are respectively superposed with the reference center of the reference chuck 26 and the XY, ZX and ZY planes.

The front end of the top of the holder 2 (see fig. 11) is provided with a front supporting wall 4, the rear end of the top of the holder 2 is provided with a rear supporting wall 7, the front supporting wall 4 and the rear supporting wall 7 are in transitional connection through a bottom positioning surface 19, the bottom positioning surface 19 is parallel to the XY plane 23, and a blank 25 is placed on the bottom positioning surface 19 for measurement. The front side surface (inner side surface) of the rear supporting wall 7 is a rear positioning surface 6, the rear positioning surface 6 is parallel to the XZ plane 21, and the bottom positioning surface 19 is vertically connected with the rear positioning surface 6. The upper surface of the rear supporting wall 7 is provided with a middle dividing ruler 10, the length direction of the middle dividing ruler 10 is perpendicular to a YZ plane 22 of the tray and is parallel to an XZ plane 21 and an XY plane 23, and the 0-position scale mark of the middle dividing ruler 10 is superposed with the YZ plane 22. The outer side surface (rear side surface) of the rear supporting wall 7 is provided with a guide rail 13, the direction of the guide rail 13 is vertical to a YZ plane 22 and parallel to an XZ plane 21 and an XY plane 23, and the guide rail 13 is provided with a slide block 9. The left measuring scale 12 and the right measuring scale 14 are fastened on the slide block 9 through screws 8 and can slide along the guide rail 13.

The left measuring ruler 12 and the right measuring ruler 14 are located on top of the rear support wall 7 and are mounted on the slide 9 by means of screws 8 (see fig. 13). The slide 9 can slide on the guide rail 13, so as to drive the left measuring ruler 12 and the right measuring ruler 14 to slide on the top of the rear support wall 7. The slide 9 can be locked on the guide rail 13 by means of a locking bolt 11. The left measuring scale 12 and the right measuring scale 14 are symmetrical to each other. Be equipped with contact surface 16 and instruction line 17 on left dipperstick 12 and the right dipperstick 14, contact surface 16 is located the front side of rear side locating surface 6, and the contact surface 16 and the instruction line 17 coplane of left dipperstick 12 are parallel to YZ plane 22, and the contact surface 16 and the instruction line 17 coplane of right dipperstick 14 are parallel to YZ plane 22, and the left and right sides of blank 25 is do not held in the centre gripping of the contact surface 16 of left dipperstick 12 and the right dipperstick 14 for common centre gripping survey blank 25. The indicating line 17 is positioned above the middle dividing scale 10, the plane where the indicating line 17 is positioned is an inclined plane, and the edge thickness is small, so that the scale value of the middle dividing scale 10 indicated by the indicating line 17 can be observed conveniently. The sum of the scale values of the middle dividing scale 10 indicated by the indicating lines 17 of the left measuring ruler 12 and the right measuring ruler 14 is the width of the blank 25.

The top center of the front supporting wall 4 is provided with a guide groove 20, the direction of the guide groove 20 is perpendicular to the XZ plane 21 of the tray, the front measuring ruler 5 is inserted into the guide groove 20, and the upper surface of the front supporting wall 4 is provided with a fixed indication line 18. The bottom of the guide groove 20 is higher than the upper surface of the rear supporting wall 7, so that the manufacturing is convenient, and the inner surface of the guide groove 20 adopts a fillet transition, so that the cleaning is convenient. A thread through hole 24 parallel to the YZ plane 22 is formed in the front supporting wall 4, an external thread matched with the thread through hole 24 is formed on the fastening screw 3, and the fastening screw 3 penetrates through the thread through hole 24 and is used for enabling the blank 25 to abut against the rear side positioning surface 6.

The front measuring ruler 5 can slide in the guide groove 20 of the holder 2, and the end of the front measuring ruler 5 with large scale indication is the front end of the front measuring ruler. The scale of the front measuring scale 5 aligned with the fixed indicating line 18 is equal to the distance from the front end of the front measuring scale 5 to the rear positioning surface 6, and the corresponding relation between the scale of the front measuring scale 5 and the fixed indicating line 18 can reflect the distance from the front end of the front measuring scale 5 to the rear positioning surface 6. The upper surface of the front measuring ruler 5 and the upper surface of the front supporting wall 4 are positioned on the same plane, so that scale values can be read conveniently. As shown in fig. 12, when the scale 1 of the front measuring tape is aligned with the fixed indicating line 18, the distance s of the front end of the front measuring tape 5 with respect to the rear positioning surface 6 is 10mm. When the fastening screw 3 supports the blank 25 on the rear positioning surface 6, the front end of the front measuring ruler 5 supports the blank 25, and the scale value of the front measuring ruler 5 aligned with the fixed indicating line 18 is the thickness of the blank 25.

In operation, the rectangular blank 25 is vertically mounted on the bottom positioning surface 19 of the holder 2, and the blank 25 is pressed against the rear positioning surface 6 by the fastening screw 3. The position of the rear locating surface 6 of the holder 2 is the position of the rear side of the blank 25. The left dipperstick 12 and the right dipperstick 14 are pushed to abut against the left and right lateral surfaces of the blank 25 respectively, and the positions of the left and right lateral surfaces of the blank 25 are read out through the indicating lines 17 on the left dipperstick 12 and the right dipperstick 14. The front measuring ruler 5 is then inserted into the guide groove 20 and pressed against the blank 25, and the position of the front side of the blank 25 is read by the fixing index line 18. The position of the top of the blank 25 can be determined by measuring the distance from the top of the blank 25 to the bottom of the tray, thus eliminating the need for measuring the blank 25 at the machining center.

The utility model discloses a concrete measurement process of blank measurement tray is given below.

First a particular point M on the digital model is taken as the programming origin (see fig. 14). The distances (Δ XM, Δ YM, Δ ZM) of this point from the reference center of the tray are noted. A machining origin N is then determined on the machining center with a special tool T0 (e.g. a photoelectric probe or a centering bar) (see fig. 15). Distances (Δ XN, Δ YN, Δ ZN) of the machining origin N from the reference center of the pallet are made to coincide with (Δ XM, Δ YM, Δ ZM) in the numerical model. The determination of the position of the specific point M and the machining origin N will not be changed any more later, as the programmed origin and the machining origin for all the cases later.

In operation, a rectangular blank 25 is first vertically mounted on the pallet and tightened with the set screws 3 (see fig. 16). The left measuring scale 12 and the right measuring scale 14 are pushed to enable the contact surface 16 to be close to the blank 25, and the locking bolt 11 on the sliding block 9 is locked. The scale of the center graduated scale 10 corresponding to the indication line 17 on the left measuring scale 12 and the right measuring scale 14 is recorded, and the 2 scales are the distances from the YZ plane 22 of the tray to the left and right sides of the blank 25 respectively. The front measuring ruler 5 is then inserted into the guide groove 20 and is pressed against the blank 25. The scale of the front measuring ruler 5 corresponding to the fixed index line 18 is recorded, and the scale is the distance from the rear positioning surface 6 of the tray to the front side surface of the blank 25.

The position of the rear side of the blank 25 is the position of the rear positioning face 6 of the holder 2 and does not need to be measured. The position of the top of the blank 25 can be measured by other measuring means, in particular by measuring the height of the top of the blank relative to the bottom of the tray (XY-plane 23). Thus, the positions of the left, right, front, back and top five surfaces of the blank are determined.

According to the above measurements, a digital model of the blank is created on the CAD software (see fig. 17). And is programmed with a particular point M in the digital model as the programming origin.

After the programmed program is input to the machine tool, machining can be started as long as the length compensation (i.e., the difference in length of the tool with respect to the special tool T0) is set in the tool list of the machine tool.

The present invention has been described in further detail with reference to the specific embodiments, which should not be construed as limiting the present invention; to the utility model discloses affiliated and relevant technical field's technical personnel are based on the utility model discloses under the technical scheme thinking prerequisite, the extension of doing and the replacement of operating method, data all should fall within the utility model discloses within the protection scope.

Claims (9)

1. A blank measuring tray is characterized in that: the device comprises a reference sheet (1) and a clamp holder (2), wherein the reference sheet (1) is arranged at the bottom of the clamp holder (2) and is used for being butted with a reference chuck (26) of a machining center; the front end of the top of the holder (2) is provided with a front support wall (4), the rear end of the top of the holder (2) is provided with a rear support wall (7), and the front support wall (4) and the rear support wall (7) are in transitional connection through a bottom positioning surface (19); the front side surface of the rear supporting wall (7) is a rear positioning surface (6) of the tray; the upper surface of the rear supporting wall (7) is provided with a middle dividing scale (10) in the X direction, the rear side surface of the rear supporting wall (7) is provided with a guide rail (13) in the X direction, two slide blocks (9) are arranged on the guide rail (13), the rear ends of a left measuring scale (12) and a right measuring scale (14) are respectively fixed on one slide block (9), and the left measuring scale (12) and the right measuring scale (14) are positioned at the top of the rear supporting wall (7) and can move along the middle dividing scale (10) under the driving of the slide blocks (9); the left measuring scale (12) and the right measuring scale (14) are provided with contact surfaces (16) and indication lines (17), the indication lines (17) are located above the scale lines of the middle dividing scale (10), the contact surfaces (16) are located on the front side of the rear side positioning surface (6), the contact surfaces (16) and the indication lines (17) of the left measuring scale (12) are coplanar along the Y direction, the contact surfaces (16) and the indication lines (17) of the right measuring scale (14) are coplanar along the Y direction, and the contact surfaces (16) of the left measuring scale (12) and the right measuring scale (14) are respectively used for clamping the left side surface and the right side surface of the blank (25); the top central point department of putting of preceding supporting wall (4) is equipped with guide way (20), and preceding measuring tape (5) insert in guide way (20) and can slide in guide way (20) along the Y direction, and the upper surface of preceding supporting wall (4) is equipped with fixed index line (18), and the scale of aiming at fixed index line (18) on preceding measuring tape (5) equals the distance of preceding measuring tape (5) front end to rear side locating surface (6).

2. The blank-measuring tray of claim 1, wherein: the bottom of the reference sheet (1) is provided with four positioning grooves (15), two positioning grooves (15) are positioned on the X-axis central line of the reference sheet (1), the other two positioning grooves (15) are positioned on the Y-axis central line of the reference sheet (1), and the positioning grooves (15) are used for being butted with positioning blocks (27) on a reference chuck (26); the bottom surface of the reference sheet (1) is an XY plane (23) of the tray, the centers of the two X-axis collinear positioning grooves (15) and a plane perpendicular to the XY plane (23) form an XZ plane (21) of the tray, the centers of the two Y-axis collinear positioning grooves (15) and a plane perpendicular to the XY plane (23) form a YZ plane (22) of the tray, and the intersection point of the XY plane (23), the XZ plane (21) and the YZ plane (22) is the reference center of the tray.

3. The blank-measuring tray of claim 2, wherein: the bottom positioning surface (19) is parallel to the XY-plane (23) and the rear positioning surface (6) is parallel to the XZ-plane (21).

4. The blank-measuring tray of claim 2, wherein: the (0) position scale mark of the middle dividing scale (10) is superposed with the YZ plane (22).

5. A blank measuring tray according to any one of claims 1 to 4, wherein: and the sliding block (9) is provided with a locking bolt (11), and the sliding block (9) can be locked on the guide rail (13) through the locking bolt (11).

6. A blank measuring tray according to any one of claims 1 to 4, wherein: the plane where the indicating line (17) is located on the left measuring scale (12) and the right measuring scale (14) is an inclined plane.

7. A blank measuring tray according to any one of claims 1 to 4, wherein: the bottom of the guide groove (20) is higher than the upper surface of the rear supporting wall (7), and the inner surface of the guide groove (20) adopts fillet transition.

8. A blank measuring tray according to any one of claims 1 to 4, wherein: the front supporting wall (4) is provided with a threaded through hole (24) in the Y direction, the fastening screw (3) is provided with an external thread matched with the threaded through hole (24), and the fastening screw (3) penetrates through the threaded through hole (24) and is used for abutting the blank (25) against the rear side positioning surface (6).

9. A blank measuring tray according to any one of claims 1 to 4, wherein: the end of the front measuring ruler (5) with large scale indication is the front end of the front measuring ruler, and the upper surface of the front measuring ruler (5) and the upper surface of the front supporting wall (4) are located on the same plane.

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