CN112872515B

CN112872515B - Linear cutting rapid positioning method and device

Info

Publication number: CN112872515B
Application number: CN202110063899.1A
Authority: CN
Inventors: 骆宏晨
Original assignee: Beijing Yisheng Precision Semiconductor Co ltd
Current assignee: Beijing Yisheng Precision Semiconductor Co ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2022-03-04
Anticipated expiration: 2041-01-18
Also published as: CN112872515A

Abstract

The invention relates to a method and a device for quickly positioning in linear cutting, belonging to the technical field of linear cutting processing, which are used for assisting a linear cutting machine to position a part to be cut and comprise a support, a cross beam, a positioning ruler and an elastic connecting assembly, wherein the elastic connecting assembly comprises a bolt, a nut and a spring; specifically, a part to be cut is centered on an online cutting machine and two first positioning holes are machined; placing a part to be cut on the support, and rotating the positioning ruler above the part to be cut; aligning a second positioning hole on the positioning rule with the first positioning hole up and down, and then fixing a part to be cut; adjusting the position of the cutting line to contact with the sharp corner on the positioning ruler, and defining the coordinate of the linear cutting machine as a coordinate (0, 0); the positioning ruler rotates to the initial position, and the part to be cut is cut. The invention has simple structure, high cutting accuracy and high product quality.

Description

Linear cutting rapid positioning method and device

Technical Field

The invention relates to a method and a device for quickly positioning wire cutting, and belongs to the technical field of wire cutting processing.

Background

When industrial products are produced by wire cutting, for the products with unchanged outer diameter and only inner diameter, the coaxiality of the inner diameter and the outer diameter of the products is difficult to ensure. Although the method of finding the center by scribing can be basically solved, the coaxiality precision is not high, the dependence on an operator is also high, and the precision is greatly influenced by the operation of the operator. The coaxiality precision is in an uncontrollable state, and continuous high-coaxiality precision cutting of products cannot be realized.

In summary, it is necessary to design and manufacture a fast positioning device capable of achieving high coaxiality accuracy without depending on human operation, and the device is intended to have a simple structure, convenient manufacture, certain versatility, and long-term use.

Disclosure of Invention

Aiming at the technical problems, the invention provides a method and a device for quickly positioning wire cutting, wherein the technical scheme is as follows:

a wire cutting quick positioning method and a device are used for assisting a wire cutting machine to position a part to be cut and comprise a support, a cross beam and a positioning ruler, wherein the cross beam is installed at the head end of the support, an elastic connecting assembly is connected between the positioning ruler and the cross beam, the elastic connecting assembly comprises a bolt, a nut and a spring, the upper portion of the bolt penetrates through the positioning ruler and the cross beam, the spring is sleeved on the lower portion of the bolt, the top end of the spring is in contact with the positioning ruler, and the bottom end of the spring is in contact with the nut.

Further, the support is a self-contained support of the linear cutting machine, the axis of the beam in the horizontal direction is parallel to the X axis of the linear cutting machine, the initial state of the positioning ruler is parallel to the beam, and the positioning ruler rotates by 90 degrees and then reaches the position above a part to be cut.

Furthermore, two first locating holes are formed in the part to be cut, the tail end of the locating ruler is provided with a sharp corner, the sharp corner is in contact with a cutting line on the linear cutting machine, the locating ruler is provided with a second locating hole corresponding to the first locating hole, a clamping groove is formed in the lower surface of the locating ruler, and the clamping groove is matched with the top of the cross beam.

Furthermore, the number of the second positioning holes is two, the distance between the two second positioning holes is equal to the distance between the two first positioning holes, the circle centers of the two second positioning holes and the vertex of the sharp corner are collinear, and the straight line where the circle centers of the two second positioning holes and the vertex of the sharp corner are located is parallel to the axis of the cross beam in the horizontal direction.

Furthermore, the circle center and the sharp corner of the two second positioning holes are collinear with the intersection point of the cutting line, the straight line where the circle center and the sharp corner of the two second positioning holes are intersected with the cutting line is perpendicular to the cross beam, and the clamping groove is in clearance fit with the cross beam.

Further, a positioning method of the wire-electrode cutting rapid positioning device comprises the following steps:

the method comprises the following steps that firstly, a part to be cut is subjected to center division on an online cutting machine, and two first positioning holes are machined in the part to be cut;

placing the part to be cut on the support, and rotating the positioning ruler above the part to be cut;

step three, aligning a second positioning hole on the positioning rule with a first positioning hole of the part to be cut up and down, and then fixing the part to be cut;

step four, adjusting the position of the cutting line of the linear cutting machine to enable the cutting line to be in contact with the sharp corner on the positioning ruler, and defining the coordinate of the linear cutting machine as a coordinate (0, 0);

and fifthly, rotating the positioning ruler to a position horizontal to the cross beam until the positioning of the part to be cut is completed, and then cutting the part to be cut by the linear cutting machine.

Furthermore, the first positioning hole in the first step corresponds to a wire-cutting threading hole on a wire-cutting machine tool;

the initial state of the positioning rule in the second step is parallel to the cross beam, the positioning rule rotates by 90 degrees and then reaches the position above the part to be cut, and the clamping groove of the positioning rule is clamped with the top of the cross beam;

the third step further comprises adjusting the position of the part to be cut until the positioning pin is inserted into the corresponding first positioning hole from the second positioning hole, and at the moment, the second positioning hole is vertically aligned with the first positioning hole of the part to be cut;

and step five, specifically pulling up the positioning ruler upwards, and rotating the positioning ruler by 90 degrees to be flush with the cross beam.

Further, the part to be cut in the third step is fixed by a pressing plate on the wire cutting machine.

And further, the step four is executed when the parts to be cut with the same size are positioned for the first time, the step four is not required to be executed again after the parts to be cut are positioned, and the step five is directly executed.

The invention has the beneficial effects that:

the invention has simple operation and portability, the influence of personnel on the precision is almost zero, and the position precision can be ensured quickly and for a long time.

Drawings

FIG. 1 is a schematic view of a wire-cutting quick positioning device;

FIG. 2 is a schematic view of the assembly of the elastic connection assembly with the positioning rule and the cross beam;

fig. 3 is a schematic structural view of the positioning ruler.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that unless otherwise specified, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Implement one

As shown in fig. 1-3, a fast positioning device for linear cutting, which is mainly used for assisting a linear cutting machine to position a part 5 to be cut, includes a support 1, a cross beam 2, a positioning rule 3, and an elastic connection assembly 4, where the support 1 is a self-contained support of the linear cutting machine, the cross beam 2 is fixed at the head end of the support 1 through a bolt, the elastic connection assembly 4 is connected between the positioning rule 3 and the cross beam 2, the positioning rule 3 can rotate around the cross beam 2, so that the initial state of the positioning rule 3 is parallel to the cross beam 2, the positioning rule 3 rotates 90 degrees to reach above the part 5 to be cut, and requires that the axis of the cross beam 2 in the horizontal direction is parallel to the X axis of the linear cutting machine, the cross beam 2 is equivalent to the X axis, so that the positioning rule 3 can be ensured to be perpendicular to the X axis after the positioning rule 3 rotates 90 degrees, if the positioning rule 3 is not perpendicular to the cross beam 2, the center of the cut part will always deviate to one direction, affecting the cutting precision of the product, in this embodiment, the cross beam 2 may be in a step shape as shown in fig. 1-2, may also be in a rectangular parallelepiped shape, or may also be in other structures with a triangular or trapezoidal longitudinal section, which mainly plays a role in positioning. Wherein preferred shape is cuboid structure or as shown in the figure the ladder piece, the processing of being convenient for on the one hand, and when crossbeam 2 was installed, only need crossbeam 2's up end and wire cut electrical discharge machining X axle parallel, the axis of crossbeam 2's horizontal direction can be parallel with wire cut electrical discharge machining X axle, easy to assemble and location.

The lower surface of the positioning rule 3 is provided with a clamping groove 32, the clamping groove 32 is matched with the top of the cross beam 2, the width of the clamping groove 32 shown in fig. 1-2 is the same as that of the cross beam 2, after the positioning rule 3 rotates by 90 degrees, the clamping groove 32 can be clamped into the upper part of the cross beam 2, and the clamping groove 32 is in clearance fit with the cross beam 2. The structure can fix the positioning ruler 3 at the same position, so that the part to be measured is positioned more accurately. After location is accomplished to registration ruler 3, can upwards pull out registration ruler 3, then registration ruler 3 rotates to the initial position who is the registration ruler with 2 horizontally positions of crossbeam, and registration ruler 3 is located the top of crossbeam 2 this moment.

Elastic connection subassembly 4 includes bolt 41, nut, spring 42, positioning rule 3 and crossbeam 2 are run through on the upper portion of bolt 41, the lower part cover of bolt 41 has spring 42, spring 42's top and positioning rule 3 contact, spring 42's bottom and nut contact. Be provided with spring 42 between crossbeam 2's the bottom and the nut promptly, locating rule 3 can be rotatory around bolt 41, when locating rule 3 is located initial condition, spring 42 is in tensile state, after locating rule 3 is rotatory 90, draw-in groove 32 receives spring 42's pulling force downstream card on crossbeam 2's upper portion, after waiting to cut the part location, locating rule 3 need rotate the top to crossbeam 2, at this moment, need upwards pull out locating rule 3, make draw-in groove 32 and crossbeam 2 contact or draw-in groove 32 keep away from crossbeam 2, make locating rule 3 rotate to with crossbeam 2 horizontally position.

Two first positioning holes are formed in the to-be-cut part 5, a sharp corner 33 is arranged at the tail end of the positioning rule 3, the sharp corner 33 is in contact with a cutting line on a wire cutting machine (a dotted line in fig. 1 is the cutting line of the wire cutting machine, the positioning rule 3 is provided with a second positioning hole 31 corresponding to the first positioning hole, in addition, the number of the second positioning holes 31 is not less than two, and as long as the distance between the two second positioning holes 31 is equal to the distance between the first positioning holes, the second positioning holes can be aligned with the first positioning holes, so that the to-be-cut part 5 can be adjusted to a set position, and the use range of the positioning rule 3 is enhanced.

When the positioning ruler 3 is located at the initial position, the circle centers of the two second positioning holes 31 and the vertex of the sharp corner 32 are collinear, and the straight line where the circle centers of the second positioning holes 31 and the vertex of the sharp corner 33 are located is parallel to the axis of the cross beam 2 in the horizontal direction; after the positioning ruler 3 rotates 90 degrees, the clamping groove 32 is clamped at the upper part of the beam 2, meanwhile, the top point of the sharp corner 33 is contacted with the cutting line of the wire cutting machine, at the moment, the circle centers of the two second positioning holes 31 and the intersection point of the sharp corner 33 and the cutting line are collinear, and the circle centers of the two second positioning holes 31 and the straight line where the point angle 33 and the intersection point of the cutting lines are located are perpendicular to the beam 2, the beam 2 of the embodiment is parallel to the X axis of the linear cutting machine when being installed, after the positioning ruler 3 rotates 90 degrees, the circle centers of the two second positioning holes 31 and the straight line of the intersection point of the sharp corner 33 and the cutting line are vertical to the cross beam 2, because the first positioning holes of the part 5 to be cut are vertically corresponding to the second positioning holes 31, the line of the centers of the two first positioning holes is also vertical to the cutting line, therefore, the invention can realize the coaxial technical effect of the outer diameter and the inner diameter only after the positioning ruler 3 rotates 90 degrees. Although the center can be found through the mode of marking and finding the center by the outer diameter and the inner diameter in the prior art, the coaxiality precision of the outer diameter and the inner diameter is not high, the dependence on operators is also too high, and the influence of personnel operation on the precision is very large. The invention has simple structure, simple operation and high accuracy, and can realize continuous high-coaxiality precision cutting especially for products with the same outer diameter. The clearance fit of the clamping groove 32 and the cross beam 2 can ensure the positioning precision of the positioning ruler 3 quickly and long-term, reduce the error in manual marking operation and ensure higher precision.

Example two

The method for quickly positioning the wire cutting as shown in fig. 1 to 3 comprises the following specific steps:

firstly, centering and aligning a part 5 to be cut on a linear cutting machine, and processing two first positioning holes on the part 5 to be cut; the first positioning hole corresponds to a wire cutting threading hole on a wire cutting machine tool; the first positioning hole and the wire cutting threading hole on the wire cutting machine tool can be overlapped or not overlapped, and the first positioning hole is only used for positioning and can be selected according to products.

Step two, placing the part 5 to be cut in the step one on the support 1, rotating the positioning ruler 3 by 90 degrees and then reaching the position above the part 5 to be cut, and at the moment, clamping the clamping groove 32 of the positioning ruler 3 with the top of the beam 2 in a clamping manner; it should be noted that the initial state of the positioning rule 3 is parallel to the cross beam 2, the positioning rule 3 rotates by 90 degrees and reaches above the part 5 to be cut, and the clamping groove 32 is clamped with the top of the cross beam 2;

step three, adjusting the position of the part 5 to be cut in the step two, aligning a second positioning hole 31 on the positioning rule 3 with a first positioning hole of the part 5 to be cut up and down, and utilizing a positioning pin in operation, when the positioning pin can be inserted into the corresponding first positioning hole from the second positioning hole 31, aligning the second positioning hole 31 with the first positioning hole of the part 5 to be cut up and down; fixing the part 5 to be cut by utilizing a pressing plate on the wire cutting machine;

step four, adjusting the position of the cutting line of the cutting machine to enable the cutting line to be in contact with the top point of the sharp corner 33 on the positioning ruler 3, and defining the coordinate of the linear cutting machine as a coordinate (0, 0);

and fifthly, the positioning ruler 3 is pulled upwards and rotated to the position horizontal to the cross beam 2 by the ruler, so that the part 5 to be cut is positioned, and then the wire cutting machine cuts the part 5 to be cut.

In addition, the step four is executed when the parts 5 to be cut with the same size are positioned for the first time, and the step four is not needed to be executed when the parts 5 to be cut with the same size are positioned for the next time, and the step five is directly executed.

Firstly, 2 first positioning holes are processed in the middle of a part to be cut, so that the circle center of the part 5 to be cut is positioned on the connecting line of the two first positioning holes; secondly, the crossbeam 2 is parallel to the X axis of the linear cutting machine, the crossbeam 2 is equivalent to the X axis, after the positioning ruler 3 rotates for 90 degrees, the circle center of a second positioning hole on the positioning ruler 3 and the vertex of a sharp corner are both parallel to the X axis of the cutting machine, a first positioning hole of a part 5 to be cut is aligned with a second positioning hole 31 through a positioning pin, and thus the line where the 2 first positioning holes are located is also perpendicular to the X axis of the linear cutting machine, so that the coaxiality precision of the linear cutting machine in cutting is higher, especially for products with the same outer diameter, the position of a cutting line only needs to be adjusted once, after the positioning ruler 3 is rotated each time, the first positioning hole of the part 5 to be cut is aligned with the second positioning hole on the positioning ruler 3, the circle center of the inner diameter of the part 5 to be cut can be ensured to be at the same position each time, and the coaxiality of series products is ensured. Compared with the prior art, the invention has the advantages of simple structure and convenient operation, can realize the high-coaxiality cutting of products, and in addition, the clearance fit of the clamping groove 32 and the cross beam 2 can ensure the position precision of the positioning ruler 3 quickly and for a long time, reduce the error in the manual marking operation and have higher precision.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A wire cutting quick positioning device is used for assisting a wire cutting machine to position a part (5) to be cut and is characterized by comprising a support (1), a cross beam (2) and a positioning ruler (3), wherein the cross beam (2) is installed at the head end of the support (1), an elastic connecting assembly (4) is connected between the positioning ruler (3) and the cross beam (2), the elastic connecting assembly (4) comprises a bolt (41), a nut and a spring (42), the upper part of the bolt (41) penetrates through the positioning ruler (3) and the cross beam (2), the lower part of the bolt (41) is sleeved with the spring (42), the top end of the spring (42) is in contact with the positioning ruler (3), and the bottom end of the spring (42) is in contact with the nut;

two first positioning holes are formed in the part (5) to be cut, two second positioning holes (31) corresponding to the first positioning holes are formed in the positioning ruler (3), the distance between the two second positioning holes (31) is equal to the distance between the two first positioning holes, a clamping groove (32) is formed in the lower surface of the positioning ruler (3), the clamping groove (32) is matched with the top of the cross beam (2), a sharp corner (33) is arranged at the tail end of the positioning ruler (3), and the sharp corner (33) is in contact with a cutting line on a line cutting machine;

when the positioning ruler (3) is located at an initial state, the circle centers of the two second positioning holes (31) and the vertex of the sharp corner (33) are collinear, and the straight line where the circle center of the second positioning hole (31) and the vertex of the sharp corner (33) are located is parallel to the axis of the cross beam (2) in the horizontal direction;

when the positioning ruler (3) rotates by 90 degrees, the circle center and the sharp corner (33) of the second positioning hole (31) are collinear with the intersection point of the cutting line, the straight line where the circle center and the sharp corner (33) of the second positioning hole (31) are intersected with the cutting line is perpendicular to the cross beam (2), and the clamping groove (32) is in clearance fit with the cross beam (2).

2. The quick positioning device for wire cutting according to claim 1, characterized in that the support (1) is a self-contained support of a wire cutting machine, the axis of the beam (2) in the horizontal direction is parallel to the X-axis of the wire cutting machine, the initial state of the positioning ruler (3) is parallel to the beam (2), and the positioning ruler (3) rotates 90 degrees and then reaches above the part (5) to be cut.

3. The positioning method of the wire-electrode cutting quick positioning device as claimed in any one of claims 1-2, comprising the steps of:

firstly, centering a part (5) to be cut on a wire cutting machine, and processing two first positioning holes on the part (5) to be cut;

step two, placing the part (5) to be cut in the step one on the support (1), and rotating the positioning ruler (3) above the part (5) to be cut;

step three, aligning a second positioning hole (31) on the positioning rule (3) with a first positioning hole of the part to be cut (5) up and down, and then fixing the part to be cut (5);

step four, adjusting the position of a cutting line of the linear cutting machine to enable the cutting line to be in contact with a sharp corner (33) on the positioning ruler (3), and defining the coordinate of the linear cutting machine as a coordinate (0, 0);

and fifthly, rotating the positioning ruler (3) to a position horizontal to the cross beam (2) until the positioning of the part (5) to be cut is completed, and then cutting the part (5) to be cut by the wire cutting machine.

4. The positioning method according to claim 3, wherein the first positioning hole in the first step corresponds to a threading hole for wire cutting on a wire cutting machine;

in the second step, the initial state of the positioning ruler (3) is parallel to the cross beam, the positioning ruler (3) rotates by 90 degrees and then reaches the position above the part (5) to be cut, and at the moment, the clamping groove (32) of the positioning ruler (3) is clamped with the top of the cross beam (2);

the third step further comprises the step of adjusting the position of the part (5) to be cut in the second step until the positioning pin is inserted into the corresponding first positioning hole from the second positioning hole (31), and at the moment, the second positioning hole (31) is vertically aligned with the first positioning hole of the part (5) to be cut;

and the fifth step specifically comprises the step of pulling up the positioning ruler (3) upwards, and rotating the positioning ruler (3) by 90 degrees to be flush with the cross beam (2).

5. Method for positioning according to claim 3, characterized in that the part (5) to be cut in step three is fixed with a press plate on a wire cutting machine.

6. The positioning method according to claim 3, characterized by further comprising the step four of directly performing the step five without performing the step four again for the cutting positioning only when the parts (5) to be cut of the same size need to be positioned for the first time.