WO2022007163A1

WO2022007163A1 - Anti-deformation positioning device for miter cutting of copper bar

Info

Publication number: WO2022007163A1
Application number: PCT/CN2020/113891
Authority: WO
Inventors: 赖邦府
Original assignee: 三变科技股份有限公司
Priority date: 2020-07-10
Filing date: 2020-09-08
Publication date: 2022-01-13
Also published as: CN111761531B; CN111761531A

Abstract

An anti-deformation positioning device for miter cutting of a copper bar, comprising a strip-shaped reference supporting block (5), wherein the reference supporting block (5) is provided with a pair of reference positioning clamping blocks (4) connected thereto by means of a sliding pair configuration, sides of the two reference positioning clamping blocks (4) are each provided with an adjusting guide rod (1), and each of the two adjusting guide rods (1) is provided with a set of movable positioning clamping blocks (2); the reference positioning clamping blocks (4) are provided with reference clamping block locking screws (6) capable of locking same, and the movable positioning clamping blocks (2) are provided with movable clamping block locking screws (7) capable of locking same; reference clamp ports (401) for clamping the copper bar are provided on the sides of the reference positioning clamping blocks (4) and above the adjusting guide rods (1), and accordingly, both sides of the movable positioning clamping blocks (2) are respectively provided with movable clamp ports (201) for clamping the copper bar (3). By using the device to clamp a copper bar to be subjected to miter cutting, the operation is convenient and the cutting accuracy is high. The device has a wide range of application, and may clamp copper bars of various types and specifications.

Description

Copper bar oblique cutting anti-deformation positioning device

technical field

The invention relates to a copper bar oblique cutting positioning technology, in particular to an anti-deformation positioning device for copper bar oblique cutting.

Background technique

Copper bar, also known as copper bus bar or copper bus bar, is made of copper material and has a rectangular or chamfered (rounded) rectangular cross-section. The copper bar has low resistivity and is a high-current conductive product, which plays the role of conveying current and connecting electrical equipment in the circuit. In the field of transformers, copper bars are widely used for connecting voltage regulating coils and substation cabinets.

The traditional copper bar cutting is carried out on the cutting platform. Copper bars used in transformers often require bevel cuts. When the copper bar needs to be obliquely cut, the traditional method is to first cut a reference plane on the plate of the copper bar, and then use this reference plane as the positioning reference for subsequent cutting operations. Finding the datum in this way not only wastes material, but also causes the datum plane to be out of alignment due to the thermal deformation of the material. This problem is particularly prominent after the copper bar used as the datum is heated for many times, and the position of the cutting line is very high. It is difficult to find out, and it is easy to cut off. The cut copper bars are often seriously deformed, and the cutting accuracy cannot be guaranteed.

technical problem

In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides an anti-deformation positioning device for oblique cutting of copper bars. Using the copper bar oblique cutting deformation prevention positioning device of the present invention to clamp the copper bar to be obliquely cut is convenient to operate, the cut copper bar will not be deformed, and the cutting precision is high; in addition, the copper bar oblique cutting deformation prevention positioning device of the present invention The device has the characteristics of a wide range of applications, and can clamp various types and specifications of copper bars.

technical solutions

The copper bar oblique cutting anti-deformation positioning device includes a strip-shaped reference block, and a pair of reference positioning and clamping blocks connected to it through the sliding pair are arranged on the reference block, and the sides of the two reference positioning and clamping blocks are each provided with a Each of the two adjusting guide rods is provided with a set of movable positioning clamping blocks which are connected with them through the sliding pair; the reference positioning clamping block is provided with a reference clamping block locking screw that can be locked. The movable clamping block is provided with a movable clamping block locking screw that can be locked; the side of the reference positioning clamping block, above the adjustment guide rod, is provided with a copper bar for clamping Correspondingly, two sides of the movable positioning clamping block are provided with a movable clamping opening for clamping the copper bar.

beneficial effect

Compared with the prior art, the anti-deformation positioning device for oblique cutting of the copper bar of the present invention has the following significant improvements: (1) When clamping the copper bar to be obliquely cut, it is only necessary to connect the copper bar to the bottom of the clamping opening of the positioning clamping block. Positioning can be achieved by flattening, which has the advantage of convenient reference; (2) After the clamping is completed, the copper row is between the two clamping blocks, which are clamped and fixed by the clamping blocks, the cutting route will not deviate, and the cutting precision is high; (3) The movable positioning clamping block can slide relative to the adjustment guide rod, which can adapt to various types and specifications of copper bars, and has a wide range of applications.

As an optimized solution, in the aforementioned anti-deformation positioning device for oblique cutting of copper bars: the tops of the reference clamping block locking screw and the movable clamping block locking screw are provided with annular rotating handles. Therefore, the operator can tighten the locking screw of the reference clamping block and the locking screw of the movable clamping block by rotating the handle, which is simple and labor-saving.

As an optimized solution, in the aforementioned anti-deformation positioning device for oblique cutting of copper bars: the upper part of the adjusting guide rod is machined with a plane, and the locking screw of the movable clamping block is perpendicular to the plane. As a result, the locking screw of the movable clamping block and the adjusting guide rod are matched through a plane, and the contact area is large, and the locking screw of the movable clamping block is not easy to loosen after being locked.

As an optimized solution, in the aforementioned anti-deformation positioning device for oblique cutting of copper bars: a rubber block is provided at the lower end of the locking screw of the movable clamping block. The rubber block has a certain elasticity. After the rubber block at the lower end of the locking screw of the movable clamping block is in contact with the adjusting guide rod, it can continue to rotate the locking screw of the movable clamping block to make the locking screw of the movable clamping block move down slightly, thereby , the movable clamping block locking screw can be tightened more tightly, and the friction coefficient between the rubber block and the adjustment guide rod is relatively large, and it is more difficult to loosen after the movable clamping block locking screw is tightened. The rubber block can be bonded with the lower end of the locking screw of the movable clamping block through vulcanization.

As an optimized solution, in the aforementioned anti-deformation positioning device for oblique cutting of copper bars: the lower end of the locking screw of the movable clamping block is provided with a rubber block; the middle of the locking screw of the movable clamping block is provided with a tapered surface, correspondingly, A guide hole is arranged at the bottom of the movable clamping block facing the reference positioning clamping block on the movable positioning clamping block, and a sliding block that can slide along the guiding hole is arranged in the guiding hole, and the inner side of the sliding block is provided with an angle of inclination with the tapered surface. The inclined surface is consistent with the tapered surface, and the outer side of the slider is provided with a rubber pad. By setting the above structure, when the movable clamping block locking screw is tightened, after the rubber block at the lower end of the movable clamping block locking screw is in contact with the adjusting guide rod, the movable clamping block locking screw can continue to be rotated to lock the movable clamping block. The tightening screw moves down slightly, not only can it be tightened more tightly, it is not easy to loosen after locking, and in the process of continuing to tighten the rubber block at the lower end of the locking screw of the movable clamping block after contacting the adjusting guide rod, the movable clamping block The tapered surface in the middle of the locking screw will squeeze the slope on the inside of the slider, extruding the slider outwards. After the slider is extruded, the rubber pad on the outside moves out, automatically pressing the copper bar, so that the The positioning operation is more convenient, and the positioning accuracy is more guaranteed.

Preferably, the movable clamping block is injection-molded by polyurethane, the locking screw of the movable clamping block is made of steel, and the sliding block is magnetic. Therefore, the slider always leans on the locking screw of the movable clamping block through the magnetic force, and it is not easy to fall or lose.

Preferably, the bottom surface of the rubber block is provided with a group of concentric circular grooves whose centers are located on the center line of the locking screw of the movable clamping block. By arranging concentric circular grooves on the bottom surface of the rubber block, the friction coefficient between the rubber block and the adjusting guide rod is increased, and when the movable clamping block locks the screw to squeeze the slider, it is less likely to be pushed up by the slider, and the reliability is higher.

Preferably, in the unloaded state, when the rubber block is in contact with the adjusting guide rod, the working surface of the rubber pad is flush with the bottom of the movable jaw (the unloaded state means that the rubber block is just in contact with the adjusting guide rod) , the state of the rubber block when it has not been deformed under compression). Further, the taper of the tapered surface can be 1:0.5-1 (in the process of the movable clamping block locking screw 7 pressing the slider 8, the distance the slider 8 moves outward is the same as the movable clamping block locking screw 7 The ratio of the distance moved downward is 1:1～2).

Description of drawings

Fig. 1 is the structural schematic diagram of the anti-deformation positioning device for oblique cutting of copper bars according to Embodiment 1 of the present invention;

Fig. 2 is the side projection view of the copper bar oblique cutting anti-deformation positioning device in Fig. 1;

3 is a schematic structural diagram of the copper bar oblique cutting deformation-proof positioning device in the working state (two copper bars are clamped) according to Embodiment 2 of the present invention;

Fig. 4 is the top view of the copper bar oblique cutting anti-deformation positioning device in Fig. 3;

Fig. 5 is the A-direction sectional view of the copper bar oblique cutting anti-deformation positioning device in Fig. 4;

6 is a schematic structural diagram of a movable positioning clamping block in Embodiment 2 of the present invention;

7 is a schematic diagram of the mating state of the movable clamping block locking screw and the slider in Embodiment 2 of the present invention;

Fig. 8 is the top view of the structure in Fig. 7;

Fig. 9 is the B-direction sectional view of the structure in Fig. 8;

10 is a bottom view (bottom structure) of the rubber block in Example 2 of the present invention;

FIG. 11 is a sectional view of the rubber block in FIG. 10 taken along the line C. FIG.

The symbols in the drawings are: 1-adjustment guide rod, 101-plane; 2-active positioning clamping block, 201-active clamping opening, 202-guide hole; 3-copper bar; 4-reference positioning clamping block, 401 -Reference clamp; 5-Reference block; 6-Reference clamping block locking screw; 7-Active clamping block locking screw, 701-Conical surface; 8-Slider, 801-Bevel; 9-Rubber block, 901- concentric groove; 10- rubber pad.

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present invention.

Example 1

Referring to Figures 1 and 2, the copper bar oblique cutting deformation-preventing positioning device of this embodiment includes a bar-shaped reference block 5, and a pair of reference positioning and clamping blocks 4 are provided on the reference block 5 that are connected to it through a sliding pair. , an adjustment guide rod 1 is provided on the side of the two reference positioning clamping blocks 4, the upper part of the adjustment guide rod 1 is machined with a plane 101, and the two adjustment guide rods 1 are each provided with three connecting rods through the sliding pair. Active positioning clamping block 2; the reference positioning clamping block 4 is provided with a reference clamping block locking screw 6 that can be locked, and the top of the reference clamping block locking screw 6 is provided with a circular rotation The handle, the movable clamping block 2 is provided with a movable clamping block locking screw 7 that can be locked, and the top of the movable clamping block locking screw 7 is provided with an annular rotating handle, and the movable clamping The block locking screw 7 is perpendicular to the plane 101; the side of the reference positioning clamping block 4, above the adjusting guide rod 1, is provided with a reference clamping port 401 for clamping the copper bar 3. Correspondingly, the Two sides of the movable positioning and clamping block 2 are respectively provided with a movable clamping opening 201 for clamping the copper bar 3 .

The process of clamping and positioning the copper bar 3 to be processed by using the copper bar oblique cutting anti-deformation positioning device of the present embodiment may be as follows:

a. Place the copper bar oblique cutting anti-deformation positioning device on the cutting platform and adjust the position, then take a copper bar 3 to be cut, so that one side of the copper bar 3 is connected to the reference clip on the reference positioning clamping block 4 The bottom of the mouth 401 abuts against the bottom of the movable clamping block 2, and then moves the nearest movable positioning clamping block 2 to make the other side of the copper bar 3 abut against the bottom of the movable clamping port 201 on the movable positioning clamping block 2, and then use the movable clamping block 2. The block locking screw 7 fixes the movable positioning clamping block 2;

b. Take another copper bar 3 to be cut, make one side of the copper bar 3 abut against the bottom of another movable jaw 201 on the movable positioning clamping block 2 that was fixed in the previous process, and then move the nearest Move the positioning clamping block 2, make the other side of the copper bar 3 abut against the bottom of the movable jaw 201 of the movable clamping block 2, and then use the movable clamping block locking screw 7 to fix the movable positioning clamping block 2;

c. Repeat process b until all movable positioning and clamping blocks 2 are fixed. (In this embodiment, each adjustment guide rod 1 is provided with 3 movable positioning clamping blocks 2, which can clamp 3 copper bars 3 at the same time)

Example 2

On the basis of the above Embodiment 1, in this embodiment (see Fig. 2-11 ): the lower end of the movable clamping block locking screw 7 is provided with a rubber block 9; the middle part of the movable clamping block locking screw 7 A tapered surface 701 is provided. Correspondingly, a guide hole 202 is provided at the bottom of the movable jaw 201 of the movable positioning clamping block 2 toward the reference positioning clamping block 4, and a guide hole 202 is provided with a slide that can slide along the guide hole. As for the slider 8 , the inner side of the slider 8 is provided with an inclined surface 801 which is consistent with the inclination angle of the tapered surface 701 and abuts against the tapered surface 701 , and the outer side of the slider 8 is provided with a rubber pad 10 . The movable positioning clamping block 2 is made of polyurethane injection molding, the movable clamping block locking screw 7 is made of steel, and the sliding block 8 is magnetic. The bottom surface of the rubber block 9 is provided with a group of concentric circular grooves 901 whose centers are located on the center line of the movable clamping block locking screw 7 (the concentric circular grooves 901 make the friction coefficient between the rubber block 9 and the adjustment guide rod 1 ). increase, it is not easy to be pushed by the reaction force of the slider 8). In a no-load state, when the rubber block 9 is in contact with the adjusting guide rod 1 (plane 101 ), the working surface of the rubber pad 10 (the surface for clamping the copper bar 3 ) is flush with the bottom of the movable jaw 201 flat. The taper of the tapered surface 701 is 1:0.5 (during the process that the locking screw 7 of the movable clamping block squeezes the slider 8, the distance that the slider 8 moves outward is the same as the distance that the locking screw 7 of the movable clamping block moves downward. The ratio of distances is 1:1).

The process of clamping and positioning the copper bar 3 to be processed by using the copper bar oblique cutting deformation-resistant positioning device of the second embodiment can be the same as that of the first embodiment.

In Embodiment 1, the movable clamping block locking screw 7 only plays the role of fixing the movable positioning clamping block 2. If the clamping opening has a certain clamping force on the copper bar 3, it is necessary to lock the movable clamping block. When screwing 7, push the movable positioning clamping block 2 in the direction of the copper bar 3, so that the clamping mouth can clamp the copper bar 3. In actual operation, the copper bar 3 may not be clamped due to operational errors, which in turn affects the cutting accuracy and poses a potential quality risk.

In Embodiment 2, the movable clamping block locking screw 7 not only plays the role of fixing the movable positioning clamping block 2, but in the process of tightening the movable clamping block locking screw 7, the movable clamping block locking screw 7 will The slider 8 is extruded, so that the rubber pad 10 located on the outside of the slider 8 presses the copper bar 3, so that the copper bar 3 automatically obtains the clamping force, the operation is more convenient and labor-saving, and the positioning accuracy is more guaranteed, so as to ensure that the cutting along the predetermined cutting The route (dotted line in Figure 4) is cut, and the rubber pad 10 has a certain elasticity, which can be pressed more tightly and has higher reliability.

Claims

An anti-deformation positioning device for oblique cutting of copper bars is characterized in that: it comprises a bar-shaped reference block (5), and a pair of reference positioning and clamping blocks (4) connected with the reference block (5) through a sliding pair are arranged on the reference block (5). An adjustment guide rod (1) is provided on the side of the two reference positioning clamping blocks (4), respectively, and a set of movable positioning clamping blocks (2) are respectively provided on the two adjustment guide rods (1) which are connected with them through a sliding pair. ); the reference positioning clamping block (4) is provided with a reference clamping block locking screw (6) that can lock it, and the movable positioning clamping block (2) is provided with a movable locking screw (6) that can lock it The clamping block locking screw (7); the side part of the reference positioning clamping block (4) is provided with a reference clamping port (401) for clamping the copper bar above the adjusting guide rod (1). , Correspondingly, two sides of the movable positioning clamping block (2) are respectively provided with a movable clamping opening (201) for clamping the copper bar.
The anti-deformation positioning device for oblique cutting of copper bars according to claim 1, characterized in that: the tops of the reference clamping block locking screw (6) and the movable clamping block locking screw (7) are provided with circular Ring-shaped rotary handle.
The anti-deformation positioning device for oblique cutting of copper bars according to claim 1, characterized in that: the upper part of the adjusting guide rod (1) is machined with a plane (101), and the movable clamping block locking screw (7) is connected to the upper part of the adjusting guide rod (1). The plane (101) is vertical.
The anti-deformation positioning device for oblique cutting of copper bars according to claim 1, characterized in that: a rubber block (9) is provided at the lower end of the movable clamping block locking screw (7).
The anti-deformation positioning device for oblique cutting of copper bars according to claim 1, characterized in that: the lower end of the movable clamping block locking screw (7) is provided with a rubber block (9); the movable clamping block locking screw The middle part of (7) is provided with a tapered surface (701). Correspondingly, a guide hole ( 202), the guide hole (202) is provided with a sliding block (8) that can slide along the guide hole, and the inner side of the sliding block (8) is provided with a tapered surface (701) with an inclination angle consistent with the tapered surface (701). The inclined surface (801) and the outer side of the slider (8) are provided with a rubber pad (10).
The anti-deformation positioning device for oblique cutting of copper bars according to claim 5, characterized in that: the movable positioning clamping block (2) is made of polyurethane injection molding, and the movable clamping block locking screw (7) is made of steel , the slider (8) is magnetic.
The anti-deformation positioning device for oblique cutting of copper bars according to claim 5, characterized in that: the bottom surface of the rubber block (9) is provided with a group of circles whose centers are located on the centerline of the locking screw (7) of the movable clamping block of concentric grooves (901).
The anti-deformation positioning device for oblique cutting of copper bars according to claim 5, characterized in that: in a no-load state, when the rubber block (9) is in contact with the adjusting guide rod (1), the rubber pad (10) The work surface is flush with the bottom of the movable jaw (201).
The anti-deformation positioning device for oblique cutting of copper bars according to claim 8, characterized in that: the taper of the tapered surface (701) is 1:0.5-1.