Unpowered rolling conductive block device for linear cutting machine tool
By adopting a powerless rolling conductive block device on the online cutting machine, the conductive block rotates automatically and can be adjusted forward and backward, solving the wear problem of conductive blocks and improving cutting efficiency and finished product quality.
Patent Information
- Application Number
- CN202422297041.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-20
AI Technical Summary
In existing online cutting machines, long-term contact and friction are prone to wear, resulting in wire clamping, poor conductivity, wrong cutting shape and broken wire, affecting cutting efficiency and finished product quality.
The non-powered rolling conductive block device is used, and the inner ring of the bearing is fixed to the mandrel by the inner ring of the bearing. The conductive block is connected to the outer ring of the bearing to achieve self-rotation, avoid fixed contact, and adjust the position of the conductive block with the washer to ensure the rotation and forward and backward movement of the conductive block.
It extends the service life of the conductive block, improves the cutting efficiency and finished product quality, reduces the scrapping probability of the conductive block, and can smoothly cut difficult-to-process materials.
Smart Images
Figure CN223172057U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of conductive blocks, in particular to a power-free rolling conductive block device for a wire cutting machine tool. Background Technique
[0002] The rolling conductive block of a wire electrical discharge numerical control wire cutting machine tool is an important component on the wire cutting machine tool, and is usually used to realize functions such as current conduction, stabilizing the cutting process and protecting the machine tool, etc.; it is located on the upper and lower sides of the cutting area and contacts the workpiece. As a current conduction medium, it ensures that the current can smoothly pass through the workpiece, form a cutting arc and realize cutting.
[0003] The existing conductive blocks are generally made of cemented carbide materials. The processing principle is that the workpiece is melted and eroded by the instantaneous discharge between the cutting wire and the two electrodes of the workpiece. During the wire cutting process, the cutting wire is always in contact with the fixed conductive block and slides relatively. The working electricity is introduced into the cutting wire through the conductive block to form an electrode. The conductive block is fixedly fixed on the wire frame and the cutting wire moves.
[0004] However, with the long-term contact, friction and discharge between the cutting wire and the conductive block, the position where the conductive block contacts the cutting wire is extremely easy to wear and form grooves, resulting in situations such as wire clamping, poor conductivity, incorrect cutting shape, wire breakage, etc., seriously affecting the cutting efficiency and the quality of the finished product. Content of the Utility Model
[0005] The technical problem to be solved by the utility model is to provide a power-free rolling conductive block device for a wire cutting machine tool.
[0006] To solve the above problems, the technical solution adopted by the utility model is:
[0007] A power-free rolling conductive block device for a wire cutting machine tool, which includes: a core shaft, a bearing, a conductive block and a bearing limit member that are integrally formed and horizontally arranged;
[0008] Wherein, the core shaft includes a front-end small-diameter section and a rear-end large-diameter section, the diameter of the rear-end large-diameter section is greater than the diameter of the front-end small-diameter section, and the tail end of the rear-end large-diameter section is fixed on the wire arm of the wire cutting machine tool;
[0009] The inner ring of the bearing is sleeved on the front-end small-diameter section, and the front and rear sides of the inner ring are respectively abutted against the bearing limit member and the rear-end large-diameter section, so that the inner ring is fixed on the front-end small-diameter section;
[0010] The conductive block is in the shape of a horizontal circular tube, and its inner wall is connected to the outer ring of the bearing, and the conductive block can rotate relative to the core shaft.
[0011] As an implementation manner of the utility model, one bearing is provided and it is a needle roller bearing. The bearing abuts against the bearing limiting member and the rear end large head section respectively through bearing pads arranged on the front and rear sides of its inner ring;
[0012] The inner wall of the conductive block is connected to the outer ring of the bearing.
[0013] As an implementation manner of the utility model, two bearings are provided and both are ball bearings. A bearing intermediate pad that abuts against the inner rings of the two bearings respectively is arranged between the two bearings. The bearing at the front end abuts against the bearing limiting member through a bearing pad arranged on the front side of its inner ring, and the inner ring of the bearing at the rearmost end abuts against the rear end large head section;
[0014] The inner wall of the conductive block is connected to the outer rings of the two bearings.
[0015] As an implementation manner of the utility model, a number of abutting first washers are arranged on the front end small head section. The first washers are located between the bearing at the rear end and the rear end large head section. The first washers are used to change the distance between the conductive block and the wire arm when increasing or decreasing.
[0016] As an implementation manner of the utility model, a ring of bosses is arranged on the front side outer wall of the rear end large head section. A number of second washers that abut against each other are arranged between the bosses and the wire arm;
[0017] After the tail end of the rear end large head section passes through the wire arm on the wire cutting machine tool, it is fixed by second washers and a first fixing nut located on the front and rear sides of the wire arm; the second washers are used to change the distance between the conductive block and the wire arm when increasing or decreasing.
[0018] As an implementation manner of the utility model, the bearing limiting member is a locking nut. <8000040>As an implementation manner of the utility model, an electrode wiring and a second fixing nut are further arranged on the tail end of the rear end large head section, and the electrode wiring is located between the first fixing nut and the second fixing nut.
[0020] As an implementation manner of the utility model, the outer surface of the conductive block is smooth.
[0021] As an implementation manner of the utility model, a groove is arranged on the outer surface of the conductive block, and the groove is a multi-V groove, a single-V groove, a multi-arc groove, a single-arc groove or a large-arc groove.
[0022] The beneficial effects produced by adopting the above technical solutions are as follows:
[0023] The rolling conductive block device for a wire cutting machine tool provided by the embodiment of the present utility model connects the inner ring of the bearing to the mandrel and the outer ring to the inner wall of the conductive block, so that the conductive block is connected to the mandrel through the bearing. By fixing the inner ring of the bearing, it is ensured that the conductive block can rotate relative to the mandrel (that is, the axis of rotation of the conductive block is in line with the axis of the mandrel). During the cutting process, the conductive block can rotate by itself under the action of the running molybdenum wire without the need to provide additional power, thus realizing the non-powered rolling of the conductive block. Since the conductive block can rotate, the position where it contacts the cutting wire is no longer fixed, improving the utilization rate of the conductive block and extending its service life. After installing this conductive block on ordinary equipment, it can smoothly cut difficult-to-machine materials such as aluminum and copper parts, reducing the probability of conductive block scrapping and improving the cutting efficiency and finished product quality.
[0024] In addition, in the embodiment of the present utility model, by providing a plurality of first washers or second washers, the number of the first washers or the second washers is changed to realize the forward and backward movement of the conductive block along its axial direction, avoiding the worn positions, ensuring that the conductive block can not only rotate but also be adjusted forward and backward, further improving the utilization rate of the conductive block. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 is an installation schematic diagram of a non-powered rolling conductive block device for a wire cutting machine tool provided by the embodiment of the present utility model.
[0026] Figure 2 is a sectional view of a non-powered rolling conductive block device for a wire cutting machine tool provided by the embodiment of the present utility model.
[0027] Figure 3 is a sectional view of another non-powered rolling conductive block device for a wire cutting machine tool provided by the embodiment of the present utility model.
[0028] Figure 4 is Figure 3 a partial enlarged view at Q in
[0029] Figure 5 is a sectional view of a mandrel provided by the embodiment of the present utility model.
[0030] Figure 6 is a sectional view of conductive blocks of different styles provided by the embodiment of the present utility model.
[0031] Figure 7 is a schematic diagram before and after the movement of a non-powered rolling conductive block device for a wire cutting machine tool provided by the embodiment of the present utility model.
[0032] Figure 8 is a schematic diagram before and after the movement of another non-powered rolling conductive block device for a wire cutting machine tool provided by the embodiment of the present utility model.
[0033] Wherein: 100 wire cutting machine tool, 200 wire arm,
[0034] 1 mandrel, 1-1 front small head section, 1-2 rear large head section, 1-3 boss, 2 bearings, 2-1 inner ring, 2-2 outer ring, 2-3 bearing intermediate pad, 3 conductive block, 4-1 bearing pad, 5 first washer, 6 second washer, 7 first fixing nut, 8 electrode wiring, 9 second fixing nut. Specific embodiments
[0035] To make the objectives, technical solutions and advantages of the present utility model clearer, the following describes the utility model clearly and completely with reference to specific embodiments.
[0036] An embodiment of the present utility model provides a non-powered rolling conductive block device for a wire cutting machine tool, as Figures 1-6 shown, which includes: a mandrel 1, bearings 2, conductive blocks 3 and bearing limiters 4 that are integrally formed and horizontally arranged;
[0037] Wherein, as Figures 2-5 shown, the mandrel 1 includes a front small head section 1-1 and a rear large head section 1-2, the diameter of the rear large head section 1-2 is greater than the diameter of the front small head section 1-1, and the tail end of the rear large head section 1-2 is fixed on the wire arm 200 of the wire cutting machine tool 100;
[0038] The inner ring of the bearing is sleeved on the front small head section 1-1 and can be in transitional fit with the front small head, and the front and rear sides of the inner ring are respectively abutted against the bearing limiter 4 and the rear large head section 1-2, so that the inner ring is fixed on the front small head section 1-1; One bearing can be provided. When there is one bearing, as Figure 2 shown, it is a needle roller bearing, and the bearings 2 are respectively abutted against the bearing limiter 4 and the rear large head section 1-2 through bearing pads 4-1 arranged on the front and rear sides of its inner ring; The inner wall of the conductive block 3 is connected to the outer ring of the bearing 2.
[0039] Or, as Figure 3 and Figure 4 shown, two bearings 2 (bearing A and bearing B) are provided, both bearings are ball bearings, a bearing intermediate pad 2-3 that abuts against the inner rings 2-1 of the two bearings respectively is arranged between the two bearings 2, and the inner ring 2-1 of the bearing at the front (the inner ring of bearing A) is abutted against the bearing limiter 4 through a bearing pad 4-1 arranged on the front side of its inner ring, and the inner ring 2-1 of the bearing at the rearmost end (the inner ring of bearing B) is directly abutted against the rear large head section 1-2;
[0040] The conductive block 3 is in the shape of a horizontal circular tube, and its inner wall is connected to the outer ring 2-2 of the bearing 2. The conductive block 3 can rotate relative to the mandrel 1. The outer surface of the conductive block 3 can be smooth or provided with grooves. The grooves can be multi-V grooves, single-V grooves, multi-arc grooves, single-arc grooves or large-arc grooves. The embodiments of the present invention do not make specific limitations on this, such as Figure 6 as shown, Figure 6 in (a) represents smoothness, (b) represents multi-V grooves, (c) represents single-V grooves, (d) represents multi-arc grooves, (e) represents single-arc grooves, and (f) represents large-arc grooves.
[0041] The bearing limit member 4 can be a locking nut, and the locking nut abuts against the front bearing pad 4-1. Of course, in order to achieve the aforementioned abutment, such as Figure 4 as shown, the outer diameter a of the bearing pad 4-1 and the diameter b of the large-head section 1-2 at the rear end are both smaller than the inner diameter c of the bearing 2.
[0042] The non-powered rolling conductive block device for a wire cutting machine tool provided by the embodiments of the present utility model connects the inner ring 2-1 of the bearing to the mandrel 1 and the outer ring 2-2 to the inner wall of the conductive block 3, so that the conductive block 3 is connected to the mandrel 1 through the bearing 2. By fixing the inner ring 2-1 of the bearing, it is ensured that the conductive block 3 can rotate relative to the mandrel 1 (that is, the axis of rotation of the conductive block 3 and the axis of the mandrel 1 are on the same straight line). During the cutting process, the conductive block can rotate by itself under the operation of the molybdenum wire, and no additional power needs to be provided to it, thus realizing the non-powered rolling of the conductive block 3. Since the conductive block 3 can rotate, the position where it contacts the cutting wire is no longer fixed, improving the utilization rate of the conductive block. After this conductive block is installed on ordinary equipment, it can smoothly cut difficult-to-machine materials such as aluminum and copper parts, extending the service life of the conductive block, reducing the probability of the conductive block being scrapped, and improving the cutting efficiency and the quality of the finished product.
[0043] Of course, to further improve its service life, in the embodiments of the present utility model, the conductive block 3 can also be moved back and forth along its axis to increase the usage efficiency, that is, to change the distance between the conductive block 3 and the wire arm 200. This distance refers to the minimum distance L between the conductive block 3 and the wire arm 200, such as Figure 7 and Figure 8 as shown, Figure 7 and Figure 8 in (a) both represent before movement, and (b) both represent after movement.
[0044] such as Figure 7As shown, a number of first washers 5 in contact with each other are provided on the front small-head section 1-1. The first washers 5 are located between the bearing 2 (bearing B) at the rear end and the rear large-head section 1-2. The first washers 5 are used to change the distance L between the conductive block 3 and the wire arm 200 when increased or decreased.
[0045] Further, as Figure 2 , Figure 3 , Figure 5 shown, a ring of bosses 1-3 is provided on the front outer wall of the rear large-head section 1-2. A number of second washers 6 in contact with each other are provided between the bosses 1-3 and the wire arm 200; a preset distance S is left between the bosses 1-3 and the bearing 2 at the rearmost end, and the preset distance is 0.5 - 0.7 mm.
[0046] After the tail end of the rear large-head section 1-2 passes through the wire arm 200 on the wire cutting machine 100, it is fixed by the second washers 6 and the first fixing nut 7 on the front and rear sides of the wire arm 200; the second washers 6 are used to change the distance between the conductive block 3 and the wire arm 200 when increased or decreased.
[0047] Therefore, in the embodiment of the present invention, by providing a number of first washers 5 or second washers 6, changing the number of the first washers 5 or the second washers 6 can realize the forward and backward movement of the conductive block 3 along its axial direction, avoiding the worn positions, ensuring that the conductive block 3 can not only rotate but also be adjusted forward and backward, and further improving the utilization rate of the conductive block 3.
[0048] Of course, as Figures 1-3 shown, in order to realize electric cutting, an electrode connection wire 8 and a second fixing nut 9 are further provided on the tail end of the rear large-head section, and the electrode connection wire is located between the first fixing nut 7 and the second fixing nut 9.
[0049] The present invention increases the bearing 2 in the middle of the conductive block 3 according to the principle of extending the conductive surface length and improving the conductive stability, and improves the size and shape of the mandrel 1, effectively improving the processing stability and processing quality. Through experiments, the stable cutting duration can reach more than 24 times that of ordinary conductive blocks.
Claims
1. A non-powered rolling conductive block device for a wire cutting machine tool, characterized in that, It includes: an integrally formed and horizontally arranged mandrel, a bearing, a conductive block, and a bearing limiting member; Among them, the mandrel includes a front small-head section and a rear large-head section. The diameter of the rear large-head section is greater than that of the front small-head section, and the tail end of the rear large-head section is fixed on the wire arm of the wire cutting machine tool; The inner ring of the bearing is sleeved on the front small-head section, and the front and rear sides of the inner ring respectively abut against the bearing limiting member and the rear large-head section, so that the inner ring is fixed on the front small-head section; The conductive block is in the shape of a horizontal circular tube, and its inner wall is connected to the outer ring of the bearing. The conductive block can rotate relative to the mandrel.
2. The non-powered rolling conductive block device for a wire cutting machine tool according to claim 1, characterized in that, One bearing is provided and it is a needle roller bearing. The bearing abuts against the bearing limiting member and the rear large-head section respectively through bearing pads arranged on the front and rear sides of its inner ring; The inner wall of the conductive block is connected to the outer ring of the bearing.
3. The non-powered rolling conductive block device for a wire cutting machine tool according to claim 1, characterized in that, Two bearings are provided and they are both ball bearings. A bearing intermediate pad that abuts against the inner rings of the two bearings respectively is arranged between the two bearings. The bearing at the front abuts against the bearing limiting member through a bearing pad arranged on the front side of its inner ring, and the inner ring of the bearing at the rearmost end abuts against the rear large-head section; The inner wall of the conductive block is connected to the outer rings of the two bearings.
4. The non-powered rolling conductive block device for a wire cutting machine tool according to claim 3, characterized in that, A number of mutually abutted first washers are arranged on the front small-head section. The first washers are located between the bearing at the rear and the rear large-head section. The first washers are used to change the distance between the conductive block and the wire arm when increased or decreased.
5. A non-powered rolling conductive block device for a wire cutting machine tool according to claim 1, characterized in that, A circle of protrusions is arranged on the outer wall of the front side of the rear large-head section. A number of mutually abutted second washers are arranged between the protrusions and the wire arm; After the tail end of the rear large-head section passes through the wire arm of the wire cutting machine tool, it is fixed by second washers and a first fixing nut located on the front and rear sides of the wire arm; the second washers are used to change the distance between the conductive block and the wire arm when increased or decreased.
6. The non-powered rolling conductive block device for a wire cutting machine tool according to claim 5, characterized in that, An electrode connection wire and a second fixing nut are also arranged on the tail end of the rear large-head section, and the electrode connection wire is located between the first fixing nut and the second fixing nut.
7. A non-powered rolling conductive block device for a wire cutting machine tool according to claim 1, characterized in that, The outer surface of the conductive block is smooth.
8. The non-powered rolling conductive block device for a wire cutting machine tool according to claim 7, wherein A groove is arranged on the outer surface of the conductive block. The groove is a multi-V groove, a single-V groove, a multi-arc groove, a single-arc groove, or a large-arc groove.
9. The non-powered rolling conductive block device for a wire cutting machine tool according to claim 1, characterized in that, The bearing limiting member is a locking nut.