Workpiece positioning mechanism of low-speed wire cutting machine tool

Abstract

The utility model discloses a workpiece positioning mechanism of a low-speed wire cutting machine tool, which comprises an L-shaped positioning plate fixedly mounted on the machine tool, an L-shaped positioning rod is fixedly mounted on the opposite surface of the positioning plate, and a workpiece placed on the machine tool is clamped between the positioning plate and the positioning rod. A T-shaped limiting clamp connected to the edge of the top of the workpiece in a clamped mode is arranged above the positioning plate, a protruding block is arranged on the side, away from the workpiece, of the upper surface of the limiting clamp, an adjusting bolt is horizontally installed on the protruding block in a threaded mode, and a clamping block movably connected to the surface of the head of the bolt in a sleeving mode is rotationally connected to the side, corresponding to the workpiece, of the adjusting bolt. The limiting clamps are arranged, the workpiece is prevented from vertically shaking, the adjusting bolts and the clamping blocks are arranged on the limiting clamps, the adjusting bolts pull the clamping blocks to pull the first bolts, the limiting clamps vertically extrude and are clamped to the side face of the top of the workpiece in the reverse direction, the upper end of the workpiece is fixed from multiple angles through the multiple sets of limiting clamps, and therefore the stability of the upper end of the workpiece is improved, and the cutting precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning fixtures, in particular to a workpiece positioning mechanism for a wire cutting machine tool. Background Art

[0002] Wire cutting is a type of electric spark wire cutting. It uses a continuously moving thin metal wire (called electrode wire) as an electrode to perform pulse spark discharge on the workpiece to erode metal and cut into shape. The wire speed is generally lower than 0.2mm / s. It is mainly used for processing various complex and precise small workpieces.

[0003] The wire cutting machine does not have a specific workpiece positioning mechanism, but uses a combination fixture, which uses fixture components of different sizes, models and shapes to combine into fixtures of different shapes and sizes, so that different workpieces can be clamped and fixed.

[0004] Existing fixtures for wire-cut cutting machines typically only position the workpiece horizontally and vertically around the base and vertically at the top. However, as the workpiece height increases during the cutting process, the top of the workpiece can experience slight wobbling, affecting cutting accuracy. To address this, our company has designed a new workpiece positioning mechanism for wire-cut cutting machines. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a workpiece positioning mechanism for a wire cutting machine, which is used to solve the problem that the existing workpiece positioning mechanism of the wire cutting machine fails to position the top of the workpiece horizontally and vertically, resulting in slight shaking of the top of the workpiece affecting the cutting accuracy.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A workpiece positioning mechanism for a slow-feed wire cutting machine tool comprises an L-shaped positioning plate fixedly mounted on the machine tool, an L-shaped positioning rod fixedly mounted on the opposite surface of the positioning plate, a workpiece placed on the machine tool being clamped and mounted between the positioning plate and the positioning rod, a T-shaped limit card clamped and mounted on the top edge of the workpiece being provided above the positioning plate, a positioning groove being vertically penetrated through the upper surface of the limit card close to one end of the workpiece, threaded holes being provided on the upper surfaces of both ends of the limit card facing away from the workpiece, the limit card being mounted above the positioning plate by means of a bolt installed in the positioning groove, and a support rod supported on the upper surface of the positioning plate being installed at the bottom of the limit card through a threaded hole;

[0008] A protrusion is provided on the side of the upper surface of the limit card facing away from the workpiece, and an adjusting bolt is installed on the horizontal thread of the protrusion. The adjusting bolt is rotatably connected to a clamping block movably sleeved on the surface of one head of the bolt on the side corresponding to the workpiece, and the clamping block is movably sleeved on the surface of the head of the adjusting bolt through a circular groove vertically penetrating the surface;

[0009] Multiple bolts are installed on both sides of the positioning rod and the positioning plate. The end of the bolt close to the workpiece is rotatably connected to a curved support block supported on the side of the workpiece. The side of the curved support block corresponding to the workpiece is a vertical smooth curved surface.

[0010] Preferably, the positioning plate and the positioning rod are both arranged horizontally.

[0011] Preferably, the upper surface of the positioning plate is provided with a plurality of vertically penetrating fixing grooves, fixing holes and bolt mounting holes, and the plurality of fixing holes and bolt mounting holes are equidistantly arranged along the side of the positioning plate.

[0012] Preferably, the limit card is connected to the top edge of the workpiece through a card slot provided at the bottom of one side of the workpiece.

[0013] Preferably, the positioning groove and the adjusting bolt are both arranged along the axial direction of the limiting card.

[0014] Preferably, the limit card is perpendicular to the corresponding position of the workpiece.

[0015] Preferably, at least one set of limit cards is provided above each of the two mutually perpendicular parts of the positioning plate.

[0016] Preferably, the first bolt, the adjusting bolt and the second bolt are all hexagon socket bolts.

[0017] Preferably, the cross section of the support rod is a regular hexagon.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The utility model positions and clamps the bottom of the workpiece on all sides by means of a positioning plate, a positioning rod, a second bolt and a curved support block, so as to prevent the bottom of the workpiece from shaking horizontally and vertically, and prevents the workpiece from shaking vertically by setting a limit card. An adjusting bolt and a clamping block are provided on the limit card, and the clamping block is pulled by the adjusting bolt to pull the bolt one, and the reverse-acting limit card is vertically squeezed and clamped on the top side of the workpiece. There are multiple groups of limit cards, which fix the upper end of the workpiece from multiple angles, thereby improving the stability of the upper end of the workpiece and improving the cutting accuracy, and solving the problem that the workpiece positioning mechanism of the existing slow-feed wire cutting machine does not perform horizontal and vertical positioning on the top of the workpiece, resulting in slight shaking of the top of the workpiece, which affects the cutting accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is the front view of the utility model;

[0021] Figure 2 This is a front view of the limit card of the utility model;

[0022] Figure 3 This is a front view of the support rod of the utility model;

[0023] Figure 4 This is a front cross-sectional view of the limit card and bolt of the utility model;

[0024] Figure 5 This is a front cross-sectional view of the second bolt and the curved support block of the utility model;

[0025] Figure 6 This is a top view of the utility model;

[0026] Figure 7 This is a top view of the positioning plate of the utility model;

[0027] Figure 8 This is a top view of the limit card of the utility model.

[0028] In the figure: 1. Positioning plate; 101. Fixed mounting groove; 102. Fixed mounting hole; 103. Bolt mounting hole; 2. Positioning rod; 3. Workpiece; 4. Limiting card; 401. Positioning groove; 402. Threaded hole; 403. Protrusion; 404. Adjusting bolt; 405. Block; 406. Circular groove; 407. Slot; 5. Bolt 1; 6. Support rod; 7. Bolt 2; 8. Curved support block. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] like Figure 1-8 As shown, the utility model provides a technical solution: a workpiece positioning mechanism for a slow-feed wire cutting machine tool, comprising an L-shaped positioning plate 1 fixedly mounted on the machine tool, an L-shaped positioning rod 2 fixedly mounted on the opposite surface of the positioning plate 1, the positioning plate 1 and the positioning rod 2 are both horizontally arranged, and the upper surface of the positioning plate 1 is provided with a plurality of vertically penetrating fixed installation grooves 101, fixed installation holes 102 and bolt installation holes 103, the plurality of fixed installation holes 102 and bolt installation holes 103 are equidistantly arranged along the side of the positioning plate 1, the positioning rod 2 is fixedly mounted to the positioning plate 1 by bolts, and the positioning plate 1 is fixedly mounted on the machine tool by bolts, the fixed installation grooves 101 and the fixed installation holes 102;

[0031] The workpiece 3 is clamped and installed between the positioning plate 1 and the positioning rod 2, the T-shaped limiting clamps 4 are arranged above the positioning plate 1 and clamped on the top edge of the workpiece 3, the limiting clamps 4 are clamped on the top edge of the workpiece 3 through the clamping grooves 407 arranged on the bottom of one side of the workpiece 3, the limiting clamps 4 prevent the workpiece 3 from shaking up and down, the limiting clamps 4 are vertically penetrated by the positioning grooves 401 arranged on the upper surface of one end of the limiting clamps 4 close to the workpiece 3, the limiting clamps 4 are provided with the threaded holes 402 arranged on the upper surface of both ends of the limiting clamps 4 away from the workpiece 3, the limiting clamps 4 are installed above the positioning plate 1 through the bolts one 5 installed in the positioning grooves 401, the supporting rods 6 are supported on the upper surface of the positioning plate 1 through the threaded holes 402 arranged at the bottom of the limiting clamps 4, and the cross section of the supporting rods 6 is a regular hexagon.

[0032] At least one set of limiting clamps 4 is arranged above each of the two parts of the positioning plate 1 perpendicular to each other, the protrusions 403 are arranged on the upper surface of the limiting clamps 4 away from the workpiece 3, the adjusting bolts 404 are horizontally and threadedly installed on the protrusions 403, the clamping blocks 405 are movably sleeved on the head surface of the adjusting bolts 404 and are rotatably connected to one side of the workpiece 3 corresponding to the adjusting bolts 404, the clamping blocks 405 are movably sleeved on the head surface of the adjusting bolts 404 through the circular grooves 406 vertically penetrated on the surface of the clamping blocks 405, the positioning grooves 401 and the adjusting bolts 404 are both arranged along the axial direction of the limiting clamps 4, the limiting clamps 4 are perpendicular to the workpiece 3 at the corresponding positions of the limiting clamps 4 and the workpiece 3, and the limiting clamps 4 can be pushed to press the workpiece 3 by tightening the adjusting bolts 404, so that the workpiece 3 is prevented from shaking up and down and transversely.

[0033] The positioning rod 2 is provided with a plurality of bolts two 7 on the two sides away from the positioning plate 1, the bolts one 5, the adjusting bolts 404 and the bolts two 7 are all internal hexagonal bolts, the curved supporting blocks 8 are rotatably connected to one end of the bolts two 7 close to the workpiece 3 and are supported on the side surface of the workpiece 3, and the side of the curved supporting blocks 8 corresponding to the workpiece 3 is a vertical smooth curved surface.

[0034] Working principle:

[0035] The positioning rod 2 is fixedly installed on the positioning plate 1 through bolts, the positioning plate 1 is fixedly installed on the machine tool through the bolts, the fixed installation grooves 101 and the fixed installation holes 102, the workpiece 3 is placed between the positioning plate 1 and the positioning rod 2, the bolts two 7 are screwed, the workpiece 3 is supported and pressed from multiple directions through the curved supporting blocks 8, the positioning plate 1 and the curved supporting blocks 8 clamp and fix the bottom of the workpiece 3, and the workpiece 3 is prevented from shaking transversely and longitudinally.

[0036] The supporting rods 6 with a height close to that of the workpiece 3 are selected and installed in the threaded holes 402 of the limiting clamps 4, are clamped on the edge of the top of the workpiece 3 through the clamping grooves 407, are installed on the positioning plate 1 through the bolts one 5 and the bolt installation holes 103, the tightness of the supporting rods 6 and the bolts one 5 is adjusted, and it is ensured that the limiting clamps 4 remain horizontal and vertically clamp and fix the workpiece 3.

[0037] Tighten the adjusting bolt 404, pull the bolt 5 through the clamping block 405, and the reverse acting limit card 4 is vertically squeezed and clamped on the top side of the workpiece 3. There are multiple groups of limit cards 4, which fix the upper end of the workpiece 3 from multiple angles, thereby improving the stability of the upper end of the workpiece 3.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A workpiece positioning mechanism for a wire cutting machine tool, comprising an L-shaped positioning plate (1) fixedly mounted on the machine tool, an L-shaped positioning rod (2) fixedly mounted on the opposite side of the positioning plate (1), and a workpiece (3) placed on the machine tool being clamped and mounted between the positioning plate (1) and the positioning rod (2), characterized in that: A T-shaped limit card (4) is provided above the positioning plate (1) and is clamped on the top edge of the workpiece (3); a positioning groove (401) is vertically penetrated through the upper surface of one end of the limit card (4) close to the workpiece (3); threaded holes (402) are provided on the upper surfaces of both ends of the limit card (4) away from the workpiece (3); the limit card (4) is installed above the positioning plate (1) through a bolt (5) installed in the positioning groove (401); a support rod (6) supported on the upper surface of the positioning plate (1) is installed at the bottom of the limit card (4) through the threaded hole (402); A protrusion (403) is provided on the side of the upper surface of the limit card (4) facing away from the workpiece (3), and an adjusting bolt (404) is installed on the horizontal thread of the protrusion (403). The adjusting bolt (404) is rotatably connected to a block (405) movably sleeved on the head surface of the bolt (5) on the side corresponding to the workpiece (3). The block (405) is movably sleeved on the head surface of the adjusting bolt (404) through a circular groove (406) vertically penetrating the surface; A plurality of bolts (7) are installed on both sides of the positioning rod (2) and the positioning plate (1) facing away from each other. One end of the bolt (7) close to the workpiece (3) is rotatably connected to a curved support block (8) supported on the side of the workpiece (3). The side of the curved support block (8) corresponding to the workpiece (3) is a vertical smooth curved surface.

2. The workpiece positioning mechanism for a wire cutting machine tool according to claim 1, characterized in that: The positioning plate (1) and the positioning rod (2) are both arranged horizontally.

3. The workpiece positioning mechanism for a wire cutting machine tool according to claim 1, characterized in that: The upper surface of the positioning plate (1) is provided with a plurality of vertically penetrating fixing grooves (101), fixing holes (102) and bolt mounting holes (103), and the plurality of fixing holes (102) and bolt mounting holes (103) are equidistantly arranged along the side of the positioning plate (1).

4. The workpiece positioning mechanism for a wire cutting machine tool according to claim 1, characterized in that: The limit card (4) is connected to the top edge of the workpiece (3) through a card slot (407) provided at the bottom of one side of the corresponding workpiece (3).

5. The workpiece positioning mechanism for a wire cutting machine tool according to claim 1, characterized in that: The positioning groove (401) and the adjusting bolt (404) are both arranged along the axial direction of the limiting clamp (4).

6. The workpiece positioning mechanism for a wire cutting machine tool according to claim 1, characterized in that: The position of the limit card (4) and the workpiece (3) corresponding to the position thereof are perpendicular.

7. The workpiece positioning mechanism for a wire cutting machine tool according to claim 1, characterized in that: At least one set of limit clips (4) is provided above each of the two mutually perpendicular parts of the positioning plate (1).

8. The workpiece positioning mechanism for a wire cutting machine tool according to claim 1, characterized in that: The bolt 1 (5), the adjusting bolt (404) and the bolt 2 (7) are all hexagon socket bolts.

9. The workpiece positioning mechanism for a wire cutting machine tool according to claim 1, characterized in that: The cross section of the support rod (6) is a regular hexagon.

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