Auxiliary workbench for wire cutting machine tool

Abstract

The present invention relates to a machine tool auxiliary tool, specifically an auxiliary workbench for a wire cutting machine tool, which aims to solve the technical problem of low efficiency of existing wire cutting machine tools in processing rotary products. The following technical scheme is adopted: it includes a base, a first column and a second column are fixed on the base, at least two rotating shafts are passed through the common gap between the first column and the second column, the parts of the rotating shaft located on both sides of the first column are provided with a limiting structure, the ends of the rotating shaft extending outward from the first column are provided with a mounting structure, the mounting structure ensures that the workpiece and the rotating shaft are coaxial, a first locking bolt is provided on the first column corresponding to each rotating shaft, a dividing plate is provided in the coaxial gap of the rotating shaft extending outward from the second column, and a locking structure is provided on the rotating shaft, pin holes are evenly distributed along the circumference of the dividing plate, a positioning pin is inserted on the second column, the end of the positioning pin close to the dividing plate is adapted to the pin hole and the diameter is enlarged to form a stepped surface, and a compression spring sleeved on the positioning pin is provided between the stepped surface and the second column.

Description

Technical Field

[0001] The invention relates to a machine tool auxiliary tool, in particular to an auxiliary workbench for a wire cutting machine tool. Background Art

[0002] Wire cutting machine processing is an electro-erosion process. The electrode wire does not generate force on the workpiece, the deformation of the workpiece is small, and it can process very hard or brittle metal materials. It is not limited by the tool and can process complex workpieces that are difficult or impossible to process with traditional cutting methods. It has been used more and more widely in recent years. However, the processing efficiency of wire cutting machine tools is low. When processing plate parts, multiple pieces are usually clamped together at one time, and multiple products are processed at one time. For rotary multi-angle parts, they can only be processed with the help of a single piece clamping on a rotary table, and the processing efficiency is low. Summary of the invention

[0003] The invention aims to solve the technical problem that the existing wire cutting machine tool has low efficiency in processing rotary products.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A wire cutting machine tool auxiliary workbench comprises a base, a first column and a second column (the so-called columns are columns arranged vertically) are fixed on the base, at least two rotating shafts are penetrated through a common gap between the first column and the second column (the penetration of the gap ensures the installation accuracy of the rotating shaft on the one hand, and does not move radially; on the other hand, it ensures that the rotating shaft can rotate freely in the first column and the second column), the axis of each rotating shaft is arranged horizontally and the axes of all the rotating shafts are located in the same vertical plane, the parts of the rotating shaft located on both sides of the first column are provided with a limiting structure for limiting the axial movement of the rotating shaft, the end of the rotating shaft extending outward from the first column is provided with a mounting structure for mounting a workpiece, and the mounting structure The structure ensures that the workpiece is coaxial with the rotating shaft, and each rotating shaft is provided with a first locking bolt on the first column corresponding to the first rotating shaft, and a dividing plate is provided in the coaxial gap of the part of the rotating shaft extending outward from the second column (the gap set ensures the installation accuracy of the dividing plate and does not move radially on the one hand, and ensures that the dividing plate can rotate freely on the rotating shaft on the other hand), and a locking structure for locking the dividing plate is provided on the rotating shaft, and pin holes are evenly distributed on the dividing plate along the circumference, and a locating pin parallel to the rotating shaft is inserted on the second column, and the end of the locating pin close to the dividing plate is adapted to the pin hole and the diameter is enlarged to form a stepped surface, and a compression spring sleeved on the locating pin is provided between the stepped surface and the second column.

[0006] Furthermore, the rotating shaft is a three-level stepped shaft structure consisting of a first shaft section, a second shaft section, a third shaft section and a fourth shaft section with successively decreasing diameters. The second shaft section is gap-mounted in the first column and the axial length of the second shaft section is the same as the axial thickness of the rotating shaft of the first column (the same thickness ensures the axial positioning of the rotating shaft on the one hand, and avoids the situation where the rotation of the rotating shaft is obstructed due to the limiting nut being pressed on the first column on the other hand). The third shaft section is inserted into the second column, and the part of the third shaft section adjacent to the second shaft section is screwed with a limiting nut. The step surface between the first shaft section and the second shaft section and the limit nut form the limiting structure. The dividing plate is gap-mounted on the fourth shaft section, and the second locking bolt is screwed on the end face of the fourth shaft section. The step surface between the third shaft section and the fourth shaft section and the second locking bolt form the locking structure.

[0007] Furthermore, a truncated cone-shaped groove coaxial with the rotating shaft is opened on the end face of the first shaft segment, and the large diameter end of the groove faces outward. The mounting structure includes a chuck body, an elastic chuck and a pressure cover. One end of the chuck body is set as a truncated cone portion adapted to the groove, and the outer wall of the other end of the chuck body is provided with a thread. A first-level stepped hole is coaxially provided in the chuck body and the small-diameter hole is close to the rotating shaft. The chuck body is locked on the first shaft segment by screws, and the large diameter end of the first-level stepped hole is expanded outward to form a truncated cone hole. The pressure cover is a barrel-shaped structure with a hole in the center of the bottom. The pressure cover is screwed on the thread of the chuck body, and the elastic chuck is embedded in the truncated cone hole and is pressed by the bottom of the pressure cover. The center hole at the bottom of the pressure cover is used to pass the workpiece.

[0008] Furthermore, the middle portion of the chuck body is configured as a cylindrical section and has a diameter greater than that of the two end portions.

[0009] Furthermore, a ball handle is screwed onto the end of the positioning pin that is not matched with the pin hole, and the diameter of the ball handle is larger than that of the positioning pin.

[0010] Furthermore, a plurality of radial blind holes are evenly distributed along the circumference of the second shaft segment.

[0011] Furthermore, a recess is provided on a surface of the second column opposite to the dividing plate, and a compression spring portion is disposed in the recess.

[0012] Furthermore, the pin hole is a tapered hole.

[0013] The beneficial effects of the present invention are:

[0014] The present invention provides an auxiliary workbench for a wire cutting machine tool, which is provided with a plurality of vertically distributed rotating shafts, on which a dividing plate and a mounting structure for mounting workpieces are arranged, so that a plurality of workpieces can be wire cut simultaneously, and the dividing plate can meet the requirements of wire cutting at different angles for rotary workpieces, thereby greatly improving the efficiency of wire cutting. In addition, the auxiliary workbench has a simple structure, is easy to use, has strong practicality and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the installation structure of the auxiliary workbench of the present invention on the machine tool;

[0017] Figure 2 It is a structural schematic diagram of the auxiliary workbench of the present invention;

[0018] Figure 3 It is a structural schematic diagram of a base, a first column and a second column of the present invention;

[0019] Figure 4 is a cross-sectional view of a rotating shaft of the present invention;

[0020] Figure 5 is a cross-sectional view of a chuck body of the present invention;

[0021] Figure 6 It is a schematic structural diagram of the gland of the present invention;

[0022] Figure 7 It is a structural schematic diagram of the elastic chuck of the present invention;

[0023] Figure 8 It is a structural schematic diagram of the limit nut of the present invention;

[0024] Fig. 9 It is a structural schematic diagram of the ball head handle of the present invention;

[0025] Fig.10 It is a schematic structural diagram of the positioning pin of the present invention (without the ball handle);

[0026] Fig.11 It is a structural schematic diagram of the indexing plate of the present invention;

[0027] Fig.12 It is a schematic diagram of the structure of the first and second locking bolts of the present invention;

[0028] Fig.13 It is a structural schematic diagram of the compression spring of the present invention;

[0029] Fig.14 It is a structural schematic diagram of a specific workpiece.

[0030] In the figure:

[0031] 1┄ base; 2┄ first column; 3┄ second column; 4┄ rotating shaft; 5┄ first locking bolt; 6┄ dividing plate; 7┄ pin hole; 8┄ positioning pin; 9┄ compression spring; 10┄ first shaft section; 11┄ second shaft section; 12┄ third shaft section; 13┄ fourth shaft section; 14┄ limiting nut; 15┄ second locking bolt; 16┄ groove; 17┄ chuck body; 18┄ elastic chuck; 19┄ pressure cover; 20┄ frustum; 21┄ frustum hole; 22┄ ball handle; 23┄ radial blind hole; 24┄ recessed portion. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] Reference Figures 1 to 13 The present invention provides a wire cutting machine tool auxiliary workbench, comprising a base 1, a first column 2 and a second column 3 are fixed on the base 1, and at least two rotating shafts 4 are passed through the common gap between the first column 2 and the second column 3. Figure 1 As shown in the figure, there are 5 rotating shafts 4; the axis of each rotating shaft 4 is arranged horizontally and the axes of all rotating shafts 4 are located in the same vertical plane, and the parts of the rotating shaft 4 located on both sides of the first column 2 are provided with a limiting structure for limiting the axial movement of the rotating shaft 4, and the limiting structure can be a common mechanical structure such as a sleeve and a shoulder; the end of the rotating shaft 4 extending outward from the first column 2 is provided with a mounting structure for mounting a workpiece, and the function of the mounting structure is to mount the workpiece. The specific structure to be adopted depends on the structure of the workpiece to be processed. For example, a three-jaw chuck, an elastic collet 18 and other structures can be adopted, which are easy to design by people in this field; the mounting structure ensures that the workpiece and the rotating shaft are fixed to each other. The shaft 4 is coaxial, and each rotating shaft 4 on the first column 2 is provided with a first locking bolt 5 for locking the rotating shaft 4. The rotating shaft 4 protrudes out of the second column 3 and is partially coaxially spaced with a dividing plate 6, and the rotating shaft 4 is provided with a locking structure for locking the dividing plate 6. The locking structure can adopt commonly used shaft parts fixing structures such as sleeves and shoulders; pin holes 7 are evenly distributed on the dividing plate 6 along the circumference, and the second column 3 is interspersed with positioning pins 8 parallel to the rotating shaft 4. The end of the positioning pin 8 close to the dividing plate 6 is adapted to the pin hole 7 and the diameter is enlarged to form a stepped surface, and a compression spring 9 is provided between the stepped surface and the second column 3 and is sleeved on the positioning pin 8.

[0034] Reference Figure 4As a preferred structure of the limiting structure and the locking structure, the rotating shaft 4 is a three-stage stepped shaft structure consisting of a first shaft section 10, a second shaft section 11, a third shaft section 12 and a fourth shaft section 13 with successively decreasing diameters. The second shaft section 11 is installed in the first column 2 with a gap and the axial length of the second shaft section 11 is the same as the axial thickness of the rotating shaft 4 of the first column 2. The third shaft section 12 is installed in the second column 3. The portion of the third shaft section 12 adjacent to the second shaft section 11 is screwed with a limiting nut 14. The stepped surface between the first shaft section 10 and the second shaft section 11 and the limiting nut 14 are 4 forms the limiting structure. When specifically designed, the outer diameter of the limiting nut 14 must be larger than the diameter of the second shaft segment 11, so that it can play a limiting role, which is well known to those skilled in the art; the indexing plate 6 is sleeved on the fourth shaft segment 13, and the second locking bolt 15 is screwed on the end face of the fourth shaft segment 13. The stepped surface between the third shaft segment 12 and the fourth shaft segment 13 and the second locking bolt 15 form the locking structure. Here, in order to achieve the locking effect of the second locking bolt 15, the axial thickness of the indexing plate 6 must be larger than the axial length of the fourth shaft segment 13, which is well known to those skilled in the art. The above is only the preferred structure of the limiting structure and the locking structure. In other embodiments, a sleeve or a bolt screwed on the rotating shaft 4 can be used for limiting or locking.

[0035] Reference Figure 5-Figure 7 As a preferred structure of the mounting structure, a truncated cone-shaped groove 16 coaxial with the rotating shaft 4 is opened on the end face of the first shaft section 10, and the large diameter end of the groove 16 faces outward. The mounting structure includes a chuck body 17, an elastic chuck 18 and a pressure cover 19. One end of the chuck body 17 is set as a truncated cone portion 20 adapted to the groove 16, and the outer wall of the other end of the chuck body 17 is provided with a thread. A primary stepped hole is coaxially provided in the chuck body 17 and the small diameter hole is close to the rotating shaft 4. The chuck body 17 is locked on the first shaft section 10 by a screw. In specific implementation, the head of the screw abuts on the stepped surface of the primary stepped hole; the large diameter end of the primary stepped hole is expanded outward to form a truncated cone hole 21, and the pressure cover 19 is a barrel-shaped structure with a hole in the center of the bottom. The pressure cover 19 is screwed on the thread of the chuck body 17, and the elastic chuck 18 is embedded in the truncated cone hole 21 and pressed by the bottom of the pressure cover 19. The center hole at the bottom of the pressure cover 19 is used to penetrate the workpiece. This mounting structure is suitable for processing workpieces with a clamping portion at one end, such as Fig.14 The workpiece shown has a clamping portion at one end and 16 slots evenly distributed along the circumference at the other end.

[0036] Reference Figure 5 As a further improvement of the chuck body 17, the middle part of the chuck body 17 is set as a cylindrical section with a diameter larger than the two ends. During installation, the cylindrical section can abut against the end surface of the first shaft section 10 for axial positioning, and the structural stability is stronger.

[0037] Reference Fig. 9 and Fig.10In order to facilitate pulling the positioning pin 8, a ball handle 22 is screwed on the end of the positioning pin 8 that is not matched with the pin hole 7, and the diameter of the ball handle 22 is larger than the positioning pin 8.

[0038] Reference Figure 1 , Figure 2 and Figure 4 To facilitate the rotation of the rotating shaft 4, a plurality of radial blind holes 23 are evenly distributed along the circumference of the second shaft section 11. When in use, a rocker is inserted into the radial blind hole 23, and the rotating shaft 4 is driven to rotate by holding the rocker.

[0039] Reference Figure 1-Figure 3 In order to save the axial length of the rotating shaft 4 , a recess 24 is provided on the surface of the second column 3 opposite to the dividing plate 6 , and a portion of the compression spring 9 is placed in the recess 24 .

[0040] As a preferred shape of the pin hole 7 , the pin hole 7 is a conical hole. The conical hole has an automatic centering effect on the positioning pin 8 , which is more conducive to the smooth insertion of the positioning pin 8 into the pin hole 7 .

[0041] The following is a detailed description of the installation and use steps of the above-mentioned improved and optimized auxiliary workbench, which specifically includes the following steps:

[0042] 1) Place the base 1 fixed with the first column 2 and the second column 3 on the workbench of the wire cutting machine, align the axis of the rotating shaft to be parallel to the X-axis direction of the machine, and tighten with bolts;

[0043] 2) Pass the rotating shaft 4 through the first column 2, sleeve the limiting nut 14 on the rotating shaft 4, and then pass the rotating shaft 4 through the second column 3, and then screw the limiting nut 14 onto the threaded section of the rotating shaft 4 until it abuts against the stepped surface between the second shaft section 11 and the third shaft section 12, so that the rotating shaft 4 can only rotate but not move axially;

[0044] 3) Screw the first locking bolt 5 onto the first column 2, but do not tighten it yet;

[0045] 4) Sleeve the compression spring 9 onto the positioning pin 8, insert the positioning pin 8 into the second column 3, and install the ball handle 22;

[0046] 5) Install the indexing plate 6 on the fourth shaft section 13, screw the second locking bolt 15 onto the end surface of the fourth shaft section 13 so that it contacts the indexing plate 6, but do not tighten it yet;

[0047] 6) Insert the truncated cone portion 20 of the chuck body 17 into the groove 16 on the end face of the first shaft section 10, and then tighten it with a screw, with the head of the screw abutting against the stepped surface of the primary stepped hole of the chuck body 17, and the tip of the screw screwing into the bottom of the groove 16 on the end face of the rotating shaft 4;

[0048] 7) Select a suitable elastic chuck 18 according to the size of the workpiece chuck part and install it in the truncated cone hole 21 of the chuck body 17, screw the gland 19 onto the threaded section of the chuck body 17, and do not tighten it yet;

[0049] 8) Carry out steps 2) to 7) in sequence to assemble the other groups. Now the auxiliary workbench is installed.

[0050] 9) Install each workpiece in each elastic chuck 18 and lock it with the gland 19;

[0051] 10) Tighten the first locking nut to prevent the shaft 4 from rotating;

[0052] 11) Pull the positioning pin 8 so that the end of the positioning pin 8 fits into one of the pin holes of the indexing plate 6, so that the angle is initialized to zero at this time;

[0053] 12) Tighten the second locking bolt 15 to fix the indexing plate 6 and the rotating shaft 4;

[0054] 13) Start the machine tool, and process the two vertical slots at the same time, and all parts are processed at the same time;

[0055] 14) After processing the first group of notches, loosen the first locking bolt 5, pull out the positioning pin 8, rotate the rotating shaft 4, so that the next pin hole 7 of the indexing plate 6 cooperates with the positioning pin 8 to achieve indexing, and then lock the first locking bolt 5 to process the second group of notches. Similarly, process other groups of notches, so that multiple parts can be processed simultaneously.

[0056] The same or similar numbers in the drawings of the embodiments correspond to the same or similar parts; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0057] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A wire cutting machine tool auxiliary workbench, characterized in that: The invention comprises a base (1), a first column (2) and a second column (3) are fixed on the base (1), at least two rotating shafts (4) are passed through a common gap between the first column (2) and the second column (3), the axis of each rotating shaft (4) is arranged horizontally and the axes of all the rotating shafts (4) are located on the same vertical plane, the rotating shafts (4) are provided with a limiting structure for limiting the axial movement of the rotating shafts (4) at the parts located on both sides of the first column (2), the ends of the rotating shafts (4) extending outward from the first column (2) are provided with a mounting structure for mounting a workpiece, the mounting structure ensures that the workpiece and the rotating shaft (4) are coaxial, the first column (2) is provided with a first locking bolt (5) for locking the rotating shaft (4), the rotating shaft (4) extending outward from the coaxial part of the second column (3) is provided with a first locking bolt (5) for locking the rotating shaft (4), and the rotating shaft (4) is provided with a first locking bolt (5) for locking the rotating shaft (4). The rotating shaft (4) is provided with a dividing plate (6) in a gap sleeve, and a locking structure for locking the dividing plate (6) is provided on the rotating shaft (4), and pin holes (7) are evenly distributed along the circumference of the dividing plate (6). A positioning pin (8) parallel to the rotating shaft (4) is inserted through the second column (3), and the end of the positioning pin (8) close to the dividing plate (6) is adapted to the pin hole (7) and the diameter is enlarged to form a stepped surface, and a compression spring (9) sleeved on the positioning pin (8) is provided between the stepped surface and the second column (3); the rotating shaft (4) is a three-stage stepped shaft structure composed of a first shaft section (10), a second shaft section (11), a third shaft section (12) and a fourth shaft section (13) with successively decreasing diameters, and the second shaft section (11) is gap-mounted in the first column (2) and the axial length of the second shaft section (11) is The thickness of the rotating shaft (4) in the axial direction is the same as that of the first column (2); the third shaft section (12) is inserted into the second column (3); a portion of the third shaft section (12) adjacent to the second shaft section (11) is screwed with a limiting nut (14); the stepped surface between the first shaft section (10) and the second shaft section (11) and the limiting nut (14) form the limiting structure; the indexing plate (6) is sleeved on the fourth shaft section (13) in a gap; a second locking bolt (15) is screwed on the end surface of the fourth shaft section (13); the stepped surface between the third shaft section (12) and the fourth shaft section (13) and the second locking bolt (15) form the locking structure; the end surface of the first shaft section (10) is provided with a truncated cone-shaped groove (16) coaxial with the rotating shaft (4); the groove (16) The large diameter end of the chuck body (17) faces outward, and the mounting structure comprises a chuck body (17), an elastic chuck (18) and a pressure cover (19). One end of the chuck body (17) is set as a truncated cone portion (20) adapted to the groove (16), and the outer wall of the other end of the chuck body (17) is provided with a thread. A primary stepped hole is coaxially provided in the chuck body (17), and the small diameter hole is close to the rotating shaft (4). The chuck body (17) is locked on the first shaft section (10) by screws. The large diameter end of the primary stepped hole is expanded outward to form a truncated cone hole (21). The pressure cover (19) is a barrel-shaped structure with a hole in the center of the bottom. The pressure cover (19) is screwed onto the thread of the chuck body (17). The elastic chuck (18) is embedded in the truncated cone hole (21) and is pressed by the bottom of the pressure cover (19). The center hole at the bottom of the pressure cover (19) is used to pass the workpiece;A recess (24) is provided on the surface of the second column (3) opposite to the indexing plate (6), and a portion of the compression spring (9) is disposed in the recess (24). ; 2. The auxiliary workbench of a wire cutting machine tool according to claim 1, characterized in that: The middle part of the chuck body (17) is configured as a cylindrical section and has a diameter greater than that of the two end parts.

3. A wire cutting machine tool auxiliary workbench according to claim 1 or 2, characterized in that: A ball handle (22) is screwed onto the end of the positioning pin (8) that is not matched with the pin hole (7), and the diameter of the ball handle (22) is larger than that of the positioning pin (8).

4. The auxiliary workbench of a wire cutting machine tool according to claim 1 or 2, characterized in that: The second shaft section (11) is provided with a plurality of radial blind holes (23) evenly distributed along its circumference.

5. The auxiliary workbench of a wire cutting machine tool according to claim 1, characterized in that: The pin hole (7) is a tapered hole.

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