Self-locking clamp disc for numerical control machine tool

Abstract

The utility model relates to the field of numerical control machine tools, in particular to a self-locking clamp disc for a numerical control machine tool. The self-locking clamp disc comprises a chuck, arc-shaped frame plates are symmetrically installed on the left side and the right side of the chuck, a limiting ring is arranged above the chuck and fixedly connected with the upper ends of the two arc-shaped frame plates, and a cavity is formed between the limiting ring and the chuck and used for containing a clamping device. A self-locking driving set is installed at the rear end of the clamping device, and a driving device is fixedly installed on the self-locking driving set. When the clamping device is used, the two female seat sleeve plates draw close to each other in the axial direction of the threaded rod, and the two female seat sleeve plates drive the bevel plates to get close to each other respectively, so that a limiting sliding groove in the upper end face of a limiting bottom ring forces a second limiting clamping plate on a second positioning column to clamp a non-equilateral part to be clamped in a limiting hole; and a limiting sliding groove in the lower end face of a limiting top ring forces a first limiting clamping plate below a first positioning column to clamp the non-equilateral to-be-clamped piece in a limiting hole, so that sub-control clamping of the two sets of clamps is controlled, and the stability and adaptability of the self-locking clamp disc are improved.

Description

Technical Field

[0001] The utility model relates to the field of numerical control machine tools, in particular to a self-locking fixture disk for a numerical control machine tool. Background Technique

[0002] A numerical control machine tool, abbreviated as a CNC machine tool, is an automated machine tool equipped with a program control system. This control system can logically process a program with control codes or other symbolic instructions, decode it, represent it in coded numbers, input it into the numerical control device through an information carrier, and after arithmetic processing, the numerical control device issues various control signals to control the actions of the machine tool, and automatically processes parts according to the shape and size required by the drawing.

[0003] In the prior art, during the part processing of a numerical control machine tool, the part is usually fixed on a fixture on the numerical control machine tool, and the clamping device on the fixture firmly fixes the part to prevent the part from shaking, so that the numerical control machine tool cannot normally complete the processing. However, the clamping devices on most fixtures are driven synchronously. When clamping non-equilateral rectangles and non-equilateral polygons, it is impossible to ensure the stability of the object to be clamped. Therefore, those skilled in the art have provided a self-locking fixture disk for a numerical control machine tool to solve the problems raised in the above background technique. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a self-locking fixture disk for a numerical control machine tool, including a chuck. Arc-shaped frame plates are symmetrically installed on the left and right sides of the chuck. A limit ring is arranged above the chuck, and the limit ring is fixedly connected to the upper ends of the two arc-shaped frame plates. A cavity is arranged between the limit ring and the chuck for placing a clamping device. A self-locking drive group is installed at the rear end of the clamping device, and a driving device is fixedly installed on the self-locking drive group;

[0005] The clamping device includes a positioning ring plate, a fixing plate, a limiting hole, a first limiting clamping plate, a first positioning column, a second limiting clamping plate, a second positioning column, a limiting bottom ring, a limiting top ring, a limiting clamping ring and a limiting sliding groove. On the middle of the mutually approaching end faces of the two arc-shaped frame plates, fixing plates are fixedly installed. A positioning ring plate is connected and installed between the two fixing plates. Four limiting holes are equidistantly and annularly opened on the side end of the positioning ring plate. In the two limiting holes that are symmetrical left and right of the positioning ring plate, slidable first limiting clamping plates are arranged. On the upper end faces of the two first limiting clamping plates, first positioning columns are fixedly installed. The two first positioning columns are arranged symmetrically with the center of the upper end face of the positioning ring plate as the center. In the two limiting holes that are symmetrical front and back of the positioning ring plate, slidable second limiting clamping plates are arranged. On the upper end faces of the two second limiting clamping plates, second positioning columns are fixedly installed. The two second positioning columns are arranged symmetrically with the center of the lower end face of the positioning ring plate as the center. A limiting bottom ring is arranged between the positioning ring plate and the chuck, and a limiting top ring is arranged between the positioning ring plate and the limiting ring. On the left and right sides of the end face of the limiting bottom ring close to the positioning ring plate and on the front and back sides of the end face of the limiting top ring close to the positioning ring plate, limiting sliding grooves are symmetrically opened at the center. The limiting sliding grooves on the limiting bottom ring are correspondingly arranged to slide with the second positioning columns, and the limiting sliding grooves on the limiting top ring are correspondingly arranged to slide with the first positioning columns;

[0006] The self-locking drive group includes a folding angle plate, a fixing bolt, a female seat sleeve plate and a threaded rod. Folding angle plates are fixedly installed at the rear ends of the limiting top ring and the limiting bottom ring. The two folding angle plates on the limiting top ring and the limiting bottom ring are arranged symmetrically up and down. An activatable fixing bolt is arranged on the folding angle plate. A female seat sleeve plate is sleeved on the fixing bolt. The female seat sleeve plate and the folding angle plate are freely rotatable around the fixing bolt. The two female seat sleeve plates on the limiting top ring and the limiting bottom ring are arranged symmetrically up and down. The two folding angle plates on the limiting top ring and the limiting bottom ring are staggered to form an acute angle. The two female seat sleeve plates are both sleeved on the same threaded rod.

[0007] Preferably: A fixing disk seat is fixedly installed at the lower end of the chuck. The chuck is fixedly installed on the numerical control machine through the fixing disk seat and bolts.

[0008] Preferably: Limiting clamping rings are fixedly installed at the middle of the lower end face of the limiting bottom ring and the upper end face of the limiting top ring. The limiting clamping ring fixed on the limiting bottom ring is rotatably arranged in the notch on the upper end face of the chuck, and the limiting clamping ring fixed on the limiting top ring is rotatably arranged in the ring of the limiting ring.

[0009] Preferably: The driving device includes a motor seat, a servo motor, a sleeve rod and a limiting column. A servo motor is fixedly installed at the front end of the motor seat. Two limiting columns that are symmetrically up and down are fixedly installed on the left end face of the servo motor.

[0010] Preferably: A sleeve rod is sleeved on the limiting column. The two sleeve rods are fixedly installed on the upper and lower end faces of the female seat sleeve plate connected to the rear side of the limiting bottom ring.

[0011] Preferably, the left output shaft of the servo motor is fixedly connected to the threaded rod. When the servo motor drives the threaded rod to rotate, the threaded rod meshes with the female seat sleeve plate, causing the female seat sleeve plate to reciprocate on the threaded rod. By sliding the sleeve rod and the limiting column, the servo motor will not deflect, and at the same time, it ensures that the self-locking drive group can move normally.

[0012] The technical effects and advantages of the present utility model:

[0013] 1. When the present utility model is in use, the servo motor drives the threaded rod to rotate. The threaded rod meshes with the female seat sleeve plate, causing the female seat sleeve plate to reciprocate on the threaded rod. By sliding the sleeve rod and the limiting column, the servo motor will not deflect, and at the same time, it ensures that the self-locking drive group can move normally.

[0014] 2. When the present utility model is in use, by moving two female seat sleeve plates closer to each other along the axial direction of the threaded rod, the two female seat sleeve plates will respectively drive the folding angle plates closer to each other, causing the limiting chute on the upper end surface of the limiting bottom ring to force the upper limiting clamping plate II on the positioning column II to clamp the non-equilateral workpiece to be clamped in the limiting hole, and the limiting chute on the lower end surface of the limiting top ring to force the lower limiting clamping plate I on the positioning column I to clamp the non-equilateral workpiece to be clamped in the limiting hole, thereby controlling the separate clamping of the two groups of clamps, ensuring firm clamping and increasing the adaptability of the self-locking clamp disc. Description of the Drawings

[0015] Figure 1 is the structural schematic diagram provided by this application;

[0016] Figure 2 is the structural schematic diagram of the clamping device provided by this application;

[0017] Figure 3 is the structural schematic diagram of the self-locking drive group provided by this application;

[0018] In the figure: 1, fixed disc seat; 2, chuck; 3, arc-shaped frame plate; 4, limiting ring; 5, clamping device; 6, self-locking drive group; 7, drive device;

[0019] 51, positioning ring plate; 52, fixing plate; 53, limiting hole; 54, lower limiting clamping plate I; 55, positioning column I; 56, upper limiting clamping plate II; 57, positioning column II; 58, limiting bottom ring; 59, limiting top ring; 510, limiting clamping ring; 511, limiting chute;

[0020] 61, folding angle plate; 62, fixing bolt; 63, female seat sleeve plate; 64, threaded rod;

[0021] 71, motor seat; 72, servo motor; 73, sleeve rod; 74, limiting column. Detailed Embodiment

[0022] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present utility model are given for the purpose of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

[0023] Please refer to Figures 1 to 3 , in this embodiment, a self-locking fixture disk for a numerical control machine tool is provided, which includes a chuck 2. A fixed disk seat 1 is fixedly installed at the lower end of the chuck 2. The chuck 2 is fixedly installed on the numerical control machine through the fixed disk seat 1 and bolts. Arc-shaped frame plates 3 are symmetrically installed on the left and right sides of the chuck 2. A limit ring 4 is arranged above the chuck 2. The limit ring 4 is fixedly connected to the upper ends of the two arc-shaped frame plates 3. A cavity is arranged between the limit ring 4 and the chuck 2 for placing a clamping device 5. A self-locking drive group 6 is installed at the rear end of the clamping device 5. A driving device 7 is fixedly installed on the self-locking drive group 6;

[0024] The clamping device 5 includes a positioning ring plate 51, a fixing plate 52, a limiting hole 53, a first limiting clamping plate 54, a first positioning column 55, a second limiting clamping plate 56, a second positioning column 57, a limiting bottom ring 58, a limiting top ring 59, a limiting clamping ring 510 and a limiting sliding groove 511. On the middle of the mutually approaching end faces of the two arc-shaped frame plates 3, fixing plates 52 are fixedly installed. A positioning ring plate 51 is connected and installed between the two fixing plates 52. Four limiting holes 53 are equidistantly and annularly formed on the side end of the positioning ring plate 51. A slidable first limiting clamping plate 54 is arranged in the two left-right symmetric limiting holes 53 of the positioning ring plate 51. First positioning columns 55 are fixedly installed on the upper end faces of the two first limiting clamping plates 54. The two first positioning columns 55 are arranged symmetrically with the center of the upper end face of the positioning ring plate 51 as the center. A slidable second limiting clamping plate 56 is arranged in the two front-back symmetric limiting holes 53 of the positioning ring plate 51. Second positioning columns 57 are fixedly installed on the upper end faces of the two second limiting clamping plates 56. The two second positioning columns 57 are arranged symmetrically with the center of the lower end face of the positioning ring plate 51 as the center. A limiting bottom ring 58 is arranged between the positioning ring plate 51 and the chuck 2. A limiting top ring 59 is arranged between the positioning ring plate 51 and the limiting ring 4. Limiting clamping rings 510 are fixedly installed on the middle of the lower end face of the limiting bottom ring 58 and the upper end face of the limiting top ring 59. The limiting clamping ring 510 fixed on the limiting bottom ring 58 is rotatably arranged in the notch on the upper end face of the chuck 2. The limiting clamping ring 510 fixed on the limiting top ring 59 is rotatably arranged in the ring of the limiting ring 4. Limiting sliding grooves 511 are symmetrically formed at the center of the left and right sides of the end face of the limiting bottom ring 58 close to the positioning ring plate 51 and the front and back sides of the end face of the limiting top ring 59 close to the positioning ring plate 51. The limiting sliding grooves 511 on the limiting bottom ring 58 are correspondingly arranged and slid with the second positioning columns 57. The limiting sliding grooves 511 on the limiting top ring 59 are correspondingly arranged and slid with the first positioning columns 55;

[0025] The self-locking drive group 6 includes a folding angle plate 61, a fixing bolt 62, a female seat sleeve plate 63 and a threaded rod 64. Folding angle plates 61 are fixedly installed at the rear ends of the limiting top ring 59 and the limiting bottom ring 58. The two folding angle plates 61 on the limiting top ring 59 and the limiting bottom ring 58 are arranged symmetrically up and down. Movable fixing bolts 62 are arranged on the folding angle plates 61. Female seat sleeve plates 63 are sleeved on the fixing bolts 62. The female seat sleeve plates 63 and the folding angle plates 61 are freely rotatable around the fixing bolts 62. The two female seat sleeve plates 63 on the limiting top ring 59 and the limiting bottom ring 58 are arranged symmetrically up and down. The two folding angle plates 61 on the limiting top ring 59 and the limiting bottom ring 58 are staggered to form an acute angle. The two female seat sleeve plates 63 are both sleeved on the same threaded rod 64;

[0026] The driving device 7 includes a motor base 71, a servo motor 72, a sleeve rod 73 and a limit post 74. The servo motor 72 is fixedly installed at the front end of the motor base 71. Two symmetrically arranged upper and lower limit posts 74 are fixedly installed on the left end face of the servo motor 72. The sleeve rod 73 is sleeved on the limit post 74. The two sleeve rods 73 are fixedly installed on the upper and lower end faces of the female seat sleeve plate 63 connected to the rear side of the limit bottom ring 58. The left end output shaft of the servo motor 72 is fixedly connected to the threaded rod 64. When the servo motor 72 drives the threaded rod 64 to rotate, the threaded rod 64 meshes with the female seat sleeve plate 63, so that the female seat sleeve plate 63 reciprocates on the threaded rod 64. By sliding the sleeve rod 73 and the limit post 74, while the servo motor 72 will not deflect, it ensures that the self-locking drive group 6 can move normally.

[0027] The working principle of the present utility model is as follows:

[0028] When the present utility model is in use, the non-equilateral workpiece to be clamped is placed in the clamping device 5. The servo motor 72 is driven to drive the threaded rod 64 to rotate. The threaded rod 64 meshes with the two female seat sleeve plates 63. The two female seat sleeve plates 63 approach each other along the axial direction of the threaded rod 64. At this time, after the two female seat sleeve plates 63 rotate around the fixing bolt 62 to the limit position, then the two female seat sleeve plates 63 will respectively drive the folding plates 61 to approach each other. The limit bottom ring 58 is restricted by the lower limit clamping ring 510 to rotate in the notch on the upper end face of the chuck 2, so that the limit sliding groove 511 on the upper end face of the limit bottom ring 58 forces the upper limit clamping plate 56 on the positioning post two 57 to clamp the non-equilateral workpiece to be clamped in the limit hole 53. The limit top ring 59 is restricted by the upper limit clamping ring 510 to rotate in the ring of the limit ring 4, so that the limit sliding groove 511 on the lower end face of the limit top ring 59 forces the lower limit clamping plate 54 on the positioning post one 55 to clamp the non-equilateral workpiece to be clamped in the limit hole 53. Furthermore, in the process of the upper limit clamping plate 56 and the lower limit clamping plate 54 clamping in the center, the uncompletely clamped clamping plate can rotate around the fixing bolt 62 on the folding plate 61 through the female seat sleeve plate 63, realizing the continuous rotation of the limit top ring 59 / limit bottom ring 58 on the folding plate 61 until the clamping work of the uncompletely clamped clamping plate on the non-equilateral workpiece to be clamped is completed, ensuring firm clamping and increasing the adaptability of the self-locking fixture plate.

[0029] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art and related fields without creative work shall fall within the protection scope of the present utility model. The structures, devices and operation methods not specifically described and explained in the present utility model, unless otherwise specified and limited, shall be implemented according to the conventional means in the art.

Claims

1. A self-locking fixture disc for a numerical control machine tool, comprising a chuck (2), characterized in that, Arc-shaped frame plates (3) are symmetrically installed on the left and right sides of the chuck (2). A limiting ring (4) is arranged above the chuck (2). The limiting ring (4) is fixedly connected to the upper ends of the two arc-shaped frame plates (3). A cavity is arranged between the limiting ring (4) and the chuck (2) for placing a clamping device (5). A self-locking drive group (6) is installed at the rear end of the clamping device (5), and a driving device (7) is fixedly installed on the self-locking drive group (6). The clamping device (5) includes a positioning ring plate (51), a fixing plate (52), a limiting hole (53), a first limiting clamping plate (54), a first positioning column (55), a second limiting clamping plate (56), a second positioning column (57), a limiting bottom ring (58), a limiting top ring (59), a limiting clamping ring (510), and a limiting sliding groove (511). Fixing plates (52) are fixedly installed in the middle of the mutually approaching end faces of the two arc-shaped frame plates (3). A positioning ring plate (51) is connected and installed between the two fixing plates (52). Four limiting holes (53) are equidistantly and annularly formed in the side end of the positioning ring plate (51). First limiting clamping plates (54) that can slide are arranged in two symmetrically left and right limiting holes (53) of the positioning ring plate (51). First positioning columns (55) are fixedly installed on the upper end faces of the two first limiting clamping plates (54). The two first positioning columns (55) are symmetrically arranged with the center of the upper end face of the positioning ring plate (51) as the center. Second limiting clamping plates (56) that can slide are arranged in two symmetrically front and back limiting holes (53) of the positioning ring plate (51). Second positioning columns (57) are fixedly installed on the upper end faces of the two second limiting clamping plates (56). The two second positioning columns (57) are symmetrically arranged with the center of the lower end face of the positioning ring plate (51) as the center. A limiting bottom ring (58) is arranged between the positioning ring plate (51) and the chuck (2), and a limiting top ring (59) is arranged between the positioning ring plate (51) and the limiting ring (4). Limiting sliding grooves (511) are symmetrically formed in the left and right sides of the end face of the limiting bottom ring (58) close to the positioning ring plate (51) and the front and back sides of the end face of the limiting top ring (59) close to the positioning ring plate (51). The limiting sliding grooves (511) on the limiting bottom ring (58) are correspondingly arranged and slid with the second positioning columns (57), and the limiting sliding grooves (511) on the limiting top ring (59) are correspondingly arranged and slid with the first positioning columns (55). The self-locking drive group (6) includes a folding angle plate (61), a fixing bolt (62), a female seat sleeve plate (63) and a threaded rod (64). Folding angle plates (61) are fixedly installed at the rear ends of both the limiting top ring (59) and the limiting bottom ring (58). The two folding angle plates (61) on the limiting top ring (59) and the limiting bottom ring (58) are symmetrically arranged up and down. A movable fixing bolt (62) is arranged on the folding angle plate (61). A female seat sleeve plate (63) is sleeved on the fixing bolt (62). The female seat sleeve plate (63) can freely rotate around the fixing bolt (62) with respect to the folding angle plate (61). The two female seat sleeve plates (63) on the limiting top ring (59) and the limiting bottom ring (58) are symmetrically arranged up and down. The two folding angle plates (61) on the limiting top ring (59) and the limiting bottom ring (58) are staggered to form an acute angle. Both female seat sleeve plates (63) are sleeved on the same threaded rod (64).

2. The self-locking fixture disk for a numerically controlled machine tool according to claim 1, wherein A fixing disk seat (1) is fixedly installed at the lower end of the chuck (2). The chuck (2) is fixedly installed on the numerical control machine through the fixing disk seat (1) and bolts.

3. The self-locking fixture disk for a numerically controlled machine tool according to claim 1, wherein, Limit retaining rings (510) are fixedly installed in the middle of the lower end face of the limiting bottom ring (58) and the upper end face of the limiting top ring (59). The limit retaining ring (510) fixed on the limiting bottom ring (58) is rotatably arranged in the notch on the upper end face of the chuck (2). The limit retaining ring (510) fixed on the limiting top ring (59) is rotatably arranged in the ring of the limiting ring (4).

4. The self-locking fixture plate for a numerical control machine tool according to claim 1, wherein, The driving device (7) includes a motor seat (71), a servo motor (72), a sleeve rod (73) and a limiting column (74). The servo motor (72) is fixedly installed at the front end of the motor seat (71). Two symmetrically arranged limiting columns (74) are fixedly installed on the left end face of the servo motor (72).

5. The self-locking fixture plate for a numerically controlled machine tool according to claim 4, wherein, The sleeve rod (73) is sleeved on the limiting column (74). The two sleeve rods (73) are fixedly installed on the upper and lower end faces of the female seat sleeve plate (63) connected to the rear side of the limiting bottom ring (58).

6. The self-locking fixture disk for a numerical control machine tool according to claim 5, wherein, The left end output shaft of the servo motor (72) is fixedly connected to the threaded rod (64).

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