Workpiece positioning and clamping device of numerical control machine tool

Abstract

A switching device comprises a through groove, the through groove is formed in the surface of one side of the horizontal end of a U-shaped supporting base, a sliding rod is fixedly installed between the inner walls of the two sides of the through groove, the surface of the sliding rod is connected with two movable plates in a sliding mode, and the end, away from a T-shaped base, of a hinged plate is hinged to the movable plates. And vertical strip plates are fixedly mounted on the surfaces of one sides of the two movable plates, vertical grooves are formed in the surfaces of the two vertical strip plates, two sliding strip plates are slidably connected into the vertical grooves, and positioning sleeves and arc-shaped clamping plates are fixedly mounted on the surfaces of the ends, away from the vertical grooves, of the two sliding strip plates correspondingly. The workpiece positioning and clamping device solves the problems that when an existing workpiece positioning and clamping device of the numerical control machine tool is used for machining workpieces with different lengths, corresponding clamps need to be installed after original clamps are detached, and the detaching and installing processes are very tedious, and the workpiece positioning and clamping device is used for the field of machine tool machining equipment.

Description

Technical Field

[0001] The utility model belongs to the field of machine tool processing equipment, and more specifically relates to a workpiece positioning and clamping device for a numerically controlled machine tool. Background Art

[0002] CNC machine tool is the abbreviation of digitally controlled machine tool. It is an automated machine tool equipped with a program control system. CNC machine tool needs to position the workpiece when processing it, and the workpiece will be positioned through a clamping device.

[0003] The existing announcement number is CN220680468U, which is a workpiece positioning and clamping device for CNC machine tools. This patent uses positioning pins to position each workpiece to the same position on the processing seat. The clamping parts clamp the workpiece in all directions to increase the stability of the clamping and prevent the workpiece from shifting during processing and grinding. A spring group and buffer block are installed on the inside of the clamping parts to provide a certain buffer for the clamping force, clamping the workpiece while avoiding excessive clamping force to damage the workpiece.

[0004] The inventors found in their daily work that when the above-mentioned CNC machine tool workpiece positioning and clamping device processes workpieces of different lengths, it is necessary to dismantle the original fixture and install the corresponding fixture. The disassembly and installation process is very cumbersome, resulting in a large number of fixtures that are difficult to manage, high fixture costs, and low production efficiency. Utility Model Content

[0005] The main purpose of the utility model is to provide a workpiece positioning and clamping device for a numerically controlled machine tool.

[0006] According to the first aspect of the present invention, there is provided a workpiece positioning and clamping device for a numerically controlled machine tool, comprising a U-shaped support seat, an L-shaped plate fixedly mounted on the surface of the U-shaped support seat, an electric telescopic rod fixedly mounted on the top inner wall surface of the L-shaped plate, a T-shaped seat fixedly mounted on the output end of the electric telescopic rod, two hinged plates hinged on the bottom surface of the T-shaped seat, a switching device provided on one side surface of the horizontal end of the U-shaped support seat, the switching device comprising a through slot, the through slot being provided on one side surface of the horizontal end of the U-shaped support seat, a sliding rod fixedly mounted between the inner walls on both sides of the through slot, the surface of the sliding rod being slidably connected to two movable plates, the hinged plate being hinged to the movable plate at one end away from the T-shaped seat, and vertical strips fixedly mounted on one side surface of the two movable plates. The provision of the sliding rod and the movable plate allows the vertical strips to move.

[0007] According to the CNC machine tool workpiece positioning and clamping device described in the first embodiment of the utility model, the surfaces of the two vertical strips are each provided with a vertical groove, two slide strips are slidably connected within the vertical grooves, and a positioning sleeve and an arc-shaped clamping plate are fixedly mounted on the end surfaces of the two slide strips away from the vertical grooves. The arrangement of the arc-shaped clamping plate and the positioning sleeve achieves the effect of positioning and clamping a circular workpiece.

[0008] According to the CNC machine tool workpiece positioning and clamping device described in the embodiment of the first aspect of the utility model, a groove is formed on one side surface of each of the slide plates, a slide plate is slidably connected to the interior of the groove, a limiting rod is fixedly installed on the surface of the slide plate, and a plurality of limiting holes are evenly formed on the surfaces of the two vertical strips, a rectangular plate is fixedly installed on one side surface of each of the slide plates, and a spring is fixedly installed between the rectangular plate and the slide plate. The provision of the limiting rod and the limiting hole has the effect of limiting the position of the slide plate within the vertical groove.

[0009] According to the CNC machine tool workpiece positioning and clamping device described in the embodiment of the first aspect of the utility model, a limiting device is provided on one side surface of each of the two vertical strips, and the limiting device includes four U-shaped plates, each of which is fixedly mounted on one side surface of the two vertical strips in a group of two. A threaded rod is rotatably connected between the inner walls of both ends of the two U-shaped plates, and a rotating wheel is fixedly mounted on one end of the threaded rod. The provision of the rotating wheel has the effect of driving the threaded rod to rotate.

[0010] According to the CNC machine tool workpiece positioning and clamping device described in the first embodiment of the present invention, vertical rods are fixedly installed between the inner walls of the two ends of the other two U-shaped plates, and the surfaces of the threaded rods are threadedly connected to the T-shaped plates. The provision of the threaded rods has the effect of driving the T-shaped plates to move on the surfaces of the vertical rods.

[0011] According to the CNC machine tool workpiece positioning and clamping device described in the first embodiment of the present invention, a bolt is threadedly connected to the surface of the T-shaped plate, and an extension plate is fixedly mounted on one side surface of the U-shaped support seat. The arrangement of the bolt and the extension plate serves to restrict the movement of the vertical strip.

[0012] One of the above technical solutions of the utility model has at least one of the following advantages or beneficial effects:

[0013] In this CNC machine tool workpiece positioning and clamping device, a switching device is set up, so that the device can select the corresponding positioning sleeve and arc-shaped clamping plate to position and clamp the side and end faces of the circular workpiece according to the length of the circular workpiece. Only one equipment is needed to achieve two types of positioning and clamping of the circular workpiece, saving the factory's equipment investment cost; by setting a limiting device, the position of the vertical strip after adjustment can be further limited, thereby improving the positioning and clamping effect of the arc-shaped clamping plate and the positioning sleeve on the circular workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0016] Figure 2 This is a left-side structural schematic diagram of an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the right side of the embodiment of the utility model;

[0018] Figure 4 In the embodiment of the present utility model Figure 1 Structural diagram at A;

[0019] Figure 5 In the embodiment of the present utility model Figure 2 Schematic diagram of the structure at point B. DETAILED DESCRIPTION

[0020] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do 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, they cannot be understood as limitations on the present invention.

[0022] In the description of the utility model, if several meanings are one or more, the meaning of multiple is two or more, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number.If it is described to the first, the second is only used for distinguishing the technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0023] In addition, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features.

[0024] In the description of the utility model, it is necessary to point out that, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection or movable connection, can be detachable connection or non-detachable connection, or integrally connected;It can be mechanical connection, or electrical connection or can communicate with each other;It can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements, indirect communication or the interaction relationship of two elements.

[0025] The following disclosure provides many different embodiments or examples to realize different schemes of the utility model.

[0026] Referring to Figures 1 to 5 As shown in the figure, a workpiece positioning and clamping device of numerical control machine tool is provided, which comprises a U-shaped support seat 1, a L-shaped plate 4 is fixedly installed on the surface of the U-shaped support seat 1, an electric telescopic rod 5 is fixedly installed on the top inner wall surface of the L-shaped plate 4, a T-shaped seat 6 is fixedly installed on the output end of the electric telescopic rod 5, and two hinged plates 7 are hinged on the bottom surface of the T-shaped seat 6.

[0027] In some embodiments of the utility model, the side surface of the horizontal end of the U-shaped support seat 1 is provided with a switching device 2, the switching device 2 comprises a through slot 201, the through slot 201 is arranged on the side surface of the horizontal end of the U-shaped support seat 1, a sliding rod 202 is fixedly installed between the two side inner walls of the through slot 201, two moving plates 203 are slidably connected on the surface of the sliding rod 202, one end of the hinged plate 7 away from the T-shaped seat 6 is hinged with the moving plate 203, and a vertical strip plate 204 is fixedly installed on the side surface of the two moving plates 203.

[0028] In some embodiments of the present invention, the arrangement of the slide bar 202 and the movable plate 203 allows the vertical strips 204 to move. Each vertical strip 204 has a vertical groove 205 formed on its surface. Two slide strips 206 are slidably connected within the grooves 205. A positioning sleeve 207 and an arc-shaped clamping plate 208 are fixedly mounted on the ends of the two slide strips 206 away from the grooves 205.

[0029] In some embodiments of the present invention, the arrangement of the arc-shaped clamping plate 208 and the positioning sleeve 207 serves to position and clamp a circular workpiece. A groove 209 is provided on one side of each slide plate 206, and a slide plate 210 is slidably connected to the interior of the groove 209. A limiting rod 211 is fixedly mounted on the surface of the slide plate 210. Multiple limiting holes 212 are evenly arranged on the surfaces of the two vertical strips 204. A rectangular plate 213 is fixedly mounted on one side of each slide plate 206, and a spring 214 is fixedly mounted between the rectangular plate 213 and the slide plate 210. The arrangement of the limiting rod 211 and the limiting hole 212 serves to limit the position of the slide plate 206 within the vertical slot 205.

[0030] In some embodiments of the present invention, a limiting device 3 is provided on one side surface of the two vertical strips 204, and the limiting device 3 includes four U-shaped plates 31, and the four U-shaped plates 31 are fixedly installed on one side surface of the two vertical strips 204 in a group of two, wherein a threaded rod 32 is rotatably connected between the inner walls of both ends of the two U-shaped plates 31, and a rotating wheel 33 is fixedly installed on one end port of the threaded rod 32.

[0031] When it is necessary to limit the position of the adjusted vertical strip 204, after the vertical strip 204 drives the arc clamping plate 208 or the positioning sleeve 207 to position and clamp the circular workpiece, the wheel 33 can be rotated, and the rotation of the wheel 33 drives the threaded rod 32 to rotate. The rotation of the threaded rod 32 drives the T-shaped plate 35 to move on the surface of the vertical rod 34, and the movement of the T-shaped plate 35 on the surface of the vertical rod 34 drives the bolt 36 to move. When the position of the bolt 36 moves so that it fits the surface of the extension plate 37, the bolt 36 is tightened at this time and screwed into the inside of the extension plate 37, thereby completing the limitation of the position of the vertical strip 204. Through the cooperation of the above structure, the adjusted position of the vertical strip 204 can be further limited, thereby improving the positioning and clamping effect of the arc clamping plate 208 and the positioning sleeve 207 on the circular workpiece.

[0032] A vertical rod 34 is fixedly installed between the inner walls of both ends of the other two U-shaped plates 31 , and a T-shaped plate 35 is threadedly connected to the surface of the threaded rod 32 .

[0033] In some embodiments of the utility model, the threaded rod 32 is arranged to drive the T-shaped plate 35 to move on the surface of the vertical rod 34. The T-shaped plate 35 is threadedly connected with the bolt 36, and the extension plate 37 is fixedly installed on one side surface of the U-shaped support seat 1.

[0034] In some embodiments of the utility model, the bolt 36 and the extension plate 37 are arranged to limit the movement of the vertical strip plate 204.

[0035] When the two ends of the short circular workpiece need to be clamped and fixed, the short circular workpiece is first placed horizontally and transversely between the two positioning sleeves 207, and then the electric telescopic rod 5 is started to drive the T-shaped seat 6 to move, the T-shaped seat 6 moves to drive the hinged plate 7 to move, the hinged plate 7 moves to pull the two moving plates 203 to move on the surface of the slide rod 202 towards each other, the two moving plates 203 move on the surface of the slide rod 202 towards each other to drive the two vertical strip plates 204 to move towards each other, and the two vertical strip plates 204 move towards each other to finally drive the two positioning sleeves 207 to move towards each other, so that the two positioning sleeves 207 clamp the two ends of the short circular workpiece.

[0036] When the long circular workpiece needs to be clamped and fixed, the slide plate 210 is first slid to move inside the groove 209, the slide plate 210 moves inside the groove 209 to press the spring 214, so that the spring 214 is compressed under stress, and the slide plate 210 moving inside the groove 209 also drives the limiting rod 211 to move, the limiting rod 211 moves to move out of the limiting hole 212, and the separation of the limiting rod 211 and the limiting hole 212 makes the slide strip plate 206 lose the limiting inside the vertical slot 205, so that the slide strip plate 206 can be moved to move inside the vertical slot 205, and the slide strip plate 206 moves inside the vertical slot 205 to drive the positioning sleeve 207 to move.

[0037] When the positioning sleeve 207 moves to the appropriate height, the slide plate 210 is loosened, the spring 214 is used to make the limiting rod 211 reinserted into the corresponding limiting hole 212, so as to fix the position of the slide strip plate 206 inside the vertical slot 205, then the slide plate 210 on the slide strip plate 206 is slid on the arc-shaped clamping plate 208, and then the above steps are repeated to move the arc-shaped clamping plate 208 to the initial position of the positioning sleeve 207, and then the long circular workpiece is vertically placed between the two arc-shaped clamping plates 208, and then the electric telescopic rod 5 is started, and finally the arc-shaped clamping plate 208 clamps and fixes the side surface of the long circular workpiece.

[0038] Through cooperation of the above structure, the device can select the corresponding positioning sleeve 207 and arc-shaped clamping plate 208 to position and clamp the side surface and end surface of the circular workpiece according to the length of the size of the circular workpiece, only one equipment can realize two kinds of positioning and clamping of the circular workpiece, and the equipment investment cost of the factory is saved.

[0039] When it is necessary to limit the position of the adjusted vertical strip plate 204, when the vertical strip plate 204 drives the arc-shaped clamping plate 208 or the positioning sleeve 207 to complete the positioning and clamping of the circular workpiece, the rotating wheel 33 can be rotated, the rotating wheel 33 drives the threaded rod 32 to rotate, the threaded rod 32 drives the T-shaped plate 35 to move on the surface of the vertical rod 34, the T-shaped plate 35 drives the bolt 36 to move when the T-shaped plate 35 moves on the surface of the vertical rod 34, when the position of the bolt 36 makes the bolt 36 adhere to the surface of the extension plate 37, at this time, the bolt 36 is screwed into the inside of the extension plate 37, so that the position of the vertical strip plate 204 is limited, through cooperation of the above structure, the adjusted position of the vertical strip plate 204 can be further limited, so that the positioning and clamping effect of the arc-shaped clamping plate 208 and the positioning sleeve 207 on the circular workpiece is improved.

[0040] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A workpiece positioning and clamping device for a CNC machine tool, comprising a U-shaped support seat (1), characterized in that: An L-shaped plate (4) is fixedly mounted on the surface of the U-shaped support seat (1), an electric telescopic rod (5) is fixedly mounted on the top inner wall surface of the L-shaped plate (4), a T-shaped seat (6) is fixedly mounted on the output end of the electric telescopic rod (5), two hinged plates (7) are hingedly mounted on the bottom surface of the T-shaped seat (6), a switching device (2) is provided on one side surface of the horizontal end of the U-shaped support seat (1), the switching device (2) comprises a through slot (201), the through slot (201) is opened on one side surface of the horizontal end of the U-shaped support seat (1), a sliding rod (202) is fixedly mounted between the inner walls on both sides of the through slot (201), two movable plates (203) are slidably connected to the surface of the sliding rod (202), one end of the hinged plate (7) away from the T-shaped seat (6) is hinged to the movable plate (203), and a vertical strip plate (204) is fixedly mounted on one side surface of the two movable plates (203).

2. The CNC machine tool workpiece positioning and clamping device according to claim 1, characterized in that: The surfaces of the two vertical strips (204) are both provided with vertical grooves (205), and two sliding strips (206) are slidably connected inside the vertical grooves (205). The surfaces of the two sliding strips (206) away from the vertical grooves (205) are respectively fixed with positioning sleeves (207) and arc-shaped clamping plates (208).

3. The workpiece positioning and clamping device for CNC machine tools according to claim 2, characterized in that: A groove (209) is provided on one side surface of each of the slide plates (206), a slide plate (210) is slidably connected inside the groove (209), and a limiting rod (211) is fixedly installed on the surface of the slide plate (210).

4. The workpiece positioning and clamping device for CNC machine tools according to claim 3, characterized in that: The surfaces of the two vertical strips (204) are uniformly provided with a plurality of limiting holes (212); a rectangular plate (213) is fixedly mounted on one side surface of each sliding strip (206); and a spring (214) is fixedly mounted between the rectangular plate (213) and the slide plate (210).

5. The workpiece positioning and clamping device for CNC machine tools according to any one of claims 1 to 4, characterized in that: A limiting device (3) is provided on one side surface of the two vertical strips (204), and the limiting device (3) includes four U-shaped plates (31). The four U-shaped plates (31) are fixedly installed on one side surface of the two vertical strips (204) in groups of two. A threaded rod (32) is rotatably connected between the inner walls of both ends of the two U-shaped plates (31), and a rotating wheel (33) is fixedly installed on one end of the threaded rod (32).

6. The workpiece positioning and clamping device for a CNC machine tool according to claim 5, characterized in that: A vertical rod (34) is fixedly installed between the inner walls of both ends of the other two U-shaped plates (31), and a T-shaped plate (35) is threadedly connected to the surface of the threaded rod (32).

7. The workpiece positioning and clamping device for a CNC machine tool according to claim 6, characterized in that: The surface of the T-shaped plate (35) is threadedly connected with a bolt (36), and an extension plate (37) is fixedly mounted on one side surface of the U-shaped support seat (1).

Images