Positioning tool for machine tool

Abstract

A positioning tool for a machine tool comprises a positioning bottom plate, end plates are installed at the two ends of the positioning bottom plate, a pair of push rods are arranged on the end plates in a penetrating mode, clamping end plates are installed at the inner side ends of the push rods, clamping lead screws are rotationally arranged on the end plates, rotating caps are arranged at the outer side ends of the clamping lead screws, outer push plates are arranged on the clamping lead screws, and the outer push plates are installed at the outer side ends of the push rods. And through the arranged clamping lead screw, when the clamping lead screw rotates, the clamping end plates can be driven to move inwards, and the two ends of the plate are positioned through the clamping end plates.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a positioning tool for a machine tool. Background Art

[0002] Compared with casting, machining of complex structural components by machine tools or machining centers can improve the processing efficiency and accuracy of components. When components are machined, the accuracy and reliability of clamping and positioning become the key to machining quality control. The commonly used method is to press down to position. Although this method can clamp plates of different sizes according to needs and actual needs, this clamping method has poor reliability and is cumbersome during the clamping process. At the same time, positioning is only performed by pressing down, so its positioning effect is poor. The problem of plate movement is prone to occur during processing, and the movement of the plate directly affects the processing accuracy of the component. Utility Model Content

[0003] The utility model provides a positioning tool for a machine tool, so as to solve the above-mentioned deficiencies in the prior art, solve the problem of poor reliability of the existing clamping and positioning, and has strong practicability.

[0004] In order to achieve the purpose of this utility model, the following technologies are proposed:

[0005] A positioning tool for a machine tool comprises a positioning base plate, end plates are installed at both ends of the positioning base plate, a pair of push rods are passed through the end plates, a clamping end plate is installed at the inner end of the push rod, a clamping screw is rotatably provided on the end plate, a rotating cap is provided at the outer end of the clamping screw, an outer push plate is provided on the clamping screw, and the outer push plate is installed at the outer end of the push rod. Through the clamping screw, when it rotates, it can drive the clamping end plate to move inward, and the two ends of the plate are positioned by the clamping end plate.

[0006] The two ends of the push plate are provided with connecting side rods, the other end of the connecting side rod is provided with a concave part, the other end of the concave part is provided with a push rod, and the two sides of the positioning base plate are installed with extended support plates, the extended support plates are provided with a rotating shaft, the rotating shaft is eccentrically provided with a side plate, the outer periphery of the side plate is provided with an extended protrusion, the extended protrusion is provided with a push long hole, and the push rod is inserted into the push long hole. When the connecting side rod is moved inwardly driven by the clamping screw, the side plate can be rotated, so that the eccentrically arranged side plate clamps and positions the two sides of the plate. Of course, when positioning, it is generally necessary to make the center of the side plate, the center of the rotating shaft and the contact point between the side plate and the plate be located in a straight line. In this way, the accuracy of positioning and the reliability after positioning can be ensured.

[0007] Furthermore, a limiting groove is provided on the inner wall of the clamping end plate, and the upper wall of the limiting groove serves to limit the upper wall of the plate.

[0008] Furthermore, the upper wall of the limiting groove is arranged to be inclined, and the upper wall of the limiting groove can act on the edge of the plate, thereby improving the positioning effect of the plate.

[0009] Furthermore, a jacking protrusion is provided on the upper wall of the side plate, an inner top cone is concentrically provided on the upper wall of the side plate, a V-shaped surface is formed on one side of the inner top cone, a roller is tangent to the outer periphery of the inner top cone, an inner top seat is provided at the upper end of the roller, the roller is rotatably arranged on the inner side end of the inner top seat, a pair of telescopic rods are provided on the inner top seat, a concave seat is provided at the outer end of the telescopic rod, the concave seat is installed on the outer end of the extended support plate, a spring is provided at the outer end of the telescopic rod, the spring is located on the outer side of the concave seat, and the outer end of the telescopic rod is provided with a spring A limiting nut, a movable vertical rod is passed through the inner side of the concave seat, the lower end of the movable vertical rod acts on the upper wall of the side plate, an adjusting block is screwed on the upper end of the movable vertical rod, lifting side rods are provided on both sides of the adjusting block, an upper extension convex seat is provided on the inner top seat, a rotating side plate is rotatably provided on the upper end of the upper extension convex seat, a rotating arm is provided at the outer end of the rotating side plate, a downward pressure top plate is provided at the inner end of the rotating arm, a pair of upper top outer plates are provided at the outer end of the rotating arm, a waist-shaped hole is opened on the upper top outer plate, and the lifting side rod passes through the waist-shaped hole. Through the provided spring, the roller can always be tangent to the outer periphery of the inner top cone, and when the roller rolls on the V-shaped surface, it will move outward, so that the lower pressure plate is located on the outside, which is convenient for placing the processed plate. When clamping, the lower pressure plate can be located above the plate, and the provided lifting protrusion, when its upper end acts on the lower end of the movable vertical rod, can lift the movable vertical rod, thereby causing the lower pressure plate to rotate downward, thereby achieving the purpose of limiting the upper side of the plate by the lower pressure plate.

[0010] Furthermore, the lifting block has an inverted V-shaped structure to ensure the stability of the side plate when it rotates.

[0011] The advantages of the above technical solution are:

[0012] The utility model facilitates the positioning operation of the two sides, two ends and the upper and lower end surfaces of the plate, thereby helping to improve the accuracy during machining. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0014] Figure 1 A three-dimensional structural diagram of one embodiment is shown.

[0015] Figure 2 An enlarged view of A is shown.

[0016] Figure 3 An enlarged view of B is shown. DETAILED DESCRIPTION

[0017] like Figure 1~Figure 3 As shown, a positioning fixture for a machine tool includes a positioning base plate 1, end plates 2 are installed at both ends of the positioning base plate 1, a pair of push rods 23 are passed through the end plates 2, a clamping end plate 24 is installed at the inner end of the push rod 23, a limiting groove is provided on the inner wall of the clamping end plate 24, and the upper wall of the limiting groove is inclined. A clamping screw 20 is rotatably provided on the end plate 2, a rotating cap 21 is provided at the outer end of the clamping screw 20, an outer push plate 22 is provided on the clamping screw 20, and the outer push plate 22 is installed at the outer end of the push rod 23. Connecting side rods 6 are provided at both ends of the outer push plate 22, a concave piece 60 is provided at the other end of the connecting side rod 6, and a top push rod 61 is provided at the other end of the concave piece 60.

[0018] An extended support plate 3 is installed on both sides of the positioning base plate 1. A rotating shaft 30 is provided on the extended support plate 3. A side plate 31 is eccentrically provided on the rotating shaft 30. An extended protrusion is provided on the outer periphery of the side plate 31. A long push hole is opened on the extended protrusion. A push rod 61 passes through the long push hole. The upper wall of the side plate 31 is provided with a jacking protrusion 32, and the jacking protrusion 32 is in an inverted V-shaped structure. The upper wall of the side plate 31 is concentrically provided with an inner top cone 33, and one side of the inner top cone 33 is formed with a V-shaped surface 35. A roller 36 is tangent to the outer periphery of the inner top cone 33, and an inner top seat 41 is provided at the upper end of the roller 36. The roller 36 is rotatably arranged on the inner side end of the inner top seat 41. A pair of telescopic rods 38 are provided on the inner top seat 41, and a concave seat 37 is provided at the outer end of the telescopic rod 38. The concave seat 37 is installed on the outer end of the extended support plate 3, and a spring 39 is provided at the outer end of the telescopic rod 38. The spring 39 is located on the outer side of the concave seat 37. The outer side of the telescopic rod 38 A limiting nut 40 is provided at the side end, and a movable vertical rod 49 is passed through the inner side of the concave seat 37. The lower end of the movable vertical rod 49 acts on the upper wall of the side plate 31. An adjusting block 48 is screwed on the upper end of the movable vertical rod 49. Lifting side rods 47 are provided on both sides of the adjusting block 48. An upper extending protrusion 42 is provided on the inner top seat 41. A rotating side plate 43 is rotatably provided on the upper end of the upper extending protrusion 42. A rotating arm 44 is provided at the outer end of the rotating side plate 43. A downward pressing top plate 51 is provided at the inner end of the rotating arm 44. A pair of upper top outer plates 45 are provided at the outer end of the rotating arm 44. A waist-shaped hole 46 is opened on the upper top outer plate 45, and the lifting side rod 47 passes through the waist-shaped hole 46.

[0019] During operation of this embodiment, the operator places the plate on the positioning base plate 1 .

[0020] Then the two operators rotate the clamping screw 20 at the same time. When the clamping screw 20 rotates, the push plate 22 will be driven to move inward. At the same time, the push plate 22 will move inward, and the clamping end plate 24 will move inward. Finally, the positioning operation of the two ends of the plate is completed through the clamping end plate 24.

[0021] When the clamping screw 20 rotates, and with the movement of the outer push plate 22, the push rod 61 is driven to move inward, and the movement of the push rod 61 will act on the push long hole, so that the side plate 31 rotates around the rotating shaft 30, and then the outer periphery of the side plate 31 acts on both sides of the plate, and then the positioning of both sides of the plate is completed through the side plate 31.

[0022] The rotation of the side plate 31 can also cause the roller 36 to move inwards through the inner top circular platform 33 thereon, and cause the downward pressing top plate 51 to move inwards.

[0023] When the side plate 31 rotates, it can also act on the lower end of the movable vertical rod 49 through the lifting protrusion 32, thereby causing it to move upward. When the movable vertical rod 49 moves upward, the downward pressing top plate 51 will rotate downward, and the lower end of the downward pressing top plate 51 will act on the upper side of the plate, thereby completing the positioning operation of the plate.

[0024] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A positioning tool for a machine tool, characterized in that: The positioning base plate (1) comprises an end plate (2) installed at both ends of the positioning base plate (1), a pair of push rods (23) are passed through the end plate (2), a clamping end plate (24) is installed at the inner end of the push rod (23), a clamping screw rod (20) is rotatably installed on the end plate (2), a rotating cap (21) is provided at the outer end of the clamping screw rod (20), an outer push plate (22) is provided on the clamping screw rod (20), and the outer push plate (22) is installed at the outer end of the push rod (23); The two ends of the outer push plate (22) are provided with connecting side rods (6), the other end of the connecting side rod (6) is provided with a concave piece (60), and the other end of the concave piece (60) is provided with a push rod (61); Outer extension plates (3) are installed on both sides of the positioning base plate (1), a rotating shaft (30) is provided on the outer extension plates (3), a side plate (31) is eccentrically provided on the rotating shaft (30), an outer periphery of the side plate (31) is provided with an outward extension protrusion, a push-up long hole is opened on the outward extension protrusion, and a push-up rod (61) is inserted into the push-up long hole.

2. The positioning fixture for machine tools according to claim 1, characterized in that: The inner wall of the clamping end plate (24) is provided with a limiting groove.

3. The positioning fixture for machine tools according to claim 2, characterized in that: The upper wall of the limiting groove is arranged in an inclined manner.

4. The positioning fixture for machine tools according to claim 1, characterized in that: The upper wall of the side plate (31) is provided with a jacking protrusion (32), the upper wall of the side plate (31) is concentrically provided with an inner top truncated cone (33), one side of the inner top truncated cone (33) is formed with a V-shaped surface (35), the outer periphery of the inner top truncated cone (33) is tangentially provided with a roller (36), the upper end of the roller (36) is provided with an inner top seat (41), the roller (36) is rotatably arranged on the inner side end of the inner top seat (41), a pair of telescopic rods (38) are provided on the inner top seat (41), the outer ends of the telescopic rods (38) are provided with a concave seat (37), the concave seat (37) is installed on the outer end of the extended support plate (3), the outer end of the telescopic rod (38) is sleeved with a spring (39), the spring (39) is located on the outer side of the concave seat (37), and the outer end of the telescopic rod (38) is provided with a limit screw The nut (40) is provided with a movable vertical rod (49) on the inner side of the concave seat (37), the lower end of the movable vertical rod (49) acts on the upper wall of the side plate (31), the upper end of the movable vertical rod (49) is screwed with an adjustment block (48), and the two sides of the adjustment block (48) are provided with a lifting side rod (47), the inner top seat (41) is provided with an upper extension convex seat (42), the upper end of the upper extension convex seat (42) is rotatably provided with a rotating side plate (43), the outer end of the rotating side plate (43) is provided with a rotating arm (44), the inner end of the rotating arm (44) is provided with a downward pressing top plate (51), the outer end of the rotating arm (44) is provided with a pair of upper top outer plates (45), the upper top outer plates (45) are provided with a waist-shaped hole (46), and the lifting side rod (47) is passed through the waist-shaped hole (46).

5. The positioning fixture for machine tools according to claim 4, characterized in that: The jacking protrusion (32) is in an inverted V-shaped structure.

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