Six-point positioning auxiliary clamp for special-shaped spherical surface

Abstract

The utility model provides a six-point positioning auxiliary clamp for a special-shaped spherical surface, and belongs to the technical field of clamps. The six-point positioning auxiliary clamp for the special-shaped spherical surface comprises a special-shaped workpiece and a base. A first clamping and positioning piece and a second clamping and positioning piece are arranged at the two ends of the base correspondingly and clamp the two ends of the special-shaped workpiece. The two ends of the two sides of the base are further provided with a first tightly-abutting positioning piece, a second tightly-abutting positioning piece, a third tightly-abutting positioning piece and a fourth tightly-abutting positioning piece respectively. Through cooperation of the first clamping positioning piece, the second clamping positioning piece, the first tightly-abutting positioning piece, the second tightly-abutting positioning piece, the third tightly-abutting positioning piece and the fourth tightly-abutting positioning piece, six-point and point-to-point accurate positioning is achieved, the clamping stability of the special-shaped workpiece can be effectively guaranteed, displacement is avoided, and then the machining precision of the special-shaped workpiece is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of fixtures, and in particular to a special-shaped spherical six-point positioning auxiliary fixture. Background Art

[0002] The device used to fix the processing object in the mechanical manufacturing process so that it occupies the correct position to accept construction or inspection is also called a fixture. In a broad sense, any device used to quickly, conveniently and safely install the clamped workpiece in any process of the process can be called a fixture. For example, welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc. Among them, machine tool fixtures are the most common and are often referred to as fixtures. When processing the clamped workpiece on the machine tool, in order to make the surface of the clamped workpiece meet the technical requirements such as size, geometry and relative position accuracy with other surfaces specified in the drawing, the clamped workpiece must be positioned and clamped before processing or inspection.

[0003] It is relatively easy to clamp regular workpieces during processing, but it is difficult to position special-shaped workpieces (such as high-temperature alloy turbine blades), and more blade areas are occupied after clamping, so the stability of special-shaped workpieces is poor, which in turn affects the processing accuracy of special-shaped workpieces. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides a special-shaped spherical six-point positioning auxiliary clamp, which aims to improve the problem that positioning is difficult, and after clamping, a larger blade area is occupied, the stability effect of the special-shaped workpiece is poor, which in turn affects the accuracy of special-shaped workpiece processing.

[0005] An embodiment of the present application provides a special-shaped spherical six-point positioning auxiliary fixture, including a special-shaped workpiece and a base.

[0006] The two ends of the base are respectively provided with a first clamping positioning member and a second clamping positioning member, and the first clamping positioning member and the second clamping positioning member clamp the two ends of the special-shaped workpiece. The two ends of the two sides of the base are also respectively provided with a first tight abutting positioning member, a second tight abutting positioning member, a third tight abutting positioning member and a fourth tight abutting positioning member, and the first tight abutting positioning member, the second tight abutting positioning member, the third tight abutting positioning member and the fourth tight abutting positioning member tightly abut the two sides of the special-shaped workpiece.

[0007] In a specific embodiment, the first clamping positioning member includes a first bearing seat and a first ball head positioning portion, the first bearing seat is installed on the upper surface of one end of the base, one end of the special-shaped workpiece is located on the first bearing seat, and the first ball head positioning portion is tightly against the outer side wall of the special-shaped workpiece

[0008] In a specific embodiment, the second clamping positioning member includes a second bearing seat and a second ball head positioning portion, the second bearing seat is installed at the other end of the base, the other end of the special-shaped workpiece is located on the second bearing seat, and the second ball head positioning portion is tightly against the outer wall of the special-shaped workpiece.

[0009] In a specific embodiment, the first abutment positioning member and the second abutment positioning member both include a first bracket and a first ball head positioning pin, the two first brackets are mounted on the base, and the two first ball head positioning pins are respectively screwed through the two first brackets and abut against the side of the special-shaped workpiece.

[0010] In a specific embodiment, the third tight-abutting positioning member and the fourth tight-abutting positioning member both include a second bracket and a second ball head positioning pin, two second brackets are installed on the base, and two second ball head positioning pins are respectively screwed through the two second brackets and tightly abut against the side of the special-shaped workpiece.

[0011] In a specific embodiment, the second ball head positioning part includes a third bracket, which is installed on the base. The top end of the third bracket is rotatably connected to a pressure rod, and a third ball head positioning pin is threaded through the pressure rod, and the bottom end of the third ball head positioning pin is tightly against the upper surface of the base.

[0012] In a specific embodiment, a positioning seat is installed on the second supporting seat.

[0013] In a specific embodiment, a top positioning member is installed on the base, and a positioning end of the top positioning member contacts the top of the special-shaped workpiece.

[0014] Beneficial effect: Through the cooperation of the first clamping positioning member and the second clamping positioning member, the first tight abutting positioning member, the second tight abutting positioning member, the third tight abutting positioning member and the fourth tight abutting positioning member, 6-point, point-to-point precise positioning is achieved, which can effectively ensure the stability of the clamping of the special-shaped workpiece, and will not cause displacement, thereby ensuring the processing accuracy of the special-shaped workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the special-shaped spherical six-point positioning auxiliary fixture provided in the embodiment of the present application when clamping a workpiece;

[0017] Figure 2 A schematic diagram of the structure of the six-point positioning auxiliary fixture for a special-shaped spherical surface provided in an embodiment of the present application from a first perspective;

[0018] Figure 3 A schematic diagram of the structure of the six-point positioning auxiliary fixture for a special-shaped spherical surface provided in an embodiment of the present application from a second viewing angle;

[0019] Figure 4 This is a schematic diagram of the structure of the second ball head positioning part provided in an embodiment of the present application.

[0020] In the figure: 1-special-shaped workpiece; 2-base; 3-first clamping positioning member; 31-first supporting seat; 32-first ball head positioning part; 4-second clamping positioning member; 41-second supporting seat; 411-positioning seat; 42-second ball head positioning part; 421-third bracket; 422-pressure rod; 423-third ball head positioning pin; 5-first tight-abutting positioning member; 51-first bracket; 52-first ball head positioning pin; 6-second tight-abutting positioning member; 7-third tight-abutting positioning member; 71-second bracket; 72-second ball head positioning pin; 8-fourth tight-abutting positioning member; 9-top positioning member; 10-auxiliary support bolt; 11-lifting ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0022] See also Figure 1-Figure 4 The present application provides a special-shaped spherical six-point positioning auxiliary fixture, including a special-shaped workpiece 1 and a base 2.

[0023] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The two ends of the base 2 are respectively provided with a first clamping positioning member 3 and a second clamping positioning member 4. Specifically, four lifting rings 11 are installed at the four corners of the base 2 to realize the lifting of the base 2. An auxiliary support bolt 10 is installed on the side of the base 2 close to the first clamping positioning member 3, which can adjust the height of the entire special-shaped workpiece 1, so that the positioning groove of the special-shaped workpiece 1 and each ball head positioning pin are accurately positioned. The first clamping positioning member 3 and the second clamping positioning member 4 clamp the two ends of the special-shaped workpiece 1. The two ends of both sides of the base 2 are also respectively provided with a first tight abutment positioning member 5, a second tight abutment positioning member 6, a third tight abutment positioning member 7 and a fourth tight abutment positioning member 8. The first tight abutment positioning member 5, the second tight abutment positioning member 6, the third tight abutment positioning member 7 and the fourth tight abutment positioning member 8 are tightly against the two sides of the special-shaped workpiece 1. Among them, the special-shaped workpiece 1 is first placed on the first clamping positioning member 3 and the second clamping positioning member 4 for clamping, and then the first tight abutting positioning member 5, the second tight abutting positioning member 6, the third tight abutting positioning member 7 and the fourth tight abutting positioning member 8 are rotated in sequence to abut the side of the special-shaped workpiece 1 to achieve clamping of the special-shaped workpiece 1. Through the cooperation of the first clamping positioning member 3 and the second clamping positioning member 4, the first tight abutting positioning member 5, the second tight abutting positioning member 6, the third tight abutting positioning member 7 and the fourth tight abutting positioning member 8, 6 points, point-to-point precise positioning is achieved, which can effectively ensure the stability of the clamping of the special-shaped workpiece 1 without displacement, thereby ensuring the processing accuracy of the special-shaped workpiece 1.

[0024] In this embodiment, the first clamping positioning member 3 includes a first bearing seat 31 and a first ball head positioning portion 32, the first bearing seat 31 is mounted on the upper surface of one end of the base 2, one end of the special-shaped workpiece 1 is located on the first bearing seat 31, and the first ball head positioning portion 32 is tightly against the outer wall of the special-shaped workpiece 1. The second clamping positioning member 4 includes a second bearing seat 41 and a second ball head positioning portion 42, the second bearing seat 41 is mounted on the other end of the base 2, the other end of the special-shaped workpiece 1 is located on the second bearing seat 41, and the second ball head positioning portion 42 is tightly against the outer wall of the special-shaped workpiece 1. A positioning seat 411 is mounted on the second bearing seat 41. The second ball head positioning portion 42 includes a third bracket 421, the third bracket 421 is mounted on the base 2, the top end of the third bracket 421 is rotatably connected to a pressure rod 422, a third ball head positioning pin 423 is threadedly connected to the pressure rod 422, and the bottom end of the third ball head positioning pin 423 is tightly against the upper surface of the base 2. When clamping the special-shaped workpiece 1, first rotate the third ball head positioning pin 423 to move upward, then rotate the pressure rod 422 to move outward, and then place the special-shaped workpiece 1 on the base 2 so that the two ends of the special-shaped workpiece 1 are located on the first supporting seat 31 and the second supporting seat 41, rotate the first ball head positioning part 32 to make it close to the side of the special-shaped workpiece 1, and then rotate the pressure rod 422 again so that the pressure rod 422 contacts the upper part of the two sections of the special-shaped workpiece 1, and then rotate the third ball head positioning pin 423 so that the third ball head positioning pin 423 contacts the upper surface of the base 2, so that the pressure rod 422 is close to the special-shaped workpiece 1. At this time, two-point positioning is achieved.

[0025] In this embodiment, the first tight-butting positioning member 5 and the second tight-butting positioning member 6 both include a first bracket 51 and a first ball-head positioning pin 52. The two first brackets 51 are mounted on the base 2. The two first ball-head positioning pins 52 are respectively screwed through the two first brackets 51 and tightly abut against the side of the special-shaped workpiece 1. The third tight-butting positioning member 7 and the fourth tight-butting positioning member 8 both include a second bracket 71 and a second ball-head positioning pin 72. The two second brackets 71 are mounted on the base 2. The two second ball-head positioning pins 72 are respectively screwed through the two second brackets 71 and tightly abut against the side of the special-shaped workpiece 1. Then, the first ball-head positioning pin 52 and the second ball-head positioning pin 72 are rotated in sequence to position the side of the special-shaped workpiece 1, thereby achieving six-point positioning.

[0026] In the specific setting, a top positioning member 9 is installed on the base 2, and the positioning end of the top positioning member 9 contacts the top of the special-shaped workpiece 1. The base 2 is rotatably provided with screws on both sides of the special-shaped workpiece 1, and connecting rods are screwed on the two screws. The connecting rods can move up and down to press the special-shaped workpiece 1.

[0027] The working principle of the special-shaped spherical six-point positioning auxiliary fixture is as follows: first, the special-shaped workpiece 1 is placed on the first clamping positioning member 3 and the second clamping positioning member 4 for clamping, and then the first tight abutting positioning member 5, the second tight abutting positioning member 6, the third tight abutting positioning member 7 and the fourth tight abutting positioning member 8 are rotated in sequence to abut the side of the special-shaped workpiece 1 to achieve clamping of the special-shaped workpiece 1. Through the cooperation of the first clamping positioning member 3 and the second clamping positioning member 4, the first tight abutting positioning member 5, the second tight abutting positioning member 6, the third tight abutting positioning member 7 and the fourth tight abutting positioning member 8, 6 points, point-to-point precise positioning is achieved, which can effectively ensure the stability of the clamping of the special-shaped workpiece 1, and no displacement will occur, thereby ensuring the processing accuracy of the special-shaped workpiece 1.

[0028] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A special-shaped spherical six-point positioning auxiliary fixture, characterized in that: include A special-shaped workpiece (1) and a base (2), wherein the two ends of the base (2) are respectively provided with a first clamping positioning member (3) and a second clamping positioning member (4), wherein the first clamping positioning member (3) and the second clamping positioning member (4) clamp the two ends of the special-shaped workpiece (1), and the two ends of the two sides of the base (2) are also respectively provided with a first tight abutting positioning member (5), a second tight abutting positioning member (6), a third tight abutting positioning member (7) and a fourth tight abutting positioning member (8), wherein the first tight abutting positioning member (5), the second tight abutting positioning member (6), the third tight abutting positioning member (7) and the fourth tight abutting positioning member (8) are tightly abutted against the two sides of the special-shaped workpiece (1).

2. The six-point positioning auxiliary fixture for a special-shaped spherical surface according to claim 1, characterized in that: The first clamping positioning member (3) comprises a first supporting seat (31) and a first ball head positioning portion (32); the first supporting seat (31) is mounted on an upper surface of one end of the base (2); one end of the special-shaped workpiece (1) is located on the first supporting seat (31), and the first ball head positioning portion (32) is tightly against the outer wall of the special-shaped workpiece (1).

3. The six-point positioning auxiliary fixture for a special-shaped spherical surface according to claim 1, characterized in that: The second clamping positioning member (4) comprises a second supporting seat (41) and a second ball head positioning portion (42); the second supporting seat (41) is mounted on the other end of the base (2); the other end of the special-shaped workpiece (1) is located on the second supporting seat (41); and the second ball head positioning portion (42) is tightly against the outer side wall of the special-shaped workpiece (1).

4. The six-point positioning auxiliary fixture for a special-shaped spherical surface according to claim 1, characterized in that: The first tight-abutting positioning member (5) and the second tight-abutting positioning member (6) both comprise a first bracket (51) and a first ball-end positioning pin (52); the two first brackets (51) are mounted on the base (2); the two first ball-end positioning pins (52) are respectively screwed through the two first brackets (51) and tightly abut against the side surface of the special-shaped workpiece (1).

5. The six-point positioning auxiliary fixture for a special-shaped spherical surface according to claim 1, characterized in that: The third tight-abutting positioning member (7) and the fourth tight-abutting positioning member (8) both comprise a second bracket (71) and a second ball-end positioning pin (72); the two second brackets (71) are mounted on the base (2); the two second ball-end positioning pins (72) are respectively screwed through the two second brackets (71) and tightly abut against the side surface of the special-shaped workpiece (1).

6. The six-point positioning auxiliary fixture for a special-shaped spherical surface according to claim 3, characterized in that: The second ball head positioning part (42) comprises a third bracket (421), the third bracket (421) is mounted on the base (2), the top end of the third bracket (421) is rotatably connected to a pressure rod (422), a third ball head positioning pin (423) is threadedly connected to the pressure rod (422), and the bottom end of the third ball head positioning pin (423) is tightly against the upper surface of the base (2).

7. The six-point positioning auxiliary fixture for a special-shaped spherical surface according to claim 3, characterized in that: A positioning seat (411) is installed on the second supporting seat (41).

8. The six-point positioning auxiliary fixture for a special-shaped spherical surface according to claim 1, characterized in that: A top positioning piece (9) is installed on the base (2), and a positioning end of the top positioning piece (9) contacts the top of the special-shaped workpiece (1).

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