A quick positioning and clamping tool for grinding end face of a part

Abstract

A kind of quick positioning and clamping tool of grinding part end face, including base body, movable baffle, screw, positioning pin, grinding part and rotating nut, wherein, the front end and rear end of the base body are provided with movable baffle respectively, and the space for clamping grinding part is formed between the two movable baffles and base body, while screw is arranged on the movable baffle located at the front end of base body;Precise hole matched with positioning pin is made in the base body, one end of the positioning pin is light pole, the other end of the positioning pin is made with external thread matched with the internal thread of rotating nut, and the grinding part is embedded in the light pole of positioning pin through center hole to realize positioning.The utility model clamps conveniently, grinding the plane of both ends of such part has pertinence, and the batch processing efficiency of part can be greatly improved using the tool, and the value is remarkable.

Description

Technical Field

[0001] This utility model relates to the field of aerospace mechanical parts processing technology, and in particular to a quick positioning and clamping fixture for grinding the end face of parts. Background Technology

[0002] Grinding is one of the most important machining processes in the field of mechanical processing. It plays an extremely important role in aerospace machining production, and it plays an irreplaceable role in ensuring precision and ultra-precision dimensions and special geometric tolerances. Therefore, it has become a key link in overcoming the difficulties in parts production.

[0003] For some slider-type parts, the center hole has high positional accuracy requirements regarding the two protruding end faces. The design typically specifies a positional accuracy of Φ0.1. Furthermore, the distance between the two end faces of the slider is usually a precision dimension with high tolerance requirements. Traditional milling cannot meet these design requirements, necessitating the consideration of grinding. However, in actual grinding operations, considering the structural characteristics of slider-type parts, positioning and clamping are difficult to achieve. Moreover, during grinding, operators cannot directly measure the end face dimensions of the slider lugs to ensure positional accuracy and cannot monitor the grinding process in a timely manner. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a quick positioning and clamping fixture for the end face of a ground part, so as to solve the problems in the background art mentioned above.

[0005] The technical problem solved by this utility model is achieved by the following technical solution: A quick positioning and clamping fixture for the end face of a ground part includes a base, movable baffles, screws, locating pins, a ground part, and a rotating nut. Movable baffles are respectively provided at the front and rear ends of the base, forming a space between the two movable baffles and the base for clamping the ground part. A screw is provided on the movable baffle at the front end of the base. The base has a precision hole that mates with the locating pin. One end of the locating pin is a smooth rod, and the other end has an external thread for mates with the internal thread of the rotating nut. The ground part is embedded in the smooth rod of the locating pin through a central hole for positioning. Tightening the screw against the movable baffles gradually achieves vertical positioning and clamping of the two sides and the bottom plane of the ground part. Finally, tightening the rotating nut axially fixes the ground part to the locating pin, thus clamping the entire ground part.

[0006] In this invention, the base includes a support column and a substrate. The support column is fixed on the substrate, and movable baffles are provided at the front and rear ends of the support column.

[0007] In this invention, the bottom of the movable baffle at the rear end of the support column is fixed on the base plate.

[0008] In this utility model, a support plate is provided on the movable baffle at the front end of the support column, and the screw passes through the support plate and connects to the movable baffle.

[0009] Beneficial effects: This utility model is easy to clamp and can be used to grind the two ends of such parts. Using this tooling can greatly improve the batch production efficiency of parts and has significant value. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0011] Figure 2 This is a schematic diagram of the clamping of a preferred embodiment of the present invention.

[0012] Figure 3 This is a side view of the grinding part in a preferred embodiment of the present invention.

[0013] Figure 4 This is a rear view of the grinding part in a preferred embodiment of the present invention.

[0014] Figure 5 This is a schematic diagram of the grinding part structure in a preferred embodiment of the present invention. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0016] See Figures 1-5 A quick positioning and clamping fixture for the end face of a ground part includes a base 1, movable baffles 2, screws 3, locating pins 4, a ground part 5, and a rotating nut 6. Movable baffles 2 are respectively provided at the front and rear ends of the base 1, forming a space between the two movable baffles 2 and the base 1 for clamping the ground part 5. Screws 3 are provided on the movable baffles 2 located at the front end of the base 1. A precision hole is formed in the base 1 to mate with the locating pins 4. One end of the locating pin 4 is a smooth rod, and the other end has an external thread for mate with the internal thread of the rotating nut 6. The ground part 5 is embedded in the smooth rod of the locating pin 4 through the central hole for positioning. Tightening the screws 3 against the movable baffles 2 gradually achieves vertical positioning and clamping of the two sides and bottom plane of the ground part 5. Finally, tightening the rotating nut 6 achieves axial fixation and clamping of the ground part 5 and the locating pin 4, thereby clamping the entire ground part 5.

[0017] In this embodiment, the base 1 includes a support column and a base plate. The support column is fixed on the base plate, and movable baffles 2 are provided at the front end and rear end of the support column.

[0018] In this embodiment, the bottom of the movable baffle 2 at the rear end of the support column is fixed on the base plate.

[0019] In this embodiment, a support plate 7 is provided on the movable baffle 2 at the front end of the support column, and the screw 3 passes through the support plate 7 and connects to the movable baffle 2.

[0020] In this embodiment, the method of use is as follows: For the grinding of each batch of parts, only the first part needs to be processed and adjusted. That is, during the grinding process, if the dimensional tolerance of the two end faces of the grinding part 5 is allowed, the operator grinds the two end faces of the grinding part 5 by precision grinding, and measures the distances H1 and H2 from the two end faces of the grinding part 5 to the center hole respectively. Then, by taking the middle value of the difference (H1-H2) / 2, the grinding machine height Z value is calculated and adjusted to ensure the grinding amount of the two end faces of the part, thereby ensuring the positional accuracy requirements. Since the condition of each batch of parts is consistent before grinding, the operator only needs to use this fixture for positioning and clamping during the processing of each batch of parts. The position of the center hole of the grinding part 5 is controlled by the pre-adjusted grinding machine parameters. After the grinding of one end face of the grinding part 5 is completed, the other end face can be immediately turned over for grinding. Practice has proven that by using this fixture, the position tolerance of each batch is controlled within Φ0.02, which fully meets the design position tolerance requirement of Φ0.1.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A quick positioning and clamping fixture for the end face of a ground part, comprising a base, a movable baffle, screws, a locating pin, a ground part, and a rotating nut, characterized in that, The front and rear ends of the base are respectively provided with movable baffles, and the space between the two movable baffles and the base is formed for clamping the grinding parts. At the same time, screws are provided on the movable baffles located at the front end of the base. The base has a precision hole that mates with the positioning pin. One end of the positioning pin is a smooth rod, and the other end of the positioning pin has an external thread for mates with the internal thread of the rotating nut. The grinding parts are embedded in the smooth rod of the positioning pin through the center hole.

2. The quick positioning and clamping fixture for the end face of a ground part according to claim 1, characterized in that, The substrate includes a support column and a base plate. The support column is fixed on the base plate, and movable baffles are provided at the front and rear ends of the support column.

3. The quick positioning and clamping fixture for the end face of a ground part according to claim 2, characterized in that, The bottom of the movable baffle at the rear end of the support column is fixed to the base plate.

4. The quick positioning and clamping fixture for the end face of a ground part according to claim 2, characterized in that, A support plate is provided on the movable baffle at the front end of the support column, and the screw passes through the support plate and connects to the movable baffle.

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