Expansion pin mechanism for positioning columnar part

Abstract

An expansion pin mechanism for positioning a columnar part is characterized by comprising a support, an expansion pin body is arranged on the support, a screwing taper pin is arranged in the expansion pin body, an expansion block is arranged in the expansion pin body, a check block is arranged on the expansion pin body, and a screwing handle is arranged on the screwing taper pin; the expansion pin body is sleeved with a cylindrical workpiece, the screwing taper pin is rotated, the screwing taper pin moves forwards on the expansion pin body through threads in the middle, the upper conical face of the screwing taper pin moves forwards and abuts against the three expansion blocks to move outwards at the same time, the workpiece to be machined is located in an abutting mode, and the front end of the screwing taper pin extends out of the expansion pin body. When the expansion pin is not used, the check block partially extends into the opening in the rear end of the expansion pin body, the middle of the expansion pin is blocked, the expansion pin is prevented from falling out of the expansion pin body, columnar forming parts can be accurately positioned, and the expansion pin is simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile inspection tool measurement, in particular to a pin-rising mechanism for positioning columnar parts. Background Art

[0002] At present, the number of automobiles in my country is constantly increasing. Efficiency in all aspects of automobile manufacturing is extremely important. In the processing of automobile parts, it is generally necessary to position the automobile parts. The traditional positioning method generally adopts integrated positioning pins, round pins, diamond pins, etc. for positioning. In the existing technology, it is not convenient or accurate to position the product inaccurately due to the large molding error of columnar molded parts, and some technical methods increase the cost due to the complex structure or cause inaccurate measurement due to the cumbersome structure. In order to solve the above problems, a pin-raising mechanism for positioning columnar parts is proposed. Utility Model Content

[0003] In view of the above existing technical problems, the utility model provides a pin-raising mechanism for positioning columnar parts, which is characterized by comprising a support, a pin-raising body, a tightening cone pin, a raising block, a tightening handle, a stopper, a pin-raising body is arranged on the support, a tightening cone pin is arranged inside the pin-raising body, a raising block is arranged inside the pin-raising body, a stopper is arranged on the pin-raising body, and a tightening handle is arranged on the tightening cone pin;

[0004] Furthermore, the support has a circular opening, the pin-raising body is fixedly arranged in the opening of the support, the pin-raising body has a circular opening, the pin-raising body is divided into two parts, the front half of the pin-raising body has a thread, and the front end has a through opening, the rear half of the pin-raising body has a thread, and a stopper is fixedly arranged at the end of the rear half of the pin-raising body;

[0005] Furthermore, the two parts of the rising pin body are fixedly connected, and there are three square openings at the connection of the two parts. A rising block is arranged in each opening through a spring steel wire, and the three rising blocks are evenly distributed at the connection of the two parts of the rising pin body at an interval of 120 degrees;

[0006] Further, the surface of the front position of the middle part of the tightening cone pin is a conical surface, the front end of the tightening cone pin is a cylinder, the front end of the tightening cone pin is threaded, the tightening cone pin is connected to the tightening handle through the thread of the front end, the middle part of the tightening cone pin is a threaded cylinder, the tightening cone pin is connected to the pin body through the thread in the middle, the rear end of the tightening cone pin is cylindrical, and the diameter of the rear end of the tightening cone pin is smaller than the diameter of the middle part of the tightening cone pin;

[0007] Furthermore, the stopper is located at the connection between the middle and rear ends of the tightening cone pin.

[0008] Beneficial effects of the utility model:

[0009] The utility model sets the cylindrical workpiece on the pin raising body, rotates and tightens the cone pin, and the tightening cone pin moves forward on the pin raising body through the thread in the middle, and the cone surface on the tightening cone pin moves forward, presses against the three rising blocks and moves outward at the same time, so that the workpiece to be processed is pressed and positioned, and the front end of the tightening cone pin extends out of the pin raising body and is connected with the tightening handle through the thread at the front end to fix the tightening cone pin; when not in use, the block portion extends into the opening at the rear end of the pin raising body, blocks the middle part of the tightening cone pin, and prevents the tightening cone pin from falling out of the pin raising body, so that the columnar formed parts can be accurately positioned, and the utility model has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall structure of a pin-rising mechanism for positioning columnar parts according to the utility model;

[0011] Figure 2 This is a cross-sectional view of a pin-rising mechanism for positioning a columnar part according to the utility model;

[0012] As shown in the figure: 1 support, 2 rising pin body, 3 tightening cone pin, 4 rising block, 5 tightening handle, 6 stopper. DETAILED DESCRIPTION

[0013] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0015] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0016] Example 1

[0017] The utility model provides a pin-raising mechanism for positioning columnar parts, which is characterized by comprising a support 1, a pin-raising body 2, a tightening cone pin 3, a raising block 4, a tightening handle 5, and a stopper 6. The pin-raising body 2 is arranged on the support 1, the tightening cone pin 3 is arranged in the pin-raising body 2, the raising block 4 is arranged in the pin-raising body 2, the stopper 6 is arranged on the pin-raising body 2, and the tightening cone pin 3 is arranged on the tightening handle 5;

[0018] Furthermore, there is a circular opening on the support 1, and the pin-raising body 2 is fixedly arranged in the opening of the support 1. There is a circular opening in the pin-raising body 2. The pin-raising body 2 is divided into two parts. The front half of the pin-raising body 2 has a thread inside, and the front end has a through opening. The rear half of the pin-raising body 2 has a thread inside, and a stopper 6 is fixedly arranged at the end of the rear half of the pin-raising body 2.

[0019] Furthermore, the two parts of the rising and pinning body 2 are fixedly connected, and there are three square openings at the connection of the two parts. A rising block 4 is arranged in each opening through a spring steel wire, and the three rising blocks 4 are evenly distributed at the connection of the two parts of the rising and pinning body 2 at intervals of 120 degrees;

[0020] Further, the surface of the front position of the middle part of the tightening cone pin 3 is a conical surface, the front end of the tightening cone pin 3 is a cylinder, the front end of the tightening cone pin 3 is threaded, the tightening cone pin 3 is connected to the tightening handle 5 through the thread of the front end, the middle part of the tightening cone pin 3 is a threaded cylinder, the tightening cone pin is connected to the pin body 2 through the thread in the middle, the rear end of the tightening cone pin 3 is cylindrical, and the diameter of the rear end of the tightening cone pin 3 is smaller than the diameter of the middle part of the tightening cone pin 3;

[0021] Furthermore, the stopper 6 is located at the connection between the middle and rear ends of the tightening cone pin 3 .

[0022] Example 2

[0023] When in use, the cylindrical workpiece is put on the pin raising body 2, and the tightening cone pin 3 is rotated. The tightening cone pin 3 moves forward on the pin raising body 2 through the middle thread, and the cone surface on the tightening cone pin 3 moves forward, pressing the three expansion blocks 4 and moving outward at the same time to press and position the workpiece to be processed. The front end of the tightening cone pin 3 extends out of the pin raising body 2 and is connected to the tightening handle 5 through the front end thread to fix the tightening cone pin 3. When not in use, the three expansion blocks 4 return to the square openings of the two parts of the pin raising body 2 under the action of the spring steel wire to prevent the expansion blocks 4 from falling off. The stop block 6 partially extends into the opening at the rear end of the pin raising body 2 to block the middle part of the tightening cone pin 3 to prevent the tightening cone pin 3 from falling out of the pin raising body 2.

[0024] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The various components mentioned in the utility model are common technologies in the existing field. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pin-raising mechanism for positioning columnar parts, characterized in that: It includes a support, a pin raising body, a tightening cone pin, a raising block, a tightening handle and a stopper. The pin raising body is arranged on the support, the tightening cone pin is arranged inside the pin raising body, the raising block is arranged inside the pin raising body, the stopper is arranged on the pin raising body, and the tightening cone pin is arranged on the tightening handle.

2. According to claim 1, a pin-raising mechanism for positioning a columnar part is characterized in that: There is a circular opening on the support, and the pin-raising body is fixedly arranged in the opening of the support. There is a circular opening in the pin-raising body. The pin-raising body is divided into two parts. The front half of the pin-raising body has a thread and a through opening at the front end. The rear half of the pin-raising body has a thread, and a stopper is fixedly arranged at the end of the rear half of the pin-raising body.

3. According to claim 2, a pin-raising mechanism for positioning a columnar part is characterized in that: The two parts of the rising pin body are fixedly connected, and there are three square openings at the connection of the two parts. A rising block is arranged in each opening through a spring steel wire. The three rising blocks are evenly distributed at the connection of the two parts of the rising pin body at an interval of 120 degrees.

4. A pin-raising mechanism for positioning a columnar part according to claim 3, characterized in that: The surface at the front of the middle part of the tightening cone pin is conical, the front end of the tightening cone pin is a cylinder, the front end of the tightening cone pin is threaded, the tightening cone pin is connected to the tightening handle through the thread at the front end, the middle part of the tightening cone pin is a threaded cylinder, the tightening cone pin is connected to the rising pin body through the thread in the middle, the rear end of the tightening cone pin is cylindrical, and the diameter of the rear end of the tightening cone pin is smaller than the diameter of the middle part of the tightening cone pin.

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