CN203443726U - Torque measuring instrument of bearing surface projection welding bolt - Google Patents

Abstract

The utility model relates to a measuring tool, in particular to a torque measuring tool of a projection welding bolt which is stable, reliable and convenient for replacing the projection welding nut. The tool includes a sleeve body composed of a small shaft section and a large shaft section. The small shaft section is provided with a connection port for connecting with a torque wrench. The end surface of the large shaft section is provided with a through hole through which projection welding bolts can pass. The shaft section is provided with a mounting port connected with the through hole, and a projection welding nut connected with the projection welding bolt is provided in the mounting port, and the projection welding nut is detachably connected with the large shaft section and fixed by a clamping block. The beneficial effects of the utility model are: the sleeve main body is provided with a mounting port for accommodating the projection welding nut, and fixed with a clamping block, when the projection welding nut breaks or the thread wears out, a new projection welding nut can be replaced conveniently and quickly, and the use of Projection welding nuts are used to replace vulnerable threaded parts, which can accurately and reliably judge the welding stability of projection welding bolts on the bearing surface, and reduce enterprise costs.

Description

A Torque Measuring Tool for Projection Welding Bolts

technical field

The utility model relates to a measuring tool, in particular to a torque measuring tool of a projection welding bolt which is stable, reliable and convenient for replacing the projection welding nut.

Background technique

There are a large number of projection welding bolts and studs on the car body-in-white. Whether the torque meets the requirements is very important for subsequent assembly. In order to detect the welding quality of the projection welding bolts on the bearing surface, there are three commonly used detection methods: the first one is to weld the projection welding bolts on the bearing surface on the suitable process test plate, and observe the convexity of the bearing surface by using destructive means such as tool knocking. Whether the welding bolt is loose or not is used to test its welding strength. Since the applied force is not easy to control, this method cannot directly and effectively explain the welding actual value, nor can it be measured and tested during the production process; the second method is to make a special sleeve , process the inner thread at one end of the sleeve, and then measure the torque after tightening with the projection welding bolt on the bearing surface. However, after a long time of use, the thread on the sleeve will be severely worn, affecting the measurement accuracy, and even unusable. This requires a lot of Replacing a new sleeve again increases the production cost; the third is to use one or two projection welding nuts after welding the bearing surface welding bolts, and then measure the torque, because in the actual use process, the bearing surface When the bolt is not welded, the qualified torque can also be measured with the projection welding bolt, so the measured data is not true.

Aiming at the second detection method for making special sleeves, a torque measurement tool for projection welding bolts with bearing surfaces is now provided, such as a Chinese utility model with the announcement number CN201724769U providing a torque measurement tool for projection welding bolts and studs, including A torque wrench and an adapter sleeve, the adapter sleeve is provided with a connecting part and a connecting part; an axial connecting hole is arranged on the end face of the connecting part; An axial connecting hole; the torque wrench is selectively connected to the connecting portion of the adapter sleeve through the connecting hole; threads are provided on the connecting hole. Threads need to be arranged on the adapter sleeve provided by this patent. After a long time of use, there is still the problem of inaccurate measurement. If new sleeves are replaced many times, the production cost will be increased.

Utility model content

The utility model mainly aims at the problems of the existing torque measuring tools that the thread is easily damaged, the measurement is inaccurate and the production cost is high, and provides a projection welding bolt with a simple structure, accurate measurement, easy disassembly and replacement of welding nuts torque measuring tool.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: a torque measurement tool for projection welding bolts on the bearing surface, which includes a sleeve main body composed of a small shaft section and a large shaft section, on the small shaft section There is a connecting port connected with the torque wrench, and the end surface of the large shaft section is provided with a through hole through which the projection welding bolt can pass. Projection welding nuts connected by bolts, the projection welding nuts are detachably connected with the large shaft section and fixed by clamping blocks. The measurement tool is optimized and improved in the second measurement method in the background technology. The small shaft section is connected to a torque wrench through the connection port, and the large shaft section is installed with a projection welding nut through the installation port to measure the torque of the projection welding bolt on the bearing surface. When the thread of the projection welding nut is severely worn or the bolt is broken, it can be replaced with a new projection welding nut, which is simple and convenient, the measurement data is more accurate and reliable, and the cost of the enterprise is reduced. This device is fast, safe and convenient to use. It is a device worth learning from.

As a preference, the installation port is a through hole arranged along the radial direction of the large shaft section, two fixing holes are provided on the outer surface of the large shaft section, and there are two clamping blocks, and the two clamping blocks are respectively It is arranged on both sides of the installation port, and fixed on the large shaft section by fastening bolts connected in the fixing holes. The clamping block plays the role of limiting and fixing, and is convenient for disassembly and assembly. After removing the clamping block, a new projection welding nut can be replaced.

As a preference, two cut surfaces are provided on the outer surface of the large shaft section, and the two cut surfaces are respectively arranged at the two end faces of the installation port. There is a boss in the mouth, and the clamping block is in an "L" shape, the horizontal side of the clamping block leans against the boss, and the vertical side of the clamping block fits the cut surface. The mounting port should be compatible with the projection welding nut, and the nut can be easily removed.

As a preference, an open groove is provided on the end surface of the through hole on the large shaft section, the open groove communicates with the through hole and the installation port, and the groove width of the open groove is larger than the shaft diameter of the projection welding bolt. When the projection welding bolt is broken or the projection welding nut is taken out, it can be taken out through the opening groove by a tool.

Preferably, the connection port is arranged along the axial direction of the small shaft section, the connection port is a square hole and fits with the head of the torque wrench, and the small shaft section is provided with a clamping hole for clamping with the steel ball on the torque wrench , the clamping holes are arranged along the radial direction of the small shaft section. The connection port on the small shaft section is adapted to the head of the torque wrench, and is fixed in the clamping hole by a steel ball.

Preferably, two symmetrical process planes are provided on the outer surface of the small shaft section, and the two process planes are respectively provided at the two end surfaces of the clamping hole. The process plane is processed on the small shaft section to simplify the processing of stuck holes.

Preferably, the axes of the large shaft section and the small shaft section are located on the same vertical line.

Therefore, the beneficial effect of the utility model is: the installation port for accommodating the projection welding nut is provided on the sleeve main body, and fixed by a clamping block, when the projection welding nut breaks or the thread wears out, a new projection welding nut can be replaced conveniently and quickly , Using the projection welding nut to replace the vulnerable threaded parts can accurately and reliably judge the welding stability of the projection welding bolt on the bearing surface, and reduce the cost of the enterprise.

Description of drawings

Accompanying drawing 1 is a kind of overall structural representation of the utility model;

Accompanying drawing 2 is a kind of structural decomposition diagram of the utility model.

As shown in the figure: 1-sleeve body, 2-connection port, 3-through hole, 4-installation port, 5-projection welding nut, 6-clamping block, 7-fixing hole, 8-fastening bolt, 9 - cutting surface, 10 - boss, 11 - opening slot, 12 - card hole, 13 - process plane.

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Example:

As shown in the accompanying drawings 1 and 2 of the specification, a torque measuring tool for projection welding bolts on the bearing surface includes a sleeve main body 1 composed of a small shaft section and a large shaft section. The axes of the large shaft section and the small shaft section are located at the same On a vertical line, the small shaft section is provided with a connection port 2 connected to the torque wrench. The connection port 2 is arranged along the axis of the small shaft section. The connection port 2 is a square hole and is adapted to the head of the torque wrench. The shaft section is provided with a clamping hole 12 that is engaged with the steel ball on the torque wrench. The clamping hole 12 is arranged along the radial direction of the small shaft section. Two symmetrical process planes 13 are provided on the outer surface of the small shaft section. Two process planes 13 are respectively arranged at the two end faces of the clamping hole 12, the end face of the large shaft section is provided with a via hole 3 through which projection welding bolts can pass, and the large shaft section is provided with a mounting port 4 communicating with the via hole 3 The installation port 4 is provided with a projection welding nut 5 connected with the projection welding bolt. The projection welding nut 5 is detachably connected to the large shaft section and fixed by the clamping block 6. The installation port 4 is along the diameter of the large shaft section. There are through holes set in the direction, two fixing holes 7 are provided on the outer surface of the large shaft section, and there are two clamping blocks 6, and the two clamping blocks 6 are respectively arranged on both sides of the installation port 4, and are connected to the The fastening bolts 8 in the fixing holes 7 are fixed on the large shaft section. Two cut surfaces 9 are arranged on the outer surface of the large shaft section. The two cut surfaces 9 are respectively arranged at the two end faces of the installation port 4. The installation port 4 is The "T"-shaped hole adapted to the projection welding nut 5 has a boss 10 inside the installation port 4, and the clamping block 6 is in the shape of an "L". The vertical side of the tight block 6 fits with the cut surface 9, and the end face of the via hole 3 is provided with an open slot 11 on the large shaft section. The open slot 11 communicates with the via hole 3 and the installation port 4. The shaft diameter of the welded bolt.

The main body of the sleeve is connected with the corresponding torque wrench, the projection welding nut is put into the installation port in the main body of the sleeve, and the two sides are fixed with clamping blocks and fastening bolts, so that the assembly of the whole device is completed. When the face bolts need to be measured for torque, screw the device on the face bolts and then test the torque. If the face bolts are broken or the projection welding nuts and internal threads are worn, they can be taken out directly at the installation port to prevent the entire sleeve from being damaged. The barrel body is scrapped. The clamping block plays the role of positioning and clamping the projection welding nut, and the projection welding nut is used to replace the thread. When the thread is worn or the bearing bolt is broken, just loosen the bolt fastened by the projection welding nut and replace the projection welding nut can be reused. The torque measuring tool is easy to use and simple to operate, and uses projection welding nuts to replace vulnerable threaded parts, thereby reducing enterprise costs.

It should be understood that this embodiment is only used to illustrate the utility model but not to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

Claims (7)

1. A torque measuring tool for projection welding bolts on the bearing surface, characterized in that it includes a sleeve main body (1) composed of a small shaft section and a large shaft section, and the small shaft section is provided with a connection port connected with a torque wrench (2), the end surface of the large shaft section is provided with a through hole (3) through which the projection welding bolt can pass, and the large shaft section is provided with a mounting port (4) connected with the via hole (3), and the mounting port (4) A projection welding nut (5) connected with the projection welding bolt is arranged inside, and the projection welding nut (5) is detachably connected with the large shaft section, and is fixed by a clamping block (6). 2. A torque measurement tool for projection welding bolts with bearing surfaces according to claim 1, characterized in that, the installation port (4) is a through hole arranged along the radial direction of the large shaft section, and the large shaft There are two fixing holes (7) on the outer surface of the section, and there are two clamping blocks (6). The fastening bolt (8) in the hole (7) is fixed on the large shaft section. 3. A torque measuring tool for projection welding bolts with bearing surfaces according to claim 2, characterized in that two cutting surfaces (9) are provided on the outer surface of the large shaft section, and the two cutting surfaces (9) They are respectively arranged at the two end faces of the installation port (4). The installation port (4) is a "T"-shaped hole adapted to the projection welding nut (5). There is a boss (10) inside the installation port (4). The clamping block (6) is in an "L" shape, the lateral edge of the clamping block (6) is against the boss (10), and the vertical edge of the clamping block (6) is in contact with the cut surface (9). 4. A torque measurement tool for projection welding bolts with bearing surfaces according to claim 1, 2 or 3, characterized in that an open groove ( 11), the open slot (11) communicates with the through hole (3) and the installation port (4), and the slot width of the open slot (11) is larger than the shaft diameter of the projection welding bolt. 5. A torque measuring tool for projection welding bolts with bearing surfaces according to claim 1, 2 or 3, characterized in that, the connection port (2) is arranged along the axial direction of the small shaft section, and the connection port ( 2) It is a square hole and is adapted to the head of the torque wrench. The small shaft section is provided with a clamping hole (12) that is engaged with the steel ball on the torque wrench. The clamping hole (12) is along the radial direction of the small shaft section layout. 6. A torque measurement tool for projection welding bolts with bearing surfaces according to claim 5, characterized in that two symmetrical process planes (13) are provided on the outer surface of the small shaft section, and the two process planes The planes (13) are respectively arranged at the two end faces of the clamping hole (12). 7 . The torque measuring tool for projection welding bolts with bearing surfaces according to claim 1 , wherein the axes of the large shaft section and the small shaft section are located on the same vertical line. 7 .

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