Comprehensive detection tool for detecting spot facing

Abstract

The utility model discloses a comprehensive testing fixture for detecting a spot facing, which belongs to the technical field of testing fixtures and comprises a go gauge testing fixture, a no-go gauge testing fixture and a base body, detection base circles are fixedly arranged on the upper portion and the lower portion of the rear side face of the base body, positioning pins are arranged on the upper portion and the lower portion of the base body, and the rear ends of the positioning pins protrude out of the rear side faces of the detection base circles. The detection base circle comprises a go gauge base circle and a no-go gauge base circle; the gauge equipped with the go gauge base circle is a go gauge gauge, and the gauge equipped with the no-go gauge base circle is a no-go gauge gauge. According to the utility model, through the arrangement of the detection base circle and the positioning pin, during processing, the detection base circle is of a complete circular structure, so that the detection base circle can be ensured by adopting a common lathe and a grinding machine during processing, and meanwhile, the specification of the whole circle is convenient to detect and has small errors; the purposes of facilitating machining and guaranteeing the quality during base circle machining and detection are achieved.

Description

Technical Field

[0001] The utility model relates to a checking tool, in particular to a comprehensive checking tool for detecting spot facing. Background Art

[0002] Currently, during the machining of engine intake and exhaust manifolds, the flange mounting holes of the manifolds require countersinking (not a full circle). This is typically done using a specialized comprehensive inspection tool. This tool is constructed from a single piece of material, cut to the shape and position of the two countersinks, and then supplemented with two locating pins. The tool consists of a go gauge and a stop gauge. To use it, the go gauge's base circle is placed on the countersink, and the locating pins are inserted into the flange mounting holes for positioning. If the go gauge's base circle aligns with the bottom wall of the countersink, the stop gauge is used in the same manner. If the base circle does not align smoothly with the bottom wall of the countersink, the product is qualified; otherwise, the product is unqualified.

[0003] However, ensuring the quality of this integrated inspection fixture presented significant challenges: 1. The fixture required high precision. Cutting the contoured structure (consistent with the shape and position of the two countersunk surfaces) from a single piece of material required a single-step machining process using CNC end milling or wire cutting equipment, making dimensional accuracy difficult to guarantee. 2. When inspecting the dimensions of this integrated inspection fixture, the fixture's complex structure and non-circular inspection area resulted in large measurement errors, which could easily lead to misjudgments. 3. If this one-piece integrated inspection fixture exhibited excessive wear during use, it would need to be completely replaced, resulting in a waste of resources. Utility Model Content

[0004] The purpose of the utility model is to provide a comprehensive inspection tool for detecting spot facing, which has the advantages of being easy to process and install and disassemble, and effectively solves the problems of difficult processing and difficult quality inspection of comprehensive inspection tools in the prior art.

[0005] The utility model adopts the following technical scheme: a comprehensive inspection tool for detecting spot facing, including a go gauge inspection tool and a stop gauge inspection tool, and also including a base body, the upper and lower parts of the rear side surface of the base body are fixedly provided with inspection base circles, the upper and lower parts of the base body are provided with positioning pins, and the rear ends of the positioning pins protrude from the rear side surface of the inspection base circle; the inspection base circles include a go gauge base circle and a stop gauge base circle; the one installed with the go gauge base circle is the go gauge inspection tool, and the one installed with the stop gauge base circle is the stop gauge inspection tool.

[0006] Furthermore, threaded holes are provided on the upper and lower parts of the base, a center hole is coaxially provided on the detection base circle, and a first mounting bolt passes through the center hole of the detection base circle and is threadedly connected to the threaded hole of the base.

[0007] Furthermore, a plurality of positioning holes are opened on the detection base circle along the circumferential direction, one end of the positioning pin is fixedly embedded in the base body, and the other end of the positioning pin is passed through the corresponding positioning hole and protrudes from the rear side of the detection base circle.

[0008] Furthermore, a handle is fixedly provided on the front side of the base.

[0009] Furthermore, the end of the upper positioning pin fixed to the base is circular; the end of the lower positioning pin fixed to the base is diamond-shaped; the upper positioning pin is inserted into the circular assembly hole of the base to achieve fixation with the base; the lower positioning pin is inserted into the diamond-shaped assembly hole of the base to achieve fixation with the base.

[0010] Furthermore, the upper and lower parts of the base are fixed with two detection base circles by second mounting bolts, the two detection base circles on the rear side of the base are through-gauge base circles, and the two detection base circles on the front side of the base are stop-gauge base circles.

[0011] Furthermore, the upper and lower parts of the base body are both penetrated and fixed with positioning shafts, the rear end of the positioning shaft is penetrated through the positioning hole of the through gauge base circle on the rear side, and protrudes from the rear side surface of the through gauge base circle; the front end of the positioning shaft is penetrated through the positioning hole of the stop gauge base circle on the front side, and protrudes from the front side surface of the stop gauge base circle.

[0012] Furthermore, the upper positioning shaft is circular; the position where the lower positioning shaft is fixed to the base is diamond-shaped, and the upper positioning shaft is inserted into the circular assembly hole of the base to achieve fixation with the base; the lower positioning shaft is inserted into the diamond assembly hole of the base to achieve fixation with the base through the diamond part and the diamond assembly hole.

[0013] Furthermore, handles are fixedly provided on the front side and the rear side of the base.

[0014] Furthermore, both ends of the positioning shaft are provided with chamfers to facilitate insertion into the mounting hole of the air inlet flange.

[0015] 1. The utility model sets a detection base circle and a positioning pin. During processing, because the detection base circle is a complete circular structure, a general lathe or grinder can be used for processing. At the same time, it is convenient to detect the specifications of the whole circle with a small error. The purpose of facilitating processing and ensuring quality when processing the detection base circle is achieved.

[0016] 2. The utility model sets a detection base circle, a positioning pin and a first mounting bolt. When the wear exceeds the standard at the position where the detection base circle contacts the side wall of the countersunk surface, the first mounting bolt can be removed and then the detection base circle can be rotated at a set angle so that the positioning pin and the new positioning hole on the detection base circle can be inserted and matched for overlapping use; thus, resources are saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2This is a front view structural diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the handle in the present utility model;

[0020] Figure 4 Schematic diagram of the three-dimensional structure of the detection base circle in the present utility model;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the first mounting bolt, positioning pin, detection base circle and base body in the separated state in the present invention;

[0022] Figure 6 This is a three-dimensional structural diagram of the state in which the base circle of the go gauge and the base circle of the stop gauge in the present invention are installed and fixed on the same base body;

[0023] Figure 7 This is a schematic diagram of the three-dimensional structure of the air intake flange in the present utility model;

[0024] Figure 8 It is a three-dimensional structural diagram of the second mounting bolt, stop gauge base circle, base body, positioning shaft and through gauge base circle in the present invention in the separated state in sequence.

[0025] In the figure, 1. Inlet flange; 2. Mounting hole; 3. Countersunk surface; 4. Side wall; 5. Base; 6. Detection base circle; 7. Locating pin; 8. Bottom wall; 9. Threaded hole; 10. Center hole; 11. First mounting bolt; 12. Locating hole; 13. Handle; 14. Circular assembly hole; 15. Diamond assembly hole; 16. Second mounting bolt; 17. Locating shaft; 18. Handle. DETAILED DESCRIPTION

[0026] See also Figure 1-8 The present invention will be described in detail below with reference to the accompanying drawings and embodiments:

[0027] The back of the existing volute inlet flange 1 is provided with countersunk surfaces 3 at the four mounting holes 2 , and the side walls 4 of the countersunk surfaces 3 are arc-shaped.

[0028] The utility model is a comprehensive inspection tool for detecting the spot facing, including a through gauge inspection tool and a stop gauge inspection tool, and also includes a base body 5, the upper and lower parts of the rear side of the base body 5 are fixedly provided with a detection base circle 6, the upper and lower parts of the base body 5 are provided with a positioning pin 7, the rear end of the positioning pin 7 protrudes from the rear side of the detection base circle 6 and is provided with a chamfer; the detection base circle 6 includes a through gauge base circle and a stop gauge base circle; the one with the through gauge base circle is a through gauge inspection tool, and the one with the stop gauge base circle is a stop gauge inspection tool; when in use, first use the through gauge inspection tool to place it on the spot facing 3 of the intake flange 1, so that the through gauge base circle on the upper part is fixedly provided with a detection base circle 6, and the detection base circle 6 is fixedly provided with a detection base circle 6. The circle is located in the upper countersunk surface 3, so that the lower through gauge base circle is located in the lower countersunk surface 3, and the locating pin 7 is inserted into the mounting hole 2 of the air intake flange 1 to achieve positioning; then a stop gauge inspection fixture is placed on the countersunk surface 3 of the air intake flange 1, so that the upper stop gauge base circle is located in the upper countersunk surface 3, so that the lower stop gauge base circle is located in the lower countersunk surface 3, and the locating pin 7 is inserted into the mounting hole 2 of the air intake flange 1 to achieve positioning; if the through gauge base circle can fit with the bottom wall 8 of the countersunk surface 3 and the stop gauge base circle cannot fit with the bottom wall 8 of the countersunk surface 3 smoothly, it means that the product is qualified; otherwise, the product is unqualified.

[0029] In this embodiment, threaded holes 9 are provided on the upper and lower parts of the base 5, and a center hole 10 is coaxially provided on the detection base circle 6. A first mounting bolt 11 passes through the center hole 10 of the detection base circle 6 and is threadedly connected to the threaded hole 9 of the base 5, thereby realizing a fixed connection between the detection base circle 6 and the base 5, making it easy to install and replace the detection base circle 6.

[0030] In this embodiment, a plurality of positioning holes 12 are opened on the detection base circle 6 along the circumferential direction, one end of the positioning pin 7 is fixedly embedded in the base body 5, and the other end of the positioning pin 7 is passed through the corresponding positioning hole 12 and protrudes from the rear side surface of the detection base circle 6; when in use, the upper positioning pin 7 is inserted into the upper mounting hole 2 of the air intake flange 1, and the lower positioning pin 7 is inserted into the lower mounting hole 2 of the air intake flange 1, and the circumferential surface of the detection base circle 6 is fitted with the side wall 4 of the countersinking 3. If the through gauge base circle can fit with the bottom wall 8 of the countersinking 3 and the stop gauge base circle cannot fit smoothly with the bottom wall 8 of the countersinking 3, it means that the product is qualified; otherwise, the product is unqualified.

[0031] In the above scheme, when the go gauge and the stop gauge are in use, the circumferential surface of the detection base circle 6 that often contacts the side wall 4 of the countersinking 3 is prone to wear. If the wear is large, the first mounting bolt 11 can be unscrewed, the detection base circle 6 can be removed, and it can be fixed on the base 5 after being rotated to a set angle so that the next positioning hole 12 can be installed corresponding to the positioning pin 7; the entire detection base circle 6 needs to be replaced, which is achieved by removing the first mounting bolt 11.

[0032] In this embodiment, a handle 13 is fixedly provided on the front side of the base body 5 to facilitate hand-held testing of the go gauge and the no-go gauge.

[0033] In this embodiment, the end of the upper positioning pin 7 fixed to the base 5 is circular; the end of the lower positioning pin 7 fixed to the base 5 is diamond-shaped; the upper positioning pin 7 is inserted into the circular assembly hole 14 of the base 5 to be fixed to the base 5; the lower positioning pin 7 is inserted into the diamond assembly hole 15 of the base 5 to be fixed to the base 5.

[0034] In the above scheme, the go gauge and the no-go gauge are two different gauges, and the countersunk face 3 of the intake flange 1 needs to be inspected separately; the inspection results of the go gauge and the no-go gauge are combined to judge whether the product is qualified or unqualified; in order to achieve the purpose of combining the go gauge and the no-go gauge to reduce the manufacturing cost; in this embodiment, the upper and lower parts of the base 5 are fixed with two inspection base circles 6 by the second mounting bolts 16, the two inspection base circles 6 on the rear side of the base 5 are go gauge base circles, and the two inspection base circles 6 on the front side of the base 5 are no-go gauge base circles.

[0035] When in use, first use the go gauge base circle to inspect the spot facing 3 of the air intake flange 1, then turn over the comprehensive inspection fixture and use the stop gauge base circle to inspect the spot facing 3 of the air intake flange 1; if the go gauge base circle can fit with the bottom wall 8 of the spot facing 3 and the stop gauge base circle cannot fit with the bottom wall 8 of the spot facing 3 smoothly, it means that the product is qualified; otherwise, the product is unqualified.

[0036] In this embodiment, a positioning shaft 17 is passed through and fixed to the upper and lower parts of the base 5, and the rear end of the positioning shaft 17 is passed through the positioning hole 12 of the through gauge base circle on the rear side, and protrudes from the rear side surface of the through gauge base circle; the front end of the positioning shaft 17 is passed through the positioning hole 12 of the stop gauge base circle on the front side, and protrudes from the front side surface of the stop gauge base circle; when in use, the positioning shaft 17 is inserted into the mounting hole 2 of the intake flange 1 to achieve positioning.

[0037] In this embodiment, the upper positioning shaft 17 is circular; the position where the lower positioning shaft 17 is fixed to the base 5 is diamond-shaped, and the upper positioning shaft 17 is inserted into the circular assembly hole 14 of the base 5 to achieve fixation with the base 5; the lower positioning shaft 17 is inserted into the diamond assembly hole 15 of the base 5 and is fixed to the base 5 through the diamond part cooperating with the diamond assembly hole 15.

[0038] In this embodiment, handles 18 are fixedly provided on the front side and the rear side of the base 5 .

[0039] In this embodiment, both ends of the positioning shaft 17 are chamfered to facilitate insertion into the mounting hole 2 of the air inlet flange 1 to achieve positioning.

[0040] The working principle of the present invention is as follows: when in use, the upper locating pin 7 is inserted into the upper mounting hole 2 of the air intake flange 1, and the lower locating pin 7 is inserted into the lower mounting hole 2 of the air intake flange 1, and the circumferential surface of the detection base circle 6 is fitted with the side wall 4 of the countersink 3. If the through gauge base circle can fit with the bottom wall 8 of the countersink 3 and the stop gauge base circle cannot fit with the bottom wall 8 of the countersink 3 smoothly, it means that the product is qualified; otherwise, the product is unqualified. The working principle of the technical solution in which the through gauge base circle and the stop gauge base circle are installed and fixed on a base 5 is that the through gauge base circle is first used to detect the countersink 3 of the air intake flange 1, and then the inspection fixture is turned over and the stop gauge base circle is used to detect the countersink 3 of the air intake flange 1; if the through gauge base circle can fit with the bottom wall 8 of the countersink 3 and the stop gauge base circle cannot fit with the bottom wall 8 of the countersink 3 smoothly, it means that the product is qualified; otherwise, the product is unqualified.

Claims

1. A comprehensive inspection tool for detecting countersinking, comprising a go gauge inspection tool and a stop gauge inspection tool, and also comprising a base (5), characterized in that: A detection base circle (6) is fixedly provided on the upper and lower parts of the rear side surface of the base body (5), and a positioning pin (7) is provided on the upper and lower parts of the base body (5), and the rear end of the positioning pin (7) protrudes from the rear side surface of the detection base circle (6); the detection base circle (6) includes a through gauge base circle and a stop gauge base circle; the one with the through gauge base circle is a through gauge inspection fixture, and the one with the stop gauge base circle is a stop gauge inspection fixture.

2. The comprehensive inspection tool for spot facing according to claim 1, characterized in that: The upper and lower parts of the base (5) are both provided with threaded holes (9), and the detection base circle (6) is coaxially provided with a center hole (10), which is threadedly connected to the threaded hole (9) of the base (5) through a first mounting bolt (11) passing through the center hole (10) of the detection base circle (6).

3. The comprehensive inspection tool for spot facing according to claim 1, characterized in that: The detection base circle (6) is provided with a plurality of positioning holes (12) along the circumferential direction. One end of the positioning pin (7) is fixedly embedded in the base body (5), and the other end of the positioning pin (7) is passed through the corresponding positioning hole (12) and protrudes from the rear side of the detection base circle (6).

4. The comprehensive inspection tool for spot facing according to claim 3, characterized in that: A handle (13) is fixedly provided on the front side of the base body (5).

5. The comprehensive inspection tool for spot facing according to claim 1, characterized in that: The upper locating pin (7) has a circular end fixed to the base (5); the lower locating pin (7) has a rhombus end fixed to the base (5); the upper locating pin (7) is inserted into the circular assembly hole (14) of the base (5) to achieve fixation with the base (5); the lower locating pin (7) is inserted into the rhombus assembly hole (15) of the base (5) to achieve fixation with the base (5).

6. The comprehensive inspection tool for spot facing according to claim 1, characterized in that: The upper and lower parts of the base body (5) are fixedly provided with two detection base circles (6) through second mounting bolts (16), the two detection base circles (6) on the rear side of the base body (5) are pass gauge base circles, and the two detection base circles (6) on the front side of the base body (5) are stop gauge base circles.

7. The comprehensive inspection tool for spot facing according to claim 6, characterized in that: The upper and lower parts of the base body (5) are both provided with positioning shafts (17) fixed thereto, the rear end of the positioning shaft (17) being provided through the positioning hole (12) of the through gauge base circle on the rear side and protruding from the rear side surface of the through gauge base circle; the front end of the positioning shaft (17) being provided through the positioning hole (12) of the stop gauge base circle on the front side and protruding from the front side surface of the stop gauge base circle.

8. The comprehensive inspection tool for spot facing according to claim 7, characterized in that: The upper positioning shaft (17) is circular; the position where the lower positioning shaft (17) is fixed to the base (5) is rhombus-shaped. The upper positioning shaft (17) is inserted into the circular assembly hole (14) of the base (5) to achieve fixation with the base (5); the lower positioning shaft (17) is inserted into the rhombus-shaped assembly hole (15) of the base (5) to achieve fixation with the base (5) through the rhombus-shaped portion and the rhombus-shaped assembly hole (15).

9. The comprehensive inspection tool for spot facing according to claim 6, characterized in that: The front side and the rear side of the base (5) are both fixedly provided with handles (18).

10. The comprehensive inspection tool for spot facing according to claim 7, characterized in that: Both ends of the positioning shaft (17) are provided with chamfers.

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