Auxiliary tool for detecting perpendicularity of broach base body

Abstract

The auxiliary tool comprises a measuring block and a magnet, the measuring block is composed of a first supporting foot and a second supporting foot which are connected in an L-shaped right-angle structure, the first supporting foot is transversely arranged, the second supporting foot is longitudinally arranged, and the vertical outer surface a of the second supporting foot makes contact with the broach base body. A groove used for containing a magnet is formed in the vertical outer surface a of the second supporting foot, a calibration strip arranged in the length direction is arranged on the top face of the first supporting foot, the top face of the calibration strip is in an arc shape, and a calibration point d and a calibration point e are taken at the highest points of arcs at the two ends of the calibration strip respectively. The perpendicularity of the broach base body is judged by observing the height difference between the calibration point d and the calibration point e; according to the technical scheme, operation is easy, the measuring block is attracted to the broach base body only through the magnetic force of the magnet, the specific numerical value of perpendicularity can be obtained by observing the height difference value between the two detection points, the detection result is quantified, the structure is simple, operation is convenient, and measured data are accurate.

Description

Technical Field

[0001] This utility model relates to the field of broaching tool inspection technology for tenon grooves of aircraft engine disc parts, and in particular to an auxiliary tool for inspecting the perpendicularity of the broaching tool base. Background Technology

[0002] With the continuous development of aero-engine technology, the dimensional accuracy requirements for the tenons and grooves of disc-shaped parts are becoming increasingly stringent, necessitating higher manufacturing precision for broaches. The broach base, serving as the reference for broach machining, directly affects the accuracy of the tenons and grooves due to the perpendicularity of its two side base surfaces to the bottom base surface. Currently, the method for detecting the perpendicularity of the broach base involves placing a ruler against the broach's side base surface and observing light leakage to determine the degree of perpendicularity. This method relies on visual observation, resulting in unquantifiable and inefficient results. Misjudgments in the detection conclusions lead to multiple rework processes during base surface machining. Therefore, it is essential to explore an auxiliary tool for detecting the perpendicularity of the broach base to meet the inspection needs in broach manufacturing, improve inspection efficiency, quantify inspection results, and avoid multiple rework processes. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an auxiliary tool for detecting the perpendicularity of a broach base, so as to solve the above-mentioned problems.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] An auxiliary tool for detecting the perpendicularity of a broach base includes a measuring block and a magnet. The measuring block consists of two legs connected in an L-shape at right angles. The first leg is horizontally positioned, and the second leg is vertically positioned with its vertical outer surface a in contact with the broach base. The vertical outer surface a of the second leg has a groove for placing the magnet. The top surface of the first leg has a calibration strip arranged along its length. The top surface of the calibration strip is arc-shaped, and calibration points d and e are taken at the highest points of the arc at both ends of the calibration strip, respectively. The perpendicularity of the broach base is determined by observing the height difference between calibration points d and e.

[0006] Furthermore, in the above-described invention, the bottom surface of the second support leg is provided with a positioning block, which is arranged perpendicularly to the calibration strip and contacts the detection platform line on which the broach base is placed.

[0007] Furthermore, in the above-described invention, the surface of the positioning block is arc-shaped, and the radius of the arc R1 is 2mm to 8mm.

[0008] Furthermore, in the above-described invention, the radius of the arc R2 on the top surface of the calibration strip is 2mm to 5mm.

[0009] Furthermore, in the above-described invention, the measuring block is made of high-quality high-carbon alloy tool steel.

[0010] Furthermore, in the above-described invention, the magnet is a neodymium boron magnet.

[0011] The beneficial effects of this utility model are:

[0012] This auxiliary tool for testing the perpendicularity of broaches is simple to operate and reduces the skill requirements for the inspectors. It only requires the use of a magnet to attach the measuring block to the broach base, and the specific value of perpendicularity can be obtained by observing the height difference between the two test points, thus quantifying the test results. It has a simple structure, is easy to operate, and provides accurate measurement data. At the same time, this auxiliary tool can be manufactured in different specifications according to the height range of the broach base to meet the perpendicularity testing of the base of all broaches. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is the front view of the present invention;

[0015] Figure 3 This is a side sectional view of the present invention.

[0016] In the diagram, 1-magnet, 2-measuring block, 21-foot one, 22-foot two, 3-groove, 4-calibration strip, 5-positioning block. Detailed Implementation

[0017] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0018] Please see the appendix Figure 1-3As shown, an auxiliary tool for detecting the verticality of a broach base includes a measuring block 2 and a magnet 1. The measuring block 2 consists of a first support leg 21 and a second support leg 22 connected in an L-shaped right-angle structure. The first support leg 21 is arranged horizontally, and the second support leg 22 is arranged vertically with its vertical outer surface a in contact with the broach base. The bottom of the second support leg 22 is in contact with the detection platform on which the broach base is placed. A groove 3 for placing the magnet 1 is provided on the vertical outer surface a of the second support leg 22, so that the measuring block 2 is firmly attracted to the broach base by the magnet 1. The top surface of the first support leg 21 is provided with a calibration strip 4 arranged along the length direction. The top surface of the calibration strip 4 is arc-shaped with a radius of 2mm to 5mm. Calibration points d and e are taken at the highest points of the arc at both ends of the calibration strip 4, respectively. The verticality of the broach base is determined by observing the height difference between calibration points d and calibration points e.

[0019] The bottom surface of the second support leg 22 is also provided with a positioning block 5. The positioning block 5 is arranged perpendicularly to the calibration strip 4, and the surface of the positioning block 5 is arc-shaped with a radius of 2mm to 8mm. During testing, the bottom surface of the broach base is placed on the testing platform, and the vertical outer surface a of the second support leg 22 needs to be attached to the side of the broach base. At the same time, the bottom surface of the second support leg 22 must also be placed on the testing platform to ensure that the measuring block 2 remains balanced. If the broach base is not vertical, the angle between the broach base and the testing platform will be less than 90°. In this case, if the bottom surface of the second support leg 22 is a horizontal plane, the bottom of the measuring block will not be supported, and it will be impossible to ensure that the measuring block is horizontally attached to the broach base, thus affecting the accuracy of the verticality test. Therefore, an arc-shaped positioning block 5 is provided on the bottom surface of the second support leg 22 so that the bottom surface of the second support leg 22 can be in line contact with the testing platform when the measuring block 2 tests broach bases with different verticalities, thereby improving the accuracy of the test.

[0020] In the above embodiments, preferably, the measuring block 2 is made of high-quality high-carbon alloy tool steel, which has good wear resistance, and the magnet 1 is a neodymium boron magnet, which has long-lasting magnetic force and improves the service life of the measuring block 2.

[0021] Specific work process:

[0022] Positioning block 5, equipped with magnet 1, is attached to the side of the broach base, with its vertical outer surface a in contact with the side of the broach base. Slightly moving positioning block 5 brings its bottom positioning block 5 into contact with the testing platform line. Then, by measuring the height difference between calibration points d and e at the front and rear ends of the top end using a dial indicator, the specific value of the broach base's verticality can be obtained. This method is simple to operate, has high positioning accuracy, and reduces the skill level required of the testing personnel. The measuring block 2 can be manufactured in different specifications according to the height range of the broach base to meet the verticality testing needs of all broaches.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An auxiliary tool for detecting the perpendicularity of a broach base, characterized in that, The device includes a measuring block (2) and a magnet (1). The measuring block (2) consists of a support leg (21) and a support leg (22) connected in an L-shaped right-angle structure. The support leg (21) is arranged horizontally, and the support leg (22) is arranged vertically with its vertical outer surface a in contact with the broach base. The vertical outer surface a of the support leg (22) is provided with a groove (3) for placing the magnet (1). The top surface of the support leg (21) is provided with a calibration strip (4) arranged along the length direction. The top surface of the calibration strip (4) is arc-shaped, and calibration points d and e are taken at the highest points of the arc at both ends of the calibration strip (4). The verticality of the broach base is judged by observing the height difference between calibration points d and calibration points e.

2. The auxiliary tool for detecting the perpendicularity of a broach base according to claim 1, characterized in that, The bottom surface of the second support (22) is also provided with a positioning block (5), which is arranged perpendicularly to the calibration strip (4) and is in contact with the detection platform line on which the broach base is placed.

3. The auxiliary tool for detecting the perpendicularity of a broach base according to claim 2, characterized in that, The surface of the positioning block (5) is arc-shaped, and the radius of the arc R1 is 2mm to 8mm.

4. The auxiliary tool for detecting the perpendicularity of a broach base according to claim 1, characterized in that, The radius of the top arc R2 of the calibration strip (4) is 2mm to 5mm.

5. The auxiliary tool for detecting the perpendicularity of a broach base according to claim 1, characterized in that, The measuring block (2) is made of high-quality high-carbon alloy tool steel.

6. The auxiliary tool for detecting the perpendicularity of a broach base according to claim 1, characterized in that, The magnet (1) is a neodymium boron magnet.

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