Novel variable-diameter inspection tool

Abstract

The utility model belongs to the technical field of inspection tools, and particularly discloses a novel variable-diameter inspection tool. The detection tool mainly comprises a mandrel and a plurality of detection units, and each detection unit comprises a positioning disc, a positioning key and an adjusting pad. Grooves with the same size are formed in the top end, the bottom end, the left side and the right side of the positioning disc, a plurality of adjusting pads are arranged in each groove, and the adjusting pad, farthest from the center of the positioning disc, in each groove is correspondingly connected with one positioning key; a central spindle hole is formed in the middle of each positioning disc, and the central spindle sequentially penetrates through the central spindle holes of the multiple positioning discs. According to the variable-diameter inspection tool, the height of the positioning key is changed by adding a plurality of adjusting pads between the positioning discs and the positioning key, so that the outer diameter of the inspection tool can be adjusted to a size matched with a hole to be detected, and then the plurality of positioning discs are connected by enabling the mandrel to sequentially pass through the plurality of mandrel holes. Therefore, whether the coaxiality of the to-be-detected hole meets the standard is detected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of test tooling, and particularly relates to a novel variable-diameter test tooling. BACKGROUND

[0002] Coaxiality detection can ensure that each element of a part or device can be accurately aligned, thereby achieving the intended function, which is particularly important in mechanical systems requiring high precision. After the boring process is completed, the coaxiality of the hole needs to be tested. At present, factories usually use pipe fittings machined to the corresponding outer diameter for testing. However, this method requires the machining of multiple sizes of pipe fittings for testing, resulting in high production costs and low production efficiency.

[0003] Therefore, the utility model provides a novel variable-diameter test tooling. SUMMARY

[0004] The utility model aims at providing a novel variable-diameter test tooling that can test the coaxiality of a workpiece hole.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A novel variable-diameter test tooling includes a mandrel and multiple detection units. Each detection unit includes a positioning disc, a positioning key, and an adjustment pad.

[0007] The top and bottom ends and the left and right sides of the positioning disc are provided with grooves of the same size. Multiple adjustment pads are arranged inside each groove, and the adjustment pads in the same groove are arranged parallel to each other. The adjustment pad farthest from the center of the positioning disc in each groove is connected to a positioning key, and the top surface of the positioning key can be fitted to the inner wall of the hole to be measured.

[0008] A mandrel hole is provided at the middle position of the positioning disc, and the mandrel passes through the mandrel holes of multiple positioning discs in sequence.

[0009] Preferably, the outer contour of the adjustment pad is in the shape of a cuboid, and the width of the adjustment pad is equal to the width of the groove.

[0010] Preferably, the number of adjustment pads arranged in each groove is equal.

[0011] Preferably, the top contour of the positioning key is arc-shaped.

[0012] Preferably, multiple weight-reducing holes are provided on the positioning disc.

[0013] Preferably, the adjustment pads in the grooves at the top and bottom ends of the positioning disc are arranged horizontally, and the adjustment pads in the grooves at the left and right sides of the positioning disc are arranged vertically.

[0014] Preferably, the positioning key, the adjusting pad and the positioning disc are connected through bolts.

[0015] The utility model discloses the beneficial effects are as follows:

[0016] The utility model discloses a novel variable diameter inspection tool, the novel variable diameter inspection tool changes the position of positioning key through increasing a plurality of adjusting pads between positioning disc and positioning key, thereby can adjust the outer diameter of inspection tool to the size of being suitable for the hole to be measured, then through the plurality of positioning discs are connected by the mandrel in turn through a plurality of mandrel holes, if the mandrel can smoothly pass through the mandrel hole and can rotate clockwise and counterclockwise, then it is explained that the coaxiality of a plurality of holes to be measured meets the standard.

[0017] The number of the detection unit of the utility model discloses variable diameter inspection tool can be flexibly added and adjusted according to the number of hole to be measured, and simultaneously, the adjusting pad also has multiple specifications and sizes, thereby making the outer diameter of inspection tool can be adapted to the opening of different hole diameter size, the outer diameter of the inspection tool can realize stepless adjustment, can be adjusted in real time according to production needs, need not to process multiple sizes of pipe fittings to carry out inspection, reduce the type, quantity of inspection tool, reduce the cost of production and manufacturing. The utility model discloses inspection tool simple structure, easy operation, also can relatively improve the efficiency of coaxiality detection. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the perspective view of the utility model variable diameter detection tool;

[0019] Figure 2 It is the top view of the utility model variable diameter detection tool;

[0020] Figure 3 It is the structure schematic view of the utility model detection unit;

[0021] Figure 4 It is the local structure explosion of the utility model detection unit Figure 1 ;

[0022] Figure 5 It is the local structure explosion of the utility model detection unit Figure 2 ;

[0023] Figure 6 It is the assembly schematic view of the positioning key and the adjusting pad of the utility model;

[0024] Among them, 1-detection unit: 11-positioning disc, 121-mandrel hole, 122-weight reduction hole;13-adjusting pad, 14-positioning key;2-mandrel. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0026] In the utility model, unless another explicit provision and limitation, the terms "connect", "fix" and the like should be understood broadly, for example, "fix" can be fixed connection, also can be detachable connection, or be integrated, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirect connection through intermediate medium, can be the communication of two elements or the interaction of two elements, unless another explicit limitation. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0027] As shown in Figures 1 to 6 The utility model provides a novel variable diameter inspection tool, which can inspect the coaxiality of the hole of a workpiece, without the need to process multiple sizes of pipe fittings for inspection, thereby reducing the types and quantity of inspection tools, reducing production manufacturing cost and improving the efficiency of coaxiality detection.

[0028] As shown in Figure 1 And Figure 2 The novel variable diameter inspection tool mainly comprises a mandrel 2 and multiple detection units 1, wherein each detection unit 1 comprises a positioning disc 11, a positioning key 14 and an adjusting pad 13.

[0029] As shown in Figure 4 The top and bottom ends and the left and right sides of the positioning disc 11 are each provided with a groove of the same size, and multiple adjusting pads 13 are arranged in each groove. Figure 5 As shown in The adjusting pads 13 have multiple sizes and specifications, and the number and specification of the adjusting pads 13 placed in each groove need to be flexibly adjusted according to the size of the hole to be measured of the workpiece to be measured, so that the outer diameter of the inspection tool can be adapted to the hole of different sizes, thereby ensuring the accuracy of the coaxiality inspection. The outer contour of the adjusting pad 13 is in the shape of a cuboid, and the width of the adjusting pad 13 is equal to the width of the groove.

[0030] As shown in Figure 3 And Figure 4 The adjusting pads 13 arranged in the same groove are arranged in parallel. The adjusting pads 13 arranged in the grooves at the top and bottom ends of the positioning disc 11 are arranged horizontally, and the adjusting pads 13 arranged in the grooves at the left and right sides of the positioning disc 11 are arranged vertically.

[0031] As shown in Figure 3 And Figure 4As shown, each adjusting pad 13 in the recess farthest from the center of the positioning disc 11 corresponds to a positioning key 14, and the top profile of the positioning key 14 is arc-shaped. When the positioning disc 11 is placed in the workpiece hole to be measured, the arc-shaped top surface of the positioning key 14 can be in close contact with the inner wall of the workpiece hole to be measured, which can not only ensure that the detection tool does not damage the workpiece, but also ensure the accuracy of the coaxiality detection.

[0032] In combination Figure 6 As shown, the positioning key 14 and the adjusting pad 13 are both provided with through holes, and the bottom end of each recess of the positioning disc 11 is provided with a threaded hole, wherein the threaded hole and the through hole are oppositely arranged, and the screw can pass through the through hole and the threaded hole to complete the connection and fixation between the positioning key 14, the adjusting pad 13 and the positioning disc 11.

[0033] In combination Figure 1 And Figure 2 As shown, the positioning disc 11 is provided with a mandrel hole 121 at the middle position, the mandrel 2 passes through the mandrel holes 121 of the plurality of positioning discs 11 in sequence, and the plurality of detection units are arranged on the mandrel 2. The mandrel 2 can be used to detect whether the coaxiality of the hole to be measured is qualified.

[0034] In combination Figure 3 And Figure 4 As shown, the positioning disc 11 is provided with a plurality of weight reduction holes 122, and the plurality of weight reduction holes 122 can relatively reduce the weight of the detection tool, facilitate the carrying of the staff, and also facilitate the holding of the staff, so that the positioning disc 11 can be placed in the hole to be measured.

[0035] The use method of the variable-diameter detection tool is as follows:

[0036] Firstly, the sizes of a plurality of holes to be measured on the workpiece need to be measured, and according to the size of the hole to be measured, the appropriate size and number of adjusting pads 13 are selected and placed in the recess of the positioning disc 11, the position of the positioning key 14 is adjusted by the adjusting pad 13, and a plurality of positioning discs 11 with the same tolerance are matched; then the positioning disc 11 is installed into each hole to be measured, and finally the mandrel 2 is sequentially inserted into the mandrel hole 121 of each positioning disc 11, if the mandrel 2 can be inserted and can be rotated counterclockwise and clockwise, it indicates that the coaxiality of the plurality of holes to be measured is qualified.

[0037] In combination Figures 1 to 6The utility model discloses a novel variable diameter inspection tool, which can adjust the outer diameter of the inspection tool to a size suitable for the to-be-measured holes by increasing a plurality of adjusting pads 13 between the positioning disc 11 and the positioning key 14 to change the height of the positioning key 14, then sequentially passes the mandrels 2 through the plurality of mandrel holes 121, connects the plurality of positioning discs 11, and if the mandrels 2 can smoothly pass through the mandrel holes 121 and the mandrels 2 can rotate clockwise and counterclockwise, it indicates that the coaxiality of the plurality of to-be-measured holes meets the standard. The number of the detection units 1 of the novel variable diameter inspection tool can be flexibly added and adjusted according to the number of the to-be-measured holes, and at the same time, the adjusting pads 13 also have a plurality of specifications and sizes, so that the outer diameter of the inspection tool can be adapted to the opening of different hole diameters, the outer diameter of the inspection tool can be steplessly adjusted, the types and number of the inspection tools are reduced, the inspection tool can be adjusted in real time according to production needs, and the production manufacturing cost is effectively reduced. The utility model discloses an inspection tool which is simple in structure and easy to operate, reduces the production manufacturing cost, and can also relatively improve the efficiency of coaxiality detection.

[0038] Of course, the above description is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and the attached drawings, or direct / indirect application in other related technical fields under the utility model concept of the utility model is included in the patent protection range of the utility model, and should be protected by the utility model.

Claims

1. A novel variable diameter inspection tool, characterized by, The device comprises a mandrel and a plurality of detection units, wherein each detection unit comprises a positioning disc, a positioning key and an adjusting pad; The top, bottom and left and right sides of the positioning disc are provided with grooves of the same size, a plurality of adjusting pads are arranged in each groove, the adjusting pads in the same groove are arranged in parallel, one positioning key is connected to the adjusting pad farthest from the center of the positioning disc in each groove, and the top surface of the positioning key can be attached to the inner wall of the hole to be measured; A mandrel hole is formed in the middle of the positioning disc, and the mandrel sequentially passes through the mandrel holes of the plurality of positioning discs.

2. A novel variable diameter inspection tool as claimed in claim 1, wherein, The outer contour of the adjusting pad is in the shape of a cuboid, and the width of the adjusting pad is equal to the width of the groove.

3. A novel variable diameter inspection tool as claimed in claim 1, wherein, The number of adjusting pads arranged in each groove is equal.

4. A novel variable diameter inspection tool as claimed in claim 1, wherein, The top of the positioning key is arc-shaped.

5. A novel variable diameter inspection tool as claimed in claim 1, wherein, A plurality of weight reduction holes are formed in the positioning disc.

6. A novel variable diameter inspection tool as claimed in claim 1, wherein, The adjusting pads in the grooves at the top and bottom ends of the positioning disc are horizontally arranged, and the adjusting pads in the grooves at the left and right sides of the positioning disc are vertically arranged.

7. A novel variable diameter inspection tool as claimed in claim 1, wherein, The positioning key, the adjusting pad and the positioning disc are connected by bolts.

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