Novel orifice run-out testing fixture

Abstract

The utility model discloses a novel orifice run-out detection tool, which relates to the technical field of orifice run-out detection and comprises a digital display dial indicator, a bottom shell of the digital display dial indicator is connected with a fixing sleeve, a measuring head of the digital display dial indicator is slidably arranged in the fixing sleeve, a connecting cylinder is arranged at the lower end of the fixing sleeve, and a fixing seat is arranged at the bottom of the connecting cylinder. A measuring rod is movably arranged in the fixed seat in a penetrating manner, the lower end of the measuring rod is connected with a top block, the upper end of the measuring rod is provided with a rotating block, and the upper end of the rotating block is in rotating contact with the lower surface of the measuring head. According to the utility model, after the fixed seat is screwed into the reference hole, the rotating block is rotated, the orifice to be measured extrudes the top block, the measuring rod axially moves in the fixed seat, the measuring head and the measuring rod synchronously axially move through the rotating block, the initial value of deviation is displayed on the digital display dial indicator, the detection speed is higher, the detection efficiency is higher, and the detection cost is lower; the method is suitable for large-scale detection.

Description

Technical Field

[0001] The utility model relates to the technical field of orifice runout detection, in particular to a novel orifice runout detection tool. Background Art

[0002] Hole runout measurement is an important task in machining and quality control. It is used to evaluate the concentricity, roundness and surface error of rotating parts or holes. When measuring hole runout, the three-coordinate detection method is generally used. It uses the position of the probe in three-dimensional space to obtain the coordinates of the workpiece, thereby calculating the specific size, shape and position deviation of the workpiece. The instrument required for three-coordinate detection is very expensive and requires very professional personnel to operate. In addition, the detection efficiency is low, which is suitable for sampling detection but not for full inspection.

[0003] Based on this, a new type of orifice runout inspection fixture is now provided, which can eliminate the disadvantages of the existing device. Utility Model Content

[0004] The utility model aims to provide a novel hole runout inspection tool to solve the problems in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A novel hole runout inspection tool comprises a digital dial indicator, wherein the bottom shell of the digital dial indicator is connected to a fixed sleeve, the measuring head of the digital dial indicator is slidably arranged in the fixed sleeve, the lower end of the fixed sleeve is provided with a connecting tube, the bottom of the connecting tube is provided with a fixed seat, a measuring rod is movably penetrated in the fixed seat, the lower end of the measuring rod is connected to a top block, the upper end of the measuring rod is provided with a rotating block, the upper end of the rotating block rotates to contact the lower surface of the measuring head, and a thread is provided on the outer side of the lower end of the fixed seat.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional solution: the upper portion of the fixing seat is threadedly connected to the inner side of the lower end of the connecting tube, and the rotating block and the measuring rod are connected via a detachable structure.

[0009] In an optional scheme: the detachable structure includes a connecting sleeve arranged at the lower end of the rotating block and coaxial with the rotating block, a threaded hole is penetrated on the side wall of the connecting sleeve, a matching set screw is threadedly connected in the threaded hole, a measuring rod is inserted into the inner side of the connecting sleeve, and the inner diameter of the connecting sleeve matches the outer diameter of the measuring rod.

[0010] In an optional solution: the fixing sleeve is threadedly connected to the connecting tube.

[0011] In an optional solution: a first auxiliary rod is provided on the fixing sleeve, a second auxiliary rod is provided on the upper end of the connecting tube, a hexagonal plate is provided in the middle of the fixing seat, and an auxiliary block is provided on the upper surface of the hexagonal plate.

[0012] In an optional solution: the lower end surface of the measuring head is flat and smooth, and the upper end surface of the rotating block is flat and smooth.

[0013] In an optional solution, the outer diameter of the measuring rod matches the inner diameter of the hole of the measuring rod on the fixing seat.

[0014] In an optional solution: an outer side of the rotating block is provided with anti-slip knurling.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The utility model screws a fixing seat into a reference hole and then rotates a rotating block, so that the orifice to be measured squeezes a top block, so that a measuring rod moves axially in the fixing seat, and a measuring head and a measuring rod move axially synchronously through the rotating block, so that an initial value of the deviation can be displayed on a digital display dial indicator, and the detection speed is faster, the detection efficiency is higher, the detection cost is lower, and the utility model is suitable for large-scale detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the left side cross-sectional structure of the utility model.

[0019] Figure 3 This is a schematic diagram of the detachable structure of the utility model.

[0020] Figure 4 It is a schematic diagram of the top block of the utility model.

[0021] Notes on the accompanying drawings: 101, digital dial indicator; 102, fixing sleeve; 103, measuring head; 201, connecting tube; 202, fixing seat; 203, rotating block; 204, measuring rod; 205, top block; 206, hexagonal plate; 301, first auxiliary rod; 302, second auxiliary rod; 303, auxiliary block; 304, connecting sleeve; 305, threaded hole; 306, set screw. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] In one embodiment, Figure 1-Figure 4As shown, a novel hole run-out gauge comprises a digital dial indicator 101, the bottom shell of the digital dial indicator 101 is connected to a fixed sleeve 102, a measuring head 103 of the digital dial indicator 101 is slidably arranged in the fixed sleeve 102, a connecting tube 201 is arranged at the lower end of the fixed sleeve 102, a fixing seat 202 is arranged at the bottom of the connecting tube 201, a measuring rod 204 is movably penetrated in the fixing seat 202, a top block 205 is connected to the lower end of the measuring rod 204, a rotating block 203 is arranged at the upper end of the measuring rod 204, the upper end of the rotating block 203 rotates to contact the lower surface of the measuring head 103, and a thread is arranged on the outer side of the lower end of the fixing seat 202.

[0024] In this embodiment, the lower end of the fixed seat 202 is screwed into the reference hole so that the top block 205 at the lower end of the measuring rod 204 contacts the hole to be measured at the bottom of the reference hole. At this time, the digital dial indicator 101 is reset to zero, and the rotating block 203 is rotated to drive the measuring rod 204 to make the top block 205 rotate along the hole to be measured. If there is a deviation between the hole to be measured and the reference hole, the hole to be measured squeezes the inclined surface on the top block 205, so that the measuring rod 204 moves in the fixed seat 202, and finally drives the measuring head 103 to move axially, and the digital dial indicator 101 displays the initial value of the deviation.

[0025] In one embodiment, Figure 2 As shown, the upper part of the fixed seat 202 is threadedly connected to the inner side of the lower end of the connecting tube 201, and the rotating block 203 and the measuring rod 204 are connected by a detachable structure. The rotating block 203 and the measuring rod 204 are detachable, and the connecting tube 201 and the fixed seat 202 are detachable. For reference holes and holes to be measured of different diameters, the corresponding fixed seat 202 and measuring rod 204 are selected, and then the fixed seat 202 is connected to the connecting tube 201, and the measuring rod 204 is connected to the rotating block 203.

[0026] In one embodiment, Figure 2 and Figure 3 As shown, the detachable structure includes a connecting sleeve 304 which is arranged at the lower end of the rotating block 203 and is coaxial with the rotating block 203. A threaded hole 305 is penetrated on the side wall of the connecting sleeve 304. The threaded hole 305 is internally threaded with a matching set screw 306. A measuring rod 204 is inserted into the inner side of the connecting sleeve 304. The inner diameter of the connecting sleeve 304 matches the outer diameter of the measuring rod 204. After the measuring rod 204 is inserted into the connecting sleeve 304, the set screw 306 is rotated with an inner hexagonal wrench to make it contact the measuring rod 204, so that the measuring rod 204 is fixed in the connecting sleeve 304. When disassembling, the set screw 306 can be loosened to remove the measuring rod 204.

[0027] In one embodiment, Figure 2As shown, the fixing sleeve 102 is threadedly connected to the connecting tube 201 , which facilitates maintenance of the structure inside the connecting tube 201 .

[0028] In one embodiment, Figure 1 and Figure 2 As shown, the fixing sleeve 102 is provided with a first auxiliary rod 301, the upper end of the connecting tube 201 is provided with a second auxiliary rod 302, the middle part of the fixing seat 202 is provided with a hexagonal plate 206, and the upper surface of the hexagonal plate 206 is provided with an auxiliary block 303, which is convenient for unscrewing the connecting tube 201 from the fixing sleeve 102, and convenient for unscrewing the fixing seat 202 from the connecting tube 201. When measuring the orifice runout, the fixing seat 202 can be quickly rotated by the auxiliary block 303 to install it in the reference hole, and the fixing seat 202 can be quickly rotated to take it out of the reference hole, thereby improving the convenience of using the orifice runout gauge.

[0029] In one embodiment, Figure 2 As shown, the lower end surface of the measuring head 103 is flat and smooth, and the upper end surface of the rotating block 203 is flat and smooth, which reduces the friction between the measuring head 103 and the rotating block 203 and reduces wear.

[0030] In one embodiment, Figure 2 As shown, the outer diameter of the measuring rod 204 matches the inner diameter of the hole of the measuring rod 204 on the fixed seat 202, which reduces the measurement error of the orifice runout gauge. The top block 205 converts the radial extrusion force of the orifice to be measured into the axial displacement of the measuring rod 204 in the fixed seat 202. If the measuring rod 204 has radial displacement in the fixed seat 202, the error of the data collected by the digital dial indicator 101 increases.

[0031] In one embodiment, Figure 1 and Figure 2 As shown, the outer side of the rotating block 203 is provided with anti-skid knurling to increase the friction force of the outer side of the rotating block 203 and prevent the rotating block 203 from slipping when rotating.

[0032] The above embodiment discloses a novel hole opening runout inspection tool. When measuring the hole opening runout, the lower end of the fixing seat 202 is screwed into the reference hole so that the top block 205 at the lower end of the measuring rod 204 contacts the hole to be measured at the bottom of the reference hole. At this time, the digital dial indicator 101 is reset to zero, and the rotating block 203 is rotated. The rotating block 203 drives the measuring rod 204 to rotate, and the measuring rod 204 drives the top block 205 to rotate along the axis of the measuring rod 204. If there is a deviation in the concentricity between the hole to be measured and the reference hole, the hole to be measured squeezes the inclined surface on the top block 205, so that the measuring rod 204 moves axially in the fixing seat 202, and the measuring rod 204 drives the rotating block 203 to move up and down. The rotating block 203 moves up and down and drives the measuring head 103 to move up and down, and the digital dial indicator 101 displays the initial value of the deviation.

[0033] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A novel hole runout gauge, comprising a digital dial gauge (101), wherein a bottom shell of the digital dial gauge (101) is connected to a fixed sleeve (102), and a measuring head (103) of the digital dial gauge (101) is slidably disposed in the fixed sleeve (102); It is characterized in that A connecting tube (201) is provided at the lower end of the fixing sleeve (102), a fixing seat (202) is provided at the bottom of the connecting tube (201), a measuring rod (204) is movably provided in the fixing seat (202), a top block (205) is connected to the lower end of the measuring rod (204), a rotating block (203) is provided at the upper end of the measuring rod (204), the upper end of the rotating block (203) is rotatably contacted with the lower surface of the measuring head (103), and a thread is provided on the outer side of the lower end of the fixing seat (202).

2. A novel hole runout inspection tool according to claim 1, characterized in that: The upper portion of the fixing seat (202) is threadedly connected to the inner side of the lower end of the connecting tube (201), and the rotating block (203) and the measuring rod (204) are connected via a detachable structure.

3. A novel hole runout inspection tool according to claim 2, characterized in that: The detachable structure comprises a connecting sleeve (304) arranged at the lower end of the rotating block (203) and coaxial with the rotating block (203); a threaded hole (305) is penetrated through the side wall of the connecting sleeve (304); a matching set screw (306) is connected to the inner thread of the threaded hole (305); a measuring rod (204) is inserted into the inner side of the connecting sleeve (304); and the inner diameter of the connecting sleeve (304) matches the outer diameter of the measuring rod (204).

4. A novel hole runout inspection tool according to claim 1, characterized in that: The fixing sleeve (102) and the connecting tube (201) are threadedly connected.

5. A novel hole runout inspection tool according to claim 2, characterized in that: The fixing sleeve (102) is provided with a first auxiliary rod (301), the upper end of the connecting tube (201) is provided with a second auxiliary rod (302), the middle of the fixing seat (202) is provided with a hexagonal plate (206), and the upper surface of the hexagonal plate (206) is provided with an auxiliary block (303).

6. A novel hole runout inspection tool according to claim 1, characterized in that: The lower end surface of the measuring head (103) is flat and smooth, and the upper end surface of the rotating block (203) is flat and smooth.

7. A novel hole runout inspection tool according to claim 1, characterized in that: The outer diameter of the measuring rod (204) matches the inner diameter of the hole of the measuring rod (204) on the fixing seat (202).

8. A novel hole runout inspection tool according to claim 1, characterized in that: The outer side of the rotating block (203) is provided with anti-slip knurling.

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