Measuring tool for measuring perpendicularity of end face and inner hole of part

Abstract

The utility model belongs to the technical field of measuring equipment, and particularly relates to a measuring tool for measuring perpendicularity of an end face and an inner hole of a part. Comprising a testing fixture body, a sliding seat, a sliding ruler, a swing rod meter, a precise linear rail and a sliding block, the testing fixture body is of an annular structure, the sliding seat is connected with the testing fixture body, and the sliding ruler is slidably connected to the sliding seat in the radial direction of the testing fixture body; the precise linear rail is connected with the sliding ruler, the extending direction of the precise linear rail faces the vertical direction, the sliding block is connected to the precise linear rail in a sliding mode, the swing rod meter is used for being connected with the precise linear rail, and a measuring meter hand on the swing rod meter is used for making contact with the inner hole face of a part. The sliding ruler slides relative to the sliding base, so that the swing rod meter can be conveniently driven to move in the horizontal direction, the measuring meter hand on the swing rod meter can be conveniently driven to make contact with the inner hole face of the part, the gap between the swing rod meter and the inner hole face of the part is reduced, and the measuring accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring equipment, and particularly relates to a measuring tool for measuring the verticality between a part end face and an inner hole. Background Art

[0002] The perpendicularity between the end face and the inner hole is an important measurement parameter in mechanical processing. Accurate measurement results can ensure the quality and precision of the workpiece.

[0003] However, the measurement of the perpendicularity between the end face and the inner hole of the part is generally carried out by three-coordinate measurement, using a special gauge mandrel for positioning, and using a dial indicator to measure the runout of the end face. Due to the gap between the mandrel and the workpiece and the influence of the measurement personnel's point selection, it is easy to cause a large measurement error. Therefore, it is necessary to design a measuring tool for measuring the perpendicularity between the end face and the inner hole of the part to solve the above problem. Summary of the invention

[0004] In view of the above problems, the utility model provides a measuring tool for measuring the perpendicularity between the end face and the inner hole of a part, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a measuring tool for measuring the perpendicularity between the end face of a part and the inner hole, comprising a gauge body, a slide seat, a sliding ruler, a rocker table, a precision linear rail and a slider, wherein the gauge body is arranged in an annular structure, the slide seat is connected to the gauge body, and the sliding ruler is slidably connected to the slide seat along the radial direction of the gauge body;

[0006] The precision linear rail is connected to the sliding ruler, the extension direction of the precision linear rail is toward the vertical direction, the sliding block is slidably connected to the precision linear rail, the pendulum meter is used to be connected to the precision linear rail, and the measuring needle on the pendulum meter is used to contact the inner hole surface of the part.

[0007] Furthermore, the measuring tool for measuring the perpendicularity between the end face of a part and the inner hole also includes screws, a fixed gauge seat, a gauge rod frame and a lock nut. The slider is connected to the fixed gauge seat via the screws, the fixed gauge seat is connected to the gauge rod frame via the lock nut, and the rocker gauge is connected to the gauge rod frame.

[0008] Furthermore, the measuring tool for measuring the perpendicularity between the end face of a part and the inner hole also includes a limit pin, and the limit pins are provided at both the upper and lower ends of the precision linear rail.

[0009] Furthermore, the measuring tool for measuring the perpendicularity between the end face of a part and the inner hole also includes a height adjustment column and a fine-thread lock nut. The height adjustment column is slidably connected to the gauge body, the height adjustment column is vertically arranged, and the lower end of the height adjustment column is used to abut the surface of the part. The fine-thread lock nut is connected to the height adjustment column and is used to fix the height adjustment column on the gauge body.

[0010] Furthermore, a plurality of height-adjusting columns are provided, and the plurality of height-adjusting columns are evenly distributed around the circumference of the gauge body.

[0011] Furthermore, the measuring tool for measuring the perpendicularity between the end face of a part and the inner hole also includes a handle, and the handle is connected to the slider.

[0012] Technical effects and advantages of the utility model:

[0013] By sliding the sliding ruler relative to the sliding seat, the pendulum scale can be driven to move in the horizontal direction, so that the measuring needle on the pendulum scale can be driven to contact the inner hole surface of the part, thereby reducing the gap between the pendulum scale and the inner hole surface of the part, and facilitating the sliding block to move up and down relative to the precision linear rail to drive the measuring needle on the pendulum scale to move up and down on the inner hole surface of the part, thereby helping to improve the measurement accuracy.

[0014] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the structure of a measuring tool for measuring the perpendicularity between a part end face and an inner hole according to an embodiment of the utility model is shown;

[0017] Figure 2 A schematic diagram showing the structure of a measuring tool for measuring the perpendicularity between a part end face and an inner hole according to another embodiment of the utility model is shown;

[0018] Figure 3 The figure shows the use state of the measuring tool for measuring the perpendicularity between the end face and the inner hole of the part according to the embodiment of the utility model.

[0019] Reference numerals: 1. Gauge body; 21. Sliding seat; 22. Sliding ruler; 31. Precision linear rail; 32. Sliding block; 4. Rocker gauge; 51. Screw; 52. Fixed gauge seat; 53. Gauge rod holder; 54. Lock nut; 55. Limit pin; 61. Height adjustment column; 62. Fine-thread lock nut; 7. Handle. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figures 1 to 3 As shown, a measuring tool for measuring the perpendicularity between the end face and the inner hole of a part according to an embodiment of the utility model comprises a gauge body 1, a slide seat 21, a sliding ruler 22, a rocker table 4, a precision linear rail 31 and a slider 32, wherein the gauge body 1 is arranged in an annular structure, the slide seat 21 is connected to the gauge body 1, and the sliding ruler 22 is slidably connected to the slide seat 21 along the radial direction of the gauge body 1;

[0022] The precision linear rail 31 is connected to the sliding ruler 22 , the extension direction of the precision linear rail 31 is toward the vertical direction, the slider 32 is slidably connected to the precision linear rail 31 , the rocker scale 4 is used to be connected to the precision linear rail 31 , and the measuring needle on the rocker scale 4 is used to contact the inner hole surface of the part 8 .

[0023] In this embodiment, by placing the measuring tool on the large end face of the part 8, the measuring needle of the rocker gauge 4 contacts the inner hole surface of the part 8, and the driving slider 32 moves up and down to the two ends of the precision linear rail 31. According to the change of the value on the rocker gauge 4, the verticality of the inner hole of the part 8 relative to the end face can be measured.

[0024] Therefore, by sliding the sliding ruler 22 relative to the slide seat 21, the pendulum scale 4 can be driven to move in the horizontal direction, so that the measuring needle on the pendulum scale 4 can be driven to contact the inner hole surface of the part 8. Secondly, by moving the slider 32 up and down relative to the precision linear rail 31, the measuring needle on the pendulum scale 4 can move up and down on the inner hole surface of the part 8, thereby measuring the verticality of the inner hole of the part 8 relative to the end face. By reducing the gap between the pendulum scale 4 and the inner hole surface of the part 8 during the measurement process, it is helpful to improve the accuracy of the measurement.

[0025] Alternatively, if Figures 1 to 3 As shown, the measuring tool for measuring the perpendicularity between the end face of a part and the inner hole also includes a screw 51, a fixed gauge seat 52, a gauge rod frame 53 and a lock nut 54. The slider 32 is connected to the fixed gauge seat 52 through the screw 51, the fixed gauge seat 52 is connected to the gauge rod frame 53 through the lock nut 54, and the rocker gauge 4 is connected to the gauge rod frame 53.

[0026] Specifically, screws 51 are provided at the four corners of the fixed meter base 52. The meter rod frame 53 includes a connecting rod, a connecting sleeve and a fixing knob. The connecting sleeve, the connecting rod and the fixed meter base 52 are connected in sequence. A plug-in hole is provided on the connecting sleeve. A plug-in column is provided on the swing rod meter 4. The plug-in column is inserted into the plug-in hole. The fixing knob is provided on the connecting sleeve. By turning the fixing knob, the connecting sleeve can be tightened to fix the plug-in column and the connecting sleeve.

[0027] In this embodiment, by providing screws 51 and fixed meter base 52, the slider 32 and the fixed meter base 52 can be connected by screws 51, thereby ensuring the stability between the slider 32 and the fixed meter base 52. By providing meter rod frame 53 and lock nut 54, one end of the meter rod frame 53 is docked with the fixed meter base 52, and the lock nut 54 is sleeved on the meter rod frame 53. By tightening the lock nut 54, the meter rod frame 53 and the fixed meter base 52 can be fixed, thereby ensuring the stability between the meter rod frame 53 and the fixed meter base 52. Therefore, by providing the fixed meter base 52 and the meter rod frame 53 to connect between the swing lever meter 4 and the slider 32, it is easier to assemble the swing lever meter 4 than directly connecting the swing lever meter 4 and the slider 32. Secondly, screws 51 and lock nut 54 can be used to fix the fixed meter base 52 and the meter rod frame 53.

[0028] Alternatively, if Figures 1 to 3 As shown, the measuring tool for measuring the perpendicularity between the end face of a part and the inner hole also includes a limit pin 55 , and the limit pins 55 are provided at both the upper and lower ends of the precision linear rail 31 .

[0029] In this embodiment, by setting limit pins 55 at the upper and lower ends of the precision linear rail 31, the movement stroke of the slider 32 is limited by the two limit pins 55 during the up and down movement of the slider 32 relative to the precision linear rail 31, that is, when the slider 32 moves up and down to the two limit pins 55, it is the limit position, and the swing rod table 4 can obtain the maximum difference, and achieve the accuracy of measuring the verticality of the end face and the inner hole of the part 8. Secondly, the movement stroke of the measuring needle on the swing rod table 4 can be controlled to prevent the measuring needle from separating from the inner hole surface of the part 8, which is conducive to preventing measurement failure.

[0030] Alternatively, if Figures 1 to 3 As shown, the measuring tool for measuring the perpendicularity between the end face of a part and the inner hole also includes a height adjustment column 61 and a fine-thread lock nut 62. The height adjustment column 61 is slidably connected to the gauge body 1. The height adjustment column 61 is vertically arranged. The lower end of the height adjustment column 61 is used to abut the surface of the part 8. The fine-thread lock nut 62 is connected to the height adjustment column 61 and is used to fix the height adjustment column 61 on the gauge body 1.

[0031] In this embodiment, before measuring the part 8, first, the measuring tool for measuring the perpendicularity between the end face of the part and the inner hole is placed on the part 8, and the position of the sliding ruler 22 in the horizontal direction is adjusted to ensure that the measuring needle on the rocker scale 4 can contact the inner hole surface of the part 8. Then, the measuring tool is placed on the flat plate, and the slider 32 is moved up and down to measure the calibration gauge, and the verticality accuracy of the measuring tool is calibrated and locked by fine-tuning the height adjustment column 61 (this step can be omitted when measuring the same type of parts 8). Thus, the measuring tool can be calibrated by the height adjustment column 61, which is beneficial to improving the accuracy of the measurement. Secondly, the height adjustment column 61 can be connected to the height adjustment column 61 by a fine-thread lock nut 62, so that the height adjustment column 61 can be fixed to the inspection tool body 1, so that after the verticality accuracy of the measuring tool is calibrated by fine-tuning the height adjustment column 61, the height adjustment column 61 can be locked by the fine-thread lock nut 62.

[0032] Optionally, a plurality of height-adjusting columns 61 are provided, and the plurality of height-adjusting columns 61 are evenly distributed around the circumference of the gauge body 1 .

[0033] Specifically, three height-adjusting columns 61 are provided.

[0034] In this embodiment, by providing a plurality of height-adjusting columns 61 , each part of the gauge body 1 can be fine-tuned, which is beneficial to improving the precision of fine-tuning, thereby ensuring the accuracy of measurement.

[0035] Alternatively, if Figure 1 and Figure 2 As shown, the measuring tool for measuring the perpendicularity between the end face of a part and the inner hole also includes a handle 7 , and the handle 7 is connected to the slider 32 .

[0036] In this embodiment, by providing a handle 7 on the slider 32 , it is convenient to hold the handle 7 to apply force to the slider 32 during the measurement process.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A measuring tool for measuring the perpendicularity between the end face and the inner hole of a part, characterized in that: The apparatus comprises a gauge body (1), a slide seat (21), a sliding ruler (22), a rocker table (4), a precision linear rail (31) and a slider (32); the gauge body (1) is arranged in an annular structure; the slide seat (21) is connected to the gauge body (1); and the sliding ruler (22) is slidably connected to the slide seat (21) along the radial direction of the gauge body (1); The precision linear rail (31) is connected to the sliding ruler (22), the extension direction of the precision linear rail (31) is toward the vertical direction, the sliding block (32) is slidably connected to the precision linear rail (31), the rocker bar gauge (4) is used to be connected to the precision linear rail (31), and the measuring needle on the rocker bar gauge (4) is used to contact the inner hole surface of the part (8).

2. The measuring tool for measuring the perpendicularity between the end face and the inner hole of a part according to claim 1, characterized in that: It also includes a screw (51), a fixed meter seat (52), a meter rod frame (53) and a lock nut (54); the slider (32) is connected to the fixed meter seat (52) through the screw (51); the fixed meter seat (52) is connected to the meter rod frame (53) through the lock nut (54); and the swing rod meter (4) is connected to the meter rod frame (53).

3. The measuring tool for measuring the perpendicularity between the end face and the inner hole of a part according to claim 2, characterized in that: It also includes a limit pin (55), and the limit pins (55) are arranged at both the upper and lower ends of the precision linear rail (31).

4. The measuring tool for measuring the perpendicularity between the end face and the inner hole of a part according to claim 3, characterized in that: The invention also comprises a height adjustment column (61) and a fine-thread lock nut (62); the height adjustment column (61) is slidably connected to the gauge body (1); the height adjustment column (61) is vertically arranged; the lower end of the height adjustment column (61) is used to abut against the surface of the part (8); the fine-thread lock nut (62) is connected to the height adjustment column (61) and is used to fix the height adjustment column (61) on the gauge body (1).

5. The measuring tool for measuring the perpendicularity between the end face and the inner hole of a part according to claim 4, characterized in that: A plurality of the height adjustment columns (61) are provided, and the plurality of the height adjustment columns (61) are evenly distributed around the circumference of the gauge body (1), and each of the height adjustment columns (61) is correspondingly provided with a fine-thread lock nut (62).

6. The measuring tool for measuring the perpendicularity between the end face and the inner hole of a part according to any one of claims 1 to 5, characterized in that: It also comprises a handle (7), wherein the handle (7) is connected to the slider (32).

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