Shaft part run-out measuring support

Abstract

The utility model relates to the technical field of shaft part run-out detection tools, in particular to a shaft part run-out measurement support. The shaft part run-out measuring support comprises two supports which are arranged oppositely. The upper end of the support is provided with two supporting blocks extending upwards, the two supporting blocks are symmetrically arranged, and the included angle between the two supporting blocks is gradually increased from bottom to top. Each supporting block is provided with a rolling wheel, and the axis of each rolling wheel is parallel to the axis of the shaft part arranged on the two supports. According to the utility model, the rollers are added on the basis of the existing support, and the existing sliding friction is changed into rolling friction, so that the measuring shaft can be stable, and the problem of large deviation caused by instability of the shaft in the measuring process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft part runout detection tools, in particular to a shaft part runout measurement bracket. Background Art

[0002] At present, the runout measurement of shaft parts generally uses a pair of V-shaped irons as brackets, which slide with the shaft to complete the measurement. The measurement steps are as follows:

[0003] 1. Divide the end face of the shaft into several equal parts (generally eight equal parts). For shafts with couplings, divide them according to the bolt holes of the couplings; for shafts without couplings, divide them with the keyway as the starting point; and make permanent marks. The equal division points are used as measuring points, and all subsequent measurement records should be consistent with these marks.

[0004] 2. Install the dial indicator at the measuring position (it is best to install a dial indicator in each measuring section). The measuring rod should be perpendicular to the axis, with its center passing through the axis. Adjust the large needle of the indicator to "50", adjust the small needle to the middle, and then slowly rotate the auxiliary needle one circle. The needle should return to the starting point.

[0005] 3. Rotate the shaft slowly in the same direction, measure the readings of each point in turn, and make a record. The figure below shows a total of 5 measurement sections, and each section measures 8 points. Each section should be measured twice for calibration. The angle of each rotation should be consistent, and the reading error should be less than 0.005mm.

[0006] 4. List the bending values ​​of the same axial section in the rectangular coordinate system. The ordinate represents the bending value, and the abscissa represents the total length of the shaft and the distance between each measured section. Two straight lines can be connected according to the bending value of the azimuth diagram. The intersection of the two straight lines is the approximate maximum bending point. Then, several points are measured on both sides of the point. The measured points are connected into a smooth curve tangent to the two straight lines to form a bending curve of the axis.

[0007] The existing tool for measuring the runout of shaft parts is a pair of V-shaped irons, which are respectively set on two brackets. The shaft slides with the V-shaped iron during the measurement rotation process, which will cause the shaft to vibrate during the rotation and cause large measurement deviations; the shaft needs to be rotated when cleaning, which is relatively laborious. The V-shaped iron is very heavy, and on two brackets, adjusting the spacing during the measurement of shafts of different lengths requires re-adjusting the bracket position and level, which is inefficient. Utility Model Content

[0008] The utility model aims to provide a shaft-type parts runout measurement bracket, which can make the measuring shaft stable during the measurement process and solve the problem of large deviation caused by the instability of the shaft during the measurement process.

[0009] The utility model provides a shaft part runout measurement bracket, which comprises two supports arranged oppositely;

[0010] The upper end of the support has two support blocks extending upward, the two support blocks are symmetrically arranged, and the angle between the two support blocks gradually increases from bottom to top;

[0011] Each of the support blocks is provided with a roller, and the axis of the roller is parallel to the axis of the shaft parts provided on the two brackets.

[0012] Preferably, the distance between the two supports is adjustable.

[0013] Preferably, the shaft part runout measurement bracket further comprises a base plate, two supports are arranged on the base plate, and the supports are slidably connected to the base plate.

[0014] Preferably, the bottom plate is provided with two symmetrically arranged guide rods;

[0015] The support is penetrated on the guide rod, and the support is slidably connected with the guide rod.

[0016] Preferably, both ends of the guide rod are fixed to the base plate via guide rod supports.

[0017] Preferably, a locking structure is provided on the support.

[0018] Preferably, it also includes a driving device, and the driving device is used to drive the support to move.

[0019] Preferably, the driving device comprises a lead screw, a lead screw seat and a hand wheel;

[0020] The lead screw is arranged on the bottom plate through a lead screw seat, and the lead screw is connected with the support through a lead screw nut, and the hand wheel is arranged at one end of the lead screw.

[0021] Preferably, the roller is a bearing roller.

[0022] Beneficial effects:

[0023] Rollers are added on the basis of the existing supports, and the existing sliding friction is changed into rolling friction, so that the measuring axis can be stabilized and the problem of large deviation caused by instability of the axis during the measurement process can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1A schematic structural diagram of a shaft part runout measurement bracket provided for a specific implementation of the utility model.

[0026] Description of reference numerals:

[0027] 1: Base plate; 2: Guide rod support; 3: Support; 4: Roller; 5: Guide rod; 6: Screw rod seat; 7: Screw rod; 8: Hand wheel; 9: Locking wrench. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments 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.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] like Figure 1 As shown, this embodiment provides a shaft part runout measurement bracket, which includes two supports 3 arranged opposite to each other.

[0032] The upper end of the support 3 has two support blocks extending upward, the two support blocks are symmetrically arranged, and the angle between the two support blocks gradually increases from bottom to top, that is, the upper end of the support 3 is V-shaped.

[0033] Each support block is provided with a roller 4, and the axis of the roller 4 is parallel to the axis of the shaft parts provided on the two brackets.

[0034] Based on the above, it can be concluded that the support 3 of this embodiment adds a roller 4 on the basis of the existing support, and changes the existing sliding friction into rolling friction, which can make the measuring axis stable and solve the problem of large deviation caused by instability of the axis during measurement.

[0035] The spacing between the two supports 3 is adjustable. Specifically, the shaft part runout measurement bracket also includes a base plate 1, and the two supports 3 are arranged on the base plate 1, and the supports 3 are slidably connected to the base plate 1. The two supports 3 are arranged on the base plate 1, and the stability of the supports 3 can be further improved.

[0036] The specific connection relationship between the support 3 and the base plate 1 is:

[0037] Two symmetrically arranged guide rods 5 are arranged on the bottom plate 1, and the support 3 is penetrated on the guide rod 5, and the support 3 is slidably connected with the guide rod 5. Both ends of the guide rod 5 are fixed on the bottom plate 1 through the guide rod support 2.

[0038] The support 3 is provided with a locking structure, which includes a locking wrench 9. The locking wrench 9 drives the locking screw to lock the support 3. The support 3 does not shake when the rotating workpiece is measured, thereby avoiding errors caused by shaking.

[0039] The shaft part runout measurement bracket also includes a driving device, which is used to drive the support 3 to move.

[0040] The driving device includes a screw rod 7 , a screw rod seat 6 and a hand wheel 8 . The screw rod 7 is arranged on the base plate 1 through the screw rod seat 6 , and the screw rod 7 is connected to the support 3 through a screw rod 7 nut. The hand wheel 8 is arranged at one end of the screw rod 7 .

[0041] The roller 4 is a bearing roller 4 .

[0042] In the process of using the measuring bracket of this embodiment, the workpiece is placed on the roller 4, the center of the circle can be automatically located, and the workpiece is rotated to measure the runout. By rotating the handwheel 8 to drive the screw 7, the axial relative position of the two supports 3 can be adjusted, so that shaft workpieces of different lengths can be adapted. The support 3 can be fixed by a locking wrench so that it will not shake when the rotating workpiece is measured, thereby avoiding errors caused by shaking.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A shaft part runout measurement bracket, characterized in that: It includes two supports arranged opposite to each other; The upper end of the support has two support blocks extending upward, the two support blocks are symmetrically arranged, and the angle between the two support blocks gradually increases from bottom to top; Each of the support blocks is provided with a roller, and the axis of the roller is parallel to the axis of the shaft parts provided on the two brackets.

2. The shaft parts runout measurement bracket according to claim 1, characterized in that: The distance between the two supports is adjustable.

3. The shaft parts runout measurement bracket according to claim 1, characterized in that: The shaft part runout measurement bracket also includes a bottom plate, two supports are arranged on the bottom plate, and the supports are slidably connected to the bottom plate.

4. The shaft parts runout measurement bracket according to claim 3, characterized in that: The bottom plate is provided with two symmetrically arranged guide rods; The support is penetrated on the guide rod, and the support is slidably connected with the guide rod.

5. The shaft parts runout measurement bracket according to claim 4, characterized in that: The two ends of the guide rod are fixed on the bottom plate through guide rod supports.

6. The shaft parts runout measurement bracket according to claim 4, characterized in that: A locking structure is arranged on the support.

7. The shaft parts runout measurement bracket according to claim 1, characterized in that: It also includes a driving device, which is used to drive the support to move.

8. The shaft parts runout measurement bracket according to claim 7, characterized in that: The driving device comprises a lead screw and a lead screw seat; The lead screw is arranged on the bottom plate through a lead screw seat, and the lead screw is connected to the support through a lead screw nut.

9. The shaft parts runout measurement bracket according to claim 8, characterized in that: The driving device also includes a hand wheel, which is arranged at one end of the lead screw.

10. The shaft parts runout measurement bracket according to claim 1, characterized in that: The roller is a bearing roller.

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