CN114383487A - Distance-variable type distance-fixed guide sleeve - Google Patents

Abstract

The invention relates to the technical field of measurement, in particular to a variable-distance spacer guide sleeve, comprising a guide sleeve body, a plurality of sliding blocks and a plurality of spacers, wherein the sliding block is connected to the axial direction of the guide sleeve body with the guide sleeve body. The guide sleeve body is slidably connected, the sliders are arranged at intervals around the circumferential direction of the guide sleeve body, the gasket is connected with the bottom end of the slider, and several gaskets are sequentially spliced into a gasket ring; variable distance spacer sleeve Provides a general function of the distance sleeve within a certain length and size range under the same inner hole size. It can be processed in advance, reducing the waiting time of parts for hole measurement, reducing the length and size of the spacer sleeve, simple classification and convenient management.

Description

Variable distance spacer

technical field

The invention relates to the technical field of measurement, in particular to a variable-distance fixed-distance guide bush.

Background technique

When measuring the aperture size during inner hole processing, avoid radial holes, grooved holes, etc., and measure the aperture size accurately at a fixed distance. In the design of the existing spacer sleeves, radial holes, grooves, etc. are avoided by calculation according to the part design drawing, and the length dimensions of the spacer sleeves at different positions in the axial direction are given. The spacer sleeve is processed as a whole, the length of the step distance of the spacer sleeve cannot be changed, and the spacer sleeve cannot be universal. In the part production project, a large number of spacer sleeves of different sizes need to be processed.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a variable-distance fixed-distance guide sleeve, which solves the problem that the length of the fixed-distance guide sleeve cannot be changed in the prior art.

The technical scheme of the present invention for realizing the above-mentioned purpose is:

A variable-distance fixed-distance guide sleeve is characterized in that it includes a guide sleeve body and a plurality of sliders, the guide sleeve body is provided with concentric through holes, and the sliders are along the axial direction of the guide sleeve body. The sliders are arranged at intervals, and the slider is slidably connected with the guide sleeve body along the axis direction of the guide sleeve body.

The above-mentioned guide sleeve body is provided with a number of standard scales corresponding to the sliders one-to-one. The standard scales are arranged in the same direction as the sliders. The 0 ticks in the scale are flush.

The sliding block is slidably connected to the guide sleeve body through a limit chute provided on the guide sleeve body, and both ends of the limit chute pass through corresponding sections of the guide sleeve body.

The above limit chute is a dovetail groove.

The end face of the above-mentioned limit chute close to the center of the guide sleeve body is provided with a limit slot, the limit slot is located between the two ends of the limit chute, a limit block is arranged at the head end of the slider, and the slider It is connected with the limit card slot through the limit block.

The slider is provided with an adjustment screw, and the adjustment screw is used to fasten the slider and the guide sleeve body.

A gasket is arranged on the head end of the slider, the gaskets on the same plane form a ring structure concentric with the guide sleeve body, and the inner diameter of the ring is equal to the inner diameter of the concentric hole of the guide sleeve body.

The gasket is connected with the head end of the slider by screws.

The measurement method based on the variable distance type distance guide bush is characterized in that it comprises the following steps:

1) Prepare the measuring needle and the guide sleeve body that match the inner hole of the part respectively, and adjust the distance that the slider extends out of the guide sleeve body according to the position of the through hole on the peripheral side of the part;

2) Align the tail end of the guide sleeve body with the head end of the part, so that the inner hole of the part is coaxial with the through hole on the guide sleeve body;

3) Extend the measuring needle along the through hole of the guide sleeve body to the inner hole of the part until the step on the measuring needle contacts the gasket on the slider at the outermost end of the distance guide sleeve, measure the inner hole size of the part, and the measurement is completed; Then repeat the above method, rotate the measuring needle to start measuring and continue to extend until the step on the measuring needle is in contact with the gasket on the second slider on the distance guide; repeat the above method until the step on the measuring needle and the third on the distance guide. The pads on each slider are in contact; repeat the above method, after using the fixed distance to guide all the steps, stop the measurement to complete the part hole measurement; obtain the aperture size for use; take the second part and repeat the above complete process to obtain the aperture size to be used. use.

The above 1) is specifically: the distance between the center plane of the first row of radial holes on the part and the head end of the part is y, then the air outlet of the side wall of the measuring needle is far away from the head end of the guide sleeve body and the head end of the guide sleeve body The distance between y ₁ , the y ₁ ≤ y, y ₁ =Ld, wherein, L is the length between the air outlet orifice of the side wall of the set measuring needle and the step of the measuring needle, d is the length of the guide sleeve body, in Use a pneumatic gauge at y ₁ to measure the inner diameter of the part;

Avoid the distance between the center plane of the second row of radial holes and the center plane of the first row of radial holes is z, then adjust the length of the second slider to extend from the guide sleeve body to c, and extend to its head end and the guide sleeve The distance between the heads and ends of the body is z ₁ , the z ₁ ≤ z, z ₁ =Ldc, and the inner diameter of the part is measured at z1 using a pneumatic gauge;

Avoid the distance between the center plane of the second row of radial holes and the center plane of the third row of radial holes on the part is x, then adjust the length of the third slider to extend from the guide sleeve body to f, and extend to its head end and The distance between the leading ends of the guide sleeve bodies is x ₁ , the x ₁ ≤ x, x ₁ =Ldf, and the inner diameter of the part is measured at x ₁ using a pneumatic gauge;

Follow the above method until the slider marks the position dimension between the center plane of the last row of radial holes and the bottom of the part.

Beneficial effects of the present invention:

1. The variable-distance spacer sleeve provides a general function of the spacer sleeve within a certain length and size range under the same inner hole size, which can be processed in advance, reduce the waiting time of parts for hole measurement, and reduce the length and size of the spacer sleeve. , classification is simple, management is convenient.

2. Using variable distance spacer sleeves, the number of measuring needles and variable distance spacer sleeves with the same aperture size is greatly reduced than the number of special measuring needles and special spacer sleeves; variable distance spacer sleeves can be combined with It can be used in conjunction with the universal measuring needle; the variable distance spacer can be independently processed and saved without being affected by the length and size of the part, which greatly shortens the waiting time for the part to be measured.

Description of drawings

1 is a schematic diagram of the overall structure of an embodiment of the present invention;

2 is a schematic structural diagram of a side view of a guide sleeve body according to an embodiment of the present invention;

3 is a schematic structural diagram of a side view of a slider according to an embodiment of the present invention;

4 is a schematic structural diagram of a gasket according to an embodiment of the present invention;

5 is a schematic structural diagram of a slider connecting gasket according to an embodiment of the present invention;

Among them, 1-guide sleeve body; 101-guide hole; 102-limit chute; 103-limit slot; 2-slider; 3-washer; 4-adjustment screw; 5-screw.

Detailed ways

Referring to Figure 2, Figure 3, Figure 4 and Figure 5, the present invention provides a variable-distance spacer guide sleeve, comprising a guide sleeve body 1 and several sliders 2, and the guide sleeve body 1 is provided with concentric through holes , the sliders 2 are arranged at intervals along the axial direction of the guide sleeve body 1 , and the sliders 2 are slidably connected with the guide sleeve body 1 along the axial direction of the guide sleeve body 1 .

The guide sleeve body 1 is provided with a number of standard scales corresponding to the slider 2 one-to-one. The standard scales are set in the same direction as the slider 2. When the head end of the slider 2 is flush with the head end of the guide sleeve body 1, the end of the slider 2 The end is flush with the 0 scale in the standard scale. The slider 2 is slidably connected to the guide sleeve body 1 through a limit chute 102 provided on the guide sleeve body 1 , and both ends of the limit chute 102 pass through the corresponding section of the guide sleeve body 1 . The limit chute 102 is a dovetail groove.

A limit slot 103 is defined on the end surface of the limit chute 102 close to the center of the guide sleeve body 1 , the limit slot 103 is located between the two ends of the limit chute 102 , and the slider 2 is provided with a gasket 3 at the head end. The slider 2 is provided with an adjustment screw 4 , and the adjustment screw 4 is used to fasten the slider 2 and the guide sleeve body 1 . A gasket 3 is arranged on the head end of the slider 2 . Several gaskets 3 on the same plane form a ring structure concentric with the guide sleeve body 1 . The inner diameter of the ring is equal to the inner diameter of the concentric hole of the guide sleeve body 1 . The washer 3 is connected with the head end of the slider 2 by screws 5 .

The measuring method based on the variable distance type distance guide bush as before, is characterized in that, comprises the following steps:

1) Prepare the measuring needle and the guide sleeve body 1 that match the inner hole of the part respectively, and adjust the distance that the slider 2 extends out of the guide sleeve body 1 according to the position of the through hole on the peripheral side of the part;

The distance between the center plane of the first row of radial holes on the part and the head end of the part is y, then the distance between the air outlet orifice of the side wall of the measuring needle away from the head end of the guide sleeve body 1 and the head end of the guide sleeve body 1 y ₁ , the y ₁ ≤ y, y ₁ =Ld, where L is the length between the outlet orifice of the side wall of the measuring needle and the step of the measuring needle, d is the length of the guide sleeve body 1, used at y1 Pneumatic gauge measures the inner diameter of the part;

Avoid the distance between the center plane of the second row of radial holes and the center plane of the first row of radial holes is z, then adjust the length of the second slider (2) out of the guide sleeve body 1 to be c, and extend to its head The distance between the end and the head end of the guide sleeve body 1 is z ₁ , the z ₁ ≤ z, z ₁ =Ldc, and the inner diameter of the part is measured at z ₁ using a pneumatic gauge;

Avoid the distance between the center plane of the second row of radial holes and the center plane of the third row of radial holes on the part is x, then adjust the length of the third slider 2 out of the guide sleeve body 1 to be f, and extend to its first The distance between the end and the head end of the guide sleeve body 1 is x ₁ , the x ₁ ≤ x, x ₁ =Ldf, and the inner diameter of the part is measured using a pneumatic gauge at x ₁ ;

As above, until the slider 2 marks the position dimension between the center plane of the last row of radial holes and the bottom of the part.

2) Align the tail end of the guide sleeve body 1 with the head end of the part, so that the inner hole of the part is coaxial with the through hole on the guide sleeve body 1;

3) Extend the measuring needle along the through hole of the guide sleeve body 1 to the inner hole of the part until the step on the measuring needle contacts the gasket 3 on the slider 2 at the outermost end of the distance guide sleeve, and measure the inner hole size of the part, The measurement is completed; then repeat the above method, rotate the measuring needle to start measuring and continue to extend until the step on the measuring needle contacts the washer 3 on the second slider 2 of the distance guide; repeat the above method until the step on the measuring needle is in contact with the Contact the spacer 3 on the third slider 2 of the spacer guide; repeat the above method, after using all steps on the spacer guide, stop the measurement to complete the part hole measurement; get the hole size for use; take the second part and repeat the above The complete process yields the pore size for use.

The technical solutions provided by the present invention will be described in detail below in conjunction with the accompanying drawings:

Referring to FIG. 1, a variable-distance spacer guide sleeve includes a guide sleeve body 1, a slider 2 and a gasket 3. The guide sleeve body 1 is a cylindrical structure, the slider 2 is a strip structure, and the slider 2 has a The number of sliders 2 and the guide sleeve body 1 are slidably connected, so that the slider 2 can move up and down along the axis of the guide sleeve body 1 , and the gasket 3 is installed at the bottom end of the slider 2 and connected with each slider 2 The gasket 3 forms a ring structure, and a standard scale is set on the guide sleeve body 1 for reading distance.

Specifically, referring to FIG. 2 and FIG. 3 , the guide sleeve body 1 is a hollow cylindrical structure as a whole, and a guide hole 101 is opened in the middle of the guide sleeve body 1. The guide hole 101 is used to pass through the measuring needle, so the size of the guide hole 101 and the measuring needle is Matching; in order to make the guide sleeve body 1 and the slider 2 slidingly connected, a limit chute 102 is set on the guide sleeve body 1, and the limit chute 102 is a through groove, that is, the two ends of the limit chute 102 pass through the guide sleeve In order to prevent the slider 2 from moving along the radial direction of the guide sleeve body 1 when sliding on the corresponding end face of the body 1, the cross-section of the limit slot 102 is set to a combination of a rectangle and a trapezoid. The slider 2 and the limit chute 102 matches; since the bottom end of the slider 2 is connected with the gasket 3, the slider 2 cannot slide out of the guide sleeve body 1 under the limit of the gasket 3 when sliding upwards, so in order to prevent the slider 2 from sliding toward the When sliding down, it slides out from the limit chute 102, and a limit slot 103 is set on the end face of the limit chute 102 close to the axis of the guide sleeve body 1, and the upper end of the limit slot 103 passes through the upper part of the guide sleeve body 1. On the end face, the lower end of the limit slot 103 does not pass through the lower end face of the guide sleeve body 1, and a limit clip matching the limit slot 103 is also set on the slider 2. When the limit clip follows the slider 2 When moving downward, the lower end of the limit clip groove 103 faces the limit clip to limit the position, so as to ensure that the slider 2 can slide on the guide sleeve body 1 efficiently and stably.

The slider 2 matches the structure of the limit chute 102. The number of sliders 2 is 2 to 6. This time, the number of sliders 2 is 4 as an example. The sliders 2 are arranged at equal intervals along the guide sleeve body 1. The adjustment screw 4 is arranged on the slider 2. The adjustment screw 4 passes through the slider 2 from the outer side of the slider 2 and contacts the limit slot 202. The adjustment screw is perpendicular to the slider 2 to make the slider 2. The block 2 is tightly connected with the guide sleeve body 1 to prevent the slider 2 from shifting up and down, so that the measurement is more accurate and the error is smaller; when the adjustment screw 4 limits the slider 2, the top surface of the adjustment screw 4 is adjusted to the guide sleeve The vertical distance of the axis of the body 1 is not greater than the radius of the guide sleeve body 1 , that is, when the slider 2 is limited by the adjusting screw 4 .

Referring to FIG. 4 , the cushion block 3 is connected with the bottom end of the slider 2 through the connecting thread 5 , and the arc-shaped middle position of the cushion block 3 is connected with the slider 2 . The inner diameter of the spacer block 3 is smaller than the minimum spacing on the short side section of the chute 102, so that the spacer block 3 can limit the slider 2 and prevent the slider 2 from sliding upward from the guide sleeve body 1; the spacer block 3 is Arc-shaped structure, when the number of sliders 2 is 4, the circular angle of the pad 3 is 90°, and the pads 3 at the bottom end of the 4 sliders 2 are spliced into a gasket ring, and the inner diameter of the gasket ring is the same as The inner diameter of the guide hole 101 is the same, and the outer diameter of the washer ring is the same as the outer diameter of the guide sleeve body 1 .

The standard scale on the guide sleeve body 1 is correspondingly set beside the slider 2, and the slider 2 is provided with a value point. In the initial state, when the slider 2 does not slide and the gasket 3 is in contact with the guide sleeve body 1, The value point on the slider 2 is aligned with the 0 scale. When the slider 2 drives the gasket 3 to slide, the value point on the slider 2 moves on the standard scale to read its corresponding value.

Embodiment: When in use, select the guide sleeve body 1 that matches the inner diameter of the hole to be measured on the part, and then the slider 2 slides through the value point reference standard scale to read the corresponding value until the value is the depth of the hole to be measured, At this time, the slider 2 is tightened by adjusting the screw 4 to prevent the slider 2 from sliding. Finally, the spacer ring, the bottom of the slider 2 and the guide sleeve body 1 are inserted into the hole to be measured. Measurement.

Claims (10)

1. The utility model provides a variable distance formula distance guide pin bushing, its characterized in that, including the guide sleeve body (1) and a plurality of slider (2), set up concentric through-hole on the guide sleeve body (1), slider (2) set up along the axial direction interval of the guide sleeve body (1) to slider (2) along the axis direction of the guide sleeve body (1) with guide sleeve body (1) sliding connection.

2. The variable distance type distance guide sleeve according to claim 1, characterized in that a plurality of standard scales corresponding to the sliding block (2) one by one are arranged on the guide sleeve body (1), the standard scales are arranged in the same direction as the sliding block (2), and when the head end of the sliding block (2) is flush with the head end of the guide sleeve body (1), the tail end of the sliding block (2) is flush with the 0 scale in the standard scales.

3. The variable distance guide sleeve according to claim 2, characterized in that the slide block (2) is connected with the guide sleeve body (1) in a sliding manner through a limit chute (102) arranged on the guide sleeve body (1), and two ends of the limit chute (102) penetrate through corresponding sections of the guide sleeve body (1).

4. Distance guide sleeve according to claim 3, characterized in that the stop runner (102) is a dovetail groove.

5. The variable distance type distance guide sleeve according to claim 4, wherein a position limiting clamping groove (103) is formed in the end face of the position limiting sliding groove (102) close to the center of the guide sleeve body (1), the position limiting clamping groove (103) is located between two ends of the position limiting sliding groove (102), a position limiting block is arranged at the head end of the sliding block (2), and the sliding block (2) is connected with the position limiting clamping groove (103) in a matched mode through the position limiting block.

6. Distance guide sleeve according to claim 5, characterized in that the slide (2) is provided with an adjusting screw (4), which adjusting screw (4) is used to fasten the slide (2) to the guide sleeve body (1).

7. The variable distance guide sleeve according to any one of claims 1-6, characterized in that the leading end of the sliding block (2) is provided with a gasket (3), the gaskets (3) on the same plane form a circular ring structure coaxial with the guide sleeve body (1), and the inner diameter of the circular ring is equal to the inner diameter of the concentric hole of the guide sleeve body (1).

8. Distance guide sleeve according to claim 7, characterized in that the washer (3) is connected with the head end of the slide (2) by means of a screw (5).

9. Method for measuring distance-variable distance guide according to claim 7, characterized in that it comprises the following steps:

1) preparing a gauge pin and a guide sleeve body (1) which are respectively matched with the inner hole of the part, and adjusting the distance of the slide block (2) extending out of the guide sleeve body (1) according to the position of the through hole on the peripheral side of the part;

2) aligning the tail end of the guide sleeve body (1) with the head end of the part to ensure that the inner hole of the part is coaxial with the through hole on the guide sleeve body (1);

3) extending the measuring pin to the inner hole of the part along the through hole of the guide sleeve body (1) until the step on the measuring pin is contacted with the gasket (3) on the slide block (2) positioned at the outermost end of the distance guide sleeve, measuring the size of the inner hole of the part, and finishing the measurement; then repeating the method, rotating the measuring pin to start measuring and continuing to extend until the step on the measuring pin is contacted with the gasket (3) on the second sliding block (2) of the distance guide; repeating the method until the step on the gauge needle is contacted with the gasket (3) on the third sliding block (2) of the distance guide; repeating the method, and stopping measuring to finish the measurement of the part hole when all the steps are guided by the used distance; obtaining the aperture size for later use; and (5) taking a second part, and repeating the whole process to obtain the aperture size for later use.

10. Method for measuring a variable distance guide sleeve according to claim 9, characterised in that 1) is in particular:

the distance between the central plane of the first row of radial holes on the part and the head end of the part is y, the length between the air outlet orifice of the side wall of the gauge needle and the step of the gauge needle is L, the length of the guide sleeve body (1) is d, and then the distance y between the air outlet orifice of the side wall of the gauge needle, which is far away from the head end of the guide sleeve body (1), and the head end of the guide sleeve body (1)₁Said y is₁≤y，y₁L-d, in y₁Measuring the inner diameter of the part by using a pneumatic measuring instrument;

avoiding the distance z between the central plane of the second row of radial holes and the central plane of the first row of radial holes, the length of the second sliding block (2) extending out of the guide sleeve body (1) is adjusted to c, and the distance z between the head end of the second sliding block and the head end of the guide sleeve body (1) is adjusted to₁Z is said₁≤z，z₁Is L-d-c, in z₁Measuring the inner diameter of the part by using a pneumatic measuring instrument;

avoiding the distance x between the central plane of the second row of radial holes and the central plane of the third row of radial holes on the part, adjusting the length f of the third slide block (2) extending out of the guide sleeve body (1), and adjusting the distance x between the head end of the third slide block and the head end of the guide sleeve body (1)₁X is said₁≤x，x₁At x-L-d-f₁Measuring the inner diameter of the part by using a pneumatic measuring instrument;

in the above way, the position size between the central plane of the last row of radial holes and the bottom of the part is marked until the slide block (2).

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