CN214620978U

CN214620978U - Gauge for measuring diameter of inner groove

Info

Publication number: CN214620978U
Application number: CN202120759423.7U
Authority: CN
Inventors: 余正江; 许�鹏
Original assignee: Y & J Industries Co ltd
Current assignee: Y & J Industries Co ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-11-05
Anticipated expiration: 2031-04-14

Abstract

The utility model relates to a measure interior groove diameter examine utensil belongs to diameter detection device technical field. The utility model discloses a parts such as instruction list, fixed pin, last supporting sleeve, swivel mount, ejector pin, sleeve pipe, lower supporting sleeve, spring, taper sleeve and thimble. During implementation, the thimble is firstly retracted by rotating the rotary sleeve, the check tool is placed in a part to be measured, the thimble slowly extends outwards by rotating the rotary sleeve after reaching the inner groove part, and finally the thimble props against the inner hole of the groove. The indicating gauge can formulate corresponding scale marks according to the corresponding relation between the radial displacement of the ejector pin and the axial displacement of the ejector rod, and the diameter data of the inner groove can be directly obtained through the measurement data of the indicating gauge. The utility model discloses simple structure, the installation with dismantle simple and conveniently, can easily obtain the diameter data of interior slot, simultaneously because the length of sleeve pipe and ejector pin can design according to the part hole degree of depth, the slot in the deep hole also can easily be measured, the commonality is stronger.

Description

Gauge for measuring diameter of inner groove

Technical Field

The utility model relates to a measure interior groove diameter examine utensil belongs to diameter detection device technical field.

Background

Internal grooves are often found in machining for dynamic sealing, and to ensure the sealing reliability during movement, the groove diameter is required to be precisely machined, with a conventional tolerance of within 0.05 mm.

The conventional groove caliper is low in precision, high in requirement on skills of detection personnel, limited by the length of a clamping jaw and incapable of measuring a groove in a deep hole.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a measure interior groove diameter examine utensil, can detect deep hole interior groove diameter more conveniently.

The utility model provides a technical scheme that its technical problem adopted is: the gauge for measuring the diameter of the inner groove comprises an indicator, a fixed pin, an upper support sleeve, a rotary sleeve, a mandril, a sleeve, a lower support sleeve, a spring, a taper sleeve and a thimble, wherein the upper end of the sleeve is fixedly connected with the upper support sleeve, and the lower end of the sleeve is fixedly connected with the lower support sleeve; the ejector rod is arranged in the sleeve and forms sliding fit with the sleeve; the taper sleeve is arranged in the lower supporting sleeve, the taper sleeve is fixedly connected with the lower end of the ejector rod, the spring is arranged between the upper end surface of the taper sleeve and the top wall of the inner cavity of the lower supporting sleeve, and the axial direction of the spring is consistent with that of the ejector rod; the side wall of the lower support sleeve is provided with a guide hole which is arranged along the radial direction of the lower support sleeve, and the thimble is arranged in the guide hole and forms sliding fit with the guide hole; the inner end face of the ejector pin is provided with a first driving face, the outer side wall of the taper sleeve is provided with a second driving face, radial displacement of the ejector pin can be converted into axial displacement of the ejector pin through the matching of the first driving face and the second driving face, the ejector pin is provided with a reset piece in a matching mode, and the first driving face and the second driving face are attached to each other through the reset piece; the upper support sleeve is connected with the upper end of the ejector rod through a fixed pin, the axial direction of the fixed pin is arranged along the radial direction of the ejector rod, the ejector rod is fixedly connected with the fixed pin, the side wall of the upper support sleeve is provided with a strip-shaped hole matched with the fixed pin, the length direction of the strip-shaped hole is consistent with the axial direction of the ejector rod, the outer end of the fixed pin extends out of the upper support sleeve, the outer end of the fixed pin is contacted with the end face of the rotary sleeve, the rotary sleeve is sleeved on the periphery of the upper support sleeve and is connected with the upper support sleeve through threads; the indicating gauge is fixedly arranged on the upper supporting sleeve, and the measuring end of the indicating gauge is contacted with the upper end face of the ejector rod.

Further, the method comprises the following steps: the upper supporting sleeve is sleeved on the periphery of the sleeve and is connected with the sleeve through threads.

Further, the method comprises the following steps: the lower support sleeve is sleeved on the periphery of the sleeve and is connected with the sleeve through threads.

Further, the method comprises the following steps: the lower end of the taper sleeve is connected with the lower end of the ejector rod through an inner hexagonal bolt, the axial direction of the inner hexagonal bolt is consistent with the axial direction of the ejector rod, and a countersunk hole for accommodating the head of the inner hexagonal bolt is formed in the lower end face of the taper sleeve.

Further, the method comprises the following steps: the first driving surface is an arc surface or a spherical surface, and the second driving surface is an R-shaped groove surface.

Further, the method comprises the following steps: the thimble is two, and the symmetrical arrangement is in the both sides of lower support cover, and the piece that resets that the thimble set is the rand, and the peripheral direction of lower support cover is located to the rand cover, sheathes the thimble in the lower support through the rand with the thimble hoop, and the outer end of thimble has measurement end and rand mounting groove.

Further, the method comprises the following steps: a positioning pin is arranged between the matching surfaces of the ejector pin and the guide hole, the axis of the positioning pin is arranged along the radial direction of the guide hole, the ejector pin is connected with the lower supporting sleeve through the positioning pin, and the outer side wall of the ejector pin or the inner wall of the guide hole is provided with a strip-shaped groove for the positioning pin to pass through.

Further, the method comprises the following steps: the upper end of the upper supporting sleeve is fixedly connected with a locking sleeve, the middle of the locking sleeve is provided with a through hole for installing the indicating meter, the axis direction of the through hole is consistent with the axis direction of the ejector rod, and the side wall of the through hole is connected with a locking screw for locking and fixing the indicating meter.

Further, the method comprises the following steps: the locking sleeve is sleeved on the periphery of the upper supporting sleeve and is connected with the upper supporting sleeve through threads.

The utility model has the advantages that: through the rotary operation rotary sleeve, the relative position of adjustable rotary sleeve and last supporting sleeve, and then drive the overall structure of fixed pin, ejector pin and taper sleeve by the rotary sleeve and produce the displacement of ejector pin axis direction, through the cooperation of first drive face and second drive face, can realize the interconversion between the radial displacement of ejector pin and the axial displacement of ejector pin. During implementation, the thimble is firstly retracted by rotating the control rotating sleeve, the check tool is placed in a part to be measured, and after the part reaches the inner groove part, the thimble is slowly extended outwards by rotating the control rotating sleeve, and finally the thimble props against the inner hole of the groove. The indicating gauge can formulate corresponding scale marks according to the corresponding relation between the radial displacement of the ejector pin and the axial displacement of the ejector rod, and the diameter data of the inner groove can be directly obtained through the measurement data of the indicating gauge. The utility model discloses simple structure, the installation with dismantle simple and conveniently, can easily obtain the diameter data of interior slot, simultaneously because the length of sleeve pipe and ejector pin can design according to the part hole degree of depth, the slot in the deep hole also can easily be measured, the commonality is stronger. The indicating meter can be selected according to the measurement accuracy requirement, for example, a conventional dial indicator can be selected for implementation, measurement data can be easily obtained through reading of the dial indicator, measurement errors are not needed to be worried, and the design accuracy is high and can reach within 0.01 mm. The utility model discloses can extensively be used for machining part.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the top portion of the present invention;

fig. 3 is a schematic view of the structure of the lower end portion of the present invention.

The names of the corresponding parts in the drawing are as follows: the device comprises an indicator 1, a locking screw 2, a locking sleeve 3, a fixing pin 4, an upper supporting sleeve 5, a rotating sleeve 6, a mandril 7, a sleeve 8, a lower supporting sleeve 9, a spring 10, a taper sleeve 11, a positioning pin 12, a clamping ring 13, a thimble 14 and an inner hexagon bolt 15.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

It should be noted that, if there are directional indication terms, such as the directions and directions of the upper, lower, left, right, front and back, in the present invention, in order to facilitate the description of the relative position relationship between the components, the absolute position that is not the relative position relationship between the related components and the components is specifically referred to, and is only used to explain the relative position relationship between the components and the movement condition under a certain specific posture, and if the specific posture is changed, the directional indication is correspondingly changed accordingly. For example, the "upper end of the sleeve 8" described below corresponds to the right end position in fig. 1, and the "lower end of the sleeve 8" corresponds to the left end position in fig. 1.

As shown in fig. 1 to 3, the utility model comprises an indicator 1, a fixed pin 4, an upper support sleeve 5, a rotary sleeve 6, a mandril 7, a sleeve 8, a lower support sleeve 9, a spring 10, a taper sleeve 11 and a thimble 14, wherein the upper end of the sleeve 8 is fixedly connected with the upper support sleeve 5, and the lower end of the sleeve 8 is fixedly connected with the lower support sleeve 9; the ejector rod 7 is arranged in the sleeve 8 and forms sliding fit with the sleeve 8, namely the ejector rod 7 can reciprocate in the sleeve 8; the taper sleeve 11 is arranged in the lower support sleeve 9, the taper sleeve 11 is fixedly connected with the lower end of the ejector rod 7, the spring 10 is arranged between the upper end surface of the taper sleeve 11 and the top wall of the inner cavity of the lower support sleeve 9, and the axial direction of the spring 10 is consistent with the axial direction of the ejector rod 7; the side wall of the lower support sleeve 9 is provided with a guide hole arranged along the radial direction of the lower support sleeve, the thimble 14 is arranged in the guide hole and forms sliding fit in the guide hole, namely, the thimble 14 can reciprocate in the guide hole; a first driving surface is arranged on the inner end surface of the ejector pin 14, a second driving surface is arranged on the outer side wall of the taper sleeve 11, the radial displacement of the ejector pin 14 can be converted into the axial displacement of the ejector rod 7 through the matching of the first driving surface and the second driving surface, the ejector pin 14 is provided with a reset piece, and the reset piece enables the first driving surface and the second driving surface to be attached; the upper supporting sleeve 5 is connected with the upper end of the ejector rod 7 through the fixing pin 4, the axial direction of the fixing pin 4 is arranged along the radial direction of the ejector rod 7, the ejector rod 7 is fixedly connected with the fixing pin 4, the side wall of the upper supporting sleeve 5 is provided with a strip-shaped hole matched with the fixing pin 4, the length direction of the strip-shaped hole is consistent with the axial direction of the ejector rod 7, the strip-shaped hole can be a conventional rectangular hole or a waist-shaped hole, the outer end of the fixing pin 4 extends out of the upper supporting sleeve 5, the outer end of the fixing pin 4 is contacted with the end face of the rotating sleeve 6, the rotating sleeve 6 is sleeved on the periphery of the upper supporting sleeve 5 and is connected with the upper supporting sleeve 5 through threads; the indicating gauge 1 is fixedly arranged on the upper supporting sleeve 5, and the measuring end of the indicating gauge 1 is contacted with the upper end face of the ejector rod 7. For convenient assembly, the fixed connection mode of the mandril 7 and the fixed pin 4 is preferably as follows: the ejector rod 7 is provided with a pin hole matched with the fixing pin 4.

The utility model discloses a rotatory operation swivel sleeve 6, adjustable swivel sleeve 6 and the relative position of last supporting sleeve 5, and then the overall structure that drives fixed pin 4, ejector pin 7 and taper sleeve 11 by swivel sleeve 6 produces the displacement of ejector pin 7 axis direction, through the cooperation of first drive face and second drive face, can realize the interconversion between the radial displacement of thimble 14 and the axial displacement of ejector pin 7. It is understood that the rotary sleeve 6 can be designed on any side of the fixed pin 4, the position of the rotary sleeve 6 is determined according to the installation mode of the spring 10, and within the moving stroke range of the rotary sleeve 6, if the spring 10 makes the push rod 7 always have the tendency of moving upwards, the rotary sleeve 6 is arranged on the upper side (the right side in fig. 1) of the fixed pin 4, and if the spring 10 makes the push rod 7 always have the tendency of moving downwards, the rotary sleeve 6 is arranged on the lower side (the left side in fig. 1) of the fixed pin 4.

The fixed connection between the upper end of the sleeve 8 and the upper support sleeve 5 and the fixed connection between the lower end of the sleeve 8 and the lower support sleeve 9 can adopt various conventional connection modes in the prior art, such as screw connection. For the convenient assembly, effectively guarantee simultaneously and examine a major structure's axiality, the utility model discloses the preferred assembly methods who adopts do: the upper supporting sleeve 5 is sleeved on the periphery of the sleeve 8 and is connected with the sleeve 8 through threads. The lower support sleeve 9 is sleeved on the periphery of the sleeve 8 and is connected with the sleeve 8 through threads. In addition, for convenient assembly and use, the taper sleeve 11 is preferably connected with the lower end of the ejector rod 7 through an inner hexagonal bolt 15, the axial direction of the inner hexagonal bolt 15 is consistent with the axial direction of the ejector rod 7, and the lower end face of the taper sleeve 11 is provided with a countersunk hole for accommodating the head of the inner hexagonal bolt 15. This structural style is connected conveniently, and the lower terminal surface of taper sleeve 11 also does not have the screw connecting portion of evagination, is convenient for examine the utensil and puts into the inside use of the part that needs the measurement, and taper sleeve 11 is also better with ejector pin 7's axiality, is favorable to guaranteeing measurement accuracy.

It can be understood that, the cooperation of first drive face and second drive face as long as can realize the radial displacement of thimble 14 and the axial displacement between the ejector pin 7 interconversion can, can be inclined plane and inclined plane's cooperation, inclined plane and spherical surface's cooperation, spherical surface and cambered surface multiple forms such as the cooperation of cambered surface, be convenient for processing and assembly, the utility model discloses the cooperation mode of well adoption is: the first driving surface is an arc surface or a spherical surface, and the second driving surface is an R-shaped groove surface.

It is understood that the thimble 14 may be one or more pieces, and when the thimble 14 is one piece, the vertical distance between the outer end of the thimble 14 and the axis of the rod 7 corresponds to the radius data of the inner groove, and the diameter of the inner groove can also be converted by the radius data of the inner groove. When the ejector pins 14 are one piece, the lower end assembling and positioning of the device are realized by the outer circular surface of the lower supporting sleeve 9, and when the ejector pins 14 are multiple pieces, the lower end assembling and positioning of the device is realized by the self-aligning action of the ejector pins 14. Since there is an assembly gap at the position of the outer circumferential surface of the lower support sleeve 9, the thimble 14 is preferably provided in at least two pieces in order to improve the measurement accuracy.

In order to facilitate direct measurement of the diameter of the inner groove, the preferred embodiment of the present invention is: the thimble 14 is two, and the symmetrical arrangement is in the both sides of lower support cover 9, and the piece that resets that the thimble 14 set is rand 13, and the peripheral direction of lower support cover 9 is located to rand 13 cover, and through rand 13 with thimble 14 hoop on lower support cover 9, the outer end of thimble 14 has measuring end and rand mounting groove. The distance between the measuring ends of the two thimbles 14 corresponds to the diameter data of the inner groove. It can be understood that the reset piece that thimble 14 set can be to the form such as reset spring or the elastic expansion piece that every thimble 14 designed alone, for convenient assembly, the utility model discloses a be rand 13, this rand 13 can make all thimbles 14 have the trend of inside withdrawal all the time, maintain the inseparable laminating state of first drive face and second drive face. In addition, when the device works, the two ejector pins 14 synchronously extend out, and the function of aligning and positioning the device can be realized. Meanwhile, the diameters of the grooves with different specifications can be measured only by changing the length of the thimble 14.

In order to effectively prevent the thimble 14 from falling off from the guide hole, a positioning pin 12 is arranged between the matching surface of the thimble 14 and the guide hole, the axis of the positioning pin 12 is arranged along the radial direction of the guide hole, the thimble 14 is connected with the lower supporting sleeve 9 through the positioning pin 12, and the outer side wall of the thimble 14 or the inner wall of the guide hole is provided with a strip-shaped groove for the positioning pin 12 to pass through, wherein the strip-shaped groove can be a conventional rectangular groove or a kidney-shaped groove.

The indicator 1 can be selected according to the measurement accuracy requirement, for example, a conventional dial indicator can be selected for implementation, measurement data can be easily obtained through reading of the dial indicator, measurement errors are not worried about, and the design accuracy is high and can reach within 0.01 mm. For easy to assemble and debug, the upper end fixedly connected with lock sleeve 3 of upper support sleeve 5, the middle part of lock sleeve 3 has the through-hole of installation instruction table 1, and the axis direction of this through-hole is unanimous with the axis direction of ejector pin 7, is connected with the locking screw 2 that is used for locking fixed instruction table 1 at the lateral wall of this through-hole. By adopting the structure mode, the installation position of the indicating table 1 can be adjusted, and the zero position of the indicating table 1 can be conveniently adjusted. During implementation, the size of the strip-shaped hole of the upper supporting sleeve 5, the size of the conical part of the conical sleeve 11 and the stroke of the thimble 14 are designed according to the requirement of a tolerance zone, the radial displacement of the thimble 14 is changed into the axial displacement of the measuring rod of the indicating meter 1, and the axial displacement is reflected on the angular displacement of the pointer of the indicating meter 1. A standard outside micrometer can be used in advance, and the zero position of the indicator chart 1 can be adjusted according to the size of the groove to be measured. Taking a standard dial indicator as an example, the dial indicator is fixed on the locking sleeve 3 through the locking screw 2, the checking fixture is placed into the outside micrometer, the ejector rod 7 is stressed, and the position of the dial indicator 1 is adjusted to enable the pointer to be at a zero position. The indicating table 1 can make corresponding scale marks according to the corresponding relation between the radial displacement of the thimble 14 and the axial displacement of the ejector rod 7, and the diameter data of the inner groove can be directly obtained through the measuring data of the indicating table 1. Preferably, the radial displacement of the thimble 14 and the axial displacement of the carrier rod 7 can be in the range of 1: 1 is designed so that the measurement graduation marks of the indication table 1 can be directly used without additional conversion.

The fixed connection between the upper support sleeve 5 and the locking sleeve 3 can be selected from various conventional connection methods in the prior art, such as screw connection. For the convenient assembly, effectively guarantee simultaneously and examine a major structure's axiality, the utility model discloses the preferred assembly methods who adopts do: the locking sleeve 3 is sleeved on the periphery of the upper support sleeve 5 and is connected with the upper support sleeve 5 through threads.

The utility model discloses when measuring, can implement according to following method: rotating the rotary sleeve 6 downwards, retracting the thimble 14, placing the checking fixture into a part groove to be measured, slowly rotating the rotary sleeve 6 upwards to make the thimble 14 slowly extend outwards, finally propping against the inner hole of the groove, recording the reading of a dial indicator, then rotating the rotary sleeve 6 downwards, retracting the thimble 7, changing the direction to continue to measure, repeating for several times, and through data statistics, the diameter size of the groove can be easily obtained.

Claims

1. Measure interior groove diameter examine utensil, its characterized in that: the device comprises an indicator (1), a fixing pin (4), an upper support sleeve (5), a rotary sleeve (6), a mandril (7), a sleeve (8), a lower support sleeve (9), a spring (10), a taper sleeve (11) and a thimble (14), wherein the upper end of the sleeve (8) is fixedly connected with the upper support sleeve (5), and the lower end of the sleeve (8) is fixedly connected with the lower support sleeve (9); the ejector rod (7) is arranged in the sleeve (8) and forms sliding fit with the sleeve; the taper sleeve (11) is arranged in the lower support sleeve (9), the taper sleeve (11) is fixedly connected with the lower end of the ejector rod (7), the spring (10) is arranged between the upper end surface of the taper sleeve (11) and the top wall of the inner cavity of the lower support sleeve (9), and the axial direction of the spring (10) is consistent with the axial direction of the ejector rod (7); the side wall of the lower support sleeve (9) is provided with a guide hole which is arranged along the radial direction of the lower support sleeve, and the thimble (14) is arranged in the guide hole and forms sliding fit with the guide hole; a first driving surface is arranged on the inner end surface of the ejector pin (14), a second driving surface is arranged on the outer side wall of the taper sleeve (11), the radial displacement of the ejector pin (14) can be converted into the axial displacement of the ejector rod (7) through the matching of the first driving surface and the second driving surface, and the ejector pin (14) is provided with a resetting piece which enables the first driving surface to be attached to the second driving surface; the upper end of the upper supporting sleeve (5) and the upper end of the ejector rod (7) are connected through the fixing pin (4), the axial direction of the fixing pin (4) is arranged along the radial direction of the ejector rod (7), the ejector rod (7) is fixedly connected with the fixing pin (4), the side wall of the upper supporting sleeve (5) is provided with a strip-shaped hole matched with the fixing pin (4), the length direction of the strip-shaped hole is consistent with the axial direction of the ejector rod (7), the outer end of the fixing pin (4) extends out of the upper supporting sleeve (5), the outer end of the fixing pin (4) is contacted with the end face of the rotating sleeve (6), the periphery of the upper supporting sleeve (5) is sleeved with the rotating sleeve (6), and the rotating sleeve is connected with the upper supporting sleeve (5) through threads; the indicating gauge (1) is fixedly arranged on the upper supporting sleeve (5), and the measuring end of the indicating gauge (1) is contacted with the upper end face of the ejector rod (7).

2. The gauge for measuring the diameter of an inner groove according to claim 1, wherein: the upper supporting sleeve (5) is sleeved on the periphery of the sleeve (8) and is connected with the sleeve (8) through threads.

3. The gauge for measuring the diameter of an inner groove according to claim 1, wherein: the lower support sleeve (9) is sleeved on the periphery of the sleeve (8) and is connected with the sleeve (8) through threads.

4. The gauge for measuring the diameter of an inner groove according to claim 1, wherein: the lower end of the taper sleeve (11) is connected with the lower end of the ejector rod (7) through an inner hexagonal bolt (15), the axial direction of the inner hexagonal bolt (15) is consistent with the axial direction of the ejector rod (7), and a countersunk hole for accommodating the head of the inner hexagonal bolt (15) is formed in the lower end face of the taper sleeve (11).

5. The gauge for measuring the diameter of an inner groove according to claim 1, wherein: the first driving surface is an arc surface or a spherical surface, and the second driving surface is an R-shaped groove surface.

6. The gauge for measuring the diameter of an inner groove according to claim 1, wherein: thimble (14) are two, and the symmetrical arrangement is in the both sides of lower support cover (9), and the piece that resets that thimble (14) set is rand (13), and the peripheral direction of lower support cover (9) is located to rand (13) cover, and on lower support cover (9) thimble (14) hoop through rand (13), the outer end of thimble (14) has measurement end and rand mounting groove.

7. The gauge for measuring the diameter of an inner groove according to claim 1, wherein: a positioning pin (12) is arranged between the matching surfaces of the ejector pin (14) and the guide hole, the axis of the positioning pin (12) is arranged along the radial direction of the guide hole, the ejector pin (14) is connected with the lower supporting sleeve (9) through the positioning pin (12), and the outer side wall of the ejector pin (14) or the inner wall of the guide hole is provided with a strip-shaped groove for the positioning pin (12) to pass through.

8. The gauge for measuring the diameter of the inner groove according to any one of claims 1 to 7, wherein: the upper end of the upper supporting sleeve (5) is fixedly connected with a locking sleeve (3), the middle of the locking sleeve (3) is provided with a through hole for installing the indicating meter (1), the axial direction of the through hole is consistent with the axial direction of the ejector rod (7), and the side wall of the through hole is connected with a locking screw (2) used for locking and fixing the indicating meter (1).

9. The gauge for measuring the diameter of an inner groove according to claim 8, wherein: the locking sleeve (3) is sleeved on the periphery of the upper support sleeve (5) and is connected with the upper support sleeve (5) through threads.