CN210818751U - Micro-touch optical probe and sealing structure - Google Patents

Abstract

The embodiment of the utility model provides a micro-touch optical measuring head and a sealing structure, wherein the bottom of a shell of the measuring head is provided with an opening; the pressure spring of the micro-trigger assembly is propped against the top of the micro-trigger body, and the bottom of the micro-trigger body penetrates through the micro-trigger seat and protrudes out of the opening at the bottom of the shell; the sealing washer is the toper, and its conical wall is the wavily, has the kink, and the outside extension of sealing washer top open-ended circumference forms cyclic annular first joint portion, and the inside extension of sealing washer bottom open-ended circumference forms cyclic annular second joint portion, and the micro-trigger body periphery is arranged in to the sealing washer cover, and the sealed card of its first joint portion arranges casing bottom opening medial border in, and the sealed card of its second joint portion arranges the outside edge of the adjacent bottom of micro-trigger body in. The sealing structure is externally sealed, the protection performance is better, the replacement is convenient, the sealing ring can be replaced under the condition that the measuring head is not disassembled, and the damage to the inside of the measuring head caused by the replacement of parts is reduced; meanwhile, the sealing ring is of a conical corrugated structure, so that the sealing ring is good in toughness and long in service life.

Description

Micro-touch optical probe and sealing structure

Technical Field

The embodiment of the utility model provides a relate to sealed technical field, especially relate to a little optical gauge head and seal structure of triggering.

Background

The micro-touch optical measuring head is arranged on a numerical control machine tool, the size and the position of a cutter or a workpiece are directly measured without human intervention in a machining cycle, and the position quantity of the workpiece or the cutter is automatically corrected according to a measuring result, so that the same machine tool can machine parts with higher precision.

At present, the sealing structure of the stylus and the body of the common micro-touch optical probe comprises two major types: a contact metal sealing structure and a rubber sealing structure in the body. The contact type metal sealing structure has good wear resistance and long service life, but has poor water resistance, and water vapor easily enters the inside of the measuring head to cause the failure of the measuring head. Common this internal rubber seal structure, small smear metal get into gauge head inner seal department easily, because gauge head during operation constantly swings, easily causes the sealing washer because of the swing friction damage, influences the sealing washer life-span, simultaneously because the sealing washer is inside, it is also inconvenient to change. The defects of the two measuring head sealing technologies restrict the service life and the service performance of the micro-touch optical measuring head.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiments of the present invention are directed to a micro-touch optical probe, which has a good sealing performance, and the sealing structure does not affect the service life and the performance of the micro-touch optical probe.

The utility model discloses another technical problem that will solve provides a sealing structure that sealing performance is good and life is longer.

In order to solve the above technical problem, an embodiment of the present invention provides a micro-triggering optical probe, including a housing, a battery, a chip, a micro-triggering assembly, a probe, and a sealing ring; the battery, the chip and the micro-trigger assembly are all positioned in the shell, and the bottom of the shell is provided with an opening; the micro-trigger assembly comprises a pressure spring, a micro-trigger body and a micro-trigger seat, the pressure spring is abutted against the top of the micro-trigger body, the micro-trigger seat is annular, and the bottom of the micro-trigger body penetrates through the micro-trigger seat and protrudes out of the opening at the bottom of the shell; the measuring needle is arranged at the bottom of the micro-trigger body; the sealing washer is the toper, and its conical wall is wavy, has the kink, the outside extension of sealing washer top open-ended circumference forms annular first joint portion, the inside extension of sealing washer bottom open-ended circumference forms annular second joint portion, the sealing washer cover is arranged in the periphery of the body triggers a little to its first joint portion seals up the card and arranges in the bottom opening medial border of casing, its second joint portion seals up the card and arranges in the outer lateral border of the body adjacent bottom triggers a little.

Further, the wall thickness of the first clamping part and/or the second clamping part is larger than that of the wavy conical wall of the sealing ring.

Further, the axial section of the first clamping part and/or the second clamping part is in a semi-elliptical shape or a square shape.

Further, the casing includes casing, glass cover, lower casing and lower casing end cover, glass cover connect in between the upper and lower casing, the battery is located in the upper casing, the chip is located in the glass cover, lower casing end cover is located the bottom of casing down, the opening of casing bottom is located on the lower casing end cover, lower casing end cover butt is in little trigger seat below, in the opening part of lower casing end cover is equipped with interior annular square groove, first joint portion card is arranged in interior annular square groove to rather than interference fit.

Furthermore, an outer annular square groove is formed in the outer edge, close to the bottom, of the micro-trigger body, and the second clamping portion is clamped in the outer annular square groove and in interference fit with the outer annular square groove.

Furthermore, the micro-trigger body is in a T shape and comprises a platform and a cylinder which are vertically connected, the pressure spring is pressed against the top of the platform, the measuring needle is installed at the bottom of the cylinder, and a plurality of balls are uniformly embedded at the bottom of the platform around the cylinder along the circumferential direction; the position corresponding to each ball on the end surface adjacent to the micro-trigger seat and the platform is provided with a trigger block assembly, the position corresponding to the corresponding ball on the trigger block assembly is provided with a V-shaped groove, and when the measuring probe is not in contact with a cutter or a workpiece, the ball is in contact with two inclined surfaces of the V-shaped groove.

Furthermore, each trigger block assembly comprises a pair of micro trigger blocks, one side surface of each micro trigger block is an inclined surface, and the inclined surfaces on each pair of micro trigger blocks jointly form the V-shaped groove.

An embodiment of the utility model provides a seal structure is still provided, including the sealing washer, the sealing washer is located between a moving part and a mounting, the sealing washer is the toper, and its conical wall is wavy, has the kink, the opening circumference at sealing washer top bottom both ends all extends and forms annular joint portion, the sealing washer cover is arranged in one of them component periphery in moving part or the mounting to the joint portion at its both ends seals the card respectively and arranges in near the bottom of moving part and mounting.

Further, the wall thickness of the clamping portion is larger than that of the wavy conical wall of the sealing ring.

Further, the axial cross section of the clamping part is in a semi-elliptical shape or a square shape.

Compared with the prior art, the sealing structure in the embodiment of the utility model is external sealing, the first and second clamping parts of the sealing ring are respectively clamped at the bottom of the shell and near the bottom of the micro-trigger body, thus, the cutting fluid and the micro cutting fluid can not enter the inside of the measuring head in the using process, the protection performance is better, the replacement is convenient, the sealing ring can be replaced under the condition that the measuring head is not disassembled, and the damage to the inside of the measuring head caused by the replacement of parts is reduced; and simultaneously, the embodiment of the utility model provides an in the sealing washer be toper ripple structure, the toughness of sealing washer is better, and is nimble when the gauge head frequently swings, can not cause the sealing washer to bend and destroy the inefficacy, and the life of sealing washer is longer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is an exploded view of a preferred embodiment of a middle micro-contact optical probe according to the present invention.

Fig. 2 is a schematic front view of the embodiment shown in fig. 1.

Fig. 3 is a schematic cross-sectional view of the embodiment shown in fig. 2.

Fig. 4 is a schematic plan view of the ball of the micro-trigger body of fig. 1 in cooperation with the micro-trigger socket.

Fig. 5 is a perspective view of the sealing ring in a preferred embodiment of the middle sealing structure of the present invention.

Fig. 6 is a schematic cross-sectional view of the seal ring shown in fig. 5.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the embodiments of the present invention, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person having ordinary skill in the art should belong to the scope protected by the embodiments of the present invention.

Referring to fig. 1 to 3, a preferred embodiment of the middle micro-touch optical probe of the present invention is shown. The optical micro-trigger probe comprises a shell 1, a battery 2, a chip (not shown in the figure), a micro-trigger component, a measuring needle 4 and a sealing ring 5. The battery 2, the chip and the micro-trigger assembly are all located in the housing 1, and the bottom of the housing 1 has an opening 101. The micro-trigger assembly includes a pressure spring 31, a micro-trigger 32 and a micro-trigger seat 33. The pressure spring 31 bears against the top of the micro-trigger 32. The micro-trigger seat 33 is annular, and the bottom of the micro-trigger body 32 passes through the micro-trigger seat 33 and protrudes out of the opening 101 at the bottom of the housing 1. The stylus 4 is mounted at the bottom of the micro-trigger 32. Referring to fig. 5 and fig. 6, the sealing ring 5 is conical, and the conical wall 51 thereof is wavy and has a bending portion. The top opening of the sealing ring 5 extends outwards in the circumferential direction to form an annular first clamping portion 52, and the bottom opening of the sealing ring 5 extends inwards in the circumferential direction to form an annular second clamping portion 53. The sealing ring 5 is sleeved on the periphery of the micro-trigger 32, and the first clamping portion 52 is clamped on the inner edge of the bottom opening 101 of the shell 1 in a sealing manner, and the second clamping portion 53 is clamped on the outer edge of the micro-trigger 32 adjacent to the bottom in a sealing manner.

The first and second clamping parts 52 and 53 of the sealing ring 5 are respectively sealed and clamped near the bottom of the casing 1 and the micro-trigger body 32, and are external sealing, so that chip liquid and micro chips cannot enter the measuring head in the using process, the protection performance is better, the replacement is convenient, the sealing ring 5 can be replaced under the condition that the measuring head is not disassembled, and the damage to the measuring head due to the replacement of parts is reduced. Meanwhile, the sealing ring 5 is of a conical corrugated structure, the toughness of the sealing ring 5 is good, the measuring head can swing flexibly frequently, the sealing ring 5 cannot be bent, damaged and failed, and the service life of the sealing ring 5 is long.

The wall thickness of the first clamping portion 52 and/or the second clamping portion 53 of the seal ring 5 can be greater than the wall thickness of the wavy conical wall 51 of the seal ring 5, so that the toughness of the seal ring 5 can be enhanced, and the seal ring can swing more flexibly when a measuring head swings. In addition, the axial cross section of the first clamping portion 52 and/or the second clamping portion 53 can be semi-elliptical or square, which can enhance the sealing performance, in this embodiment, the axial cross sections of the first clamping portion 52 and the second clamping portion 53 are both semi-elliptical or square.

Specifically, the housing 1 includes an upper housing 11, a glass cover 12, a lower housing 13, and a lower housing end cap 14. A glass cap 12 is coupled between the upper and lower cases 11, 13, the battery 2 is located in the upper case 11, and the chip is located in the glass cap 12. The lower shell end cap 14 is connected to the bottom of the lower shell 13 through threads, the opening 101 in the bottom of the shell 5 is located on the lower shell end cap 14, and the lower shell end cap 14 abuts below the micro trigger seat 33. An inner annular square groove (not marked in the figure) is arranged at the opening 101 of the lower shell end cover 14, and the first clamping part 52 is clamped in the inner annular square groove and is in interference fit with the inner annular square groove. The outer edge of the micro-trigger 32 near the bottom is provided with an outer annular square groove (not labeled in the figure), and the second clamping portion 53 is clamped in the outer annular square groove and is in interference fit with the outer annular square groove.

The micro-trigger assembly further includes a micro-trigger support 34, the micro-trigger support 34 being cylindrical and located within the glass envelope 12. The pressure spring 31 and the micro-trigger body 32 are positioned in the micro-trigger support 34, and the micro-trigger seat 33 is installed at the bottom of the micro-trigger support 34. The micro-trigger 32 is "T" shaped and includes a platform 322 and a post 323 that are vertically connected. The pressure spring 31 presses against the top of the platform 322, and the probe 4 is mounted at the bottom of the column 323. Referring to fig. 4, a plurality of balls 324 are circumferentially and uniformly embedded around the column 323 at the bottom of the platform 322, and the balls 324 are insulated from the micro-trigger 32. In this embodiment, three balls 324 are mounted on the micro-trigger 32, and the three balls 324 are uniformly distributed along the circumference of the micro-trigger 120 ︒. The positions of the end surfaces of the micro-triggering seat 33 adjacent to the platform 322, which correspond to the balls 324, are provided with triggering block assemblies 331, and the triggering block assemblies 331 are insulated from the micro-triggering seat 33. In this embodiment, three sets of trigger block assemblies 331 are installed on the micro-trigger base 33, and the three sets of trigger block assemblies 331 are uniformly distributed on the micro-trigger base 33 along the circumference at an angle of 120 degrees. The triggering block assembly 331 has V-shaped grooves 332 corresponding to the balls 324, and when the stylus 4 does not contact the tool or the workpiece, each ball 324 is in point contact with two inclined surfaces 333 of the corresponding V-shaped groove 332 under the action of the pressure spring 31. Each trigger block assembly 331 comprises a pair of micro-trigger blocks 334, one side surface of each micro-trigger block 334 is an inclined surface, the micro-trigger blocks 334 are embedded on the micro-trigger seats 33, and the inclined surfaces on each pair of micro-trigger blocks 334 form a V-shaped groove 332 together.

When the micro-touch optical measuring head is used for measuring, when the top end of the measuring needle 4 swings after contacting a cutter or a workpiece (not shown in the figure), the micro-trigger body 32 moves upwards to enable the ball 324 to be separated from the trigger block component 331 on the micro-trigger seat 33, at the moment, the numerical control machine receives a detection signal, automatically records the current coordinate value, completes the detection process and waits for further data processing.

The ball 324 of the micro-touch optical measuring head is a standard part, the hole for installing the ball 324 on the micro-touch body 32 and the micro-touch block 334 can be formed on the numerical control machine tool in one step, the rotating station is not needed, the ball 324 only needs to be pressed in lightly during installation, the installation difficulty is low, the machining process of the micro-touch component is simple, the machining precision is easy to guarantee, the part qualification rate is high, the manufacturing cost can be effectively saved, and the product quality is guaranteed. In addition, the micro-trigger optical probe is conductive by the contact of the ball 324 and the inclined plane 333 on the V-shaped groove 332, and the two are in point-surface contact, so that the sensitivity of the micro-trigger assembly is high, even if the micro-trigger assembly slightly vibrates during working, the signal loss caused by poor contact can not be caused, the measurement precision of the probe is high, and the quality of parts can be ensured.

The embodiment of the utility model provides an in the embodiment of the utility model provides a seal structure not only can install on above-mentioned micro-touch optical measurement head, provides sealed protection for the gauge head, and on its product that also can be applied to other fields, this product had moving part and mounting, and sealing washer 5 is located between moving part and the mounting, provides sealed protection for the two.

The seal ring 5 is tapered, and the tapered wall 51 thereof is wavy and has a bent portion. The top and bottom openings of the sealing ring 5 extend circumferentially to form annular clamping portions 52, 53, the sealing ring 5 is sleeved on the periphery of one of the movable member or the fixed member, and the clamping portions 52, 53 are clamped and sealed near the bottoms of the movable member and the fixed member. The clamping parts 52 and 53 at the top and bottom ends of the sealing ring 5 are respectively sealed and clamped near the bottoms of the movable part and the fixed part, the sealing ring is external sealing, impurities cannot enter the inside of the product in the using process of the product, the protection performance is good, the replacement is convenient, the sealing ring 5 can be replaced under the condition that the product is not disassembled, and the damage to the inside of the product caused by part replacement is reduced. Meanwhile, the sealing ring 5 is of a conical corrugated structure, so that the toughness of the sealing ring is better, the moving part moves flexibly, the sealing ring 5 cannot be bent, damaged and failed, and the service life of the sealing ring 5 is longer.

In addition, the wall thickness of the clamping parts 52 and 53 is greater than that of the wavy conical wall 51 of the sealing ring 5, so that the toughness of the sealing ring 5 can be enhanced, and the sealing ring is more flexible when a movable part moves. The axial cross section of joint portion 52, 53 can be half oval or square to reinforcing sealing performance, can open on moving part and the mounting and establish square groove, joint portion 52, 53 seal the card and put in square groove, and interference fit reaches good sealed effect.

The above embodiments are only preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be regarded as equivalent replacement modes, and all are included in the scope of the present invention.

Claims (10)

1. A micro-triggering optical probe comprises a shell, a battery, a chip, a micro-triggering assembly, a probe and a sealing ring; the battery, the chip and the micro-trigger assembly are all positioned in the shell, and the bottom of the shell is provided with an opening; the micro-trigger assembly comprises a pressure spring, a micro-trigger body and a micro-trigger seat, the pressure spring is abutted against the top of the micro-trigger body, the micro-trigger seat is annular, and the bottom of the micro-trigger body penetrates through the micro-trigger seat and protrudes out of the opening at the bottom of the shell; the measuring needle is arranged at the bottom of the micro-trigger body; the sealing ring is characterized in that the sealing ring is conical, the conical wall of the sealing ring is wavy and is provided with a bending part, the circumferential direction of an opening in the top end of the sealing ring extends outwards to form an annular first clamping part, the circumferential direction of an opening in the bottom end of the sealing ring extends inwards to form an annular second clamping part, the sealing ring is sleeved on the periphery of the micro-triggering body, the first clamping part of the sealing ring is sealed and clamped on the inner side edge of the opening in the bottom of the shell, and the second clamping part of the sealing ring is sealed and clamped on the outer side edge of the micro-triggering body, which is adjacent to the.

2. A microelectricitc optical probe according to claim 1, wherein the wall thickness of said first and/or second clamping portion is greater than the wall thickness of the undulating conical wall of said sealing ring.

3. A micro-tactile optical gauge according to claim 1, wherein said first and/or second snap-in portion has a semi-elliptical or square axial section.

4. The micro-contact optical probe according to claim 1, wherein the housing includes an upper housing, a glass cover, a lower housing, and a lower housing end cap, the glass cover is connected between the upper and lower housings, the battery is located in the upper housing, the chip is located in the glass cover, the lower housing end cap is located at the bottom of the lower housing, the opening at the bottom of the housing is located on the lower housing end cap, the lower housing end cap abuts against the lower portion of the micro-trigger base, an inner annular square groove is provided at the opening of the lower housing end cap, and the first engaging portion is engaged with the inner annular square groove and is in interference fit therewith.

5. The optical micro-touch probe according to claim 1, wherein the micro-touch body has an outer annular square groove formed in an outer edge thereof adjacent to the bottom portion, and the second engaging portion is engaged with the outer annular square groove and is in interference fit therewith.

6. The micro-contact optical probe according to any one of claims 1 to 5, wherein the micro-trigger body is "T" shaped and comprises a platform and a column which are vertically connected, the pressure spring is pressed against the top of the platform, the probe is installed at the bottom of the column, and a plurality of balls are uniformly embedded at the bottom of the platform along the circumferential direction around the column; the position corresponding to each ball on the end surface adjacent to the micro-trigger seat and the platform is provided with a trigger block assembly, the position corresponding to the corresponding ball on the trigger block assembly is provided with a V-shaped groove, and when the measuring probe is not in contact with a cutter or a workpiece, the ball is in contact with two inclined surfaces of the V-shaped groove.

7. The microetch luminescence optical probe of claim 6 wherein each said trigger block assembly comprises a pair of microetch blocks, each microetch block having a sloped side, the sloped sides of each pair of microetch blocks together defining said V-shaped channel.

8. The sealing structure is characterized in that the sealing ring is conical, the conical wall of the sealing ring is wavy and is provided with a bending part, the circumferential directions of openings at the two ends of the top and the bottom of the sealing ring extend to form annular clamping parts, the sealing ring is sleeved on the periphery of one of the moving part and the fixing part, and the clamping parts at the two ends of the sealing ring are respectively and hermetically clamped near the bottoms of the moving part and the fixing part.

9. The seal structure of claim 8, wherein a wall thickness of the snap-in portion is greater than a wall thickness of the undulating tapered wall of the seal ring.

10. The seal structure of claim 8 or 9, wherein an axial cross-section of the catching portion is semi-elliptical or square.

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