CN214951229U

CN214951229U - Height measuring device

Info

Publication number: CN214951229U
Application number: CN202120643737.0U
Authority: CN
Inventors: 邰震云
Original assignee: Aien Precision Wuxi Co ltd
Current assignee: Aien Precision Wuxi Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-11-30
Anticipated expiration: 2031-03-30

Abstract

The utility model relates to the technical field of measuring devices and discloses a height measuring device, which comprises a positioning component and a measuring component, wherein the positioning component fixes a workpiece, and the workpiece is provided with a reference surface and a surface to be measured; the measuring component comprises a displacement sensor, a sleeve fixedly connected with the displacement sensor and a measuring head arranged in the sleeve in a penetrating way, and the measuring head is connected to the measuring end of the displacement sensor; the measuring component can move relative to the positioning component and has a measuring position and a position to be measured, when the measuring component is located at the position to be measured, the measuring head is separated from the surface to be measured, the sleeve is separated from the reference surface, and the measuring head is in a natural extension state; when the measuring assembly is located at the measuring position, the measuring head is abutted to the surface to be measured, the sleeve is abutted to the reference surface, and the measuring head is in a compressed state. The utility model provides a height measuring device comes out through the height measurement of the removal of gauge head with the work piece that awaits measuring, and easy operation is convenient, and measurement accuracy is high, low cost, and inspection efficiency is high.

Description

Height measuring device

Technical Field

The utility model relates to a measuring device technical field especially relates to a height measuring device.

Background

The oil nozzle is a key part in a fuel system, and the manufacturing level of the oil nozzle directly influences the injection effect of the fuel system, so that various indexes of an engine are influenced. The conical surface of the oil nozzle is structurally hidden and difficult to observe and measure, and the height of the conical surface must be measured by a measuring and checking tool. The existing conical surface height detection device adopts a three-coordinate measuring instrument, and utilizes the three-coordinate measuring instrument to carry out multiple point sampling on a conical surface, so as to obtain the taper and the distance through calculation. The three-coordinate measuring instrument has high price, complex operation, needs operators to have related professional knowledge, has extremely low efficiency, and cannot meet the requirement of hundred-degree inspection in the batch production process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a height measuring device, easy operation is convenient, and measurement accuracy is high, low cost, and inspection efficiency is high.

To achieve the purpose, the utility model adopts the following technical proposal:

a height measuring device comprising:

the positioning assembly is used for fixing a workpiece, and the workpiece is provided with a reference surface and a surface to be measured which are arranged at intervals;

the measuring assembly comprises a displacement sensor and a sleeve fixedly connected with the displacement sensor, and the displacement sensor is provided with a measuring head capable of moving relative to the sleeve;

the measuring component can move relative to the positioning component and has a measuring position and a position to be measured, when the measuring component is located at the position to be measured, the measuring head is separated from the surface to be measured, the sleeve is separated from the reference surface, and the measuring head is in a natural extension state; when the measuring assembly is located at the measuring position, the measuring head is abutted to the surface to be measured, the sleeve is abutted to the reference surface, and the measuring head is in a compressed state.

Preferably, the positioning device further comprises a base and a first sliding table arranged on the base in a sliding mode along a first direction, and the positioning assembly is fixedly arranged on the first sliding table.

Preferably, the measuring device further comprises a driving assembly, and the driving assembly is used for driving the measuring assembly to move between the measuring position and the position to be measured along the vertical direction.

Preferably, the driving assembly comprises a driver and a connecting assembly, and the connecting assembly comprises a connecting piece connected with the sleeve, a second sliding table arranged on the connecting piece, and a sliding rail in sliding fit with the second sliding table; the height measuring device further comprises a back plate, the sliding rail is arranged on the back plate and extends along the vertical direction, and the driver is fixed on the back plate and connected with the second sliding table.

Preferably, the connecting piece comprises a first hoop and a second hoop, the first hoop is fixedly connected with the second sliding table, the second hoop is connected with the first hoop through bolts, and the first hoop and the second hoop are clamped on the sleeve.

Preferably, the driving assembly further comprises a first proximity switch and a second proximity switch which are arranged on the back plate at intervals, and the first proximity switch and the second proximity switch are used for detecting the position of the second sliding table.

Preferably, the positioning assembly comprises a positioning plate, a through hole is formed in the positioning plate, the workpiece penetrates through the through hole, and the workpiece can be abutted against the upper surface of the positioning plate and partially extends out of the through hole;

the connecting seats are arranged below the positioning plate at intervals;

the two ends of the equal-height block are respectively connected with the positioning plate and the connecting seat;

the floating assembly comprises a floating pin and a spring, the floating pin is arranged in the connecting seat in a sliding mode, and the spring can drive the floating pin to slide relative to the connecting seat so that the floating pin abuts against the workpiece.

Preferably, the positioning plate includes:

the positioning sleeve connecting plate is fixed on the equal-height block;

the locating sleeve is detachably connected with the locating sleeve connecting plate, and the through hole is formed in the locating sleeve.

Preferably, the floating pin includes:

the floating ejector rod is arranged in the connecting seat in a sliding manner, and the spring can drive the floating ejector rod to slide in the connecting seat;

the alloy ball is arranged at the top end of the floating ejector rod and can be abutted against the workpiece;

and the protection ring is sleeved on the floating ejector rod and limits the alloy ball at the top end of the floating ejector rod.

Preferably, the positioning assembly further comprises a limiting pin, a limiting groove is formed in the outer peripheral surface of the floating ejector rod, the limiting groove extends in the vertical direction, and one end of the limiting pin is inserted into the limiting groove.

The utility model has the advantages that:

the utility model provides a height measuring device fixes the work piece on locating component, remove measuring component to the position of awaiting measuring, the gauge head separates with the face of awaiting measuring this moment, the gauge head is in the natural extension state, sleeve and reference surface separation, remove measuring component to the measuring position, the gauge head is in the compression state with treating the side butt this moment, sleeve and reference surface butt, through removing measuring component to the measuring position by the position of awaiting measuring, the relative telescopic displacement distance of gauge head is the distance between face of awaiting measuring and the reference surface promptly. The method is simple and convenient to operate, high in measurement precision, low in cost and high in inspection efficiency.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a height measuring device according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a height measuring device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a height measuring device moving assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a floating assembly of a height measuring device according to an embodiment of the present invention.

In the figure:

1. a measurement assembly; 11. a displacement sensor; 12. a connecting rod; 13. a measuring head; 14. a sleeve; 15. a limiting sleeve;

2. a positioning assembly; 21. positioning a plate; 211. the positioning sleeve is connected with the connecting plate; 212. a positioning sleeve; 22. a connecting seat; 23. equal-height blocks; 24. a floating assembly; 241. a floating pin; 2411. a floating ejector rod; 2412. alloy balls; 2413. a guard ring; 242. a spring; 25. a spacing pin;

3. a drive assembly; 31. a driver; 32. a connecting assembly; 321. a connecting member; 3211. a first hoop; 3212. a second hoop; 322. a second sliding table; 323. a slide rail; 33. a first proximity switch; 34. a second proximity switch;

4. a base; 5. a first sliding table; 51. a plug screw; 6. a back plate; 7. a workpiece; 8. an operation table; 9. and (5) footing.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

As shown in fig. 1 to 4, the present embodiment provides a height measuring apparatus, including a positioning assembly 2 and a measuring assembly 1, where the positioning assembly 2 is used to fix a workpiece 7, and the workpiece 7 has a reference surface and a surface to be measured which are arranged at intervals; the measuring assembly 1 comprises a displacement sensor 11 and a sleeve 14 fixedly connected with the displacement sensor 11, wherein the displacement sensor 11 is provided with a measuring head 13 capable of moving relative to the sleeve 14; the measuring component 1 can move relative to the positioning component 2 and has a measuring position and a position to be measured, when the measuring component 1 is located at the position to be measured, the measuring head 13 is separated from the surface to be measured, the sleeve 14 is separated from the reference surface, and the measuring head 13 is in a natural extension state; when the measuring assembly 1 is located at the measuring position, the measuring head 13 is abutted with the surface to be measured, the sleeve 14 is abutted with the reference surface, and the measuring head 13 is in a compressed state. In this embodiment, the stylus 13 is a ruby stylus.

The height measuring device provided by the embodiment fixes the workpiece 7 on the positioning component 2, moves the measuring component 1 to the position to be measured, at the moment, the measuring head 13 is separated from the surface to be measured, the measuring head 13 is in a natural extension state, the sleeve 14 is separated from the reference surface, the measuring component 1 is moved to the measuring position, at the moment, the measuring head 13 is abutted against the side surface to be measured, the measuring head 13 is in a compression state, the sleeve 14 is abutted against the reference surface, the measuring component 1 is moved to the measuring position from the position to be measured, and the moving distance of the measuring head 13 relative to the sleeve 14 is the distance between the surface to be measured and the reference surface. The method is simple and convenient to operate, high in measurement precision, low in cost and high in inspection efficiency.

Specifically, be equipped with connecting rod 12 between displacement sensor 11 and gauge head 13, connecting rod 12 one end is fixed with displacement sensor 11's measuring end, and the other end passes through screw-thread fit fixed connection in gauge head 13, and gauge head 13 and connecting rod 12 all slide and set up in the inside of sleeve 14, and the pot head of keeping away from displacement sensor 11 at sleeve 14 is equipped with stop collar 15, and sleeve 14 is located to the partial cover of stop collar 15, and another part stretches out sleeve 14. When the measuring assembly 1 is located at the measuring position, the measuring head 13 is abutted against the surface to be measured, the sleeve 14 is abutted against the reference surface, the measuring head 13 is in a compressed state, and a part of the limiting sleeve 15 extending out of the sleeve 14 is sleeved on the workpiece 7 to limit the workpiece 7. In this embodiment, the surface to be measured of the workpiece 7 is a conical surface, when the measuring assembly 1 is located at the measuring position, the measuring head 13 is tangent to the conical surface of the workpiece 7, the measured value is transmitted to the displacement sensor 11, the displacement sensor 11 transmits the value to the computer, and the height of the conical surface of the workpiece 7 is measured through a program, so as to check whether the workpiece 7 is qualified.

Further, as shown in fig. 1, the height measuring device provided in this embodiment further includes a base 4 and a first sliding table 5 slidably disposed on the base 4 along a first direction, and the positioning assembly 2 is fixedly disposed on the first sliding table 5. Height measuring device still includes footing 9, base 4 sets up on footing 9, footing 9 plays the effect of fixed stay to the device on base 4 and the base 4, the spout has been seted up on the base 4, first slip table 5 slides and sets up in the spout, fix locating component 2 on first slip table 5, through removing first slip table 5, can realize locating component 2 in the removal of first direction, realize the regulation of work piece 7 on the first direction, in this embodiment, the first direction is parallel with the direction of spout. In other embodiments, according to requirements, a sliding groove perpendicular to the first direction is formed in the first sliding table 5, a corresponding sliding seat is arranged on the sliding groove, and the positioning assembly 2 is arranged on the sliding seat, so that the workpiece 7 can move in the first direction and perpendicular to the first direction in the horizontal plane, and the position of the workpiece 7 can be adjusted conveniently.

Further, as shown in fig. 3, the height measuring device provided by the present embodiment further includes a driving assembly 3, and the driving assembly 3 is configured to drive the measuring assembly 1 to move between the measuring position and the position to be measured along the vertical direction. The driving assembly 3 includes a driver 31 and a connecting assembly 32, the connecting assembly 32 includes a connecting member 321 connected to the sleeve 14, a second sliding table 322 disposed on the connecting member 321, and a sliding rail 323 slidably engaged with the second sliding table 322, the height measuring apparatus further includes a back plate 6, the sliding rail 323 is disposed on the back plate 6 and extends along a vertical direction, the driver 31 is fixed on the back plate 6, and the driver 31 is connected to the second sliding table 322. In this embodiment, the height measuring device further includes a base 4, the backboard 6 is vertically arranged on the base 4, and a rib plate is fixedly connected between the backboard 6 and the base 4 to fix and reinforce the backboard 6. An operation table 8 is provided on the base 4.

Further, as shown in fig. 3, the driving assembly 3 further includes a first proximity switch 33 and a second proximity switch 34 that are disposed on the back plate 6 at intervals, and the first proximity switch 33 and the second proximity switch 34 are used for detecting the position of the second sliding table 322. Specifically, the second sliding table 322 is provided with a detection piece, and when the measurement assembly 1 is located at a position to be measured, the first proximity switch 33 is matched with the detection piece; the second proximity switch 34 cooperates with the detection member when the measuring assembly 1 is in the measuring position. The first proximity switch 33 and the second proximity switch 34 are both photosensors.

Specifically, the connecting piece 321 includes a first hoop 3211 and a second hoop 3212, the first hoop 3211 is fixedly connected to the second sliding table 322, the second hoop 3212 is connected to the first hoop 3211 through bolts, and the first hoop 3211 and the second hoop 3212 are clamped to the sleeve 14, so that the measurement assembly 1 moves in the vertical direction.

Further, as shown in fig. 2 and 4, the positioning assembly 2 includes a positioning plate 21, a connecting seat 22, an equal-height block 23 and a floating assembly 24, the positioning plate 21 is provided with a through hole, the workpiece 7 is inserted into the through hole, the workpiece 7 can abut against the upper surface of the positioning plate 21 and partially extend out of the through hole, specifically, the positioning plate 21 includes a positioning sleeve connecting plate 211 and a positioning sleeve 212, and the positioning sleeve connecting plate 211 is fixed to the equal-height block 23; the locating sleeve 212 is detachably connected to the locating sleeve connecting plate 211, the through hole is formed in the locating sleeve 212, the workpiece 7 is placed in the through hole in the locating sleeve 212, the upper portion of the workpiece 7 is abutted to the upper surface of the locating sleeve 212, one portion of the lower portion of the workpiece 7 extends out of the through hole in the locating sleeve 212, the locating sleeve 212 is in a stepped shape, and the stepped surface of the locating sleeve 212 is abutted to the upper surface of the locating sleeve connecting plate 211. In this embodiment, the positioning sleeve 212 is fixed to the positioning sleeve connection plate 211 by screws. The connecting seats 22 are arranged below the positioning plate 21 at intervals; the two ends of the equal-height block 23 are respectively connected with the positioning plate 21 and the connecting seat 22, in this embodiment, the equal-height block 23 is respectively fixed on the positioning plate 21 and the connecting seat 22 through screws, and three equal-height blocks 23 are respectively uniformly distributed on the periphery of the workpiece 7 to fixedly connect the connecting seat 22 and the positioning plate 21. The floating assembly 24 includes a floating pin 241 and a spring 242, the floating pin 241 is slidably disposed in the connecting seat 22, and the spring 242 can drive the floating pin 241 to slide relative to the connecting seat 22, so that the floating pin 241 abuts against the workpiece 7.

Further, as shown in fig. 2 and 4, the floating pin 241 includes a floating rod 2411, an alloy ball 2412 and a protection ring 2413, the floating rod 2411 is slidably disposed in the connection seat 22, and the spring 242 can drive the floating rod 2411 to slide in the connection seat 22; alloy ball 2412 is arranged at the top end of floating ejector rod 2411, and alloy ball 2412 can be abutted against workpiece 7; protection ring 2413 is sleeved on floating ejector 2411 and limits alloy ball 2412 to the top end of floating ejector 2411. In this embodiment, the connecting seat 22 is fixed to the first sliding table 5 by screws, the first sliding table 5 is provided with a screw plug 51, the screw plug 51 is fixed to the first sliding table 5, the screw plug 51 abuts against the spring 242, one end of the spring 242 is fixed in a limiting manner by the screw plug 51, the other end of the spring 242 abuts against the floating ejector rod 2411, and the alloy ball 2412 at the top end of the floating ejector rod 2411 is pushed by the elastic force of the spring 242 to abut against the workpiece 7, so that the workpiece 7 can be elastically fixed in the process of detecting the workpiece 7, and when the alloy ball 2412 abuts against the workpiece 7, the workpiece 7 can abut against the sleeve 14. In this embodiment, alloy ball 2412 may be configured as a gimbal floating ball.

Further, as shown in fig. 2 and 4, the positioning assembly 2 further includes a limit pin 25, a limit groove is formed in the outer peripheral surface of the floating ejector rod 2411, the limit groove extends in the vertical direction, and one end of the limit pin 25 is inserted into the limit groove. The limit pin 25 is provided so that the floating rod 2411 can move only a limited distance in the connecting seat 22.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. A height measuring device, comprising:

the positioning component (2) is used for fixing a workpiece (7), and the workpiece (7) is provided with a reference surface and a surface to be measured which are arranged at intervals;

the measuring assembly (1) comprises a displacement sensor (11) and a sleeve (14) fixedly connected with the displacement sensor (11), wherein the displacement sensor (11) is provided with a measuring head (13) capable of moving relative to the sleeve (14);

the measuring component (1) can move relative to the positioning component (2) and has a measuring position and a position to be measured, when the measuring component (1) is located at the position to be measured, the measuring head (13) is separated from the surface to be measured, the sleeve (14) is separated from the reference surface, and the measuring head (13) is in a natural extension state; when the measuring assembly (1) is located at the measuring position, the measuring head (13) is abutted to the surface to be measured, the sleeve (14) is abutted to the reference surface, and the measuring head (13) is in a compressed state.

2. The height measuring device according to claim 1, further comprising a base (4) and a first sliding table (5) slidably disposed on the base (4) along a first direction, wherein the positioning assembly (2) is fixedly disposed on the first sliding table (5).

3. Height measuring device according to claim 1, further comprising a drive assembly (3), the drive assembly (3) being adapted to drive the measuring assembly (1) in a vertical direction between the measuring position and the position to be measured.

4. The height measuring device according to claim 3, wherein the driving assembly (3) comprises a driver (31) and a connecting assembly (32), the connecting assembly (32) comprises a connecting piece (321) connected with the sleeve (14), a second sliding table (322) arranged on the connecting piece (321), and a sliding rail (323) in sliding fit with the second sliding table (322); height measurement device still includes backplate (6), slide rail (323) set up in backplate (6) just extend along vertical direction, driver (31) are fixed in on backplate (6) just driver (31) with second slip table (322) are connected.

5. The height measuring device of claim 4, wherein the connector (321) comprises a first anchor ear (3211) and a second anchor ear (3212), the first anchor ear (3211) is fixedly connected to the second sliding table (322), the second anchor ear (3212) is connected to the first anchor ear (3211) by bolts, and the first anchor ear (3211) and the second anchor ear (3212) are clamped to the sleeve (14).

6. The height measuring device according to claim 4, wherein the driving assembly (3) further comprises a first proximity switch (33) and a second proximity switch (34) which are arranged on the back plate (6) at intervals, and the first proximity switch (33) and the second proximity switch (34) are used for detecting the position of the second sliding table (322).

7. The height measuring device according to claim 1, wherein the positioning assembly (2) comprises a positioning plate (21), a through hole is formed in the positioning plate (21), the workpiece (7) penetrates through the through hole, and the workpiece (7) can abut against the upper surface of the positioning plate (21) and partially extend out of the through hole;

the connecting seats (22), the connecting seats (22) are arranged below the positioning plate (21) at intervals;

the two ends of the equal-height block (23) are respectively connected with the positioning plate (21) and the connecting seat (22);

the floating assembly (24) comprises a floating pin (241) and a spring (242), the floating pin (241) is arranged in the connecting seat (22) in a sliding mode, and the spring (242) can drive the floating pin (241) to slide relative to the connecting seat (22) so that the floating pin (241) abuts against the workpiece (7).

8. The height measuring device according to claim 7, wherein the positioning plate (21) comprises:

the positioning sleeve connecting plate (211), the positioning sleeve connecting plate (211) is fixed on the equal-height block (23);

the positioning sleeve (212), the positioning sleeve (212) can be dismantled connect in the positioning sleeve connecting plate (211), just the through-hole is located the positioning sleeve (212).

9. The height measuring device according to claim 7, wherein the floating pin (241) comprises:

the floating ejector rod (2411), the floating ejector rod (2411) is arranged in the connecting seat (22) in a sliding manner, and the spring (242) can drive the floating ejector rod (2411) to slide in the connecting seat (22);

the alloy ball (2412) is arranged at the top end of the floating ejector rod (2411), and the alloy ball (2412) can be abutted against the workpiece (7);

the protection ring (2413) is sleeved on the floating ejector rod (2411) and limits the alloy ball (2412) to the top end of the floating ejector rod (2411).

10. The height measuring device according to claim 9, wherein the positioning assembly (2) further comprises a limit pin (25), a limit groove is formed in the outer peripheral surface of the floating ejector rod (2411), the limit groove extends in the vertical direction, and one end of the limit pin (25) is inserted into the limit groove.