CN217930145U - Roughness measuring device and three-coordinate measuring machine - Google Patents

Abstract

The utility model provides a roughness measuring device and a three-coordinate measuring machine, wherein the roughness measuring device comprises a measuring pin holder and a roughness measuring pin component, and the measuring pin holder is provided with an electric connection terminal; the roughness measuring pin assembly comprises a roughness measuring pin module, a first electric rotating mechanism and a second electric rotating mechanism, wherein the first electric rotating mechanism is connected to the measuring pin holder, the second electric rotating mechanism is connected to the rotation output end of the first electric rotating mechanism, and the roughness measuring pin module is connected to the rotation output end of the second electric rotating mechanism. The utility model discloses roughness measurement device is integrated on three-coordinate measuring machine, can realize the automatic of roughness and measure, has improved work piece measurement of efficiency.

Description

Roughness measuring device and three-coordinate measuring machine

Technical Field

The utility model relates to a measure technical field, specifically be a roughness measurement device and three-coordinate measuring machine.

Background

With the rapid development of modern industry and the gradual maturity of industrial automation, enterprises are no longer limited to only improving the efficiency in the aspect of manufacturing and processing, but have higher efficiency requirements on the efficiency of each process, and detection is used as an important link for monitoring manufacturing and processing, and the speed of the efficiency directly influences the production efficiency. The roughness detection is an important ring in the detection link, and directly influences the sealing property, the lubricating property, the wear resistance and the like among the workpieces, and further directly influences the surface quality of the workpieces.

Currently, roughness is measured mainly by three methods: one is the traditional hand-held type, namely a roughness meter is manually held to detect the characteristics of a workpiece to be detected, and the method has the defects of low efficiency, large subjective factor and excessive dependence on the skill level of an operator; the other type is a semi-automatic type, the tool is customized through the characteristics of the workpiece to be measured, compared with the first type, the efficiency can be improved, the measurement is too single, the flexibility is poor, once the workpiece is replaced, the existing tool is difficult to continue to use, and waste is caused; the last one is a full-automatic type roughness meter, which can improve the roughness efficiency, but has high cost, large occupied space, low equipment utilization rate, and can only measure the roughness, but can not measure the dimensions such as other conventional form and position tolerances and the like.

Therefore, the roughness measurement device is urgently needed to be provided, the automatic measurement of roughness can be realized by matching with automatic measurement equipment such as three coordinates, the roughness measurement efficiency is improved, meanwhile, the roughness measurement device is easy to disassemble, the three-coordinate measuring machine can also normally install other measuring pins, the conventional form and position tolerance measurement of the three-coordinate measuring machine is completed, the utilization rate of the equipment is improved, and the equipment cost is favorably reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a roughness measurement device and three-coordinate measuring machine can solve among the prior art roughness measurement inefficiency, the poor problem of flexibility.

In order to solve the technical problem, the roughness measuring device provided by the utility model adopts the technical scheme that the roughness measuring device comprises a measuring pin holder and a roughness measuring pin assembly, wherein the measuring pin holder is provided with an electric connection terminal; roughness survey needle subassembly includes roughness survey needle module, drive roughness survey needle module level pivoted first electronic slewing mechanism and drive roughness survey needle module vertical pivoted second electronic slewing mechanism, first electronic slewing mechanism connect in the survey needle holder, the electronic slewing mechanism of second is connected on first electronic slewing mechanism's the rotation output, roughness survey needle module is connected on the electronic slewing mechanism's of second rotation output, first electronic slewing mechanism the electronic slewing mechanism of second and roughness survey needle module all with connect the electrical terminal conductive connection.

The first electric rotating mechanism comprises a first motor and a rotating part, a motor shaft of the first motor is vertically arranged downwards, the first motor is connected with the measuring needle holder, the rotating part is connected with the motor shaft of the first motor so as to rotate around the motor shaft of the first motor under the driving of the first motor, and the rotating output end of the first electric rotating mechanism is the bottom end of the rotating part; the second electric rotating mechanism comprises a second motor and a shell, the second motor is installed in the shell, a motor shaft is horizontally arranged, the shell is connected to the bottom end of the rotating part, and the rotating output end of the second electric rotating mechanism is connected with the motor shaft of the second motor.

The lower surface of the measuring pin holder is provided with a connecting seat, the first motor is connected to the connecting seat, and the rotating part is vertically arranged in a cylindrical shape.

And the roughness measuring pin module is connected with a motor shaft of the second motor through a gear set.

The rotation range of the first electric rotating mechanism is-180 degrees, the rotation division is 0.1 degree, the rotation range of the second electric rotating mechanism is-95 degrees, and the rotation division is 0.1 degree.

And a first indicator light is arranged on the roughness measuring device and used for displaying the power-on state of the roughness measuring device.

And a second indicator light is arranged on the roughness measuring pin module and used for displaying the measuring state of the roughness measuring pin module.

The utility model also provides a three-coordinate measuring machine, including host computer and electrical system, the host computer includes the frame and establishes X axle, Y axle and Z axle on the frame, the end-to-end connection of Z axle has the survey seat, and three-coordinate measuring machine still includes foretell roughness measurement device, the survey pin holder with survey the seat absorption formula and can dismantle the connection, survey be equipped with on the seat with connect electrical terminal complex power supply terminal.

The upper surface of the measuring needle holder is provided with a first adsorption positioning structure, the measuring base is correspondingly provided with a second adsorption positioning structure, and the first adsorption positioning structure and the second adsorption positioning structure are matched to position the measuring needle holder.

The measuring seat is a fixed measuring seat.

Compared with the prior art, the utility model has the advantages of it is following and positive effect:

1. the utility model discloses roughness measurement device, including stylus holder and roughness stylus subassembly, can integrate the utility model discloses roughness measurement device on three-coordinate measuring machine through the stylus holder, utilize the triaxial motion function of measuring machine, combine the rotary motion of roughness stylus subassembly, can realize the automatic measurement of roughness, improved work piece measurement efficiency;

2. the three-coordinate measuring machine has a three-axis movement function, and the roughness measuring pin assembly can horizontally and vertically rotate under the driving of the first electric rotating mechanism and the second electric rotating mechanism, so that the measuring flexibility is high, repeated investment is not needed, the investment can be greatly saved, and the measuring cost is reduced;

3. the utility model discloses roughness measurement device passes through the holder absorption formula and can dismantle to be connected in the measuring machine and survey the seat, changes the measuring stylus after the dismantlement and makes the measuring machine still can carry out the geometric tolerances size measurement of ordinary work piece, and the measurement of roughness has improved the utilization ratio of measuring machine.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a perspective view of a three-coordinate measuring machine according to an embodiment of the present invention;

fig. 2 is a perspective view of the roughness measuring device in the embodiment of the present invention;

FIG. 3 is a schematic view of the internal structure of the rotating part of the roughness measuring device in the embodiment of the present invention;

FIG. 4 is a perspective view of the clamp holder in the embodiment of the present invention;

fig. 5 is a perspective view of the probe module according to the embodiment of the present invention.

Reference numerals are as follows: 100-a host; 110-a frame; 120-X axis; 130-Y axis; 140-Z axis; 150-measuring seat; 200-roughness measuring device; 210-stylus holder; 211-electrical connection terminals; 212-a first adsorption positioning structure; 213-a hanging part; 214-a connecting seat; 220-roughness probe module; 221-a second indicator light; 222-a housing; 223-measuring needle protective sleeve; 224-support columns; 225-roughness measuring probe; 226-a guide slot; 230-a first electric rotating mechanism; 231-a first motor; 232. a rotating member; 240-a second electric rotating mechanism; 241-a second motor; 242-a housing; 243-gear set; 250-a first indicator light; 260-a slip ring; 261-a rotor; 262-a stator; 263-first connecting cable; 264-electrical contacts; 270-a second powered cable; 280-cylindrical connection.

Detailed Description

In the description of the present invention, it should 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; 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 as a specific case by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, the three-coordinate measuring machine of the present embodiment, a main machine 100 and an electrical system, the main machine 100 includes a frame 110, and an X axis 120, a Y axis 130 and a Z axis 140 which are arranged on the frame, a measuring base 150 is connected to a terminal of the Z axis 140, and certainly, the three-coordinate measuring machine also includes conventional structural components of the three-coordinate measuring machine, such as a measuring head system of the three-coordinate measuring machine, which are not described herein again.

Referring to fig. 1 to 3, unlike the prior art, the coordinate measuring machine of the present embodiment further includes a roughness measuring device 200, where the roughness measuring device 200 includes a stylus holder 210 and a roughness stylus assembly, and the stylus holder 210 is provided with an electrical connection terminal 211; the roughness measuring pin assembly comprises a roughness measuring pin module 220, a first electric rotating mechanism 230 for driving the roughness measuring pin module 220 to horizontally rotate and a second electric rotating mechanism 240 for driving the roughness measuring pin module 220 to vertically rotate, the first electric rotating mechanism 230 is connected to a measuring pin holder 210, the second electric rotating mechanism 240 is connected to the rotating output end of the first electric rotating mechanism 230, the roughness measuring pin module 220 is connected to the rotating output end of the second electric rotating mechanism 240, and the first electric rotating mechanism 230, the second electric rotating mechanism 240 and the roughness measuring pin module 220 are electrically connected with an electric connection terminal 211. The stylus holder 210 is detachably connected to the test socket 150 in an adsorption manner, and the test socket 150 is provided with a power supply terminal (not shown) engaged with the electric connection terminal 211.

Specifically, the stylus holder 210 has a structure substantially similar to that of a stylus holder configured in an existing three-coordinate measuring machine, and is in a disc shape, and is detachably connected to the measuring base 150 in an adsorption manner by using a vacuum chuck of the existing three-coordinate measuring machine, and the measuring base 150 is provided with a suction nozzle and connected to a vacuum device, so that the stylus holder 210 is adsorbed to the measuring base 150, and the roughness measuring device 200 is integrally and detachably connected to the measuring base 150. Meanwhile, the electrical connection terminal 211 of the stylus holder 210 is matched with the power supply terminal of the test socket 150, so as to energize the roughness measurement apparatus 200, and thus the first electric rotating mechanism 230, the second electric rotating mechanism 240 and the stylus driving mechanism of the roughness stylus module 220 themselves can work normally. The measurement data obtained by the roughness probe module 220 is transmitted in a wireless transmission mode.

In order to improve the absorption connection efficiency and connection reliability between the stylus holder 210 and the test base 150, as shown in fig. 4, in this embodiment, a first absorption positioning structure 212 is disposed on the upper surface of the stylus holder 210, a second absorption positioning structure is correspondingly disposed on the test base 150, and the first absorption positioning structure and the second absorption positioning structure cooperate to position the stylus holder 210. In this embodiment, the first adsorption positioning structure 212 is a positioning column with a ceramic positioning ball at the top end, the second adsorption positioning structure is a ball socket, and the positioning ball and the ball socket are matched to realize self-adaptive adsorption positioning, so as to further improve the connection efficiency. The material of the positioning ball of the first adsorption positioning structure 212 is preferably ceramic, and the ceramic material has small deformation under the influence of temperature, so that the positioning reliability can be ensured.

Further, the upper surface of the stylus holder 210 is further provided with a hanging part 212, the hanging part 212 protrudes upwards from the upper surface of the stylus holder 210, the bottom of the measuring seat 150 is correspondingly provided with a hook, when the stylus holder 210 is connected with the measuring seat 150 in an adsorption manner, except the first adsorption positioning structure 212 and the second adsorption positioning structure in a matching manner, the hanging part 212 is also hung on the hook of the measuring seat 150, so that the stylus holder 210 is prevented from being adsorbed and falling due to gas path reasons, and the reliability of the device is improved.

Since the roughness measurement probe module 220 itself has a driving mechanism for driving the probe to move for roughness measurement in this embodiment, and meanwhile, the roughness measurement apparatus 200 further includes a first electric rotating mechanism 230 and a second electric rotating mechanism 240 for driving the roughness measurement probe module 220 to rotate integrally, the overall weight of the roughness measurement apparatus 200 in this embodiment is heavier than that of other probes of the existing three-coordinate measuring machine, and the measurement base 150 in this embodiment is preferably a fixed measurement base. The fixed measuring seat has larger bearing weight than the rotary measuring seat, and the reliability of the adsorption connection between the roughness measuring device 200 and the measuring seat 150 can be effectively ensured.

For the roughness measuring pin module 220, referring to fig. 5, it includes a housing 222, a horizontal strip-shaped measuring pin protecting cover 223 fixed on one side of the housing 222, a supporting pillar 224 fixed at the front end of the measuring pin protecting cover 223, and a roughness measuring pin 225 located inside the measuring pin protecting cover 223, a driving mechanism of the roughness measuring pin 225 is arranged inside the housing 222, not shown in the figure, the driving mechanism is connected with the roughness measuring pin 225 through a measuring pin rod, the roughness measuring pin 225 is made of diamond material and has a diameter of 2 μm, a measuring pin assembly composed of the roughness measuring pin 225 and the driving mechanism thereof is the prior art, and the measuring principle of the roughness measuring pin 225 is the prior art and is not described herein. The shell 222 is made of carbon fiber, so that the weight of the roughness measuring pin module 220 can be reduced to the maximum extent, and the bearing capacity of the measuring seat 150 is met; the stylus protection sleeve 222 is a one-step processing and forming structure and is provided with a guide groove 226 which penetrates through the bottom of the stylus protection sleeve and is parallel to the length direction of the stylus protection sleeve, a stylus rod is arranged horizontally and is parallel to the extension direction of the stylus protection sleeve 222, the rear end of the stylus rod is connected with a driving mechanism, the front end of the stylus rod is connected with a roughness stylus 225, the roughness stylus 225 is arranged vertically, the measuring end of the stylus rod is exposed out of the bottom of the stylus protection sleeve 223 through the guide groove 226, the stylus protection sleeve 223 and the guide groove 226 of the stylus protection sleeve 223 can better guarantee the parallelism of the stylus rod, and meanwhile, the stylus protection sleeve and the stylus rod are protected.

The supporting column 224 is perpendicular to the measuring needle protecting sleeve 222, namely, is vertically arranged, is specifically an M2 stud, is fixed through threads, and is mainly used for supporting, the horizontal plane of the bottom end of the supporting column 224 contacts with the surface of a workpiece firstly during measurement, so that the supporting and positioning effects are achieved, the control is achieved through a sensor on a measuring machine, and after the sensor of the measuring machine receives a trigger signal, the roughness measuring needle 225 is driven by a driving mechanism to measure. In this embodiment, the distance h from the supporting post 224 to the upper surface of the stylus protection sleeve 222 is 10mm, so that the roughness of a hole with a diameter of more than 10mm can be measured, and the roughness of a surface can also be measured.

In the embodiment, the roughness measuring device is integrated on a three-coordinate measuring machine, and a coordinate system is provided for roughness measurement by utilizing the three-axis motion function of the measuring machine, so that the automatic measurement of roughness can be realized, and the workpiece measuring efficiency is improved; the three-coordinate measuring machine has a three-axis movement function, the roughness measuring pin module can horizontally and vertically rotate under the driving of the first electric rotating mechanism and the second electric rotating mechanism, so that the roughness measuring pin module can rotate at any spatial angle, the measurement of different spatial positions is realized, the flexibility is strong, the repeated investment is not needed, the investment can be greatly saved, and the measurement cost is reduced; the roughness measuring device is detachably connected to the measuring base of the measuring machine in an adsorption mode through the clamping device, the measuring needle is replaced after the roughness measuring device is detached, so that the measuring machine can still measure the form and position tolerance size of a common workpiece, the roughness measuring device improves the utilization rate of the measuring machine, the problem of back and forth carrying of workpieces caused by different stations in the form and position tolerance measuring and the roughness measuring is avoided, and the measuring efficiency of the workpieces is further improved.

Further, as shown in fig. 2 and 3, in the present embodiment, the first electric rotating mechanism 230 includes a first motor 231 and a rotating member 232, a motor shaft of the first motor 231 is disposed vertically downward, the first motor 231 is connected to the stylus holder 210, the rotating member 232 is connected to the motor shaft of the first motor 231 to rotate around the motor shaft thereof under the driving of the first motor 231, and a rotating output end of the first electric rotating mechanism 230 is a bottom end of the rotating member 232; the second electric rotating mechanism 240 comprises a second motor 241 and a shell 242, the second motor 241 is installed in the shell 242, the shell 242 is connected to the bottom end of the rotating part 232, a motor shaft of the second motor 241 is horizontally arranged, the rotating output end of the second electric rotating mechanism 240 is the motor shaft of the second motor 241, and the roughness measuring pin module 220 is connected to the motor shaft of the second motor 241 through the top end of the shell 222. The first motor 231 operates to drive the rotating member 232 to rotate around the vertical motor shaft thereof, so as to drive the roughness probe module 220 to horizontally rotate around the vertical axis, and the rotating direction is shown by an arrow i in fig. 2; the second motor 241 works to drive the roughness probe module 220 to vertically rotate around the horizontal axis, and the rotation direction is shown by an arrow ii in fig. 2.

Further, the roughness probe module 220 may be directly connected to the motor shaft of the second motor 241 or indirectly connected to the motor shaft of the second motor 241 through a transmission mechanism. In this embodiment, a gear set 243 is connected to the motor shaft of the second motor 241, the roughness measuring probe module 220 is specifically connected to the motor shaft of the second motor 241 through the gear set 243, and a driven gear of the gear set 243 has a central shaft which extends out of the housing 242 so as to be connected with the roughness measuring probe module 220 outside the housing 242.

As also shown in fig. 2 and 3, the stylus holder 210 is provided with a coupling base 214 on a lower surface thereof, the first motor 231 is mounted on the coupling base 214 through a cylindrical coupling portion 280, and the first motor 231 is fixedly mounted inside the cylindrical coupling portion 280. The rotating part 232 is vertically arranged in a cylindrical shape, is coaxially arranged with the cylindrical connecting part 280 and is positioned below the cylindrical connecting part, and can be connected to a motor shaft of the first motor 231 through a horizontal connecting plate, so that when the first motor 231 works, the rotating part 232 can stably rotate around the vertical axis of the motor shaft, and the rotation operation of the roughness measuring pin module 220 is reliable.

In order to further reduce the weight of the roughness measuring device 200, in this embodiment, the rotating part 232 and the housing 242 are made of carbon fiber material, the electrical terminal 211 of the stylus holder 210 is directly connected with the first motor 231 through a cable, and the second motor 241 is electrified through the slip ring 260. Specifically, the slip ring 260 includes a stator 262 and a rotor 261 electrically connected by an electrical contact 264, the rotor 261 is mounted inside the rotating member 232, the stator 262 is mounted on the housing of the first motor 231, a first electrical cable 263 on the stator 262 is connected to the electrical terminal 211 of the pin holder 210, and the electrical terminal on the rotor 261 is connected to the second motor 241 through a second electrical cable 270, so that the second motor 241 is powered through the electrical terminal 211 of the pin holder 210 and the slip ring 260. Reduce cable length and avoided the cable to rotate the winding through setting up sliding ring 260, sliding ring 260 itself is small, light in weight simultaneously, is favorable to reducing roughness measurement device 200's volume, reduces its weight, satisfies the bearing requirement of base 150. Because the second motor 241 only drives the roughness probe module 220 to rotate, the volume and the weight of the roughness probe module 220 are smaller, and the second motor 241 only needs to be a micro motor. In addition, the electrical terminals of the first motor 231 are directly connected to the electrical terminals 211 of the needle holder 210, and power is supplied from the electrical terminals 211 of the needle holder 210.

Specifically, the rotation range of the first electric rotating mechanism 230 is-180 ° to 180 °, the rotation division is 0.1 °, the rotation range of the second electric rotating mechanism 240 is-95 ° to 95 °, and the rotation division is 0.1 °.

Further, a first indicator lamp 250 is further disposed on the roughness measuring device 200 for displaying the power-on state of the roughness measuring device 200. The lamp has 3 display states: the light-off, yellow and blue represent different states, wherein the light-off represents that the roughness probe module 220 is not electrified and needs to check whether the circuit is interrupted; yellow represents that the circuit is normal when the power is on; blue indicates that the roughness stylus module 220 is transmitting wirelessly normally and can perform roughness measurements.

The roughness measuring pin module 220 is provided with a second indicator lamp 221 for displaying the measuring state of the roughness measuring pin module 220.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. A roughness measurement device, characterized by: the roughness measuring pin comprises a measuring pin holder and a roughness measuring pin assembly, wherein the measuring pin holder is provided with an electric connection terminal; roughness survey needle subassembly includes roughness survey needle module, drive roughness survey needle module level pivoted first electronic slewing mechanism and drive roughness survey needle module vertical pivoted second electronic slewing mechanism, first electronic slewing mechanism connect in the survey needle holder, the electronic slewing mechanism of second is connected on first electronic slewing mechanism's the rotation output, roughness survey needle module is connected on the electronic slewing mechanism's of second rotation output, first electronic slewing mechanism the electronic slewing mechanism of second and roughness survey needle module all with connect the electrical terminal conductive connection.

2. The roughness measurement device of claim 1, wherein: the first electric rotating mechanism comprises a first motor and a rotating part, a motor shaft of the first motor is vertically arranged downwards, the first motor is connected to the stylus holder, the rotating part is connected with the motor shaft of the first motor so as to rotate around the motor shaft of the first motor under the driving of the first motor, and the rotating output end of the first electric rotating mechanism is the bottom end of the rotating part; the second electric rotating mechanism comprises a second motor and a shell, the second motor is installed in the shell, a motor shaft is horizontally arranged, the shell is connected to the bottom end of the rotating part, and the rotating output end of the second electric rotating mechanism is the motor shaft of the second motor.

3. The roughness measurement device of claim 2, wherein: the lower surface of the measuring pin holder is provided with a connecting seat, the first motor is connected to the connecting seat, and the rotating part is vertically arranged in a cylindrical shape.

4. The roughness measurement device of claim 3, wherein: and the roughness measuring pin module is connected with a motor shaft of the second motor through a gear set.

5. The roughness measurement device of claim 1, wherein: the rotation range of the first electric rotating mechanism is-180 degrees, the rotation division is 0.1 degree, the rotation range of the second electric rotating mechanism is-95 degrees, and the rotation division is 0.1 degree.

6. The roughness measurement device of claim 1, wherein: and the roughness measuring device is provided with a first indicator light for displaying the power-on state of the roughness measuring device.

7. The roughness measurement device of claim 1, wherein: and a second indicator lamp is arranged on the roughness measuring pin module and used for displaying the measuring state of the roughness measuring pin module.

8. The utility model provides a three-coordinate measuring machine, includes host computer and electrical system, the host computer includes the frame and establishes X axle, Y axle and Z axle on the frame, the end-to-end connection of Z axle has the survey seat, a serial communication port, three-coordinate measuring machine is still including any one of claims 1 to 7 roughness measurement device, survey the needle holder with survey the seat absorption formula and can dismantle the connection, survey be equipped with on the seat with connect electric terminal complex power supply terminal.

9. The coordinate measuring machine of claim 8, wherein: the upper surface of the measuring needle holder is provided with a first adsorption positioning structure, the measuring base is correspondingly provided with a second adsorption positioning structure, and the first adsorption positioning structure and the second adsorption positioning structure are matched to position the measuring needle holder.

10. The coordinate measuring machine of claim 8,

the measuring seat is a fixed measuring seat.

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