CN210664189U

CN210664189U - Clamping mechanism for micrometer detection

Info

Publication number: CN210664189U
Application number: CN201922119048.5U
Authority: CN
Inventors: 向友刚
Original assignee: Guangzhou Zhongce Testing Technology Co Ltd
Current assignee: Guangzhou Zhongce Testing Technology Co Ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-06-02
Anticipated expiration: 2029-11-28

Abstract

The utility model provides a fixture for micrometer detection, including support and two chuck assemblies of arranging on the support, two chuck assemblies are located same axial lead, two chuck assemblies are used for respectively centre gripping micrometer's fine adjustment swing arm and coarse adjustment swing arm, chuck assembly includes chuck, drive arrangement and roating seat, the roating seat with support fixed connection, drive arrangement with the chuck is connected, and drive arrangement with the roating seat transmission is connected and drive the chuck rotates along the axial lead of roating seat, the chuck is hollow chuck; the clamping mechanism for micrometer detection has the advantages of reasonable structure, convenience in use and capability of improving the detection efficiency of a measuring instrument.

Description

Clamping mechanism for micrometer detection

Technical Field

The utility model belongs to the technical field of the measurement, concretely relates to a fixture for micrometer detects.

Background

Micrometer (micrometer), also known as micrometer screw, micrometer, is a tool for measuring length more precisely than vernier caliper, and can measure length to 0.01mm accurately, and the measuring range is several centimeters. A part of the screw is processed into a thread with the thread pitch of 0.5mm, when the screw rotates in a thread sleeve of a fixed sleeve B, the screw advances or retreats, a movable sleeve C and a screw rod are connected into a whole, and the periphery of the screw is equally divided into 50 grids. The whole circle number of the screw rod rotation is measured by the scribed lines on the fixed sleeve at intervals of 0.5mm, the part less than one circle is measured by the scribed lines on the periphery of the movable sleeve, and the final measurement result needs to be estimated and read by one decimal. The micrometer needs to be detected by a measuring instrument before leaving a factory or regularly used in daily use so as to ensure the use precision of the micrometer. The Measuring Instruments (Measuring Instruments) are main tools for performing verification or calibration, and generally refer to Measuring devices (such as taximeter verification devices, high-frequency microwave power meter calibration devices, and the like) which can be used alone or together with auxiliary equipment to directly or indirectly measure the quantity of a measured object, Instruments and meters (such as a heart/electroencephalograph, a pressure gauge, a flow meter, and the like), sensors (sensors provided for various Measuring devices or Instruments and meters, various sensors for independent input/output, Measuring sensors or Measuring probes in a negative feedback closed-loop control loop formed in various equipment, and the like), Measuring tools (such as Measuring blocks, weights, and the like), standard substances (such as carbon monoxide gas standard substances and ultraviolet light region transmittance standard filters) for unifying the quantity, calipers, and the like. According to the regulations of the national "metrological act" and the related regulations on metrological instruments, before use or during their valid certification period or calibration time interval, they must be "certified" or "calibrated" by a qualified metrological agency according to the regulations of the corresponding certification regulations or calibration standards. It is known that a micrometer is provided with two adjusting knobs, namely a fine adjusting knob (force measuring knob) and a coarse adjusting knob, and when the micrometer is detected, the fine adjusting knob and the coarse adjusting knob need to be adjusted respectively and the micrometer is finally detected; however, the positions and sizes of the coarse turning knob and the fine turning knob of the thousand micrometers are different, so that in the prior art, a clamping mechanism of a metering device is often manually operated by a worker to clamp and fix one of the knobs of the micrometer to finish corresponding measurement, and then the other knob is clamped and fixed to finish corresponding measurement; the clamping mechanism operated manually brings certain inconvenience to the measuring instrument when in use, and is not beneficial to improving the detection efficiency of the measuring instrument.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a reasonable in structure, convenient to use, and can improve micrometer detection fixture of measurement utensil detection efficiency.

In order to solve the technical problem, the utility model discloses the technical scheme who uses is:

the utility model provides a fixture for micrometer detects, includes the support and arranges two chuck assemblies on the support, two chuck assemblies are located same axis, two chuck assemblies are used for the fine adjustment swing stem and the coarse adjustment swing stem of centre gripping micrometer respectively, chuck assembly includes chuck, drive arrangement and roating seat, the roating seat with support fixed connection, drive arrangement with the chuck is connected, just drive arrangement with the roating seat transmission is connected and is driven the chuck is followed the axial lead of roating seat rotates, the chuck is hollow chuck.

Preferably, the driving device comprises a support, a plurality of rollers and a driving motor, the rollers are arranged around the outer wall of the rotating seat and are rotatably connected with the support, the driving motor is in transmission connection with any one of the rollers and is fixedly connected with the support, and the chuck is fixedly connected with the support.

Preferably, the driving device comprises a support, a plurality of rollers and a driving motor, the rollers are annularly arranged on the inner wall of the rotating seat, the rollers are rotatably connected with the support, the driving motor is in transmission connection with any one of the rollers, the motor is fixedly connected with the support, and the chuck is fixedly connected with the support.

Preferably, the driving device comprises a support, a plurality of rollers and a driving motor, the rollers are arranged on the outer wall and the inner wall of the rotating seat in a surrounding mode, the rollers are rotatably connected with the support, the driving motor is in transmission connection with any one of the rollers, the motor is fixedly connected with the support, and the chuck is fixedly connected with the support.

Preferably, the rollers at the inner wall and the outer wall correspond to each other two by two.

Preferably, the outer wall and/or the inner wall of the rotary seat are/is provided with a track groove in a ring shape, and the track groove is matched with the roller.

Preferably, the track groove is a tooth groove, and the roller is a gear, the gear and the tooth groove being engaged with each other.

Preferably, the power supply device further comprises a power supply assembly, wherein the power supply assembly comprises a conducting ring, an electric brush and an electric brush frame, the conducting ring is sleeved and fixed on the outer wall of the rotating seat, the electric brush frame is fixed with the motor or the support, the electric brush is fixed with the electric brush frame, and the electric brush is connected with the conducting ring in a sliding mode.

Preferably, the driving motor is a reduction motor.

Preferably, the distance between the rotating seat and the end face of the support is greater than the diameter of the roller.

The beneficial effects of the utility model are mainly embodied in that: because two chuck assemblies positioned on the same axial lead are respectively arranged, a fine adjustment rotary handle and a coarse adjustment rotary handle at the end part of the micrometer to be detected can be simultaneously fixed with the chucks of the two chuck assemblies, and then the fine adjustment rotary handle or the coarse adjustment rotary handle can respectively enable the chucks to rotate around the rotary seat under the driving of the driving devices respectively matched with the chucks to finish corresponding detection; the problem that in a traditional mode, one knob in a micrometer is clamped firstly and detection is completed, and then the other knob is manually replaced and clamped is avoided, so that convenience in detection of the micrometer by the metering device and detection efficiency can be improved.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic front view of a clamping mechanism for micrometer detection according to the present invention;

FIG. 2 is the utility model discloses a fixture look sideways at schematic diagram for micrometer detects

Fig. 3 is a schematic view of a usage status of the micrometer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the illustrated embodiments are not intended to limit the present invention, and in the present embodiments, it is understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and only describe the present invention, 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 therefore should not be construed as limiting the present invention; in addition, in the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a bolt fixing manner, a welding fixing manner, a pin fixing manner, or the like, which is commonly used in the prior art, and therefore, detailed description thereof is omitted in this embodiment.

As shown in fig. 1-3, the present embodiment provides a clamping mechanism for micrometer detection, including a support 1 and two chuck assemblies 2 arranged on the support 1, where the two chuck assemblies 2 are located on the same axial line, and the two chuck assemblies 2 are spaced from each other, and the two chuck assemblies 2 are used for respectively clamping a fine adjustment rotary handle and a coarse adjustment rotary handle of a micrometer; the chuck assembly 2 comprises a chuck 21, a driving device 23 and a rotating base 22, the rotating base 22 is fixed with the support 1 through a support frame, in the embodiment, the support frame is fixed at the end part of the rotating base 22 in the axial direction, the driving device 23 is connected with the chuck 21, the driving device 23 is in transmission connection with the rotating base 22 and drives the chuck 21 to rotate along the axial lead of the rotating base 22, and the chuck 21 is a hollow chuck 21. The chuck 21 in this embodiment is a three-jaw chuck or a four-jaw chuck, and the specific structure thereof can be referred to in patent application nos. 201721391587.9 and 201720735401.0, so the detailed structure of the chuck 21 will not be described herein. The driving device 23 comprises a support 24, a plurality of rollers 25 and a driving motor 26, the plurality of rollers 25 are uniformly arranged around the outer wall of the rotating base 22 at intervals, when the rollers 25 are only arranged outside the rotating base 22, at least three rollers 25 are arranged, and the plurality of rollers 25 are rotatably connected with the support 24, so that the rollers 25 and the support are mutually matched to form a holding on the rotating base 22, and the support 24 is prevented from falling off from the rotating base 22; the driving motor 26 is in transmission connection with any one of the rollers 25, the motor is fixed with the bracket 24 through bolts, and the chuck 21 is fixed with the bracket 24 through bolts. When the driving motor 26 drives the roller 25 to rotate, the bracket 24 rotates relative to the rotary base 22, and further drives the chuck fixed on the bracket 24 to rotate. When the micrometer needs to be clamped and fixed, the two chuck plates positioned on the same axial lead respectively clamp a fine adjustment rotary handle and a coarse adjustment rotary handle on the micrometer, and then the fine adjustment rotary handle or the coarse adjustment rotary handle can respectively enable the chuck 21 to rotate around the rotary seat 22 under the driving of the driving device 23 which is respectively matched with each chuck 21 so as to finish corresponding detection; the problem that in a traditional mode, after a clamp clamps and fixes one knob (such as a fine adjustment knob) manually and fine adjustment detection of a micrometer is completed, the other knob is loosened and clamped and corresponding detection is carried out is avoided. When the roller 25 is located on the outer wall of the rotating base 22, the distance from the end surface of the rotating base 22 to the support 1 is larger than the diameter of the roller 25, so that the roller 25 has passability when moving along the outer wall of the rotating base.

In a preferred embodiment, the driving device 23 includes a bracket 24, a plurality of rollers 25 and a driving motor 26, the plurality of rollers 25 are annularly arranged along the inner wall of the rotating base 22, the plurality of rollers 25 are rotatably connected with the bracket 24, the driving motor 26 is in transmission connection with any one of the rollers 25, the motor is fixedly connected with the bracket 24, and the chuck 21 is fixedly connected with the bracket 24. When the driving device 23 is arranged in the rotary seat 22, the clamping mechanism can be relatively concise as a whole; when the driving device 23 is disposed outside the rotary base 22 as described above, the routine maintenance of the clamping mechanism is facilitated.

As shown in fig. 1-2, in a preferred embodiment, the driving device 23 includes a bracket 24, a plurality of rollers 25 and a driving motor 26, the plurality of rollers 25 are disposed around the outer wall and the inner wall of the rotating base 22, the plurality of rollers 25 are rotatably connected to the bracket 24, the driving motor 26 is in driving connection with any one of the rollers 25, the motor is fixedly connected to the bracket 24, and the chuck 21 is fixedly connected to the bracket 24. The rollers 25 at the inner and outer walls correspond to each other two by two. When the rollers 25 are arranged on the inner wall and the outer wall, and the rollers 25 correspond to each other in pairs, a clamping force can be formed by the two rollers 25, so that the rotation gap or the rotation deviation of the driving device 23 relative to the rotating seat 22 is smaller, and the influence on the micrometer precision detection is further reduced.

In a preferred embodiment, the outer wall and/or the inner wall of the rotary base 22 is provided with a track groove that is matched with the roller 25, and the roller 25 can perform circular motion along the first track groove, so that the rotation error is reduced, and the roller 25 can be prevented from slipping off the rotary base 22. The track grooves are tooth grooves, and the rollers 25 are gears, which are engaged with the tooth grooves. When the gear is used as the roller, the phenomenon of slipping can be effectively avoided.

As shown in fig. 2, in a preferred embodiment, the power supply assembly further includes a conductive ring 3, a brush 4 and a brush holder 5, the conductive ring 3 is sleeved on and fixed on an outer wall of the rotating base 22, the brush holder 5 is fixed with the motor or the bracket 24, the brush 4 is fixed with the brush holder 5, and the brush 4 is slidably connected with the conductive ring 3. The drive motor 26 is a reduction motor. The two conducting rings 3 in this embodiment are respectively used for connecting the positive electrode and the negative electrode of the power supply, and the power supply is sent to the driving motor 26 through the conducting rings 3 via the brushes, so that the continuous power supply of the driving motor 26 is realized, and the rotation of the driving motor 26 fixed on the support 24 relative to the rotary base 22 along with the support 24 is not influenced. When the conducting ring 3 on any one of the two chuck assemblies 2 is powered on, the driving motor 26 can rotate and drive the chuck 21 to rotate, and the chuck 21 clamps the fine adjustment rotary handle or the coarse adjustment rotary handle on the micrometer, so that the flexible and convenient operation control of the clamping mechanism is realized.

The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a fixture for micrometer detects which characterized in that: including support and two chuck assemblies of range on the support, two chuck assemblies are located same axis, two chuck assemblies are used for the fine adjustment swing stem and the coarse adjustment swing stem of centre gripping micrometer respectively, chuck assembly includes chuck, drive arrangement and roating seat, the roating seat with support fixed connection, drive arrangement with the chuck is connected, just drive arrangement with the roating seat transmission is connected and is driven the chuck is followed the axial lead of roating seat rotates, the chuck is hollow chuck.

2. The clamping mechanism for micrometer detection as claimed in claim 1, wherein: the driving device comprises a support, a plurality of idler wheels and a driving motor, the plurality of idler wheels are arranged on the outer wall of the rotating seat in a surrounding mode, the plurality of idler wheels are connected with the support in a rotating mode, the driving motor is connected with any one of the idler wheels in a transmission mode, the motor is fixedly connected with the support, and the chuck is fixedly connected with the support.

3. The clamping mechanism for micrometer detection as claimed in claim 1, wherein: the driving device comprises a support, a plurality of idler wheels and a driving motor, the plurality of idler wheels are arranged on the inner wall of the rotating seat in a surrounding mode, the plurality of idler wheels are connected with the support in a rotating mode, the driving motor is connected with any one of the idler wheels in a transmission mode, the motor is fixedly connected with the support, and the chuck is fixedly connected with the support.

4. The clamping mechanism for micrometer detection as claimed in claim 1, wherein: drive arrangement includes support, a plurality of gyro wheels and driving motor, a plurality of gyro wheels are followed the outer wall and the inner wall ring of roating seat establish, just a plurality of gyro wheels rotate with the support and are connected, driving motor is connected with arbitrary gyro wheel transmission, just motor and support fixed connection, the chuck with support fixed connection.

5. The clamping mechanism for micrometer detection according to claim 4, wherein: the rollers positioned on the inner wall and the outer wall correspond to each other pairwise.

6. The clamping mechanism for micrometer detection according to any one of claims 2-5, wherein: and the outer wall and/or the inner wall of the rotating seat are/is provided with a track groove matched with the roller wheel.

7. The clamping mechanism for micrometer detection according to claim 6, wherein: the track groove is a tooth groove, the roller is a gear, and the gear is meshed with the tooth groove.

8. The clamping mechanism for micrometer detection as claimed in claim 1, wherein: still include the power supply subassembly, the power supply subassembly includes conducting ring, brush and brush yoke, the conducting ring cover is established and is fixed in on the outer wall of roating seat, the brush yoke is fixed with motor or support, the brush is fixed mutually with brush yoke, just the brush with conducting ring sliding connection.

9. The clamping mechanism for micrometer detection according to claim 3, wherein: the driving motor is a speed reducing motor.

10. The clamping mechanism for micrometer detection according to claim 2 or 4, wherein: the distance between the rotating seat and the end face of the support is larger than the diameter of the roller.