CN211084984U

CN211084984U - Dial indicator calibrating device

Info

Publication number: CN211084984U
Application number: CN201922177695.1U
Authority: CN
Inventors: 向友刚
Original assignee: Guangzhou Zhongce Testing Technology Co ltd
Current assignee: Guangzhou Zhongce Testing Technology Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-07-24
Anticipated expiration: 2029-12-06

Abstract

The utility model provides a dial indicator calibrating device, including base, activity cushion cap and benchmark measuring tool, be provided with the guide rail on the base, the guide rail is followed the long direction setting of base, just the guide rail with the base is fixed mutually, activity cushion cap with guide rail sliding connection, just the activity cushion cap can follow the length direction reciprocating motion of guide rail, the benchmark measuring tool is fixed in the one end relative with the activity cushion cap on the base, be provided with the drive arrangement who is used for driving the activity cushion cap to remove on the base for the other end of benchmark measuring tool, still be provided with anchor clamps on the activity cushion cap, anchor clamps are used for the fixed dial indicator that waits to calibrate of centre gripping, the benchmark measuring tool is the micrometer; the dial indicator calibrating device has the advantages of reasonable structure, simplicity in use and high detection efficiency.

Description

Dial indicator calibrating device

Technical Field

The utility model belongs to the technical field of the measurement, concretely relates to percentage table calibrating device.

Background

The dial gauge was made in 1890 years by b.c. emms in the united states. Are often used for length measurements of shape and position errors and small displacements. The dial plate of the dial indicator is printed with 100 equal division scales, namely each division value is equivalent to the movement of the measuring rod by 0.01 mm. If 1000 equal divisions are printed on the circular dial, each division value is 0.001 mm, and the measuring tool is called a dial indicator. The shape of the measuring head is changed and matched with a corresponding support, and deformation varieties of dial indicators, such as a thickness dial indicator, a depth dial indicator and an inner diameter dial indicator, can be manufactured. If the lever is used to replace rack, a lever dial indicator and a lever dial indicator can be made, and the indication range is small, but the sensitivity is high. In addition, the measuring heads can rotate in a certain angle, and the measuring head can adapt to measurement in different directions and has a compact structure. They are suitable for measuring the shape and position errors of excircle, small hole and groove, etc. which are difficult to measure by common dial indicator. The dial indicator or the dial indicator needs to be correspondingly calibrated before leaving a factory, after maintenance or after being used for a period of time so as to ensure the corresponding precision of the indicator; such as by using a gauge to detect errors in the representation of the calibration dial indicator. The indication value error means that the dial indicator detects every 10 divisions in the positive and negative stroke directions, reads each corresponding error value on the dial indicator, and continuously compresses the measuring rod to enable the pointer to rotate 10 divisions after the end point; returning to zero position, then detecting reversely, the direction of the measuring rod cannot be changed midway, the dial indicator does not make any adjustment, and the positive sign and the negative sign of the reverse stroke error are determined to be the same as those of the positive stroke. The indication error of any 1mm is obtained by the difference between the errors of any two adjacent points in the positive stroke. Measuring Instruments (Measuring Instruments) refer to 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 equipped with 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. In the prior art, a dialgage is generally calibrated in a manner of checking the dialgage, but the dialgage is known to have relatively high sensitivity and is easily interfered when being used as a reference part, and repeated checking is often needed for ensuring the detection accuracy, so that the use convenience and the detection efficiency are reduced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a rational in infrastructure, simple to use make things convenient for percentage table calibrating device that detection efficiency is high.

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

the utility model provides a percentage table calibrating device, includes the base, activity cushion cap and benchmark measuring tool, be provided with the guide rail on the base, the guide rail is followed the long direction setting of base, just the guide rail with the base is fixed mutually, the activity cushion cap with guide rail sliding connection, just the activity cushion cap can be followed the length direction reciprocating motion of guide rail, the benchmark measuring tool is fixed in the one end relative with the activity cushion cap on the base, be provided with the drive arrangement who is used for driving the removal of activity cushion cap for the other end of benchmark measuring tool on the base, still be provided with anchor clamps on the activity cushion cap, anchor clamps are used for the fixed percentage table of treating the calibration of centre gripping, the benchmark measuring tool is the micrometer.

Preferably, the driving device comprises a screw rod and a hand wheel, one end of the screw rod is rotatably connected with the base, the end part of the screw rod is fixedly connected with the hand wheel, the other end of the screw rod extends to the reference measuring tool, and the screw rod penetrates through the movable bearing platform and is screwed with the movable bearing platform;

or the driving device comprises a first motor and a screw rod, the motor is in transmission connection with the screw rod, the first motor is fixedly connected with the base, and the screw rod penetrates through the movable bearing platform and is screwed with the movable bearing platform.

Preferably, the screw rod and the guide rail are parallel to each other.

Preferably, the number of the guide rails is two, the guide rails are arranged at intervals, and the guide rails are respectively located on two sides of the screw rod.

Preferably, the clamp comprises a screw, a handle and two clamping blocks, the screw is rotatably connected with the movable bearing platform, the two clamping blocks are oppositely arranged and screwed with the screw, the handle is fixedly connected with the screw, and the two clamping blocks are simultaneously and oppositely close to or far away from each other when the screw is rotated.

Preferably, the screw has a positive thread extending from a center point in a longitudinal direction thereof to one end thereof, the screw has a negative thread extending from the center point in the longitudinal direction thereof to the other end thereof, and the positive thread and the negative thread are screwed to one of the blocks.

Preferably, the movable bearing platform is provided with a sliding groove, and the clamping block is in sliding connection with the sliding groove.

Preferably, the screw rod is located in the sliding groove, and the screw rod is perpendicular to the guide rail.

Preferably, the reference measuring tool is a single-rod micrometer, and a micrometer screw of the single-rod micrometer corresponds to the movable bearing platform.

Preferably, the measuring device further comprises a second driving device, the second driving device comprises a sliding rail, a sliding block, a second motor and a camera, the sliding block is connected with the sliding rail in a sliding mode, the sliding rail is fixedly connected with the base, the second motor is fixed on the sliding block and is in transmission connection with the reference measuring tool, the camera is fixedly connected with the sliding block, and the camera corresponds to a reading area of the reference measuring tool.

The beneficial effects of the utility model are mainly embodied in that: the driving device drives the movable bearing platform to move so as to drive the dial indicator to be detected clamped and fixed on the movable bearing platform to move, so that a measuring head of the dial indicator is abutted against the reference measuring tool (abutted against the measuring end face of the micrometer), then linear motion of the measuring end face of the micrometer is formed by rotating a micro-cylinder of the micrometer and acts on the measuring head of the dial indicator, so that the moving distance of a spiral micrometer rod of the micrometer is directly fed back through the dial indicator, and a corresponding error value is detected, namely, corresponding detection and calibration are completed; therefore, the detection process of the calibrating device is simplified, the stability of the linear motion of the micrometer is relatively high, the micrometer is used as a reference measuring tool and is not easy to interfere, the detection times can be reduced, and the detection efficiency of the calibrating device is 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 view of a top view structure of a dial indicator calibrating device according to the present invention;

FIG. 2 is a schematic diagram of a side view of the dial indicator calibrating device according to the present invention;

fig. 3 is a schematic view of a using state of the dialgage calibrating device of the present invention;

fig. 4 is a schematic structural diagram of another embodiment of the device for calibrating a dial indicator according to the present invention.

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. 1-4, this embodiment provides a dial indicator calibrating device, which includes a base 1, a movable platform 2 and a reference measuring tool 3, wherein a guide rail 4 is disposed on the base 1, and the guide rail 4 is disposed along a length direction of the base 1, in this embodiment, the base 1 is disposed in a U shape, two ends of the guide rail 4 and two ends of the base 1 are fixed to each other, the movable platform 2 is slidably connected to the guide rail 4, that is, the movable platform 2 can reciprocate along the length direction of the guide rail 4, the reference measuring tool 3 is fixed to an end of the base 1 opposite to the movable platform 2, a driving device for driving the movable platform 2 to move is disposed on the other end of the base 1 opposite to the reference measuring tool 3, a clamp 5 is further disposed on the movable platform 2, the clamp 5 is used for clamping and fixing a dial indicator to be calibrated, and the reference measuring tool 3 is a. The screw 6 and the guide rail 4 are parallel to each other. In this embodiment, the two guide rails 4 are arranged, the guide rails 4 are arranged at intervals, the guide rails 4 are respectively arranged on two sides of the screw rod 6, and the two guide rails are arranged to further reduce abrasion in the using process and improve the stability after positioning. When the micrometer is used for detection, the driving device drives the movable bearing platform 2 to move, and then the dial indicator to be detected clamped and fixed on the movable bearing platform 2 is driven to move, so that the measuring head of the micrometer is abutted against the reference measuring tool 3 (the measuring head of the micrometer), then the micro-cylinder of the micrometer is rotated to form linear motion of the measuring head of the micrometer, and the linear motion acts on the measuring head of the dial indicator 17, so that the moving distance of the measuring head (a spiral micro-rod) of the micrometer is directly fed back through the dial indicator; for example, the micrometer can correspondingly obtain the feedback of the 1MM value on the dial indicator 17 corresponding to the distance of 1MM, and then the error value of the detection can be known through comparison, namely, the corresponding detection calibration is completed; because the stability of the linear motion of micrometer is higher relatively, and the micrometer directly measures percentage table 17, for current calibration mode, like application number 201821499136.1's patent, avoided the detection error volume that need move V type piece along the V-arrangement guide rail and increase among the calibration process, use the micrometer to be difficult for receiving the interference as benchmark measuring tool 3 simultaneously, and then can reduce the detection number of times, improved calibrating device's detection efficiency promptly.

As shown in fig. 1-4, in a preferred embodiment, the driving device comprises a screw rod 6 and a hand wheel 7, one end of the screw rod 6 is rotatably connected with the base 1 through a bearing, and the end part of the screw rod 6 is fixedly connected with the hand wheel 7, the other end of the screw rod 6 extends to the reference measuring tool 3, and the screw rod 6 penetrates through the movable bearing platform 2 and is screwed with the movable bearing platform; namely, the movable bearing platform 2 is provided with internal threads matched with the screw rods 6. The hand wheel 7 is rotated to drive the screw rod 6 to rotate, and the external thread on the surface of the screw rod is matched with the internal thread of the movable bearing platform 2 to form the linear motion of the movable bearing platform 2 on the guide rail 4.

As shown in fig. 1-3, in a preferred embodiment, the clamp 5 includes a screw 9, a handle 10 and two clamping blocks 11, the screw 9 is rotatably connected with the movable supporting platform 2, the two clamping blocks 11 are oppositely arranged and screwed with the screw 9, the handle 10 is fixedly connected with the end of the screw 9, and the two clamping blocks 11 are simultaneously and oppositely close to or far away from each other when the screw 9 is rotated. The screw 9 is provided with a positive thread extending from a central point in the length direction thereof to one end thereof, the screw 9 is provided with a negative thread extending from a central point in the length direction thereof to the other end thereof, and the positive thread and the negative thread are respectively screwed with one clamping block 11. The setting of forward and reverse screw thread is mutually supported with two clamp blocks 11 respectively and can be realized the simultaneous movement of clamp block 11, is from centering promptly to help its measuring head of percentage table 17 to correspond each other with the micrometer measuring head in horizontal position after movable cushion cap 2 is fixed, improve the convenience that percentage table calibrating device used. The movable bearing platform 2 is provided with a sliding chute 12, and the clamping block 11 is in sliding connection with the sliding chute 12 of the movable bearing platform 2; the screw 9 is positioned in the sliding groove 12, so that the smoothness of the surface of the movable bearing platform 2 is improved, and the convenience of the clamp 5 in use is reduced. The screw 9 is perpendicular to the guide rail 4. The reference measuring tool 3 is a single-rod micrometer, and a micrometer screw, namely a measuring head, of the single-rod micrometer corresponds to the movable bearing platform 2.

Second embodiment

In a preferred embodiment, as shown in fig. 4, the driving device comprises a first motor 8 and a screw rod 6, a driving shaft of the motor 8 is in transmission connection with the screw rod 6, the first motor 8 is fixedly connected with the base 1, the screw rod 6 penetrates through the movable bearing platform 2 and is screwed with the movable bearing platform, and the first motor 8 can be a stepping motor.

As shown in fig. 4, in a preferred embodiment, the measuring device further includes a second driving device, the second driving device includes a slide rail 13, a slider 14, a second motor 15, and a camera 16, the slider 14 is slidably connected to the slide rail 13, the slide rail 13 is fixedly connected to the base 1 through a bolt, the second motor 15 is fixed to the slider 14, the second motor 15 is in transmission connection with the reference gauge 3, that is, with a micro-drum of a micrometer, the camera 16 is fixedly connected to the slider 14, and the camera 16 corresponds to a reading area of the reference gauge 3. The second motor 15 is a stepping motor or a servo motor, and the micro-drum of the micrometer moves relative to the micrometer body in a threaded manner, so that the second motor 15 also needs to move synchronously with the micro-drum, namely the motor needs to be fixed on the slide block 14; while movement of the slide 14 also moves the camera head 16 to facilitate reading from the micrometer. In this embodiment, the detection and calibration process of the calibration device of the dial indicator 17 can be automated by adding a stepping motor and a camera and cooperating with each other.

The beneficial effects of the utility model are mainly embodied in that: the driving device drives the movable bearing platform to move so as to drive the dial indicator to be detected clamped and fixed on the movable bearing platform to move, so that the measuring head of the dial indicator is abutted against the reference measuring tool (abutted against the measuring head of the micrometer), then the micro-cylinder of the micrometer is rotated to form linear motion of the measuring end surface of the micrometer and act on the measuring head of the dial indicator, so that the moving distance of the spiral micrometer rod of the micrometer is directly fed back through the dial indicator, and a corresponding error value is detected, namely, corresponding detection calibration is completed; therefore, the detection process of the calibrating device is simplified, the stability of the linear motion of the micrometer is relatively high, the micrometer is used as a reference measuring tool and is not easy to interfere, the detection times can be reduced, and the detection efficiency of the calibrating device is improved.

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. A percentage table calibrating device which characterized in that: including the base, activity cushion cap and benchmark measuring tool, be provided with the guide rail on the base, the guide rail is followed the long direction of base sets up, just the guide rail with the base is fixed mutually, the activity cushion cap with guide rail sliding connection, just the activity cushion cap can be followed the length direction reciprocating motion of guide rail, the benchmark measuring tool is fixed in the one end relative with the activity cushion cap on the base, be provided with the drive arrangement who is used for driving the activity cushion cap removal for the other end of benchmark measuring tool on the base, still be provided with anchor clamps on the activity cushion cap, anchor clamps are used for the fixed percentage table of treating the calibration of centre gripping, the benchmark measuring tool is the micrometer.

2. The dial indicator calibration device according to claim 1, wherein: the driving device comprises a screw rod and a hand wheel, one end of the screw rod is rotatably connected with the base, the end part of the screw rod is fixedly connected with the hand wheel, the other end of the screw rod extends to the reference measuring tool, and the screw rod penetrates through the movable bearing platform and is screwed with the movable bearing platform;

3. A dial gauge calibration device according to claim 2, wherein: the screw rod is parallel to the guide rail.

4. The dial indicator calibration device according to claim 1, wherein: the guide rail is provided with two, the guide rail interval sets up, just the guide rail is located the both sides of lead screw respectively.

5. The dial indicator calibration device according to claim 1, wherein: the clamp comprises a screw rod, a handle and two clamping blocks, the screw rod is rotatably connected with the movable bearing platform, the two clamping blocks are oppositely arranged and screwed with the screw rod, the handle is fixedly connected with the screw rod, and the two clamping blocks are simultaneously and oppositely close to or far away from each other when the screw rod is rotated.

6. The dial indicator calibration device according to claim 5, wherein: the screw rod is provided with a positive thread extending from the central point of the screw rod in the length direction as a starting point to one end of the screw rod, the screw rod is provided with a negative thread extending from the central point of the screw rod in the length direction as a starting point to the other end of the screw rod, and the positive thread and the negative thread are respectively screwed with one clamping block.

7. The dial indicator calibration device according to claim 5, wherein: the movable bearing platform is provided with a sliding groove, and the clamping block is connected with the sliding groove in a sliding mode.

8. The dial indicator calibration device according to claim 7, wherein: the screw rod is located in the sliding groove, and the screw rod is perpendicular to the guide rail.

9. The dial indicator calibration device according to claim 1, wherein: the reference measuring tool is a single-rod micrometer, and a micrometer screw of the single-rod micrometer corresponds to the movable bearing platform.

10. The dial indicator calibration device according to claim 1, wherein: the second driving device comprises a sliding rail, a sliding block, a second motor and a camera, the sliding block is connected with the sliding rail in a sliding mode, the sliding rail is fixedly connected with the base, the second motor is fixed on the sliding block, the second motor is in transmission connection with the reference measuring tool, the camera is fixedly connected with the sliding block, and the camera corresponds to a reading area of the reference measuring tool.