CN217541870U

CN217541870U - Thread pitch diameter measuring device

Info

Publication number: CN217541870U
Application number: CN202221383306.6U
Authority: CN
Inventors: 赵昱
Original assignee: Zhuhai Rongtai Precision Die Casting Co ltd
Current assignee: Zhuhai Rongtai Precision Die Casting Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-10-04
Anticipated expiration: 2032-06-02

Abstract

The utility model discloses a solve the comparatively loaded down with trivial details problem of diameter value measurement mode in the product that exists in the measurement field, a screw thread pitch diameter measuring device is provided, the device includes measuring mechanism, product standard ring and measuring head, measuring mechanism includes the shell, drive assembly, measuring unit and display screen all set up in the shell, drive assembly and measuring unit connect, measuring unit and display screen electricity are connected, be provided with standard internal thread on the inside wall of product standard ring, the measuring head includes main part and measuring part, the main part can be dismantled and connect on the shell, measuring part sets up on the lateral wall of main part, measuring part and main part sliding connection, be provided with the measurement external screw thread on the lateral wall of measuring part, measuring part and drive assembly transmission are connected. The utility model discloses a screw thread pitch diameter measuring device can measure fast simply and reachs the internal screw thread pitch diameter value of product.

Description

Thread pitch diameter measuring device

Technical Field

The utility model relates to a measuring instrument, in particular to screw thread pitch diameter measuring device.

Background

The method comprises the following steps of firstly measuring a major diameter value D of an internal thread to be measured by a measuring mechanism and then calculating the major diameter value D by a formula (D2 = D-Px0.6495, P is a thread pitch) to obtain a middle diameter value of the internal thread to be measured of an existing product to be measured, wherein the measured and calculated middle diameter value is inaccurate due to measurement errors; therefore, the measuring mechanism needs to be calibrated firstly, namely the measuring mechanism is used for measuring the internal thread of the calibration ring, and then the measuring mechanism is calibrated through the calibration component on the measuring mechanism, so that the major diameter value (displayed on the display screen) measured by the measuring mechanism is the same as the standard value on the calibration ring; and after the measuring mechanism is calibrated, measuring the major diameter value D of the internal thread to be measured, and calculating by a formula to obtain the minor diameter value. Even if the same measuring component is used for a plurality of times or is placed for a long time, the value of the measuring error is changed greatly, so that the measuring error value of a certain measurement is directly recorded, and a measuring method of adding and subtracting the measuring error value in the subsequent measurement is not feasible. Therefore, the measurement method of the pitch diameter value of the internal thread to be measured of the existing product to be measured is more complicated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a screw thread pitch diameter measuring device can measure the pitch diameter value that reachs the product internal thread fast simply.

According to the utility model discloses a screw thread pitch diameter measuring device, including measuring mechanism, product standard ring and measuring head, measuring mechanism includes shell, drive assembly, measuring component and display screen all set up in the shell, drive assembly with measuring component connects, measuring component with the display screen electricity is connected, be provided with standard internal thread on the inside wall of product standard ring, the measuring head includes main part and measuring part, the main part can be dismantled the connection and be in on the shell, measuring part sets up on the lateral wall of main part, measuring part with main part sliding connection, be provided with on the lateral wall of measuring part and measure the external screw thread, measuring part with drive assembly transmission is connected, drive assembly is used for driving measuring part follows the radial outside slip of main part makes measure the external screw thread butt standard internal thread.

According to the utility model discloses diameter measurement device in screw thread has following beneficial effect at least: be provided with product standard ring, can measure the pitch diameter value that reachs the product internal thread fast simply.

According to some embodiments of the utility model, the measuring head still includes protective sleeve, protective sleeve cover is established on the main part, protective sleeve with main part sliding connection.

According to some embodiments of the invention, the measuring head further comprises an elastic member, one end of the elastic member is connected to the housing, the other end of the elastic member is connected to the protective sleeve, and the elastic member is used for making the protective sleeve be kept away from the housing.

According to some embodiments of the present invention, the elastic member is one of a spring, an elastic plastic member, and an elastic sheet.

According to some embodiments of the present invention, the measuring assembly comprises a processor and a sensor, the processor and the sensor are all disposed in the housing, the processor and the display screen, the sensor is electrically connected, the sensor and the transmission assembly are connected.

According to some embodiments of the present invention, the product standard ring is marked with a standard pitch diameter value.

According to some embodiments of the utility model, still include set screw, the main part is provided with fixing hole, set screw passes fixing hole with shell threaded connection.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of an overall assembly of a measuring head of an embodiment of the present invention when the measuring head is ready to measure a standard ring of a product;

fig. 2 is a schematic view of the overall assembly of the measuring head for measuring the standard ring of the product according to the embodiment of the present invention;

FIG. 3 is a bottom view of the measuring head of FIG. 2 measuring a standard ring of a product;

fig. 4 is a schematic front view of the measuring mechanism and the measuring head according to the embodiment of the present invention after being assembled.

Reference numerals are as follows:

measuring mechanism 100, housing 110, transmission assembly 120, trigger 121, display screen 130;

a product standard ring 200, a standard internal thread 210;

a measuring head 300, a body part 310, a sliding groove 311, a measuring part 320, a measuring external thread 321, a protective sleeve 330, an elastic member 340;

the screw 400 is fixed.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the directions or positional relationships referred to in the description of the directions, such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "tip", "inner", "outer", "axial", "radial", "circumferential", etc., are the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention. In the description of the present invention, the side wall means the left side wall and/or the right side wall.

In the description of the present invention, "a plurality" means two or more, "more than", "less than", "more than" and the like are understood as excluding the number, "more than", "below", "within" and the like are understood as including the number. If the description of "first" and "second" is used for the purpose of distinguishing technical features, the description is not intended to indicate or imply relative importance or to implicitly indicate the number of the indicated technical features or to implicitly indicate the precedence of the indicated technical features.

In the description of the present invention, it is to be understood that "a is provided on B" and "a is provided on B" express a connection relationship or a positional relationship between a and B, and do not mean that a is necessarily above B.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, a movable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "bolted" and "screwed" are equally interchangeable. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

Referring to fig. 1 to 4, the thread pitch diameter measuring device according to the embodiment of the present invention is used for measuring the pitch diameter value of the internal thread to be measured of the product to be measured, including a measuring mechanism 100, a product standard ring 200 and a measuring head 300, the measuring mechanism 100 includes a housing 110, a transmission component 120, a measuring component and a display screen 130, the transmission component 120, the measuring component and the display screen 130 are all disposed in the housing 110, the transmission component 120 is connected with the measuring component, the measuring component is electrically connected with the display screen 130, the internal wall of the product standard ring 200 is provided with a standard internal thread 210, the measuring head 300 includes a main body portion 310 and a measuring portion 320, the main body portion 310 is detachably connected to the housing 110, the measuring portion 320 is disposed on the side wall of the main body portion 310, the measuring portion 320 is slidably connected with the main body portion 310, the outer side wall of the measuring portion 320 is provided with a measuring external thread 321, the measuring portion 320 is drivingly connected with the transmission component 120, the transmission component 120 is used for driving the measuring portion 320 to slide outwards along the radial direction of the main body portion 310, thereby making the measuring external thread 321 standard abutting against the internal thread 210.

It should be understood that there are various ways in which the transmission assembly 120 can drive the measuring portion 320 to slide, such as may be provided with reference to a manual three-jaw chuck, a self-centering three-jaw chuck, etc. The measuring assembly generally includes a processor and a sensor, both disposed within the housing 110, the processor electrically connected to the display screen 130 and the sensor, the sensor electrically connected to the driving assembly 120, the sensor for measuring the driving assembly 120.

The standard internal thread 210 of the product standard ring 200 is the same as the internal thread to be made (or designed) on the product; it is to be understood that different sized holes on the product may have different standard internal threads 210 (or different sized product standard rings 200). It should be understood that a product standard ring 200 is correspondingly identified with a corresponding standard caliper value D2'. The gauge internal thread 210 is used to abut the gauge external thread 321.

The main body 310 is substantially cylindrical, the measuring portion 320 is substantially block-shaped, and the measuring external thread 321 provided on the outer sidewall of the measuring portion 320 is an incomplete external thread, but a certain truncated segment of the complete external thread. It should be understood that the side wall of the main body 310 is provided with a sliding groove 311 extending along the radial direction thereof, and the measuring part 320 is located in the sliding groove 311. It should be understood that different measuring portions 320 (different thread pitches of the measuring external threads 321) may be required for measuring different specifications of products to be measured, so that the measuring head 300 can be replaced to measure different specifications of products, and therefore the main body 310 and the housing 110 can be detachably connected (in this embodiment, screwed). It should be understood that the measuring external thread 321 of the measuring portion 320, the standard internal thread 210 of the product standard ring 200, and the internal thread to be measured of the hole to be measured of the product to be measured have the same thread form (or are corresponding to each other) and the same thread pitch; therefore, the measuring male screw 321 can abut against the standard female screw 210 and the female screw to be measured (a screwing-like state is achieved).

In actual use, the measuring head 300 is inserted into the ring of the product standard ring 200, and the trigger 121 part of the transmission assembly 120 (extending from the housing 110) is pulled, so that the measuring part 320 is driven to slide outwards along the radial direction of the main body part 310, and finally the measuring external thread 321 abuts against the standard internal thread 210; then, the measuring component obtains (converts and calculates the above numerical values through the processor) the major diameter value D 'of the standard internal thread 210 through the change of the transmission component 120 (such as the numerical values of the moving distance, the rotating angle, and the like of a certain component), and the measuring component transmits the major diameter value D' to the display screen 130 for displaying; then, the measuring head 300 is stretched into the hole to be measured of the product to be measured, and the large diameter value D of the hole to be measured is obtained again by referring to the steps; finally, by comparing the sizes of D' and D, the fact that the actually manufactured hole of the product is larger or smaller than the hole to be manufactured can be intuitively known; and then, calculating to obtain the actual diameter value D2 of the product, wherein the specific calculation process is as follows:

D2-D2' = (D-P × 0.6495) - (D ' -P ' × 0.6495); because the internal thread of the hole to be measured corresponds to the standard internal thread 210 of the product standard ring 200, the thread pitches are equal, and P = P'; so finally D2= D2'+ (D-D') can be obtained.

Therefore, by using the thread pitch diameter measuring device of the utility model, the measurement is faster and simpler, the measurement is carried out after the original calibration, and only two times of measurement needs to be carried out continuously; and the measurement process is simpler and quicker than the calibration process (the calibration process needs fine adjustment, and wastes time and labor). And the original calculation process after measurement is complex, multiplication calculation of multiple decimal numbers is needed, direct mental calculation cannot be generally carried out to obtain a result, and at present, only addition and subtraction calculation is needed, so that a calculation result can be quickly obtained even without other tools (calculators), and workers can conveniently and timely judge whether the hole to be measured of the product is qualified or not.

Referring to fig. 1 to 4, in some embodiments of the present invention, the measuring head 300 further comprises a protection sleeve 330, the protection sleeve 330 is sleeved on the main body portion 310, and the protection sleeve 330 is slidably connected to the main body portion 310.

The protection sleeve 330 is arranged, when the measuring head 300 is not used, the protection sleeve 330 is slid down, so that the measuring part 320 is positioned in the protection sleeve 330, thereby achieving the protection effect, preventing external objects from touching the measuring part 320, influencing the measuring result, enlarging the measuring error and even damaging the measuring part 320; when the measuring head 300 is used, the protective sleeve 330 is slid up (close to the housing 110) to expose the measuring portion 320, so that the measuring operation can be performed normally.

Referring to fig. 1 to 4, in some embodiments of the present invention, the measuring head 300 further comprises a spring, one end of the spring is connected to the housing 110, and the other end of the spring is connected to the protecting sleeve 330, and the spring is used for keeping the protecting sleeve 330 away from the housing 110.

The elastic member 340 (spring) is provided to make the protection sleeve 330 automatically slide down when not in use, thereby automatically protecting.

Referring to fig. 1-4, in some embodiments of the present invention, a product standard ring 200 has a standard caliper value identified thereon.

The standard intermediate diameter value is arranged on the product standard ring 200, so that the method is more visual and convenient, and the intermediate diameter value can be conveniently measured and calculated.

Referring to fig. 1 to 4, in some embodiments of the present invention, a fixing screw 400 is further included, the main body portion 310 is provided with a fixing through hole, and the fixing screw 400 is screwed to the housing 110 through the fixing through hole.

The main body 310 (the measuring head 300) is fixed to the housing 110 by a fixing screw 400. The screw fixation is very simple and convenient, and the measuring head 300 is convenient to disassemble and replace.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A thread pitch diameter measuring device, comprising:

the measuring mechanism comprises a shell, a transmission assembly, a measuring assembly and a display screen, wherein the transmission assembly, the measuring assembly and the display screen are all arranged in the shell, the transmission assembly is connected with the measuring assembly, and the measuring assembly is electrically connected with the display screen;

the inner side wall of the product standard ring is provided with a standard internal thread;

the measuring head comprises a main body part and a measuring part, wherein the main body part is detachably connected to the shell, the measuring part is arranged on the side wall of the main body part, the measuring part is in sliding connection with the main body part, measuring external threads are arranged on the outer side wall of the measuring part, the measuring part is in transmission connection with a transmission assembly, the transmission assembly is used for driving the measuring part to slide outwards in the radial direction of the main body part, and therefore the measuring external threads are abutted to the standard internal threads.

2. The thread pitch diameter measuring device of claim 1, wherein the measuring head further comprises a protective sleeve, the protective sleeve is sleeved on the main body part, and the protective sleeve is slidably connected with the main body part.

3. The thread pitch diameter measuring device of claim 2, wherein the measuring head further comprises an elastic member, one end of the elastic member is connected to the housing, the other end of the elastic member is connected to the protective sleeve, and the elastic member is used for keeping the protective sleeve away from the housing.

4. The thread pitch diameter measuring device of claim 3, wherein the elastic member is one of a spring, an elastic plastic member, and an elastic piece.

5. The thread pitch diameter measuring device of claim 1 wherein said measuring assembly comprises a processor and a sensor, said processor and said sensor both disposed within said housing, said processor electrically connected to said display screen and said sensor, said sensor connected to said drive assembly.

6. The thread pitch diameter measuring device of claim 1, wherein a standard pitch diameter value is identified on the product standard ring.

7. The thread pitch diameter measuring device of claim 1, further comprising a fixing screw, wherein the main body portion is provided with a fixing through hole, and the fixing screw is screwed with the housing through the fixing through hole.