CN219200251U

CN219200251U - Go gauge detection device for large threads

Info

Publication number: CN219200251U
Application number: CN202223528382.4U
Authority: CN
Inventors: 黄剑辉; 郑镇坚
Original assignee: Dongguan Fourocean Machinery Tools Co ltd
Current assignee: Dongguan Fourocean Machinery Tools Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-16
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a go gauge detection device for large threads, which consists of a driving component and a detection component driven by the driving component to work, wherein the detection component consists of three parts, namely a mounting seat, a go gauge unit elastically clamped on the mounting seat and a unidirectional transmission unit arranged in the mounting seat and used for realizing connection and power transmission between the driving component and the go gauge unit; the unidirectional transmission unit comprises a hollow shaft body provided with a unidirectional face gear and a transmission piece sleeved on the hollow shaft body and propped against the unidirectional face gear through a pre-pressing spring, wherein the transmission piece is provided with two tooth surfaces, namely an outer tooth surface matched with the driving assembly and a unidirectional tooth surface propped against the unidirectional face gear, and unidirectional teeth on the unidirectional tooth surface are meshed with unidirectional teeth on the unidirectional face gear. The utility model is different from the existing small thread gauge detection structure, is fast to install, and is more suitable for the detection requirement of the large thread gauge.

Description

Go gauge detection device for large threads

Technical Field

The utility model relates to a screw hole detection device, in particular to a go gauge detection device with larger sliding resistance and suitable for detecting threads of large threads.

Background

For industrial automation, how to realize automatic detection is an important part of realizing automatic production. In the automatic detection of industrial products, the go gauge detection is a common detection device, and has the function of detecting whether a threaded hole is formed in the industrial products, and detecting whether the industrial products can normally pass through a standard go gauge or not, specifically, if the go gauge is not, the go gauge can not be screwed in smoothly, the pitch diameter of the threads in the threaded hole is large, and the products are unqualified.

In the current industry, the detection of the threaded hole mainly depends on a go gauge detector, which mainly comprises a go gauge and a driving mechanism for driving the go gauge to move upwards and rotate, and the go gauge in the driving mechanism cannot move upwards in place as a whole when the go gauge is not in place, and cannot trigger an inductive switch, so that the go gauge can be detected. In the structure, in order to prevent the clamping damage of the go gauge, the cooperation between the chuck and the base is realized through a unidirectional component pressed by a spring, when the torsion resistance is greater than the horizontal sliding resistance of the unidirectional component, the go gauge can spin to prevent the clamping damage, and meanwhile, the screw hole in the product is directly judged to be disqualified.

Based on the above structure and working principle, the conventional through gauge detection device has a certain defect when being applied to large-size thread detection, in particular, as can be seen from fig. 1, the conventional chuck moving block is a tap chuck and a matched base in the conventional tapping machine, because the tapping needs are different from the through gauge detection needs, the required functional structure is also different, the modification based on the original structure can be limited by the original structure, in particular, because the unidirectional component is arranged on the upper part, the available space of the spring is small, the pre-compression force is also small, the critical value of torsion sliding is low, when being applied to the small thread, because the appearance thread of the through gauge used by the small thread is small, the dimensional accuracy requirement is high, the shape error is small, and the use needs can be met, but the large thread has a small allowable error value, so that when being detected by the conventional through gauge detection device, even if the thread is in the fit range, the preset resistance value exceeds the preset resistance value in the unidirectional component, the practical situation can not be judged, and the practical situation can not exist.

On the basis of the defects, the general gauge detects that most of the components need to be matched with the die, the original structure is essentially suitable for small threads, the sizes of the components are small, the space problem is not considered in structural design, and when the general gauge is applied to large threads, the appearance of the machine is overlarge if the machine is adjusted according to the existing structural principle, so that the installation is not facilitated.

In summary, the existing go gauge detection device has obvious defects when being applied to large thread detection, and needs to be improved.

Disclosure of Invention

The utility model aims to overcome the defects existing in the prior art when detecting large threads based on the structure of a small thread gauge detection device, and provides a gauge detection device special for large threads, which not only can provide higher pre-pressing torque to meet the requirement on large thread detection, but also is easier to disassemble and assemble the gauge, and is convenient for later use and maintenance.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the detecting assembly consists of three parts of assemblies, namely a mounting seat, a go gauge unit elastically clamped on the mounting seat and a unidirectional transmission unit arranged in the mounting seat and used for realizing connection and power transmission between the driving assembly and the go gauge unit; the unidirectional transmission unit is composed of a hollow shaft body provided with a unidirectional face gear and a transmission piece sleeved on the hollow shaft body and propped against the unidirectional face gear through a pre-pressing spring, wherein the transmission piece is provided with two tooth surfaces, namely an outer tooth surface matched with a driving assembly and a unidirectional tooth surface propped against the unidirectional face gear, the unidirectional tooth on the unidirectional tooth surface is meshed with the unidirectional tooth on the unidirectional face gear, and the matching structure can enable the transmission piece to be driven to rotate unidirectionally by the driving assembly and prevent the hollow shaft body from being blocked upwards under the action of the driving assembly.

The through gauge detection device adopting the structure has the advantages that the transmission unit is independent, the spring installation space on the transmission unit is enough, the installation of the spring is more flexible, and higher axial pressure can be provided, so that the tooth surfaces meshed with each other can provide better working torque, and the through gauge detection requirement of large-size threads is met.

Further, the gauge unit is composed of a shell with a lead nut, a lead screw inserted into and penetrating through the lead nut, and a chuck arranged at the front end of the lead screw, wherein the chuck is used for clamping the gauge; the lead screw is matched with the hollow shaft body and synchronously acts with the hollow shaft body when the hollow shaft body rotates.

Furthermore, in order to realize the matching relationship of the elastic clamping between the go gauge unit and the mounting seat, the mounting seat is provided with a mounting opening matched with the go gauge unit, and a pressing plate which is opposite to the mounting opening and is provided with a spring is arranged in the mounting seat; the installation port on be equipped with two at least breach screens, be equipped with on the corresponding casing with breach screens complex latch, the latch on the casing passes through the breach screens and gets into in the mount pad and makes latch and breach screens dislocation after the casing is rotatory, in the above-mentioned structure with casing card solid in the mount pad under the top pressure of clamp plate, utilize latch, the clamp plate and the cooperation of breach screens of taking the spring to form a quick detach structure, make things convenient for general rule unit quick assembly disassembly. In the above structure, in order to fix the shell and the mounting seat with each other, a clamping groove matched with the clamping tongue is further arranged in the mounting opening, and when the clamping tongue enters the mounting opening from the notch clamping position and rotates to the position where the clamping groove is located, the clamping tongue is pressed at the clamping groove position by the pressing plate, so that the mounting seat and the go gauge unit are kept fixed in the axial direction.

Further, the driving assembly comprises a screw, a screw nut sleeved on the screw and provided with a gear, and a transmission gear box meshed with the gear on the screw nut, and the screw is driven by the mutual movement of the screw and the screw nut

The utility model is different from the existing small thread gauge detection structure, is fast to install, and is more suitable for the detection requirement of the large thread gauge.

Drawings

The utility model is described in further detail below with reference to the attached drawing figures, wherein:

fig. 1 is a schematic structural diagram of a conventional go gauge detecting device.

Fig. 2 is a schematic structural view of the present utility model.

FIG. 3 is a schematic diagram of the assembled structure of the detection assembly of the present utility model after connection to a transmission gearbox.

Fig. 4 is a schematic structural view of the gauge unit in the present utility model.

Fig. 5 is a schematic structural view of the unidirectional transmission unit in the present utility model.

Fig. 6 is a structural perspective view of the unidirectional transmission unit in an exploded state in the present utility model.

Fig. 7 is a schematic diagram of a combined structure of the mounting base and the go gauge unit after being matched.

Fig. 8 is a view showing the structure of the mount of the present utility model from another view angle.

Fig. 9 is a schematic structural view of the housing in the go gauge unit of the present utility model.

Detailed Description

For a further understanding of the utility model, reference will now be made to the embodiments illustrated in the drawings, in which the utility model is further described.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the disclosure, its application, or uses.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, unless explicitly stated or limited otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Examples:

as shown in fig. 2, in the go gauge detecting device of the present utility model, a detecting component 2 driven by a driving component 1 is connected and matched, the driving component 1 is composed of a screw 3, a screw nut 4 sleeved on the screw 3 and provided with a gear, and a transmission gear box 5 meshed with the gear on the screw nut 4, the screw 3 drives the screw nut 4 to rotate through the mutual movement between the screw 3 and the screw nut 4, the rotation is a power source, and the power source is sent to the detecting component 2 through the transmission gear box 5 meshed with the screw nut 4, so as to drive the detecting component 2 to act. In the exemplary construction shown in the above figures, the screw nut 4 is also coupled to the transmission gearbox 5 by means of a transition nut and a transition screw for the purpose of mounting, which construction can be adapted to the requirements of use.

As shown in fig. 3, the detection assembly 2 is composed of a mounting seat 6, a go gauge unit 8 elastically clamped on the mounting seat 6 through a pressing plate 7 with a spring, and a unidirectional transmission unit 9 arranged in the mounting seat 6 and used for realizing connection and power transmission between the driving assembly 1 and the go gauge unit 8; firstly, the go gauge unit 8 and the unidirectional transmission unit 9 are coaxially and concentrically arranged and simultaneously installed in the installation seat 6, a quick-release connection relation of elastic clamping is realized between the go gauge unit 8 and the installation seat 6 by using the pressing plate 7, as can be seen in fig. 8 and 9, an installation opening 10 is arranged on the installation seat 6, three notch clamping positions 11 are arranged on the installation opening, corresponding clamping tongues 13 which are matched with the notch clamping positions 11 relatively are arranged on a shell 12 in the go gauge unit 8, the clamping tongues 13 clamp the installation seat 6 and then rotate into a clamping groove preset in the installation seat 6, and then the clamping plate 7 is abutted tightly to fix the go gauge in the clamping groove.

As shown in fig. 7, the lead nut 14 is disposed in the housing 12 of the gauge unit 8, the gauge unit 8 further includes a lead screw 15 inserted into and penetrating through the lead nut 14, and a chuck 16 mounted at the front end of the lead screw 15, the chuck 16 is used for clamping the gauge 17, the chuck 16 is mounted with the gauge 17 of a corresponding specification when in use, in the actual working process, the lead screw 15 and the lead nut 14 are connected and matched by mutually engaged threads, and when the lead screw 15 rotates, the lead screw 14 and the lead screw 14 are relatively in a fixed state, so that the lead screw 15 can realize telescopic movement when rotating. The go gauge 17 thus realizes the action of detecting the threaded hole, since the lead screw 15 is not a power source, it also needs to be connected and matched with the unidirectional transmission unit 9, the unidirectional transmission unit 9 is, as shown in fig. 5 and 6, composed of a hollow shaft body 19 provided with a unidirectional face gear 18 and a transmission piece 21 sleeved on the hollow shaft body 19 and pressed against the unidirectional face gear 18 through a pre-pressing spring 20, the transmission piece 21 is provided with two tooth surfaces, namely an external tooth surface 22 for being meshed with an output gear in the transmission gear box 5 in the driving assembly 1 and a unidirectional tooth surface 23 pressed against the unidirectional face gear 18, and the unidirectional teeth on the unidirectional tooth surface 23 are meshed with the unidirectional teeth on the unidirectional face gear 18, and the matched structure can make the transmission piece 21 drive the hollow shaft body 19 to rotate unidirectionally under the action of the driving assembly 1 and prevent blocking in the rotation.

In the cooperation relationship between the go gauge unit 8 and the unidirectional transmission unit 9, the lead screw 15 is matched with the hollow shaft body 19 inserted into the unidirectional transmission unit 9, and the lead screw 15 and the hollow shaft body 19 are mutually fixed in diameter, so that the lead screw and the hollow shaft body 19 can synchronously act when rotating. For example, the hollow section in the hollow shaft body 19 is square, the lead screw 15 is also square in structural design on a section matched with the hollow section, and radial fixation and axial free connection are realized by matching the two square structures.

The embodiments of the present specification have been described above, and the above description is illustrative, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the application is defined by the appended claims.

Claims

1. Go-gauge detection device to big screw thread, its characterized in that: the device comprises a driving component and a detection component driven by the driving component to work, wherein the detection component comprises three components, namely a mounting seat, a go gauge unit elastically clamped on the mounting seat and a unidirectional transmission unit arranged in the mounting seat and used for realizing connection and power transmission between the driving component and the go gauge unit; the unidirectional transmission unit is composed of a hollow shaft body provided with a unidirectional face gear and a transmission piece sleeved on the hollow shaft body and propped against the unidirectional face gear through a pre-pressing spring, wherein the transmission piece is provided with two tooth surfaces, namely an outer tooth surface matched with a driving assembly and a unidirectional tooth surface propped against the unidirectional face gear, and unidirectional teeth on the unidirectional tooth surface are meshed with unidirectional teeth on the unidirectional face gear, so that the transmission piece is driven to rotate unidirectionally by the driving assembly and is prevented from being blocked upwards due to the rotation.

2. A go gauge inspection apparatus for large threads as claimed in claim 1, wherein: the go gauge unit consists of a shell with a lead nut arranged therein, a lead screw inserted into and penetrating through the lead nut and a chuck arranged at the front end of the lead screw, wherein the chuck is used for clamping the go gauge; the lead screw is matched with the hollow shaft body and synchronously acts with the hollow shaft body when the hollow shaft body rotates.

3. A go gauge inspection apparatus for large threads as claimed in claim 1, wherein: the driving assembly comprises a screw, a screw nut sleeved on the screw and provided with a gear, and a transmission gear box meshed with the gear on the screw nut, and the screw is driven by the mutual movement between the screw and the screw nut.

4. A go gauge inspection apparatus for large threads as claimed in claim 1 or 2, wherein: the mounting seat is provided with a mounting opening matched with the go gauge unit, and a pressing plate which is opposite to the mounting opening and provided with a spring is arranged in the mounting seat; the mounting port is provided with at least two notch clamping positions, the corresponding shell is provided with clamping tongues matched with the notch clamping positions, the clamping tongues on the shell enter the mounting seat through the notch clamping positions and enable the clamping tongues to be staggered with the notch clamping positions after the shell rotates, and the shell is clamped and fixed in the mounting seat under the top pressure of the pressing plate; the mounting opening is also internally provided with a clamping groove matched with the clamping tongue, and when the clamping tongue enters the mounting opening from the notch clamping position and rotates to the position where the clamping groove is located, the clamping tongue is pressed at the clamping groove position by the pressing plate, so that the mounting seat and the go gauge unit are kept fixed in the axial direction.