A quick-change mechanism for inspection tools

Abstract

The present invention provides a quick interchange mechanism for a gauge, which belongs to the field of mechanical technology and solves the problem of inconvenient operation of existing gauges. The quick interchange mechanism for a gauge includes: a base, a locking hole is provided in the middle, and two locating pins are symmetrically arranged on both sides of the locking hole; an interchange block, which covers the base, and the interchange block is provided with two through holes corresponding to the two locating pins one by one; an adjustment block, which is located between the base and the interchange block, and the adjustment block is provided with two mounting holes corresponding to the two through holes one by one, and a linear bearing is embedded in the mounting hole, and each locating pin passes through the corresponding linear bearing; a rotary handle, which passes through the interchange block and the adjustment block in sequence from the outside to the inside and is partially screwed into the locking hole, and when the rotary handle is disengaged from the locking hole, it can drive the interchange block and the adjustment block to disengage from the base together. The present invention has the characteristic of being easy to operate.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology and relates to a quick interchange mechanism for a checking tool. Background Art

[0002] Gauges are simple tools used by industrial manufacturers to control various dimensions of products (such as hole diameter, space dimensions, etc.), improve production efficiency and control quality. They are suitable for mass-produced products such as automotive parts to replace professional measuring tools such as smooth plug gauges, thread plug gauges, and outside diameter caliper gauges.

[0003] Existing inspection tools are often special dimensional error detection tools that are adjustable and most of the parts can be reused. They can complete the inspection of different models or products through appropriate adjustments, so they have the characteristics of one-to-many, small space and less material waste. At the same time, this type of inspection tool is usually a modular structure, the manufacturing cycle is usually relatively short, and it is easy to assemble and disassemble, flexible and convenient to operate, and convenient for inspection work.

[0004] When existing inspection fixtures perform various parameter tests on workpieces, they need to use detection blocks, simulation blocks, etc. After a test is completed, the detection blocks, simulation blocks and other components need to be replaced. To ensure detection efficiency, it is necessary to achieve rapid interchangeability of detection blocks and simulation blocks. However, when existing inspection fixtures are interchangeable, it is easy for digital-to-analog comparison measurements to be non-compliant, or the detection holes cannot be aligned, resulting in jamming and high difficulty in disassembly and assembly, thereby affecting the detection results.

[0005] In summary, in order to solve the structural deficiencies of the existing gauge replacement module, the present invention designs a quick-exchange mechanism for gauges that is simple in structure and easy to operate. Summary of the invention

[0006] In order to solve the problems existing in the prior art, the present invention provides a quick interchange mechanism for a checking tool which has a simple structure and is easy to operate.

[0007] The object of the present invention can be achieved by the following technical solution: A quick interchange mechanism for a gauge, comprising:

[0008] The base has a lock hole in the middle, and two positioning pins are symmetrically arranged on both sides of the lock hole;

[0009] An interchangeable block is covered on the base, and two through holes corresponding to the two positioning pins are opened on the interchangeable block;

[0010] The adjusting block is located between the base and the interchangeable block. Two mounting holes corresponding to the two through holes are opened on the adjusting block, and linear bearings are embedded in the mounting holes. Each positioning pin passes through the corresponding linear bearing.

[0011] The rotating handle passes through the interchangeable block and the adjusting block in sequence from the outside to the inside and is partially rotated into the locking hole. When the rotating handle is separated from the locking hole, it can drive the interchangeable block and the adjusting block to separate from the base together.

[0012] As a further improvement of the present invention, the diameter of each through hole is larger than the diameter of the corresponding mounting hole, the linear bearing portion extends into the corresponding through hole, and the two positioning pins are tightly matched with the two linear bearings respectively.

[0013] As a further improvement of the present invention, a screw sleeve which is sleeved on the rotary handle is embedded in the lock hole, and the rotary handle is threadedly connected to the screw sleeve.

[0014] As a further improvement of this case, the end face of the linear bearing facing the positioning pin is flush with the surface of the adjustment block, the positioning pin is provided with a first step surface, and the linear bearing rests on the first step surface, and the adjustment block is respectively fitted with the interchangeable block and the base.

[0015] As a further improvement of the present invention, a second step surface is provided on the side of the rotating handle facing the interchange block, and the second step surface abuts against the surface of the interchange block.

[0016] As a further improvement of the present invention, a plurality of connection holes are provided on the surface of the interchangeable block, a screw is embedded in each connection hole and a portion of the screw is embedded in the adjustment block.

[0017] As a further improvement of the present invention, a plurality of pin holes are provided on the surface of the interchangeable block, and each pin hole penetrates inwardly through the adjusting block.

[0018] As a further improvement of the present invention, adjustment holes communicating with the two mounting holes are respectively provided on both sides of the adjustment block.

[0019] Compared with the prior art, the present invention has a reasonable structure. Through the coordinated arrangement of the locating pin and the linear bearing, the guiding effect and positioning accuracy are improved, and disassembly and replacement are convenient. At the same time, an adjustment block is provided to facilitate the coordinated installation of the interchangeable block and the inspection fixture, reduce the processing difficulty of the interchangeable block, and prevent it from being scrapped due to hole position errors, which is conducive to the detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 yes Figure 1 sectional view of .

[0022] Figure 3 yes Figure 1 Schematic diagram of part of the structure.

[0023] Figure 4 yes Figure 3 Schematic diagram of part of the structure.

[0024] Figure 5 It is a diagram of the opening state of the inspection tool in the present invention.

[0025] Figure 6 It is a working state diagram of the inspection tool in the present invention.

[0026] In the figure, 10, base; 11, lock hole; 12, positioning pin; 121, first step surface; 13, screw sleeve; 20, interchangeable block; 21, through hole; 22, rotary handle; 221, second step surface; 23, connecting hole; 24, pin hole; 30, adjusting block; 31, linear bearing; 32, adjusting hole. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below in conjunction with the embodiments and drawings.

[0028] like Figures 1 to 6 As shown, the quick-change mechanism for this inspection fixture includes:

[0029] The base 10 has a locking hole 11 in the middle, and two positioning pins 12 are symmetrically arranged on both sides of the locking hole 11;

[0030] The interchangeable block 20 is covered on the base 10, and two through holes 21 corresponding to the two positioning pins 12 are formed on the interchangeable block 20;

[0031] The adjusting block 30 is located between the base 10 and the interchangeable block 20. The adjusting block 30 is provided with two mounting holes corresponding to the two through holes 21. A linear bearing 31 is embedded in the mounting holes. Each positioning pin 12 passes through the corresponding linear bearing 31.

[0032] The rotating handle 22 passes through the interchangeable block 20 and the adjusting block 30 from the outside to the inside in sequence and is partially screwed into the locking hole 11 . When the rotating handle 22 is separated from the locking hole 11 , it can drive the interchangeable block 20 and the adjusting block 30 to separate from the base 10 together.

[0033] Existing inspection fixtures often use detection blocks, simulation blocks, etc. to test various parameters of workpieces. To ensure detection efficiency, it is necessary to achieve rapid interchangeability between detection blocks and simulation blocks. However, when exchanging modules, existing inspection fixtures are prone to non-compliant digital-to-analog comparison measurements, or detection holes cannot be aligned, resulting in disassembly and assembly jams and high difficulty, thus affecting the detection results.

[0034] To this end, the present invention designs a quick interchange mechanism for a gauge, specifically, by providing an interchangeable component and installing it on the gauge. During inspection, the entire interchangeable component can be directly interchanged to increase the speed and ensure inspection efficiency. The interchangeable block 20 can be a detection block, a simulation block, or other components.

[0035] The base 10 is actually the base of the inspection fixture. The interchangeable block 20, the adjustment block 30 and the rotary handle 22 are installed on the base 10 as an integral interchangeable component. The positioning pin 12 cooperates with the linear bearing 31 to achieve a stable connection between the interchangeable component as a whole and the base 10.

[0036] Specifically, the linear bearing 31 is sleeved on the corresponding positioning pin 12, and the adjusting block 30 is abutted against the base 10, the interchangeable block 20 is abutted against the adjusting block 30, and the rotary handle 22 is always passed through the interchangeable block 20. During installation, you only need to screw the rotary handle 22 into the lock hole 11 to ensure that the interchangeable block 20, the adjusting block 30 and the base 10 are tightly connected.

[0037] In actual use, after a part of the data is detected, the handle 22 can be loosened to disengage from the lock hole 11, and the adjustment block 30 can be disengaged from the two positioning pins 12. That is, the entire interchangeable component can be quickly disassembled from the inspection fixture and replaced with another interchangeable component to perform different data detection.

[0038] Preferably, the diameter of each through hole 21 is larger than the diameter of the corresponding mounting hole, the linear bearing 31 partially extends into the corresponding through hole 21 , and the two positioning pins 12 are tightly matched with the two linear bearings 31 respectively.

[0039] The adjusting block 30 ensures accurate positioning through the cooperation between the linear bearing 31 and the positioning pin 12. The interchangeable block 20 is fixedly connected to the base 10 through the rotary handle 22 on the one hand, and on the other hand, the spatial position is limited by the setting of the through hole 21 and the linear bearing 31. In this embodiment, the linear bearing 31 is preferably tightly fitted with the mounting hole on the adjusting block 30 to improve the connection stability between the components in the interchangeable assembly and facilitate the overall installation and disassembly.

[0040] The diameter of the through hole 21 is larger than the diameter of the mounting hole. The linear bearing 31 partially extends into the through hole 21 and forms a gap with the inner wall of the through hole 21. The gap is preferably 0.5 mm here, leaving adjustment space to facilitate the adjustment block 30 to adjust the position to match the interchangeable block 20, and assemble to form an integral interchangeable component to avoid the interchangeable block 20 being scrapped due to the hole processing error on the interchangeable block 20, thereby reducing the processing accuracy of the interchangeable block 20 and facilitating the processing and manufacturing of the interchangeable block 20.

[0041] Among them, when the interchangeable component is installed on the base 10, when the linear bearing 31 and the positioning pin 12 just come into contact, there is no steel ball at the bearing hole, and the fitting clearance is relatively large, so it can be smoothly introduced. After it is fully inserted, the positioning pin 12 comes into contact with all the exposed steel balls, and the fitting clearance meets the use requirements, ensuring that the positioning is not loose and ensuring that the adjustment block 30 is tightly connected to the base 10.

[0042] Furthermore, a screw sleeve 13 which is sleeved on the rotary handle 22 is embedded in the lock hole 11 , and the rotary handle 22 is threadedly connected to the screw sleeve 13 .

[0043] A screw sleeve 13 is actually installed in the lock hole 11. After the handle 22 enters the lock hole 11, the head is threadedly connected to the screw sleeve 13, further fixing the interchangeable block 20 to the base 10, ensuring that the entire interchangeable assembly and the base 10 are stably installed, facilitating the smooth progress of subsequent inspection work.

[0044] Preferably, the end face of the linear bearing 31 facing the positioning pin 12 is flush with the surface of the adjustment block 30, the positioning pin 12 is provided with a first step surface 121, and the linear bearing 31 abuts against the first step surface 121, and the adjustment block 30 is respectively arranged in a fit with the interchangeable block 20 and the base 10.

[0045] In this embodiment, one end of the linear bearing 31 is preferably flush with the surface of the adjusting block 30, and the other end passes through the adjusting block 30 and enters the through hole 21 on the interchangeable block 20. At the same time, a first step surface 121 is provided on the positioning pin 12. When the adjusting block 30 abuts against the base 10, the linear bearing 31 abuts against the first step surface 121, and the two end surfaces of the adjusting block 30 are tightly fitted with the base 10 and the interchangeable block 20 respectively, with good stability.

[0046] Furthermore, the handle 22 is provided with a second step surface 221 on the side facing the interchangeable block 20, and the second step surface 221 abuts against the face of the interchangeable block 20. Preferably, the handle 22 is screwed into the lock hole 11 and then continues to be screwed inward until the second step surface 221 on the handle 22 abuts against the face of the interchangeable block 20. At this time, the handle 22 firmly connects the interchangeable block 20 to the base 10.

[0047] Preferably, a plurality of connection holes 23 are opened on the surface of the interchangeable block 20 , and a screw (not shown in the figure) is embedded in each connection hole 23 and a portion of the screw is embedded in the adjustment block 30 .

[0048] In actual operation, the whole interchangeable assembly is assembled and each interchangeable assembly is replaced as needed. During assembly, first install the linear bearing 31 into the adjustment block 30, and connect the adjustment block 30 with the interchangeable block 20 through screws. The screws are not tightened and are in a loose state. Install the assembled interchangeable block 20 assembly on the inspection fixture for debugging, adjust them to qualified, and the accuracy is ±0.1mm, and then tighten each screw.

[0049] Furthermore, a plurality of pin holes 24 are provided on the surface of the interchangeable block 20, and each pin hole 24 penetrates inwardly through the adjustment block 30. In order to ensure the connection stability between the adjustment block 30 and the interchangeable block 20, a pin hole 24 is further provided on the interchangeable block 20, and a pin (not shown in the figure) is embedded in the pin hole 24, and the pin is set through the adjustment block 30. When the interchangeable assembly is debugged, the screws are tightened and the pins are installed.

[0050] Preferably, adjustment holes 32 communicating with the two mounting holes are respectively provided on both sides of the adjustment block 30. A pin (not shown in the figure) and other components can be installed in the adjustment hole 32, and the linear bearing 31 in the pin mounting hole is locked. The position of the adjustment pin can also be adjusted within a certain range so that the linear bearing 31 and the positioning pin 12 can be accurately matched, which is conducive to the installation of the interchangeable component and the base 10.

[0051] It is worth mentioning that the adjustment blocks 30 in this embodiment are preferably two symmetrically arranged adjustment blocks 30, which are respectively arranged corresponding to the two linear bearings 31, and a space is left between the two adjustment blocks 30 for the handle 22 to pass through. The structure of the adjustment block 30 can be set as needed during actual manufacturing, and is not limited here.

[0052] The structure of the quick interchange mechanism of the inspection fixture is reasonably set. The positioning pin 12 and the linear bearing 31 are matched to improve the guiding effect and positioning accuracy, and the disassembly and replacement are convenient. At the same time, an adjustment block 30 is provided to facilitate the matching installation of the interchange block 20 and the inspection fixture, reduce the processing difficulty of the interchange block 20, and will not be scrapped due to reasons such as hole position errors, which is conducive to the detection work.

[0053] The preferred embodiments of the present invention are described herein, but the protection scope of the present invention is not limited thereto. Any modification or supplement or replacement of the specific embodiments described by those skilled in the art shall be included in the protection scope of the present invention.

Claims

1. A quick interchange mechanism for a gauge, characterized in that: include: The base has a lock hole in the middle, and two positioning pins are symmetrically arranged on both sides of the lock hole; An interchangeable block is covered on the base, and two through holes corresponding to the two positioning pins are opened on the interchangeable block; The adjusting block is located between the base and the interchangeable block. Two mounting holes corresponding to the two through holes are opened on the adjusting block, and linear bearings are embedded in the mounting holes. Each positioning pin passes through the corresponding linear bearing. The rotating handle passes through the interchangeable block and the adjusting block from the outside to the inside in sequence and is partially screwed into the locking hole. When the rotating handle is separated from the locking hole, it can drive the interchangeable block and the adjusting block to separate from the base together; The diameter of each through hole is larger than the diameter of the corresponding mounting hole, the linear bearing portion extends into the corresponding through hole, and the two positioning pins are respectively tightly matched with the two linear bearings; The diameter of the through hole is larger than the diameter of the mounting hole. The linear bearing part extends into the through hole and forms a gap with the inner wall of the through hole. The gap is 0.5mm, and there is a remaining adjustment space, which is convenient for adjusting the position of the adjustment block to match the interchangeable block and assemble to form an integral interchangeable component. A screw sleeve is embedded in the lock hole and sleeved on the rotary handle, and the rotary handle is threadedly connected to the screw sleeve; The end surface of the linear bearing facing the positioning pin is flush with the surface of the adjustment block, the positioning pin is provided with a first step surface, and the linear bearing abuts against the first step surface, and the adjustment block is respectively fitted with the interchangeable block and the base; A second step surface is provided on the side of the rotating handle facing the interchange block, and the second step surface abuts against the face of the interchange block; The interchangeable block has a plurality of connection holes on its surface, each of which is embedded with a screw and the screw is partially embedded in the adjustment block; The interchangeable block surface is also provided with a plurality of pin holes, each of which penetrates inwardly through the adjustment block; Adjustment holes communicating with the two mounting holes are respectively provided on both sides of the adjustment block.

Images