An airtight detection structure and a positioning device for part machining

Abstract

The utility model discloses a kind of air-tight detection structure, positioning device of component processing, wherein, a kind of air-tight detection structure, include: fixed sleeve, the top of fixed sleeve is equipped with locating groove, the both sides of fixed sleeve are equipped with limit slot;Positioning rod, positioning rod is inserted in locating groove;Spring, spring is arranged between the bottom end surface of positioning rod and locating groove;Positioning block, positioning block is sleeved on positioning rod, and the top of positioning block is equipped with locating face;Air-tight detection hole, air-tight detection hole is set on positioning block;Connecting piece, connecting piece is through positioning block, limit slot and fixed sleeve, and connecting piece is connected together with positioning block and fixed sleeve.The utility model uses the support positioning with spring buffer, and error caused by processing or installation can be effectively compensated.The success rate of accurate positioning of finished part and air-tight detection effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of marking and testing technology for parts, and in particular to an airtightness testing structure and a positioning device for parts processing. Background Technology

[0002] After machining, parts in the machinery industry need to undergo processes such as engraving and inspection. Due to the high precision required for engraving and inspection, the parts need to be accurately positioned on the fixture or gauge, and the position of the parts needs to be accurately determined. For this type of positional judgment of processed products, air tightness testing is commonly used.

[0003] Air tightness testing involves supporting the machined surface of the part, allowing air to pass through micropores on the support surface, and installing pressure detection components in the air path to detect whether there is any leakage between the support and the part. Currently, when performing air tightness testing on parts, the support and the part are often in rigid contact. Due to the excessively high machining accuracy requirements for the support and its susceptibility to vibration, the air tightness testing results are often unsatisfactory. Summary of the Invention

[0004] According to a first aspect of the present invention, an airtightness detection structure is provided, comprising: The fixing sleeve has a positioning groove on the top and a limiting groove on both sides. The positioning rod is inserted into the positioning groove; A spring is provided between the bottom end face of the positioning rod and the positioning groove. A positioning block is fitted onto a positioning rod, and a positioning surface is provided on the top of the positioning block; An airtightness test hole is provided on the positioning block; The connector passes through the positioning block, the limiting groove, and the positioning rod, connecting the positioning block and the positioning rod together.

[0005] Furthermore, it also includes a guide sleeve, which is disposed between the positioning rod and the fixed sleeve to guide the movement of the positioning rod.

[0006] Furthermore, a protective zone is provided on the positioning block.

[0007] Furthermore, it also includes: an air tube connector, which is connected to an airtightness detection hole.

[0008] According to a second aspect of the present invention, a positioning device for machining parts is provided, comprising: substrate; Support module, which is mounted on the base plate, is used to support the parts to be processed; Multiple clamping modules are mounted on the base plate to clamp the parts to be processed. Multiple airtightness detection structures are provided on the substrate.

[0009] Furthermore, the support module includes: Multiple guide blocks are disposed on the substrate, and guide grooves are provided on the guide blocks; Multiple support blocks are set on the substrate to support the parts to be processed.

[0010] Furthermore, a guide surface is provided on the top of the guide block.

[0011] Furthermore, the clamping module includes: A clamping cylinder is mounted on a base plate. A hinge seat is located on top of the clamping cylinder; The pressure rod has one end hinged to the output end of the pressure cylinder; The connecting rod has one end hinged to the hinge seat and the other end hinged to the pressure rod. The pressure block is located at the other end of the pressure rod.

[0012] Furthermore, it also includes two handles, which are located on the top sides of the substrate.

[0013] According to an embodiment of the present invention, an airtightness testing structure utilizes a spring-loaded support positioning method to effectively compensate for errors caused by machining or installation. This improves the positioning accuracy of finished parts and the success rate of airtightness testing.

[0014] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of an airtightness detection structure according to an embodiment of the present invention. Figure 1 .

[0016] Figure 2 This is a cross-sectional view of an airtightness detection structure according to an embodiment of the present invention. Figure 2 .

[0017] Figure 3 This is a three-dimensional structural diagram of a positioning device for machining a component according to an embodiment of the present utility model.

[0018] Figure 4 This is a cross-sectional structural schematic diagram of a positioning device for machining a component according to an embodiment of the present utility model. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0020] First, combine Figures 1-2 This invention describes an airtightness detection structure according to an embodiment of the present invention, used to detect the airtightness between a component and a positioning surface 401, thereby determining whether the component is placed in place. It has a wide range of applications.

[0021] like Figures 1-2 As shown, an airtightness detection structure according to an embodiment of the present invention includes a fixing sleeve 100, a positioning rod 200, a spring 300, a positioning block 400, an airtightness detection hole 500, and a connector 800.

[0022] Specifically, such as Figures 1-2 As shown, the top of the fixed sleeve 100 is provided with a positioning groove 101, and the two sides of the fixed sleeve are provided with limiting grooves 102; the positioning rod 200 is inserted into the positioning groove 101; the spring 300 is provided between the positioning rod 200 and the bottom end face of the positioning groove 101; the positioning block 400 is fixed on the fixed sleeve 100, the top of the positioning block 400 is provided with a positioning surface 401, and the positioning block 400 is sleeved on the positioning rod 200; the airtightness detection hole 500 is opened on the positioning block 400; the connecting piece 800 passes through the positioning block 400, the limiting groove 102 and the positioning rod 200, connecting the positioning block 400 and the positioning rod 200 together, and the connecting piece 800 cooperates with the limiting groove 102 to achieve the purpose of limiting the movement stroke of the positioning rod 200.

[0023] Furthermore, such as Figures 1-2 As shown, an airtightness detection structure according to an embodiment of the present invention further includes: a guide sleeve 600, which is disposed between the positioning rod 200 and the fixing sleeve 100 and is used to guide the movement of the positioning rod 200.

[0024] Furthermore, such as Figures 1-2 As shown, the positioning block 400 has a protective area 601. The protective area 601 is designed to prevent foreign objects from entering the gap between the positioning rod 200 and the guide sleeve 600, thus affecting the free extension and retraction of the positioning rod 200.

[0025] Furthermore, such as Figures 1-2 As shown, an airtightness detection structure according to an embodiment of the present invention further includes: an air pipe connector 700, which is connected to an airtightness detection hole 500 to facilitate connection with an external air blowing device.

[0026] Working principle: The airtightness testing structure is installed on a fixture or gauge. When an external component is placed on the corresponding fixture or gauge, the positioning rod 200 positions the component. The component compresses the positioning rod 200 by its own weight, causing the positioning rod 200 to retract into the positioning groove 101 and compress the spring 300. Then, the component is pressed by the clamping device on the fixture or gauge, thus completing the floating positioning of the component.

[0027] After the part is positioned, air is blown between the part and the positioning surface 401 on the positioning block 400 through the air pipe connector 700. The pressure sensor in the air circuit determines whether the part has been placed in place. The principle is as follows: when the part is placed in place, the part is in close contact with the positioning surface 401, and the air pressure in the air circuit does not drop, indicating that the positioning accuracy is qualified; if there is a gap between the part and the positioning surface 401, the air pressure in the air circuit leaks, the sensor alarms, and the part positioning accuracy is determined to be unqualified.

[0028] As described above, in an airtightness testing structure according to an embodiment of the present invention, the use of a support positioning system with a spring 300 buffer can effectively compensate for errors caused by machining or installation. This improves the positioning accuracy of the finished part and the success rate of airtightness testing.

[0029] The above combined with the appendix Figures 1-2 An airtightness detection structure according to an embodiment of the present invention is described. Furthermore, the present invention can also be applied to a positioning device for parts processing.

[0030] like Figures 1-4 As shown, according to a second aspect of the present invention, a positioning device for processing parts is provided, comprising: a base plate 10, a support module, a plurality of clamping modules, and a plurality of airtightness detection structures of the first aspect.

[0031] Specifically, such as Figures 1-3 As shown, a support module is mounted on the substrate 10 to support the parts to be processed. The support module includes multiple guide blocks 21 and multiple support blocks 22. The multiple guide blocks 21 are mounted on the substrate 10 and have guide grooves; the multiple support blocks 22 are mounted on the substrate 10 to support the parts to be processed. The multiple guide blocks 21 and multiple support blocks 22 allow for the guiding, mounting, and support of the parts.

[0032] Furthermore, such as Figures 1-3 As shown, the top of the guide block 21 is provided with a guide surface 23, which is used to guide the placement of the parts and facilitates the placement of the parts.

[0033] Specifically, such as Figures 1-3As shown, multiple clamping modules are mounted on the base plate 10 for clamping the parts to be processed. Each clamping module includes: a clamping cylinder 31, a hinge seat 32, a pressure rod 33, a connecting rod 34, and a pressure block 35. The clamping cylinder 31 is mounted on the base plate 10; the hinge seat 32 is mounted on top of the clamping cylinder 31; one end of the pressure rod 33 is hinged to the output end of the clamping cylinder 31; one end of the connecting rod 34 is hinged to the hinge seat 32, and the other end is hinged to the pressure rod 33; the pressure block 35 is mounted on the other end of the pressure rod 33. By controlling the operation of the clamping cylinder 31, the pressure rod 33, under the action of the connecting rod 34, flips and presses down on the parts, thus clamping them.

[0034] Specifically, such as Figures 1-3 As shown, multiple airtightness detection structures are set on the substrate 10 to detect whether the components are completely attached to the positioning surface 401.

[0035] Furthermore, such as Figures 1-3 As shown, the positioning device for processing parts according to this utility model further includes: two handles 50, which are disposed on the top two sides of the base plate 10.

[0036] Working principle: Multiple airtightness detection structures are mounted on the base plate 10. When external components are placed on the positioning device, the positioning rod 200 positions the component. The component compresses the positioning rod 200 by its weight, causing the positioning rod 200 to retract into the positioning groove 101 and compress the spring 300. Then, multiple clamping modules clamp the component to complete the floating positioning of the component.

[0037] After the part is positioned, air is blown between the part and the positioning surface 401 on the positioning block 400 through the air pipe connector 700. The pressure sensor in the air circuit determines whether the part has been placed in place. The principle is as follows: when the part is placed in place, the part is in close contact with the positioning surface 401, and the air pressure in the air circuit does not drop, indicating that the positioning accuracy is qualified; if there is a gap between the part and the positioning surface 401, the air pressure in the air circuit leaks, the sensor alarms, and the part positioning accuracy is determined to be unqualified.

[0038] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. An airtightness detection structure, characterized in that, Include: A fixing sleeve, wherein the top of the fixing sleeve is provided with a positioning groove and the two sides of the fixing sleeve are provided with limiting grooves; A positioning rod, wherein the positioning rod is inserted into the positioning groove; A spring is disposed between the bottom end face of the positioning rod and the positioning groove; A positioning block, which is sleeved on a positioning rod, has a positioning surface on its top; An airtightness detection hole is provided on the positioning block; A connector that passes through the positioning block, the limiting groove, and the positioning rod, connecting the positioning block and the positioning rod together; A guide sleeve is disposed between the positioning rod and the fixing sleeve to guide the movement of the positioning rod. It also includes: an air tube connector, which is connected to the airtightness detection hole.

2. The airtightness detection structure as described in claim 1, characterized in that, The positioning block is equipped with a protective zone.

3. A positioning device for machining parts, characterized in that, Include: substrate; A support module, which is disposed on the substrate, is used to support the parts to be processed; Multiple clamping modules are disposed on the substrate and are used to clamp the parts to be processed; The airtightness detection structure according to any one of claims 1 to 2, wherein the plurality of the airtightness detection structures are disposed on the substrate.

4. The positioning device for machining parts as described in claim 3, characterized in that, The support module includes: Multiple guide blocks are disposed on the substrate, and guide grooves are provided on the guide blocks; Multiple support blocks are disposed on the substrate to support the parts to be processed.

5. The positioning device for machining parts as described in claim 4, characterized in that, The top of the guide block is provided with a guide surface.

6. The positioning device for machining parts as described in claim 3, characterized in that, The clamping module includes: A clamping cylinder is disposed on the base plate; A hinge seat, wherein the hinge seat is disposed on the top of the clamping cylinder; A pressure rod, one end of which is hinged to the output end of the clamping cylinder; A connecting rod, one end of which is hinged to the hinge seat and the other end of which is hinged to the pressure rod; A pressure block is disposed at the other end of the pressure rod.

7. The positioning device for machining parts as described in claim 3, characterized in that, It also includes: two handles, which are disposed on the top sides of the substrate.

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