Quick-release drilling clamp for batch machining of gasket parts

Abstract

The utility model provides a quick-release drilling clamp for machining gasket parts in batches. The quick-release drilling clamp comprises a mandrel, a cover plate, a fixing bolt and a positioning stop pin. One end of the mandrel is clamped to a machine tool chuck, the other end of the mandrel is matched with inner holes of a plurality of parts to be machined, and bolt holes and stop pin holes are formed in the end face of the mandrel. The cover plate covers the mandrel and the part to be machined and is provided with a U-shaped groove extending in the radial direction, and a plurality of drilling positioning holes are formed in the periphery of the cover plate. And a fixing bolt penetrates through the U-shaped groove and the bolt hole to fix and clamp the part between the core shaft and the cover plate. The positioning stop pin penetrates through the U-shaped groove and the stop pin hole to limit the cover plate in the circumferential direction. The clamp can clamp a plurality of parts at a time, batch drilling of the parts can be completed at a time, when the parts are clamped again for drilling, only one-time zero setting correction is needed before machining, the cover plate is fast and convenient to assemble and disassemble, and the drilling efficiency is high; the fixing bolt clamps the part through the cover plate, the part is fixed reliably, and the drilling precision can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of benchwork drilling fixtures, and in particular relates to a quick-release drilling fixture used for batch processing of gasket parts. Background Art

[0002] As one of the most common parts in various mechanical components, gaskets have the main functions of sealing and shock absorption. They are widely used in various industries such as aerospace, aviation, and precision equipment, and are in particularly high demand. For the mechanical processing industry, low drilling efficiency and poor quality of gasket parts are a common problem. The reasons are: First, metal gasket parts are relatively thin and prone to vibration during the drilling process, resulting in problems such as deviation in drilling and drilling elliptical holes, making it difficult to ensure hole accuracy; Second, traditional drilling tools use fixed pins, which require repeated insertion for positioning during processing. Only one hole per gasket can be processed at a time, which is not only inefficient but also complex. It also increases the labor intensity of operators and leads to increased labor costs. Utility Model Content

[0003] The purpose of the utility model is to solve the problem of low drilling efficiency and poor quality caused by the use of fixed pins in the prior art for drilling gasket parts, and to provide a quick-release drilling fixture for batch processing of gasket parts. The fixture is easy to use, can improve the loading and unloading and processing efficiency of parts, and ensure processing quality.

[0004] To achieve the above objectives, the technical solutions provided by this utility model are:

[0005] A quick-release drilling fixture for batch processing of gasket parts, which is special in that it includes a core shaft, a cover plate, a fixing bolt and a positioning stop pin;

[0006] The core shaft is a stepped shaft, one end of which is used to be clamped on the chuck of the machine tool for processing the gasket, and the other end is used to cooperate with the inner holes of multiple parts to be processed. The end surface of the core shaft that cooperates with the parts to be processed is provided with a bolt hole in the middle part and a stop pin hole is provided in the outer part of the middle part;

[0007] The cover plate is coaxially arranged with the core shaft and is used to cover the core shaft and the workpiece to be processed. It is provided with a radially extending U-shaped groove. The closed bottom of the U-shaped groove is located in the middle of the cover plate and leads to the outer edge of the cover plate to allow the fixing bolts and the positioning stop pins to enter and exit the cover plate. A plurality of drilling positioning holes are arranged on the outer periphery of the cover plate, which can be aligned with the holes to be drilled on the workpiece to be processed.

[0008] The fixing bolt can axially pass through the U-shaped groove on the cover plate and the bolt hole on the core shaft in sequence, fixing and clamping the workpiece to be processed between the core shaft and the cover plate;

[0009] The positioning stop pin can axially pass through the U-shaped groove on the cover plate and the stop pin hole on the core shaft in sequence to limit the cover plate circumferentially.

[0010] Furthermore, the end of the mandrel for clamping on the machine tool chuck and the end of the mandrel for matching with the inner hole of the part to be machined can be used interchangeably.

[0011] Furthermore, the drilling positioning hole is U-shaped.

[0012] Furthermore, the portion of the fixing bolt connected to the core shaft is processed with an external thread, and the portion connected to the cover plate is a polished rod.

[0013] The advantages of the utility model are:

[0014] 1. The utility model is a quick-release drilling fixture for batch processing of gasket parts, comprising a core shaft, a cover plate, fixing bolts and positioning pins. The core shaft can be clamped on the chuck of a machine tool, and multiple gasket parts can be clamped therebetween together with the cover plate. The parts are clamped by the fixing bolts. The positioning pins cooperate with the U-shaped groove on the cover plate to limit the cover plate circumferentially. At the same time, a plurality of drilling positioning holes aligned with the holes to be processed on the parts are arranged on the outer periphery of the cover plate. Therefore, using the fixture of the present invention, multiple parts can be clamped at one time, and batch drilling of multiple parts can be completed at one time. When re-clamping the parts for multiple clamping and drilling, due to the positioning limit of the fixing bolts and the positioning pins, the fixture only needs to be "zeroed" once before processing. At the same time, the installation and disassembly of the cover plate can be carried out quickly and conveniently. It is only necessary to slide the U-shaped groove on the cover plate along the fixing bolts and the positioning pins. It is easy to use. After that, the tool can batch process the required holes on the outer periphery of the part by positioning the drilling positioning holes, which increases the drilling efficiency exponentially. In addition, the fixture can clamp multiple parts at one time, and the fixing bolts press the entire surface of the part through the cover plate to clamp the part, thereby realizing reliable fixation of the part and ensuring drilling accuracy.

[0015] 2. The end of the core shaft in the utility model used for clamping on the machine tool chuck and the end thereof used for cooperating with the inner hole of the part to be processed can be used interchangeably, so that the fixture is suitable for drilling holes of two specifications of gaskets. When the core shaft is in use, one end can be used as the assembly surface of the part, and the other end can be protected and clamped with the chuck, which can be used for "two purposes". BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or other features and advantages of the present invention will become more easily understood through the following description with reference to the accompanying drawings, which are not drawn to scale and in which some features are exaggerated or reduced to show details of specific components. In the accompanying drawings:

[0017] Figure 1 This is a schematic three-dimensional diagram of the quick-release drilling fixture for batch processing of gasket parts of the present invention;

[0018] Figure 2 This is a schematic three-dimensional diagram of the clamp of the present invention in use;

[0019] Figure 3 It is a schematic three-dimensional diagram of the core shaft in the clamp of the present invention.

[0020] In the figure: 1-clamp; 2-core shaft, 21-bolt hole, 22-stop pin hole; 3-cover plate, 31-U-shaped groove, 32-drilling positioning hole; 4-fixing bolt; 5-positioning stop pin; 100-part to be processed; 200-drilling machine, 201-chuck. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings by means of exemplary embodiments of the present invention. It should be noted that the following detailed description of the present invention is only for the purpose of illustration and is not intended to limit the present invention.

[0022] The utility model provides a quick-release drilling fixture for batch processing of gasket parts, which is used for clamping the parts when drilling holes in the gasket parts. The fixture provided by the utility model is now described.

[0023] Reference Figure 1 and Figure 2 As an exemplary embodiment of the present invention, a quick-release drilling fixture 1 for batch processing of gasket parts includes a core shaft 2, a cover plate 3, a fixing bolt 4 and a positioning pin 5.

[0024] Combine Figure 3The mandrel 2 is a stepped shaft, one end of which is clamped to the chuck of the machine tool used to process the gasket, and the other end is used to mate with the inner hole of the part 100 to be machined. Depending on the thickness of the part, multiple gasket-like parts can be coaxially clamped. Those skilled in the art will understand that the number of gasket-like parts should be selected so that the mandrel 2 and cover plate 3 in the fixture can clamp all parts. Specifically, the mandrel 2 includes three sections, with the two sections at each end being used for connection to the chuck and the part 100 to be machined, respectively. These two sections are interchangeable. That is, the outer diameters of these two sections can be designed to differ depending on the size of the inner hole of the gasket to be drilled, making the fixture suitable for drilling gaskets of two sizes. When the mandrel is in use, one end can serve as the assembly surface for the part, while the other end is protected and clamped in the chuck, creating a "two-in-one" solution. This approach improves the fixture's applicability. When drilling gasket-like parts of other sizes, if the thickness varies, the material properties of the part and whether chip removal is smooth should be considered. The number of parts to be drilled at one time can be determined based on the specific situation. The axial end surface of the middle section of the mandrel 2 can contact the surface of the workpiece 100 to be processed to reliably clamp the workpiece. The end surface of the mandrel 2 that cooperates with the workpiece 100 to be processed is provided with a bolt hole 21 in the middle and a stop pin hole 22 in the outer part of the middle.

[0025] The cover plate 3 is coaxially arranged with the core shaft 2, and is used to cover the core shaft 2 and the part to be processed 100, and is provided with a radially extending U-shaped groove 31. The closed bottom of the U-shaped groove 31 is located in the middle of the cover plate 3, and is used to pass the fixing bolt 4. The U-shaped groove leads to the outer edge of the cover plate 3 to allow the fixing bolt 4 and the positioning stop pin 5 to enter and leave the cover plate 3.

[0026] Furthermore, the outer periphery of the cover plate 3 is provided with multiple drilling locating holes 32 that align with the holes to be drilled on the workpiece 100. Once the workpiece and fixture are installed, the drill bit of the drilling machine 200 can be positioned along the outer periphery of the workpiece using the drilling locating holes 32 to batch-machine the desired holes. The drilling locating holes 32 can optionally be U-shaped to facilitate drilling. The drilling locating holes 32 can be adaptively designed based on the locations of the holes to be drilled on the workpiece, enabling the machining of all holes on one or more workpieces in a single setup.

[0027] The fixing bolt 4 can be sequentially inserted axially through the U-shaped groove 31 in the cover plate 3 and the bolt hole 21 in the mandrel 2, thereby securing and clamping the workpiece 100 between the mandrel 2 and the cover plate 3. The portion of the fixing bolt 4 that connects to the mandrel 2 is externally threaded, while the portion that connects to the cover plate 3 is a polished rod. The fixing bolt 4 can slide along the U-shaped groove in the cover plate 3, ensuring that it does not leave the mandrel 2 during installation and removal of the cover plate 3.

[0028] The positioning stop pin 5 can axially pass through the U-shaped groove 31 on the cover plate 3 and the stop pin hole 22 on the core shaft 2 in sequence to limit the cover plate 3 in the circumferential direction. The positioning stop pin 5 can slide along the U-shaped groove of the cover plate 3, and the positioning stop pin 5 does not leave the core shaft 2 when the cover plate 3 is installed and removed. In other words, when reinstalling a batch of gasket-like parts that need to be drilled, both the fixing bolt 4 and the positioning stop pin 5 do not leave the core shaft 2, so as to limit the cover plate 2 in the circumferential direction when the cover plate 2 is installed after the parts are replaced. This structure can avoid the need to "zero" the fixture again before processing after replacing the parts, and there is no need to re-position it, which saves alignment time and improves processing efficiency.

[0029] The following is an example of the use of the quick-release drilling fixture for batch processing of gasket parts of the utility model:

[0030] Step 1: Clamp the mandrel 2 onto the chuck 201 of the drilling machine 200, ensuring that the end face of the mandrel is horizontal and then clamp it;

[0031] Step 2: tighten the fixing bolt 4 on the core shaft 2 to a semi-loose state, and put a certain number of gasket-like parts to be processed 100 on the core shaft 2 in the correct direction;

[0032] Step 3: Install the cover plate 3 so that the fixing bolt 4 and the positioning stop pin 5 enter the U-shaped groove 31. When the fixing bolt 4 reaches the closed bottom of the U-shaped groove 31, tighten the fixing bolt 4 to press the part 100 to be processed.

[0033] Step 4: Measure the thickness of the tightened parts 100 to be processed in batches, use a drilling machine to perform center positioning and zero calibration, locate the position of the drilling positioning holes 32 on the cover plate 3, and then perform batch processing after completion;

[0034] Step 5: After the processing of this batch of parts is completed, unscrew the fixing bolts 4, remove the cover plate 3, and take out the batch of parts;

[0035] Step 6, replace the part to be processed 100, insert the part into the core shaft 2, insert the cover plate 3, that is, slide the fixing bolt 4 and the positioning pin 5 along its U-shaped groove 31 until the fixing bolt 4 reaches the closed bottom of the U-shaped groove 31, tighten the fixing bolt 4, no need to repeat positioning, use the drilling machine for processing, and repeat this process until the drilling of all parts is completed.

[0036] As described above, the fixture of the present invention can be used to clamp multiple parts at a time, and batch drilling of multiple parts can be completed at one time. When re-clamping the parts for multiple clamping and drilling, due to the positioning limit of the fixing bolts and the positioning pins, the fixture only needs to be "zeroed" once before processing. At the same time, the installation and disassembly of the cover plate can be carried out quickly and conveniently. It is only necessary to slide the U-shaped groove on the cover plate along the fixing bolts and the positioning pins, which is easy to use. After that, the tool can batch process the required holes on the outer periphery of the part by positioning the drilling positioning holes, thereby increasing the drilling efficiency exponentially. In addition, the fixture can clamp multiple parts at a time, and the fixing bolts press the entire surface of the part through the cover plate to clamp the part, thereby realizing reliable fixation of the part and ensuring drilling accuracy.

[0037] Finally, it should be noted that the features mentioned and / or illustrated in the above description of the exemplary embodiments of the present invention may be combined in the same or similar manner into one or more other embodiments, and may be combined with or replace the features of other embodiments. The technical solutions obtained by such combination or replacement shall also be deemed to be included in the scope of protection of the present invention.

Claims

1. A quick-release drilling fixture for batch processing of gasket parts, characterized by: It includes a core shaft, a cover plate, a fixing bolt and a positioning stop pin; The core shaft is a stepped shaft, one end of which is used to be clamped on the chuck of the machine tool for processing the gasket, and the other end is used to cooperate with the inner holes of multiple parts to be processed. The end surface of the core shaft that cooperates with the parts to be processed is provided with a bolt hole in the middle part and a stop pin hole is provided in the outer part of the middle part; The cover plate is coaxially arranged with the core shaft, used to cover the core shaft and the workpiece to be processed, and is provided with a radially extending U-shaped groove, the closed bottom of the U-shaped groove is located in the middle of the cover plate and leads to the outer edge of the cover plate, so as to allow the fixing bolt and the positioning stop pin to enter and exit the cover plate; a plurality of drilling positioning holes that can be aligned with the holes to be drilled on the workpiece to be processed are arranged at the outer periphery of the cover plate; The fixing bolt can axially pass through the U-shaped groove on the cover plate and the bolt hole on the core shaft in sequence to fix and clamp the workpiece to be processed between the core shaft and the cover plate; The positioning stop pin can axially pass through the U-shaped groove on the cover plate and the stop pin hole on the core shaft in sequence to limit the circumferential position of the cover plate.

2. The quick-release drilling fixture for batch processing of gasket parts according to claim 1, characterized in that: The end of the core shaft for clamping on the machine tool chuck and the end of the core shaft for matching with the inner hole of the part to be machined can be used interchangeably.

3. The quick-release drilling fixture for batch processing of gasket parts according to claim 1 or 2, characterized in that: The drilling positioning hole is U-shaped.

4. The quick-release drilling fixture for batch processing of gasket parts according to claim 1 or 2, characterized in that: The portion of the fixing bolt connected to the core shaft is processed with an external thread, and the portion connected to the cover plate is a polished rod.

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