Adjustable reverse scratching auxiliary positioning device and method

Abstract

This invention discloses an adjustable reverse-scraping auxiliary positioning device and method. The adjustable reverse-scraping auxiliary positioning device includes a locking mechanism fixedly connected to a drilling machine spindle and a support member with adjustable length. The locking mechanism and the support member are detachably connected, facilitating assembly after adjustment and disassembly after processing. During part processing, the locking mechanism is fixedly connected to the drilling machine spindle; the length of the support member is adjusted, and the support member is placed on the locking mechanism; the drilling machine spindle is started, and when the adjustable positioning block reaches the drilling machine base, it restricts the upward displacement of the drilling machine spindle, thereby controlling the reverse-scraping depth of the drilling machine spindle and ensuring processing accuracy. Using this positioning device, the reverse-scraping processing accuracy can be effectively controlled, requiring only one processing operation to meet the processing accuracy requirements of the part, improving processing efficiency and product qualification rate. The device has a simple structure and principle, is easy to manufacture and use, and has good application value.

Description

Technical Field

[0001] This invention belongs to the field of shell parts processing, and specifically relates to an adjustable reverse-scraping auxiliary positioning device and method. Background Technology

[0002] To ensure installation quality, the connection holes of shell-type parts are typically designed with a reverse-scribing recess structure. Currently, there are two common methods for machining this structure: one is machining it on a drilling machine using a back-scribing tool by a fitter, and the other is machining it on an EDM machine using a dedicated electrode. However, using a dedicated electrode requires manufacturing electrodes of different sizes for different parts, resulting in limited versatility, rapid electrode wear, and high machining costs. Therefore, machining on a drilling machine with a back-scribing tool is generally preferred. However, machining on a drilling machine with a back-scribing tool still has the following drawbacks: First, due to the large gap in the drilling machine's dial and low precision, the part cannot be machined to the correct position in one pass according to the dial values, requiring repeated machining and measurement, leading to low machining efficiency. Second, due to repeated tool setting, once the allowance is less than 0.05mm, tool wear and work hardening on the part surface can easily cause the part to exceed tolerances when cutting again, resulting in a low pass rate.

[0003] To address the aforementioned issues, current methods employ a combination of a machine tool dial and a locating block to control the displacement of the drilling machine spindle. While this approach improves machining accuracy, it has limitations. In practical use, the back-grinding process involves the spindle working from bottom to top, requiring sufficient clamping space for the tool holder. This significantly shortens the locating block's travel, resulting in a very small machining range. Furthermore, the machine tool's clearance is relatively large, meaning the tolerance of parts machined using this back-grinding device can only be guaranteed to be 0.5mm, necessitating secondary machining to meet accuracy requirements. Additionally, in practical applications, back-grinding is required for various parts of different specifications. Current auxiliary tooling needs to be adjusted according to different part sizes to meet machining requirements, resulting in poor versatility.

[0004] Therefore, it is evident that existing reverse-scraping auxiliary tooling cannot guarantee that the machining accuracy requirements of parts can be met in a single machining operation. Summary of the Invention

[0005] To overcome the above-mentioned technical defects, the present invention provides an adjustable reverse-scrubbing auxiliary positioning device and method, which can solve the technical problem that existing reverse-scrubbing auxiliary tooling cannot guarantee that the machining accuracy requirements of parts can be met in just one machining operation.

[0006] To achieve the above objectives, the present invention employs the following technical content:

[0007] An adjustable anti-scraping auxiliary positioning device includes a locking mechanism;

[0008] The locking mechanism is fixedly connected to the drill press spindle;

[0009] The locking mechanism is equipped with a support member with an adjustable length;

[0010] One end of the support member is detachably connected to the locking mechanism, and the other end can abut against the drilling machine base during part processing;

[0011] The locking mechanism, in conjunction with the support member, can control the depth of the drill spindle's reverse stroke in the vertical direction.

[0012] Furthermore, the locking mechanism adopts a limiting seat; the limiting seat adopts an openable and closable structure, the limiting seat is sleeved on the drill spindle, and is locked and fixed by locking screws; the limiting seat is provided with a boss structure in the circumferential direction, which cooperates with the bottom of the support member.

[0013] Furthermore, the support member includes two symmetrically arranged adjustable positioning blocks; each adjustable positioning block includes a connector and an adjusting screw, the connector and the adjusting screw being connected by threads; the bottom of the connector has a positioning hole, and when machining the part, the boss structure is inserted into the positioning hole.

[0014] Furthermore, a fastening nut is fitted at the connection between the adjusting screw and the connector.

[0015] Furthermore, the adjusting screw is a screw with an M14×0.5 fine thread.

[0016] Furthermore, the end face of the adjusting screw that abuts against the drill press base is a smooth surface.

[0017] Furthermore, the connector adopts a cylindrical structure, and a hexagonal groove is formed on the outer wall of the cylindrical structure along the circumferential direction.

[0018] Furthermore, the adjustable positioning block is made of stainless steel.

[0019] A method of using the above-mentioned adjustable reverse-scrolling auxiliary positioning device includes:

[0020] Fix the part to be processed on the drilling machine worktable;

[0021] Connect and fix the locking mechanism to the drill spindle;

[0022] Adjust the length of the support component and place it on the locking mechanism;

[0023] Start the drill spindle. When the adjustable positioning block reaches the drill machine base, the reverse drilling depth of the drill spindle is controlled.

[0024] Furthermore, including:

[0025] Fix the part to be processed on the drilling machine worktable;

[0026] Fix the limit seat to the lower end of the drill press spindle and lock it in place with the locking screw;

[0027] Based on the part height, the depth of the anti-scratching recess, the length of the anti-scratching blade, and the installation position of the limit seat, the installation height of the adjustable positioning block is calculated, and the length of the adjustable positioning block is adjusted according to the installation height. After adjustment, it is placed on the boss of the limit seat.

[0028] Turn on the drill switch to rotate the drill spindle, and simultaneously adjust the drill spindle height to perform reverse rubbing. When the adjustable positioning block reaches the drill base, the reverse rubbing depth is qualified.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] This invention provides an adjustable reverse-scraping auxiliary positioning device. The device includes a locking mechanism fixedly connected to the drill spindle and an adjustable-length support component. The locking mechanism and the support component are detachably connected, allowing for easy adjustment of the support component's length according to different part specifications, facilitating assembly after adjustment and disassembly after processing. During part processing, the locking mechanism is fixedly connected to the drill spindle; the length of the support component is adjusted, and the support component is placed on the locking mechanism; the drill spindle is started, and when the adjustable positioning block reaches the drill machine base, it restricts the drill spindle's upward movement, thereby controlling the reverse-scraping depth and ensuring processing accuracy. This positioning device effectively controls the reverse-scraping processing accuracy, requiring only one processing operation to meet the part's processing accuracy requirements, improving processing efficiency and product qualification rate. The device has a simple structure and principle, is easy to manufacture and use, and has good application value.

[0031] Preferably, in this invention, the locking mechanism adopts an openable and closable limiting seat. The openable and closable design facilitates assembly with the drilling machine spindle. The locking screws are used to achieve fastening between the two, ensuring the reliability of the connection during processing. At the same time, a boss structure is provided in the circumferential direction of the limiting seat, which can cooperate with the bottom of the support, achieving a good positioning effect and improving assembly efficiency.

[0032] More preferably, in this invention, the support member adopts two symmetrically arranged adjustable positioning blocks. The adjustable positioning block includes two parts: a connector connected to the limiting seat, and an adjusting screw that cooperates with the connector to achieve length adjustment, which facilitates cooperation with the boss structure of the limiting seat. A positioning hole is opened at the bottom of the connector to facilitate positioning between the two.

[0033] More preferably, in order to ensure the stability of the adjustable length of the support and prevent it from shifting, a fastening nut is added at the connection between the adjusting screw and the connecting piece. In this way, the adjusted length of the support is ensured during the reverse scratching process, preventing it from shifting and ensuring the processing accuracy.

[0034] More preferably, in this invention, the connector adopts a cylindrical structure, and a hexagonal groove is provided on the outer wall of the cylindrical structure along the circumference. In order to adjust the length of the adjustable positioning block, an adjustment tool is required. The design of the hexagonal groove facilitates cooperation with the adjustment tool to achieve the adjustment of its length in order to meet the requirements of processing accuracy.

[0035] More preferably, in this invention, the adjusting screw is a screw with an M14×0.5 fine thread. On the one hand, the fine thread of the M14×0.5 fine thread screw allows for fine adjustment of the length, ensuring the requirements of machining accuracy. On the other hand, the use of a screw with a larger end face increases the contact area with the top drilling machine base, ensuring the positioning effect and thus ensuring machining accuracy.

[0036] More preferably, in this invention, the end face of the adjusting screw that abuts against the drill press base is a smooth surface. In this way, the smooth surface can ensure reliable contact with the drill press base, further ensuring machining accuracy.

[0037] More preferably, in this invention, the adjustable positioning block is made of stainless steel. On the one hand, during the processing, since the adjustable positioning block needs to repeatedly contact the drilling machine base, the use of stainless steel ensures that the adjustable positioning block has a certain strength and improves the service life of the device. On the other hand, in the actual use environment, it is impossible to ensure a completely dry environment. Stainless steel can improve corrosion resistance and ensure the accuracy of processing. Attached Figure Description

[0038] Figure 1 A schematic diagram of the anti-dimpled structure provided in an embodiment of the present invention; wherein, (a) is a schematic diagram of the anti-dimpled structure of the part; and (b) is a cross-sectional view of AA in (a);

[0039] Figure 2 This is a schematic diagram of the structure of an adjustable reverse-sweeping auxiliary positioning device provided in an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the limiting seat structure of an adjustable reverse-sweeping auxiliary positioning device provided in an embodiment of the present invention, wherein (a) is a side view and (b) is a top view;

[0041] Figure 4This is an assembly diagram of the limiting seat of an adjustable anti-scraping auxiliary positioning device provided in an embodiment of the present invention, wherein (a) is a structural diagram of the pad block; (b) is a schematic diagram of the locking screw; and (c) is a schematic diagram of the screw hole of the limiting seat.

[0042] Figure 5 This is a schematic diagram of the adjustable positioning block of an adjustable reverse-scrolling auxiliary positioning device provided in an embodiment of the present invention;

[0043] Figure 6 This is a schematic diagram of another structure of the adjustable positioning block of an adjustable reverse-scrolling auxiliary positioning device provided in an embodiment of the present invention;

[0044] Figure 7 This is a schematic diagram of the connector of the adjustable positioning block provided in an embodiment of the present invention; wherein (a) is a side sectional view; and (b) is a cross-sectional view along the AA direction in (a);

[0045] Figure 8 A schematic diagram of the adjusting screw of the adjustable positioning block provided in an embodiment of the present invention;

[0046] Figure 9 A schematic diagram of the fastening nut of the adjustable positioning block provided in an embodiment of the present invention;

[0047] Figure 10 This is a schematic diagram illustrating the calculation of the height of the adjustable positioning block during the assembly process of an adjustable reverse-scratching auxiliary positioning device provided in an embodiment of the present invention.

[0048] Figure 11 This is a schematic diagram of the assembly of the adjustable positioning block provided in an embodiment of the present invention.

[0049] Figure label:

[0050] 1. Drilling machine spindle; 2. Limit seat; 3. Adjustable positioning block; 4. Reverse scribing tool; 5. Adjusting screw; 6. Connecting part; 7. Locking screw; 8. Fastening nut; 9. Drilling machine base; 10. Reverse scribing tool; 11. Spacer block; 12. Parts. Detailed Implementation

[0051] To make the technical problems solved by the present invention, the technical solutions, and the beneficial effects clearer, the following specific embodiments provide a further detailed description of the present invention. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of the invention.

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0053] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0054] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0055] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0056] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0057] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0058] The present invention is described in further detail below with reference to the accompanying drawings:

[0059] Example

[0060] As mentioned in the background section, to ensure installation quality, the connection holes of shell-type parts are usually designed with a reverse groove structure, such as... Figure 1 As shown, see details. Figure 1 (a) and Figure 1 (b) For the processing of the reverse-dimpled structure, two methods are generally used:

[0061] 1) When a fitter uses a reverse-cutting cutter on a drilling machine, the following problems arise:

[0062] a) Low efficiency: Due to the large gap between the dials of the drilling machine and the low precision, the parts cannot be machined to the required position in one go according to the dial values. Repeated machining and measurement are required, resulting in low machining efficiency.

[0063] b. Low pass rate: Currently, the thickness tolerance of the dented part is generally required to be 0.1mm. Ordinary drilling machines have large clearances, and the spindle works from bottom to top during reverse denting, making it difficult to guarantee the dimensional tolerance. Moreover, due to repeated tool setting, after the allowance is less than 0.05mm, due to tool wear and work hardening on the part surface, subsequent tool setting can easily cause the part to exceed the tolerance, resulting in a low pass rate.

[0064] 2) The following problems exist when using special electrodes on an EDM machine:

[0065] a. Dedicated electrodes are not universal; different sizes of electrodes need to be processed for different parts; electrodes wear out quickly; and processing costs are high.

[0066] b. Electrical discharge machining has low efficiency.

[0067] c. Electrical discharge machining produces oxide scale, which is difficult to remove manually.

[0068] By comparison, it is generally found that machining is carried out on a drilling machine using a reverse scribing tool. However, due to the low precision of the machine tool's dial, repeated tool adjustments result in low efficiency and a low pass rate.

[0069] However, when using a back-grinding tool on a drilling machine, the displacement control of the drilling spindle is generally achieved by cooperating with a limit block on the machine tool's dial. While this method improves machining accuracy, it has certain limitations. In actual use, because back-grinding is a bottom-up operation of the spindle, and sufficient clamping space must be left for the tool holder, the stroke of the limit block is significantly shortened, resulting in a very small machining range. Furthermore, the machine tool's clearance is relatively large, meaning that the tolerance of parts machined using this back-grinding device can only be guaranteed to be 0.5mm, requiring secondary machining to meet the accuracy requirements. In addition, in practical use, back-grinding is required for various parts of different specifications. Current auxiliary tooling needs to be adjusted according to different parts specifications to meet machining requirements, resulting in poor versatility.

[0070] To achieve the above objectives, this embodiment provides an adjustable reverse-scraping auxiliary positioning device and method. Through the cooperation of the locking mechanism and the support member, the displacement of the drill spindle is precisely limited and the reverse-scraping depth is precisely adjusted, thereby meeting the requirements of reverse-scraping machining accuracy.

[0071] The specific structure of this embodiment will be described in detail below with reference to the accompanying drawings:

[0072] like Figure 2 As shown, this embodiment provides an adjustable reverse-sweeping auxiliary positioning device, including:

[0073] The lower end of the drill spindle 1 is connected to a locking mechanism. The locking mechanism is equipped with a support member with an adjustable length. One end of the support member is detachably connected to the locking mechanism, and the other end can abut against the drill machine base 9 during part processing.

[0074] The working principle of this embodiment is as follows: the locking mechanism cooperates with the support member, and when the drill spindle 1 reverses upward, it can control the reverse depth of the drill spindle 1 in the vertical direction.

[0075] Specifically, such as Figure 3 As shown, the locking mechanism here uses limit seat 2, see details. Figure 3 (a) and (b) The limiting seat 2 adopts an openable and closable structure. The openable and closable setting facilitates the assembly with the drill spindle 1. The locking screw 7 is used to achieve the fastening between the two and ensure the reliability of the connection during the processing. At the same time, a boss structure is provided in the circumferential direction of the limiting seat 2, which can cooperate with the bottom of the support and achieve a good positioning effect, thus improving the assembly efficiency.

[0076] like Figure 4 As shown, in order to achieve better stability, a pad 11 is also provided on the locking screw 7, making the locking effect more stable and reliable.

[0077] In use, open the limit seat 2 and attach it to the lower end of the drill spindle 1. Use the locking screw 7 to pass through the pad 11 to lock the limit seat 2, so that the limit seat 2 and the drill spindle 1 are assembled.

[0078] like Figure 5 As shown, the adjustable positioning block 3 mainly consists of two parts, including an adjusting screw 5 and a connecting piece 6. The top of the connecting piece 6 is connected to the adjusting screw 5 by a thread, which can realize the adjustment of length (height) and facilitate the cooperation with the boss structure of the limiting seat 2. A positioning hole is opened at the bottom of the connecting piece 6 to facilitate quick and effective positioning between the two.

[0079] During use, the machining dimensions are ensured by adjusting the height of the adjusting screw 5. After machining is completed, the adjustable positioning block 3 can be removed to easily disassemble and assemble part 12. At the same time, the Z-axis travel record is retained.

[0080] The adjusting screw 5 here uses an M8×1.25 coarse thread. When using this positioning device to process the first part 12, it is necessary to make continuous adjustments. After a qualified product is produced, the height of the adjusting screw is determined before processing other parts.

[0081] Because the end face area of ​​adjusting screw 5 is small, it is easy to cause misalignment during positioning. Since no locking structure is designed, the screw may be automatically pushed after multiple collisions, causing Z-direction displacement deviation, which reduces the accuracy and makes it difficult to guarantee the processing requirements of the parts.

[0082] To address the aforementioned issues, this embodiment further improves the adjustable positioning block 3, such as... Figure 6 , Figure 7 and Figure 8 As shown, another structure is provided, specifically: a fastening nut 8 is added at the connection between the adjusting screw 5 and the connector 6, as shown. Figure 9 As shown, this ensures the adjusted length of the adjustable positioning block 3 during the reverse marking process, preventing the screw from being automatically pushed away after multiple collisions, thus avoiding Z-axis displacement deviation and ensuring machining accuracy. Furthermore, the adjusting screw uses an M14×0.5 fine-pitch thread. The M14×0.5 fine-pitch thread increases the contact area, allowing for fine length adjustments to maintain machining accuracy. Additionally, the larger end face increases the contact area with the top drilling machine base, ensuring effective positioning and thus guaranteeing machining accuracy.

[0083] In addition, in this embodiment, the end face of the adjusting screw 5 that abuts against the drill press base 9 is a smooth surface. In this way, the smooth surface can ensure reliable and sufficient contact with the drill press base, further ensuring the machining accuracy.

[0084] In addition, in this embodiment, the connector 6 adopts a cylindrical structure. A hexagonal groove is provided on the outer wall of the cylindrical structure along the circumference. In order to adjust the length of the adjustable positioning block 3, an adjustment tool is required. The design of the hexagonal groove facilitates the cooperation with the adjustment tool to achieve the adjustment of its length in order to meet the requirements of processing accuracy.

[0085] It should be noted that before assembling the adjustable positioning block 3 with the limiting seat 2, the length that the adjustable positioning block 3 needs to be adjusted is calculated. In order to ensure that the heights of the two adjustable positioning blocks 3 are consistent, a Swiss TRIMOS V9-400 / 700 / 1100 two-dimensional digital display height gauge can be used to accurately measure the adjustable positioning block 3. On the one hand, this ensures the height consistency of the adjustable positioning block 3 and ensures the accuracy of the reverse scratching process; on the other hand, it facilitates fine-tuning of the height, which also ensures the final accuracy of the reverse scratching process.

[0086] Furthermore, in this embodiment, the adjustable positioning block 3 is made of stainless steel. On the one hand, during the processing, since the adjustable positioning block needs to repeatedly contact the drilling machine base, the use of stainless steel ensures that the adjustable positioning block has a certain strength and improves the service life of the device. On the other hand, in the actual use environment, it is impossible to ensure a completely dry environment. Stainless steel can improve corrosion resistance and ensure the accuracy of processing.

[0087] This embodiment provides an adjustable reverse-scrolling auxiliary positioning device, and its specific usage method is as follows:

[0088] Fix the part to be processed on the drilling machine worktable;

[0089] Connect and fix the locking mechanism to the drill spindle 1;

[0090] Adjust the length of the support component and place it on the locking mechanism;

[0091] Start the drill spindle 1. When the adjustable positioning block 3 reaches the drill base 9, the reverse drilling depth of the drill spindle 1 is controlled.

[0092] Combination Figure 10 As shown, the more specific steps are as follows:

[0093] (1) Place part 12 on the worktable of a conventional drilling machine and fix it using a combination fixture.

[0094] (2) Fix the limit seat 2 to the lower end of the drill spindle 1 and lock it with the locking screw 7.

[0095] (3) Install the bar of the reverse scratching cutter 10 on the drilling machine, so that the bar passes through the hole of the part 12 to be reverse scratched, and install the reverse scratching cutter head.

[0096] (4) Calculate the height of the adjustable positioning block according to the height of the part, the depth of the anti-scraping groove, the length of the anti-scraping knife, and the installation position of the limit seat. After adjusting the two adjustable positioning blocks 3, place them on the boss of the limit seat 2.

[0097] Here, as Figure 10 As shown, calculate the height L of the adjustable positioning block 3; the specific calculation formula is as follows: Here, we take the reverse marking process of a certain part as an example:

[0098] L = H - L1 - L2 - L3 - L4 - (H1 - H2) = 590 - 30 - 33 - 224 - 50 - (180 - 9) = 82mm. Where: H is the total height of the top of the drilling machine from the worktable, L1 is the thickness of the limit seat, L2 is the distance between the lower end face of the limit seat and the lower end face of the main spindle, L3 is the distance between the lower end face of the main spindle and the lower end face of the tool holder, L4 is the tool extension length minus the tool tip thickness, H1 is the total height of the part housing, and H2 is the final thickness of the dent.

[0099] Preferably, to facilitate the calculation of the height L of the adjustable positioning block 3, improve calculation efficiency and subsequent reverse marking processing efficiency, the following can be adopted: Figure 11 The assembly method shown also adjusts the structure of the limiting seat 2, and a stepped structure that mates with the drill spindle 1 is provided on the bottom inner wall. The specific calculation is as follows:

[0100] L=H-(L1-L2)-L3-L4-(H1-H2)=590-(30-5)-224-50-(180-9)=120mm.

[0101] Where: H is the total height of the top of the drilling machine from the worktable, L1 is the thickness of the limit seat, L2 is the distance from the lower end face of the limit seat to the lower end face of the main spindle, L3 is the distance from the lower end face of the main spindle to the lower end face of the tool holder, L4 is the tool extension length minus the tool head thickness, H1 is the total height of the part housing, and H2 is the final thickness of the dent.

[0102] With this assembly method, when installing the limit seat 2, it can be directly abutted against the end face of the machine tool spindle. L1-L2=25mm is a fixed value, which makes it convenient to measure and calculate the height of the adjustable positioning block 3.

[0103] (5) Turn on the drill switch to rotate the drill spindle 1. Use the drill handle to adjust the height of the drill spindle 1 and perform reverse scribing. When the adjustable positioning block 3 reaches the top of the drill, i.e. the drill base 9, the reverse scribing depth is qualified, and the tolerance of the parts processed in this way can be guaranteed to be within 0.1mm.

[0104] (6) Using the drill handle, lower the height of the drill spindle 1, remove the adjustable positioning block 3, remove the cutting head of the reverse slicing cutter 4, raise the drill spindle 1, lift out the cutting bar of the reverse slicing cutter 4, remove part 12, replace the next part 12, and process the next part according to the above process.

[0105] After the first part is processed using this device, the height of the adjustable positioning block 3 is already reserved, so subsequent parts can be processed to the required size in one go without leaving any allowance for repeated processing, which improves processing efficiency and ensures the part qualification rate.

[0106] For multiple machining areas on a single machining surface of the same part, multiple adjustable positioning devices can be used for machining. All reverse-scratched areas can be machined in one positioning, reducing the need for repeated clamping and alignment of the part and significantly improving machining efficiency.

[0107] Furthermore, since this adjustable reverse-scratching auxiliary positioning device has an adjustment function, it can also meet the processing of parts of different specifications. It is only necessary to recalculate the installation height according to step (4) and complete the assembly according to the calculated installation height.

[0108] This embodiment provides an adjustable reverse-scratching auxiliary positioning device and its usage method. By using different adjustable positioning blocks, the drilling machine can efficiently process reverse-scratching, solving the reverse-scratching processing of 90% of shell-type parts, improving processing efficiency and pass rate, reducing production costs when using ordinary drilling equipment, achieving a part pass rate of over 98%, and saving 70% of operation time.

[0109] In summary, this embodiment provides an adjustable reverse-scrubbing auxiliary positioning device and method, which has the following advantages compared with existing processing auxiliary devices:

[0110] This adjustable reverse-scraping auxiliary positioning device includes a locking mechanism fixed to the drill spindle and an adjustable-length support component. The locking mechanism and the support component are detachably connected, allowing for easy adjustment of the support component's length to accommodate different part specifications, and facilitating assembly after adjustment and disassembly after machining. During part machining, the locking mechanism is fixed to the drill spindle; the length of the support component is adjusted, and the support component is placed on the locking mechanism; the drill spindle is started, and when the adjustable positioning block reaches the drill machine base, it restricts the drill spindle's upward movement, thereby controlling the reverse-scraping depth and ensuring machining accuracy. This positioning device effectively controls the reverse-scraping machining accuracy, requiring only one machining operation to meet the part's machining accuracy requirements, improving machining efficiency and product qualification rate. The device has a simple structure and principle, is easy to manufacture and use, and has good application value.

[0111] The above embodiments are merely one of the implementation methods for achieving the technical solution of the present invention. The scope of protection claimed by the present invention is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention.

Claims

1. An adjustable reverse-sweeping auxiliary positioning device, characterized in that, Including locking mechanisms; The locking mechanism is fixedly connected to the drill spindle (1); The locking mechanism is equipped with a support member with an adjustable length; One end of the support member is detachably connected to the locking mechanism, and the other end can abut against the drill press base (9) during part processing; The locking mechanism cooperates with the support member to control the reverse drilling depth of the drill spindle (1) in the vertical direction; The locking mechanism adopts a limiting seat (2); the limiting seat (2) adopts an openable structure, the limiting seat (2) is sleeved on the drill spindle (1) and locked and fixed by locking screws (7); the limiting seat (2) is provided with a boss structure in the circumferential direction, which cooperates with the bottom of the support member; The support includes two symmetrically arranged adjustable positioning blocks (3); each adjustable positioning block (3) includes a connector and an adjusting screw, the connector and the adjusting screw are connected by threads; the bottom of the connector has a positioning hole, and the boss structure is inserted into the positioning hole when processing the part.

2. The adjustable reverse-sweeping auxiliary positioning device according to claim 1, characterized in that, A fastening nut (8) is fitted at the connection between the adjusting screw and the connector.

3. The adjustable reverse-sweeping auxiliary positioning device according to claim 1, characterized in that, The adjusting screw is an M14×0.5 fine thread screw.

4. The adjustable reverse-sweeping auxiliary positioning device according to claim 1, characterized in that, The end face of the adjusting screw that abuts against the drill press base (9) is a smooth surface.

5. The adjustable reverse-sweeping auxiliary positioning device according to claim 1, characterized in that, The connector adopts a cylindrical structure, and a hexagonal groove is formed on the outer wall of the cylindrical structure along the circumferential direction.

6. The adjustable reverse-sweeping auxiliary positioning device according to claim 1, characterized in that, The adjustable positioning block (3) is made of stainless steel.

7. A method of using the adjustable reverse-scrolling auxiliary positioning device according to claim 1, characterized in that, include: Fix the part to be processed on the drilling machine worktable; Connect and fix the locking mechanism to the drill spindle (1); Adjust the length of the support component and place it on the locking mechanism; Start the drill spindle (1). When the adjustable positioning block (3) reaches the drill base (9), the reverse drilling depth of the drill spindle (1) is controlled.

8. The method of use according to claim 7, characterized in that, include: Fix the part to be processed on the drilling machine worktable; The limit seat (2) is fixed to the lower end of the drill spindle (1) and locked by the locking screw (7); Based on the part height, the depth of the anti-scratching groove, the length of the anti-scratching blade, and the installation position of the limiting seat (2), the installation height of the adjustable positioning block (3) is calculated, and the length of the adjustable positioning block (3) is adjusted according to the installation height. After adjustment, it is placed on the boss of the limiting seat (2). Turn on the drill switch to rotate the drill spindle (1) and simultaneously operate the drill spindle (1) height to perform reverse rubbing. When the adjustable positioning block (3) hits the drill base (9), the reverse rubbing depth is qualified.

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