Novel screw tap machining method

Abstract

The invention relates to the technical field of screw tap machining, in particular to a novel screw tap machining method. The method comprises the steps that firstly, a long-strip-shaped raw material bar is cut off according to the blank length needed by a single screw tap, and a thick bar is formed; after the center is calibrated, the outer circle of the thick rod is uniformly polished to the diameter size required by the blade part; the two ends of the thick rod are sharpened, and then the handle portion, the polished handle and the receding portion on the surface of the thick rod are machined and polished to form the accurate size needed by the handle portion, the polished handle and the receding portion; and threads of the blade part on the thick rod are machined. According to the method, the process of uniformly grinding the larger diameter required by the blade part and then machining the small-diameter parts such as the polished handle and the clearance part is simplified into one-way machining from the large diameter of the blade part to the small diameter of the polished handle and the clearance part, the number of procedures and the equipment adjusting frequency are greatly reduced, and the production period is shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tap processing, in particular to a novel tap processing method. BACKGROUND

[0002] In the tap processing process of the existing equipment, a cylindrical raw material rod needs to be initially ground to a required original size, and then the blade part, the shank part and the intermediate connecting clearance of the tap are coarsely processed under the original size to preliminarily process each part to the final required diameter, and then the blade part is finely processed to process the final required thread, but the processing steps are very troublesome and each part needs to be individually coarsely processed.

[0003] Therefore, a novel tap processing method is proposed to solve the problems in the above. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a novel tap processing method, comprising the following steps: Step one: cut the long raw material rod into a rough rod according to the required blank length of a single tap; After the center is calibrated, the outer circle of the rough rod is uniformly polished to the required diameter size of the blade part; The two ends of the rough rod are sharpened, and then the shank part and the clearance part on the surface of the rough rod are processed and polished to form the required accurate size of the shank part and the clearance part; Process the thread of the blade part on the rough rod.

[0005] As a further improvement, comprising the following steps: Step two: insert the tap processed in step one into an external polishing device for fixation, and start the polishing device to finely process the semi-finished tap, the polishing device comprising a support frame, a connecting rod arranged at the lower end of the support frame, the connecting rod having a plurality of connecting rods, a connecting sleeve being inserted at the lower end of the connecting rod, and a strong magnetic block being arranged between the connecting sleeve and the connecting rod; the semi-finished tap is adsorbed and fixed in the connecting sleeve by the strong magnetic block.

[0006] As a further improvement, further comprising: The lower end surface of the connecting rod is provided with a connecting head, the connecting head is magnetically connected with the strong magnetic block, the strong magnetic block is magnetically connected with the inside of the connecting sleeve, and the connecting head is inserted into the inside of the connecting sleeve; A tap body is arranged below the connecting sleeve, the tap body is inserted into the inside of the connecting sleeve, and the tap body is magnetically connected with the lower surface of the strong magnetic block; The upper half of the connecting sleeve is provided with a placing groove, and the lower half of the connecting sleeve is provided with a plug-in groove.

[0007] As a further improvement, the placing groove is square, the strong magnetic block is square, and the connecting head is square.

[0008] As a further improvement, the strong magnetic block is provided with a plug-in taper groove, and the plug-in taper groove is tapered. The plug-in head penetrates the plug-in groove and is inserted into the plug-in taper groove.

[0009] As a further improvement, the polishing process is realized by a polishing device body, the polishing device body is provided with a driving motor for driving a driving wheel to rotate on the polishing device body, the driving wheel is rotatably connected with a contact rod at the center of the driving wheel, the driving wheel is fixedly connected with a limiting rod on the side wall, the limiting rod is provided with a clamping groove, the polishing device body is provided with a limiting structure, the limiting structure is rotatably connected with a receiving rod, and the contact rod and the receiving rod are used for limiting and fixing the two ends of the tap.

[0010] Compared with the prior art, the present application provides a new tap processing method, which has the following advantages: 1、The present application clamps the handle of the tap by the jig, avoids scratches on the first area and the second area during polishing, and needs secondary polishing.

[0011] 2、The present application polishes the thread of the blade part after polishing the handle and the hollow part, reduces the process of polishing the blade part, sets the size of the coarse die as the size required by the thread of the blade part, and saves the processing steps.

[0012] 3、Based on the magnetic attraction of the strong magnetic block itself, the connecting head, the strong magnetic block, the connecting sleeve and the tap body can be positioned and connected, and based on the magnetic attraction of the connection, the tap body and the connecting sleeve can be adjusted and replaced, improving the convenience of replacement.

[0013] 4、Through the magnetic attraction connection of the plug-in connector and the plug-in taper groove, the upper half of the tap body is magnetically attracted and fixed, which can achieve the effect of fixing the whole tap body. Compared with the traditional clamping method of the whole tap body, the tap body can be polished and formed once, preventing the clamping part from being effectively polished.

[0014] 5、By setting the shape of the plug-in taper groove and the plug-in connector to be conical and fit each other, the connection area of the plug-in connector and the plug-in taper groove is increased, ensuring the stability of the magnetic attraction connection of the tap body.

[0015] 6、By setting the plug-in connector and the strong magnetic block to be the same square structure, the contact area of the plug-in connector and the strong magnetic block is maximized, ensuring the stability and reliability of the magnetic attraction connection when the plug-in connector is used in different forms. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the tap structure of the present application; Figure 2 It is a schematic diagram of the polishing device body structure of the present application; Figure 3 It is a schematic diagram of the limiting rod structure of the present application; Figure 4 It is a comparison diagram of tap processing and existing technology tap processing of the present application; Figure 5 It is a schematic diagram of the polishing equipment structure in the present application; Figure 6 It is a schematic diagram of the whole structure of the connecting sleeve connection method in the present application; Figure 7 It is a schematic diagram of the first connecting sleeve structure of the present application; Figure 8 It is a schematic diagram of another connecting sleeve structure of the present application.

[0017] In the figure: 1, support frame; 2, connecting rod; 3, connecting head; 4, strong magnetic block; 401, plug-in taper slot; 5, connecting sleeve; 501, placing groove; 502, plug-in slot; 6, tap body; 601, plug; 7, shank; 8, light handle; 9, clearance; 10, blade; 11, connecting sleeve; 12, magnet; 13, insertion hole; 14, polishing device body; 15, driving wheel; 16, contact rod; 17, limiting rod; 18, limiting structure; 19, receiving rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Embodiment one: Please refer to Figure 1 and Figure 6 A new tap machining method in the embodiment is used to machine the tap shown in Figure 1 The structural feature is that the sizes of the light handle 8 and the clearance 9 are designed to be smaller than the size of the blade 5, i.e., the diameters of the light handle 8 and the clearance 9 are smaller than the diameter of the blade 10. Under the premise of the process size of the product, when machining the tap, the following steps are included. Step one: cut the long raw material bar according to the required blank length of a single tap to form a rough bar; After centering, uniformly grind the outer circle of the rough bar to the required diameter size of the blade 10; Machine the threads of the blade 10 on the rough bar; Grind the tips of both ends of the rough bar, and then machine and polish the shank 7 and the light handle 8 and the clearance 9 area on the surface of the rough bar to form the required accurate size of the shank 7 and the light handle 8 and the clearance 9; Of course, the tips of both ends of the rough bar can be ground first, and then the shank 7 and the light handle 8 and the clearance 9 area on the surface of the rough bar are machined and polished to form the required accurate size of the shank 7 and the light handle 8 and the clearance 9, and then the threads of the blade 10 on the rough bar are machined.

[0020] The process discards the traditional mode of rough machining each part one by one, and through the process of first uniformly grinding the larger diameter required by the blade part, then machining the small diameter parts such as the light handle and the avoidance part, the structure advantage of smaller size of the light handle and the avoidance part is used to simplify the repeated rough machining program from the original size to the target size into one-way machining from the large diameter of the blade part to the small diameter of the light handle and the avoidance part. This optimization greatly reduces the number of processes and the frequency of equipment adjustment, shortens the production cycle, is more suitable for batch production scenes, and effectively improves the overall manufacturing efficiency of the tap.

[0021] Secondly, the process takes "calibrating the center and then uniformly grinding the blade diameter" as the core reference, and the subsequent machining of the handle 7, the light handle 8 and the avoidance part 9 is the accurate trimming from the large diameter of the blade part to smaller sizes. This uniform reference and from large to small machining logic can maximize the avoidance of reference switching errors and size accumulation deviations caused by traditional separate rough machining of multiple parts, effectively guarantee the coaxiality and size matching of each part of the tap (such as the transmission matching precision of the handle and the equipment, the gap control precision of the avoidance part, and the basic precision of the blade thread machining, etc.), significantly improve the precision and consistency of the product, and further ensure the stability of the tap in use (such as the stability of thread machining and the reliability of cutting force transmission).

[0022] Further, please refer to Figure 4 and Figure 5 , in step one, the polishing process is realized by a polishing device body 14, the polishing device body 14 is provided with a driving motor for driving the driving wheel 15 to rotate on the polishing device body 14, the driving wheel 15 is fixedly provided with a contact rod 16 at the center, the contact rod 16 is only used to abut against the tap without rotating the tap, the driving wheel 15 is fixedly connected with a limiting rod 17, the polishing device body 14 is provided with a limiting structure 18, the limiting structure 18 is rotatably connected with a receiving rod 19, the contact rod 16 and the receiving rod 19 are used to limit and fix the tap at both ends; as Figure 4 , the limiting rod 17 is provided with a clamping groove on the vertical part for limiting and fixing the tap, and under the rotation of the driving wheel 15, the tap is rotated together with the contact rod 16 as the center axis, and the limiting rod 17 is used to drive the tap to rotate, when the tap is fixed on the contact rod 16, the handle 7 of the tap is limited in the clamping groove and cannot move, the limiting rod 17 can transmit force to the tap when rotating, and since the limiting rod 17 contacts with the handle 7 of the tap and does not contact with the surface of the light handle 8 and the avoidance part 9, it does not produce scratch effect on the surface of the light handle 8 and the avoidance part 9.

[0023] When the handle 7 of the tap is in contact with the contact rod 16, the handle 7 is inserted into the clamping groove in the limiting rod 17, the driving wheel 15 passes through the limiting rod 17 and drives the tap to rotate, and each part of the tap is processed in sequence by the grinding wheel on the grinding equipment, which can effectively cooperate with step one to efficiently complete Figure 4 The first polishing area and the second polishing area of the present application are quickly and completely ground, and after the processing is completed, the tap is transferred by the mechanical arm beside the grinding equipment, and then the tap to be processed is moved to the contact rod 16 area for continuous processing; the entire step one cooperates with the polishing device body 14, and all actions such as rough grinding and thread tapping can be completed in step one, and finally all other parts are once ground by the polishing device body 14, so that the size processing of all parts of the tap can be completed, and the overall work efficiency is further greatly improved; in addition, the tap can be quickly installed and disassembled, and scratches on the surface of other parts of the tap during clamping and fixing of the tap are avoided, and secondary processing and polishing are avoided.

[0024] The initial position of the mechanical arm is located between the finished product temporary storage area and the material rack to be processed, and the end is equipped with a double-station pneumatic clamp (compatible with tap handle / tail clamping); after the grinding equipment completes the current tap processing, a processing completion signal is sent to the mechanical arm control system; the mechanical arm moves to the grinding station along the preset path, the clamp is positioned to the tap, the pneumatic clamp closes to clamp the tap, the receiving rod 19 driven by the limiting structure 18 automatically retracts to release the tap, the mechanical arm vertically lifts the tap to disengage the clamping groove of the limiting rod 17, and the mechanical arm moves the finished tap to the placement area; The mechanical arm grabs a new tap from the material rack to be processed, accurately inserts the tap handle 7 into the clamping groove of the limiting rod 17, automatically moves forward to tightly press the tap tail of the receiving rod 19, and retreats to the safe position after releasing the clamp to send a feeding completion signal.

[0025] Further, please refer to Figure 5 - Figure 8 In the embodiment, step two: the tap processed in step one is inserted into the external polishing equipment as shown in Figure 5 for fixing, and the polishing equipment is turned on to grind and process the semi-finished tap, the polishing equipment includes a support frame 1 and a connecting rod arranged at the lower end of the support frame, the connecting rod has a plurality of connecting rods, the connecting rod is inserted into a connecting sleeve at the lower end of the connecting rod, and a strong magnet block is arranged between the connecting sleeve and the connecting rod; the polishing equipment adsorbs and fixes the semi-finished tap in the connecting sleeve through the strong magnet block. After polishing in step four, the tap is pulled down to separate the tap from the magnet 12 and the sleeve 11, and the transfer of the tap can be completed, and the transfer time of the tap and the polishing effect are improved.

[0026] After the tap completes the above-mentioned pretreatment, the polishing equipment for subsequent polishing and polishing of the tap is provided in the embodiment, and the polishing equipment comprises a support frame 1, the upper end of the support frame 1 is used for being mounted in the interior of the polishing equipment, and the jig as a whole is located in the interior of the polishing equipment, and a connecting rod 2 is arranged at the lower end of the support frame 1, the connecting rod 2 is provided with a plurality of connecting sleeves 5, the connecting sleeves 5 are inserted into the connecting rod 2, and a strong magnetic block 4 is arranged between the connecting sleeve 5 and the connecting rod 2; A connecting head 3 is arranged on the lower end surface of the connecting rod 2, the connecting head 3 is magnetically connected with the strong magnetic block 4, the strong magnetic block 4 is magnetically connected with the interior of the connecting sleeve 5, and the connecting head 3 is inserted into the interior of the connecting sleeve 5; A tap body 6 is arranged below the connecting sleeve 5, the tap body 6 is inserted into the interior of the connecting sleeve 5, and the tap body 6 is magnetically connected with the lower surface of the strong magnetic block 4 after passing through an insertion slot 502; The driving source is mounted on the upper end of the support frame 1, the device has driving and rotating the single connecting rod 2, rotating the upper half as a whole, and supporting the height movement of the device, the driving mode is a known technology in the field, and therefore, is not described in detail in the embodiment, and the polishing material is placed in the polishing cylinder below the tap, so that the tap body 6 is uniformly and stably polished; Based on the magnetic attraction of the strong magnetic block 4, the connecting head 3, the strong magnetic block 4, the connecting sleeve 5 and the tap body 6 are positioned and connected, based on the magnetic attraction of the connection, the tap body 6 and the connecting sleeve 5 are convenient to adjust and replace, the convenience of replacement is improved, the structure contacts the minimum area of the tap body as much as possible, and it is ensured that the front rough grinding, fine grinding and thread part are not damaged due to clamping.

[0027] A placing groove 501 is arranged in the upper half of the interior of the connecting sleeve 5 and is used for placing the strong magnetic block 4 of different structures to cooperate with adsorbing the tap body 6 of different shapes, and an insertion slot 502 is arranged in the lower half of the interior of the connecting sleeve 5; As Figure 8 In the embodiment, the placing groove 501 is a square structure, the strong magnetic block 4 is of the same structure as the placing groove 501, and the connecting head 3 is of the same structure as the strong magnetic block 4; As Figure 7 In the embodiment, an insertion taper groove 401 is arranged in the interior of the strong magnetic block 4, the insertion taper groove 401 is of a taper structure, and an insertion head 601 of the tap body 6 is of a taper structure after chamfering; The insertion head 601 penetrates the insertion slot 502 and is inserted into the interior of the insertion taper groove 401; The connecting sleeve 5 has a placement groove 501 inside, which provides a placement space for the strong magnetic block 4. The insertion groove 502, which matches the diameter of the tap 6, provides a guide support for the tap 6 and the insertion connector 601, so that the insertion connector 601 and the insertion tapered groove 401 are inserted and positioned. By setting the shape of the insertion tapered groove 401 and the insertion connector 601 to be a tapered shape that fits each other, the connection area between the insertion connector 601 and the insertion tapered groove 401 is increased, ensuring the stability of the magnetic connection of the tap 6. By magnetically connecting the connector 601 and the taper groove 401, the upper half of the tap 6 can be magnetically fixed, thus achieving the effect of fixing the tap 6 as a whole. Compared with the traditional method of clamping most of the tap 6 and then grinding it in stages, this clamping method only needs to fix the top of the tap to achieve stable fixing and grind the tap 6 in one go, which improves efficiency and ensures stability during grinding.

[0028] The strong magnetic block 4 has an integral square structure. The upper half of the tap 6 is ground into a square structure of the connector 601. The connector groove 502 has the same structure as the connector 601. The connector 601 passes through the connector slot 502, and the upper surface of the connector 601 is magnetically connected to the lower surface of the strong magnet 4. By setting the connector 601 and the strong magnet 4 to the same square structure, the contact area between the connector 601 and the strong magnet 4 is maximized when the tap 6 is inserted into the connecting sleeve 5, ensuring that the magnetic connection is stable and reliable when the connector 601 is used in different configurations.

[0029] The installation method, connection method, or setting method disclosed in this embodiment are all common mechanical connections. Any connection method that can achieve its beneficial effect can be implemented, so the specific structural composition and working principle will not be described in detail in this embodiment.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover 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 one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous changes, modifications, substitutions and variations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A novel tap machining method, characterized in that, Includes the following steps; Step 1: Cut the long strip of raw material into rough bars according to the blank length required for a single tap; After calibrating the center, the outer circle of the coarse bar is uniformly ground to the required diameter of the cutting edge (10); Machining the thread on the cutting edge (10) of the rough bar; The two ends of the thick rod are sharpened, and then the shank (7), smooth shank (8), and clearance (9) areas on the surface of the thick rod are processed and polished to form the required precise dimensions of the shank (7), smooth shank (8), and clearance (9).

2. The novel tap machining method according to claim 1, characterized in that: Includes the following steps; Step 2: Insert the tap processed in Step 1 into an external polishing device for fixation, and turn on the polishing device to perform fine grinding on the semi-finished tap. The polishing device includes a support frame (1) and a connecting rod (2) set at the lower end of the support frame (1). There are several connecting rods (2), and a connecting sleeve (5) is inserted into the lower end of the connecting rod (2). A strong magnetic block (4) is set between the connecting sleeve (5) and the connecting rod (2). The polishing device uses the strong magnetic block (4) to attract and fix the semi-finished tap in the connecting sleeve (5).

3. The novel tap machining method according to claim 2, characterized in that, Further includes; The lower end face of the connecting rod (2) is provided with a connector (3), the connector (3) is magnetically connected to the strong magnetic block (4), the strong magnetic block (4) is magnetically connected to the inside of the connecting sleeve (5), and the connector (3) is inserted into the inside of the connecting sleeve (5). A tap (6) is provided below the connecting sleeve (5). The tap (6) is inserted into the interior of the connecting sleeve (5). The tap (6) is magnetically connected to the lower surface of the strong magnetic block (4). The upper part of the connecting sleeve (5) is provided with a placement groove (501), and the lower part of the connecting sleeve (5) is provided with a insertion groove (502). The placement groove (501) and the insertion groove (502) are connected.

4. The novel tap machining method according to claim 3, characterized in that: The placement slot (501) has a square structure, the strong magnetic block (4) has the same structure as the placement slot (501), and the connector (3) has the same structure as the strong magnetic block (4); the upper half of the tap (6) is ground to form a square-shaped plug (601), the insertion slot (502) has the same structure as the plug (601); the plug (601) and the insertion slot (502) are connected through each other, and the upper surface of the plug (601) is magnetically connected to the lower surface of the strong magnetic block (4).

5. A novel tap machining method according to claim 3, characterized in that: The strong magnetic block (4) has a through-hole insertion cone groove (401) inside, the insertion cone groove (401) has a cone-shaped structure, and the upper half of the tap (6) has a chamfered insertion connector (601) with a cone-shaped structure. The connector (601) passes through the connector groove (502), and the connector (601) is inserted into the connector cone groove (401).

6. The novel tap machining method according to claim 1, characterized in that: The polishing process is achieved through a polishing device body (14). The polishing device body (14) is equipped with a drive motor to drive the drive wheel (15) to rotate on the polishing device body (14). A contact rod (16) is rotatably connected to the center of the drive wheel (15). A limiting rod (17) is fixedly connected to the side wall of the drive wheel (15). A slot is provided on the limiting rod (17). A limiting structure (18) is provided on the polishing device body (14). A bearing is rotatably connected to the limiting structure (18). The connecting rod (19), contact rod (16) and receiving rod (19) are used to restrict and fix the two ends of the tap. When the shank (7) of the tap contacts the contact rod (16), one end of the shank (7) is inserted into the slot in the limiting rod (17). The drive wheel (15) drives the tap to rotate through the limiting rod (17). The tap is processed by the grinding wheel on the fine grinding equipment. After the processing is completed, the tap is transferred by the mechanical arm next to the fine grinding equipment. Then the tap to be processed is moved to the area of ​​the contact rod (16) for further processing.

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