Tapping jig

Abstract

The utility model provides a tapping jig. The tapping jig comprises a mounting plate, and at least one fixing mechanism, at least one first tapping mechanism and at least one second tapping mechanism which are arranged on the mounting plate, the fixing mechanism comprises a placing position and a pressing piece; the placing position is used for placing a product needing to be tapped, and the pressing piece can move towards the product needing to be tapped so as to press the product needing to be tapped; a first metal sensor is arranged on the placing position and is used for detecting whether a product needing to be tapped is placed in place or not; the first tapping mechanism is used for tapping a product needing to be tapped in the vertical direction; and the second tapping mechanism is used for tapping the product needing to be tapped in the horizontal direction. According to the tapping jig, at least one first tapping mechanism is arranged for tapping the product needing to be tapped in the vertical direction, at least one second tapping mechanism is arranged for tapping the product needing to be tapped in the water direction, the tapping jig can conduct tapping on two faces or multiple faces at the same time, the machining efficiency is greatly improved, and the labor cost is saved.

Description

Technical Field

[0001] This application belongs to the technical field of hardware processing, and more specifically, it relates to a tapping fixture. Background Art

[0002] Tapping is an important process in the processing of hardware parts. Tapping is used to process threaded hole structures on products. However, during the forming process of stamping hardware parts, it is often encountered that two or more surfaces of the product need to be tapped.

[0003] Existing tapping fixtures usually can only tap one surface of the product at a time. When multiple surfaces need to be tapped, they can only be tapped one surface at a time in sequence. In this way, the labor cost is increased, and the processing efficiency is relatively low. Summary of the Utility Model

[0004] The purpose of the embodiments of this application is to provide a tapping fixture to solve the technical problems in the existing technology that the tapping fixture can only tap one surface of the product at a time, resulting in an increase in labor cost and a decrease in processing efficiency.

[0005] To achieve the above purpose, the technical solution adopted in this application is: to provide a tapping fixture, including a mounting plate, at least one fixing mechanism, at least one first tapping mechanism, and at least one second tapping mechanism; the fixing mechanism is installed on the mounting plate; the fixing mechanism includes a placement position and a pressing member; the placement position is used for placing the product to be tapped, and the pressing member can move towards the product to be tapped to press the product to be tapped; a first metal inductor is provided on the placement position, and the first metal inductor is used to detect whether the product to be tapped is placed in place; the first tapping mechanism is vertically arranged on the mounting plate and faces the fixing mechanism, and the first tapping mechanism is used for tapping the product to be tapped in the vertical direction; the second tapping mechanism is horizontally arranged on the mounting plate and faces the fixing mechanism, and the second tapping mechanism is used for tapping the product to be tapped in the horizontal direction.

[0006] Optionally, the placement position includes a support member and a plurality of guiding members; the plurality of guiding members are annularly distributed and enclose an annular area, and the support member is located within the annular area; the product to be tapped is placed within the annular area, the support member is used to support the product to be tapped, and the plurality of guiding members are used to limit the movement of the product to be tapped in the horizontal direction.

[0007] Optionally, the guiding member includes a guiding portion and a connecting portion connected in sequence; the guiding portion bends away from the annular area, and the connecting portion is connected to the mounting plate.

[0008] Optionally, the fixing mechanism further includes a positioning member, a positioning hole is provided on the product to be tapped, and the positioning member can be clamped in the positioning hole.

[0009] Optionally, the first tapping mechanism includes a first universal joint tapping rod and a first tapping needle. The first universal joint tapping rod is movably connected to the mounting plate, the first tapping needle is connected to the first universal joint tapping rod, and the first universal joint tapping rod can drive the first tapping needle to rotate around the vertical direction and move along the vertical direction.

[0010] Optionally, the second tapping mechanism includes a rotation driving member, a transmission assembly, a universal joint sleeve, a second universal joint tapping rod and a second tapping needle; the transmission assembly is mounted on the mounting plate, the axis of the input end of the transmission assembly is perpendicular to the axis of the output end of the transmission assembly, the input end of the transmission assembly is connected to the rotation driving member, the output end of the transmission assembly is connected to the first end of the universal joint sleeve, the second end of the universal joint sleeve is sleeved on the first end of the second universal joint tapping rod and is slidably connected to the second universal joint tapping rod, and the second end of the second universal joint is connected to the second tapping needle.

[0011] Optionally, the transmission assembly includes a first gear and a second gear that mesh with each other; the axis of the first gear is perpendicular to the axis of the second gear, the first gear is connected to the rotation driving member, and the second gear is connected to the universal joint sleeve.

[0012] Optionally, the second tapping mechanism further includes a guiding seat, a sliding seat and a sliding driving member; the guiding seat is mounted on the mounting plate, the sliding seat is slidably connected to the guiding seat, the sliding driving member is mounted on the mounting plate, and the output end of the sliding driving member is connected to the sliding seat; the second universal joint tapping rod is mounted on the sliding seat.

[0013] Optionally, the tapping fixture further includes a second metal inductor, and the second metal inductor is disposed close to the first tapping needle and / or the second tapping needle.

[0014] Optionally, the tapping fixture further includes an oil injection distributor and a plurality of oil injection nozzles. The plurality of oil injection nozzles are respectively connected to the oil injection distributor through oil pipes; the oil injection nozzles are disposed close to the first tapping needle and / or the second tapping needle.

[0015] The beneficial effects of the tapping fixture provided by this application are as follows: Compared with the prior art, in this application, at least one first tapping mechanism is provided to tap the product to be tapped in the vertical direction, and at least one second tapping mechanism is provided to tap the product to be tapped in the horizontal direction, so that the tapping fixture can tap on two or more surfaces simultaneously, greatly improving the processing efficiency and saving labor costs. By providing at least one fixing mechanism, two or more products to be tapped can be placed on the tapping fixture and processed simultaneously, further improving the processing efficiency. A first metal inductor is provided at the placement position to ensure that the product to be tapped is accurately placed in place before processing, improving the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Schematic three-dimensional structure of the tapping fixture provided by the embodiment of this application Figure 1 ;

[0018] Figure 2 Schematic three-dimensional structure of the tapping fixture provided by the embodiment of this application Figure 2 ;

[0019] Figure 3 Schematic three-dimensional structure diagram of the tapping fixture (excluding the gear box) provided by the embodiment of this application;

[0020] Figure 4 For Figure 3 Partial enlarged view of A in

[0021] Figure 5 Schematic three-dimensional structure diagram of the product to be tapped in the tapping fixture provided by the embodiment of this application.

[0022] Among them, the reference numerals in the figures:

[0023] 100 - Product to be tapped; 101 - Vertical tapping position; 102 - Horizontal tapping position;

[0024] 10 - Mounting plate;

[0025] 20 - Fixing mechanism; 21 - First metal inductor; 22 - Support member; 23 - Guide member; 24 - Downward pressing drive member; 25 - Pressing block; 26 - Positioning member;

[0026] 30 - First tapping mechanism; 31 - First universal joint tapping rod; 32 - First tapping needle

[0027] 40 - Second tapping mechanism; 41 - Transmission component; 411 - First gear; 412 - Second gear; 413 - Driving gear; 414 - Driven gear; 415 - First transmission shaft; 416 - Second transmission shaft; 417 - Gear box; 418 - Bearing; 419 - Snap ring; 42 - Universal joint sleeve; 43 - Second universal joint tapping rod; 44 - Guide seat; 45 - Sliding seat

[0028] 50 - Second metal inductor

[0029] 60 - Fuel injection distributor

[0030] 70 - Fuel injector; 71 - Fuel pipe joint

[0031] 80 - Suspension ring

[0032] 90 - Support rod Detailed implementation mode

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0037] Please refer to Figure 1 and Figure 2 simultaneously. Now, the tapping fixture provided by the embodiment of the present application will be described. The tapping fixture includes a mounting plate 10, at least one fixing mechanism 20, at least one first tapping mechanism 30, and at least one second tapping mechanism 40. The fixing mechanism 20 is mounted on the mounting plate 10. The fixing mechanism 20 includes a placement position and a pressing member. The placement position is used for placing the product 100 to be tapped, and the pressing member can move towards the product 100 to be tapped to press the product 100 to be tapped. A first metal inductor 21 is provided at the placement position, and the first metal inductor 21 is used to detect whether the product 100 to be tapped is placed in place. The first tapping mechanism 30 is vertically arranged on the mounting plate 10 and faces the fixing mechanism 20. The first tapping mechanism 30 is used for tapping the product 100 to be tapped in the vertical direction. The second tapping mechanism 40 is horizontally arranged on the mounting plate 10 and faces the fixing mechanism 20. The second tapping mechanism 40 is used for tapping the product 100 to be tapped in the horizontal direction.

[0038] Compared with the prior art, in the tapping fixture provided by the embodiment of the present application, in this embodiment, at least one first tapping mechanism 30 is provided to tap the product 100 to be tapped in the vertical direction, and at least one second tapping mechanism 40 is provided to tap the product 100 to be tapped in the horizontal direction, so that the tapping fixture can tap on two surfaces or multiple surfaces simultaneously, greatly improving the processing efficiency and saving labor costs. By providing at least one fixing mechanism 20, two or more products 100 to be tapped can be placed on the tapping fixture and processed simultaneously, further improving the processing efficiency. A first metal inductor 21 is provided at the placement position to ensure that the product 100 to be tapped is accurately placed in place before processing, improving the processing accuracy.

[0039] In an embodiment of the present application, please refer to Figure 1 and Figure 3 simultaneously. The placement position includes a support member 22 and a plurality of guide members 23. The plurality of guide members 23 are annularly distributed and enclose an annular region, and the support member 22 is located within the annular region. The product 100 to be tapped is placed within the annular region. The support member 22 is used to support the product 100 to be tapped, and the plurality of guide members 23 are used to limit the movement of the product 100 to be tapped in the horizontal direction.

[0040] In this embodiment, the support member 22 can adopt a columnar structure, and a plurality of support members 22 can be provided. The plurality of support members 22 are spaced apart. In this way, it can play an avoidance role in the installation of the first tapping mechanism 30. It can be understood that the product 100 to be tapped is placed on the support member 22 from top right to bottom. By providing the guide members 23, the difficulty of placing the product 100 to be tapped within the annular region can be reduced.

[0041] In an embodiment of the present application, the guiding member 23 includes a guiding portion and a connecting portion connected in sequence; the guiding portion is bent away from the annular region, and the connecting portion is connected to the mounting plate 10.

[0042] In this embodiment, the guiding portion is bent away from the annular region, so that the diameter of the annular region gradually increases from bottom to top, which can more conveniently place the product 100 to be tapped into it.

[0043] In an embodiment of the present application, please refer to Figure 1 , the pressing member includes a pressing driving member 24 and a pressing block 25. The pressing driving member 24 is installed on the mounting plate 10. The output end of the pressing driving member 24 is connected to the pressing block 25. The pressing driving member 24 can drive the pressing block 25 to move, so that the pressing block 25 presses against the upper surface of the product 100 to be tapped.

[0044] In this embodiment, by setting the pressing driving member 24 to drive the pressing block 25 to move, a downward pressure can be provided to the pressing block 25, so that the product 100 to be tapped is placed more firmly. Specifically, the pressing driving member 24 can adopt a 90-degree downward pressing cylinder. The 90-degree downward pressing cylinder can drive the pressing block 25 to flip 90 degrees and then press down. Before placing the product 100 to be tapped, the pressing block 25 is located outside the placement area to avoid interfering with the placement of the product 100 to be tapped.

[0045] In an embodiment of the present application, please refer to Figure 1 , the fixing mechanism 20 further includes a positioning member 26. The product 100 to be tapped is provided with a positioning hole, and the positioning member 26 can be clamped in the positioning hole.

[0046] In this embodiment, by setting the positioning member 26, the placement position of the product 100 to be tapped can be positioned, and thus the accuracy of the tapping position of the product 100 to be tapped can be guaranteed. Multiple positioning members 26 can be provided, and the multiple positioning members 26 can also play a role in fixing the product 100 to be tapped to prevent the product 100 to be tapped from shaking in the horizontal direction.

[0047] Specifically, the positioning member 26 can be needle-shaped or columnar, and the size of the positioning member 26 matches the size of the positioning hole.

[0048] In an embodiment of the present application, please refer to Figure 1 , the first tapping mechanism 30 includes a first universal joint tapping rod 31 and a first tapping needle 32. The first universal joint tapping rod 31 is movably connected to the mounting plate 10. The first tapping needle 32 is connected to the first universal joint tapping rod 31. The first universal joint tapping rod 31 can drive the first tapping needle 32 to rotate around the vertical direction and move along the vertical direction.

[0049] In this embodiment, the number of the first tapping mechanisms 30 is determined according to the positions to be tapped. Please refer toFigure 5 In this embodiment, the product 100 to be tapped has four vertical tapping positions 101, so four first tapping mechanisms 30 need to be provided.

[0050] In an embodiment of the present application, please refer to Figure 1 and Figure 2 , the second tapping mechanism 40 includes a rotation driving member, a transmission assembly 41, a universal joint sleeve 42, a second universal joint rod 43 and a second tapping needle; the transmission assembly 41 is installed on the mounting plate 10, and the axis of the input end of the transmission assembly 41 is perpendicular to the axis of the output end of the transmission assembly 41. The input end of the transmission assembly 41 is connected to the rotation driving member, and the output end of the transmission assembly 41 is connected to the first end of the universal joint sleeve 42. The second end of the universal joint sleeve 42 is sleeved on the first end of the second universal joint rod 43 and is slidably connected to the second universal joint rod 43. The second end of the second universal joint is connected to the second tapping needle.

[0051] In this embodiment, the universal joint sleeve 42 is sleeved on the second universal joint rod 43 and is slidably connected to the second universal joint rod 43, which can realize the telescoping of the universal joint sleeve 42 and the second universal joint rod 43, so as to realize the position adjustment of the second tapping needle in the horizontal direction.

[0052] In an embodiment of the present application, please refer to Figure 3 and Figure 4 , the transmission assembly 41 includes a first gear 411 and a second gear 412 that mesh with each other; the axis of the first gear 411 is perpendicular to the axis of the second gear 412. The first gear 411 is connected to the rotation driving member, and the second gear 412 is connected to the universal joint sleeve 42.

[0053] In this embodiment, by setting the first gear 411 and the second gear 412, the transmission direction of the driving force output by the rotation driving member can be changed, making the overall structure more compact. Both the first gear 411 and the second gear 412 can be 90-degree bevel gears.

[0054] In an embodiment of the present application, there are multiple universal joint sleeves 42, and the transmission assembly 41 further includes a driving gear 413 and a plurality of driven gears 414 that are all meshed with the driving gear 413; the driving gear 413 is coaxially arranged with the second gear 412, and one driven gear 414 is correspondingly connected to one universal joint sleeve 42. By setting the driving gear 413 and the plurality of driven gears 414, multiple universal joint sleeves 42 can be driven to rotate simultaneously.

[0055] Specifically, the transmission assembly 41 further includes a first transmission shaft 415, a second transmission shaft 416, and a gear box 417; the gear box 417 is installed on the mounting plate 10, and the first gear 411, the second gear 412, the driving gear 413, and the driven gear 414 are all arranged inside the gear box 417; the first transmission shaft 415 is installed on the mounting plate 10 through a bearing 418 and a snap ring 419 and extends into the gear box 417; the first gear 411 is installed on the first transmission shaft 415, and the first transmission shaft 415 is connected to a rotation driving member; the second transmission shaft 416 is installed on the gear box 417 through a bearing 418 and a snap ring 419, and the second gear 412 and the driving gear 413 are installed on the second transmission shaft 416.

[0056] In this embodiment, the working principle of the transmission assembly 41 is as follows: the rotation driving member drives the first transmission shaft 415 to rotate, thereby driving the first gear 411 to rotate; the first gear 411 meshes with the second gear 412 to drive the second gear 412 to rotate; the second gear 412 and the driving gear 413 are coaxially arranged, and the driving gear 413 rotates as the second gear 412 rotates; the driving gear 413 meshes with the driven gear 414 to drive the driven gear 414 to rotate, and the driven gear 414 is connected to the universal joint sleeve 42, thereby driving the universal joint sleeve 42 to rotate.

[0057] In this embodiment, the number of universal joint sleeves 42 corresponds one-to-one to the number of second tapping needles. Please refer to Figure 5 , the product 100 to be tapped in this embodiment has four horizontal tapping positions 102, so four second tapping needles need to be provided.

[0058] In an embodiment of the present application, please refer to Figure 1 , the second tapping mechanism 40 further includes a guide seat 44, a sliding seat 45, and a sliding driving member; the guide seat 44 is installed on the mounting plate 10, the sliding seat 45 is slidably connected to the guide seat 44, the sliding driving member is installed on the mounting plate 10, and the output end of the sliding driving member is connected to the sliding seat 45; the second universal joint tapping rod 43 is installed on the sliding seat 45.

[0059] In this embodiment, by providing the guide seat 44 and the sliding seat 45, the movement of the second universal joint tapping rod 43 can be guided to make its movement more stable; by providing the sliding driving member, the movement of the second universal joint tapping rod 43 can be driven to make its movement more accurate; the sliding driving member can adopt a telescopic cylinder.

[0060] In an embodiment of the present application, please refer to Figure 1 , the tapping fixture further includes a second metal inductor 50, and the second metal inductor 50 is arranged close to the first tapping needle 32 and / or the second tapping needle.

[0061] In this embodiment, by providing the second metal inductor 50, it is possible to determine whether the first tapping needle 32 and / or the second tapping needle is broken, so as to facilitate timely replacement of the first tapping needle 32 and / or the second tapping needle. It can be understood that multiple second metal inductors 50 are provided. One second metal inductor 50 is correspondingly provided for one first tapping needle 32, and one second metal inductor 50 is correspondingly provided for one second tapping needle, that is, the number of second metal inductors 50 is the sum of the numbers of the first tapping needle 32 and the second tapping needle.

[0062] In one embodiment of the present application, please refer to Figure 1 , the tapping fixture further includes an oil injection distributor 60 and a plurality of oil injection nozzles 70. The plurality of oil injection nozzles 70 are respectively connected to the oil injection distributor 60 through oil pipes; the oil injection nozzles 70 are arranged close to the first tapping needle 32 and / or the second tapping needle.

[0063] In this embodiment, by providing the oil injection nozzles 70, it is possible to inject oil onto the first tapping needle 32 and / or the second tapping needle, so as to improve the lubricity of the first tapping needle 32 and / or the second tapping needle during operation and increase the service life of the first tapping needle 32 and the second tapping needle. It can be understood that multiple oil injection nozzles 70 are provided. One oil injection nozzle 70 is correspondingly provided for one first tapping needle 32, and one oil injection nozzle 70 is correspondingly provided for one second tapping needle, that is, the number of oil injection nozzles 70 is the sum of the numbers of the first tapping needle 32 and the second tapping needle. The end of the oil pipe can also be provided with an oil pipe joint 71 to facilitate the installation and replacement of the oil injection nozzle 70.

[0064] In one embodiment of the present application, please refer to Figure 1 , a lifting ring 80 is further installed on the upper surface of the mounting plate 10, which can facilitate the use of a lifting device to lift the tapping fixture and facilitate the handling of the tapping fixture.

[0065] In one embodiment of the present application, please refer to Figure 1 , a plurality of support rods 90 are further installed on the lower panel of the mounting plate 10. The support rods 90 are placed on the ground to support the mounting plate 10. By providing the support rods 90, when the tapping fixture is placed on the ground, it is possible to avoid damaging the components below the mounting plate 10.

[0066] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tapping jig, characterized in that: include: Mounting plate; At least one fixing mechanism, the fixing mechanism is installed on the mounting plate; the fixing mechanism comprises a placement position and a pressing member; the placement position is used to place the product to be tapped, and the pressing member can move toward the product to be tapped to press the product to be tapped; a first metal sensor is provided on the placement position, and the first metal sensor is used to detect whether the product to be tapped is placed in place; At least one first tapping mechanism, the first tapping mechanism is vertically arranged on the mounting plate and faces the fixing mechanism, and the first tapping mechanism is used for tapping the product to be tapped in a vertical direction; At least one second tapping mechanism, wherein the second tapping mechanism is horizontally arranged on the mounting plate and faces the fixing mechanism, and the second tapping mechanism is used for tapping the product to be tapped in a horizontal direction.

2. The tapping jig according to claim 1, characterized in that: The placement position includes a support member and multiple guide members; the multiple guide members are distributed in a ring shape and enclose a ring-shaped area, and the support member is located in the ring-shaped area; the product to be tapped is placed in the ring-shaped area, the support member is used to support the product to be tapped, and the multiple guide members are used to limit the horizontal movement of the product to be tapped.

3. The tapping jig according to claim 2, characterized in that: The guide member comprises a guide portion and a connection portion which are connected in sequence; the guide portion is bent away from the annular area, and the connection portion is connected to the mounting plate.

4. The tapping jig according to claim 1, characterized in that: The fixing mechanism also includes a positioning piece. The product to be tapped is provided with a positioning hole, and the positioning piece can be snapped into the positioning hole.

5. The tapping jig according to any one of claims 1 to 4, characterized in that: The first tapping mechanism includes a first universal joint rod and a first tapping needle. The first universal joint rod is movably connected to the mounting plate. The first tapping needle is connected to the first universal joint rod. The first universal joint rod can drive the first tapping needle to rotate around the vertical direction and move along the vertical direction.

6. The tapping jig according to claim 5, characterized in that: The second tapping mechanism includes a rotating drive member, a transmission assembly, a universal joint sleeve, a second universal joint rod and a second tapping needle; the transmission assembly is installed on the mounting plate, the axis of the input end of the transmission assembly and the axis of the output end of the transmission assembly are perpendicular to each other, the input end of the transmission assembly is connected to the rotating drive member, the output end of the transmission assembly is connected to the first end of the universal joint sleeve, the second end of the universal joint sleeve is sleeved on the first end of the second universal joint rod and is slidably connected to the second universal joint rod, and the second end of the second universal joint is connected to the second tapping needle.

7. The tapping jig according to claim 6, characterized in that: The transmission assembly includes a first gear and a second gear meshing with each other; the axis of the first gear and the axis of the second gear are perpendicular to each other, the first gear is connected to the rotating drive member, and the second gear is connected to the universal joint sleeve.

8. The tapping jig according to claim 6, characterized in that: The second tapping mechanism also includes a guide seat, a sliding seat and a sliding drive member; the guide seat is installed on the mounting plate, the sliding seat is slidably connected to the guide seat, the sliding drive member is installed on the mounting plate, and the output end of the sliding drive member is connected to the sliding seat; the second universal joint tooth rod is installed on the sliding seat.

9. The tapping jig according to claim 6, characterized in that: The tapping jig further includes a second metal sensor, and the second metal sensor is arranged close to the first tapping needle and / or the second tapping needle.

10. The tapping jig according to any one of claims 6 to 9, characterized in that: The tapping jig further includes an oil spray distributor and a plurality of oil spray nozzles, wherein the plurality of oil spray nozzles are respectively connected to the oil spray distributor through oil pipes; the oil spray nozzles are arranged close to the first tapping needle and / or the second tapping needle.

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