A tapping device and method of use thereof

Abstract

This invention relates to the field of machining technology for medium and large castings, and particularly to a tapping device for products with complex spaces and limited machine tool processing space. The tapping device includes a first positioning device, a second positioning device, a locking device, and a tap. The first positioning device and the second positioning device are movably engaged. The locking device is used to lock the second positioning device and the first positioning device. The tap is fixedly connected to the second positioning device. This invention solves the problem of spatial interference correction drilling and tapping in the prior art, and provides a spatial interference correction drilling and tapping device. This spatial interference correction drilling and tapping device includes an arc-shaped positioning and fixing device and a movable tooth-shaped positioning device, achieving efficient and reliable drilling and tapping of interference holes with different angles and heights.

Description

Technical Field

[0001] This invention relates to the field of machining technology for medium and large castings, and in particular to a tapping device for products with complex spaces and limited machine tool processing space. Background Technology

[0002] In the machining of medium and large castings and mechanical parts, processing efficiency should be maximized and processing costs minimized while ensuring processing requirements are met. Drilling, reaming, or tapping in areas with spatial interference presents significant challenges. In most cases, BIG attachments are used to adjust the angle of the tool holder. However, the selection of BIG attachments is limited in areas of spatial interference, severely restricting the diameter of drilling and tapping tools, rendering many tools unusable. Using a bent air drill cannot meet the perpendicularity and diameter requirements of the hole, affecting product quality. Some products have through holes, but countersinking and tapping occur on the side of spatial interference. While drilling the through hole first and then reverse-pulling the countersink can partially reverse-pull the countersink, this method is not feasible when the through hole diameter is small, the countersink diameter is large, and the hole depth is deep and elongated. This situation is frequently encountered in the machining industry, and considering both processing resources and delivery cycles, machine tool processing is not the optimal choice. Manual drilling or tapping by hand using a point-plotting method increases the risk of quality problems. This method not only fails to guarantee positional accuracy and perpendicularity but also risks dimensional deviations. Manual drilling and tapping requires positioning and calibration; therefore, a spatial interference correction drilling and tapping device was designed. Summary of the Invention

[0003] Therefore, it is necessary to provide a spatial interference correction drilling and tapping device to address the above problems, which enables drilling and tapping of interference holes at different angles and heights.

[0004] The objective of this invention is achieved as follows: the tapping device includes a first positioning device, a second positioning device, a locking device, and a tap. The first positioning device and the second positioning device are movably engaged. The locking device is used to lock the second positioning device and the first positioning device. The tap is fixedly connected to the second positioning device.

[0005] In one embodiment, the first positioning device is arc-shaped, and a first toothed rack is provided at the outer end of the arc.

[0006] In one embodiment, one end of the second positioning device is provided with a second rack corresponding to the first rack.

[0007] In one embodiment, the first positioning device is further provided with a T-slot, which is parallel to the first rack.

[0008] In one embodiment, a fixing plate is further included, with through holes provided at both ends of the fixing plate.

[0009] In one embodiment, a T-bolt is provided in the T-slot, and the T-bolt can slide in the T-slot.

[0010] In one embodiment, the second positioning device is provided with a connecting hole, which is a threaded hole.

[0011] In one embodiment, the through hole at one end of the fixing plate is connected to the T-bolt, and the through hole at the other end of the fixing plate is connected to the connecting hole by a bolt.

[0012] In one embodiment, the first positioning device has a plurality of fixing holes at the end away from the first rack.

[0013] The method of using the tapping device includes the following steps:

[0014] S1: Confirm the location of the spatial interference hole according to the product;

[0015] S2: Select a preset angle to install the tapping device, and position and fix the first positioning device to the product through the fixing hole;

[0016] S3: Fix the positioning hole, the connecting hole, and the fixing plate with bolts, so that the fixing plate is fixed on the second positioning device;

[0017] S4: Insert the T-bolt into the T-slot, install and fix the second positioning device to the first positioning device through the fixing plate, the second positioning hole, the washer and the wing nut, and ensure that the first rack and the second rack are engaged, and check the perpendicularity and position.

[0018] S5: Insert the tap into the insert hole, and put the nylon correction sleeve on the shank of the tap, with the nylon correction sleeve and the tap having a clearance fit;

[0019] S6: Tap the hole by hand using a auger or by using a pneumatic drill.

[0020] This invention solves the problem of spatial interference correction drilling and tapping in the prior art, and provides a spatial interference correction drilling and tapping device. The spatial interference correction drilling and tapping device includes an arc-shaped positioning and fixing device and a movable tooth-shaped positioning device, which realizes efficient and reliable drilling and tapping of interference holes with different angles and heights. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the tapping device structure;

[0022] Figure 2 This is a schematic diagram of the tapping device in use;

[0023] 100—First positioning device, 110—T-slot, 120—T-bolt, 130—Fixing hole, 140—Fixing plate, 141—Positioning hole, 142—Second positioning hole, 150—Bolt, 151—Washer, 160—Positioning bolt, 161—Washer, 170—Wing nut, 171—Flat washer, 200—Second positioning device, 210—Sleeve hole, 220—Connecting hole, 230—Nylon correction sleeve, 240—Tap. Detailed Implementation

[0024] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0025] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "end," "top," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] A tapping device includes a first positioning device 100, a second positioning device 200, a locking device, and a tap 240. The first positioning device 100 and the second positioning device 200 are movably engaged. The locking device is used to lock the second positioning device 200 and the first positioning device 100. The tap 240 is fixedly connected to the second positioning device 200.

[0028] The first positioning device 100 is arc-shaped, with a first rack at its outer end. The second positioning device 200 has a second rack at one end corresponding to the first rack. The first positioning device 100 also has a T-slot 110 parallel to the first rack. It further includes a fixing plate 140 with through holes at both ends, including a first through hole 141 and a second through hole 142. A T-bolt 120 is installed in the T-slot 110, allowing the second positioning device 200 to slide within the first positioning device. The device moves along the circumference. The through hole at one end of the fixing plate 140 is connected to the T-bolt 120. Specifically, after the position of the second positioning device 200 on the first positioning device 100 is determined, the second through hole 142 is connected to the T-bolt 120. At the same time, a flat washer 171 is provided between the wing nut 170 and the fixing plate 140. The wing nut 170 is connected to the tail of the T-bolt 120 by a thread. The wing nut 160 is used to fix the position of the second positioning device 200, which can ensure the meshing of the first rack and the second rack, and ensure the perpendicularity and position of the rack meshing.

[0029] The first positioning device 100 is provided with a plurality of fixing holes 130, and the fixing holes can be selected at appropriate positions according to the actual situation to fix the first positioning device 100 on the product.

[0030] The second positioning device is provided with a connecting hole 220, which is a threaded hole. The through hole at the other end of the fixing plate 140 is connected to the connecting hole 220 by a bolt 150. A washer 151 is provided between the bolt 150 and the connecting hole 220. The first positioning device 100 is provided with several fixing holes 130 at the end away from the first rack. The fixing holes 130 are through holes, through which the first positioning device 100 is connected and fixed to the product. The tooth profile of the first rack of the first positioning device 100 is divided into 0.5° increments to ensure multi-angle use. The second positioning device 200 can control the relative relationship between the second positioning device 200 and the first positioning device 100 in the vertical direction according to the rotation depth of the bolt 150 and the fixing plate 140. Specifically, the contact surface between the second positioning device 200 and the first positioning device 100 can be adjusted up and down along the meshing surface to further ensure multi-angle use of the tapping device.

[0031] The tap 240 is rigidly connected to the second positioning device 200 through the insert hole 210. Further, a nylon correction sleeve 230 is installed on the shank of the tap 240. The nylon correction sleeve 230 and the tap 240 are in clearance fit, preferably less than 0.05 mm. The nylon correction sleeve 230 is positioned by the second positioning device 200, thereby achieving the purpose of correcting the tap 240. The diameter of the insert hole 210 can be customized according to product requirements. The inner diameter of the nylon correction sleeve 230 can be determined based on the diameter of the shank of the tap 240, and the outer diameter can be determined based on the insert hole 210. The insert hole 210, the nylon correction sleeve 230, and the tap 240 are all in clearance fit, with each clearance less than 0.05 mm. The insert hole 210 is perpendicular to both the first positioning device 100 and the second positioning device, and the teeth of the first positioning device 100 and the second positioning device 200 are parallel.

[0032] The second rack on the second positioning device 200 has fewer teeth than the first rack.

[0033] In one embodiment, the nylon correction sleeve 230 can also be made with a universal outer diameter and different inner diameters to ensure the use of different taps / drills.

[0034] Operating steps of the tapping device:

[0035] First, confirm the position of the spatial interference hole according to the product, then select a suitable angle to install the spatial interference correction drilling and tapping device, and position and fix the first positioning device 100 to the product through the fixing hole. Specifically, install the flat washer 161 on the positioning bolt 160, and use the positioning bolt 160 to fix the first positioning device 100 to the product.

[0036] Install the flat washer 151 onto the bolt 150, and fix the fixing plate 140 onto the second positioning device 200 through the connecting hole 220.

[0037] Insert the T-bolt 120 into the T-slot 110, adjust the angle, align it with the machining hole position, and install and fix the second positioning device 200 to the first positioning device 100 through the fixing plate 140, the second positioning hole 142, the washer 171 and the wing nut 170, and ensure that the rack is engaged. Check the verticality and position.

[0038] Insert the tap 240 into the insert hole 210, and install the nylon correction sleeve 230 on the shank of the tap 240. The nylon correction sleeve 230 and the tap 240 are fitted with a clearance, and the clearance is controlled within 0.05 mm. The nylon correction sleeve is corrected by the second positioning device 200. Finally, tapping is performed by manual auger or by pneumatic drilling.

[0039] The second positioning device 200 can be used in different sizes and can be moved along the circumference through toothed indexing to ensure multi-angle use.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A tapping device, characterized in that, The tapping device includes a first positioning device, a second positioning device, a locking device, and a tap. The first positioning device and the second positioning device are movably engaged. The locking device is used to lock the second positioning device and the first positioning device. The tap is fixedly connected to the second positioning device. The first positioning device is arc-shaped, and a first toothed rack is provided at the outer end of the arc; One end of the second positioning device is provided with a second rack corresponding to the first rack; The first positioning device is also provided with a T-slot, which is parallel to the first rack; A T-bolt is provided in the T-slot, and the T-bolt can slide in the T-slot; The second positioning device is provided with a connecting hole, which is a threaded hole; It also includes a fixing plate, wherein a first through hole and a second through hole are respectively provided at both ends of the fixing plate; The second through hole at one end of the fixing plate is connected to a T-bolt, and the first through hole at the other end of the fixing plate is connected to the connecting hole by a bolt.

2. A tapping device as described in claim 1, characterized in that, The first positioning device has several fixing holes at the end away from the first rack.

3. A method of using the tapping device as described in claim 2, characterized in that, The method of use includes the following steps: S1: Confirm the location of the spatial interference hole according to the product; S2: Select a preset angle to install the tapping device, and position and fix the first positioning device to the product through the fixing hole; S3: Fix the first through hole to the connecting hole and the fixing plate with bolts, so that the fixing plate is fixed on the second positioning device; S4: Insert the T-bolt into the T-slot, install and fix the second positioning device to the first positioning device through the fixing plate, the second through hole, the washer and the wing nut, and ensure that the first rack and the second rack are engaged. Check the verticality and position. S5: Insert the tap into the insert hole, and put the nylon correction sleeve on the shank of the tap, with the nylon correction sleeve and the tap having a clearance fit; S6: Tap the hole by hand using a auger or by using a pneumatic drill.

Images