Combined tool for counterboring

Abstract

The application provides a combination tool for counterbore machining, and relates to the technical field of counterbore tools, which comprises a counterbore guide, two expansion pieces are installed on the counterbore guide, and the two expansion pieces are used for counterbore; an expansion force applying piece is installed inside the counterbore guide; the expansion force applying piece is attached to the two expansion pieces; a real-time water flushing piece is installed on the counterbore guide; the real-time water flushing piece is used for preventing the expansion piece below from being blocked by debris; the test electric column can be matched with the insulating column, so that the staff can quickly know the precision deviation of the counterbore tool arm, and the detection is more direct, so as to solve the problems that the current combination tool for counterbore machining is not convenient for the staff to quickly calibrate and detect the tool precision, and metal chips are easily attached to the side surface of the counterbore tool during reverse counterbore.

Description

Technical Field

[0001] This invention relates to the field of countersinking tools, and more particularly to a combination tool for countersinking. Background Technology

[0002] Countersinking tools are specialized tools used to machine cylindrical countersunk holes, tapered countersunk holes, and boss end faces on pre-machined holes. In actual workpiece manufacturing, countersinking operations on the front or back sides are frequently involved. Cylindrical countersinks are mainly used to machine cylindrical countersunk holes. Current countersinking combination tools usually have expandable countersinking cutters, which can facilitate countersinking on the back side of the workpiece. However, traditional countersinking tools are not convenient for centrifugal force control of countersinking cutter expansion to perform front or back combination countersinking operations. Changing tools is cumbersome, reducing processing efficiency. At the same time, it is not convenient for workers to quickly calibrate and test tool accuracy. Traditional measurement methods are time-consuming and labor-intensive, and the accuracy is difficult to guarantee. In addition, because countersinking on the back side of the workpiece requires passing through the workpiece first, metal chips are easily attached to the side of the countersinking cutter during reverse countersinking, affecting the perpendicularity of the countersinking cutter after expansion. Summary of the Invention

[0003] This disclosure relates to a combination tool for countersinking, which solves the problems of current countersinking combination tools being inconvenient for workers to quickly calibrate and test tool accuracy, and the easy adhesion of metal chips to the side of the countersinking tool during reverse countersinking.

[0004] In a first aspect, this disclosure provides a combination tool for countersinking, specifically including a countersinking guide, on which two expansion members are mounted for countersinking; an expansion force-applying member is installed inside the countersinking guide; the expansion force-applying member is attached to the two expansion members; a real-time flushing member is mounted on the countersinking guide; the real-time flushing member is used to prevent debris from obstructing the expansion members below; the countersinking guide includes: a guide handle and a drainage hole, the guide handle having a drainage hole; the top of the drainage hole is located outside the guide handle.

[0005] In at least some embodiments, the countersinking guide further includes: a spring and a chamfering cutter, wherein the spring is sleeved inside the guide handle; the chamfering cutter is slidably inserted into the side of the guide handle, and the chamfering cutter has a V-shaped structure; the chamfering cutter is used to remove burrs; and the spring is connected between the chamfering cutter and the guide handle.

[0006] In at least some embodiments, the countersinking guide further includes: test terminals, four test terminals are slidably inserted into the guide handle, the four test terminals are arranged symmetrically in pairs; the test terminals are used to contact a multimeter; the outer side of the test terminals is insulated from the guide handle.

[0007] In at least some embodiments, the expansion member includes: a countersinking arm, an insulating post, and a grounding strip. Two countersinking arms are rotatably mounted on the guide handle via a rotating shaft, and each countersinking arm is provided with a countersinking cutter. The outer side of the end of each countersinking arm has an arc-shaped structure. An insulating post is fixedly inserted into the middle of each countersinking arm. The two countersinking arms are symmetrically staggered. The two countersinking arms are used for countersinking on the front and back sides, respectively. A grounding strip is fixedly mounted on each countersinking arm. The two insulating posts pass through the two grounding strips, respectively. The two insulating posts correspond to two test grounding posts on the same side, and the diameter of the test grounding posts is smaller than that of the insulating posts. The bottom end of the drainage hole is located below the countersinking arm.

[0008] In at least some embodiments, the expansion member further includes a reset rubber strip, with a reset rubber strip fixedly installed on each of the two countersinking cutter arms.

[0009] In at least some embodiments, the expansion member further includes: a fixing post, two fixing posts are fixedly installed on the guide shank, and two reset rubber strip ends are fixedly connected to the two fixing posts respectively; the reset rubber strip is used to pull the countersinking tool arm.

[0010] In at least some embodiments, the expansion force-applying component includes a rotating arm, which is rotatably mounted on the guide handle via a rotating shaft; the rotating arm has a symmetrical structure.

[0011] In at least some embodiments, the expansion force-applying component further includes: lead blocks, two lead blocks are fixedly installed on the rotating arm, and the two lead blocks are respectively located on both sides of the rotating arm; the two lead blocks are respectively attached to the two countersinking cutter arms; the two lead blocks protrude from the rotating arm; the rotating arm is used for centrifugal offset.

[0012] In at least some embodiments, the real-time flushing component includes: a flushing sleeve and a blade holder connecting sleeve, wherein the flushing sleeve is fitted onto the guide blade handle; the flushing sleeve is fitted onto the top of the drainage hole; the blade holder connecting sleeve is fixedly installed on the top of the flushing sleeve, and the blade holder connecting sleeve is used to fit onto the blade holder; the blade holder connecting sleeve is provided with a threaded hole; the blade holder connecting sleeve is provided with a screw hole for installing screws to fasten and fit the blade holder.

[0013] In at least some embodiments, the real-time flushing component further includes: a water supply pipe, which is fixedly installed on the flushing housing and connected to a cutting fluid pump; the water supply pipe is connected to a drainage hole.

[0014] This invention provides a combination tool for countersinking, which has the following advantages:

[0015] The chamfering tool used in this invention can be used to chamfer and deburr the drilled edge before countersinking to prevent chipping or scratches on the workpiece surface. The expansion force-applying component, in conjunction with the expansion component, can utilize the centrifugal force of rotation and the force applied by the eccentric lead block to push out the countersinking tool arm, avoiding the problems of high jamming probability and limited countersinking diameter of traditional expandable countersinking tool arms.

[0016] Furthermore, the use of test terminals can be combined with insulating terminals, making it easier for staff to quickly understand whether the countersink arm's precision deviation exceeds the standard. The detection is more direct, allowing staff to perform calibration and testing more quickly. This avoids increased wear and play in the countersink arm after prolonged use, and ensures that the perpendicularity between the countersink arm and the guide handle does not meet the standard, which would affect the subsequent countersinking quality. It also eliminates the need for staff to use calipers for inspection, which is cumbersome and makes it difficult to guarantee measurement accuracy.

[0017] In addition, the use of a real-time flushing device facilitates the rinsing of the bottom of the lower countersinking arm, preventing any impact on the perpendicularity between the guide handle and the lower countersinking arm. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram:

[0021] Figure 1 A schematic diagram of the overall structure of a combination tool for countersinking according to this application is shown;

[0022] Figure 2 A cross-sectional view of the internal structure of a combination tool for countersinking according to this application is shown;

[0023] Figure 3 A partial sectional view of a combination tool for countersinking according to this application is shown;

[0024] Figure 4 It shows Figure 3 Enlarged view of the structure of region B in the middle;

[0025] Figure 5 It shows Figure 3 Enlarged view of the structure of region C in the middle;

[0026] Figure 6 A schematic diagram of the overall structure of the expansion component of this application is shown;

[0027] Figure 7 A schematic diagram showing the location of the drainage hole in this application is provided;

[0028] Figure 8 A schematic diagram of the overall structure of the expansion force-applying component of this application is shown;

[0029] Figure 9 A schematic diagram of the overall structure of the real-time flushing component of this application is shown;

[0030] Figure 10 This application shows Figure 2 Enlarged view of the structure of the F region.

[0031] List of reference numerals

[0032] 1. Counterboring guide; 101. Guide handle; 1011. Drainage hole; 102. Spring; 103. Chamfering tool; 104. Test connection post; 2. Expansion component; 201. Counterboring tool arm; 2011. Insulating post; 202. Connection strip; 203. Reset rubber strip; 204. Fixing post; 3. Expansion force application component; 301. Rotating arm; 302. Lead block; 4. Real-time flushing component; 401. Flushing sleeve; 402. Tool holder connecting sleeve; 403. Water supply pipe. Detailed Implementation

[0033] 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, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figures 1 to 10 :

[0035] This invention proposes a combination tool for countersinking, including a countersinking guide 1, on which two expansion members 2 are mounted for countersinking; an expansion force-applying member 3 is installed inside the countersinking guide 1; the expansion force-applying member 3 is attached to the two expansion members 2; a real-time flushing member 4 is mounted on the countersinking guide 1; the real-time flushing member 4 is used to prevent debris from blocking the expansion members 2 below; the countersinking guide 1 includes: a guide handle 101 and a drainage hole 1011, the guide handle 101 having a drainage hole 1011; the top of the drainage hole 1011 is located outside the guide handle 101.

[0036] In this embodiment, the countersinking guide 1 further includes a spring 102 and a chamfering cutter 103. The spring 102 is sleeved inside the guide handle 101. The chamfering cutter 103 is slidably inserted into the side of the guide handle 101, and the chamfering cutter 103 has a V-shaped structure. The chamfering cutter 103 is used to remove burrs. The spring 102 is connected between the chamfering cutter 103 and the guide handle 101. The chamfering cutter 103 can be used to control the edge of the drilled hole to be chamfered and deburred before countersinking, which can improve the quality of subsequent countersinking, avoid burrs interfering with the countersinking cutter arm 201, and eliminate burrs and sharp edges generated by drilling. It provides a flat starting contact surface for the countersinking drill, prevents chipping or scratches on the workpiece surface, ensures that the countersinking cutter arm 201 can move horizontally upwards to countersink the drill, and also avoids burrs jamming the countersinking cutter arm 201, affecting the smooth expansion of the countersinking cutter arm 201.

[0037] In this embodiment, the countersinking guide 1 further includes: test terminals 104, four test terminals 104 are slidably inserted into the guide handle 101, and the four test terminals 104 are symmetrically arranged in pairs; the test terminals 104 are used to contact a multimeter; the outer side of the test terminals 104 is insulated from the guide handle 101; the expansion member 2 includes: countersinking arm 201, insulating post 2011 and connecting strip 202, two countersinking arms 201 are rotatably mounted on the guide handle 101 via a rotating shaft, and each of the two countersinking arms 201 is respectively provided with The device includes a countersinking cutter; the outer side of the countersinking cutter arm 201 has an arc-shaped structure; an insulating post 2011 is fixedly inserted into the middle of the countersinking cutter arm 201; the two countersinking cutter arms 201 are symmetrically staggered; the two countersinking cutter arms 201 are used for countersinking on the front and back sides respectively; a grounding strip 202 is fixedly installed on the countersinking cutter arm 201; the two insulating posts 2011 pass through the two grounding strips 202 respectively; the two insulating posts 2011 correspond to two test grounding posts 104 on the same side respectively, and the diameter of the test grounding posts 104 is smaller than that of the insulating posts 2011; the bottom end of the drain hole 1011 is located at the countersinking cutter. Below arm 201, a test terminal 104 is used in conjunction with insulating post 2011 to facilitate quick identification of deviations in the accuracy of the countersinking arm 201. This makes inspection more direct and allows for faster calibration, preventing increased wear and play after prolonged use of the countersinking arm 201, and ensuring proper perpendicularity between the countersinking arm 201 and guide shank 101, which can negatively impact subsequent countersinking quality. This structure eliminates the need for cumbersome caliper operation and ensures accurate measurements. When the countersink arm 201 expands and is perpendicular to the guide handle 101, the insulating post 2011 and the test terminal post 104 are attached and concentrically aligned. However, if the countersink arm 201 wears more play after long-term use and becomes misaligned, a multimeter can be manually connected to the two test terminals 104. If a circuit is displayed, it indicates that the countersink arm 201 and the guide handle 101 are no longer perpendicular and need to be replaced in time to avoid continuously affecting the countersinking accuracy. The test terminal post 104 can be inserted only during testing and can be removed during daily countersinking use.

[0038] In this embodiment, the expansion member 2 further includes: a reset rubber strip 203, which is fixedly installed on the two countersinking cutter arms 201 respectively; the expansion member 2 further includes: a fixing post 204, which is fixedly installed on the guide handle 101, and the ends of the two reset rubber strips 203 are fixedly connected to the two fixing posts 204 respectively; the reset rubber strips 203 are used to pull the countersinking cutter arms 201; the expansion force application member 3 includes: a rotating arm 301, which is rotatably installed on the guide handle 101 via a rotating shaft; the rotating arm 301 has a symmetrical structure; the expansion force application member 3 further includes: a lead block 302, which is fixed on the rotating arm 301. Two lead blocks 302 are fixedly installed, and the two lead blocks 302 are located on both sides of the rotating arm 301 respectively; the two lead blocks 302 are respectively attached to the two countersinking cutter arms 201; the two lead blocks 302 protrude from the rotating arm 301 respectively; the rotating arm 301 is used for centrifugal offset, and the expansion force application component 3 cooperates with the expansion component 2 to realize the use of rotational centrifugal force, through the eccentric lead blocks 302 to push out the countersinking cutter arm 201. At the same time, this structure can easily fit the countersinking cutter arm 201 to the workpiece surface for countersinking after one end of the countersinking cutter arm 201 is pushed out, making the operation simple and flexible, avoiding the problem of high jamming probability and limited countersinking diameter of traditional expandable countersinking cutter arms 201.

[0039] In Example 2, based on Example 1, the real-time flushing component 4 includes: a flushing sleeve 401 and a tool holder connecting sleeve 402. The flushing sleeve 401 is sleeved on the guide tool holder 101; the flushing sleeve 401 is sleeved on the top of the drainage hole 1011; the tool holder connecting sleeve 402 is fixedly installed on the top of the flushing sleeve 401, and the tool holder connecting sleeve 402 is used to fit onto the tool holder; the tool holder connecting sleeve 402 has a threaded hole; the threaded hole on the tool holder connecting sleeve 402 is used to install screws to fasten and fit the tool holder; the real-time flushing component 4 also includes: a water supply pipe 403, a water supply pipe 403 is fixedly installed on the flushing sleeve 401, and a cutting fluid pump is externally connected to the water supply pipe 403; the water supply pipe 403 connects to the drainage hole 1011, and uses real-time... The flushing component 4 facilitates the flushing of the bottom of the lower countersinking arm 201. Since the countersinking arm 201 needs to pass through the workpiece's drill hole, iron filings easily adhere to its bottom. In contrast, the upper countersinking arm 201 does not pass through the workpiece's drill hole and usually does not have iron filings adhering to it under the flushing of the cutting fluid nozzle. If iron filings do adhere, they can easily get stuck between the bottom of the countersinking arm 201 and the guide shank 101 after the countersinking arm 201 expands, affecting the perpendicularity between the guide shank 101 and the countersinking arm 201. This component allows for automatic, real-time flushing, has a simple and reasonable structure, and avoids the problem of cutting fluid flowing downwards during reverse expansion, which can easily cause jamming.

[0040] The working principle of this embodiment is as follows: First, the threaded hole on the tool holder connecting sleeve 402 is used to install screws to secure the tool holder. The guide tool holder 101 is installed on the tool holder. When the actual counterboring guide 1 moves down, it drives the chamfering cutter 103 to rotate. With the elastic compression of the spring 102, the chamfering cutter 103 with its beveled structure can play a role in rubbing off burrs. At the same time, as the chamfering cutter 103 moves down, its V-shaped structure can be used to grind and remove burrs from the upper and lower edges of the drill hole. As the guide tool holder 101 passes through the drill bit of the workpiece... After drilling, the guide handle 101 is rotated at high speed. Under centrifugal force, the two lead blocks 302 move outwards, causing the rotating arm 301 to rotate. The lead blocks 302 then compress the countersinking arm 201, causing it to expand outwards. Combined with centrifugal force, the end of the countersinking arm 201 extends beyond the guide handle 101. At this point, the guide handle 101 can be controlled to move upwards for reverse countersinking of the bottom of the workpiece or downwards for forward countersinking of the upper part of the workpiece. When the end of the countersinking arm 201 is stopped by the workpiece surface, the countersinking arm 201... The workpiece is tilted and can be further rotated by the pressure of the workpiece. It is then stopped by the guide handle 101, maintaining its perpendicularity to the guide handle 101. The return rubber strip 203 is stretched, allowing for a smooth countersinking operation. After countersinking, as the guide handle 101 decelerates, the centrifugal force disappears, and the workpiece naturally retracts into the guide handle 101 under the pull of the return rubber strip 203, folding for easy removal from the workpiece. During countersinking, cutting fluid can be supplied in real-time via a cutting fluid pump connected to the water supply pipe 403, draining directly from the drain hole 1011. The area between the guide handle 101 and the countersink arm 201 can be rinsed by spraying water. During manual calibration and inspection, the countersink arm 201 can be manually expanded and pried open. At this time, the insulating post 2011 and the test connection post 104 are no longer concentrically aligned. The test connection post 104 will then be in contact with the connection strip 202. At this time, a multimeter can be manually operated to place the terminals of the multimeter onto the two test connection posts 104. Once a circuit is displayed, it indicates that the countersink arm 201 and the guide handle 101 are no longer perpendicular and need to be replaced in time to avoid continuously affecting the countersinking accuracy.

[0041] The following points should be noted in this article:

[0042] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0043] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0044] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A combination tool for countersinking, comprising a countersinking guide (1), wherein two expansion members (2) are mounted on the countersinking guide (1), characterized in that: The two expansion members (2) are used for counterboring; an expansion force application member (3) is installed inside the counterboring guide member (1); the expansion force application member (3) is attached to the two expansion members (2); The countersink guide (1) is equipped with a real-time flushing component (4); the real-time flushing component (4) is used to prevent debris from blocking the expansion component (2) below. The countersinking guide (1) includes: a guide handle (101), a drain hole (1011), and a test terminal (104). The guide handle (101) has a drain hole (1011). The top of the drain hole (1011) is located outside the guide handle (101). The expansion member (2) includes: a countersinking cutter arm (201), an insulating post (2011), and a grounding strip (202). Two countersinking cutter arms (201) are rotatably mounted on the guide handle (101) via a rotating shaft, and each of the two countersinking cutter arms (201) is provided with a countersinking cutter. The outer side of the end of the countersinking cutter arm (201) has an arc-shaped structure. An insulating post (2011) is fixedly inserted into the middle of the countersinking cutter arm (201). The two countersinking cutter arms (201) are staggered and symmetrically arranged. The two countersinking arms (201) are used for countersinking on the front and back sides respectively; a grounding strip (202) is fixedly installed on the countersinking arm (201); two insulating posts (2011) pass through the two grounding strips (202) respectively; the two insulating posts (2011) correspond to two test grounding posts (104) on the same side respectively, and the diameter of the test grounding post (104) is smaller than that of the insulating post (2011); the bottom end of the drain hole (1011) is located below the countersinking arm (201).

2. The combined tool for countersinking according to claim 1, characterized in that, The countersinking guide (1) further includes: a spring (102) and a chamfering cutter (103). The spring (102) is sleeved inside the guide handle (101). The chamfering cutter (103) is slidably inserted into the side of the guide handle (101), and the chamfering cutter (103) has a V-shaped structure. The chamfering cutter (103) is used to remove burrs. The spring (102) is connected between the chamfering cutter (103) and the guide handle (101).

3. The combined tool for countersinking according to claim 1, characterized in that, Four test terminals (104) are slidably inserted into the guide handle (101), and the four test terminals (104) are arranged symmetrically in pairs; the test terminals (104) are used to contact the multimeter; the outer side of the test terminals (104) is insulated from the guide handle (101).

4. A combination tool for countersinking according to claim 1, characterized in that, The expansion member (2) further includes a reset rubber strip (203), and the reset rubber strip (203) is fixedly installed on the two countersinking cutter arms (201).

5. A combination tool for countersinking according to claim 4, characterized in that, The expansion member (2) further includes: a fixing post (204), two fixing posts (204) are fixedly installed on the guide handle (101), and the ends of two reset rubber strips (203) are fixedly connected to the two fixing posts (204); the reset rubber strips (203) are used to pull the countersinking arm (201).

6. A combination tool for countersinking according to claim 1, characterized in that, The expansion force application component (3) includes: a rotating arm (301), which is rotatably mounted on the guide handle (101) via a rotating shaft; the rotating arm (301) has a symmetrical structure.

7. A combination tool for countersinking according to claim 6, characterized in that, The expansion force application component (3) further includes: lead blocks (302), two lead blocks (302) are fixedly installed on the rotating arm (301), and the two lead blocks (302) are located on both sides of the rotating arm (301); the two lead blocks (302) are respectively attached to the two countersinking cutter arms (201); the two lead blocks (302) protrude from the rotating arm (301); the rotating arm (301) is used for centrifugal offset.

8. A combination tool for countersinking according to claim 1, characterized in that, The real-time flushing component (4) includes: a flushing sleeve (401) and a blade holder connecting sleeve (402). The flushing sleeve (401) is sleeved on the guide blade handle (101). The flushing sleeve (401) is sleeved on the top of the drain hole (1011). The blade holder connecting sleeve (402) is fixedly installed on the top of the flushing sleeve (401). The blade holder connecting sleeve (402) is used to fit onto the blade holder. The blade holder connecting sleeve (402) has a threaded hole. The blade holder connecting sleeve (402) has a screw hole for installing screws to fasten and fit the blade holder.

9. A combination tool for countersinking according to claim 8, characterized in that, The real-time flushing component (4) further includes: a water supply pipe (403), which is fixedly installed on the flushing sleeve (401) and connected to a cutting fluid pump; the water supply pipe (403) is connected to a drainage hole (1011).

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