A floating deburring and chamfering tool

Abstract

The present application discloses a floating deburring and chamfering tool, including a tool holder, a floating mechanism and a clamping mechanism. A floating cavity is provided at the front of the tool holder. The floating mechanism includes a floating ring, a floating shaft and a centering device. The floating ring is embedded in the floating cavity. The floating ring and the tool holder are coaxial. The floating shaft has a floating end and a connecting end. The floating end is connected to the clamping mechanism. The connecting end and the floating ring are circumferentially nested with a gap. The connecting end is suitable for rotating with the floating ring. The centering device is provided on the tool holder. The centering device abuts against the connecting end. The centering device is suitable for making the floating shaft coincide with the axis of the tool holder. The tool can generate floating between the tool holder and the tool head by utilizing the movable allowance. The workpiece and the tool are not easily damaged during the deburring and chamfering process, thereby improving the processing stability and reducing the processing error.

Description

Technical Field

[0001] The present application relates to the technical field of cutting tools, and in particular to a floating deburring and chamfering tool. Background Art

[0002] Chamfering is generally done to facilitate part assembly, and chamfers are made on the ends of parts. Deburring is to remove the thorns or flash formed on the edges of parts. In machining, the chamfering and deburring processes are basically carried out at the same time.

[0003] The deburring and chamfering process may seem simple, but it directly affects the quality and processing efficiency of the product. In metal processing, due to the limitations of various irregular-shaped parts, many difficult problems will be faced in polishing, chamfering and deburring due to the complex and changeable positions and shapes, multiple and irregular areas, and complex chamfered edges.

[0004] However, the existing deburring and chamfering process has the following drawbacks: Most domestic factories, even large engine manufacturers, deburr workpieces such as engine casings manually or using handheld pneumatic or electric tools for grinding, grinding, filing, and other methods. This can easily lead to increased product defect rates, very low efficiency, and problems such as rough and uneven surface finishes on processed products. Some manufacturers have also begun using robots equipped with electric or pneumatic tools for automated grinding. Compared with handheld grinding, robotic deburring can effectively improve production efficiency, reduce costs, and increase product yield. However, due to factors such as robotic arm rigidity and positioning errors, using robots to clamp electric or pneumatic tools for deburring of irregular burrs is prone to tool breakage or damage to the workpiece. Summary of the Invention

[0005] One object of the present application is to provide a floating deburring and chamfering tool that is not prone to damaging a workpiece and a tool during operation.

[0006] Another object of the present application is to provide a floating mechanism of a floating deburring and chamfering tool that can cause floating between the tool handle and the tool head.

[0007] To achieve the above objectives, the technical solution adopted in this application is: a floating deburring and chamfering tool, comprising a shank, a floating mechanism and a clamping mechanism, a floating cavity being provided at the front of the shank, the floating mechanism comprising a floating ring, a floating shaft and a centering device, the floating ring being embedded in the floating cavity, the floating ring and the shank being coaxial, the floating shaft having a floating end and a connecting end, the floating end being connected to the clamping mechanism, the connecting end and the floating ring being circumferentially nested with a gap, the connecting end being suitable for rotating with the floating ring, the centering device being provided on the shank, the centering device being against the connecting end, and the centering device being suitable for making the floating shaft coincide with the axis of the shank.

[0008] As an improvement, the connecting end is nested and connected to the inner side of the floating ring. When the floating end deviates from the axis of the tool handle, the connecting end is suitable for inward contact with the floating ring.

[0009] As an improvement, a plurality of connecting teeth are provided on the connecting end, and a plurality of connecting grooves are opened on the floating ring. The connecting teeth and the connecting grooves correspond one to one and are matched with a gap. When the floating end deviates from the axis of the shank, at least one of the connecting teeth contacts and cooperates with the connecting groove.

[0010] As an improvement, the width of the connecting teeth is smaller than the width of the connecting groove, and when the floating shaft deviates from the axis of the tool handle, one side or both sides of a plurality of the connecting teeth are in contact with and cooperate with the connecting groove.

[0011] As an improvement, the centering device is elastically in contact with the connecting end, and the centering device is suitable for keeping the floating center of the connecting end within the floating ring.

[0012] As an improvement, a mounting channel connected to the floating cavity is opened along the central axis at the rear of the shank, and the centering device is arranged in the mounting channel. The centering device includes a centering piece, an elastic reset piece and an adjusting piece. The adjusting piece is movably arranged in the mounting channel, and the elastic reset piece is arranged between the centering piece and the adjusting piece. The elastic reset piece is suitable for making the centering piece reach the connecting end.

[0013] As an improvement, a centering groove is provided on the connecting end, and the centering device is suitable for reaching into the centering groove.

[0014] As an improvement, the centering groove is arc-shaped, the top of the centering piece is arc-shaped, and the curvature of the top of the centering piece is smaller than the curvature of the centering groove.

[0015] As an improvement, a limiter is further provided in the floating cavity, and the limiter is located on the side of the connecting end facing the floating end, the connecting end and the limiter are in surface contact, and the centering device is suitable for making the connecting end contact the limiter; a buffer ring is sleeved on the floating shaft, and the buffer ring is engaged and snapped into the limiter.

[0016] As an improvement, the tool handle is provided with a plurality of positioning grooves for installing positioning columns along the circumference of the floating cavity, and the positioning columns are suitable for passing through the positioning grooves to fasten the floating ring.

[0017] Compared with the prior art, the beneficial effect of the present application is that the tool can realize relative movement between the tool holder and the clamping mechanism through the floating mechanism. When the tool performs deburring and chamfering processes, the tool can adaptively compensate for the contact error between the tool and the workpiece, making the processing process smoother, improving processing stability, and reducing processing errors. The movement process of the floating mechanism is relatively smooth. In the absence of external force, the floating mechanism can make the clamping mechanism and the tool holder coaxial, ensuring that each processing can be precisely controlled by the machine. Under the influence of external forces caused by various errors, the floating mechanism can help the tool head on the clamping mechanism to float adaptively, avoiding the tool from forcibly performing processing with errors, and reducing the probability of damage to the tool and the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of a preferred embodiment according to the present application;

[0019] Figure 2 is an exploded structural view according to a preferred embodiment of the present application;

[0020] Figure 3 is a top view of a preferred embodiment according to the present application;

[0021] Figure 4 According to a preferred embodiment of the present application Figure 3 Sectional view along AA direction;

[0022] Figure 5 According to a preferred embodiment of the present application Figure 3 Cross-sectional view along the BB direction;

[0023] Figure 6 According to a preferred embodiment of the present application Figure 5 Enlarged view at point a;

[0024] Figure 7 It is a schematic diagram of the combined structure of the floating mechanism according to a preferred embodiment of the present application.

[0025] In the figure: 1. Tool handle; 11. Floating cavity; 111. Limiter; 112. Buffer ring; 12. Mounting channel; 13. Positioning groove; 2. Floating mechanism; 21. Floating ring; 211. Connecting groove; 212. Positioning hole; 213. Slide groove; 22. Floating shaft; 221. Floating end; 222. Connecting end; 2221. Connecting tooth; 2222. Centering groove; 23. Centering device; 231. Centering piece; 232. Elastic reset piece; 233. Adjusting piece; 3. Clamping mechanism; 4. Positioning column. DETAILED DESCRIPTION

[0026] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0028] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0029] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0030] The present application will be further described below with reference to the accompanying drawings:

[0031] like Figures 1 to 7As shown, a preferred embodiment of the present application includes a tool holder 1, a floating mechanism 2 and a clamping mechanism 3. A floating cavity 11 is provided at the front of the tool holder 1. The floating mechanism 2 includes a floating ring 21, a floating shaft 22 and a centering device 23. The floating ring 21 is embedded in the floating cavity 11. The floating ring 21 and the tool holder 1 are coaxial. The floating shaft 22 has a floating end 221 and a connecting end 222. The floating end 221 is connected to the clamping mechanism 3. The clamping mechanism 3 is used to install and clamp various types of tool heads. The connecting end 222 and the floating ring 21 are circumferentially nested with a gap. The connecting end 222 is suitable for rotating with the floating ring 21. Through the gap between the connecting end 222 and the floating ring 21, the connecting end 222 and the floating ring 21 can move, so that the floating end 221 can generate a variable angular momentum relative to the floating ring 21. The variable angular momentum can compensate for the error that occurs when the tool head and the workpiece contact, and avoid the tool forcing processing with errors to affect the processing accuracy.

[0032] The centering device 23 is provided on the tool handle 1, and the centering device 23 reaches the connecting end 222. The centering device 23 is suitable for making the floating shaft 22 coincide with the axis of the tool handle 1. Since the tool handle 1 is generally controlled by a control device with a spindle, and the control device can only identify the position of the tool handle 1, and cannot identify the position of the cutter head after floating, the centering device 23 is required to reset the floating shaft 22 after it deviates from the axis of the tool handle 1. When there is no external force, the floating shaft 22 can coincide with the axis of the tool handle 1, so that the axis of the cutter head and the tool handle 1 coincide, ensuring that the position of the cutter head before each processing can be calculated and monitored by the control device, thereby ensuring the processing accuracy each time.

[0033] When the tool handle 1 rotates, the floating ring 21 rotates with the tool handle 1, and the connecting end 222 rotates with the floating ring 21 and drives the floating end 221 to rotate. Finally, the clamping mechanism 3 can rotate with the tool handle 1 to realize the rotating cutting operation of the cutter head. Through the movable cooperation between the connecting end 222 and the floating ring 21, the clamping mechanism 3 can swing within a certain range while rotating, and can work more closely with the surface of the workpiece, realize adaptive deburring and chamfering of the cutter head, and reduce processing errors.

[0034] The connecting end 222 is nested and connected to the inner side of the floating ring 21, which is easy to install and fit, can obtain higher structural strength, and save space and volume. When the floating end 221 deviates from the axis of the shank 1, the connecting end 222 is suitable for internal contact and fit with the floating ring 21. The form of internal contact and fit can enhance the flexibility of the floating end 221. Within the range of movement of the connecting end 222, the floating end 221 can realize universal movement within the corresponding range, making the floating of the cutter head more flexible and accurate, and no jamming occurs.

[0035] The connecting end 222 and the floating ring 21 partially overlap. When the connecting end 222 moves and deviates from the axis of the tool handle 1, the connecting end 222 can maintain connection with the floating ring 21. This design can reduce the volume and weight of the connecting end 222 and the floating ring 21, thereby reducing the weight of the tool handle 1 and improving processing stability.

[0036] The centering device 23 elastically contacts and cooperates with the connecting end 222, and the connecting end 222 can overcome the elastic force of the centering device 23 to move. The centering device 23 is suitable for keeping the floating center of the connecting end 222 within the floating ring 21, avoiding the connection end 222 from being separated from the floating ring 21, and improving the connection stability between the connecting end 222 and the floating ring 21.

[0037] An installation channel 12 connected to the floating cavity 11 is provided along the central axis at the rear of the hilt 1. A centering device 23 is arranged in the installation channel 12. The centering device 23 includes a centering piece 231, an elastic return piece 232 and an adjusting piece 233. The adjusting piece 233 is movably arranged in the installation channel 12. The elastic return piece 232 is arranged between the centering piece 231 and the adjusting piece 233. The elastic return piece 232 and the centering piece 231 and the adjusting piece 233 are preferably sleeved and connected. The elastic return piece 232 is suitable for making the centering piece 231 reach the connecting end 222.

[0038] The elastic return member 232 includes an elastic component such as a spring, and preferably a rectangular spring is used, which can have a greater elastic force within the same volume, and the change of the elastic force is more linear and uniform.

[0039] The adjusting member 233 is threadedly connected to the mounting channel 12. By rotating the adjusting member 233, the position of the adjusting member 233 in the mounting channel 12 can be changed, thereby changing the compression stroke of the elastic reset member 232, thereby adjusting the pressure applied to the centering member 231 and meeting the adjustment of the adaptive floating force under different processing conditions.

[0040] A centering groove 2222 is provided on the connecting end 222, and the centering device 23 is suitable for abutting against the centering groove 2222. The centering groove 2222 can guide the centering device 23 to abut against the connecting end 222, thereby preventing the centering device 23 from slipping during the movement of the connecting end 222 and improving the operation stability of the centering device 23.

[0041] The centering groove 2222 is arc-shaped, and the top of the centering piece 231 is arc-shaped. The curvature of the top of the centering piece 231 is smaller than the curvature of the centering groove 2222. The arc-shaped structure can decompose the pressure exerted by the centering piece 231 on the connecting end 222, so that the pressure change of the connecting end 222 is more regular. The connecting end 222 is easier to move when it deviates from the axis of the tool handle 1 at the beginning. As the deviation of the connecting end 222 increases, the pressure on the connecting end 222 will continue to increase, thereby improving the floating stability of the cutter head and avoiding the cutter head from jumping randomly under the influence of burrs and other parts.

[0042] A limiter 111 is also provided in the floating cavity 11. The limiter 111 is located on the side of the connecting end 222 facing the floating end 221. The connecting end 222 and the limiter 111 are in surface contact. The centering device 23 is suitable for making the connecting end 222 contact the limiter 111. The limiter 111 can improve the activity stability of the connecting end 222. In addition, the connecting end 222 and the floating end 221 are respectively located on both sides of the connecting end 222, and the limiter 111 is close to the connecting end 222, so that the activity range of the connecting end 222 and the activity range of the floating end 221 are proportional to the distance between the limiter 111 and the connecting end 222 and the distance between the limiter 111 and the floating end 221. Extending the distance between the floating end 221 and the limiter 111 can increase the activity range of the floating end 221, making the activity range of the floating end 221 more controllable, and there is no need to increase the volume of the connecting end 222, so that the overall structure of the tool remains compact.

[0043] A buffer ring 112 is sleeved on the floating shaft 22, and the buffer ring 112 is engaged with the limiter 111. The cross section of the buffer ring 112 is preferably circular, and the buffer ring 112 is preferably made of a flexible material, such as rubber, silicone, etc. The buffer ring 112 can form a gap between the limiter 111 and the floating shaft 22 while playing a buffering role, thereby preventing the limiter 111 from interfering with the movement of the floating shaft 22, and can also help the floating shaft 22 to coincide with the axis of the tool handle 1 and reset to a certain extent.

[0044] The tool handle 1 is provided with a plurality of positioning grooves 13 along the circumference of the floating cavity 11 for installing the positioning columns 4. The positioning columns 4 are suitable for passing through the positioning grooves 13 to contact the floating ring 21 and be tightened. The positioning columns 4 are preferably threadedly connected to the positioning grooves 13. Polygonal screw holes are provided on the positioning columns 4 to make the shape of the tool handle 1 more integrated. The positioning columns 4 can be removed with corresponding tools to avoid misoperation. The positioning grooves 13 are preferably three groups, and the positioning grooves 13 are arranged at equal intervals, which can make the floating ring 21 more firmly fixed and avoid relative rotation between the floating ring 21 and the tool handle 1.

[0045] Furthermore, a plurality of positioning holes 212 corresponding to the positioning grooves 13 can be opened around the floating ring 21 , and the positioning posts 4 can be inserted into the positioning holes 212 to improve the connection stability of the floating ring 21 .

[0046] A plurality of slide grooves 213 are provided along the axial direction on the outer surface of the floating ring 21 . The slide grooves 213 and the positioning holes 212 are arranged in coordination. The slide grooves 213 can facilitate pre-positioning of the floating ring 21 and the positioning posts 4 , making installation easier.

[0047] like Figures 5 to 6 As shown, a preferred connection method between the connecting end 222 and the floating ring 21 is tooth connection. The tooth connection structure can not only ensure the connection stability between the connecting end 222 and the floating ring 21, but also prevent the connecting end 222 and the floating ring 21 from being separated, resulting in the inability of the two to rotate together. A plurality of connecting teeth 2221 are provided on the connecting end 222, and a plurality of connecting grooves 211 are provided on the floating ring 21. The connecting teeth 2221 and the connecting grooves 211 correspond to each other one by one and are matched with a gap. The size of the gap cannot be too large. It is necessary to ensure that when the connecting end 222 and one side of the floating ring 21 are completely tangent, the connecting teeth 2221 of the connecting end 222 on the opposite side of the tangent will not be separated from the corresponding connecting groove 211, thereby ensuring the connection stability between the connecting end 222 and the floating ring 21. The connecting teeth 2221 and the connecting grooves 211 can make the connecting end 222 rotate with the floating ring 21, and the gap between the connecting teeth 2221 and the connecting grooves 211 can allow a certain degree of mobility between the connecting end 222 and the floating ring 21.

[0048] When the floating end 221 deviates from the axis of the handle 1 , at least one connecting tooth 2221 contacts and cooperates with the connecting groove 211 . The contact between the connecting tooth 2221 and the connecting groove 211 can drive the connecting end 222 to rotate synchronously.

[0049] The connecting teeth 2221 are non-standard teeth, and the width of the connecting teeth 2221 is smaller than the width of the connecting groove 211 . When the axes of the floating shaft 22 and the tool handle 1 coincide, gaps can be formed between the two sides of the connecting teeth 2221 and the connecting groove 211 .

[0050] When the floating shaft 22 deviates from the axis of the shank 1, one or both sides of the multiple connecting teeth 2221 contact and cooperate with the connecting groove 211. The interference contact between the multiple connecting teeth 2221 and the connecting groove 211 is utilized to improve the structural strength between the connecting end 222 and the floating ring 21, thereby avoiding damage to the connecting teeth 2221, thereby further improving the stability of the synchronous rotation of the connecting end 222.

[0051] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A floating deburring and chamfering tool, characterized by: The utility model comprises a tool handle, a floating mechanism and a clamping mechanism, wherein a floating cavity is provided at the front of the tool handle, the floating mechanism comprises a floating ring, a floating shaft and a centering device, the floating ring is embedded in the floating cavity, the floating ring and the tool handle are coaxial, the floating shaft has a floating end and a connecting end, the floating end is connected to the clamping mechanism, the connecting end and the floating ring are circumferentially nested with a gap, the connecting end is suitable for rotating with the floating ring, the centering device is provided on the tool handle, the centering device abuts against the connecting end, and the centering device is suitable for making the floating shaft coincide with the axis of the tool handle; The rear part of the shank is provided with a mounting channel connected to the floating cavity along the central axis, the centering device is arranged in the mounting channel, the centering device includes a centering piece, an elastic reset piece and an adjusting piece, the adjusting piece is movably arranged in the mounting channel, the elastic reset piece is arranged between the centering piece and the adjusting piece, the elastic reset piece is suitable for making the centering piece abut against the connecting end, a centering groove is provided on the connecting end, the centering device is suitable for abutting against the centering groove, the centering groove is arc-shaped, and the top of the centering piece is arc-shaped; A limiter is further provided in the floating cavity. The limiter is located on the side of the connecting end facing the floating end. The connecting end and the limiter are in surface contact. The centering device is suitable for making the connecting end contact the limiter.

2. The floating deburring and chamfering tool according to claim 1, characterized in that: The connecting end is nested and connected to the inner side of the floating ring. When the floating end deviates from the axis of the tool handle, the connecting end is suitable for inward contact with the floating ring.

3. The floating deburring and chamfering tool according to claim 2, characterized in that: A plurality of connecting teeth are provided on the connecting end, and a plurality of connecting grooves are opened on the floating ring. The connecting teeth and the connecting grooves correspond one to one and are matched with a gap. When the floating end deviates from the axis of the shank, at least one of the connecting teeth contacts and cooperates with the connecting groove.

4. The floating deburring and chamfering tool according to claim 3, characterized in that: The width of the connecting teeth is smaller than the width of the connecting groove. When the floating shaft deviates from the axis of the tool handle, one side or both sides of the plurality of connecting teeth are in contact with and fit into the connecting groove.

5. The floating deburring and chamfering tool according to claim 1, characterized in that: The centering device is elastically in contact with the connecting end, and the centering device is suitable for keeping the floating center of the connecting end in the floating ring.

6. The floating deburring and chamfering tool according to claim 5, characterized in that: The curvature of the top of the centering piece is smaller than the curvature of the centering groove.

7. The floating deburring and chamfering tool according to claim 1, characterized in that: A buffer ring is sleeved on the floating shaft, and the buffer ring is engaged with and clamped in the limiter.

8. The floating deburring and chamfering tool according to claim 1, characterized in that: The tool handle is provided with a plurality of positioning grooves for installing positioning columns along the circumference of the floating cavity. The positioning columns are suitable for passing through the positioning grooves to fasten the floating ring.

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