Telescopic cutter device applied to equipment machining

Abstract

The utility model relates to a telescopic cutter device applied to equipment processing, which is applied to equipment processing and comprises a cutter sleeve, a grinding cutter and a telescopic spring used for dynamically adjusting the extension amount of the grinding cutter in the processing process, and two ends of the telescopic spring are respectively connected with the cutter sleeve and the grinding cutter. According to the utility model, the processing efficiency and the processing yield can be improved.

Description

Technical Field

[0001] This utility model relates to a telescopic cutting tool device used in equipment processing, belonging to the field of automated equipment processing. Background Technology

[0002] With the rapid development of advanced equipment manufacturing industries such as aerospace, automobiles, and shipbuilding, the requirements for the quality and precision of precision machined parts are becoming increasingly stringent. However, tool wear is inevitable during machine tool processing such as grinding and polishing, which has a significant impact on the processing. For example, during grinding, as the tool wears down, the contact distance between the workpiece surface and the tool surface gradually decreases, meaning the effective cutting edge length of the tool decreases. This can lead to problems such as workpiece flatness deviations and uneven thickness, resulting in increased surface roughness. Therefore, tool wear during processing directly affects processing efficiency, quality, and cost. Summary of the Invention

[0003] This utility model provides a telescopic cutting tool device for machine processing, aiming to solve at least one of the technical problems existing in the prior art. Therefore, this utility model proposes a telescopic cutting tool device for machine processing, which can improve processing efficiency and yield.

[0004] The technical solution of this utility model relates to a telescopic cutting tool device, which is applied to equipment processing and includes:

[0005] The tool holder, the grinding tool, and the telescopic spring for dynamically adjusting the extension of the grinding tool during the machining process, wherein the two ends of the telescopic spring are respectively connected to the tool holder and the grinding tool.

[0006] Furthermore, the tool holder is provided with a sleeve and an adjusting rod for adjusting the compression of the grinding tool. The adjusting rod is movably connected to one end of the sleeve and is connected to the telescopic spring.

[0007] Furthermore, the adjusting rod is threadedly connected to one end of the sleeve.

[0008] Furthermore, the adjusting rod is a screw plug push rod.

[0009] Furthermore, it also includes a limiting rod and a limiting slot for limiting the displacement of the telescopic tool, the limiting slot being disposed on the tool sleeve; the limiting rod passing through the limiting slot to connect with the grinding tool.

[0010] Furthermore, the limiting rod is a limiting bolt, and the limiting bolt is threadedly connected to the grinding tool.

[0011] Furthermore, the screw head of the limiting bolt is disposed in the limiting through groove.

[0012] Furthermore, the grinding tool is a flat-bottomed tool or a round-nose tool.

[0013] The beneficial effects of this utility model are as follows.

[0014] The telescopic tool device of this utility model is applied to grinding and polishing processes on machine tools. It connects the tool holder and the grinding tool through a telescopic spring. Taking advantage of the characteristic that the compression amount of the telescopic spring is proportional to the pressure it receives, the telescopic spring dynamically adjusts the extension amount of the grinding tool during the machine tool processing according to the changes in the grinding amount or the unevenness of the surface. This keeps the grinding tool in contact with the workpiece surface for grinding, thereby improving processing efficiency and yield.

[0015] It is equipped with an adjusting rod. By adjusting the position of the adjusting rod inside the sleeve, the insertion depth of the adjusting rod inside the sleeve cavity can be adjusted, and the size of the space inside the sleeve used to accommodate the telescopic spring can be adjusted, thereby adjusting the adjustable range of the compression of the telescopic spring. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a structural cross-sectional view of the telescopic cutting tool device according to an embodiment of the present utility model.

[0018] Figure 2 This is a structural schematic diagram of the telescopic cutting tool device according to an embodiment of the present utility model.

[0019] Figure 3 This is a schematic diagram of the movement direction of the telescopic cutting tool device according to an embodiment of the present utility model.

[0020] Figure 4 This is a perspective view of the internal structure of the telescopic cutting tool device according to an embodiment of the present utility model.

[0021] Figure 5 This is a schematic diagram of the working state of the telescopic cutting tool device according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the machining state of the telescopic cutting tool device according to an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100. Telescopic cutting tool device; 110. Tool sleeve; 111. Sleeve; 112. Adjusting rod; 113. Limiting through groove; 120. Grinding tool; 130. Telescopic spring; 140. Limiting rod;

[0025] 200. Machining the spindle;

[0026] 300. Workpiece; 310. Concave plane. Detailed Implementation

[0027] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0028] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," "right," "top," and "bottom" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0029] Furthermore, 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. The terminology used herein is for the purpose of describing particular embodiments only and not for limiting the scope of the invention. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0030] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various elements, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from one another. For example, without departing from the scope of this disclosure, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element.

[0031] See Figures 1 to 6 The present invention relates to a telescopic cutting tool device for equipment processing, comprising a tool holder 110, a grinding tool 120, and a telescopic spring 130 for dynamically adjusting the extension amount of the grinding tool 120 during processing. The two ends of the telescopic spring 130 are connected to the tool holder 110 and the grinding tool 120, respectively. Specifically, the telescopic spring 130 is disposed within the inner cavity of the tool holder 110, one end of the grinding tool 120 is inserted into the tool holder 110, and the two ends of the telescopic spring 130 are connected to the tool holder 110 and the grinding tool 120, respectively.

[0032] See Figures 5 to 6The end of the grinding tool 120 away from the telescopic spring 130 is used for machining. When the telescopic tool device is installed on the machining spindle 200 of the equipment, and the machining end of the grinding tool 120 contacts the workpiece 300, the other end of the grinding tool 120 compresses the telescopic spring 130. During the machining process, when the grinding tool 120 is worn, causing the grinding amount of the workpiece 300 to gradually decrease, according to Huke's law, that is, the extension and compression of the telescopic spring 130 is proportional to the force it receives, the telescopic spring 130 will generate a reverse force and push the grinding tool 120 to extend, realizing dynamic and automatic compensation of tool wear during the machining process. This helps to maintain the contact distance between the surface of the workpiece 300 and the grinding tool 120, making it less likely for the surface of the workpiece 300 to have problems such as excessive flatness or uneven thickness. This can improve the machining effect and product yield, and reduce the dependence on the intelligent prediction and real-time monitoring function of the CNC system for tool wear.

[0033] Furthermore, when the telescopic tool device is used to polish and grind the uneven surface of the workpiece 300, with the distance between the machining spindle 200 and the workpiece 300 surface remaining constant, when the grinding tool 120 contacts the protruding surface, the compression of the telescopic spring 130 increases, and the reaction force of the telescopic spring 130 also increases, that is, the pushing force of the telescopic spring 130 on the grinding tool 120 increases, thereby increasing the force exerted by the grinding tool 120 on the workpiece 300. Conversely, when the grinding tool 120 contacts the concave surface, the compression of the telescopic spring 130 decreases, and the reaction force of the telescopic spring 130 also decreases, that is, the pushing force of the telescopic spring 130 on the grinding tool 120 decreases, thereby decreasing the force exerted by the grinding tool 120 on the workpiece 300. Thus, during the machining process, the tool extension amount is dynamically adjusted according to the unevenness of the surface, and the pressure of the worn tool 120 on the workpiece surface is automatically and flexibly adjusted according to the degree of unevenness of the workpiece, so that the surface flatness of the workpiece 300 is uniform, which can improve the machining effect.

[0034] The telescopic tool device of this utility model embodiment is applied to grinding and polishing processes on machine tools. It connects the tool sleeve 110 and the grinding tool 120 through a telescopic spring 130. Taking advantage of the characteristic that the extension and compression of the telescopic spring 130 is proportional to the pressure it receives, the extension of the grinding tool 120 is dynamically adjusted during the machine tool processing according to the changes in the amount of grinding or the unevenness of the surface. This keeps the grinding tool 120 in contact with the workpiece 300 processing surface for grinding, thereby improving processing efficiency and yield.

[0035] It should be noted that the telescopic cutting tool device of this utility model embodiment is applicable to grinding or polishing of the concave plane 310. It is understood that in the telescopic cutting tool device of this utility model embodiment, the grinding tool 120 can be a flat-bottomed tool, a round-nose tool, or a grinding rod.

[0036] Specifically, first set the relevant parameters of the machining spindle 200 in the Z-axis displacement, such as: feed rate 350-550 mm / min, cutting amount 0.005-0.01 mm, spindle speed 3500-4500 rpm. Then, after the grinding tool 120 contacts the machining plane, the machining spindle 200 continues to move towards the workpiece 300, so that the grinding tool 120 retracts into the tool sleeve 110, thereby compressing the telescopic spring 130. When the retraction amount of the grinding tool 120 (i.e. the compression amount of the telescopic spring 130) reaches the set value, the machining spindle 200 performs machining on the plane of the workpiece 300 through the grinding tool 120. After the plane machining is completed, the tool is lifted, so that the grinding tool 120 is removed from the machining plane.

[0037] It should be noted that the mathematical expression of Hooke's Law is: F = -kΔx, where F is the spring's reaction force (restoring force), k is the spring constant, and Δx is the displacement of the spring from its equilibrium position. The symbol - indicates that the direction of the force is opposite to the direction of the displacement. According to the above formula, when the spring reaction force F equals the cutting force, the initial compression of the spring (i.e., the initial value of Δx) can be calculated based on the expected cutting force and the spring constant k. During the machining process, as the grinding tool 120 wears, the telescopic spring 130 pushes the grinding tool 120 to extend. At this time, the compression of the telescopic spring 130 also decreases, that is, the value of Δx also decreases. Under the condition that the elastic system k is constant, the spring reaction force F also decreases, which in turn leads to a decrease in the cutting force. Here, the above-mentioned reduction in cutting force is recorded as the first reduction, while the reduction in cutting force caused by tool wear in conventional tool devices without telescopic function is recorded as the second reduction. In this embodiment of the invention, the reaction force of the telescopic spring 130 can offset a portion of the reduction in cutting force. That is, under the same tool wear conditions, the first reduction will be smaller than the second reduction. Therefore, when the cutting amount error threshold requirement is the same, using the telescopic tool device in this embodiment of the invention, because the reaction force of the telescopic spring 130 can offset a portion of the reduction in cutting force, the rate of cutting force reduction is reduced, thereby reducing the frequency of CNC system adjustment of cutting amount. In some machining conditions, such as when the compression of the telescopic spring 130 is sufficiently large relative to the cutting amount error threshold, the entire machining process may not require system adjustment of cutting amount. Furthermore, in the telescopic tool device of this embodiment of the invention, the extension amount of the grinding tool 120 changes with the magnitude of the force at the contact point, enabling sensitive and elastic adjustment, which is beneficial for improving machining efficiency.

[0038] In some embodiments of the telescopic tool device of this utility model, the tool sleeve 110 is provided with a sleeve 111 and an adjusting rod 112 for adjusting the compression of the grinding tool 120. The adjusting rod 112 is movably connected to one end of the sleeve 111, and the adjusting rod 112 is connected to the telescopic spring 130. See also Figure 3 and Figure 4 A telescopic spring 130 is disposed within the inner cavity of a sleeve 111. A grinding tool 120 is inserted into one end of the inner cavity of the sleeve 111, and the other end of the inner cavity of the sleeve 111 is movably connected to an adjusting rod 112. The two ends of the telescopic spring 130 are respectively connected to the grinding tool 120 and the adjusting rod 112. By adjusting the position of the adjusting rod 112 within the sleeve 111, the insertion depth within the inner cavity of the sleeve 111 is adjusted, as is the size of the space within the sleeve 111 used to accommodate the telescopic spring 130, thereby adjusting the adjustable range of the compression of the telescopic spring 130.

[0039] In some specific embodiments, the adjusting rod 112 of this utility model is threadedly connected to the inner wall of the sleeve 111. Further, the adjusting rod 112 is a plug push rod. Specifically, see... Figure 1 The inner cavity of sleeve 111 includes a first channel and a second channel. The first channel is wider than the second channel, and the width of the second channel is slightly larger than the diameter of the grinding tool 120. One end of the grinding tool 120 enters one end of the first channel through the second channel and is connected to the adjusting rod 112. The other end of the first channel is threadedly connected to the adjusting rod 112. When the adjusting rod 112 is rotated, it moves closer to the grinding tool 120. At this time, the space between the adjusting rod 112 and the grinding tool 120 for accommodating the telescopic spring 130 decreases. When the adjusting rod 112 is rotated in the opposite direction, it moves away from the grinding tool 120. At this time, the space between the adjusting rod 112 and the grinding tool 120 for accommodating the telescopic spring 130 increases. Thus, the compression range of the grinding tool 120 and the telescopic spring 130 can be adjusted by adjusting the adjusting rod 112 according to the size and model of the tool and the processing requirements. This allows the compression force of the telescopic tool during the processing to be adjusted, so that the grinding tool 120 device can meet the cutting force required for processing the workpiece 300.

[0040] In some embodiments, the telescopic tool device of this utility model includes a limiting rod 140 and a limiting slot 113 for limiting the displacement of the grinding tool 120. The limiting slot 113 is disposed on the tool sleeve 110; the limiting rod 140 passes through the limiting slot 113 to connect with the grinding tool 120. See also Figure 1 and Figure 2A limiting groove 113 is provided on the side wall of the sleeve 111 of the tool holder 110. One end of the limiting rod 140 is connected to the grinding tool 120, and the other end of the limiting rod 140 is provided in the limiting groove 113. When the grinding tool 120 extends or retracts into the tool holder 110, the grinding tool 120 drives the limiting rod 140 to move up and down within the limiting groove 113. When the extension or retraction of the grinding tool 120 exceeds a threshold, the limiting rod 140 will contact the lower or upper inner wall of the limiting groove 113. Thus, through the cooperation of the limiting rod 140 and the limiting groove 113, the extension and retraction of the grinding tool 120 can be limited within a reasonable range, which helps to avoid excessive extension and retraction of the grinding tool 120 and the telescopic spring 130.

[0041] In some specific embodiments, the limiting rod 140 of this utility model is a limiting bolt, which is threadedly connected to the grinding tool 120, so that when the spindle drives the tool sleeve 110 to rotate, the grinding tool 120 can better follow the rotation, and the tool can be easily disassembled and replaced. Further, when the limiting rod 140 is installed on the grinding tool 120, the threaded head of the limiting bolt is disposed in the limiting through groove 113, and the threaded head of the limiting bolt is spaced apart from the side wall of the limiting through groove 113. When the machining spindle 200 drives the tool sleeve 110 to rotate, the side wall of the limiting through groove 113 will contact the threaded head of the limiting rod 140, allowing the grinding tool 120 to rotate with the tool sleeve 110. Simultaneously, because the threaded head of the limiting rod 140 does not lock the sleeve 111, the threaded head of the limiting rod 140 can slide within the limiting through groove 113, allowing the grinding tool 120 to extend or retract into the tool sleeve 110.

[0042] Specifically, see Figure 2 and Figure 4 The bottom wall of the limiting through groove 113 is provided with an elongated limiting through hole. The width of the limiting through groove 113 is greater than the width of the limiting through hole. Furthermore, the width of the limiting through groove 113 is greater than the diameter of the screw head of the limiting bolt, and the width of the limiting through hole is greater than the diameter of the screw rod of the limiting bolt. The grinding tool 120 is provided with a connecting through hole (see...). Figure 1 When the limiting rod 140 is inserted into the connecting through hole of the grinding tool 120 through the limiting through hole, the screw head of the limiting rod 140 can contact the bottom wall of the limiting through groove 113. By rotating the limiting rod 140 to adjust its insertion depth, the limiting bolt can move up and down within the limiting through groove 113, thus not affecting the free extension and retraction of the grinding tool 120 within a suitable range, while ensuring that the grinding tool 120 can rotate with the tool sleeve 110 and the machining spindle 200. Furthermore, according to the machining requirements, the limiting bolt can be rotated so that the screw head of the limiting bolt contacts the bottom wall of the limiting through groove 113, i.e., the limiting bolt is tightened to fix the extension amount of the grinding tool 120, thereby making the telescopic tool device of this utility model embodiment applicable to a wider range, such as grinding and milling.

[0043] It is understandable that the width of the second channel of the sleeve 111 is slightly larger than the diameter of the grinding tool 120, allowing the grinding tool 120 to move relative to the inner wall of the second channel. Thus, during the machining process, the grinding tool 120 can extend and retract into the tool sleeve 110. At the same time, the grinding tool 120 and the sleeve 111 are connected by the limiting rod 140, allowing the grinding tool 120 to rotate with the machining spindle 200. This helps ensure that when the grinding tool 120 is pressed against the workpiece surface, it can perform up and down telescopic movements without easily causing the grinding tool 120 to tilt. This helps ensure that the grinding tool 120 remains vertical during the machining process. It should be noted that the telescopic tool device of this utility model is mainly used for polishing and grinding uneven surfaces, and its requirements for machining cutting force and cutting accuracy are relatively low.

[0044] The above description is merely a preferred embodiment of this utility model. This utility model is not limited to the above-described embodiments. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this disclosure, as long as they achieve the same technical effect, should be included within the scope of protection of this disclosure and fall under the protection scope of this utility model. Within the protection scope of this utility model, the technical solutions and / or implementation methods can have various modifications and variations.

Claims

1. A telescopic cutting tool device, characterized in that, Applications include equipment processing, including: The tool holder (110), the grinding tool (120), and the telescopic spring (130) for dynamically adjusting the extension of the grinding tool (120) during the machining process, wherein the two ends of the telescopic spring (130) are connected to the tool holder (110) and the grinding tool (120) respectively.

2. The telescopic cutting tool device according to claim 1, characterized in that, The tool holder (110) is provided with a sleeve (111) and an adjusting rod (112) for adjusting the compression of the grinding tool (120). The adjusting rod (112) is movably connected to one end of the sleeve (111) and is connected to the telescopic spring (130).

3. The telescopic cutting tool device according to claim 2, characterized in that, The adjusting rod (112) is threaded to one end of the sleeve (111).

4. The telescopic cutting tool device according to claim 3, characterized in that, The adjusting rod (112) is a screw plug push rod.

5. The telescopic cutting tool device according to claim 1, characterized in that, It also includes a limiting rod (140) and a limiting slot (113) for limiting the displacement of the grinding tool (120), the limiting slot (113) being disposed on the tool sleeve (110); the limiting rod (140) passing through the limiting slot (113) to connect with the grinding tool (120).

6. The telescopic cutting tool device according to claim 5, characterized in that, The limiting rod (140) is a limiting bolt, and the limiting bolt is threadedly connected to the grinding tool (120).

7. The telescopic cutting tool device according to claim 6, characterized in that, The screw head of the limiting bolt is disposed in the limiting through groove (113).

8. The telescopic cutting tool device according to claim 1, characterized in that, The grinding tool (120) is a flat-bottomed tool or a round-nose tool.

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