Height-adjustable complex turning tool

Abstract

This utility model discloses an adjustable-height composite lathe tool, relating to the field of lathe tool technology. It solves the technical problems of existing solutions, such as low adjustment precision, inability to continuously adjust, cumbersome operation, and low efficiency. The tool includes a base, a tool holder, and a cutting blade. The cutting blade is disposed on the upper wall of the tool holder, which is slidably mounted on the base. A fixed cylinder is provided on the base, and a threaded hole is formed inside the fixed cylinder. A screw is rotatably mounted inside the tool holder, and the screw is threadedly connected to the threaded hole of the fixed cylinder. This utility model employs a screw-driven, inclined-plane-wedge-tightened structure. When the screw is rotated, its rotational motion is converted into linear micro-movement of the tool holder along the inclined plane through the threaded pair. The linear displacement of the tool holder is then converted into even smaller vertical displacement of the cutting blade through the inclined plane structure. This mechanical transmission method has a large transmission ratio, allowing the operator to easily achieve continuous, stepless, and high-precision adjustment of the cutting blade height by rotating the screw.

Description

Technical Field

[0001] This utility model relates to the field of lathe tool technology, specifically to a composite lathe tool with adjustable height. Background Technology

[0002] This utility model relates to the technical field of turning tools, which are among the most widely used cutting tools in turning processes and are extensively applied to various types of lathes. During turning, to ensure machining accuracy and surface quality, the tip of the turning tool must be precisely aligned with the workpiece's center of rotation, a process known as "centering height." Tool setting and centering height adjustment are crucial and frequently performed operations prior to turning.

[0003] Traditional tool height adjustment relies primarily on inserting shims of varying thicknesses under the tool holder. The operator gradually adjusts the tool tip to the desired height by repeatedly adding or removing shims, tightening the tool, and performing trial cuts or measurements. This method has several significant drawbacks: Low adjustment accuracy and lack of continuous adjustment: The height adjustment is limited by the minimum thickness of the shims, resulting in a step-like, discontinuous adjustment. When the required adjustment is less than the thickness of the thinnest shim, precise alignment cannot be achieved, affecting the final machining quality. Cumbersome operation and low efficiency: The entire adjustment process requires multiple loosening, adding or removing shims, re-tightening, and measurement, making the operation cumbersome and time-consuming, severely impacting production preparation efficiency, especially in situations requiring frequent tool changes or machining different workpieces. Insufficient stability and rigidity: Using multiple shims results in the tool's support surface being composed of multiple overlapping contact surfaces, which may reduce the overall rigidity and stability of the clamping system. Under heavy cutting or deep-cut machining conditions, this can easily induce vibration, affecting machining accuracy and tool life. Inconvenient gasket management: A set of gaskets of different specifications needs to be provided. These gaskets are easy to lose, get mixed up or wear out, which brings inconvenience to on-site management.

[0004] To overcome the aforementioned shortcomings, some tool holders with adjustment mechanisms have emerged. However, these existing adjustment mechanisms are either difficult to popularize due to their complex structure and high manufacturing cost, or their locking mechanisms are unreliable and prone to displacement under cutting forces, leading to the failure of the adjusted height.

[0005] Therefore, the market urgently needs an adjustable height turning tool that is simple in structure, easy to operate, and capable of continuous and precise adjustment with stable and reliable locking, in order to improve machining efficiency and accuracy while reducing operational difficulty.

[0006] Existing technical solutions suffer from low adjustment precision, inability to make continuous adjustments, cumbersome operation, and low efficiency. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides an adjustable-height composite turning tool, which solves the technical problems of low adjustment accuracy, inability to continuously adjust, cumbersome operation, and low efficiency in existing technical solutions.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an adjustable-height composite turning tool, comprising a base, a tool holder, and a cutting blade. The cutting blade is disposed on the upper wall of the tool holder, and the tool holder is slidably mounted on the base. A fixed cylinder is disposed on the base, and a threaded hole is provided inside the fixed cylinder. A screw is rotatably mounted inside the tool holder, and the screw is threadedly connected to the threaded hole of the fixed cylinder. Through the cooperation between the screw and the threaded hole of the fixed cylinder, the height of the tool holder relative to the base can be easily and precisely adjusted, thereby allowing the center height of the cutting blade to be flexibly adjusted according to processing requirements, meeting the processing requirements under various working conditions, and improving the versatility and applicability of the equipment.

[0009] Preferably, the upper surface of the base is an inclined plane, and the lower surface of the tool holder is another inclined plane that cooperates with the inclined plane; the screw is inclined along the direction of the inclined plane; by adopting the inclined plane structure design, the rotation of the screw can make the tool holder rise and fall smoothly along the inclined plane, which further improves the sensitivity and fine-tuning accuracy of height adjustment, effectively prevents jamming or jumping during the adjustment process, and realizes continuous stepless adjustment.

[0010] Preferably, an auxiliary spring is provided between the tool holder and the base, the auxiliary spring being used to provide preload between the inclined surfaces; the auxiliary spring provides continuous preload between the inclined surfaces to ensure that the tool holder and the base always maintain close contact, thereby preventing the tool holder from shifting position due to vibration or loosening, and improving the reliability and machining accuracy of the whole machine during operation.

[0011] Preferably, one end of the screw is provided with an internal hexagonal groove for driving its rotation; the internal hexagonal groove design facilitates the rotation operation of the screw using an internal hexagonal tool, making the height adjustment process faster and less labor-intensive, and improving the convenience of use and the safety of operation.

[0012] Preferably, a locking mechanism is provided inside the tool holder. The locking mechanism is disposed on the tool holder and is used to prevent relative movement between the tool holder and the base by restricting the axial movement of the screw. The locking mechanism is disposed inside the tool holder to fix the screw axially, effectively preventing relative movement between the tool holder and the base due to force or vibration, ensuring the long-term stability of the blade position and improving machining consistency.

[0013] Preferably, the locking mechanism includes a pin hole formed on the tool holder and a locking pin disposed in the pin hole; the locking pin structure is simple and reliable, and the screw is mechanically limited by inserting the locking pin, thereby achieving efficient physical locking of the screw, preventing adjustment failure during machine tool operation, and further improving the safety and stability of the device.

[0014] Beneficial effects

[0015] This invention provides an adjustable-height composite turning tool, employing a screw-driven structure with a wedge-shaped clamping mechanism. When the screw is rotated, its rotational motion is converted into linear micro-movement of the tool holder along the inclined plane via the threaded joint. This linear displacement of the tool holder is then further converted into even smaller vertical displacement of the cutting edge via the inclined plane structure. This mechanical transmission method has a high transmission ratio, allowing the operator to easily achieve continuous, stepless, and high-precision adjustment of the cutting edge height by rotating the screw. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the adjustable-height composite turning tool of this utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the adjustable-height composite turning tool of this utility model.

[0018] Figure 3 This is a schematic diagram of the front view of the adjustable height composite cutting tool of this utility model.

[0019] Figure 4 This is a schematic diagram of the front cross-sectional structure of the adjustable-height composite turning tool of this utility model.

[0020] In the diagram: 1. Base; 2. Tool holder; 3. Blade; 4. Fixing cylinder; 5. Screw; 6. Auxiliary spring; 7. Locking pin; 8. Pressure block; Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Detailed description follows.

[0022] Please see Figure 1-4This utility model provides a technical solution: an adjustable-height composite lathe tool, including a base 1, a tool holder 2, and a cutting blade 3. The cutting blade 3 is disposed on the upper wall of the tool holder 2. The tool holder 2 is slidably mounted on the base 1. A fixing cylinder 4 is disposed on the base 1. A threaded hole is opened in the fixing cylinder 4. A screw 5 is rotatably mounted in the tool holder 2. The screw 5 is threadedly connected to the threaded hole of the fixing cylinder 4. Through the cooperation between the screw 5 and the threaded hole of the fixing cylinder 4, the height of the tool holder 2 relative to the base 1 can be easily and accurately adjusted, so that the center height of the cutting blade 3 can be flexibly adjusted according to the processing requirements, meeting the processing requirements under various working conditions, and improving the versatility and applicability of the equipment.

[0023] In this embodiment, the upper surface of the base 1 is an inclined plane, and the lower surface of the tool holder 2 is another inclined plane that cooperates with the inclined plane; the screw 5 is inclined along the direction of the inclined plane; by adopting the inclined plane structure design, the rotation of the screw 5 can make the tool holder 2 rise and fall smoothly along the inclined plane, which further improves the sensitivity and fine-tuning accuracy of height adjustment, effectively prevents jamming or jumping during the adjustment process, and realizes continuous stepless adjustment.

[0024] In this embodiment, an auxiliary spring 6 is provided between the tool holder 2 and the base 1. The auxiliary spring 6 is used to provide preload between the inclined surfaces. The auxiliary spring 6 provides continuous preload between the inclined surfaces to ensure that the tool holder 2 and the base 1 always maintain close contact, thereby preventing the tool holder 2 from shifting position due to vibration or loosening, and improving the reliability and processing accuracy of the whole machine during operation.

[0025] In this embodiment, the screw 5 is further configured such that one end of the screw 5 is provided with an internal hexagonal groove for driving its rotation; the internal hexagonal groove design facilitates the rotation operation of the screw 5 using an internal hexagonal tool, making the height adjustment process faster and less labor-intensive, and improving the convenience of use and the safety of operation.

[0026] In this embodiment, a locking mechanism is further provided inside the tool holder 2. The locking mechanism is located on the tool holder 2 and is used to prevent relative movement between the tool holder 2 and the base 1 by restricting the axial movement of the screw 5. The locking mechanism is located inside the tool holder 2 to fix the screw 5 axially, effectively preventing relative movement between the tool holder 2 and the base 1 due to force or vibration, ensuring the long-term stability of the blade 3 position and improving machining consistency.

[0027] In this embodiment, the locking mechanism is further configured to include a pin hole on the tool holder 2 and a locking pin 7 disposed in the pin hole. The locking pin 7 has a simple and reliable structure. By inserting the locking pin 7, the screw 5 is mechanically limited, thereby achieving efficient physical locking of the screw 5, preventing adjustment failure during machine tool operation, and further improving the safety and stability of the device.

[0028] Its detailed connection methods are well-known technologies in this field; such as Figure 1-4 As shown, the base 1 of the compound turning tool is securely mounted on the tool post 2 of the lathe. Prepare an Allen wrench for adjustment. Insert the Allen wrench into the Allen socket at one end of the screw 5. Rotate the wrench to drive the screw 5. The rotation of the screw 5 will cause the tool post 2 to slide smoothly up or down along the inclined surface of the base 1. Due to the inclined wedge structure, a small rotation can be converted into a more precise vertical displacement of the insert 3. Observe the position of the tip of the insert 3 and continue adjusting until it is precisely aligned with the center of rotation of the workpiece. When the insert 3 is adjusted to the ideal height, stop rotating the screw 5. The position of the tool post 2 relative to the base 1 is now firmly locked, ensuring that the tool height will not change due to vibration or cutting force during subsequent cutting operations. After height adjustment and locking, the turning tool can be used for normal turning operations. When the height needs to be adjusted again, repeat the previous steps.

[0029] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A height-adjustable composite turning tool, comprising a base (1), a tool holder (2), and an insert (3), characterized in that, The blade (3) is disposed on the upper wall of the tool holder (2), the tool holder (2) is slidably mounted on the base (1), the base (1) is provided with a fixing cylinder (4), the fixing cylinder (4) is provided with a threaded hole, the tool holder (2) is rotatably mounted with a screw (5), and the screw (5) is threadedly connected to the threaded hole of the fixing cylinder (4).

2. The adjustable-height composite turning tool according to claim 1, characterized in that, The upper surface of the base (1) is an inclined plane, and the lower surface of the tool holder (2) is another inclined plane that cooperates with the inclined plane; the screw (5) is inclined along the direction of the inclined plane.

3. The adjustable-height composite turning tool according to claim 2, characterized in that, An auxiliary spring (6) is provided between the tool holder (2) and the base (1) to provide preload between the inclined surfaces.

4. The adjustable-height composite turning tool according to claim 1, characterized in that, One end of the screw (5) is provided with an internal hexagonal groove for driving its rotation.

5. The adjustable-height composite turning tool according to claim 1, characterized in that, A locking mechanism is provided inside the tool holder (2). The locking mechanism is located on the tool holder (2) and is used to prevent relative movement between the tool holder (2) and the base (1) by restricting the axial movement of the screw (5).

6. The adjustable-height composite turning tool according to claim 5, characterized in that, The locking mechanism includes a pin hole formed on the tool holder (2) and a locking pin (7) disposed in the pin hole.

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